Monitoring device for license plate of electric bicycle

Abstract

The utility model relates to the field of license plates, in particular to an electric bicycle license plate monitoring device which comprises a license plate, a main control module and a metal coil. An RFID module is arranged in the license plate; the metal coil is circumferentially wound on the outer edge of the license plate; a shielding detection assembly is arranged on the periphery of the license plate number of the license plate. One end of the metal coil is connected with the main control module, the other end of the metal coil is connected with one end of the first grounding resistor, and the other end of the first grounding resistor is grounded; the shielding detection assembly and the RFID module are respectively connected with the main control module, and are used for solving the technical problems in the prior art that the multi-dimensional monitoring data of the license plate of the electric bicycle is difficult to provide, and the burden of the management work of the license plate of the electric bicycle of a traffic control department is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to license plate field especially, it is a kind of monitoring device of electric bicycle license plate. BACKGROUND

[0002] At present, with the massive popularity of electric bicycle, no license plate, license plate is often blocked, license plate is damaged electric bicycle on road, for the electric bicycle license plate management work of traffic control department increased burden.And in prior art, by setting RFID chip in license plate, the monitoring of license plate number is realized, but it is still difficult to realize the monitoring of license plate damage, license plate shielding.Therefore, how to provide multi-dimensional monitoring data of electric bicycle license plate, reduce the burden of electric bicycle license plate management work of traffic control department, become the technical problem to be solved urgently. SUMMARY

[0003] The utility model embodiment discloses a kind of monitoring device of electric bicycle license plate, to solve the technical problem that the multi-dimensional monitoring data of electric bicycle license plate of prior art is difficult to provide, reduce the burden of electric bicycle license plate management work of traffic control department.

[0004] The utility model embodiment provides a kind of monitoring device of electric bicycle license plate, comprising: license plate, main control module, metal coil;

[0005] The inside of the license plate is provided with RFID module;

[0006] The metal coil is circumferentially arranged on the outer edge of the license plate;

[0007] The periphery of the license plate number of the license plate is provided with shielding detection component;

[0008] One end of the metal coil is connected with the main control module, another end of the metal coil is connected with one end of first grounding resistance, another end of the first grounding resistance is grounded;

[0009] The shielding detection component, the RFID module are connected with the main control module respectively.

[0010] Optionally, the shielding detection component includes photosensitive resistance;

[0011] One end of the photosensitive resistance is connected with the main control module, another end of the photosensitive resistance is connected with ground by second grounding resistance.

[0012] Optionally, the shielding detection component further includes: infrared pair tube array;

[0013] The infrared pair tube array is respectively connected with the main control module, ground.

[0014] Optionally, the license plate is provided with an indicator light.

[0015] One end of the indicator light is connected with the master control module through a first resistor.

[0016] The other end of the indicator light is grounded.

[0017] Optionally, the outer side of the license plate is provided with a layer of solar panel.

[0018] The solar panel is connected with the master control module.

[0019] Optionally, one side of the license plate is provided with a power supply capacitor.

[0020] The power supply capacitor is connected with the master control module.

[0021] Optionally, the master control module is connected with the RFID module through a single bus.

[0022] Optionally, the number of the indicator light comprises at least one.

[0023] The indicator light is arranged at the four corners of the license plate.

[0024] Optionally, the license plate is provided with a signal connection point, which is used for connecting an external device with the master control module.

[0025] Optionally, the indicator light is an LED (Light Emitting Diode).

[0026] The cathode of the LED is grounded, and the anode of the LED is connected with the first resistor.

[0027] From the above technical solution, it can be seen that the utility model embodiment has the following advantages:

[0028] The utility model provides a kind of monitoring device of electric bicycle license plate, comprising: license plate, master control module, metal coil;The metal coil is circumferentially arranged on the outer edge of the license plate;The periphery of the license plate number is provided with a shielding detection component;One end of the metal coil is connected with the master control module, the other end of the metal coil is connected with the one end of first grounding resistor, the other end of the first grounding resistor is grounded;The shielding detection component, the RFID module are connected with the master control module respectively.

[0029] The utility model discloses a license plate's inside is provided with RFID module, is used for with the traffic control equipment communication connection, and is used for storing data. The metal coil circumferential around the outer edge of license plate is equipped with, and one end of metal coil is connected with main control module, the other end of metal coil is connected with one end of first grounding resistance, the other end of first grounding resistance is grounded, when license plate appears breakage, the incomplete condition, the metal coil that circumferential around the outer edge of license plate breaks down, thereby makes the loop of metal coil and main control module connection breaks, makes the signal of interface end in main control module and metal coil connection changes, based on this, main control module can be used to gather interface end's first signal, and based on the connection relation of RFID module, the first signal of gathering is stored in RFID module, realizes license plate breakage condition's monitoring. And, the utility model discloses a license plate's license plate number's periphery is provided with the shelter detection subassembly, and main control module is connected with shelter detection subassembly, is used for gathering when license plate is sheltered the second signal generated, and is used for storing the second signal gathered in RFID module, realizes the monitoring of license plate shelter condition.

[0030] Therefore, the monitoring device of the electric bicycle license plate provided by the embodiment further provides the first signal for feeding back the license plate integrity and the second signal for feeding back the license plate shelter condition on the basis of the existing RFID module providing the license plate number data, realizes the collection of multi-dimensional license plate monitoring data, provides rich license plate monitoring data for the electric bicycle license plate management work of the traffic control department, and avoids the condition that only the monitoring of the license plate number is realized, and it is difficult to realize the monitoring of the license plate breakage and the license plate shelter in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without the creative labor of the ordinary skilled in the art.

[0032] Figure 1 It is a structural schematic diagram of the monitoring device of the electric bicycle license plate provided in the embodiment of the utility model.

[0033] Figure 2 It is a partial circuit diagram of the monitoring device of the electric bicycle license plate provided in the embodiment of the utility model.

[0034] Figure 3 It is another structural schematic diagram of the monitoring device of the electric bicycle license plate provided in the embodiment of the utility model. DETAILED DESCRIPTION

[0035] The utility model provides a kind of monitoring device of electric bicycle license plate, to solve the technical problem that present technique is difficult to provide multidimensional monitoring data of electric bicycle license plate, reduce the burden of electric bicycle license plate management work of traffic control department.

[0036] The technical solutions of the utility model will be described clearly and completely in conjunction with the drawings, obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of protection of the utility model.

[0037] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by terms "front", "back", "upper", "lower", "two ends", "center", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or implied that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model. Relationship terms such as "first", "second" and the like are only used to distinguish one entity from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities.

[0038] Unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing", "setting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; It can be mechanically connected, it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication inside two elements. For the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0039] Please refer to Figure 1 An embodiment of the monitoring device of electric bicycle license plate provided in the utility model embodiment includes: license plate, main control module 1, metal coil 2;

[0040] The inside of the license plate is provided with RFID module 3;

[0041] The metal coil 2 is circumferentially arranged on the outer edge of the license plate;

[0042] The periphery of the license plate number of the license plate is provided with a shielding detection assembly 4;

[0043] One end of the metal coil 2 is connected with the main control module 1, the other end of the metal coil 2 is connected with one end of the first grounding resistance R1, and the other end of the first grounding resistance R1 is grounded.

[0044] The shielding detection assembly 4 and the RFID module 3 are connected with the main control module 1 respectively.

[0045] It should be noted that in the embodiment, the license plate is internally provided with the RFID module 3, which is used for communication connection with the traffic management device and is used for storing data. It can be understood that the traffic management device is a device provided at a road traffic checkpoint and can be used for wireless communication with the RFID module 3 and can read the data stored in the RFID module 3. The traffic management device is a corresponding device set by the traffic management department according to its own work requirements, and the improvement of the traffic management device is not involved in the utility model. In one example, the RFID module 3 can be used to write the license plate number and / or vehicle ID. The vehicle ID is used to distinguish electric bicycles, and each electric bicycle has a unique vehicle ID.

[0046] The metal coil 2 is circumferentially provided on the outer edge of the license plate, so that the metal coil 2 is provided on the outer edge of the license plate, and two ends of the metal coil 2 are led out after being provided, and are connected with the main control module 1 and the first grounding resistor R1 respectively, thereby constructing a loop of the main control module 1-metal coil 2-first grounding resistor R1-ground. Since the metal coil 2 is circumferentially provided on the outer edge of the license plate, when the license plate is damaged or incomplete, the metal coil 2 itself will also be broken, thereby causing the loop of the main control module 1-metal coil 2-first grounding resistor R1-ground to be disconnected, so that the first signal received by the interface end of the main control module 1 connected with the metal coil 2 changes. Therefore, the first signal can be used to feed back whether the license plate is damaged. Based on this, the main control module 1 can be used to collect the first signal of the interface end and store the first signal in the RFID module 3, and transmit the first signal to the traffic management device through the RFID module 3 for reference by the traffic management personnel. The traffic management personnel can determine whether the license plate is damaged by observing the first signal. The first signal can be an electrical signal, such as a voltage signal or a current signal.

[0047] In the embodiment, the license plate is provided with a license plate number. The shielding detection assembly 4 can be distributed and arranged around the license plate number, and the specific position is subject to the condition that it does not affect the identification of the license plate number and is close to each digit or letter of the license plate number. The number of shielding assemblies can be set according to actual monitoring requirements.

[0048] The shielding detection component 4 is connected with the main control module 1. When the license plate number on the license plate is shielded, the shielding detection component 4 is also shielded, so that the level signal (i.e. the second signal) at the interface connected with the shielding detection component 4 in the main control module 1 changes, and the second signal can be used to feed back whether the license plate number is shielded. Based on this, the main control module 1 collects the second signal at the interface end connected with the shielding detection component 4 in real time based on the connection relationship with the shielding detection component 4, and stores the second signal in the RFID module 3, and transmits the second signal to the traffic control device through the RFID module 3 for reference by the traffic control personnel. The traffic control personnel can determine whether the license plate is shielded by observing the second signal. The second signal can be an electrical signal.

[0049] Therefore, the monitoring device for the license plate of the electric bicycle provided in the embodiment further provides the first signal for feeding back the completeness of the license plate and the second signal for feeding back the shielding condition of the license plate on the basis of the license plate number data provided by the existing RFID module 3, realizes the collection of the monitoring data of the license plate in multiple dimensions, and provides rich monitoring data of the license plate for the management of the license plate of the electric bicycle by the traffic control department, avoiding the condition that only the monitoring of the license plate number is realized in the prior art, and it is difficult to realize the monitoring of the damage and shielding of the license plate.

[0050] In one example, the RFID module 3 includes an RFID chip and its peripheral circuit, as shown in the following figure. Figure 3 As shown in the figure, the RFID module 3 can be arranged inside the license plate.

[0051] In one specific embodiment, the shielding detection component includes a photosensitive resistor.

[0052] One end of the photosensitive resistor is connected with the main control module, and the other end of the photosensitive resistor is connected with the ground through a second grounding resistor R2.

[0053] It should be noted that the resistance value of the photosensitive resistor changes with the change of the light intensity. When the license plate number is shielded, the photosensitive resistor arranged around the license plate number is also shielded, so that the resistance value of the photosensitive resistor changes, and the current size in the loop composed of the photosensitive resistor and the main control module is affected. Based on this principle, in the embodiment, the main control module is connected with the photosensitive resistor, which can be used to collect the current signal in the loop, and based on the collected current signal, the monitoring of the shielding condition of the license plate is realized.

[0054] In one example, the number of photosensitive resistors can be set according to the actual monitoring requirement. When the number of photosensitive resistors is multiple, the multiple photosensitive resistors can be connected with the main control module respectively, or the multiple photosensitive resistors are connected with the main control module after being connected in series or in parallel.

[0055] For example, it is assumed that four photosensitive resistors RG1, RG2, RG3 and RG4 are arranged, as shown in the following figure. Figure 2As shown, the two photoresistors are connected in series and then in parallel, and are connected with the main control module and the first grounding resistor, respectively. When the resistance of any photoresistor changes, the current in the loop also changes, based on which it can be determined whether the license plate is blocked.

[0056] In one specific embodiment, the blocking detection assembly further comprises: an infrared pair tube array;

[0057] The infrared pair tube array is connected with the main control module and the ground, respectively.

[0058] It should be noted that the infrared pair tube array is a kind of photoelectric sensor array composed of a plurality of infrared transmitting tubes and infrared receiving tubes in a certain arrangement. The working principle of the infrared pair tube array is that the infrared transmitting tube emits infrared light, which is reflected back when encountering an object, and the receiving tube converts the reflected light into an electrical signal based on which it can be determined whether the object exists.

[0059] In this embodiment, the infrared pair tube array is used to monitor the license plate blocking condition. The infrared pair tube array is connected with the main control module. When the license plate number is blocked, the infrared pair tube array arranged around the license plate number is also blocked, causing the infrared pair tube array to generate an electrical signal and transmit it to the main control module. Therefore, the main control module can receive the electrical signal transmitted by the infrared pair tube array and store it in the RFID chip, thereby achieving monitoring of the license plate blocking condition.

[0060] It can be understood that, in order to facilitate storage, the main control module can be used to convert the collected electrical signal into a corresponding digital signal for storage in the RFID chip.

[0061] In one example, as shown in Figure 2 The infrared pair tube array can be composed of three groups of infrared transmitting tubes and infrared receiving tubes connected in series. Each group of infrared transmitting tubes and infrared receiving tubes is connected in parallel. As shown in Figure 2 In the parallel structure, the upper one is an infrared transmitting tube and the lower one is an infrared receiving tube.

[0062] In another application example, when the license plate is deformed, it may block the photoresistor and / or infrared pair tube array arranged around the license plate number, so that the main control module can collect the corresponding electrical signal. Therefore, the monitoring device provided in this embodiment can also be used to monitor the license plate deformation condition.

[0063] In one example, as shown in Figure 3 The photoresistor and / or infrared pair tube array can be arranged around the license plate number Figure 3The black dot represented by reference numeral 7 in the figure can be set in the empty space between the numbers of the license plate number, or in the empty space between the numbers, or in the empty space between the numbers and the letters, so as to improve the accuracy of the shielding detection result. The numbers and letters pointed by reference numeral 12 are the license plate number, and in this example, the license plate number is “53768X”.

[0064] In one example, the photoresistor and the infrared pair tube array can be fixed on the license plate by pasting, or in the case that the license plate management regulations allow and do not affect the identification of the license plate number, a hole is drilled on the outer surface of the license plate, and the photoresistor and the infrared pair tube array are fixed in the small hole to improve the stability of the photoresistor and the infrared pair tube array.

[0065] It can be understood that, Figure 3 The figure shows the outer surface of the monitoring device, and the monitoring device has a cuboid shape and an accommodating space inside, which can be used to accommodate the RFID module, the main control module and other devices.

[0066] In a specific embodiment, as Figure 2 The main control module can use an existing single-chip microcomputer.

[0067] Taking the connection of the metal coil L1 as an example, as Figure 2 The single-chip microcomputer is connected to the metal coil L1, and the metal coil L1 is connected to the first grounding resistor R1.

[0068] In a specific embodiment, the license plate is provided with an indicator light;

[0069] One end of the indicator light is connected to the main control module through the first resistor R3.

[0070] The other end of the indicator light is grounded.

[0071] It should be noted that the indicator light can be used for light alarm. When the license plate is shielded or damaged and incomplete, the indicator light performs light alarm.

[0072] For example, in actual application, an indicator light with two light colors can be used. When the license plate is not shielded and complete, the main control module outputs a corresponding bias voltage signal to make the indicator light display one of the colors, and when the license plate is shielded or incomplete, the main control module outputs a corresponding bias voltage signal to make the indicator light display the other color, so that the traffic management personnel can more intuitively understand the license plate state.

[0073] In a specific embodiment, the indicator light is an LED light-emitting diode D1.

[0074] The cathode of the LED light-emitting diode D1 is grounded, and the anode of the LED light-emitting diode D1 is connected to the first resistor.

[0075] It should be noted that the LED light emitting diode D1 can adopt a double-color light emitting diode, for example, a light emitting diode capable of displaying red and green can be adopted, and red represents that the license plate is blocked or incomplete, and green represents that the license plate is not blocked and complete.

[0076] In a specific embodiment, the number of indicator lights includes at least one;

[0077] The indicator light is arranged at the four corners of the license plate.

[0078] It should be noted that the number of indicator lights can be determined according to actual conditions. The shape of the existing license plate is rectangular, which has four corners, so the four corners of the license plate can be used as the setting position of the indicator light.

[0079] For example, as shown in Figure 3 four indicator lights 5 can be arranged, and the indicator lights 5 are arranged at the four corners of the license plate, respectively, so as to more conveniently remind the traffic management personnel.

[0080] In a specific embodiment, as shown in Figure 3 a layer of solar panels 6 is arranged on the outer side of the license plate;

[0081] The solar panels 6 are connected with the main control module.

[0082] It should be noted that the solar panels 6 are used to convert light energy into electrical energy, and are connected with the main control module to provide a power source for the monitoring device.

[0083] In this embodiment, the size of the solar panels can be determined according to the size of the license plate, and the setting position is that the license plate number recognition is not affected, the interference to the blocking detection assembly is not caused, and the solar panels can be exposed to the external environment. Figure 3 The position of the solar panels 6 shown in

[0084] In a specific embodiment, a power supply capacitor is arranged on one side of the license plate;

[0085] The power supply capacitor is connected with the main control module.

[0086] It should be noted that the power supply capacitor can be arranged on the back of the license plate and can be used as a backup power supply to provide electrical energy for the monitoring device.

[0087] In a specific embodiment, the main control module is connected with the RFID module through a single bus.

[0088] It should be noted that, as shown in Figure 2 the main control module is connected with the RFID chip 11 through a single bus.

[0089] In one specific embodiment, referring to Figure 3 The license plate is provided with a signal connection point 8, which is used to connect the external device and the master control module.

[0090] It should be noted that the signal connection point 8 can also be provided on the license plate, and the master control module is connected with the signal connection point and connected with the external device through the signal connection point 8.

[0091] It can be understood that the external device refers to an external device supporting wired communication, which can interact with the master control module.

[0092] In another example, when the monitoring device is installed on an electric bicycle, a screw can be used to fix at the signal connection point 8.

[0093] Therefore, the embodiment sets the signal connection point to facilitate the connection of the external device.

[0094] As a further improvement, in one specific embodiment, referring to Figure 3 It also includes a license plate two-dimensional code 9.

[0095] The license plate two-dimensional code 9 is provided on the target position of the license plate.

[0096] It should be noted that the target position of the license plate refers to a position without any elements or license plate number, for example, it can be provided at the upper right corner of the license plate. The license plate two-dimensional code is used to feedback the license plate number of the vehicle.

[0097] In the embodiment, when the license plate number is unclear and difficult to identify, the traffic management personnel can obtain the license plate number of the vehicle by scanning the license plate two-dimensional code 9.

[0098] The embodiment provides a new license plate number acquisition channel for traffic management personnel by providing the license plate two-dimensional code 9 on the license plate, so that the traffic management personnel can manage the electric bicycles.

[0099] In one specific embodiment, referring to Figure 2 It also includes a plug assembly 10.

[0100] The plug assembly 10 is connected with the master control module through a serial interface.

[0101] It should be noted that the plug assembly 10 can adopt a 4-pin plug, which includes a power supply end VCC, a ground end GND, a transmission end TX and a receiving end RX.

[0102] The embodiment can perform signal transmission with other devices by using a 4-pin plug.

[0103] From the above, the monitoring device of the electric bicycle license plate can realize monitoring of license plate shielding at any time, and can realize monitoring of license plate integrity.

[0104] In one application, on the basis of the monitoring device of the electric bicycle license plate provided by the utility model, the monitoring device of the utility model can be connected with the main control system of the electric bicycle to realize data interaction. Specifically, the main control system of the electric bicycle can communicate with the RFID module in the monitoring device through near field communication, wired plug-in communication mode to realize data interaction and realize the application of multiple functions.

[0105] For example, the main control system of the electric bicycle can realize vehicle ID binding through data interaction with the monitoring device. Specifically, after installing the monitoring device on the electric bicycle, starting the electric bicycle, connecting the power supply, the main control system of the electric bicycle can establish communication connection with the RFID module in the monitoring device, setting the main control system of the electric bicycle to transmit the vehicle ID to the RFID module for the first time, the RFID module transmits the vehicle ID to the main control module, and sets the main control module to write the first received vehicle ID into the permanent storage area of the RFID chip, and closes the write channel of the permanent storage area of the RFID chip, so that the permanent storage area of the RFID chip no longer receives new ID, realizing the binding of vehicle ID and license plate. Among them, the function of writing data once can be set in the RFID chip in advance. In addition, during installation, the monitoring device can be fixed on the electric bicycle by using the license plate screw. The wired plug-in can use the fixed position of the license plate screw to connect the monitoring device and the main control system by using the signal line.

[0106] After binding the vehicle ID, the monitoring device can also be used to verify the vehicle ID, which can help to reduce the use and misappropriation of electric license plates, and the situation of not hanging license plate on the road. Specifically, the main control system of the electric bicycle is set in advance, when the electric bicycle is started, the main control system of the electric bicycle automatically transmits the vehicle ID to the monitoring device, and sets the monitoring device to compare the vehicle ID received this time with the vehicle ID in the permanent storage area, if they are consistent, the signal of allowing use is sent to the main control system of the electric bicycle, if they are not consistent, the signal of not allowing use is sent to the main control system of the electric bicycle. And set the main control system of the electric bicycle to normally start the electric bicycle after receiving the signal of allowing use, if the signal of not allowing use is received, the electric bicycle is not started, and a sound is reminded.

[0107] Optionally, the main control system of the electric bicycle can also realize monitoring of the state of the electric vehicle license plate through data interaction with the monitoring device, and take corresponding actions based on the monitoring results, which helps to reduce the situation that the electric vehicle license plate is damaged and still on the road. Specifically, the monitoring device can transmit the collected first signal and second signal to the main control system of the electric bicycle, and the main control system of the electric bicycle can determine whether the license plate is blocked or damaged according to the first signal and the second signal. If it is determined that the license plate is blocked or damaged, a sound is emitted to remind the user, and when it is determined that the electric bicycle is in a stationary state, the electric bicycle is locked and is not allowed to start and travel.

[0108] The monitoring device of the electric bicycle license plate provided by the utility model is described in detail above. For those skilled in the art, according to the idea of the utility model embodiment, there will be changes in the specific implementation mode and application range. In conclusion, the content of the specification should not be understood as a limitation of the utility model.

Claims

1. An electric bicycle license plate monitoring device, characterized by, Include: License plate, main control module, metal coil; The inside of the license plate is provided with an RFID module; The metal coil is circumferentially arranged on the outer edge of the license plate; The periphery of the license plate number is provided with a shielding detection assembly; One end of the metal coil is connected with the main control module, the other end of the metal coil is connected with one end of the first grounding resistor, the other end of the first grounding resistor is grounded; The shielding detection assembly and the RFID module are respectively connected with the main control module.

2. The monitoring device of claim 1, wherein, The shielding detection assembly includes a photosensitive resistor; One end of the photosensitive resistor is connected with the main control module, and the other end of the photosensitive resistor is connected with the ground through the second grounding resistor.

3. The monitoring device of claim 1, wherein, The shielding detection assembly further comprises an infrared pair tube array; The infrared pair tube array is respectively connected with the main control module and the ground.

4. The monitoring device of claim 1, wherein, The license plate is provided with an indicator light; One end of the indicator light is connected with the main control module through the first resistor; The other end of the indicator light is grounded.

5. The monitoring device of claim 1, wherein, The outer side of the license plate is provided with a layer of solar panel; The solar panel is connected with the main control module.

6. The monitoring device of claim 1, wherein, One side of the license plate is provided with a power supply capacitor; The power supply capacitor is connected with the main control module.

7. The monitoring device of claim 1, wherein, The main control module is connected with the RFID module through a single bus.

8. The monitoring device of claim 4, wherein, The number of indicator lights is at least one; The indicator light is arranged at the four corners of the license plate.

9. The monitoring device of claim 1, wherein, The license plate is provided with a signal connection point, which is used to connect the external device with the main control module.

10. The monitoring device according to claim 4 or 8, characterized in that The indicator light is a LED light emitting diode; The cathode of the LED light emitting diode is grounded, and the anode of the LED light emitting diode is connected with the first resistor.

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