Portable vehicle part function tester

Abstract

The utility model discloses a portable function tester for vehicle parts. The portable function tester comprises an electrical parameter detection module, a communication detection module, a PWM signal detection module and a processor, the electrical parameter detection module is electrically connected with the processor and the to-be-detected piece and is used for acquiring electrical parameter data of the to-be-detected piece and sending the electrical parameter data to the processor; the communication detection module is electrically connected with the processor and the to-be-detected piece, and is used for acquiring message information of the to-be-detected piece and sending the message information to the processor; the PWM signal detection module is electrically connected with the processor and the to-be-detected piece, and is used for acquiring a PWM signal of the to-be-detected piece and sending the PWM signal to the processor; the processor is used for determining electrical parameter values of the to-be-detected part according to the electrical parameter data; the processor is also used for analyzing the message information and determining the communication state of the to-be-detected piece; the processor is further used for determining the frequency and the duty ratio of the PWM signal according to the PWM signal. On the basis, the universality of vehicle part detection is improved.

Description

Technical Field

[0001] The present application belongs to the field of vehicle parts testing, and in particular, relates to a portable vehicle parts function tester. Background Art

[0002] With the rapid development of the vehicle industry, different car companies are launching new models at an increasingly faster speed. In order to adapt to the speed of new model development, the development speed of corresponding vehicle parts is also accelerating. The vehicle parts development cycle has been continuously shortened. Problems in the development or production process of vehicle parts can be discovered and solved in a timely manner, which can greatly shorten the development cycle.

[0003] However, there are many different parts in a vehicle, and the testing instruments for each part are not the same. Each testing instrument is customized according to the characteristics of the part. One instrument is only suitable for one part and is not universal. Utility Model Content

[0004] The embodiment of the present application provides a portable vehicle component function tester, which improves the universality of vehicle component testing.

[0005] According to a first aspect of the present application, an embodiment of the present application provides a portable vehicle component function tester, which includes:

[0006] An electrical parameter detection module, the electrical parameter detection module is electrically connected to the processor and the part to be detected, and the electrical parameter detection module is used to obtain electrical parameter data of the part to be detected and send the electrical parameter data to the processor;

[0007] A communication detection module, the communication detection module is electrically connected to the processor and the part to be detected, and the communication detection module is used to obtain message information of the part to be detected and send the message information to the processor;

[0008] A PWM signal detection module, the PWM signal detection module is electrically connected to the processor and the part to be detected, and the PWM signal detection module is used to obtain the PWM signal of the part to be detected and send the PWM signal to the processor;

[0009] The processor is used to determine the electrical parameter value of the component to be detected based on the electrical parameter data; the processor is also used to parse the message information to determine the communication status of the component to be detected; the processor is also used to determine the frequency and duty cycle of the PWM signal based on the PWM signal.

[0010] Optionally, the electrical parameter detection module includes:

[0011] Voltage detection module, the voltage detection module includes:

[0012] A first voltage-dividing circuit, wherein an input end of the first voltage-dividing circuit is connected in parallel with the component to be detected;

[0013] A voltage acquisition chip, wherein the input end of the voltage acquisition chip is connected in series with the output end of the first voltage divider circuit, and the output end of the voltage acquisition chip is electrically connected to the processor.

[0014] Optionally, the electrical parameter detection module further includes:

[0015] Current detection module, the current detection module includes:

[0016] A sampling circuit, wherein an input end of the sampling circuit is connected in series with the device to be detected;

[0017] A current acquisition chip, wherein an input end of the current acquisition chip is electrically connected to an output end of the sampling circuit, and an output end of the current acquisition chip is electrically connected to a processor.

[0018] Optionally, the communication detection module includes:

[0019] A CAN transceiver, wherein an input end of the CAN transceiver is electrically connected to a CAN communication module of the component to be detected, and an output end of the CAN transceiver is electrically connected to a processor;

[0020] A LIN transceiver, an output end of the LIN transceiver is electrically connected to a LIN communication module of a to-be-detected component, and an output end of the LIN transceiver is electrically connected to a processor.

[0021] Optionally, the PWM signal detection module includes:

[0022] A second voltage divider circuit, wherein an input end of the second voltage divider circuit is electrically connected to the component to be detected, and an output end of the second voltage divider circuit is electrically connected to the processor.

[0023] Optionally, the portable vehicle component function tester further comprises:

[0024] A power output module, the output end of which is electrically connected to the component to be detected, and is used to provide power supply to the component to be detected;

[0025] The processor is also electrically connected to the power output module for controlling the output voltage value of the power supply, and when a short circuit fault or an open circuit fault occurs in the power output module, the processor is also used to control the power output module to stop providing power supply to the component to be detected.

[0026] Optionally, the power output module further includes:

[0027] A first voltage level circuit, wherein an output end of the first voltage level circuit is connected to a component to be detected through a first fuse;

[0028] A second voltage level circuit, wherein an output end of the second voltage level circuit is connected to the component to be detected through a second fuse;

[0029] The processor is also electrically connected to the first voltage level circuit and the second voltage level circuit respectively, and is used to control the working states of the first voltage level circuit and the second voltage level circuit respectively;

[0030] The first voltage level circuit is a boost circuit, and the second voltage level circuit is a buck circuit.

[0031] Optionally, the portable vehicle component function tester further comprises:

[0032] A power supply module, wherein the output end of the power supply module is electrically connected to the electrical parameter detection module, the communication detection module, the PWM signal detection module and the processor respectively, and is used to supply power to the electrical parameter detection module, the communication detection module, the PWM signal detection module and the processor.

[0033] Optionally, the power supply module further includes:

[0034] A power storage unit, wherein the output end of the power storage unit is electrically connected to the electric parameter detection module, the communication detection module, the PWM signal detection module and the processor respectively;

[0035] A charging connector, the output end of the charging connector is electrically connected to the input end of the power storage unit, and the input end of the charging connector is used to connect to an external power source to supply power to the power storage unit.

[0036] Optionally, it is characterized in that the portable vehicle component function tester further comprises:

[0037] A human-computer interaction module includes a human-computer interaction chip and a display screen. The output end of the processor is connected to the input end of the human-computer interaction chip, and the output end of the human-computer interaction chip is connected to the input end of the display screen. The human-computer interaction chip is used to convert the data format of the detection data sent by the processor and send the converted detection data to the display screen so that the display screen displays the converted display data. The detection data includes: at least one of electrical parameter data and message information.

[0038] The portable vehicle component function tester of the embodiment of the present application, the present application acquires parameters of the component to be detected by setting an electrical parameter detection module, a communication detection module and a PWM signal detection module in the portable vehicle component function tester, thereby sending the acquired electrical parameter data, message information and PWM signal to the processor, and the processor processes the electrical parameter data, message information and PWM signal respectively, thereby obtaining the electrical parameter value, communication status and frequency and duty cycle of the component to be detected, thereby realizing the detection of the component to be detected. Based on this, by integrating a variety of detection modules in the portable vehicle component function tester, it is no longer necessary to use a variety of different detection instruments to perform multiple tests on the component to be detected, thereby improving the universality of vehicle component detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] Figure 1 is a structural connection diagram of a portable vehicle component function tester according to an exemplary embodiment;

[0041] Figure 2 The present invention is an overall structural diagram of a portable vehicle component function tester according to an exemplary embodiment.

[0042] Description of Figure Numbers

[0043] Label name Label name 1 Portable vehicle component function tester 31 The second voltage divider circuit 10 Electrical parameter detection module 40 processor 11 Voltage detection module 50 Power output module 111 The first voltage divider circuit 51 First voltage level circuit 112 Voltage acquisition chip 52 Second voltage level circuit 12 Current sensing module 60 Power supply module 121 Sampling circuit 61 Power storage unit 122 Current acquisition chip 62 Charging connector 20 Communication detection module 70 Human-computer interaction module 21 CAN transceiver 71 Human-computer interaction chip 22 LIN transceiver 72 Display 30 PWM signal detection module DETAILED DESCRIPTION

[0044] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-otherwise inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0046] As described in the background technology section, there are many different kinds of parts in vehicles in the prior art, and the detection instruments for each part are not the same. Each detection instrument is customized according to the characteristics of the part. One instrument is only suitable for one part and is not universal.

[0047] In order to solve the problems of the prior art, the present application integrates multiple detection modules into a portable vehicle component functional tester, so that multiple tests can be performed on the test parts without the need for multiple different detection instruments, thereby improving the universality of vehicle component detection.

[0048] Based on this, the present application provides a portable vehicle component function tester. The portable vehicle component function tester provided in the embodiment of the present application is introduced below.

[0049] Figure 1 The structure connection diagram of a portable vehicle component function tester provided by an embodiment of the present application is shown. Figure 1 As shown, the portable vehicle component function tester 1 may include:

[0050] An electrical parameter detection module 10, which is electrically connected to the processor 40 and the part to be detected, and is used to obtain electrical parameter data of the part to be detected and send the electrical parameter data to the processor 40;

[0051] The communication detection module 20 is electrically connected to the processor 40 and the part to be detected, and is used to obtain the message information of the part to be detected and send the message information to the processor 40;

[0052] A PWM signal detection module, the PWM signal detection module is electrically connected to the processor 40 and the part to be detected, and the PWM signal detection module is used to obtain the PWM signal of the part to be detected and send the PWM signal to the processor 40;

[0053] Processor 40, processor 40 is used to determine the electrical parameter value of the component to be detected based on the electrical parameter data; processor 40 is also used to parse message information to determine the communication status of the component to be detected; processor 40 is also used to determine the frequency and duty cycle of the PWM signal based on the PWM signal.

[0054] As an example, the electrical parameter detection module 10 is a module for detecting electrical parameters in the part to be detected, where the electrical parameters may include: current, voltage, resistance, and reactance, etc.; by electrically connecting the electrical parameter detection module 10 to the part to be detected, the electrical parameter data of the part to be detected can be obtained, and by connecting the electrical parameter detection module 10 to the processor 40, the obtained electrical parameter data can be sent to the processor 40 for further processing.

[0055] As an example, the communication detection module 20 can receive the message information transmitted in the detected component by connecting with the detected component; for example, the detected component sets the fault alarm message as 1 according to the communication protocol, and then the communication detection module 20 is connected with the detected component to obtain the message information of the fault message 1. In addition, the communication detection module 20 can be connected with the processor 40 to send the message information to the processor 40 for further processing.

[0056] As an example, PWM signals can be used to control and adjust parameters of various electronic devices, such as motor speed, heater temperature, LED brightness, etc. By detecting the duty cycle of the PWM signal, the current state of the part to be detected can be understood, so as to accurately control and adjust it. The PWM signal detection module can be connected to the part to be detected to obtain the PWM signal of the part to be detected, and by connecting the PWM signal detection module to the processor 40, the PWM signal can be sent to the processor 40 for further processing.

[0057] As an example, the processor 40 may obtain the electrical parameter data, or message information, or PWM signal transmitted by the electrical parameter detection module 10 .

[0058] For the electrical parameter data, the processor 40 calculates the corresponding electrical parameter value according to the electrical parameter data. For example, the electrical parameter data may be the charge. By detecting the charge flow of the detected component in unit time, the current value is obtained.

[0059] For the message information, after acquiring the message information, the processor 40 parses the message information according to a preset communication protocol to determine the communication status of the component to be detected, for example, by parsing the message information, it is determined that the component to be detected is in a faulty communication status.

[0060] For a PWM signal, after obtaining the PWM signal, the frequency and duty cycle of the current PWM signal are calculated.

[0061] Based on the above embodiment, the electrical parameter detection module 10, the communication detection module 20 and the PWM signal detection module are set in the portable vehicle component function tester 1 to obtain the parameters of the component to be detected, thereby sending the obtained electrical parameter data, message information and PWM signal to the processor 40, and the processor 40 processes the electrical parameter data, message information and PWM signal respectively, so as to obtain the electrical parameter value, communication status and frequency and duty cycle of the PWM signal of the component to be detected, thereby realizing the detection of the component to be detected. Based on this, by integrating multiple detection modules in the portable vehicle component function tester 1, multiple tests can be performed on the component to be detected without using multiple different detection instruments, thereby improving the universality of vehicle component detection.

[0062] Figure 2 The overall structure of a portable vehicle component function tester provided by an embodiment of the present application is shown. Figure 2 As shown, in one embodiment, the electrical parameter detection module 10 includes:

[0063] The voltage detection module 11 includes:

[0064] A first voltage divider circuit 111, wherein an input end of the first voltage divider circuit 111 is connected in parallel with the component to be detected;

[0065] The voltage collection chip 112 has an input end connected in series with an output end of the first voltage divider circuit 111 , and an output end of the voltage collection chip 112 is electrically connected to the processor 40 .

[0066] The electrical parameter detection module 10 may include a voltage detection module 11, and the voltage detection module 11 is used to detect the voltage of the component to be detected.

[0067] Based on the above embodiment, the voltage detection module 11 may include: a first voltage divider circuit 111 and a voltage acquisition chip 112, wherein the input and output ends of the first voltage divider circuit 111 are connected in parallel with the component to be detected, the input end of the voltage acquisition chip 112 is connected in series with the output end of the first voltage divider circuit 111, and the output end of the voltage acquisition chip 112 is electrically connected to the processor 40.

[0068] The first voltage divider circuit 111 is connected in parallel with the device to be detected to reduce the voltage amplitude of the device to be detected, so that the voltage of the device to be detected can meet the rated voltage of the voltage acquisition chip 112, so that the voltage acquisition chip 112 can detect normally, and then the reduced voltage is transmitted to the voltage acquisition chip 112. The acquisition chip may contain an amplifier, a filter and other necessary circuits to ensure that the voltage parameter data collected by the voltage acquisition chip 112 is accurate and reliable. The voltage acquisition chip 112 transmits the collected voltage data to the central processor 40.

[0069] Therefore, by providing the first voltage divider circuit 111 and the voltage acquisition chip 112 to detect the component to be detected, the accuracy of the voltage detected by the portable vehicle component function tester 1 is ensured.

[0070] In one embodiment, the electrical parameter detection module 10 further includes:

[0071] The current detection module 12 includes:

[0072] A sampling circuit 121, wherein an input end of the sampling circuit 121 is connected in series with the component to be detected;

[0073] The current acquisition chip 122 has an input terminal electrically connected to an output terminal of the sampling circuit 121 , and an output terminal of the current acquisition chip 122 electrically connected to the processor 40 .

[0074] The electrical parameter detection module 10 may include a current detection module 12 for detecting current.

[0075] Based on the above embodiment, the current detection module 12 may include: a sampling circuit 121 and a current acquisition chip 122, wherein the sampling circuit 121 may be a sampling circuit, the sampling circuit 121 and the to-be-detected component are connected in series, the input end of the current acquisition chip 122 is electrically connected to the output end of the sampling circuit 121, and the output end of the acquisition chip is connected to the processor 40. Thus, the to-be-detected component and the sampling circuit 121 can be connected in series through a wiring harness, when current passes through the wiring harness, a voltage drop will occur across the sampling resistor in the sampling circuit 121, the current acquisition chip 122 will collect the voltage across the sampling resistor, calculate the voltage difference across the sampling resistor, and then upload the voltage difference to the processor 40, after receiving the voltage difference, the processor 40 divides the voltage difference by the resistance value of the sampling resistor to calculate the current current.

[0076] Therefore, by providing the sampling circuit 121 and the current acquisition chip 122 to detect the component to be detected, the accuracy of the current detection by the portable vehicle component function tester 1 is ensured.

[0077] In one embodiment, the communication detection module 20 includes:

[0078] A CAN transceiver, wherein an input end of the CAN transceiver is electrically connected to a CAN communication module of the component to be detected, and an output end of the CAN transceiver is electrically connected to a processor 40;

[0079] LIN transceiver, the output end of the LIN transceiver is electrically connected to the LIN communication module of the component to be detected, and the output end of the LIN transceiver is electrically connected to the processor 40.

[0080] Based on the above implementation, the communication detection module 20 may include a CAN transceiver and a LIN transceiver, and the part to be detected includes a CAN communication module and a LIN communication module. The input and output ends of the CAN transceiver and the input end of the LIN transceiver are electrically connected to the CAN communication module and the LIN communication module of the part to be detected through a wiring harness; wherein, during the detection process, the terminal resistance of the CAN communication module can be set to 120 ohms, 60 ohms or infinity through the central processor 40, and the LIN communication module can also be set to a master node or a slave node through the central processor 40. These configurations are all for adapting the CAN transceiver and the LIN transceiver to the CAN / LIN communication module of the part to be detected. The CAN transceiver / LIN transceiver is connected to the CAN / LIN communication module on the part to be detected to achieve communication with the part to be detected, so that data exchange can be performed to obtain the message information of the current part to be detected.

[0081] As an example, a CAN transceiver is a dedicated chip for CAN bus communication, which is mainly used to convert and adjust signals between a CAN controller and a CAN bus physical layer. Its main function is to convert the digital signal output by the CAN controller into the physical signal required by the CAN bus, and to convert the physical signal received on the CAN bus into a digital signal, and pass it to the processor 40 for processing.

[0082] As an example, a LIN transceiver is a dedicated chip for LIN bus communication, which is mainly used to convert and adjust signals between a LIN controller and the physical layer of the LIN bus. The LIN bus is a low-cost serial communication network used in automobiles, mainly used to connect devices such as sensors and actuators in automobiles. The main functions of the LIN transceiver include converting the digital signal output by the LIN controller into the analog signal required by the LIN bus, and converting the analog signal received on the LIN bus into a digital signal, and passing it to the processor 40 for processing.

[0083] Based on this, by setting up a CAN transceiver and a LIN transceiver, the connection with the CAN bus and the LIN bus on the part to be tested is achieved, and the detection of the CAN bus communication status and the LIN bus communication status is achieved, thereby improving the universality of the portable vehicle parts functional tester 1 for vehicle parts detection.

[0084] In one embodiment, the PWM signal detection module includes:

[0085] The second voltage divider circuit 31 has an input end electrically connected to the component to be detected, and an output end electrically connected to the processor 40 .

[0086] Based on the above embodiment, by setting the second voltage divider circuit 31 in the PWM signal detection module and electrically connecting the second voltage divider circuit 31 to the part to be detected, the PWM signal is reduced to an input range suitable for processing by the processor 40. This step is necessary because different devices or chips may have different requirements for input voltage. In this way, the PWM signal can be normally transmitted to the processor 40 through the second voltage divider circuit 31, and then the processor 40 processes the PWM signal.

[0087] Based on this, by setting up the second voltage divider circuit 31, the possibility that the processor 40 cannot detect the PWM signal is reduced, which is conducive to the accurate detection of the PWM signal by the processor 40, so that the portable vehicle component functional tester 1 can achieve accurate measurement of the PWM signal, thereby improving the detection accuracy of the portable vehicle component functional tester 1.

[0088] In one embodiment, the portable vehicle component function tester 1 further includes:

[0089] A power output module 50, the output end of which is electrically connected to the component to be detected, and is used to provide power supply to the component to be detected;

[0090] The processor 40 is also electrically connected to the power output module 50 for controlling the output voltage value of the power supply, and when a short circuit fault or an open circuit fault occurs in the power output module 50, the processor 40 is also used to control the power output module 50 to stop providing power supply to the part to be detected.

[0091] Based on the above embodiment, by setting a power output module 50 and electrically connecting the power output module 50 to the part to be tested, the power supply module 60 in the portable vehicle component functional tester 1 can be used to power the part to be tested in the absence of an external power supply, so that the part to be tested can still operate normally, which facilitates the testing of the part to be tested by the portable vehicle component functional tester 1, thereby improving the testing applicability of the portable vehicle component functional tester 1.

[0092] Furthermore, since the operating voltages of different components to be tested may be different, the processor 40 can also be connected to the power output module 50, and the processor 40 controls the output voltage value of the power supply provided by the power output module 50, thereby ensuring that the component to be tested can operate normally under the required voltage.

[0093] Furthermore, during the process of the power output module 50 supplying power to the part to be detected, the processor 40 can also monitor the power supply status of the power output module 50. Once the power output module 50 fails such as a short circuit or an open circuit, the processor 40 will control the power output module 50 to stop providing power to the part to be detected to ensure the safety of the part to be detected.

[0094] In one embodiment, the power output module 50 further includes:

[0095] A first voltage level circuit 51, wherein an output end of the first voltage level circuit 51 is connected to a component to be detected through a first fuse;

[0096] A second voltage level circuit 52, wherein an output end of the second voltage level circuit 52 is connected to the component to be detected through a second fuse;

[0097] The processor 40 is also electrically connected to the first voltage level circuit 51 and the second voltage level circuit 52, respectively, for controlling the working states of the first voltage level circuit 51 and the second voltage level circuit 52, respectively;

[0098] The first voltage level circuit 51 is a boost circuit, and the second voltage level circuit 52 is a buck circuit.

[0099] Based on the above embodiments, in order to be suitable for different working voltages of the device to be detected, the power output module 50 may include a first voltage level circuit 51 of a first voltage level and a second voltage level circuit 52 of a second voltage level. Thus, through circuits of different voltage levels, the power output module 50 can output voltages of different levels, and on the lines between the first voltage level circuit 51, the second voltage level circuit 52 and the device to be detected, a first fuse and a second fuse are respectively connected in series. The series fuses can effectively protect the connection lines between the voltage level circuits and the device to be detected. When the current is too large, the fuse will blow, thereby forming a short circuit, thereby effectively protecting the device to be detected.

[0100] Optionally, the first voltage level circuit 51 is a boost circuit, which can enable the power output module 50 to output a high voltage.

[0101] Optionally, the second voltage level circuit 52 is a step-down circuit, which can enable the power output module 50 to output a low voltage.

[0102] Optionally, according to the different voltage levels of the components to be detected, more voltage level circuits with different voltage levels can be set, so that the power output module 50 can be applicable to components to be detected with more voltage levels.

[0103] Optionally, the models and specifications of the fuses connected in series between the circuits of each voltage level and the components to be detected may be different, and the specific models and specifications shall be based on actual needs.

[0104] As an example, an air switch may be connected in series between each voltage level circuit and the component to be detected to perform circuit protection.

[0105] In one embodiment, the portable vehicle component function tester 1 further includes:

[0106] The power supply module 60, the output end of the power supply module 60 is electrically connected to the electrical parameter detection module 10, the communication detection module 20, the PWM signal detection module and the processor 40, respectively, for supplying power to the electrical parameter detection module 10, the communication detection module 20, the PWM signal detection module and the processor 40.

[0107] Based on the above embodiment, a power supply module 60 capable of self-powering is provided on the portable vehicle component functional tester 1, and the output end of the power supply module 60 is electrically connected to the electrical parameter detection module 10, the communication detection module 20, the PWM signal detection module and the processor 40, respectively, so as to supply power to the electrical parameter detection module 10, the communication detection module 20, the PWM signal detection module and the processor 40. By making the portable vehicle component functional tester 1 directly usable without an external power supply, the convenience of use of the portable vehicle component functional tester 1 is improved.

[0108] In one embodiment, the power supply module 60 further includes:

[0109] The power storage unit 61, the output end of the power storage unit 61 is electrically connected to the electric parameter detection module 10, the communication detection module 20, the PWM signal detection module and the processor 40 respectively;

[0110] A charging connector 62 , the output end of which is electrically connected to the input end of the power storage unit 61 , and the input end of the charging connector 62 is used to be connected to an external power source to supply power to the power storage unit 61 .

[0111] Based on the above embodiment, by providing a power storage unit 61 and a charging connector 62 connected to the input end of the power storage unit 61, an external power source can charge the power storage unit 61 through the charging connector 62, so that the power storage unit 61 can be used repeatedly, reducing the use cost of the portable vehicle component function tester 1 and improving the practicality of the portable vehicle component function tester 1. It should be noted that the portable vehicle component function tester 1 can still be used normally during the charging process.

[0112] As an example, the power storage unit 61 is 4 18650 batteries, each of which has a rated voltage of 3.6V. The total voltage of the 4 batteries connected in series is 14.4V. The rated voltages of the various functional modules that need to be powered may be different. Therefore, a step-down circuit needs to be connected in series between the power storage unit 61 and the electrical parameter detection module 10, the communication detection module 20, the PWM signal detection module and the processor 40, so as to reduce the voltage of the power storage unit 61 to the rated voltage required by each module.

[0113] For the four 18650 batteries, the power storage unit 61 may also include a battery box for accommodating each battery, and the battery box is detachably connected to the charging connector 62 and the housing of the portable vehicle component functional tester 1 to facilitate the overall removal of each battery.

[0114] As an example, the power supply module 60 also includes a battery management chip. During the charging process of the storage unit 61, the battery management chip monitors the charging power supply current and voltage. When the storage unit 61 is fully charged, the charging management chip will automatically cut off the charging circuit to protect the safety of the storage unit 61 and extend the service life of the storage unit 61. The charging management chip can also upload the current charging status and usage status of the storage unit 61 to the processor 40. The processor 40 communicates with the human-computer interaction chip 71 in the human-computer interaction module 70 to display the current charging status on the display screen 72.

[0115] As an example, the power storage unit 61 may also be connected to the power output module 50 to supply power to the power output module 50 so that the power output module 50 can supply power to the component to be detected.

[0116] In one embodiment, the portable vehicle component function tester 1 further includes:

[0117] The human-machine interaction module 70 includes a human-machine interaction chip 71 and a display screen 72. The output end of the processor 40 is connected to the input end of the human-machine interaction chip 71, and the output end of the human-machine interaction chip 71 is connected to the input end of the display screen 72. The human-machine interaction chip 71 is used to convert the data format of the detection data sent by the processor, and send the converted detection data to the display screen 72 so that the display screen 72 displays the converted display data. The detection data includes: at least one of electrical parameter data and message information.

[0118] Based on the above embodiment, by setting up a human-computer interaction module 70 to be connected to the processor 40, the results of the processing of each data by the processor 40 can be informed to the detection personnel through the human-computer interaction module 70, and the detection personnel can also control the processor 40 through the human-computer interaction module 70, thereby controlling the detection status of each detection module, etc.

[0119] As an example, the human-computer interaction module 70 may include: a human-computer interaction chip 71 and a display screen 72. The output end of the processor 40 is connected to the input end of the human-computer interaction chip 71, and the output end of the human-computer interaction chip 71 is connected to the input and output ends of the display screen 72. The human-computer interaction chip converts various detection data in processing into display data suitable for the display screen 72, and sends the display data to the display screen 72. After receiving the display data, the display screen 72 can directly display it on the display screen 72. The user informs the detection personnel of the various parameter data of the parts to be detected, so that the acquisition of various detection data can be completed without the need for professionals, thereby greatly improving the detection efficiency.

[0120] In addition, function controls may be provided on the display screen 72. The inspector may send control instructions by operating the function controls. The display screen 72 may send the control instructions to the processor 40 through the human-computer interaction chip 71 so that the processor 40 controls each detection module.

[0121] As an example, the detection data includes: electrical parameter data, message information, and operation data of each module.

[0122] As an example, the power supply module 60 may also supply power to the human-computer interaction module 70 .

[0123] In one embodiment, the portable vehicle component function tester 1 has an appearance of 150 mm in length, 105 mm in width, and 30 mm in height. After the power storage unit 61 is installed, its weight does not exceed 350 g.

[0124] Seen from the front, the area of ​​the portable vehicle component functional tester 1 is about half the size of an A4 paper. The compact design allows the inspector to hold the portable vehicle component functional tester 1 with one hand and complete touch operations with the other hand.

[0125] In addition, the portable vehicle component function tester 1 is also provided with a support bracket for supporting the portable vehicle component function tester 1. When it is inconvenient for the tester to operate with both hands, the support bracket on the back of the tester can be opened and the tester can be placed on the desktop, thus freeing the operator's hands.

[0126] Based on this, the portable vehicle component function tester 1 is small in size, light in weight, and easy to operate, and is suitable for various types of products and various testing scenarios, thereby improving the applicability and practicality of the portable vehicle component function tester 1.

[0127] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A portable vehicle parts function tester, characterized in that: The functional tester comprises: An electrical parameter detection module, the electrical parameter detection module is electrically connected to the processor and the part to be detected, and the electrical parameter detection module is used to obtain electrical parameter data of the part to be detected and send the electrical parameter data to the processor; A communication detection module, the communication detection module is electrically connected to the processor and the part to be detected, and the communication detection module is used to obtain message information of the part to be detected and send the message information to the processor; A PWM signal detection module, the PWM signal detection module is electrically connected to the processor and the part to be detected, and the PWM signal detection module is used to obtain the PWM signal of the part to be detected and send the PWM signal to the processor; A processor, the processor is used to determine the electrical parameter value of the component to be detected based on the electrical parameter data; the processor is also used to parse the message information to determine the communication status of the component to be detected; the processor is also used to determine the frequency and duty cycle of the PWM signal based on the PWM signal.

2. The portable vehicle component function tester according to claim 1, characterized in that: The electrical parameter detection module comprises: A voltage detection module, the voltage detection module comprising: A first voltage-dividing circuit, wherein an input end of the first voltage-dividing circuit is connected in parallel with the component to be detected; A voltage acquisition chip, wherein an input end of the voltage acquisition chip is connected in series with an output end of the first voltage divider circuit, and an output end of the voltage acquisition chip is electrically connected to the processor.

3. The portable vehicle component function tester according to claim 1, characterized in that: The electrical parameter detection module also includes: A current detection module, the current detection module comprising: A sampling circuit, wherein an input end of the sampling circuit is connected in series with the component to be detected; A current acquisition chip, wherein an input end of the current acquisition chip is electrically connected to an output end of the sampling circuit, and an output end of the current acquisition chip is electrically connected to the processor.

4. The portable vehicle component function tester according to claim 1, characterized in that: The communication detection module comprises: A CAN transceiver, wherein an input end of the CAN transceiver is electrically connected to a CAN communication module of the component to be detected, and an output end of the CAN transceiver is electrically connected to the processor; A LIN transceiver, wherein the output end of the LIN transceiver is electrically connected to the LIN communication module of the component to be detected, and the output end of the LIN transceiver is electrically connected to the processor.

5. The portable vehicle component function tester according to claim 1, characterized in that: The PWM signal detection module comprises: A second voltage-dividing circuit, wherein an input end of the second voltage-dividing circuit is electrically connected to the component to be detected, and an output end of the second voltage-dividing circuit is electrically connected to the processor.

6. The portable vehicle component function tester according to claim 1, characterized in that: The portable vehicle component function tester also includes: A power output module, the output end of which is electrically connected to the component to be detected, and is used to provide power supply to the component to be detected; The processor is also electrically connected to the power output module for controlling the output voltage value of the power supply, and when a short circuit fault or an open circuit fault occurs in the power output module, the processor is also used to control the power output module to stop providing power supply to the component to be detected.

7. The portable vehicle component function tester according to claim 6, characterized in that: The power output module also includes: A first voltage level circuit, wherein an output end of the first voltage level circuit is connected to the component to be detected through a first fuse; A second voltage level circuit, wherein an output end of the second voltage level circuit is connected to the component to be detected through a second fuse; The processor is also electrically connected to the first voltage level circuit and the second voltage level circuit, respectively, for controlling the working states of the first voltage level circuit and the second voltage level circuit, respectively; The first voltage level circuit is a boost circuit, and the second voltage level circuit is a buck circuit.

8. The portable vehicle component function tester according to claim 1, characterized in that: The portable vehicle component function tester also includes: A power supply module, wherein the output end of the power supply module is electrically connected to the electrical parameter detection module, the communication detection module, the PWM signal detection module and the processor, respectively, for supplying power to the electrical parameter detection module, the communication detection module, the PWM signal detection module and the processor.

9. The portable vehicle component function tester according to claim 8, characterized in that: The power supply module also includes: A power storage unit, wherein the output end of the power storage unit is electrically connected to the electrical parameter detection module, the communication detection module, the PWM signal detection module and the processor respectively; A charging connector, the output end of which is electrically connected to the input end of the power storage unit, and the input end of the charging connector is used to be connected to an external power source to supply power to the power storage unit.

10. The portable vehicle component function tester according to any one of claims 1 to 9, characterized in that: The portable vehicle component function tester also includes: A human-computer interaction module, wherein the human-computer interaction module comprises a human-computer interaction chip and a display screen, wherein the output end of the processor is connected to the input end of the human-computer interaction chip, and the output end of the human-computer interaction chip is connected to the input end of the display screen.

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