Line fault analysis and assessment equipment
By simulating faults on a PCB board with a built-in main control module and fault setting circuit module, the problem of frequent wiring changes required in existing equipment is solved, achieving efficient line fault assessment and equipment protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-03-24
AI Technical Summary
The existing fault assessment equipment requires frequent wiring changes, resulting in a heavy workload for teachers, low efficiency, and easy damage to the equipment.
Design a PCB board with a built-in main control module and fault setting circuit module. Simulate faults by controlling the opening and closing of relay switches and input fault information into external devices, avoiding changes to the actual wiring of external devices.
It reduced the workload of teachers, improved the efficiency of assessment, protected external equipment from damage, and cultivated students' independent thinking ability.
Smart Images
Figure CN224035993U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to teaching device technical field, especially, relate to a line fault analysis examination equipment. BACKGROUND
[0002] With the development of domestic emerging industrialization road, the application of electromechanical equipment in manufacturing industry is more and more extensive, and in recent years, the demand of enterprises for electromechanical equipment maintenance, maintenance personnel increases year by year, and higher requirements for the professional knowledge and operation skill of maintenance, maintenance personnel are put forward.
[0003] The maintenance and repair of electromechanical equipment cannot be separated from the wiring of each device, and a device involves power supply line, communication line and the like, and wiring error is prone to occur during maintenance. Therefore, maintenance and repair personnel need to master the skills of analyzing the causes of wiring faults and troubleshooting, which is also an important content of vocational school teaching. However, at present, many vocational schools mainly adopt theoretical teaching, and students have less hands-on maintenance practice, and there is a lack of complete wiring fault examination equipment on the market. In actual training, teachers are all manually pre-set short circuit, open circuit, wrong connection, virtual connection and other common faults on specific equipment, and then let students carry out wiring operation examination. After the students find the fault, they need to judge the cause of the fault and directly report to the teacher, and the teacher evaluates whether the judgment is correct, and at the same time, the teacher needs to manually reset when recovering the fault after examination, which leads to the abnormally heavy workload of the teacher and low efficiency; on the other hand, frequent fault setting of specific equipment is easy to damage the external equipment. UTILITY MODEL CONTENT
[0004] Therefore, the utility model aims at providing a line fault analysis examination equipment.
[0005] A line fault analysis examination equipment, comprising: a shell, internally provided with a containing space; a PCB board provided in the containing space, provided with a circuit, comprising a main control module and a fault setting circuit module, the main control module and the fault setting circuit module are electrically connected, the main control module is used for receiving, processing input information and outputting control information to the fault setting circuit module; the fault setting circuit module is used for simulating corresponding fault under the control of the main control module; an output interface is provided on the front panel of the shell and is electrically connected with the fault setting circuit module, which is used for connecting with external equipment; a touch screen is provided on the front panel of the shell and is electrically connected with the main control module, which is used for man-machine interaction.
[0006] The line fault analysis and examination equipment has the advantages that the line fault analysis and examination equipment is capable of simulating actual faults by controlling the on-off of the corresponding fault setting circuit of the main control module and outputting to the external equipment, the corresponding faults of the external equipment can be presented without changing the line of the external equipment, the workload of teachers is reduced, and the external equipment is effectively protected.
[0007] Further, the fault setting circuit module comprises a digital quantity input fault setting circuit, the digital quantity input fault setting circuit comprises a first chip, a second chip and a plurality of fault setting submodules; the first chip is provided with a first input pin and at least one first output pin, the second chip is provided with at least one second input pin and at least one second output pin, the first chip is connected with the main control module through the first input pin, and the second chip is connected with the output interface through the second output pin; the fault setting submodule is connected between the first output pin and the second input pin and is used for setting faults.
[0008] Through the above technical scheme, the corresponding digital quantity input fault is set by the fault setting submodule and output to the external equipment, so that the external equipment presents the corresponding input abnormality.
[0009] Further, the fault setting submodule comprises a first switch, a power input end, a second switch, a third switch and a ground end; the first switch is connected between the first output pin and the second input pin, one end of the second switch is connected with the power input end, and the other end is connected in parallel between the first switch and the first output pin or between the first switch and the second input pin; one end of the third switch is connected with the ground end, and the other end is connected in parallel between the first switch and the first output pin or between the first switch and the second input pin; the first switch, the second switch and the third switch are controlled to be disconnected or closed by the main control module.
[0010] Through the above technical scheme, different digital quantity input faults are set by the opening and closing cooperation of the first switch, the second switch and the third switch.
[0011] Further, the first switch, the second switch and the third switch are relay switches and are respectively connected with the output end of the main control module.
[0012] Through the above technical scheme, the opening and closing of the corresponding relay switch are controlled by the main control module.
[0013] Further, the fault setting submodule, the first output pin, the second input pin and the second output pin are each provided with three groups.
[0014] Through the technical scheme, three groups of channels can simulate faults of three input channels, thereby improving the difficulty of examination.
[0015] Further, the output interface comprises an electrical fault interface and a network fault interface, the electrical fault interface is used for connecting with electrical equipment, and the network fault interface is used for connecting with network communication equipment.
[0016] Through the technical scheme, the traditional electrical fault examination question and the network communication fault question can be set through the different output interfaces connecting with the electrical equipment or the network communication equipment, and the examination content is enriched.
[0017] Further, the PCB further comprises a power module, the power module is used for connecting with an external power supply and is electrically connected with the main control module and the fault setting circuit module respectively.
[0018] Through the technical scheme, the power module is connected with the external power supply and supplies the direct current power required by the main control module and the fault setting circuit module.
[0019] Further, the line fault analysis examination equipment further comprises a power interface, and the power module is connected with the external power supply through the power interface.
[0020] Through the technical scheme, the external power supply is connected to the power module of the PCB through the power interface.
[0021] Further, the line fault analysis examination equipment further comprises a bus interface, and the main control module is connected with an external computer through the bus interface.
[0022] Through the technical scheme, the external computer is connected with the main control module through the bus interface, and the program stored in the main control module is convenient to modify or burn.
[0023] Further, the shell further comprises a pair of handles, and the handles are installed on the front panel of the shell.
[0024] Through the technical scheme, the line fault analysis examination equipment provided by the utility model is convenient to move to different places for students to use. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 A perspective structural schematic view of the line fault analysis examination equipment provided by the utility model is provided.
[0026] Figure 2 A module schematic view of the PCB provided by the utility model is provided.
[0027] Figure 3A structure schematic diagram of the digital quantity input fault setting circuit is provided in the utility model.
[0028] Figure 4 A main interface schematic diagram of the touch screen is provided in the utility model. PREFERRED EMBODIMENT
[0029] The inventor provides a line fault analysis and examination equipment in view of the problems that the existing line examination equipment needs to frequently change the wiring of the examination equipment to perform corresponding fault examination, which leads to heavy tasks of teachers, low efficiency and easy damage of the examination equipment. The line fault analysis and examination equipment is internally provided with a PCB board integrated with a main control module and a fault setting circuit module. The opening and closing of the relay switch in the corresponding fault setting circuit is controlled by the main control module to simulate specific faults such as short circuit, open circuit, wrong connection and virtual connection. The fault information is input into the external equipment, the external equipment can present the corresponding fault state without changing the internal wiring of the external equipment, thereby reducing the work burden of teachers and reducing the change of the line of the external equipment to protect the external equipment. A specific embodiment of the fault examination and analysis equipment of the utility model is provided as follows:
[0030] Please refer to Figures 1 to 4 , Figure 1 A three-dimensional structure schematic diagram of the fault analysis and examination equipment is provided in the utility model. Figure 2 A module schematic diagram of the PCB board is provided in the utility model. Figure 3 A structure schematic diagram of the digital quantity input fault setting circuit is provided in the utility model. Figure 4 A main interface schematic diagram of the touch screen is provided in the utility model.
[0031] The utility model provides a kind of line fault analysis and examination equipment, including shell 1, PCB board 2, output interface 3, touch screen 4, power interface 5 and bus interface 6. The output interface 3 is used to connect with external equipment;The power interface 5 is used to connect with external power supply, carries out power supply;The bus interface 6 is used to connect with computer, and the bus interface 6 is connected to the PCB board 2 with the touch screen 4 respectively to input control information to it.
[0032] The shell 1 is the box body with accommodating space in the inside, the PCB board 2 is arranged in the accommodating space, the output interface 3, the touch screen 4, the power interface 5 and the bus interface 6 are embedded on the front panel of the shell 1. The PCB board 2 is electrically connected with the output interface 3, the touch screen 4, the power interface 5 and the bus interface 6 respectively. Preferably, the two ends of the front panel width direction of the shell 1 are further provided with a pair of handles 11 respectively, to facilitate user carrying and shifting.
[0033] The PCB 2 is provided with a circuit, including a power module E1, a main control module E2 and a fault setting circuit module E3. The power module E1 and the power interface 5 are connected by wires, for converting external power into direct current and supplying power to the main control module E2 and the fault setting circuit module E3 respectively; the main control module E2 is electrically connected with the touch screen 4, the bus interface 6 and the fault setting circuit module E3 respectively, the main control module E2 receives control information input by the touch screen 4 and / or the bus interface 6 and processes and / or stores them, then controls the on-off of the corresponding fault circuit in the fault setting circuit module E3, thereby simulating the corresponding fault information. In this embodiment, the specific structure of the main control module E2 can refer to the single-chip microcomputer provided with an MCU chip in the prior art.
[0034] The fault setting circuit module E3 is connected with external devices through the output interface 3, including several fault setting circuits, which can simulate common electrical faults and network communication faults such as digital input fault, digital output fault, analog input fault and bus fault. Please refer to Figure 3In the embodiment, the principle of setting the fault of the fault analysis and evaluation equipment is illustrated by taking the digital quantity input fault setting circuit E31 as an example. The digital quantity input fault setting circuit E31 comprises a first chip CN1, a second chip CN2 and a plurality of fault setting sub-modules E311. The first chip CN1 is provided with a first input pin P1 and at least one first output pin P2. The second chip CN2 is respectively provided with at least one second input pin Q1 and at least one second output pin Q2. The fault setting sub-module E311 is connected between the first output pin P2 and the second input pin Q1. Specifically, the fault setting sub-module E311 comprises a first switch K1, a power input terminal Vcc, a second switch K2, a third switch K3 and a ground terminal GND. The first switch K1 is connected between the first output pin P2 and the second input pin Q1. One end of the second switch K2 is connected with the power input terminal Vcc, and the other end is connected in parallel between the first switch K1 and the first output pin P2 or between the first switch K1 and the second input pin Q1. The power input terminal Vcc is connected to the power module E1. One end of the third switch K3 is connected with the ground terminal GND, and the other end is connected in parallel between the first switch K1 and the first output pin P2 or between the first switch K1 and the second input pin Q1. The first switch K1, the second switch K2 and the third switch K3 are controlled to be opened and / or closed by the main control module E2. The first chip CN1 is connected with the main control module E2 through the first input pin P1. The second chip CN2 is connected with the output interface 3 through the second output pin Q2 and connected with an external device, so as to input the fault information into the external device. The number of the fault setting sub-module E311, the first output pin P2, the second input pin Q1 and the second output pin Q2 can be set according to the number of the external device to be connected. In the embodiment, the first switch K1, the second switch K2 and the third switch K3 are the relay switches in the prior art, which are respectively connected with the output end of the main control module E2. The main control module E2 controls the opening and closing of the first switch K1, the second switch K2 and the third switch K3 according to the preset program. In addition, the fault setting sub-module E311, the first output pin P2, the second input pin Q1 and the second output pin Q2 are provided with three groups, which can simulate the faults of three digital input channels and improve the evaluation difficulty.
[0035] Under the control of the main control module E2, the digital quantity input fault setting circuit has the following four working states: 1, normal working state: the first switch K1 is closed, the second switch K2 and the third switch K3 are disconnected, the signal is normally inputted and received, and the external device normally receives the input signal and successfully identifies; 2, signal input circuit state: the first switch K1 is disconnected, and there is no input signal in the external device; 3, signal and power short circuit state: the first switch K1 and the second switch K2 are closed, and the third switch K3 is disconnected, the external device receives the input signal at the wrong time, that is, the time point of receiving the input signal is delayed and / or advanced; 4, signal and ground short circuit state: the first switch K1 and the third switch K3 are closed, and the second switch K2 is disconnected, the external device normally receives the input signal, but cannot identify. The students observe the specific abnormal performance of the external device to judge the fault type set by the teacher, thereby deepening the learning impression.
[0036] The output interface 3 is connected with the external device through wires, and outputs the fault setting information of the fault setting circuit module 24 to the external device, so that the external device presents the related fault state for the students to judge. In the embodiment, the output interface 3 includes an electrical fault interface 31 and a network fault interface 32, the electrical fault interface 31 is connected with electrical equipment, and can perform electrical fault simulation, the network fault interface 32 is connected with network communication equipment, and can perform network communication fault simulation, thereby enriching the examination content. Preferably, the number of the electrical fault interface 31 and the network fault interface 32 is two or more, which can connect two or more external devices, input different fault information to different external devices for the students to distinguish, and enrich the examination content.
[0037] Please refer to Figure 4The touch screen 4 is used for human-computer interaction, has a key circuit board connected with a signal input pin of the main control module E2, and a main interface is provided with function keys such as a system setting key, a fault setting key, a fault troubleshooting key and a history record key. The key circuit board receives a trigger signal of each key. A teacher clicks the system setting key to enter a system setting interface, and can change device password, question score proportion, examination time length and the like in the system setting interface. The teacher clicks the fault setting key to enter a fault setting interface, and inputs simulation fault information in the fault setting interface. The PCB board 2 receives the information, simulates corresponding faults and outputs to the external device through the output interface 3, so that the external device presents corresponding operation abnormities. A student clicks the fault troubleshooting key to enter an examination interface, judges according to operation abnormities of the external device, selects corresponding answers in the examination interface, the PCB board 2 receives student input information, compares student input answers with standard answers and scores, and displays student examination scores on the touch screen after the student finishes answering questions. The teacher clicks the history record key to enter a history record interface, and can check student examination scores in the history record interface.
[0038] The power interface 5 is connected with an external power supply through wires, and supplies power to the fault analysis examination device. In the embodiment, the external power supply is a 24V alternating current power supply and / or a direct current power supply.
[0039] The bus interface 6 is connected with an external computer through wires, and is used for modifying and / or burning an examination program stored in the main control module E2 through the external computer.
[0040] Compared with the prior art, the fault analysis examination device has the following advantages:
[0041] (1) The fault setting circuit module 24 simulates faults and outputs to the external device, so that the external device presents corresponding fault states, without changing actual wiring of the external device, and can be reset by one key when another fault is set, so that fault setting is convenient and fast.
[0042] (2) The main control module 22 in the PCB board can automatically compare student input answers with standard answers and score, and performs real-time feedback, so that a teacher does not need to judge at one side during teaching, effectively reduces work pressure of the teacher, and can cultivate self-thinking ability of the student.
[0043] (3) The wiring of the external device does not need to be changed when the fault is set, so that the external device is protected from being damaged.
[0044] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the concept of the utility model, several modifications and improvements can be made, and the utility model also intends to include these changes and modifications.
Claims
1. A line fault analysis examination device, characterized by, The utility model relates to a fault setting device, including: A shell is internally equipped with a containing space; A PCB board is arranged in the containing space and is provided with a circuit including a main control module and a fault setting circuit module, the main control module and the fault setting circuit module are electrically connected, the main control module is used for receiving, processing input information and outputting control information to the fault setting circuit module;The fault setting circuit module is used for simulating corresponding faults under the control of the main control module; An output interface is arranged on the front panel of the shell and is electrically connected with the fault setting circuit module for connecting with external equipment; A touch screen is arranged on the front panel of the shell and is electrically connected with the main control module for human-computer interaction.
2. The line fault analysis examination apparatus according to claim 1, characterized by: The fault setting circuit module includes a digital quantity input fault setting circuit, the digital quantity input fault setting circuit includes a first chip, a second chip and a plurality of fault setting submodules;The first chip is provided with a first input pin and at least one first output pin, the second chip is provided with at least one second input pin and at least one second output pin, the first chip is connected with the main control module through the first input pin, and the second chip is connected with the output interface through the second output pin;The fault setting submodule is connected between the first output pin and the second input pin and is used for setting faults.
3. The line fault analysis examination device according to claim 2, characterized in that: The fault setting submodule includes a first switch, a power input end, a second switch, a third switch and a ground terminal;The first switch is connected between the first output pin and the second input pin, one end of the second switch is connected with the power input end, and the other end is connected in parallel between the first switch and the first output pin or between the first switch and the second input pin;One end of the third switch is connected with the ground terminal, and the other end is connected in parallel between the first switch and the first output pin or between the first switch and the second input pin; The first switch, the second switch and the third switch are controlled by the main control module to be opened or closed.
4. The line fault analysis examination device according to claim 3, characterized in that: The first switch, the second switch and the third switch are relay switches and are respectively connected with the output end of the main control module.
5. The line fault analysis review apparatus of any of claims 2-4, wherein: The fault setting submodule, the first output pin, the second input pin and the second output pin each have three groups.
6. The line fault analysis examination device of claim 1, wherein: The output interface includes an electrical fault interface and a network fault interface, the electrical fault interface is used for connecting with electrical equipment, and the network fault interface is used for connecting with network communication equipment.
7. The line fault analysis examination device of claim 1, wherein: The PCB board further includes a power module, the power module is used for connecting with external power supply and is electrically connected with the main control module and the fault setting circuit module respectively.
8. The line fault analysis evaluation device of claim 7, wherein: It further includes a power interface, and the power module is connected with external power supply through the power interface.
9. The line fault analysis evaluation device of claim 1, wherein: It further includes a bus interface, and the main control module is connected with external computer through the bus interface.
10. The fault analysis examination apparatus according to claim 1, characterized by: The shell further includes a pair of handles, and the handles are installed on the front panel of the shell.