CN203931291U - Automobile circuit maintenance infrastest device based on fault diagnosis thinking training - Google Patents

Abstract

The basic experimental device for automotive circuit maintenance based on fault diagnosis thinking training, including the experimental system sub-training device, fault setting device, the training device includes a number of automotive electrical components, each component includes an independent circuit connection port and is used to connect each electrical component The circuit is connected to the fault diagnosis port, the two sets of ports are connected in parallel through wires, each end of each component is cut off, and the cut-off end of the component is connected in series with the corresponding fault setting switch; the fault setting device includes multiple fault setting switches, and each fault setting switch Electrically connected analog signal output unit, the fault setting switch is in one-to-one correspondence with each component, and each fault setting switch is connected in series with corresponding components; each fault setting switch is electrically connected with the analog signal output unit. The beneficial effect of the utility model is: the combination of the physical system and the virtual system can provide an experimental demonstration platform for the practical teaching of students and even the training of professional technicians of automobile maintenance.

Description

Basic experimental device for automotive circuit maintenance based on fault diagnosis thinking training

technical field

The invention relates to a basic experimental device for automobile circuit maintenance based on fault diagnosis thinking training.

Background technique

With the development of the automobile industry and its new technologies, it is required that the training of professionals in automobile inspection and maintenance must also undergo corresponding changes. Correspondingly, the requirements for the main vocational basic course "Automotive Electrical and Electronic Technology" of automobile maintenance majors will become more and more demanding. high. At present, the "automotive electrical and electronic technology" course of automobile inspection and maintenance majors in domestic higher vocational colleges basically forms the principle of "necessary and sufficient" in teaching content, and mostly implements a teaching mode integrating theory and practice. It is to combine professional theoretical teaching and practical teaching into one to create a better on-site teaching mode, which is conducive to the improvement of theoretical knowledge and professional skills. In terms of teaching methods, the project teaching method and the situational teaching method are generally adopted, and the relevant theoretical knowledge is integrated with the work task as the core. The study has a good learning carrier, so that the purpose, pertinence and enthusiasm of learning are well improved, and it is very helpful for cultivating students' practical ability and cultivating high-skilled application-oriented professionals. In addition to the traditional blackboard and chalk teaching method, multimedia courseware, simulation software, experimental teaching and other teaching methods are widely used.

However, at present, we have very little equipment for cultivating the idea of automobile circuit fault detection, and the teaching equipment is not targeted enough. The disjointed status quo and lack of talents make it difficult to meet the needs of society. After investigation, it was found that under the principle of "necessary and sufficient", many vocational colleges' automobile inspection and maintenance majors have different emphasis on the teaching content of "automotive electrical and electronic technology", which leads to the fact that some school experiments are still based on verification. Mainly, according to the summary of many years of actual automobile maintenance and teaching experience, the research group believes that cultivating students' "circuit fault detection and diagnosis ability" is the main problem to be solved by "automotive electrical and electronic technology". Theoretical knowledge learning and experimental training should always focus on Therefore, although the teaching methods and supporting experimental facilities of "automotive electrical and electronic technology" have made continuous breakthroughs in form in recent years, such as the use of MULTISIM software and EWB software to establish a simulation teaching platform, the current domestic vocational colleges The automotive circuit basic experimental equipment used by the automotive inspection and maintenance profession has the following problems: First, the experimental items are not well targeted, and there is a lack of training for the core professional ability of the automotive inspection and maintenance electrical category "circuit fault detection and diagnosis ability". Most of them are verification experiments, which have little connection with practical applications. Even the experimental benches used by some vocational colleges are developed according to the requirements of the electronics major of undergraduate colleges. Although this kind of electronic circuit experimental bench has many functions, it is not suitable for automobile The testing profession is not targeted, and the price is relatively high. Secondly, considering teaching cost, efficiency, safety and other factors, some colleges and universities rely on computer simulation software to complete the experimental training. Therefore, the virtual experimental platform cannot completely replace ordinary experimental equipment, but should be a supplement to ordinary experimental equipment. If the three-dimensional experimental mode of "experiment box + simulation software" can be established, the effect of practical training and teaching will be further improved.

Through the investigation and investigation of relevant domestic higher vocational colleges and automobile teaching equipment manufacturers, we have analyzed and studied the status of relevant domestic automobile electrical and electronic experimental equipment. From the perspective of our development, we have developed an automobile circuit maintenance foundation based on "training based on circuit fault detection ideas". "Experimental system", which organically combines the physical system with the virtual system. At present, this kind of circuit-based experimental device has not been reported or used.

Contents of the invention

In order to solve the problem that the physical system and the virtual system are independent of each other in the current teaching process of automobile circuit fault detection, this invention proposes a combination of the physical system and the virtual system, which can be used for the practical teaching of students and even the training of professional technicians for automobile maintenance. A basic experimental system for automotive circuit maintenance based on fault diagnosis thinking training that provides an experimental demonstration platform.

The basic experimental device for automotive circuit maintenance based on fault diagnosis thinking training described in the utility model is characterized in that it includes an experimental system sub-training device and a fault setting device, and the training device includes a plurality of automotive electrical components, each component It includes an independent circuit connection port for measuring circuit connection faults of components and a circuit connection fault diagnosis port for connecting various electrical components. The two sets of ports are connected in parallel through wires, each end of each component is cut off, and the components The cut-off ends of the fault setting device are respectively connected in series with the corresponding fault setting switch in the fault setting device through wires;

Described fault setting device comprises a plurality of fault setting switches for being connected in series with each component and parts in the training device, an analog signal output unit electrically connected with each fault setting switch, and described fault setting switch is connected with the training device of the experimental system Each component corresponds to one by one, and each of the fault setting switches is connected in series with each of the corresponding cut-off components of the training device; the analog signal output unit includes a precision potentiometer, and the precision potentiometer The regulators of the precision potentiometers are respectively connected to the fault switches, and the regulators of the precision potentiometers have three states: normal, disconnected, and short-circuited, and each fault setting switch is electrically connected to the analog signal output unit.

Described experimental system sub-training device, fault setting device are provided with the centralized output device of a plurality of ports respectively, and each described centralized output device includes at least one cable connector that is arranged on the fixed support, and experimental system sub-training The independent circuit connection port of each component in the device is electrically connected to the cable connector of the centralized output device configured in the training device of the experimental system; each fault setting switch in the fault setting device is electrically connected to the cable connector of the centralized output device configured in the fault setting device. connected; and each port of the centralized output device of the experimental system sub-training device is connected with the corresponding port of the centralized output device of the fault setting device.

The sub-training device of the experimental system includes a power supply unit, a basic component unit, a single-pole switch and a lamp unit, a relay and a DC motor unit, a double-pole switch unit, and an integrated circuit unit. The power supply unit, the basic component unit, the single-pole switch and The independent circuit connection ports of the lamp unit, the relay and the DC motor unit, the double-pole switch unit, and the integrated circuit unit are respectively electrically connected with the cable connectors of the centralized output device configured in the training device of the experimental system.

The fault setting device includes a power fault setting unit, a basic element fault setting unit, a single-pole switch and a lamp fault setting unit, a relay and a DC motor fault setting unit, a double-pole switch fault setting unit, and an integrated circuit fault setting unit. The power supply fault setting unit, the basic component fault setting unit, the single-pole switch and lamp fault setting unit, the relay and DC motor fault setting unit, the double-pole switch fault setting unit, and the integrated circuit fault setting unit are respectively equipped with corresponding fault setting switches. The fault setting switches are respectively electrically connected to the cable connectors of the centralized output device configured by the fault setting device.

The centralized output device configured by the training device of the experimental system includes a first cable connector and a second cable connector, and the power supply unit, the basic element unit and the single-pole switch and the lamp unit are connected to the first cable connector, and the the relay is connected to the second cable connector with the DC motor unit, the double pole switch unit and the integrated circuit unit;

The centralized output device of the fault setting device includes a third cable connector and a fourth cable connector, the power supply fault setting unit, the basic element fault setting unit, the single-pole switch and the lamp fault setting unit are connected to the third cable connector, the The relay, the DC motor fault setting unit, the double-pole switch fault setting unit, and the integrated circuit fault setting unit are connected to the fourth cable connector.

Described power supply unit comprises power indication, 12V power control, 12V power supply, 5V power supply control, 5V power supply, fuse, wherein the independent circuit connection port of each component of each power supply unit and the centralized output device of experimental system sub-training device configuration The first cable connector is electrically connected;

The basic element unit includes a sliding variable resistance element, a fixed resistor, a lamp, a triode, a diode, and an electrolytic capacitor. The independent circuit connection ports of each of the basic element units are connected to the first part of the centralized output device configured by the experimental system sub-training device. Cable connector electrical connection;

The single-pole switch and lamp unit include single-pole unit switch K, lamp L, single-pole unit switch K1, lamp L1, single-pole unit switch K2, lamp L2, lamp L3 single-pole unit switch K3, each of the single-pole switch and lamp unit The independent circuit connection port of the experimental system is electrically connected with the first cable connector of the centralized output device configured by the sub-training device of the experimental system;

Described relay and DC motor unit comprise relay J4, relay J2, relay J3, relay J1, deceleration DC motor M1; Each described relay and DC motor unit's independent circuit connection port and the concentration of experimental system sub-training device configuration the second cable connector of the output device is electrically connected;

The double-pole switch unit includes a single-pole three-position switch K1, a single-pole three-position switch K2, and a double-pole two-position switch K3, and the independent circuit connection ports of each of the double-pole switch units are connected to the centralization of the experimental system sub-training device configuration. the second cable connector of the output device is electrically connected;

The integrated circuit unit includes an integrated logic gate control circuit, an integrated operational amplifier control circuit, and an integrated 555 control circuit, and the independent circuit connection port of each integrated circuit unit is connected to the first centralized output device of the experimental system sub-training device configuration. Two cable connectors are electrically connected.

The fault setting switch of the power failure setting unit includes a 12V power failure switch, a 5V power failure switch, a power ground failure switch, and a fuse failure switch, wherein the failure setting switch of each power failure setting unit and the centralized output of the failure setting device configuration The third cable connector of the device is electrically connected;

The fault setting switch of the basic element fault setting unit includes a sliding rheostat element fault switch, a fixed resistance fault switch, a lamp fault switch, a triode fault switch, a diode fault switch, and an electrolytic capacitor fault switch, wherein each basic element fault setting unit The fault setting switch is electrically connected with the third cable connector of the centralized output device configured by the fault setting device;

The fault setting switches of the single-pole switch and lamp fault setting unit include single-pole unit switch K fault setting switch, lamp L fault setting switch, single-pole unit switch K1 fault setting switch, lamp L1 switch K, single-pole unit switch K2 fault setting switch, lamp L2 fault setting switch, single-pole unit switch K3 fault setting switch, lamp L3 fault setting switch, wherein each single-pole switch is electrically connected to the fault setting switch of the lamp fault setting unit and the third cable connector of the centralized output device configured by the fault setting device ;

The fault setting switch of the relay and the DC motor fault setting unit includes a relay J4 fault setting switch, a relay J2 fault setting switch, a relay J3 fault setting switch, a relay J1 fault setting switch, and a deceleration DC motor M1 fault setting switch, wherein each relay It is electrically connected with the fault setting switch of the DC motor fault setting unit and the fourth cable connector of the centralized output device configured by the fault setting device;

The fault setting switch of described double-pole switch fault setting unit comprises single-pole three-position switch K1 fault setting switch, single-pole three-position switch K fault setting switch double-pole double-position switch K3 fault setting switch, wherein each double-pole switch fault setting unit The fault setting switch is electrically connected with the fourth cable connector of the centralized output device configured by the fault setting device;

The fault setting switch of the integrated circuit fault setting unit includes an integrated logic gate control circuit fault setting switch, an integrated operational amplifier control circuit fault setting switch, and an integrated 555 control circuit fault setting switch, wherein the fault setting of each integrated circuit fault setting unit The switch is electrically connected with the fourth cable connector of the centralized output device configured by the fault setting device.

The basic idea of the present invention is: the experimental system can not only perform circuit connection training, but also can perform circuit connection and fault diagnosis training. The system is mainly composed of a training device and a fault setting device. Connection training, when the training device and the fault setting device work together, the circuit connection and fault diagnosis training can be carried out. Specifically, the technical scheme of the present invention is as follows:

According to the fault setting device provided by the present invention, the components of the training device for the experimental system are electrically connected, so that various faults can occur in the components by controlling the connection status of the components. The fault setting device includes a plurality of fault setting switches, and each of the fault setting switches can be connected in series in a component of the training device.

Each component of the training device includes two ports: a independent circuit connection port, b circuit connection and fault diagnosis port, two sets of connection lines a and b are connected in parallel through wires, and the connection line a is inserted in the blank to realize component measurement and circuit Connection, fault detection training. b. Connecting wires only realize the function of circuit connection of electrical components. According to the fault to be simulated and detected, one end of each component of the training device is led to the fault setting device, and a switch corresponding to each component is set in the fault setting device, so that when the switch is activated, the corresponding short circuit, normal, The state of the open circuit, so as to achieve the purpose of simulating the fault. At the same time, the circuit connection can be realized by inserting the connection line a of each component on the training device of the present invention, and various fault detection ports are provided for the students to detect faults.

According to the experimental system provided by the present invention, the training device is composed of multiple types of automotive electrical components, wherein one end of each component can be electrically connected to the fault setting device, and the state of each component is controlled by the fault setting device.

The experimental system provided by the invention includes a training device and a fault setting device. Each end of each component of the training device is severed. The training device includes two ports: an independent circuit connection port, a circuit connection and a fault diagnosis port, and each pair of circuit connection and fault diagnosis ports is connected in series with one fault setting switch; the fault setting device includes a plurality of fault setting switches and A precision potentiometer, each of the fault setting switches is connected in series in each of the cut-off components of the training device.

The beneficial effect of the utility model is that: the combination of the physical system and the virtual system can provide an experimental demonstration platform for the practical teaching of students and even the training of professional technicians of automobile maintenance.

Description of drawings

Fig. 1 is the block diagram of the basic experimental system of automobile circuit maintenance based on fault diagnosis thinking training provided by the present invention, which shows the main components of the system and the connection relationship of each part; the overall structure schematic diagram of the experimental system;

Fig. 2 is the appearance schematic diagram of the experimental system provided by the present invention (5 representative cable; 6 representative box);

3A-3B are circuit block diagrams of the experimental system shown in FIG. 2;

Fig. 4 is a schematic diagram of the connection relationship between each fault switch and each pair of detection holes of the fault setting device shown in Fig. 3A-3B;

Fig. 5A is the name and the position of the elements and ports of each unit of the training device shown in Fig. 3A;

Fig. 6A is the name and the position of the element and the port of each unit of the fault setting device shown in Fig. 3B;

7A is a schematic circuit diagram of the power supply unit, including the circuit connection of this part in the training device and the fault setting device;

7B is a schematic diagram of the basic element unit circuit, including the circuit connection of this part in the training device and the fault setting device;

Fig. 7C is a schematic diagram of the single-pole switch and the lamp unit circuit, including the circuit connection of this part in the training device and the fault setting device;

Fig. 7D is a circuit schematic diagram of the relay and the DC motor unit, including the circuit connection of this part in the training device and the fault setting device;

Fig. 7E is a circuit schematic diagram of a double-pole switch unit, including the circuit connection of this part in the training device and the fault setting device;

7F is a schematic diagram of the integrated logic gate control circuit, including the circuit connection of this part in the training device and the fault setting device;

7G is a schematic diagram of the control circuit of the integrated operational amplifier, including the circuit connection of this part in the training device and the fault setting device;

Figure 7H is a schematic diagram of the integrated 555 control circuit, including the circuit connection of this part in the training device and the fault setting device;

Figure 8A is a characteristic diagram of the power supply unit (a represents the independent circuit connection port, b represents the circuit connection and fault diagnosis port);

Fig. 8B is a characteristic diagram of a basic element unit;

Fig. 8C is a characteristic diagram of a single-pole switch and a lamp unit;

Fig. 8D is a characteristic diagram of a relay and a DC motor unit;

Fig. 8E is a characteristic diagram of a double-pole switch unit;

Fig. 8F is a characteristic diagram of the integrated logic gate control circuit unit;

Fig. 8G is a characteristic diagram of the integrated operational amplifier control circuit unit;

Fig. 8H is a characteristic diagram of the integrated 555 control circuit unit;

Figure 9A is a characteristic diagram of the power failure setting unit

Figure 9B is a characteristic diagram of the basic component failure setting unit

Figure 9C is a characteristic diagram of a single-pole switch and lamp failure setting unit

Figure 9D is a characteristic diagram of relay and DC motor fault setting unit

Figure 9E is a characteristic diagram of the double-pole switch fault setting unit

Fig. 9F is a characteristic diagram of integrated circuit fault setting unit

Figure 10 is a characteristic diagram of the cable connector

Detailed ways

Further illustrate the utility model below in conjunction with accompanying drawing

Referring to the attached picture:

The automobile circuit maintenance basic experimental device based on fault diagnosis thinking training described in the utility model includes an experimental system sub-training device 100 and a fault setting device 200, and the described training device 100 includes a plurality of automotive electrical components, each component includes An independent circuit connection port for measuring circuit connection faults of components and a circuit connection fault diagnosis port for connecting various electrical components, the two sets of ports are connected in parallel through wires, each end of each component is cut off, and the The cut ends are respectively connected in series with the corresponding fault setting switches in the fault setting device through wires;

Described fault setting device 200 comprises a plurality of fault setting switches 1 for being connected in series with each component and parts in the training device, an analog signal output unit 4 electrically connected with each fault setting switch, and described fault setting switch 1 is connected with the experimental system The components and parts of the sub-training device 100 correspond one by one, and each of the fault setting switches 1 is connected in series with each of the corresponding cut-off components of the training device; the analog signal output unit 4 includes a precision potentiometer , the regulator of the precision potentiometer is respectively connected with each of the fault setting switches, the regulator of the precision potentiometer has three states: normal, disconnected, and short circuited, and each fault setting switch 1 is connected to the analog signal output Unit 4 is electrically connected.

The experimental system sub-training device 100 and the fault setting device 200 are respectively equipped with a centralized output device 300 with multiple ports, and each of the centralized output devices 300 includes at least one cable connector arranged on a fixed support, The independent circuit connection port of each component in the experimental system sub-training device 100 is electrically connected with the cable connector of the centralized output device 300 configured by the experimental system sub-training device 100; each fault setting switch in the fault setting device 200 is configured with the fault setting device The cable connector of the centralized output device 300 is electrically connected; and each port of the centralized output device of the experimental system sub-training device 100 is connected with the corresponding port of the centralized output device 300 of the fault setting device 200 .

The described experimental system sub-training device 100 includes a power supply unit 11, a basic element unit 12, a single-pole switch and a lamp unit 13, a relay and a DC motor unit 14, a double-pole switch unit 15, and an integrated circuit unit 16. The power supply unit 11 , basic element unit 12, single-pole switch and lamp unit 13, relay and DC motor unit 14, double-pole switch unit 15, the independent circuit connection ports of integrated circuit unit 16 are respectively connected with the centralized output device 300 of experimental system sub-training device 100 configuration Cable connector electrical connection.

The fault setting device 200 includes a power fault setting unit 21, a basic component fault setting unit 22, a single-pole switch and a lamp fault setting unit 23, a relay and a DC motor fault setting unit 24, a double-pole switch fault setting unit 25, an integrated circuit fault Setting unit 26, described power supply failure setting unit 21, basic component failure setting unit 22, single-pole switch and lamp failure setting unit 23, relay and DC motor failure setting unit 24, double-pole switch failure setting unit 25, integrated circuit failure setting The units 26 are respectively configured with corresponding fault setting switches 1 , and the fault setting switches 1 are respectively electrically connected to the cable connectors of the centralized output device 300 configured in the fault setting device 200 .

The centralized output device 300 configured by the training device 100 of the experimental system includes a first cable connector 301 and a second cable connector 302, and the power supply unit 11, the basic element unit 12 and the single-pole switch and the lamp unit 13 are connected to the second cable connector 302. A cable connector 301, the relay is connected to the second cable connector 302 with the DC motor unit 14, the double pole switch unit 15 and the integrated circuit unit 16;

The centralized output device 300 of the described fault setting device 200 includes a third cable connector and a fourth cable connector. The cable connector, the relay is connected to the fourth cable connector with the DC motor fault setting unit 24 , the double pole switch fault setting unit 25 and the integrated circuit fault setting unit 26 .

Described power supply unit 11 comprises power supply indicator 111, 12V power supply control 112, 12V power supply 113, 5V power supply control 114, 5V power supply 115, fuse 116, wherein the independent circuit connection port of each component of each power supply unit 11 and experimental system The first cable connector 301 of the centralized output device 300 of the sub-training device configuration 100 is electrically connected;

The basic element unit 12 includes a sliding rheostat element 121, a fixed resistor 122, a lamp 123, a triode 124, a diode 125, and an electrolytic capacitor 126, and the independent circuit connection port of each described basic element unit is configured with the training device of the experimental system. The first cable connector of the centralized output device is electrically connected;

The single-pole switch and lamp unit 13 includes a single-pole unit switch K131, a lamp L132, a single-pole unit switch K1133, a lamp L1134, a single-pole unit switch K2135, a lamp L2136, a lamp L3137, and a single-pole unit switch K3138. The independent circuit connection port of the light unit 13 is electrically connected with the first cable connector of the centralized output device configured by the experimental system sub-training device;

Described relay and DC motor unit 14 comprise relay J4141, relay J2142, relay J3143, relay J1144, deceleration DC motor M1145; Each described relay and the independent circuit connection port of DC motor unit and experiment system sub-training device configuration The second cable connector of the centralized output device is electrically connected;

Described double-pole switch unit 15 comprises single-pole three-position switch K1151, single-pole three-position switch K2152, double-pole two-position switch K3153, and the independent circuit connection port of each described double-pole switch unit 15 is configured with the training device of the experimental system The second cable connector of the centralized output device of 100 is electrically connected;

Described integrated circuit unit 16 comprises integrated logic gate control circuit 161, integrated operational amplifier control circuit 162, integrated 555 control circuit 163, the independent circuit connection port of each described integrated circuit unit and the concentration of experimental system sub-training device configuration The second cable connector of the output device is electrically connected.

The fault setting switch of described power failure setting unit 21 comprises 12V power failure switch 211, 5V power failure switch 212, power ground wire failure switch 213, fuse failure switch 214, wherein the failure setting switch of each power failure setting unit 21 and The third cable connector of the centralized output device configured by the fault setting device is electrically connected;

The fault setting switches of the basic element fault setting unit 22 include sliding rheostat element fault switches 221, 226, fixed resistor fault switches 222, 227, lamp fault switches 223, 228, triode fault switch 229, diode fault switch 224, electrolytic capacitor Fault switch 225, wherein the fault setting switch of each basic component fault setting unit is electrically connected with the third cable connector of the centralized output device configured by the fault setting device;

The single-pole switch and the fault setting switch of the lamp fault setting unit 23 include a single-pole unit switch K fault setting switch 231, a lamp L fault setting switch 235, a single-pole unit switch K1 fault setting switch 232, a lamp L1 switch K236, and a single-pole unit switch K2 fault Setting switch 233, lamp L2 fault setting switch 237, single-pole unit switch K3 fault setting switch 234, lamp L3 fault setting switch 238, wherein each single-pole switch is configured with the fault setting switch of the lamp fault setting unit and the centralized output device configured by the fault setting device The third cable connector is electrically connected;

The fault setting switch of described relay and DC motor fault setting unit 24 comprises relay J4 fault setting switch 241, relay J2 fault setting switch 242, relay J3 fault setting switch 243, relay J1 fault setting switch 244, deceleration DC motor M1 fault setting switch 245, wherein each relay is electrically connected to the fault setting switch of the DC motor fault setting unit and the fourth cable connector of the centralized output device configured by the fault setting device;

The fault setting switch of described double-pole switch fault setting unit 25 comprises single-pole three-position switch K1 fault setting switch 251, single-pole three-position switch K fault setting switch 252, double-pole two-position switch K3 fault setting switch 253,254, wherein each The fault setting switch of the double-pole switch fault setting unit is electrically connected with the fourth cable connector of the centralized output device configured by the fault setting device;

The fault setting switch of the integrated circuit fault setting unit 26 includes an integrated logic gate control circuit fault setting switch 261, an integrated operational amplifier control circuit fault setting switch 262, and an integrated 555 control circuit fault setting switch 263, wherein each integrated circuit fault setting The fault setting switch of the unit is electrically connected with the fourth cable connector of the centralized output device configured by the fault setting device.

The basic idea of the present invention is: the experimental system can simply carry out circuit connection training, and can also carry out circuit connection and fault diagnosis training. The system is mainly composed of training device 100 and fault setting device 200. Circuit connection training can be performed. When the training device 100 and the fault setting device 200 work together, circuit connection and fault diagnosis training can be performed. Specifically, the technical scheme of the present invention is as follows:

According to the fault setting device provided by the present invention, the components of the training device for the experimental system are electrically connected, so that various faults can occur in the components by controlling the connection status of the components. The fault setting device includes a plurality of fault setting switches, and each of the fault setting switches can be connected in series in a component of the training device.

Each component of the training device includes two ports: a independent circuit connection port, b circuit connection and fault diagnosis port, two sets of connection lines a and b are connected in parallel through wires, and the connection line a is inserted in the blank to realize component measurement and circuit Connection, fault detection training. b. Connecting wires only realize the function of circuit connection of electrical components. According to the fault to be simulated and detected, one end of each component of the training device is led to the fault setting device, and a switch corresponding to each component is set in the fault setting device, so that when the switch is activated, the corresponding short circuit, normal, The state of the open circuit, so as to achieve the purpose of simulating the fault. At the same time, the circuit connection can be realized by inserting the connection line a of each component on the training device of the present invention, and various fault detection ports are provided for the students to detect faults.

According to the experimental system provided by the present invention, the training device is composed of multiple types of automotive electrical components, wherein one end of each component can be electrically connected to the fault setting device, and the state of each component is controlled by the fault setting device.

The experimental system provided by the invention includes a training device and a fault setting device. Each end of each component of the training device is severed. The training device includes two ports: an independent circuit connection port, a circuit connection and a fault diagnosis port, and each pair of circuit connection and fault diagnosis ports is connected in series with one fault setting switch; the fault setting device includes a plurality of fault setting switches and A precision potentiometer, each of the fault setting switches is connected in series in each of the cut-off components of the training device.

The content described in the embodiments of this specification is only an enumeration of the realization forms of the utility model concept. The protection scope of the utility model should not be regarded as limited to the specific forms stated in the embodiments. The protection scope of the utility model also includes Equivalent technical means that those skilled in the art can think of according to the concept of the utility model.

Claims (7)

1. The automobile circuit maintenance basic experimental device based on fault diagnosis thinking training, is characterized in that: comprise experimental system sub-training device, fault setting device, described training device comprises a plurality of automobile electrical components, each component includes for measuring An independent circuit connection port for circuit connection failure of components and a circuit connection fault diagnosis port for connecting electrical components, the two sets of ports are connected in parallel through wires, each end of each component is cut off, and the cut ends of the components are respectively Connect the wires in series with the corresponding fault setting switch in the fault setting device; Described fault setting device comprises a plurality of fault setting switches for being connected in series with each component and parts in the training device, an analog signal output unit electrically connected with each fault setting switch, and described fault setting switch is connected with the training device of the experimental system Each component corresponds to one by one, and each of the fault setting switches is connected in series with each of the corresponding cut-off components of the training device; the analog signal output unit includes a precision potentiometer, and the precision potentiometer The regulators of the precision potentiometers are respectively connected to the fault switches, and the regulators of the precision potentiometers have three states: normal, disconnected, and short-circuited, and each fault setting switch is electrically connected to the analog signal output unit. 2. the automobile circuit maintenance basic experimental device based on fault diagnosis thinking training as claimed in claim 1, is characterized in that: described experimental system sub-training device, fault setting device are provided with the centralized output device that is equipped with a plurality of ports respectively, Each described centralized output device includes at least one cable connector arranged on the fixed support, and the independent circuit connection port of each component in the sub-training device of the experimental system is connected with the cable of the centralized output device configured by the sub-training device of the experimental system each fault setting switch in the fault setting device is electrically connected with the cable connector of the centralized output device configured by the fault setting device; The corresponding port of the centralized output device of the device is connected. 3. The automobile circuit maintenance basic experimental device based on fault diagnosis thinking training as claimed in claim 2, characterized in that: the sub-training device of the experimental system includes a power supply unit, a basic element unit, a single-pole switch and a lamp unit, a relay and DC motor unit, double-pole switch unit, integrated circuit unit, the independent circuit connection ports of the described power supply unit, basic element unit, single-pole switch and lamp unit, relay and DC motor unit, double-pole switch unit, and integrated circuit unit are respectively connected with The experimental system is electrically connected to the cable connector of the centralized output device configured by the training device. 4. The automobile circuit maintenance basic experimental device based on fault diagnosis thinking training as claimed in claim 2, wherein: said fault setting device comprises a power supply fault setting unit, a basic element fault setting unit, a single-pole switch and a lamp fault setting unit, relay and DC motor fault setting unit, double pole switch fault setting unit, integrated circuit fault setting unit, power supply fault setting unit, basic element fault setting unit, single pole switch and lamp fault setting unit, relay and DC motor fault The setting unit, the double-pole switch fault setting unit, and the integrated circuit fault setting unit are respectively equipped with corresponding fault setting switches, and the fault setting switches are respectively electrically connected to the cable connectors of the centralized output device configured by the fault setting device. 5. as described in claim 3 or 4 based on the automobile circuit maintenance basic experimental device of fault diagnosis thinking training, it is characterized in that: the centralized output device of described experimental system sub-training device configuration comprises the first cable connector and The second cable connector, the power supply unit, the basic element unit and the single pole switch and the lamp unit are connected to the first cable connector, and the relay and the DC motor unit, the double pole switch unit and the integrated circuit unit are connected to the second cable connection device; The centralized output device of the fault setting device includes a third cable connector and a fourth cable connector, the power supply fault setting unit, the basic element fault setting unit, the single-pole switch and the lamp fault setting unit are connected to the third cable connector, the The relay, the DC motor fault setting unit, the double-pole switch fault setting unit, and the integrated circuit fault setting unit are connected to the fourth cable connector. 6. The automobile circuit maintenance basic experimental device based on fault diagnosis thinking training as claimed in claim 3, characterized in that: said power supply unit includes power supply indication, 12V power supply control, 12V power supply, 5V power supply control, 5V power supply, fuse , wherein the independent circuit connection port of each component of each power supply unit is electrically connected with the first cable connector of the centralized output device configured by the experimental system sub-training device; The basic element unit includes a sliding variable resistance element, a fixed resistor, a lamp, a triode, a diode, and an electrolytic capacitor. The independent circuit connection ports of each of the basic element units are connected to the first part of the centralized output device configured by the experimental system sub-training device. Cable connector electrical connection; The single-pole switch and lamp unit include single-pole unit switch K, lamp L, single-pole unit switch K1, lamp L1, single-pole unit switch K2, lamp L2, lamp L3 single-pole unit switch K3, each of the single-pole switch and lamp unit The independent circuit connection port of the experimental system is electrically connected with the first cable connector of the centralized output device configured by the sub-training device of the experimental system; Described relay and DC motor unit comprise relay J4, relay J2, relay J3, relay J1, deceleration DC motor M1; Each described relay and DC motor unit's independent circuit connection port and the concentration of experimental system sub-training device configuration the second cable connector of the output device is electrically connected; The double-pole switch unit includes a single-pole three-position switch K1, a single-pole three-position switch K2, and a double-pole two-position switch K3, and the independent circuit connection ports of each of the double-pole switch units are connected to the centralization of the experimental system sub-training device configuration. the second cable connector of the output device is electrically connected; The integrated circuit unit includes an integrated logic gate control circuit, an integrated operational amplifier control circuit, and an integrated 555 control circuit, and the independent circuit connection port of each integrated circuit unit is connected to the first centralized output device of the experimental system sub-training device configuration. Two cable connectors are electrically connected. 7. The automobile circuit maintenance basic experimental device based on fault diagnosis thinking training as claimed in claim 4, wherein: the fault setting switch of the power fault setting unit comprises a 12V power fault switch, a 5V power fault switch, and a power ground wire Fault switch, fuse fault switch, wherein the fault setting switch of each power supply fault setting unit is electrically connected with the third cable connector of the centralized output device configured by the fault setting device; The fault setting switch of the basic element fault setting unit includes a sliding rheostat element fault switch, a fixed resistance fault switch, a lamp fault switch, a triode fault switch, a diode fault switch, and an electrolytic capacitor fault switch, wherein each basic element fault setting unit The fault setting switch is electrically connected with the third cable connector of the centralized output device configured by the fault setting device; The fault setting switches of the single-pole switch and lamp fault setting unit include single-pole unit switch K fault setting switch, lamp L fault setting switch, single-pole unit switch K1 fault setting switch, lamp L1 switch K, single-pole unit switch K2 fault setting switch, lamp L2 fault setting switch, single-pole unit switch K3 fault setting switch, lamp L3 fault setting switch, wherein each single-pole switch is electrically connected to the fault setting switch of the lamp fault setting unit and the third cable connector of the centralized output device configured by the fault setting device ; The fault setting switch of the relay and the DC motor fault setting unit includes a relay J4 fault setting switch, a relay J2 fault setting switch, a relay J3 fault setting switch, a relay J1 fault setting switch, and a deceleration DC motor M1 fault setting switch, wherein each relay It is electrically connected with the fault setting switch of the DC motor fault setting unit and the fourth cable connector of the centralized output device configured by the fault setting device; The fault setting switch of described double-pole switch fault setting unit comprises single-pole three-position switch K1 fault setting switch, single-pole three-position switch K fault setting switch double-pole double-position switch K3 fault setting switch, wherein each double-pole switch fault setting unit The fault setting switch is electrically connected with the fourth cable connector of the centralized output device configured by the fault setting device; The fault setting switch of the integrated circuit fault setting unit includes an integrated logic gate control circuit fault setting switch, an integrated operational amplifier control circuit fault setting switch, and an integrated 555 control circuit fault setting switch, wherein the fault setting of each integrated circuit fault setting unit The switch is electrically connected with the fourth cable connector of the centralized output device configured by the fault setting device.