CN110751739A - Single-chip OBU and awakening method thereof - Google Patents
Single-chip OBU and awakening method thereof Download PDFInfo
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- CN110751739A CN110751739A CN201910945208.3A CN201910945208A CN110751739A CN 110751739 A CN110751739 A CN 110751739A CN 201910945208 A CN201910945208 A CN 201910945208A CN 110751739 A CN110751739 A CN 110751739A
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B15/00—Arrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points
- G07B15/06—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems
- G07B15/063—Arrangements for road pricing or congestion charging of vehicles or vehicle users, e.g. automatic toll systems using wireless information transmission between the vehicle and a fixed station
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/3296—Power saving characterised by the action undertaken by lowering the supply or operating voltage
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The invention discloses a single-chip OBU (on-board unit), which comprises a body, a microprocessor, a communication interface module and a first solar cell panel, wherein the microprocessor is respectively connected with the communication interface module and the first solar cell panel, and the microprocessor and the communication interface module are both arranged in the body; the first solar cell panel is arranged on one side of the body, and the light receiving surface faces the interior of the vehicle; the first solar cell panel provides output voltage to charge the single-chip OBU, the microprocessor or the communication interface module has a wake-up function, and when the output voltage provided by the first solar cell panel is larger than a threshold value, the microprocessor or the communication interface module is triggered to wake up. The single-chip OBU provided by the invention is provided with the first solar cell panel, the first solar cell panel provides output voltage, and the microprocessor or the communication interface module is awakened through rising edge or high level triggering, so that the area of the solar cell panel is increased for charging, the single-chip OBU is used as a mode for awakening the single-chip OBU, physical contact is not needed, and the possibility of damaging the single-chip OBU is reduced.
Description
Technical Field
The invention relates to the technical field of ETC application of an intelligent traffic system, in particular to a single-chip OBU and a wake-up method thereof.
Background
ETC (electronic Toll Collection), also called electronic Toll collection system, in the ETC system, the vehicle-mounted Unit (OBU: On Board Unit) installed On the vehicle windshield adopts special Short Range Communications (DSRC), establishes a microwave communication link with the Road Side Unit (RSU: Road Side Unit) On the ETC lane of the Toll station, under the condition of no parking in the vehicle running process, realizes vehicle identity recognition and electronic fee deduction, realizes no parking, no card fetching, establishes an unmanned vehicle channel, and effectively saves vehicle payment time.
With the popularization of ETC national networking and the rapid development of intelligent transportation, particularly with the continuous promotion of the dismantling work of a high-speed provincial station, the issuing quantity of OBUs is explosively increased, the OBUs are generally divided into single-chip OBUs and double-chip OBUs, the single-chip OBUs pay after being used as a bookkeeping card, and the double-chip OBUs can simultaneously read contact type and non-contact type IC card information; the double-chip OBU has a non-contact card reading circuit, so that the volume is large, the power consumption is high, and the non-contact card reading is easy to fail, so that the fee deduction success rate is influenced; the single-chip OBU can be directly bound with the background account to deduct the fee, does not need to insert a card, has small volume and low power consumption, and is widely popularized.
The single-chip OBU is usually communicated with the outside through the Bluetooth module, the Bluetooth module is used as a secondary issuing and activating interface, or a communication interface for reading out transaction records, and the utilization rate is low; the working modes of the Bluetooth module are divided into a timing working mode and an untimed working mode, if the Bluetooth module is in the timing working mode, the power consumption is high, and a battery of the single-chip OBU is still consumed, so that the electric quantity and the service life of the battery are influenced; if the bluetooth module carries out untimely mode, need manual trigger external button during dormant state, just can awaken up bluetooth module, but human static can increase monolithic OBU by the possibility of static damage, uses external force to trigger the button simultaneously, and the operation frequently easily leads to monolithic OBU to drop.
Disclosure of Invention
The invention aims to provide a single-chip OBU and a wake-up method thereof to solve the problems that in the prior art, the Bluetooth module of the OBU has high power consumption and influences electric quantity in different working modes, and the OBU is easy to damage.
According to a first aspect of the present invention, a monolithic OBU is provided, which includes a body disposed in a vehicle, a microprocessor, a communication interface module, and a first solar cell panel, wherein the microprocessor is connected to the communication interface module and the first solar cell panel, and both the microprocessor and the communication interface module are disposed in the body; the first solar cell panel is arranged on one side of the body, and the light receiving surface faces the interior of the vehicle; the first solar cell panel provides output voltage to be the monolithic OBU charges, the microprocessor or the communication interface module has the function of awakening up, and when the output voltage provided by the first solar cell panel is greater than a threshold value, the microprocessor or the communication interface module is triggered to awaken up.
Further, the first solar cell panel generates a first output voltage under the irradiation of a first light source and generates a second output voltage under the irradiation of a second light source, and the intensity of the first light source is lower than that of the second light source; the threshold is the minimum wake-up voltage of the microprocessor or the communication interface module, the threshold is between the first output voltage and the second output voltage, and the second output voltage triggers to wake up the microprocessor or the communication interface module.
Further, the first output voltage is a maximum voltage generated by the first solar cell panel under the irradiation of the first light source.
Further, the second output voltage is a minimum voltage generated by the first solar cell panel under the irradiation of the second light source.
Further, if the first output voltage and the second output voltage are both higher than the maximum wake-up voltage of the microprocessor or the communication interface module, the first solar cell panel is provided with a voltage division circuit, the voltage division circuit divides the first output voltage and the second output voltage, so that the minimum wake-up voltage of the microprocessor or the communication interface module is between the divided first output voltage and the divided second output voltage, and the divided second output voltage triggers to wake-up the microprocessor or the communication interface module.
Further, the first light source is one or more of natural light, fixed light source and fixed light in the vehicle; the second light source is one or more of a mobile light source, a flashlight and a flashlight.
Further, the first solar cell panel is a low-light type solar cell panel.
Furthermore, the communication interface module is a bluetooth module.
Further, the monolithic OBU further includes a second solar cell panel disposed on the other side of the body, and the light-receiving surface faces the outside of the vehicle.
Further, the second solar cell panel is a strong light type solar cell panel.
According to a second aspect of the present invention, there is provided a wake-up method for a monolithic OBU, using any one of the monolithic OBUs described above, the wake-up method for the monolithic OBU comprising the steps of:
step S1, providing output voltage by a first solar cell panel of the single-chip OBU to charge the single-chip OBU;
and step S2, the microprocessor of the single-chip OBU or the communication interface module of the single-chip OBU has a wake-up function, and when the output voltage provided by the first solar panel is greater than a threshold value, the microprocessor or the communication interface module is triggered to wake up.
Further, the step S2 includes:
step S21, measuring a first output voltage generated by the first solar panel under the irradiation of a first light source;
step S22, measuring a second output voltage generated by the first solar panel under the irradiation of a second light source; the intensity of the first light source is lower than the intensity of the second light source;
step S23, the threshold is a minimum wake-up voltage of the microprocessor or the communication interface module, the threshold is between the first output voltage and the second output voltage, and the second output voltage triggers to wake up the microprocessor or the communication interface module.
Further, the first output voltage is a maximum voltage generated by the first solar cell panel under the irradiation of the first light source.
Further, the second output voltage is a minimum voltage generated by the first solar cell panel under the irradiation of the second light source.
Further, if the first output voltage and the second output voltage are both higher than the maximum wake-up voltage of the microprocessor or the communication interface module, the first solar cell panel is provided with a voltage division circuit, the voltage division circuit divides the first output voltage and the second output voltage, so that the minimum wake-up voltage of the microprocessor or the communication interface module is between the divided first output voltage and the divided second output voltage, and the divided second output voltage triggers to wake-up the microprocessor or the communication interface module.
Compared with the prior art, the card testing method and system based on the engineering management test script provided by the invention have the following advantages:
the single-chip OBU provided by the invention is provided with the first solar cell panel, the light receiving surface of the first solar cell panel faces the inside of the vehicle, namely the light receiving surface faces the direction of a user, the first solar cell panel provides output voltage to charge the single-chip OBU, the area of the solar cell panel is increased, energy can be conveniently further supplemented, the service life of the single-chip OBU is prolonged, and meanwhile, when the output voltage provided by the first solar cell panel is greater than a threshold value, a microprocessor or a communication interface module with a wake-up function is triggered and awakened through a rising edge or a high level to serve as a mode for awakening the single-chip OBU, the microprocessor or the communication interface module is awakened when needed, the energy consumption is reduced, and meanwhile, the wake-up mode does not need physical contact.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. In the drawings:
FIG. 1 is a block diagram of a monolithic OBU in accordance with a preferred embodiment of the present invention;
FIG. 2 is a flowchart illustrating steps of a wake-up method for a monolithic OBU according to a preferred embodiment of the present invention;
fig. 3 is a flowchart illustrating an exploded step of step S2 in the wake-up method of the monolithic OBU shown in fig. 2.
Reference numerals:
1-a body, 2-a microprocessor,
3-a communication interface module, 4-a first solar cell panel,
5-a second solar panel.
Detailed Description
In the following detailed description of the preferred embodiments of the invention, reference is made to the accompanying drawings that form a part hereof, and in which is shown by way of illustration, specific features of the invention, such that the advantages and features of the invention may be more readily understood and appreciated. The following description is an embodiment of the claimed invention, and other embodiments related to the claims not specifically described also fall within the scope of the claims. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
The invention is further described with reference to the following figures and detailed description of embodiments.
Fig. 1 is a block diagram illustrating a monolithic OBU according to a preferred embodiment of the present invention, in which fig. 1 is a block diagram.
The embodiment provides a monolithic OBU, which includes a body 1, a microprocessor 2, a communication interface module 3, and a first solar cell panel 4, which are disposed in a vehicle, wherein the microprocessor 2 is connected to the communication interface module 3 and the first solar cell panel 4, and the microprocessor 2 and the communication interface module 3 are both disposed in the body 1; the first solar cell panel 4 is arranged on one side of the body 1, and the light receiving surface faces the interior of the vehicle; first solar cell panel 4 provides output voltage does the monolithic OBU charges, microprocessor 2 or communication interface module 3 has the function of awakening up, when output voltage that first solar cell panel 4 provided is greater than the threshold value, trigger awakens up microprocessor 2 or communication interface module 3.
The single-chip OBU provided by the invention is provided with the first solar cell panel, the light receiving surface of the first solar cell panel faces the inside of the vehicle, namely the light receiving surface faces the direction of a user, the first solar cell panel provides output voltage to charge the single-chip OBU, the area of the solar cell panel is increased, energy can be conveniently further supplemented, the service life of the single-chip OBU is prolonged, and meanwhile, when the output voltage provided by the first solar cell panel is greater than a threshold value, a microprocessor or a communication interface module with a wake-up function is triggered and awakened through a rising edge or a high level to serve as a mode for awakening the single-chip OBU, the microprocessor or the communication interface module is awakened when needed, the energy consumption is reduced, and meanwhile, the wake-up mode does not need physical contact.
The body 1 is a shell of the single-piece OBU, and a containing space is arranged in the body and can contain other modules or structures such as the microprocessor 2, and the single-piece OBU is fixed in the vehicle through the body 1 and is generally positioned on a windshield of the vehicle, and of course, the body 1 can also be positioned at other positions in the vehicle so as to establish a microwave communication link between the single-piece OBU and a Road Side Unit (RSU: Road Side Unit) on an ETC lane of a toll station.
The microprocessor 2 is the core of the monolithic OBU and is used for connecting with other modules or structures and processing various functions of the monolithic OBU. The microprocessor is a central processing unit consisting of one or a few large-scale integrated circuits, which execute the functions of the control unit and the arithmetic logic unit, and can complete the operations of fetching instructions, executing instructions, exchanging information with the external memory and the logic unit, and the like.
The microprocessor 2 or the communication interface module 3 has a wake-up function, and one of the wake-up functions can be selected according to needs during wake-up.
When the microprocessor 2 has a wake-up function, in this embodiment, the wake-up function is implemented by a wake-up pin on the microprocessor 2, and may be implemented in other manners. When the microprocessor 2 needs to be awakened, when the output voltage provided by the first solar panel 4 is detected to be greater than a threshold value, the microprocessor 2 is triggered to be awakened. The threshold is the minimum wake-up voltage of the microprocessor 2.
The communication interface module 3 is used as an interface for communicating with the outside, such as a secondary issuing and activating interface, or a communication interface for reading transaction records.
When the communication interface module 3 has the wake-up function, in this embodiment, the wake-up function is implemented by the wake-up pin on the communication interface module 3, and may be implemented in other manners. When the communication interface module 3 needs to be awakened, when the output voltage provided by the first solar cell panel 4 is detected to be greater than the threshold value, the communication interface module 3 is triggered to be awakened. The threshold is the minimum wake-up voltage of the communication interface module 3.
Further, the communication interface module 3 is a bluetooth module. The Bluetooth module is used for short-distance wireless communication, and preferably is a low-power Bluetooth (BLE) module, so that energy consumption can be remarkably reduced. Of course, the communication interface module 3 may also be other modules, and is not limited to the bluetooth module.
The first solar cell panel 4 is disposed on one side of the body 1, and the light receiving surface faces the inside of the vehicle, that is, the side facing the user, so as to facilitate the user operation, for example, providing a light source. First solar cell panel 4 provides output voltage does the monolithic OBU charges, specifically, be equipped with battery or electric capacity in the monolithic OBU, first solar cell panel 4 is as the charging source of battery or electric capacity has furthest increased solar cell panel's area, the life-span of extension battery or electric capacity, also can arouse through providing output voltage to awaken up microprocessor 2 or communication interface module 3 opens corresponding function simultaneously.
Further, the first solar cell panel 4 generates a first output voltage under the irradiation of a first light source, and generates a second output voltage under the irradiation of a second light source, wherein the intensity of the first light source is lower than that of the second light source; the threshold is a minimum wake-up voltage of the microprocessor 2 or the communication interface module 3, the threshold is between the first output voltage and the second output voltage, and the second output voltage triggers wake-up of the microprocessor 2 or the communication interface module 3.
Under the irradiation of light sources with different intensities, the first solar cell panel 4 can generate different output voltages, so that the minimum wake-up voltage of the microprocessor 2 or the communication interface module 3 is between the first output voltage and the second output voltage;
the intensity of the first light source is lower than the intensity of the second light source, so the first output voltage is less than the second output voltage; when the first solar cell panel 4 generates the first output voltage, the microprocessor 2 or the communication interface module 3 is not awakened because the first output voltage is less than the minimum awakening voltage of the microprocessor 2 or the communication interface module 3; when the first solar cell panel 4 generates the second output voltage, the microprocessor 2 or the communication interface module 3 may be awakened because the second output voltage is greater than the minimum awakening voltage of the microprocessor 2 or the communication interface module 3.
Only need the light source of different intensity, first solar cell panel 4 just can produce different output voltage, provides stronger light under the circumstances that needs, first solar cell panel 4 produces an instantaneous high voltage or lasting high level, awakens up the pin through the rising edge of level or high level input, just can awaken up microprocessor 2 or communication interface module 3 need not physical contact, convenient operation, low power dissipation, also can not cause the damage to monolithic OBU.
Further, the first output voltage is the maximum voltage generated by the first solar cell panel 4 under the irradiation of the first light source, and the range is wider and the applicability is stronger.
Further, the first light source is one or more of natural light, fixed light source and fixed light in the vehicle. The first light source is a fixed, weaker light source that can be provided within the vehicle.
Further, the second output voltage is the minimum voltage generated by the first solar cell panel 4 under the irradiation of the second light source, and the range is wider and the applicability is stronger.
Further, the second light source is one or more of a mobile light source, a flashlight and a flashlight. The second light source is a man-made stronger light source which can provide higher intensity in a short distance, and is convenient for manual operation. If the flash light of the mobile phone is used, the Bluetooth in the mobile phone can also communicate with the Bluetooth module of the single-chip OBU.
Further, if the first output voltage and the second output voltage are both higher than the maximum wake-up voltage of the microprocessor 2 or the communication interface module 3, the first solar cell panel 4 is provided with a voltage dividing circuit, the voltage dividing circuit divides the first output voltage and the second output voltage, so that the minimum wake-up voltage of the microprocessor 2 or the communication interface module 3 is between the divided first output voltage and the divided second output voltage, and the divided second output voltage triggers to wake-up the microprocessor 2 or the communication interface module 3. The safety is improved, and the microprocessor 2 or the communication interface module 3 is prevented from being damaged by overhigh voltage.
Preferably, the voltage dividing circuit is a resistor voltage dividing circuit, and the resistance value of the voltage dividing resistor is calculated to obtain a voltage dividing ratio, so that the first output voltage and the second output voltage of the first solar cell panel 4 are divided.
The first solar cell panel 4 can adjust the output voltage through the voltage division circuit, avoids the adverse effect caused by higher output voltage to the microprocessor 2 or the communication interface module 3, can also be adjusted according to the use requirement, and is more flexible and convenient.
Further, the first solar cell panel 4 is a low-light type solar cell panel. The solar panel is a device which directly or indirectly converts solar radiation energy into electric energy through a photoelectric effect or a photochemical effect by absorbing sunlight; the weak-light solar cell panel is opposite to the strong-light solar cell panel, and can still convert light energy into electric energy under weak light intensity; the conversion efficiency of the strong light type solar panel under strong light is higher. The number of the first solar cell panels 4 can be one or multiple, and the solar cell panels are designed according to use requirements, so that the area of the solar cell panels is increased to the maximum extent, and the electric quantity is increased.
Further, the monolithic OBU further includes a second solar cell panel 5, where the second solar cell panel 5 is disposed on the other side of the body 1, and a light receiving surface faces the outside of the vehicle. Towards the outside of the vehicle, i.e. closer to the windshield of the vehicle, the light is good and can further charge the battery or capacitor within the monolithic OBU. The number of the second solar panels 5 can be one or more, and the second solar panels are designed according to use requirements.
Further, the second solar cell panel 5 is a solar cell panel with strong light.
Fig. 2 is a flowchart illustrating steps of a wakeup method of a monolithic OBU according to a preferred embodiment of the present invention, as shown in fig. 2.
The awakening method of the single-chip OBU comprises the following steps:
step S1, providing output voltage for the first solar cell panel 4 of the single-chip OBU to charge the single-chip OBU;
step S2, the microprocessor 2 of the monolithic OBU or the communication interface module 3 of the monolithic OBU has a wake-up function, and when the output voltage provided by the first solar cell panel 4 is greater than a threshold value, the microprocessor 2 or the communication interface module 3 is triggered to wake up.
Monolithic formula OBU utilizes first solar cell panel's output voltage triggers awakening microprocessor or communication interface module, both increased solar cell panel's area charges, further supplementary energy postpones monolithic formula OBU's life, as awakening again monolithic formula OBU's a mode just awakens up when needing, reduces the energy consumption, awakens up the mode simultaneously and need not physical contact, reduces the possibility of damaging monolithic formula OBU.
As shown in fig. 3, fig. 3 is a flowchart illustrating an exploded step of step S2 in the wake-up method of the monolithic OBU shown in fig. 2.
Further, the step S2 includes:
step S21, measuring a first output voltage generated by the first solar cell panel 4 under the irradiation of the first light source;
step S22, measuring a second output voltage generated by the first solar cell panel 4 under the irradiation of the second light source; the intensity of the first light source is lower than the intensity of the second light source;
step S23, the threshold is a minimum wake-up voltage of the microprocessor 2 or the communication interface module 3, the threshold is between the first output voltage and the second output voltage, and the second output voltage triggers to wake up the microprocessor 2 or the communication interface module 3.
Further, the first output voltage is a maximum voltage generated by the first solar cell panel 4 under the irradiation of the first light source.
Further, the second output voltage is a minimum voltage generated by the first solar cell panel 4 under the irradiation of the second light source.
Further, if the first output voltage and the second output voltage are both higher than the maximum wake-up voltage of the microprocessor 2 or the communication interface module 3, the first solar cell panel 4 is provided with a voltage dividing circuit, the voltage dividing circuit divides the first output voltage and the second output voltage, so that the minimum wake-up voltage of the microprocessor 2 or the communication interface module 3 is between the divided first output voltage and the divided second output voltage, and the divided second output voltage triggers to wake-up the microprocessor 2 or the communication interface module 3.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Claims (15)
1. The single-chip OBU is characterized by comprising a body (1) arranged in a vehicle, a microprocessor (2), a communication interface module (3) and a first solar cell panel (4), wherein the microprocessor (2) is respectively connected with the communication interface module (3) and the first solar cell panel (4), and the microprocessor (2) and the communication interface module (3) are both arranged in the body (1); the first solar cell panel (4) is arranged on one side of the body (1), and the light receiving surface faces the interior of the vehicle; first solar cell panel (4) provide output voltage does the monolithic OBU charges, microprocessor (2) or communication interface module (3) have the function of awakening up, when output voltage that first solar cell panel (4) provided is greater than the threshold value, trigger and awaken up microprocessor (2) or communication interface module (3).
2. The monolithic OBU according to claim 1, wherein the first solar panel (4) generates a first output voltage under illumination by a first light source and a second output voltage under illumination by a second light source, the intensity of the first light source being lower than the intensity of the second light source; the threshold is a minimum wake-up voltage of the microprocessor (2) or the communication interface module (3), the threshold is between the first output voltage and the second output voltage, and the second output voltage triggers wake-up of the microprocessor (2) or the communication interface module (3).
3. The monolithic OBU according to claim 2, wherein the first output voltage is a maximum voltage generated by the first solar panel (4) under illumination by the first light source.
4. The monolithic OBU according to claim 2, wherein the second output voltage is a minimum voltage generated by the first solar panel (4) under illumination by the second light source.
5. The monolithic OBU according to claim 2, wherein if the first output voltage and the second output voltage are both higher than a maximum wake-up voltage of the microprocessor (2) or the communication interface module (3), the first solar panel (4) is provided with a voltage divider circuit that divides the first output voltage and the second output voltage such that a minimum wake-up voltage of the microprocessor (2) or the communication interface module (3) is between the divided first output voltage and the divided second output voltage, and the divided second output voltage triggers wake-up of the microprocessor (2) or the communication interface module (3).
6. The one-piece OBU according to claim 2, wherein the first light source is one or more of a natural light, a fixed light source, a fixed light within the vehicle; the second light source is one or more of a mobile light source, a flashlight and a flashlight.
7. The monolithic OBU according to claim 1, wherein the first solar panel (4) is a low-light solar panel.
8. The monolithic OBU according to claim 1, wherein the communication interface module (3) is a bluetooth module.
9. The monolithic OBU according to claim 1, further comprising a second solar panel (5), the second solar panel (5) being provided on the other side of the body (1) with the light receiving surface facing the outside of the vehicle.
10. The monolithic OBU according to claim 9, wherein the second solar panel (5) is a solar panel of the glare type.
11. A method for waking up a monolithic OBU, using the monolithic OBU according to any one of claims 1 to 10, the method comprising the steps of:
step S1, providing output voltage for a first solar cell panel (4) of the single-chip OBU to charge the single-chip OBU;
and step S2, the microprocessor (2) of the single-chip OBU or the communication interface module (3) of the single-chip OBU has a wake-up function, and when the output voltage provided by the first solar panel (4) is greater than a threshold value, the microprocessor (2) or the communication interface module (3) is triggered to wake up.
12. The wake-up method of the monolithic OBU as claimed in claim 11, wherein the step S2 comprises:
step S21, measuring a first output voltage generated by the first solar panel (4) under the irradiation of a first light source;
step S22, measuring a second output voltage generated by the first solar panel (4) under the irradiation of a second light source; the intensity of the first light source is lower than the intensity of the second light source;
step S23, the threshold is a minimum wake-up voltage of the microprocessor (2) or the communication interface module (3), the threshold is between the first output voltage and the second output voltage, and the second output voltage triggers wake-up of the microprocessor (2) or the communication interface module (3).
13. The method of waking up a monolithic OBU as claimed in claim 12, wherein the first output voltage is a maximum voltage generated by the first solar panel (4) under illumination by the first light source.
14. The method of waking up a monolithic OBU as claimed in claim 12, wherein the second output voltage is a minimum voltage generated by the first solar panel (4) under illumination by the second light source.
15. The wake-up method of a monolithic OBU according to claim 12, wherein if the first output voltage and the second output voltage are both higher than the maximum wake-up voltage of the microprocessor (2) or the communication interface module (3), the first solar panel (4) is provided with a voltage dividing circuit, the voltage dividing circuit divides the first output voltage and the second output voltage such that the minimum wake-up voltage of the microprocessor (2) or the communication interface module (3) is between the divided first output voltage and the divided second output voltage, and the divided second output voltage triggers wake-up of the microprocessor (2) or the communication interface module (3).
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