Single-wire communication circuit, device and electric two-wheeled vehicle

Abstract

This utility model discloses a single-wire communication circuit, device, and electric two-wheeler, applied in the field of communication circuit technology, to solve the problem that the structure and wiring harness of the communication circuit in existing electric two-wheelers are relatively complex. Specifically, it includes a wake-up detection module that detects the wake-up signal sent by the external controller through a single-wire channel, shapes and converts the wake-up signal to obtain a wake-up pulse, and outputs it to the wake-up terminal of the vehicle data acquisition module; a drive module that receives the data signal output by the vehicle data acquisition module, shapes and amplifies the data signal to obtain the target data signal, and outputs it to the external controller through a single-wire channel; both the wake-up detection module and the drive module achieve bidirectional communication with the external controller through the same single-wire channel, significantly reducing the number of wiring harnesses and lowering the complexity of wiring and communication circuit structure.

Description

Technical Field

[0001] This utility model relates to the field of communication circuit technology, and in particular to a single-wire communication circuit, device, and electric two-wheeler. Background Technology

[0002] With the continuous development of electric two-wheeler technology and the improvement of its intelligence level, vehicles are integrating more and more electronic control units (ECUs), sensors, display modules, and wireless communication modules to achieve various functions such as remote monitoring, fault diagnosis, positioning and navigation, and intelligent start. The information interaction between these electronic components relies on the onboard communication circuit system, which typically adopts a distributed architecture. Each module is connected to the main control unit through independent wires or harnesses, forming a point-to-point or multi-node communication network. In existing technologies, to meet the data transmission needs of different functional modules, multiple dedicated signal lines, power lines, and ground lines are often required, along with corresponding interface circuits and protection circuits. This results in a complex overall wiring structure for the communication circuit, occupying a large amount of space and making assembly difficult. Furthermore, the presence of numerous harnesses not only increases the overall vehicle weight and manufacturing cost but also increases the probability of faults such as aging wiring and poor contact, making the complexity of the communication circuit structure and wiring harnesses in electric two-wheelers increasingly prominent. Utility Model Content

[0003] This utility model provides a single-wire communication circuit, device, and electric two-wheeler to solve the problem that the structure and wiring harness of the communication circuit in existing electric two-wheelers are relatively complex.

[0004] The technical solution provided by this utility model embodiment is as follows: On the one hand, this utility model embodiment provides a single-wire communication circuit, including: a wake-up detection module and a driver module; The input of the wake-up detection module is connected to the output of the external controller via a single-wire channel, and the output of the wake-up detection module is connected to the wake-up terminal of the vehicle data acquisition module; the input of the drive module is connected to the data output of the vehicle data acquisition module, and the output of the drive module is connected to the input of the external controller via a single-wire channel. The wake-up detection module is used to detect the wake-up signal sent by the external controller through a single-line channel, and to perform shaping and level conversion on the wake-up signal to obtain a wake-up pulse and output it to the wake-up terminal of the vehicle data acquisition module. The drive module receives the data signal output by the vehicle data acquisition module, performs shaping and amplification processing on the data signal, obtains the target data signal, and outputs it to the external controller through a single-wire channel.

[0005] Optionally, the wake-up detection module includes: a first resistor, a second resistor, a third resistor, a first transistor, and a first capacitor; The emitter of the first transistor is connected to an external power supply, the base of the first transistor is connected to the first end of the first resistor, and the collector of the first transistor is connected to the wake-up terminal of the vehicle data acquisition module. The second end of the first resistor is connected to an external controller via a single-wire channel; The first end of the second resistor is connected to the emitter of the first transistor, and the second end of the second resistor is connected to the base of the first transistor. The first end of the third resistor is connected to the collector of the first transistor, and the second end of the third resistor is connected to ground. The first terminal of the first capacitor is connected to the collector of the first transistor, and the second terminal of the first capacitor is connected to ground.

[0006] Optionally, the driver module includes: a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a second transistor, and a third transistor; The emitter of the second transistor is connected to ground, the base of the second transistor is connected to the collector of the third transistor, and the collector of the second transistor is connected to an external controller via a single-wire channel. The emitter of the third transistor is connected to ground, the base of the third transistor is connected to the first end of the fourth resistor, and the collector of the third transistor is also connected to the first end of the fifth resistor. The second end of the fourth resistor is connected to the data output terminal of the vehicle data acquisition module, and the second end of the fourth resistor is also connected to an external power supply via the sixth resistor. The second terminal of the fifth resistor is connected to an external power supply; The first end of the seventh resistor is connected to the base of the third transistor, and the second end of the seventh resistor is connected to the emitter of the third transistor.

[0007] Optionally, the drive module may also include: a first transient voltage suppression diode; The negative terminal of the first transient voltage suppression diode is connected to the data output terminal of the vehicle data acquisition module, and the positive terminal of the first transient voltage suppression diode is connected to ground.

[0008] Optionally, the single-wire communication circuit may also include: a protection module; The protection module is installed on the single-line channel; the protection module is used to suppress instantaneous overvoltage on the single-line channel.

[0009] Optionally, the protection module includes: a second transient voltage suppression diode; The negative terminal of the second transient voltage suppressor diode is connected to the single-line channel, and the positive terminal of the second transient voltage suppressor diode is connected to ground.

[0010] Optionally, the protection module may also include: a fuse; The fuse is connected in series on a single-wire channel.

[0011] On the other hand, this utility model embodiment provides a single-line communication device, including: a controller and the above-mentioned single-line communication circuit; The single-wire communication circuit is connected to the controller via a single-wire channel, and also to the vehicle data acquisition module.

[0012] Optionally, the single-line communication device may also include: a 4G communication circuit; The 4G communication circuit is connected to the controller via a serial communication interface.

[0013] On the other hand, this utility model embodiment provides an electric two-wheeled vehicle, including: a vehicle data acquisition module and the above-mentioned single-wire communication device; The single-wire communication device is connected to the vehicle data acquisition module.

[0014] The beneficial effects of this utility model embodiment are as follows: In this embodiment of the invention, the single-wire communication circuit includes a wake-up detection module and a drive module. The input of the wake-up detection module is connected to the output of an external controller via a single-wire channel, and its output is connected to the wake-up terminal of the vehicle data acquisition module. The wake-up detection module detects the wake-up signal sent by the external controller and performs shaping and level conversion processing to output a wake-up pulse. The input of the drive module is connected to the data output of the vehicle data acquisition module, and its output is connected to the input of the external controller via a single-wire channel. It is used to shape and amplify the data signal and output the target data signal through the single-wire channel. Since both the wake-up detection module and the drive module achieve bidirectional communication with the external controller through the same single-wire channel, compared with the traditional multi-wire communication scheme, the number of wires is significantly reduced, and the wiring complexity and communication circuit structure complexity are reduced. At the same time, the wake-up detection module shapes and converts the wake-up signal, and the drive module shapes and amplifies the data signal, improving the anti-interference ability and transmission reliability of the signal in the complex vehicle electromagnetic environment, enhancing compatibility and stability, and ultimately realizing efficient, reliable, and low-cost data interaction between the vehicle data acquisition module and the external controller.

[0015] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the first circuit structure of the single-wire communication circuit in this embodiment of the present invention; Figure 2 This is a schematic diagram of a second circuit structure for a single-wire communication circuit in an embodiment of this utility model; Figure 3 This is a schematic diagram of the third circuit structure of the single-wire communication circuit in this embodiment of the present invention; Figure 4 This is a schematic diagram of the fourth circuit structure of the single-wire communication circuit in this embodiment of the present invention; Figure 5 This is a schematic diagram of the fifth circuit structure of the single-wire communication circuit in this embodiment of the present invention; Figure 6 This is a schematic diagram of the first circuit structure of the single-line communication device in this embodiment of the present invention; Figure 7 This is a schematic diagram of a second circuit structure of the single-wire communication device in an embodiment of this utility model; Figure 8 This is a schematic diagram of the structure of the electric two-wheeled vehicle in the embodiment of this utility model.

[0017] Icons: 100 - Single-wire communication circuit; 110 - Wake-up detection module; 120 - Driver module; R1 - First resistor; R2 - Second resistor; R3 - Third resistor; Q1 - First transistor; C1 - First capacitor; R4 - Fourth resistor; R5 - Fifth resistor; R6 - Sixth resistor; R7 - Seventh resistor; Q2 - Second transistor; Q3 - Third transistor; TVS1 - First transient voltage suppressor diode; 130 - Protection module; TVS2 - Second transient voltage suppressor diode; FU - Fuse; 200 - Single-wire communication device; 210 - Controller; 220 - 4G communication circuit; 300 - Electric two-wheeler; 310 - Vehicle data acquisition module. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] This utility model embodiment provides a single-wire communication circuit 100, see reference. Figure 1 As shown, the single-wire communication circuit 100 includes: a wake-up detection module 110 and a driver module 120; The input terminal of the wake-up detection module 110 is connected to the output terminal of the external controller via a single-wire channel 101, and the output terminal of the wake-up detection module 110 is connected to the wake-up terminal of the vehicle data acquisition module; the input terminal of the drive module 120 is connected to the data output terminal of the vehicle data acquisition module, and the output terminal of the drive module 120 is connected to the input terminal of the external controller via a single-wire channel 101. The wake-up detection module 110 is used to detect the wake-up signal sent by the external controller through the single-line channel 101, and to perform shaping and level conversion processing on the wake-up signal to obtain a wake-up pulse and output it to the wake-up terminal of the vehicle data acquisition module. The drive module 120 is used to receive the data signal output by the vehicle data acquisition module, perform shaping and signal amplification processing on the data signal, obtain the target data signal, and output it to the external controller through the single-wire channel 101.

[0020] exist Figure 1In the single-wire communication circuit 100 shown, the single-wire channel 101 serves as a shared transmission medium, transmitting different types of signals at different time stages. The input of the wake-up detection module 110 is connected to the signal output of the external controller via the single-wire channel 101, and the output of the wake-up detection module 110 is connected to the wake-up signal input of the vehicle data acquisition module. When the external controller needs to communicate with the vehicle data acquisition module, it first sends a wake-up signal with specific timing characteristics via the single-wire channel 101. This wake-up signal can be a high level lasting a specific duration. After detecting the wake-up signal, the wake-up detection module 110 shapes the signal using internal circuitry, filtering out potential noise interference and standardizing its pulse edges; it also converts the signal level to a level standard suitable for the wake-up port recognition of the vehicle data acquisition module. The shaping and level conversion generate a wake-up pulse, reliably triggering the vehicle data acquisition module to enter normal operation from low-power sleep mode. The input of the drive module 120 is connected to the data output of the vehicle data acquisition module, and the output of the drive module 120 is also connected to the single-wire channel 101, and then to the signal input of the external controller. After the vehicle data acquisition module is activated, the microcontroller inside the module begins executing the data acquisition and processing program, and sends the data to be reported (such as battery level, vehicle speed, mileage, etc.) out from the data output terminal in the form of digital signals. The drive module 120 receives this data signal, performs signal shaping and power amplification on the data signal, improves its waveform quality, ensures signal integrity, and significantly enhances the signal's current driving capability, enabling it to overcome potential line impedance, parasitic capacitance, and external interference in the single-wire channel 101, achieving reliable long-distance transmission. The target data signal obtained after signal shaping and power amplification is fed into the single-wire channel 101, where it is accurately captured and decoded by the external controller in receiving mode.

[0021] In this way, since both the wake-up detection module 110 and the drive module 120 achieve bidirectional communication with the external controller through the same single-wire channel 101, compared with the traditional multi-wire communication scheme, the number of wire harnesses is significantly reduced, and the wiring complexity and communication circuit structure complexity are reduced. At the same time, the wake-up detection module 110 performs shaping and level conversion processing on the wake-up signal, and the drive module 120 performs shaping and signal amplification processing on the data signal, which improves the anti-interference ability and transmission reliability of the signal in the complex vehicle electromagnetic environment, enhances compatibility and stability, and ultimately realizes efficient, reliable and low-cost data interaction between the vehicle data acquisition module and the external controller.

[0022] In one possible implementation, see [reference] Figure 2 As shown, the wake-up detection module 110 includes: a first resistor R1, a second resistor R2, a third resistor R3, a first transistor Q1, and a first capacitor C1; The emitter of the first transistor Q1 is connected to an external power supply, the base of the first transistor Q1 is connected to the first end of the first resistor R1, and the collector of the first transistor Q1 is connected to the wake-up terminal of the vehicle data acquisition module. The second end of the first resistor R1 is connected to an external controller via a single-wire channel 101; The first end of the second resistor R2 is connected to the emitter of the first transistor Q1, and the second end of the second resistor R2 is connected to the base of the first transistor Q1. The first end of the third resistor R3 is connected to the collector of the first transistor Q1, and the second end of the third resistor R3 is connected to ground. The first terminal of the first capacitor C1 is connected to the collector of the first transistor Q1, and the second terminal of the first capacitor C1 is connected to ground.

[0023] exist Figure 2 In the single-wire communication circuit 100 shown, the first transistor Q1 can be a PNP transistor, serving as the core switching device in the circuit. The first resistor R1 acts as an input resistor, limiting current and preventing excessive current flowing from the single-wire channel 101 from damaging the base of the first transistor Q1. The second resistor R2 is connected between the emitter and base of the first transistor Q1. R2 acts as a pull-up resistor, providing a base bias voltage to prevent false turn-on of the first transistor Q1 and improving the circuit's anti-interference capability. The third resistor R3 acts as a pull-down resistor, ensuring that the collector of the first transistor Q1 outputs a low level when Q1 is off. The first capacitor C1 filters out high-frequency interference signals to prevent false wake-up. In practical applications, when the external controller needs to obtain vehicle status, it actively pulls down the level of the single-wire channel 101 and maintains it for a specific time. At this time, the base potential of the first transistor Q1 decreases, and the emitter junction is forward biased and conducts. The power supply voltage VCC is applied to the third resistor R3 and the first capacitor C1 through the conducting first transistor Q1, and outputs a high level to the wake-up terminal of the vehicle data acquisition module, thereby waking up the vehicle data acquisition module.

[0024] In one possible implementation, see [reference] Figure 3 As shown, the drive module 120 includes: a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, a second transistor Q2, and a third transistor Q3; The emitter of the second transistor Q2 is connected to ground, the base of the second transistor Q2 is connected to the collector of the third transistor Q3, and the collector of the second transistor Q2 is connected to an external controller via a single-wire channel 101. The emitter of the third transistor Q3 is connected to ground, the base of the third transistor Q3 is connected to the first end of the fourth resistor R4, and the collector of the third transistor Q3 is also connected to the first end of the fifth resistor R5. The second end of the fourth resistor R4 is connected to the data output terminal of the vehicle data acquisition module. The second end of the fourth resistor R4 is also connected to the external power supply via the sixth resistor R6. The second terminal of the fifth resistor R5 is connected to an external power supply; The first end of the seventh resistor R7 is connected to the base of the third transistor Q3, and the second end of the seventh resistor R7 is connected to the emitter of the third transistor Q3.

[0025] exist Figure 3 In the single-wire communication circuit 100 shown, the driver module 120 employs a two-stage amplification driver circuit composed of a second transistor Q2 and a third transistor Q3. This two-stage amplification structure provides a large overall current amplification factor and can quickly charge and discharge the parasitic capacitance on the single-wire channel 101, improving signal edges and generating steeper rising and falling edges, thus achieving data signal shaping and amplification. The fourth resistor R4 serves as current limiting and impedance matching. The fifth resistor R5 acts as a pull-up resistor for the second transistor Q2. The sixth resistor R6 acts as a pull-up resistor for the third transistor Q3. The seventh resistor R7 is connected in series in the base circuit of the second transistor Q2 as a base current limiting resistor to prevent excessive base current from damaging the second transistor Q2.

[0026] In practical applications, after the vehicle data acquisition module is activated, it can output data pulses containing information such as battery level, vehicle speed, and total mileage. When the data pulse is high, the third transistor Q3 is turned on, and its collector is pulled low, which in turn pulls the base potential of the second transistor Q2 low and turns it off, resulting in a high level for single-line channel 101. When the data pulse is low, the third transistor Q3 is turned off, the second transistor Q2 is saturated and turned on, and single-line channel 101 is pulled low.

[0027] In one possible implementation, see [reference] Figure 3 As shown, the drive module 120 also includes: a first transient voltage suppression diode TVS1; The negative terminal of the first transient voltage suppression diode TVS1 is connected to the data output terminal of the vehicle data acquisition module, and the positive terminal of the first transient voltage suppression diode TVS1 is connected to ground.

[0028] exist Figure 3 In the single-wire communication circuit 100 shown, a first transient voltage suppression diode TVS1 is also provided between the data output terminal of the vehicle data acquisition module and the ground. The first transient voltage suppression diode TVS1 is used to prevent electrostatic discharge or reverse electromotive force from damaging the drive module 120.

[0029] In one possible implementation, see [reference] Figure 4 As shown, the single-wire communication circuit 100 also includes: a protection module 130; The protection module 130 is installed on the single-line channel 101; the protection module 130 is used to suppress instantaneous overvoltage on the single-line channel 101.

[0030] exist Figure 4 In the single-wire communication circuit 100 shown, the protection module 130 is installed on the line of the single-wire channel 101, serving as the first level of protection between the entire circuit and the external physical interface. The core function of the protection module 130 is to suppress or absorb transient overvoltages entering from the single-wire channel 101. The protection module 130 typically achieves graded protection by using voltage clamping devices. When a transient overvoltage occurs on the single-wire channel 101, if the overvoltage exceeds the breakdown threshold of the voltage clamping device, the voltage clamping device breaks down and immediately switches to a low-impedance state, bypassing the overvoltage energy to ground and forcibly clamping the potential on the channel conductor below the clamping voltage, preventing high voltage from directly impacting subsequent circuits. In addition, the protection module 130 can also include current blocking devices to form graded protection with the voltage clamping devices. The current blocking devices can be connected in series on the single-wire channel 101 to provide protection against continuous overcurrent or extremely large surge currents. When a serious fault or continuous discharge of the clamping device causes the circuit current to increase abnormally and exceed the rated value of the current blocking device, the current blocking device physically cuts off the single-line channel 101 to prevent the fault from spreading and the device from overheating and being damaged.

[0031] In one possible implementation, see [reference] Figure 5 As shown, the protection module 130 includes: a second transient voltage suppression diode TVS2; The negative terminal of the second transient voltage suppressor diode TVS2 is connected to the single-line channel 101, and the positive terminal of the second transient voltage suppressor diode TVS2 is connected to ground.

[0032] exist Figure 5 In the single-wire communication circuit 100 shown, when a momentary high voltage is generated on the single-wire channel 101 due to lightning strike, static electricity or power short circuit, the second transient voltage suppression diode TVS2 will quickly conduct to clamp the voltage, protecting the devices in the subsequent wake-up detection module 110 and drive module 120 from being damaged, thereby effectively protecting the safety of the internal circuit.

[0033] In one possible implementation, see [reference] Figure 5 As shown, the protection module 130 also includes: a fuse FU; The fuse FU is connected in series to the single-wire channel 101.

[0034] exist Figure 5 In the single-wire communication circuit 100 shown, when a large current surge is generated on the single-wire channel 101 due to lightning strike, static electricity or power short circuit, the fuse FU will trip or be in a high-resistance state, cutting off the single-wire channel 101, thereby effectively protecting the safety of the internal circuit.

[0035] Based on the same concept, this utility model embodiment also provides a single-wire communication device, see reference. Figure 6 As shown, the single-wire communication device 200 includes: a controller 210 and the aforementioned single-wire communication circuit 100; The single-wire communication circuit 100 is connected to the controller 210 through the single-wire channel 101, and the single-wire communication circuit 100 is also connected to the vehicle data acquisition module 310.

[0036] In practical applications, the controller 210 is typically the vehicle's main control microcontroller 210 or a dedicated communication processor. The controller 210 is responsible for generating timed wake-up commands and parsing received data signals, among other communication logic. The single-wire communication device 200, by integrating the single-wire communication circuit 100, eliminates the need for the controller 210 to directly drive long-distance multi-line communication or process complex wake-up signals, simplifying the controller 210's interface design. As a standard interface module, the single-wire communication device 200 decouples the controller 210 from the vehicle's data acquisition module, providing stable and reliable low-level communication services. This allows the controller 210 to access data acquisition nodes distributed throughout the vehicle in a simple and standardized manner.

[0037] In one possible implementation, see [reference] Figure 7 As shown, the single-line communication device 200 also includes: a 4G communication circuit 220; The 4G communication circuit 220 is connected to the controller 210 via a serial communication interface.

[0038] In practical applications, the 4G communication circuit 220 establishes a data connection with the controller 210 through a serial communication interface. This serial interface can be an asynchronous serial interface (UART). The 4G communication circuit 220 includes a SIM card interface circuit, a radio frequency antenna interface circuit, a serial communication interface circuit, and a 4G communication module integrating a baseband processor, a radio frequency unit, and a memory. The module obtains network identity through the SIM card interface; transmits and receives wireless signals through the radio frequency antenna interface; and receives instructions and data from the controller 210 through the serial communication interface. Specifically, after the controller 210 obtains local data such as battery level and vehicle speed from the vehicle data acquisition module through the single-wire communication circuit 100, it performs format conversion processing on the local data and then sends it to the 4G communication circuit 220 through the serial communication interface. The 4G communication circuit 220 then encapsulates the data through the cellular network and transmits it to the cloud backend server.

[0039] Based on the same concept, this utility model also provides an electric two-wheeled vehicle, see reference. Figure 8 As shown, the electric two-wheeler 300 includes: a vehicle data acquisition module 310 and the aforementioned single-wire communication device 200; The single-wire communication device 200 is connected to the vehicle data acquisition module 310.

[0040] In practical applications, the vehicle data acquisition module 310 in this electric two-wheeler 300 may include a battery management system power acquisition unit, a GPS module location acquisition unit, etc. The single-wire communication device 200, acting as a data aggregation and communication hub, connects to each unit in the vehicle data acquisition module 310 via its single-wire interface to collect vehicle operating status information, enabling the controller 210 within the single-wire communication device 200 to integrate the information. This fundamentally optimizes the complex electrical connections of traditional two-wheelers with multiple wiring harnesses and interfaces, achieving centralized management and remote monitoring of vehicle status information at a lower cost and with higher reliability. It represents a fundamental hardware solution for the intelligentization of electric two-wheelers.

[0041] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0042] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this utility model without departing from the spirit and scope of the embodiments of this utility model. Therefore, if these modifications and variations to the embodiments of this utility model fall within the scope of the claims of this utility model and their equivalents, then this utility model also intends to include these modifications and variations.

Claims

1. A single-wire communication circuit, characterized in that, include: Wake-up detection module and driver module; The input terminal of the wake-up detection module is connected to the output terminal of the external controller via a single-wire channel, and the output terminal of the wake-up detection module is connected to the wake-up terminal of the vehicle data acquisition module; the input terminal of the drive module is connected to the data output terminal of the vehicle data acquisition module, and the output terminal of the drive module is connected to the input terminal of the external controller via the single-wire channel. The wake-up detection module is used to detect the wake-up signal sent by the external controller through the single-line channel, and to perform shaping and level conversion processing on the wake-up signal to obtain a wake-up pulse and output it to the wake-up terminal of the vehicle data acquisition module. The drive module is used to receive the data signal output by the vehicle data acquisition module, perform shaping and signal amplification processing on the data signal, obtain the target data signal, and output it to the external controller through the single-line channel.

2. The single-wire communication circuit according to claim 1, characterized in that, The wake-up detection module includes: a first resistor, a second resistor, a third resistor, a first transistor, and a first capacitor; The emitter of the first transistor is connected to an external power supply, the base of the first transistor is connected to the first end of the first resistor, and the collector of the first transistor is connected to the wake-up terminal of the vehicle data acquisition module. The second end of the first resistor is connected to an external controller via a single-wire channel; The first end of the second resistor is connected to the emitter of the first transistor, and the second end of the second resistor is connected to the base of the first transistor. The first end of the third resistor is connected to the collector of the first transistor, and the second end of the third resistor is connected to ground. The first terminal of the first capacitor is connected to the collector of the first transistor, and the second terminal of the first capacitor is connected to ground.

3. The single-wire communication circuit according to claim 1, characterized in that, The driving module includes: a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a second transistor, and a third transistor; The emitter of the second transistor is connected to ground, the base of the second transistor is connected to the collector of the third transistor, and the collector of the second transistor is connected to an external controller via a single-wire channel. The emitter of the third transistor is connected to ground, the base of the third transistor is connected to the first end of the fourth resistor, and the collector of the third transistor is also connected to the first end of the fifth resistor. The second end of the fourth resistor is connected to the data output terminal of the vehicle data acquisition module, and the second end of the fourth resistor is also connected to an external power supply via the sixth resistor; The second end of the fifth resistor is connected to an external power source; The first end of the seventh resistor is connected to the base of the third transistor, and the second end of the seventh resistor is connected to the emitter of the third transistor.

4. The single-wire communication circuit according to claim 3, characterized in that, The driving module further includes: a first transient voltage suppression diode; The negative terminal of the first transient voltage suppression diode is connected to the data output terminal of the vehicle data acquisition module, and the positive terminal of the first transient voltage suppression diode is connected to ground.

5. The single-wire communication circuit according to any one of claims 1-4, characterized in that, Also includes: Protection module; The protection module is installed on the single-line channel; the protection module is used to suppress instantaneous overvoltage on the single-line channel.

6. The single-wire communication circuit according to claim 5, characterized in that, The protection module includes: a second transient voltage suppression diode; The negative terminal of the second transient voltage suppressor diode is connected to the single-wire channel, and the positive terminal of the second transient voltage suppressor diode is connected to ground.

7. The single-wire communication circuit according to claim 6, characterized in that, The protection module also includes: a fuse; The fuse is connected in series to the single-wire channel.

8. A single-wire communication device, characterized in that, include: The controller and the single-wire communication circuit as described in any one of claims 1-7; The single-wire communication circuit is connected to the controller via a single-wire channel, and the single-wire communication circuit is also connected to the vehicle data acquisition module.

9. The single-line communication device according to claim 8, characterized in that, Also includes: 4G communication circuit; The 4G communication circuit is connected to the controller via a serial communication interface.

10. An electric two-wheeled vehicle, characterized in that, include: The vehicle data acquisition module and the single-wire communication device as described in claim 8 or 9; The single-wire communication device is connected to the vehicle data acquisition module.

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