An intelligent road testing device for electric vehicles

Abstract

The present application provides an intelligent road test device for electric vehicles, an intelligent road test device for electric vehicles, a current transformer in a first measurement module collects the current voltage value of the electric vehicle, an AD acquisition module sends the acquisition module to the first main control module, the first main control module collects the voltage value of the current transformer and converts it into a current value, and the first main control module sends the current value data to the 4G module of the second measurement module via the first serial port. It can be understood that the first measurement module is used to measure the current value of the electric vehicle. The handlebar voltage detection module in the second measurement module is connected to the handlebar circuit of the electric vehicle, and the battery voltage detection module is connected to the battery circuit of the electric vehicle. After the ADC acquisition module collects the handlebar voltage and the battery voltage, it is transmitted to the second main control module. The second main control module transmits the collected voltage value to the 4G module via the second serial port, and transmits the current value and voltage value to the platform via the 4G module, thereby realizing remote monitoring of riding data of the electric vehicle through the 4G network.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicles, and in particular to an intelligent road testing device for electric vehicles. Background Art

[0002] At present, in order to ensure the safe driving of electric cars, electric motorcycles, and electric tricycles, it is necessary to conduct road tests on each vehicle. The existing road test methods are as follows: Technical route: single function, such as collecting battery voltage on the instrument, the function is not comprehensive enough; dependent on the controller, the signal is detected by the controller; non-detachable: fixed behind the vehicle body for use, poor portability; cannot be monitored in real time and does not have networking function; low cost performance and expensive. Utility Model Content

[0003] In view of this, the purpose of this application is to propose an intelligent road testing device for electric vehicles to solve some or all of the technical problems in the background technology.

[0004] Based on the above purpose, the present application provides an electric vehicle intelligent road test device, comprising: a first measurement module and a second measurement module connected to each other;

[0005] The first measurement module includes: a current transformer, an AD acquisition module, a first main control module and a first serial port;

[0006] The current transformer is arranged on the electric vehicle, the current transformer is connected to the first main control module, the AD acquisition module is connected to the receiving end of the first main control module, the output end of the first main control module is connected to the receiving end of the first serial port, and the output end of the first serial port is connected to the second measurement module;

[0007] The second measurement module includes: a throttle voltage detection module, a battery voltage detection module, an ADC acquisition module, a second main control module, a second serial port and a 4G module. The input ends of the throttle voltage detection module and the battery voltage detection module are both connected to the electric vehicle, and the output ends of the throttle voltage detection module and the battery voltage detection module are both connected to the acquisition end of the ADC acquisition module. The output end of the ADC acquisition module is connected to the input end of the second main control module, the output end of the second main control module is connected to the input end of the second serial port, the output end of the second serial port is connected to the input end of the 4G module, the output end of the first serial port is connected to the input end of the 4G module, and the output end of the 4G module is connected to the platform.

[0008] Optionally, the first measurement module further includes an ADC calibration module, a speaker and an LED light, and the ADC calibration module, the speaker and the LED light are all connected to the first main control module.

[0009] Optionally, the first measuring module further includes a screen, and the screen is connected to the first main control module.

[0010] Optionally, the first measurement module further includes a power supply module, and the power supply module is connected to the current transformer, the AD acquisition module, the screen, the speaker, the ADC calibration module and the first main control module.

[0011] Optionally, the device further includes a lithium battery management circuit, and the power supply module is connected to the lithium battery management circuit.

[0012] Optionally, the second measurement module further includes a 485 transceiver, and the 485 transceiver is connected to the second main control module.

[0013] Optionally, the second measurement module further includes a CAN transceiver, and the CAN transceiver is connected to the second main control module.

[0014] Optionally, the second measurement module further includes an online communication module, one end of which is connected to the peripheral device, and the other end of which is connected to the second main control module.

[0015] Optionally, the device further includes a voltage conversion circuit, which is connected to the lithium battery management circuit, and the voltage conversion circuit is respectively connected to the 485 transceiver, CAN transceiver, one-line communication module and the second control module.

[0016] From the above, it can be seen that the present application provides an electric vehicle intelligent road test device, in which the current transformer in the first measurement module collects the current voltage value of the electric vehicle, and the AD acquisition module sends the acquisition module to the first main control module. The first main control module collects the voltage value of the current transformer and converts it into a current value. The first main control module sends the current value data to the 4G module of the second measurement module via the first serial port. It can be understood that the first measurement module is used to measure the current value of the electric vehicle. The handlebar voltage detection module in the second measurement module is connected to the handlebar line of the electric vehicle, and the battery voltage detection module is connected to the battery line of the electric vehicle. After the ADC acquisition module collects the handlebar voltage and the battery voltage, it is transmitted to the second main control module. The second main control module transmits the collected voltage value to the 4G module via the second serial port, and transmits the current value and voltage value to the platform via the 4G module, thereby realizing the remote monitoring of riding data of the electric vehicle through the 4G network, so that the platform can comprehensively evaluate the test effect of the electric vehicle based on the riding data and improve the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the structure of an electric vehicle intelligent road test device according to an embodiment of the present application;

[0019] Figure 2 This is a circuit diagram of the first main control module of an embodiment of the present application;

[0020] Figure 3 This is a circuit diagram of an AD acquisition module according to an embodiment of the present application;

[0021] Figure 4 This is a first serial port circuit diagram of an embodiment of the present application;

[0022] Figure 5 This is a circuit diagram of an ADC calibration module according to an embodiment of the present application;

[0023] Figure 6 A circuit diagram of a speaker circuit according to an embodiment of the present application;

[0024] Figure 7 A circuit diagram of a power supply module according to an embodiment of the present application;

[0025] Figure 8 This is a screen circuit diagram of an embodiment of the present application;

[0026] Fig. 9 This is a circuit diagram of a BOOT control module according to an embodiment of the present application;

[0027] Fig.10 This is a circuit diagram of a first reset module according to an embodiment of the present application;

[0028] Fig.11 A circuit diagram of a download port according to an embodiment of the present application;

[0029] Fig.12 This is a circuit diagram of an LED lamp according to an embodiment of the present application;

[0030] Fig.13 This is a circuit diagram of the second main control module in an embodiment of the present application;

[0031] Fig.14 This is a circuit diagram of a throttle voltage detection module according to an embodiment of the present application;

[0032] Fig.15 A circuit diagram of a battery voltage detection module according to an embodiment of the present application;

[0033] Fig.16 This is a circuit diagram of an ADC acquisition module in an embodiment of the present application;

[0034] Fig.17 A second serial port circuit diagram of an embodiment of the present application;

[0035] Fig.18 This is a circuit diagram of a 4G module according to an embodiment of the present application;

[0036] Fig.19 A lithium battery management circuit diagram of an embodiment of the present application;

[0037] Fig. 20 This is a circuit diagram of a 485 transceiver according to an embodiment of the present application;

[0038] Fig.21 This is a circuit diagram of a CAN transceiver according to an embodiment of the present application;

[0039] Fig. 22 A circuit diagram of a one-line communication module according to an embodiment of the present application;

[0040] Fig.23 A voltage conversion circuit diagram of an embodiment of the present application;

[0041] Fig.24 This is a circuit diagram of other modules of the embodiment of the present application.

[0042] In the attached figure:

[0043] 1. The first main control module; 2. The second main control module; 11. The current transformer; 12. The AD acquisition module; 13. The first serial port; 14. The ADC calibration module; 15. The speaker; 16. The power supply module; 17. The screen; 18. The BOOT control module; 19. The first reset module; 10. The download port; 101. The LED light; 21. The voltage detection module of the handlebar; 22. The battery voltage detection module; 23. The ADC acquisition module; 24. The second serial port; 25. The 4G module; 26. The lithium battery management circuit; 27. The 485 transceiver; 28. The CAN transceiver; 29. ​​The one-line communication module; 20. The conversion circuit. DETAILED DESCRIPTION

[0044] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0045] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0046] Based on the description of the background technology, the electric bicycle road test instrument is suitable for road test data collection and performance testing of electric bicycles, electric motorcycles, and electric tricycles. It remotely monitors the speed, power, handlebar, brake, motor, electronic control, light, voltage, current, single data bus, uart, 485, CAN and other data of electric bicycles in normal outdoor riding road environment through 4G network, and conducts comprehensive evaluation according to cloud indicators (tests of power performance, safety performance, handling performance, etc.), and the test results are calculated by cloud measurement software. This instrument has strong test capability, flexible and convenient movement, is convenient for testing in various outdoor environments, has high experimental accuracy, and good data repeatability. It can fully record and analyze the complete road test underlying data and quantify the road test data. Existing road test methods: Technical route: single function, such as battery voltage is collected on the instrument, the function is not comprehensive enough; it depends on the controller, and the signal is detected by the controller; it cannot be disassembled: it is fixed behind the vehicle body for use, and the portability is poor; it cannot be monitored in real time and does not have networking function; it is not cost-effective and expensive.

[0047] In order to solve the above technical problems, refer to Figure 1 , the utility model provides an intelligent road test device for an electric vehicle, comprising: a first measurement module and a second measurement module connected to each other;

[0048] The first measurement module includes: a current transformer 11, an AD acquisition module 12, a first main control module 1 and a first serial port 13;

[0049] The current transformer 11 is arranged on the electric vehicle, the current transformer 11 is connected to the first main control module 1, the AD acquisition module 12 is connected to the receiving end of the first main control module 1, the output end of the first main control module 1 is connected to the receiving end of the first serial port 13, and the output end of the first serial port 13 is connected to the second measurement module;

[0050] The second measurement module includes: a throttle voltage detection module 21, a battery voltage detection module 22, an ADC acquisition module 23, a second main control module 2, a second serial port 24 and a 4G module 25. The input ends of the throttle voltage detection module 21 and the battery voltage detection module 22 are connected to the electric vehicle, the output ends of the throttle voltage detection module 21 and the battery voltage detection module 22 are connected to the acquisition end of the ADC acquisition module 23, the output end of the ADC acquisition module 23 is connected to the input end of the second main control module 2, the output end of the second main control module 2 is connected to the input end of the second serial port 24, the output end of the second serial port 24 is connected to the input end of the 4G module 25, the output end of the first serial port 13 is connected to the input end of the 4G module 25, and the output end of the 4G module 25 is connected to the platform;

[0051] Among them are the first main control module 1 and the second main control module 2.

[0052] Specifically, the first measuring module and the second measuring module are integrated in two circuit boards and protected by a housing, and can be detachably installed on the electric vehicle. The specific installation structures all adopt existing ones and will not be described in detail here.

[0053] The current transformer 11 in the first measurement module collects the current voltage value of the electric vehicle, and the AD acquisition module 12 sends the acquisition module to the first main control module 1. The first main control module 1 collects the voltage value of the current transformer 11 and converts it into a current value. The first main control module 1 sends the current value data to the 4G module 25 of the second measurement module via the first serial port 13. It can be understood that the first measurement module is used to measure the current value of the electric vehicle. The handlebar voltage detection module 21 in the second measurement module is connected to the handlebar line of the electric vehicle, and the battery voltage detection module 22 is connected to the battery line of the electric vehicle. After the ADC acquisition module 23 collects the handlebar voltage and the battery voltage, it is transmitted to the second main control module 2. The second main control module 2 transmits the collected voltage value to the 4G module 25 via the second serial port 24, and transmits the current value and voltage value to the platform via the 4G module 25, thereby realizing the remote monitoring of riding data of the electric vehicle through the 4G network, so that the platform can comprehensively evaluate the test effect of the electric vehicle based on the riding data and improve the test efficiency.

[0054] The current transformer 11 may be a WSH315 sensor.

[0055] Specifically, Figure 2 As shown, the first main control module 1 includes a chip U1, such as Figure 3 As shown, the AD acquisition module 12 includes a capacitor C46 and a capacitor C47 connected in parallel, a first parallel end is connected to the 16th pin of the chip U1 through the PA7 interface, and a second parallel end is grounded. Figure 4 As shown, the first serial port 13 includes a chip H3, and the chip H3 is connected to the 13th and 14th pins of the chip U1 through USART1_TX and USART1_RX interfaces.

[0056] like Fig.13 As shown, the second main control module 2 includes a chip U26, such as Fig.14 As shown, the throttle voltage detection module 21 includes a capacitor C73 and a capacitor R96 connected in parallel, and the parallel end is connected to the 9th pin of the U26 chip through the interface TURN_SOURCE. Fig.15 As shown, the battery voltage detection module 22 includes a capacitor C72 and a capacitor R97 connected in parallel, and the parallel end is connected to the 10th pin of the U26 chip through the interface SOURCE. Fig.16 As shown, the ADC acquisition module 23 includes a first acquisition circuit, a second acquisition circuit and an output circuit connected to each other, the first acquisition circuit includes capacitors C78 and R87 in parallel, and the parallel end is connected to the 11th pin of the U26 chip through the interface ADC123_INT13. The second acquisition circuit includes capacitors C79 and R89 in parallel, and the parallel end is connected to the 15th pin of the U26 chip through the interface ADC123_INT1. The output circuit includes capacitors C80 and resistors R92 in parallel, and the parallel end is connected to resistors R91, and the other end of resistors R91 is provided with an interface ADC02. The parallel end of the first acquisition circuit is also connected to resistors R88, and the other end of resistors R88 is connected to the ADC02 interface through the ADC03 interface. The parallel end of the second acquisition circuit is also connected to resistors R90, and the other end of resistors R90 is connected to other interface modules through the ADC01 interface. The parallel end of the throttle voltage detection module 21 is also connected to a resistor R95, and the other end of the resistor R95 is connected to the ADC03 interface of the ADC acquisition module 23 through the ADC05 interface. The parallel end of the battery voltage detection module 22 is also connected to a resistor R98, and the other end of the resistor R98 is connected to the ADC03 interface of the ADC acquisition module 23 and other interface modules through the ADC04 interface. Fig.17 As shown, the second serial port 24 includes a chip H8, and the chip H8 is connected to the 16th and 17th interfaces of the chip U26 through interfaces USART2_RX and USART2_TX. Fig.18 As shown, the 4G module 25 includes a chip U19, which is connected to the 43rd and 42nd interfaces of the chip U26 through the interfaces USART1_RX and USART1_TX. The chip U19 is connected to the lithium battery management circuit 26 of other interface modules through the interface VSYS. Fig.24 As shown, other interface modules include a CN1 chip. Chip U1 and chip U26 are connected via an interface SWDIO.

[0057] In some embodiments, the first measurement module further includes an ADC calibration module 14 , a speaker 15 and an LED lamp 101 , and the ADC calibration module 14 , the speaker 15 and the LED lamp 101 are all connected to the first main control module 1 .

[0058] Specifically, the ADC calibration module 14 sends a calibration instruction to the first main control module 1 . After receiving the calibration instruction, the first main control module 1 performs calibration and prompts the completion of the calibration through the speaker 15 and the LED light 101 .

[0059] like Figure 5 As shown, the ADC calibration module 14 includes a button SW3 and a resistor R40 connected in series, and the series end is connected to the 12th interface of the chip U1 through the KEY0 interface. Figure 6 As shown, the speaker 15 includes an amplifier DSK34, and DSK34 is connected to the 11th pin of the chip U1 through a BEEP interface. Fig.11 As shown, the LED lamp 101 includes three groups of LED lamps 101 connected in parallel, each group of LED lamps 101 includes a resistor and an LED device, the first group of LED lamps 101 includes a resistor R6 and LED1, the second group of LED lamps 101 includes a resistor R7 and LED2, and the third group of LED lamps 101 includes a resistor R8 and LED3. The first group of LED lamps 101 is connected to the 19th pin of the chip U1 through PB1, the second group of LED lamps 101 is connected to the 18th pin of the chip U1 through PB2, and the third group of LED lamps 101 is connected to the 17th pin of the chip U1 through PB3.

[0060] In some embodiments, the first measuring module further includes a screen 17 , and the screen 17 is connected to the first main control module 1 .

[0061] Specifically, the screen 17 is used to display the information sent by the first main control module 1, for example, to display the ADC calibration signal and the calibration completion signal. Figure 8 As shown, the display screen 17 includes: a chip OLED2, and the chip OLED2 is connected to the 8th and 9th pins of the chip U1 through interfaces SCL and SDA.

[0062] In some embodiments, the first measurement module further includes a power supply module 16 , and the power supply module 16 is connected to the current transformer 11 , the AD acquisition module 12 , the screen 17 , the speaker 15 , the ADC calibration module 14 and the first main control module 1 .

[0063] Specifically, the power supply module 16 is used to supply power to the current transformer 11, the AD acquisition module 12 and the first main control module 1.

[0064] like Figure 7As shown, the power supply module 16 includes: a step-down chip LDO1, LDO1 supplies power to the AD acquisition module 12, the screen 17, the speaker 15, the ADC calibration module 14 and the first main control module 1 through a +3.3V interface, and the step-down chip LDO1 is connected to the VBATT interface of the lithium battery management circuit 26 through a VBUS interface, so that the lithium battery provides voltage for the power supply module 16.

[0065] In some embodiments, the first measurement module further includes a BOOT control module 18 , and the BOOT control module 18 is connected to the first main control module 1 .

[0066] Specifically, the BOOT control module 18 is used to control the reset of the first main control module 1 .

[0067] like Fig. 9 As shown, the BOOT control module 18 includes: a capacitor C10 and a resistor R5 connected in parallel, and the first parallel section is connected to the 5th pin of the chip U1 through the BOOT0 interface.

[0068] Furthermore, the first measuring module also includes a first resetting module 19 , and the first resetting module 19 is connected to the first main control module 1 .

[0069] Specifically, the first reset module 19 is used to reset the first main control module 1. Fig.10 As shown, the first reset module 19 includes: a resistor R81 and a capacitor C69 connected in series, and the series end is connected to the 10th pin of the chip U1 through NRST.

[0070] In some embodiments, the first measurement module further includes a download port 10 , and the download port 10 is connected to the first main control module 1 .

[0071] Specifically, the download port 10 is used to download data from the first main control module 1 , or input a control program into the first main control module 1 .

[0072] like Fig.11 As shown, the download port 10 includes: a chip H4, and the chip H4 is connected to the 3rd and 2nd pins of the U1 chip through the interface SWCLK and the SWDIO interface.

[0073] In some embodiments, the device further includes a lithium battery management circuit 26 , and the power supply module 16 is connected to the lithium battery management circuit 26 .

[0074] Specifically, the lithium battery management circuit 26 is used to provide power to the power supply module 16. Specifically, Fig.19As shown, the lithium battery management circuit 26 includes: a chip U21 and an interface switch, the chip U21 is connected to the interface switch through the interface VBATT, the interface switch includes a VSYS interface, and is connected to the 4G module 25 through the interface. The interface switch is connected to the VBUS interface of the power supply module 16 and the step-down chip LDO1 through the VBATT interface.

[0075] In some embodiments, the second measurement module further includes a 485 transceiver 27 , and the 485 transceiver 27 is connected to the second main control module 2 .

[0076] Specifically, the 485 transceiver 27 is equivalent to a communication module, providing a communication function for the second main control module 2. Fig. 20 As shown, the 485 transceiver 27 includes a chip U28, and the chip U28 is connected to the 29th, 28th and 30th pins of the chip U26 through interfaces RS48_RXD, RS485_DE_NRE and RS485_TXD.

[0077] In some embodiments, the second measurement module further includes a CAN transceiver 28 , and the CAN transceiver 28 is connected to the second main control module 2 .

[0078] Specifically, the CAN transceiver 28 is used to connect to the CAN line of the electric vehicle to obtain the CAN signal of the electric vehicle. Fig.21 As shown, the CAN transceiver 28 includes a chip U27, which is connected to the 43rd and 42nd pins of the chip U26 through interfaces CAN_RX and CAN_TX. The chip U27 is connected to the CAN bus of the electric vehicle through interfaces CANL and CANH.

[0079] In some embodiments, the second measurement module further includes an online communication module 29 , one end of which is connected to the peripheral device, and the other end of which is connected to the second main control module 2 .

[0080] Specifically, the one-line communication module 29 is used to connect the second main control module 2 with an external device. Fig. 22 As shown, the one-line communication module 29 includes: a resistor R93, a capacitor C74, a resistor R94 and a transistor Q3 connected to each other. The one-line communication module 29 is connected to the 8th pin of the chip U26 through the interface SIF. It can be connected to an external device through the YXT interface.

[0081] In some embodiments, the second measurement module also includes a voltage conversion circuit 20, and the voltage conversion circuit 20 is connected to the lithium battery management circuit 26, and the voltage conversion circuit 20 is respectively connected to the 485 transceiver 27, the CAN transceiver 28, the one-line communication module 29 and the second control module.

[0082] Specifically, the voltage provided by the lithium battery management circuit is converted by the voltage conversion circuit 20 so as to provide the second measurement module with a suitable voltage, thereby ensuring stable testing of the second measurement module. Fig.23 As shown, the voltage conversion circuit 20 includes a chip U17, which is connected to the VSYS interface of the lithium battery management circuit 26 through the interface VSYS, and converts the 5V voltage into a 3.3V output.

[0083] In some embodiments, the second measurement module further includes a BOOT enabling module, a second reset module, a download module and a crystal oscillator.

[0084] Specifically, the BOOT enabling module, the second reset module, the download module, other interface modules and the crystal oscillator can ensure the stable operation of the second control module, and their functions are consistent with the prior art and will not be described in detail. Fig.24 As shown, the BOOT enabling module includes a resistor R100, which is connected to the 68th pin of the U26 chip through the interface BOOT0. The second reset module includes a resistor R99 and a capacitor C81 connected in series, and the series end is connected to the 7th pin of the chip U28 through the interface NRST. The download module includes a chip H7, which can be a plug-in. The chip H7 is connected to the 46th and 49th pins of the U26 chip through the interfaces SWDIO and SWDCLK. The crystal oscillator includes a chip X4, and the chip X4 is connected to the 5th pin of the chip U26 through the interface OSC_IN.

[0085] Furthermore, the utility model further describes that in the first measurement module, power supply: input 5V voltage is stepped down by LDO to power the Air001 chip (U1 chip), screen, speaker, button. The screen, speaker, button, and LED are mounted on different IO ports of Air001 respectively. The chip of the main control module reads the value of the sensor through the AD acquisition port, and uses it for screen display and external transmission after calculation. The current voltage value is collected through the current transformer model WSH315 sensor, and the main chip converts it into the current current value after reading it through AD, which is displayed on the screen, and the data is sent to the outside through the serial port. Instructions for use: The main power supply line of the electric bicycle can pass through the circuit board of the first measurement module, and then this product is powered by 5V. After power-on, the screen lights up and displays: "Please calibrate!", and then use the button circuit calibration (that is, the ADC calibration module). After the calibration is completed, the speaker will emit two "di" sounds, indicating that the calibration has been completed. After that, turn on the electric vehicle, the screen will display the current current value in real time, and the main chip will send the current measured current value to the outside through the serial port.

[0086] In the second measurement module, power supply: Type-c input power to the lithium battery management chip to charge the lithium battery, and power the chip after LDO step-down; if there is no external power supply, the lithium battery will power the chip after LDO step-down. The main chip AIR32F103RPT6 peripherals: reset holding current, crystal oscillator circuit, two AD acquisition port interfaces (one to collect battery voltage, one to collect handlebar voltage), one line interface (read controller port line signal), one CAN bus interface, one 485 interface, one serial port and 4G communication. Reserve 2 serial ports and 3 AD acquisition ports. The peripherals collect signals, and the main control chip reads, analyzes, and pushes them to the screen, 4G, serial port, 485, and CAN for interaction. The one-line communication module reads the IO port once by configuring the timer 50us, and records the time of high and low levels, stores, analyzes, and reconstructs it using DMA to send it to the serial port or other peripherals. The AD acquisition circuit uses ADC to collect voltage and process data after resistor voltage division. How to use: Place the device in the electric bicycle, connect the wires according to the wiring definition, turn on the power switch, the main control chip will read the one-line data in real time, and the AD will automatically collect the voltage. The main control chip will reconstruct the data and send it to the 4G module or screen through the serial port for display. The 4G module will push the data to the cloud platform for display.

[0087] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0088] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present application (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0089] Although the present invention has been described in conjunction with specific embodiments of the present invention, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art based on the foregoing description.For example, other memory architectures may use the discussed embodiments.

[0090] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. An electric vehicle intelligent road test device, characterized in that: include: a first measurement module and a second measurement module connected to each other; The first measurement module comprises: a current transformer (11), an AD acquisition module (12), a first main control module (1) and a first serial port (13); The current transformer (11) is arranged on the electric vehicle, the current transformer (11) is connected to the first main control module (1), the AD acquisition module (12) is connected to the receiving end of the first main control module (1), the output end of the first main control module (1) is connected to the receiving end of the first serial port (13), and the output end of the first serial port (13) is connected to the second measurement module; The second measurement module comprises: a throttle voltage detection module (21), a battery voltage detection module (22), an ADC acquisition module (23), a second main control module (2), a second serial port (24) and a 4G module (25); the input ends of the throttle voltage detection module (21) and the battery voltage detection module (22) are both connected to the electric vehicle; the output ends of the throttle voltage detection module (21) and the battery voltage detection module (22) are both connected to the acquisition end of the ADC acquisition module (23); the output end of the ADC acquisition module (23) is connected to the input end of the second main control module (2); the output end of the second main control module (2) is connected to the input end of the second serial port (24); the output end of the second serial port (24) is connected to the input end of the 4G module (25); the output end of the first serial port (13) is connected to the input end of the 4G module (25); and the output end of the 4G module (25) is connected to the platform.

2. The electric vehicle intelligent road test device according to claim 1, characterized in that: The first measurement module further comprises an ADC calibration module (14), a loudspeaker (15) and an LED lamp (101); the ADC calibration module (14), the loudspeaker (15) and the LED lamp (101) are all connected to the first main control module (1).

3. The electric vehicle intelligent road test device according to claim 2, characterized in that: The first measuring module also includes a screen (17), and the screen (17) is connected to the first main control module (1).

4. The electric vehicle intelligent road test device according to claim 3, characterized in that: The first measurement module further comprises a power supply module (16), wherein the power supply module (16) is connected to the current transformer (11), the AD acquisition module (12), the screen (17), the speaker (15), the ADC calibration module (14) and the first main control module (1).

5. The electric vehicle intelligent road test device according to claim 4, characterized in that: The device also includes a lithium battery management circuit (26), and the power supply module (16) is connected to the lithium battery management circuit (26).

6. The electric vehicle intelligent road test device according to claim 5, characterized in that: The second measurement module further comprises a 485 transceiver (27), and the 485 transceiver (27) is connected to the second main control module (2).

7. The electric vehicle intelligent road test device according to claim 6, characterized in that: The second measurement module also includes a CAN transceiver (28), and the CAN transceiver (28) is connected to the second main control module (2).

8. The electric vehicle intelligent road test device according to claim 7, characterized in that: The second measurement module further comprises a one-line communication module (29), one end of the one-line communication module (29) is connected to the peripheral device, and the other end is connected to the second main control module (2).

9. The electric vehicle intelligent road test device according to claim 8, characterized in that: The device further comprises a voltage conversion circuit (20), wherein the voltage conversion circuit (20) is connected to the lithium battery management circuit (26), and the voltage conversion circuit (20) is respectively connected to the 485 transceiver (27), the CAN transceiver (28), the one-line communication module (29) and the second main control module.

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