CN216412484U - On-vehicle OBD teaching system - Google Patents

On-vehicle OBD teaching system Download PDF

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Publication number
CN216412484U
CN216412484U CN202122423631.2U CN202122423631U CN216412484U CN 216412484 U CN216412484 U CN 216412484U CN 202122423631 U CN202122423631 U CN 202122423631U CN 216412484 U CN216412484 U CN 216412484U
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China
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electrically connected
obd
module
control module
lower computer
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CN202122423631.2U
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Chinese (zh)
Inventor
陈少伟
潘梦鹞
王�锋
郇锐铁
何哲宇
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Guangdong College of Industry and Commerce
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Guangdong College of Industry and Commerce
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Abstract

The utility model relates to the field of automobile education experiment training equipment and discloses a vehicle-mounted OBD teaching system. The vehicle-mounted intelligent monitoring system comprises an OBD measuring terminal, a multi-path voltage display module, a multi-path waveform display module, an OBD male socket, a lower computer control module and a vehicle information display module. The OBD measuring port is reserved, students can conveniently learn the operation method of connecting the universal meter or the oscilloscope, various voltage and waveform signals corresponding to the automobile OBD self-diagnosis system can be directly displayed by matching with the multi-path voltage display module and the multi-path waveform display module respectively, so that the students can judge whether the connection of the students with the universal meter or the oscilloscope is wrong, the fact that an external tool is required to be connected to measure and read the voltage or waveform signals every time is avoided, and the voltage and waveform reading efficiency is improved; and the communication with an automobile OBD self-diagnosis system is realized, so that signals such as VIN codes, fault codes and basic data stream can be read, and meanwhile, the signals can be displayed on a vehicle display module.

Description

On-vehicle OBD teaching system
Technical Field
The utility model relates to the field of automobile education experiment training equipment, in particular to a vehicle-mounted OBD teaching system.
Background
Each vehicle has an OBD (On Board Diagnostics) interface, which is required by international ISO standards, because OBD is generated from the origin to solve the problem of monitoring vehicle emissions, and OBD supports many communication protocols, mainly including common standard protocols and vendor proprietary protocols, wherein common standard protocols, that is, ISO standard protocols, mainly solve the problem of transmitting vehicle emissions data. The vendor proprietary protocol is mainly a vendor self-defined protocol, and is a technical means for maintaining the benefits of after-sale services of vendors. With the development of automobiles, the application range of OBD is wider and wider, an OBD teaching system is developed, and the OBD teaching system has important requirements and significance for both OBD developers to study and research OBD technology and teachers and students in schools to carry out OBD technology teaching, however, the existing OBD teaching system does not display information of each signal of the OBD interface in real time, such as information of a power signal and a communication signal, and requires a student to use instruments such as a multimeter, an oscilloscope and the like to perform measurement and display, which finally causes the student to be inconvenient to learn and know the working process of the OBD, the teaching efficiency is reduced, in addition, the OBD work information screen projection function is not synchronously realized on a teacher machine and a student machine in real time, the practical teaching is not convenient to be carried out, and simultaneously, when carrying out signal connection to OBD teaching system and car, cause the unable line mouth cooperation of realizing fast and connect because of the not enough influence of ambient light easily, also influence teaching efficiency.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a vehicle-mounted OBD teaching system which can read and display automobile fault signals and improve teaching efficiency.
The vehicle-mounted OBD teaching system comprises an OBD measuring terminal, a multi-path voltage display module, a multi-path waveform display module, an OBD male socket, a lower computer control module and a vehicle information display module; the multi-path voltage display module, the multi-path waveform display module and the OBD male socket are respectively electrically connected with the OBD measuring terminal; the lower computer control module is electrically connected with the OBD male socket; the vehicle information display module is electrically connected with the lower computer control module.
The vehicle-mounted OBD teaching system provided by the embodiment of the utility model at least has the following beneficial effects:
the OBD measuring port is reserved, students can conveniently learn the operation method of connecting the universal meter or the oscilloscope, various voltage and waveform signals corresponding to the automobile OBD self-diagnosis system can be directly displayed by matching with the multi-path voltage display module and the multi-path waveform display module respectively, so that the students can judge whether the own universal meter or the oscilloscope is connected wrongly, external tools are prevented from being required to be connected to measure and read the voltage or waveform signals every time, and the voltage and waveform reading efficiency is improved;
utilize the public first socket of lower computer control module and OBD can realize communicating with car OBD self-diagnostic system, and then can read VIN sign indicating number, read the fault code, clear the fault code and gather signals such as basic data flow, can utilize direct display on the vehicle display module simultaneously.
According to some embodiments of the utility model, the OBD connector further comprises an OBD female socket, the OBD female socket being electrically connected to the OBD male socket.
According to some embodiments of the utility model, the lower computer control module comprises an ECU control unit and a communication unit, the ECU control unit is electrically connected with the vehicle information display module; the communication unit is used for being in communication connection with external equipment, and the communication unit is electrically connected with the ECU control unit.
According to some embodiments of the present invention, the mobile terminal further comprises a key control module, and the key control module is electrically connected to the lower computer control module.
According to some embodiments of the present invention, the key control module includes at least one current-limiting resistor and at least one switch key, a first end of each current-limiting resistor is electrically connected to a power supply VDD, a second end of each current-limiting resistor is electrically connected to a first end of the corresponding switch key, the first end of each switch key is electrically connected to an input end of the corresponding lower computer control module, and the second end of each switch key is grounded.
According to some embodiments of the utility model, the current limiting resistor and the switch key are respectively provided with four; the four current-limiting resistors respectively comprise a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4, a first end of the first resistor R1 is electrically connected with the power supply VDD, and a second end of the first resistor R1 is electrically connected with a first input end of the lower computer control module; a first end of the second resistor R2 is electrically connected to the power supply VDD, and a second end is electrically connected to a second input end of the lower computer control module; a first end of the third resistor R3 is electrically connected to the power supply VDD, and a second end of the third resistor R3 is electrically connected to a third input end of the lower computer control module; a first end of the fourth resistor R4 is electrically connected to the power supply VDD, and a second end of the fourth resistor R4 is electrically connected to a fourth input end of the lower computer control module; the four switch keys respectively comprise a first switch key K1, a second switch key K2, a third switch key K3 and a fourth switch key K4; a first end of the first switch key K1 is electrically connected to the first input end of the lower computer control module, and a second end of the first switch key K1 is grounded; a first end of the second switch key K2 is electrically connected to the second input end of the lower computer control module, and a second end of the second switch key K2 is grounded; a first end of the third switch key K3 is electrically connected to the third input end of the lower computer control module, and a second end of the third switch key K3 is grounded; a first end of the fourth switch key K4 is electrically connected to the fourth input end of the lower computer control module, and a second end of the fourth switch key K4 is grounded.
According to some embodiments of the utility model, further comprising a lighting device comprising an energy storage circuit module, a first LED lamp module, a second LED lamp module, a first control switch, and a second control switch; the first LED lamp module is arranged on the periphery of the OBD male socket; the second LED lamp module is arranged on the periphery of the OBD measuring terminal; the first control switch is electrically connected between the energy storage circuit module and the first LED lamp module; the second control switch is electrically connected between the energy storage circuit module and the second LED lamp module.
According to some embodiments of the utility model, the lighting device further comprises an OBD female socket electrically connected to the OBD male socket, the lighting device further comprises a third LED lamp module and a third control switch, the OBD female socket is electrically connected to the OBD male socket; the third LED lamp module is arranged on the periphery of the OBD female socket; the third control switch is electrically connected between the energy storage circuit module and the third LED lamp module.
According to some embodiments of the utility model, the tank circuit module comprises a rectifying unit and an energy storage unit; the input end of the rectifying unit is electrically connected with the mains supply; the input end of the energy storage unit is electrically connected with the rectifying unit, and the output end of the energy storage unit is electrically connected with the first control switch and the second control switch respectively.
According to some embodiments of the utility model, the energy storage unit comprises a voltage regulator tube ZD1, a capacitor C2 and a resistor R7, a cathode of the voltage regulator tube ZD1 is electrically connected with an output end of the rectifying unit, an anode of the voltage regulator tube ZD1 is grounded, the capacitor C2 is connected in parallel to two ends of the voltage regulator tube ZD1, one end of the resistor R7 is electrically connected with a cathode of the voltage regulator tube ZD1, and the other end of the resistor R7 is electrically connected with the first control switch and the second control switch respectively.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of the circuit principles of an on-board OBD teaching system of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the electrical circuit principles of an on-board OBD teaching system of another embodiment of the present invention;
FIG. 3 is a schematic structural diagram of circuit connection of a key control module of the on-board OBD teaching system shown in FIG. 1;
fig. 4 is a schematic diagram of the circuit principle of the lighting device of the on-board OBD teaching system according to the embodiment of the present invention;
FIG. 5 is a schematic structural diagram of circuit connection of a key control module of the on-board OBD teaching system shown in FIG. 4;
fig. 6 is a schematic diagram of the circuit principle of the lighting device of the on-board OBD teaching system according to the embodiment of the present invention;
fig. 7 is a schematic structural diagram of circuit connection of a key control module of the on-board OBD teaching system shown in fig. 6.
Reference numerals: the system comprises an OBD measuring terminal 100, a multi-path voltage display module 200, a multi-path waveform display module 300, an OBD male socket 400, a lower computer control module 500, an ECU control unit 510, a communication unit 520, a vehicle information display module 600, an OBD female socket 700, a key control module 800, a lighting device 900, an energy storage circuit module 910, a rectifying unit 911, an energy storage unit 912, a first LED lamp module 920, a second LED lamp module 930, a third LED lamp module 940, a first control switch 950, a second control switch 960 and a third control switch 970.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. The description of first, second, etc. if any, is for the purpose of distinguishing between technical features and not intended to indicate or imply relative importance or implicitly indicate a number of indicated technical features or implicitly indicate a precedence relationship of indicated technical features.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1, the on-board OBD teaching system according to the embodiment of the present invention includes an OBD measuring terminal 100, a multi-path voltage display module 200, a multi-path waveform display module 300, an OBD male socket 400, a lower computer control module 500, and a vehicle information display module 600; the multi-path voltage display module 200, the multi-path waveform display module 300 and the OBD male socket 400 are electrically connected with the OBD measuring terminal 100 respectively; the lower computer control module 500 is electrically connected with the OBD male socket 400; the vehicle information display module 600 is electrically connected to the lower computer control module 500.
The multi-path voltage display module 200 adopts circuit hardware of conventional voltage detection to be matched with a nixie tube or a display screen to display a corresponding measured voltage value, and is provided with a multi-path measuring end to simultaneously display the multi-path voltage value of the OBD measuring terminal 100, and similarly, the multi-path waveform display module 300 also adopts circuit hardware of a conventional oscilloscope to be matched with the display screen to display a corresponding waveform signal; meanwhile, an OBD measuring port is reserved, so that students can conveniently learn the operation method of connecting a universal meter or an oscilloscope, and whether the self measuring connection mode is correct or not is judged according to the values and waveforms displayed by the multi-path voltage display module 200 and the multi-path waveform display module 300, so that the detection efficiency and the teaching efficiency are improved; in this embodiment, the OBD measurement port adopts a 16-pin mode, and can output various OBD signals outwards through the OBD measurement port, and meanwhile, can be connected with corresponding external devices, such as a multimeter, an oscilloscope, a multi-path voltage display module 200, a multi-path waveform display module 300 and the like, to obtain various OBD signals through the OBD external pin, so as to finally realize fault elimination, signal detection, signal learning, signal research and OBD working process research and learning; the OBD male socket 400 is mainly used for being connected with hardware of an automobile OBD self-diagnosis system, one end of an OBD connecting line is matched with the OBD female socket 700 of a vehicle, and the other end of the OBD connecting line is connected with the OBD male socket 400, so that the hardware connection of the on-board OBD teaching system and the automobile OBD self-diagnosis system can be realized; the lower computer control module 500 is mainly used for communicating with the automobile OBD self-diagnosis system through the OBD male socket 400 and an OBD connecting line, and after the connection is completed, an operator can communicate with the automobile OBD self-diagnosis system through the lower computer control module 500, so that VIN code reading, fault code clearing and basic data stream information acquisition are realized. And displays the VIN codes, fault codes, and data stream on the vehicle information display module 600.
Referring to fig. 2, in some embodiments of the present invention, an OBD female socket 700 is further included, and the OBD female socket 700 is electrically connected to the OBD male socket 400. The OBD female socket 700 is connected to the OBD male socket 400 by a line on the circuit board. The OBD female socket 700 is mainly used for connecting other external devices, such as a diagnostic apparatus, or other OBD external devices, and the external OBD device is connected to the OBD male socket 400 through the OBD female socket 700, and finally connected to the OBD self-diagnosis system of the vehicle through an OBD connecting line, so as to electrically connect the external device and the OBD self-diagnosis system of the vehicle.
In some embodiments of the present invention, the lower computer control module 500 includes an ECU control unit 510 and a communication unit 520, wherein the ECU control unit 510 is electrically connected to the vehicle information display module 600; the communication unit 520 is used for realizing communication connection with external equipment, and the communication unit 520 is electrically connected with the ECU control unit 510. By using the communication unit 520, the ECU control unit 510 can perform data interaction with the teacher-side software platform and the student-side software platform, and finally realize the functions of the teacher-side software platform and the student-side software platform. It should be noted that the teacher-side software platform and the student-side software platform are implemented by conventional control software, and may cooperate with the lower computer control module 500 to read the OBD signals, and at the same time, may issue commands to the teacher-side software platform and the student-side software platform, and transmit the commands to the automobile OBD self-diagnosis system through the ECU control unit 510, so as to implement control of the automobile OBD self-diagnosis system. Wherein, the Electronic Control Unit (Electronic Control Unit) adopted by the ECU Control Unit 510 is composed of a Microcontroller (MCU), a memory (ROM, RAM), an input/output interface (I/O), an analog-to-digital converter (a/D), a shaping, a driving and other large scale integrated circuits, and the communication Unit (520) can adopt a common cable communication structure or be matched with a conventional wireless communication structure, such as at least one of a WIFI Unit, a bluetooth Unit, an FM Unit or a GPS Unit, since the wireless transmission mode of signals is a signal transmission means well known by those skilled in the art, the description is not expanded herein, so the communication Unit (520) can be matched with other terminals, such as a computer or a mobile phone for communication connection, and the lower computer Control module (500) can be directly controlled on the computer or mobile phone by being matched with corresponding conventional development software, meanwhile, the collection of various OBD signals can be realized through the lower computer control module 500, and then the OBD signals are displayed on a computer or a mobile phone, so that the convenience can be further improved.
Referring to fig. 2, in some embodiments of the utility model, the lower computer control module 500 further includes a key control module 800, and the key control module 800 is electrically connected to the lower computer control module 800. The key control module 800 may be directly electrically connected to the lower computer control module 500 to issue an instruction, so as to control the lower computer control module 500 to read the VIN code, read the fault code, clear the fault code or collect corresponding signals of the basic data stream and the like from the automobile OBD self-diagnosis system.
Referring to fig. 3, in some embodiments of the present invention, the key control module 800 includes at least one current-limiting resistor and at least one switch key, a first terminal of each current-limiting resistor is electrically connected to the power VDD, a second terminal of each current-limiting resistor is electrically connected to a first terminal of the corresponding switch key, a first terminal of each switch key is electrically connected to an input terminal of the corresponding lower computer control module 500, and a second terminal of each switch key is grounded. It should be noted that, according to the control requirement of the automobile OBD self-diagnosis system, a corresponding number of switch keys may be provided, and the lower computer control module 500 may control the automobile OBD self-diagnosis system.
Referring to fig. 3, in some embodiments of the present invention, four current limiting resistors and four switch buttons are respectively disposed; the four current-limiting resistors respectively comprise a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4, a first end of the first resistor R1 is electrically connected with a power supply VDD, and a second end of the first resistor R1 is electrically connected with a first input end of the lower computer control module 500; a first end of the second resistor R2 is electrically connected to the power supply VDD, and a second end is electrically connected to a second input end of the lower computer control module 500; a first end of the third resistor R3 is electrically connected to the power supply VDD, and a second end of the third resistor R3 is electrically connected to a third input end of the lower computer control module 500; a first end of the fourth resistor R4 is electrically connected to the power supply VDD, and a second end of the fourth resistor R4 is electrically connected to a fourth input end of the lower computer control module 500; the four switch keys respectively comprise a first switch key K1, a second switch key K2, a third switch key K3 and a fourth switch key K4; a first end of the first switch key K1 is electrically connected to a first input end of the lower computer control module 500, and a second end of the first switch key K1 is grounded; a first end of the second switch key K2 is electrically connected to a second input end of the lower computer control module 500, and a second end of the second switch key K2 is grounded; a first end of the third switch key K3 is electrically connected to the third input end of the lower computer control module 500, and a second end of the third switch key K3 is grounded; a first end of the fourth switch key K4 is electrically connected to the fourth input end of the lower computer control module 500, and a second end of the fourth switch key K4 is grounded. In this embodiment, mainly for implementing four operations of reading the VIN code, reading the fault code, clearing the fault code and acquiring the basic data stream for the automobile OBD self-diagnosis system, the first switch key K1, the second switch key K2, the third switch key K3 and the fourth switch key K4 are respectively configured to correspondingly read the VIN code, read the fault code, clear the fault code and acquire the basic data stream, and the lower computer control module 500 can execute a corresponding instruction according to the read switch key signal, so as to respectively execute corresponding actions of reading the VIN code, reading the fault code, clearing the fault code and acquiring the basic data stream. The structure of the key switch is adopted, so that the efficiency of identifying the position of the key by an operator can be improved.
Referring to fig. 4 and 5, in some embodiments of the present invention, a lighting device 900 is further included, the lighting device 900 including a tank circuit module 910, a first LED lamp module 920, a second LED lamp module 930, a first control switch 950, and a second control switch 960; the first LED lamp module 920 is disposed around the OBD male socket 400; the second LED lamp module 930 is disposed around the OBD measuring terminal 100; the first control switch 950 is electrically connected between the energy storage circuit module 910 and the first LED lamp module 920; the second control switch 960 is electrically connected between the energy storage circuit module 910 and the second LED lamp module 930. Under the relatively poor condition of ambient light, then can utilize lighting device 900 to provide interim light source, owing to adopt energy storage circuit module 910, under the condition of not having connected power, also can realize interim illumination to operating personnel discerns the position of corresponding interface, so that the line connection of OBD public first socket 400 and OBD measuring terminal 100 has further promoted the convenience, cooperation first control switch 950 and second control switch 960 then can control first LED lamp module 920 or second LED lamp module 930. It should be noted that the energy storage circuit module 910 is provided with an input connection port, and can be electrically connected to the mains supply, and after the energy storage circuit module 910 consumes the electric energy, the energy storage circuit module can be supplied with the mains supply to store the charged energy.
Referring to fig. 5, in some embodiments of the present invention, the tank circuit module 910 includes a rectifying unit 911 and an energy storage unit 912; the input end of the rectifying unit 911 is electrically connected to the mains; the input end of the energy storage unit 912 is electrically connected to the rectifying unit 911, and the output end of the energy storage unit 912 is electrically connected to the first control switch 950 and the second control switch 960, respectively. The rectifying unit 911 may convert ac power into dc power and store the electric power in the energy storage unit 912, so as to provide a stable operating voltage for the LED lamp module, and thus the LED lamp module may stably operate.
Referring to fig. 5, the rectifying unit 911 includes a resistor R5, a resistor R6, a capacitor C1, and a rectifying bridge DB1, wherein one end of the resistor R5 is connected to the utility power as an input port, the other end of the resistor R5 is electrically connected to the first ac terminal of the rectifying bridge DB1 through the capacitor C1, the second ac terminal of the rectifying bridge DB1 is electrically connected to the utility power as an input port, and the positive terminal of the rectifying bridge DB1 is electrically connected to the first switching element. The rectifier bridge DB1 can convert alternating voltage into direct current working voltage of the LED lamp module, the capacitor C1 is a current-limiting capacitor, the resistor R6 is used as a bleeder resistor of the capacitor C1, and the resistor R5 and the capacitor C1 are connected in series and can be used for preventing surge current during electrification and preventing damage of a rear connecting circuit.
Referring to fig. 5, in some embodiments of the present invention, the energy storage unit 912 includes a voltage regulator ZD1, a capacitor C2, and a resistor R7, a cathode of the voltage regulator ZD1 is electrically connected to an output terminal of the rectifying unit 911, an anode of the voltage regulator ZD1 is grounded, the capacitor C2 is connected in parallel to two ends of the voltage regulator ZD1, one end of the resistor R7 is electrically connected to a cathode of the voltage regulator ZD1, and the other end of the resistor R7 is electrically connected to the first control switch 950 and the second control switch 960, respectively. The capacitor C2 is used as an energy storage capacitor, so that effective electric energy can be stored, and the effective electric energy can be provided for the LED lamp module; the voltage regulator tube ZD1 can limit the voltage of the energy storage unit 912 within a rated value, prevent the relevant modules of the circuit from being damaged by electric shock, and improve the stability of the circuit assembly; resistor R7 is a current limiting resistor that limits the operating current to the LED lamp module to prevent large currents from damaging the LED lamp module. The capacitor C2 is a farad capacitor, the positive terminal of the capacitor C2 is electrically connected with the cathode of the voltage regulator tube ZD1, and the negative terminal of the capacitor C2 is grounded. Adopt farad capacitance, can realize the accumulate effect of bigger capacity, not only guarantee first LED lamp module 920's energy supply demand, can prolong first LED lamp module 920's operating time effectively simultaneously.
Referring to fig. 6 and 7, in some embodiments of the present invention, the lighting device 900 further comprises a third LED lamp module 940 and a third control switch 970, the OBD female socket 700 being electrically connected with the OBD male socket 400; the third LED lamp module 940 is disposed around the OBD female socket 700; the third control switch 970 is electrically connected between the energy storage circuit module 910 and the third LED lamp module 940. The cooperation third LED lamp then can throw light on to the female first socket 700 of OBD temporarily, and the operating personnel of being convenient for discerns the position of the female first socket 700 of OBD and the direction of line mouth.
It is noted that, in some embodiments of the present invention, the first LED lamp module 920, the second LED lamp module 930, and the third LED lamp module 940 may be directly controlled by the same control switch, that is, the first LED lamp module 920, the second LED lamp module 930, and the third LED lamp module 940 implement synchronous on/off actions. It is conceivable that the first LED lamp module 920, the second LED lamp module 930, or the third LED lamp module 940 may be a structure including at least one LED lamp, or a structure including at least two LED lamps connected in series or in parallel, or a structure including at least two LED lamps connected in series and/or in parallel. The corresponding LED lamp is laid around the OBD measuring terminal 100, the OBD male socket 400 or the OBD female socket 700.
The first control switch 950, the second control switch 960 and the third control switch 970 can be touch switches and/or single control switches, and the touch switches can be used for enabling an operator to light the corresponding LED lamp module by only lightly touching the switches when the operator prepares to connect a corresponding socket or terminal, and the convenience is improved by releasing the hands after the LED lamp module is aligned and inserted; if the single-control switch is adopted, when the single-control switch is pressed down, the corresponding LED lamp module can be kept in a continuously-on state, and the single-control switch is clicked again, so that the corresponding LED lamp module can pause working, and therefore, the socket can be illuminated and the position of the slotted hole can be checked by adopting the single-control switch, and the LED lamp module can be used as a light source for temporary illumination when the power is off, and the applicability of the LED lamp module is expanded.
The vehicle-mounted OBD teaching system provided by the embodiment of the utility model at least has the following beneficial effects:
the OBD measuring port is reserved, students can conveniently learn the operation method of connecting the universal meter or the oscilloscope, various voltage and waveform signals corresponding to the automobile OBD self-diagnosis system can be directly displayed by matching with the multi-path voltage display module 200 and the multi-path waveform display module 300, so that the students can judge whether the connection of the students with the universal meter or the oscilloscope is wrong, the connection of an external tool for measuring and reading the voltage or waveform signals every time is avoided, and the voltage and waveform reading efficiency is improved;
utilize the public first socket 400 of lower computer control module 500 and OBD can realize communicating with car OBD self-diagnosis system, and then can read VIN sign indicating number, read the fault code, clear the fault code and gather signals such as basic data stream, can utilize direct display on the vehicle display module simultaneously.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An on-vehicle OBD teaching system, comprising:
an OBD measurement terminal;
the multi-path voltage display module is electrically connected with the OBD measuring terminal;
the multi-path waveform display module is electrically connected with the OBD measuring terminal;
the OBD male socket is electrically connected with the OBD measuring terminal;
the lower computer control module is electrically connected with the OBD male socket;
and the vehicle information display module is electrically connected with the lower computer control module.
2. The on-board OBD teaching system of claim 1 further comprising an OBD female socket electrically connected to the OBD male socket.
3. The on-board OBD teaching system of claim 1 wherein the lower computer control module comprises:
the ECU control unit is electrically connected with the vehicle information display module;
and the communication unit is used for being in communication connection with external equipment and is electrically connected with the ECU control unit.
4. The on-board OBD teaching system of claim 1, further comprising a key control module electrically connected to the lower computer control module.
5. The on-vehicle OBD teaching system of claim 4, wherein the key control module comprises at least one current-limiting resistor and at least one switch key, a first end of each current-limiting resistor is electrically connected to a power supply VDD, a second end of each current-limiting resistor is electrically connected to a corresponding first end of the switch key, a first end of each switch key is electrically connected to a corresponding input end of the lower computer control module, and a second end of each switch key is grounded.
6. The on-board OBD teaching system of claim 5, wherein: the number of the current-limiting resistors and the number of the switch keys are four respectively;
the four current limiting resistors respectively include:
a first resistor R1, a first end of which is electrically connected to the power supply VDD, and a second end of which is electrically connected to the first input end of the lower computer control module;
a second resistor R2, a first end of which is electrically connected to the power supply VDD, and a second end of which is electrically connected to a second input end of the lower computer control module;
a third resistor R3, a first end of which is electrically connected to the power supply VDD, and a second end of which is electrically connected to a third input end of the lower computer control module;
a fourth resistor R4, a first end of which is electrically connected to the power supply VDD, and a second end of which is electrically connected to a fourth input end of the lower computer control module;
the four switch keys respectively comprise:
a first switch key K1, a first end of which is electrically connected to the first input end of the lower computer control module, and a second end of which is grounded;
a second switch key K2, a first end of which is electrically connected to the second input end of the lower computer control module, and a second end of which is grounded;
a third switch key K3, a first end of which is electrically connected to the third input end of the lower computer control module and a second end of which is grounded;
and a fourth switch key K4, a first end of which is electrically connected to the fourth input end of the lower computer control module, and a second end of which is grounded.
7. The on-board OBD teaching system of claim 1 further comprising an illumination device, the illumination device comprising:
an energy storage circuit module;
the first LED lamp module is arranged on the periphery of the OBD male socket;
the second LED lamp module is arranged at the periphery of the OBD measuring terminal;
the first control switch is electrically connected between the energy storage circuit module and the first LED lamp module;
and the second control switch is electrically connected between the energy storage circuit module and the second LED lamp module.
8. The on-board OBD teaching system of claim 7 further comprising an OBD female socket electrically connected to the OBD male socket, the lighting device further comprising:
the third LED lamp module is arranged on the periphery of the OBD female socket;
and the third control switch is electrically connected between the energy storage circuit module and the third LED lamp module.
9. The on-board OBD teaching system of claim 7 wherein the tank circuit module comprises:
the input end of the rectification unit is electrically connected with the mains supply;
the input end of the energy storage unit is electrically connected with the rectifying unit, and the output end of the energy storage unit is electrically connected with the first control switch and the second control switch respectively.
10. The vehicle-mounted OBD teaching system according to claim 9, wherein the energy storage unit comprises a voltage regulator ZD1, a capacitor C2 and a resistor R7, a cathode of the voltage regulator ZD1 is electrically connected with an output end of the rectifying unit, an anode of the voltage regulator ZD1 is grounded, the capacitor C2 is connected in parallel with two ends of the voltage regulator ZD1, one end of the resistor R7 is electrically connected with a cathode of the voltage regulator ZD1, and the other end of the resistor R7 is electrically connected with the first control switch and the second control switch respectively.
CN202122423631.2U 2021-10-08 2021-10-08 On-vehicle OBD teaching system Active CN216412484U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122423631.2U CN216412484U (en) 2021-10-08 2021-10-08 On-vehicle OBD teaching system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122423631.2U CN216412484U (en) 2021-10-08 2021-10-08 On-vehicle OBD teaching system

Publications (1)

Publication Number Publication Date
CN216412484U true CN216412484U (en) 2022-04-29

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122423631.2U Active CN216412484U (en) 2021-10-08 2021-10-08 On-vehicle OBD teaching system

Country Status (1)

Country Link
CN (1) CN216412484U (en)

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