CN212061507U - Car OBD interface fault diagnosis training set based on PLC - Google Patents
Car OBD interface fault diagnosis training set based on PLC Download PDFInfo
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- CN212061507U CN212061507U CN202020969791.XU CN202020969791U CN212061507U CN 212061507 U CN212061507 U CN 212061507U CN 202020969791 U CN202020969791 U CN 202020969791U CN 212061507 U CN212061507 U CN 212061507U
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Abstract
The utility model relates to a car OBD interface failure diagnosis training set based on PLC, including the device main part, the device main part left side is passed through the connecting wire and is linked to each other with the public bayonet connector of OBD, the public bayonet connector of OBD can directly be pegged graft on the OBD diagnosis interface of car, the right side is provided with the female bayonet connector of OBD, the female bayonet connector of OBD can connect car failure diagnosis appearance, PLC touch-sensitive screen all-in-one is installed on device panel upper portion in the device main part, measuring terminal, inside the device main part, the fault setting board is installed to device panel below, the signal terminal of fault setting board is connected with the measuring terminal on the device panel. The set and diagnosis of multiple faults of the OBD interface are realized by adopting the PLC touch screen integrated machine and the measuring terminal, fault points and fault reasons are analyzed and judged by measuring voltage, resistance, waveform and the like, and the analysis and diagnosis capabilities of students on grounding, power supply and network communication faults corresponding to the OBD diagnosis interface of the automobile are greatly improved.
Description
Technical Field
The utility model belongs to real equipment field of instructing of car vocational education experiment relates to a car OBD interface fault diagnosis training set based on PLC.
Background
The automobile OBD interface is a connection interface for communicating the automobile fault diagnosis instrument with an automobile-mounted computer, CAN provide a direct current constant voltage with a rated voltage of 12V according to international standards, and is provided with a CAN network interface for communicating with the diagnosis instrument and other communication lines. Under such automobile technical background, the relevant automobile professions set up in numerous vocational colleges and universities in China all need to teach the corresponding knowledge of OBD interface communication, but do not have corresponding experimental training equipment in the market, need operate at former car OBD interface during experimental training, and this interface is more hidden, is not convenient for operate, also is not convenient for carry out fault simulation and diagnosis such as circuit break, short circuit, bonding, frequent operation can cause destruction to former car socket and pencil.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a car OBD interface fault diagnosis training set based on PLC has solved the real standard equipment of automobile experiment and can't realize the real standard problem of the experiment of opening circuit, short circuit fault simulation and diagnosis of the corresponding pencil of OBD diagnosis interface, and this utility model can realize the harmless butt joint of the device and vehicle OBD interface, does not break the line, and it is convenient to connect, and the loss is little.
The technical scheme adopted by the utility model is that the fault diagnosis training device for the OBD interface of the automobile based on the PLC comprises a device main body, wherein the left side of the device main body is connected with an OBD male connector through a connecting wire, and the OBD male connector can be directly connected to the OBD diagnosis interface of the automobile; the device main part right side is provided with the female connector of OBD, and the female connector of OBD can connect automobile failure diagnosis appearance, installs the device panel in the device main part, and PLC touch-sensitive screen all-in-one is installed on device panel upper portion, and sixteen measuring terminals are installed to device panel lower part, installs the trouble and sets up the board inside the device main part, device panel below, and the signal terminal of trouble setting board is connected with sixteen measuring terminals on the device panel.
The utility model is also characterized in that,
the measuring terminal is connected on the fault setting board, also connects simultaneously on the female connector of OBD, and sixteen measuring terminals are used for measuring the parameter value of each pencil.
The PLC touch screen all-in-one machine is used as a man-machine interaction tool and also used as a controller for setting and clearing faults.
The signal terminal input end of the fault setting plate is connected to an OBD diagnosis seat at the vehicle end through a connecting wire and an OBD male connector; the signal terminal output end of the fault setting plate is connected to a measuring terminal on the device panel; the vehicle end ground terminal of the fault setting plate is connected with the ground wire of the OBD male plug.
The fault setting board is mainly composed of a fault setting relay, and the fault setting relay is a six-wire relay.
The PLC touch screen all-in-one machine is connected to a control terminal of the fault setting board, a control instruction can be sent to a PLC controller inside the PLC touch screen all-in-one machine through the touch screen, and the PLC controller sends the control instruction to control corresponding relays on the fault setting board to act so as to achieve circuit breaking, short circuit or bonding of a circuit.
The beneficial effects of the utility model are that, the utility model discloses a car OBD interface failure diagnosis training set based on PLC has adopted PLC touch-sensitive screen all-in-one and safe and reliable's detection terminal, the setting and the diagnosis of the multiple trouble of OBD interface have been realized, this scheme can with the direct butt joint of car OBD diagnosis interface, do not destroy former car pencil, and on the device, the student can freely set up the trouble through the touch-sensitive screen, and is easy and convenient to operate, man-machine interaction is friendly, through measuring voltage, resistance, mode analysis such as wave form judges fault point and fault cause on the device panel, the fault point is abundant, the training is comprehensive, can promote the ground connection that the student corresponds to car OBD diagnosis interface by a wide margin, the power supply, the analysis and diagnosis ability of network communication trouble, also can regard as the examination platform of training teacher to this part of student's skill degree of mastering simultaneously.
Drawings
Fig. 1 is a schematic structural view of the vehicle OBD interface fault diagnosis training device based on PLC of the present invention;
fig. 2 is an electrical schematic block diagram of the vehicle OBD interface fault diagnosis training device based on PLC of the present invention;
fig. 3 is a circuit schematic diagram of a fault setting board of the vehicle OBD interface fault diagnosis training device based on PLC of the present invention;
in the figure, 1, an OBD male connector, 2, a connecting wire, 3, a measuring terminal, 4, a fault setting plate, 5, a device panel, 6, a PLC controller and a touch screen, 7, an OBD female connector, 8, a control terminal, 9, a fault setting relay, 10, a signal terminal and 11, a vehicle end grounding terminal.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model discloses a PLC-based automobile OBD interface fault diagnosis training device structure is shown in figure 1, and comprises a device main body 12, wherein the left side of the device main body 12 is connected with an OBD male connector 1 through a connecting wire 2, and the OBD male connector 1 can be directly connected to an OBD diagnosis interface of an automobile; the right side of the device main body 12 is provided with an OBD female plug-in connector 7, the OBD female plug-in connector 7 can be connected with an automobile fault diagnosis instrument, the device main body 12 is provided with a device panel 5, the upper portion of the device panel 5 is provided with a PLC touch screen integrated machine 6, sixteen measuring terminals 3 are installed on the lower portion of the device panel 5, a fault setting plate 4 is installed inside the device main body 12 and below the device panel 5, and signal terminals 10 of the fault setting plate 4 are connected with the sixteen measuring terminals on the device panel 5.
The measuring terminals 3 are connected to the fault setting plate 4 and also connected to the OBD female plug-in connector 7, and the sixteen measuring terminals 3 are used for measuring parameter values of each wire harness.
The PLC touch screen all-in-one machine 6 is used as a man-machine interaction tool and also used as a controller for setting and clearing faults.
The signal terminal input end of the fault setting plate 4 is connected to an OBD diagnosis seat at the vehicle end through a connecting wire 2 and an OBD male connector 1; the signal terminal output end of the fault setting plate 4 is connected to a measurement terminal on the device panel 5; the vehicle-end ground terminal 11 of the fault setting plate 4 is connected to the ground line of the OBD male plug 1.
The fault setting board 4 is mainly composed of a fault setting relay 9, and the fault setting relay 9 is a six-wire relay.
The PLC touch screen integrated machine 6 is connected to a control terminal 8 of the fault setting board 4, a control instruction can be sent to a PLC controller inside the PLC touch screen integrated machine through the touch screen, and the PLC controller sends the control instruction to control corresponding relays on the fault setting board to act so as to achieve circuit breaking, short circuit or bonding of a circuit.
As shown in fig. 1 and 2, the OBD male plug 1 is connected to the device body 12 by a connection cord 2. Because the OBD interface of car can provide 12V ordinary electricity, consequently when connecting the OBD interface on the car with OBD public bayonet 1, the touch-sensitive screen of PLC touch-sensitive screen all-in-one 6 can start, and this training set can get into operating condition, and simultaneously, trouble sets up board 4 and supplies the power, also gets into operating condition.
As shown in fig. 1, 2 and 3, the PLC touch screen integrated machine 6 is connected to the fault setting board 4 through the control terminal 8, and the operator can press a corresponding function button on the PLC touch screen integrated machine 6, and the PLC touch screen integrated machine 6 sends a control instruction to control a corresponding fault setting relay 9 on the fault setting board 4 to act, so that the number of the fault setting boards 4 can be increased according to the number of fault points required to be set by the device.
As shown in fig. 1 and 2, 16 measurement terminals 3 are connected to 16 terminals of the OBD female plug 7 in sequence from top to bottom and from left to right, a harness of the OBD female plug 7 is also connected to an output side of a signal terminal 10 on the failure setting plate 4 inside the device main body 12, and the OBD male plug 1 is connected to an input side of the signal terminal 10 on the failure setting plate 4 inside the device main body 12 through a connection wire 2.
A specific operation method of an automobile OBD interface fault diagnosis training device based on a PLC is as follows:
the OBD male connector 1 is in butt joint with the vehicle end OBD diagnosis interface, the vehicle end OBD diagnosis interface supplies power, and the fault diagnosis training device can be powered on and turned on to enter a working state.
An operator touches a fault point setting button designed on the PLC touch screen integrated machine 6, a control signal is sent to the fault equipment board 4, and a corresponding fault on the fault equipment board 4 sets the action of the relay 9, so that the open circuit, the short circuit or the bonding of an automobile OBD circuit are realized.
The trainee can firstly compare the relevant circuit diagram of the automobile in the state that the automobile is not powered on, and measure the voltage, the resistance or the waveform of the corresponding line on the measuring terminal 3.
The student turns on the ignition switch of the automobile, compares the automobile-related circuit diagram, measures the voltage and waveform of the corresponding line on the measuring terminal 3, analyzes possible fault points according to data, and finally analyzes and judges the fault reason.
The trainee can also turn on the ignition switch of the automobile, connect the automobile fault diagnosis instrument on the OBD female plug-in connector 7, read the fault code and data stream of the automobile, or set and match the function of the automobile, etc.
The device can be connected to a training automobile without frequent plugging.
Claims (6)
1. The vehicle OBD interface fault diagnosis training device based on the PLC is characterized by comprising a device main body (12), wherein the left side of the device main body (12) is connected with an OBD male connector (1) through a connecting wire (2), and the OBD male connector (1) can be directly connected to an OBD diagnosis interface of a vehicle in an inserted mode; device main part (12) right side is provided with the female connector (7) of OBD, automobile failure diagnosis appearance can be connected in the female connector (7) of OBD, install device panel (5) on device main part (12), PLC touch-sensitive screen all-in-one (6) are installed on device panel (5) upper portion, sixteen measuring terminal (3) are installed to device panel (5) lower part failure setting board (4) are installed to inside, device panel (5) below in device main part (12), signal terminal (10) and the sixteen measuring terminal on device panel (5) of failure setting board (4) are connected.
2. The PLC-based vehicle OBD interface fault diagnosis training device according to claim 1, wherein the measuring terminals (3) are connected to the fault setting board (4) and also connected to the OBD female plug connector (7), and sixteen measuring terminals (3) are used for measuring parameter values of each wiring harness.
3. The PLC-based vehicle OBD interface fault diagnosis and training device as claimed in claim 1, wherein the PLC touch screen all-in-one machine (6) is used as a man-machine interaction tool and also used as a fault setting and clearing controller.
4. The PLC-based vehicle OBD interface fault diagnosis training device is characterized in that the signal terminal input end of the fault setting plate (4) is connected to an OBD diagnosis seat at a vehicle end through a connecting wire (2) and an OBD male plug-in connector (1); the signal terminal output end of the fault setting plate (4) is connected to a measuring terminal on the device panel (5); and the vehicle end grounding terminal (11) of the fault setting plate (4) is connected with the grounding wire of the OBD male connector (1).
5. The PLC-based vehicle OBD interface fault diagnosis training device according to claim 1, wherein the fault setting board (4) is mainly composed of a fault setting relay (9), and the fault setting relay (9) is a six-wire relay.
6. The PLC-based vehicle OBD interface fault diagnosis training device according to claim 5, wherein the PLC touch screen all-in-one machine (6) is connected to a control terminal (8) of the fault setting board (4), a control command can be sent to a PLC controller inside the PLC touch screen all-in-one machine through the touch screen, and the PLC controller sends the control command to control corresponding relays on the fault setting board to act so as to achieve circuit breaking, short circuit or bonding.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020969791.XU CN212061507U (en) | 2020-06-01 | 2020-06-01 | Car OBD interface fault diagnosis training set based on PLC |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020969791.XU CN212061507U (en) | 2020-06-01 | 2020-06-01 | Car OBD interface fault diagnosis training set based on PLC |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114399934A (en) * | 2022-01-21 | 2022-04-26 | 武汉番天印科技有限公司 | Automobile engine and automobile body electrical appliance diagnosis experimental device |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114399934A (en) * | 2022-01-21 | 2022-04-26 | 武汉番天印科技有限公司 | Automobile engine and automobile body electrical appliance diagnosis experimental device |
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