Signal transmitting and receiving device for simulating circuit maintenance

Abstract

The utility model relates to the technical field of analog circuit maintenance, in particular to a signal transceiver for analog circuit maintenance, which comprises a shell, a power module fixedly connected to the rear part in the shell, and a first connecting line fixedly connected to the left side of the front end surface of the power module. One end, away from the power module, of the first connecting line is fixedly connected with an analog input module, an input plug is arranged below the front end face of the analog input module, the right side of the front end face of the power module is fixedly connected with a second connecting line, and one end, away from the power module, of the second connecting line is fixedly connected with an analog output module; through design cooperation, the device not only avoids affecting normal use of equipment, but also integrates various power supply and analog input and output functions, and does not need to prepare various types of equipment such as transformers and switching power supplies for power supply requirements of different circuit boards, and also does not need to prepare various types of signal generators. And then the numerical values of each group of models are measured one by one through a universal meter.

Description

Technical Field

[0001] The utility model relates to the technical field of analog circuit maintenance, in particular to a signal transceiver for analog circuit maintenance. Background Art

[0002] A circuit board, also known as a printed circuit board, is a substrate used to support and connect electronic components. It is made of an insulating material, usually epoxy laminate or similar material, covered with conductive copper foil.

[0003] The copper foil on the circuit board is formed into a circuit through chemical etching or other methods to connect various electronic components, such as resistors, capacitors, transistors, integrated circuits, etc. When a circuit board fails, the following operations are required to repair the circuit board: fault detection, damage observation, component replacement, circuit repair, welding and functional testing. Among them, fault detection is the most important link. Generally, a multimeter is used to detect the voltage and resistance values ​​of each key point on the circuit board to determine the approximate scope of the fault.

[0004] However, the analog detection circuit boards of air compressors and refrigerators on the market cannot be repaired alone after a fault occurs. It is necessary to use an intact unit to install the faulty circuit board on the good unit for testing, which not only affects the use of the normal unit but also causes good equipment to malfunction, resulting in low work efficiency. In view of this, a signal transceiver for analog circuit maintenance is provided to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a signal transceiver for analog circuit maintenance.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a signal transceiver device for analog circuit maintenance, comprising a shell, a power module is fixedly connected to the rear of the shell, a first connecting line is fixedly connected to the left side of the front end face of the power module, an end of the first connecting line away from the power module is fixedly connected to an analog input module, an input plug is arranged below the front end face of the analog input module, a second connecting line is fixedly connected to the right side of the front end face of the power module, an end of the second connecting line away from the power module is fixedly connected to the analog output module, an output plug is arranged below the front end face of the analog output module, a third connecting line is fixedly connected to the middle of the front end face of the power module, and an end of the third connecting line away from the power module is fixedly connected to a touch screen.

[0007] As a further description of the above technical solution: the bottom of the analog input module is fixedly connected to the left side of the lower interior of the shell, the bottom of the analog output module is fixedly connected to the right side of the lower interior of the shell, and the outer sides of the input plug and the output plug are in contact with the bottom end of the front side of the inner shell. This not only avoids preparing a variety of transformers, switching power supplies and other equipment for different circuit board power supply requirements, but also avoids preparing a variety of signal generators and then measuring the values ​​of each group of models one by one with a multimeter.

[0008] As a further description of the above technical solution: the power module utilizes a multi-coil control transformer, a rectifier filter circuit, and a voltage stabilizing circuit to realize a variety of AC and DC voltage sources, which can reduce the purchase of multiple power supplies and signal generators for circuit board maintenance to a certain extent.

[0009] As a further description of the above technical solution: the analog input module uses the multi-channel analog input module of Siemens PLC, and the analog input module realizes multiple signal acquisition functions such as 0-20mA, 0-10V, 0-5V, + / -5V, + / -2.5V, RTD, TC, etc. The analog output module is a multi-channel analog output module of Siemens PLC, and the analog output module realizes 0-20mA, 0-10V, 0-5V, + / -5V, + / -2.5V, etc. It has high integration and can cope with the detection of multiple circuit boards, while avoiding testing faulty circuit boards on normal equipment, causing equipment damage.

[0010] As a further description of the above technical solution: the touch screen uses a Siemens touch screen to communicate with the PLC, sets the type of analog input and output channels and displays the collected analog signals. The data of the detected circuit board can be displayed on the touch screen through the PLC, allowing operators to understand the data more intuitively.

[0011] As a further description of the above technical solution: the left and right ends of the touch screen are fixedly connected with L-shaped plates, the middle of the outer side of the shell is slidably connected with a pull rod, the top end of the outer side of the pull rod is fixedly connected with a pull ring, the outer side of the pull rod away from the pull ring is fixedly connected with a fixed plate, the outer end surface of the fixed plate is fixedly connected with a spring sheet, the end of the spring sheet away from the fixed plate is fixedly connected to the outer side of the sleeve plate, and the middle of the lower inner side of the L-shaped plate is slidably connected to the top end of the inner side of the pull rod.

[0012] As a further description of the above technical solution: the interior of the sleeve is hollow, and a slot is opened from front to back on the top of the sleeve, and the shape of the slot on the top of the sleeve matches the cross-sectional shape of the bottom of the L-shaped plate. A circular through hole is opened near the middle of the bottom of the L-shaped plate, and the diameter and position of the through hole opened in the L-shaped plate match the cross-sectional diameter and position of the top inner side of the pull rod. This can avoid the need to use tools to remove the touch screen from the shell when the touch screen has problems and needs to be replaced, thereby improving the installation and disassembly efficiency of the touch screen to a certain extent.

[0013] The utility model has the following beneficial effects:

[0014] The utility model designs a signal transceiver device for analog circuit maintenance. Through design coordination, the device combines power supply, analog signal generation, analog signal monitoring, display and other energy supplies, inputs 220VAC, and outputs voltage sources of various voltage levels such as 12VAC, 19VAC, 24VAC, 36VAC, 24VDC, 12VDC, 5VDC, etc., to cope with various circuit board power supply requirements encountered in existing maintenance. The analog input and analog output functions can be adjusted to different types. A touch screen is provided, through which the type of analog signal can be set and the value of the analog signal can be monitored, which not only avoids affecting the normal use of the equipment, but also integrates various power supplies and analog input and output functions. There is no need to prepare many kinds of transformers, switching power supplies and other equipment for different circuit board power supply requirements, nor is there any need to prepare many kinds of signal generators, and then measure the value of each group of models one by one through a multimeter.

[0015] The utility model designs a signal transceiver device for analog circuit maintenance. Through design coordination, the device can avoid using bolts to fix the touch screen on the top of the shell, and uses the effect of a spring sheet supporting a pull rod inserted into an L-shaped plate to fix the touch screen on the top of the shell, which can prevent the need to use tools to remove the touch screen from the shell when the touch screen has a problem and needs to be replaced, thereby improving the installation and removal efficiency of the touch screen to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the shell surface section of the utility model;

[0018] Figure 3 This is a schematic diagram of the top cross-sectional structure of the sleeve plate of the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the circuit structure of the analog input module and the analog output module.

[0020] Legend:

[0021] 1. Shell; 2. Input plug; 3. Output plug; 4. Touch screen; 5. L-shaped plate; 6. Set plate; 7. Pull rod; 8. Pull ring; 9. Power module; 10. First connecting line; 11. Analog input module; 12. Second connecting line; 13. Analog output module; 14. Third connecting line; 15. Fixed plate; 16. Spring sheet. DETAILED DESCRIPTION

[0022] Reference Figure 1-Figure 4 The utility model provides a signal transceiver for analog circuit maintenance, comprising a housing 1, a power module 9 is fixed by bolts at the rear of the housing 1, a first connecting line 10 is arranged on the left side of the front end surface of the power module 9, an analog input module 11 is arranged at the end of the first connecting line 10 away from the power module 9, an input plug 2 is arranged below the front end surface of the analog input module 11, a second connecting line 12 is arranged on the right side of the front end surface of the power module 9, an analog output module 13 is arranged at the end of the second connecting line 12 away from the power module 9, an output plug 3 is arranged below the front end surface of the analog output module 13, a third connecting line 14 is arranged in the middle of the front end surface of the power module 9, a touch screen 4 is arranged at the end of the third connecting line 14 away from the power module 9, the bottom of the analog input module 11 is fixedly connected to the left side of the lower part of the housing 1, the bottom of the analog output module 13 is fixedly connected to the right side of the lower part of the housing 1, the outer sides of the input plug 2 and the output plug 3 are both in contact with the bottom end of the front side of the housing 1, not only to avoid preparing a variety of transformers, switching power supplies and other equipment for different circuit board power supply requirements, but also to avoid preparing a variety of signal generators, and then measuring the values ​​of each group of models one by one through a multimeter.

[0023] As a further implementation scheme of the above technical scheme: the power module 9 utilizes a multi-coil control transformer, a rectifier filter circuit, and a voltage stabilizing circuit to realize a variety of AC and DC voltage sources, which can reduce the purchase of a variety of power supplies and signal generators due to circuit board maintenance to a certain extent.

[0024] As a further implementation plan of the above technical solution: the analog input module 11 uses the multi-channel analog input module 11 of Siemens PLC, and the analog input module 11 realizes multiple signal acquisition functions such as 0-20mA, 0-10V, 0-5V, + / -5V, + / -2.5V, RTD, TC, etc. The analog output module 13 uses the multi-channel analog output module 13 of Siemens PLC, and the analog output module 13 realizes 0-20mA, 0-10V, 0-5V, + / -5V, + / -2.5V, etc. It has high integration and can cope with the detection of multiple circuit boards, while avoiding testing faulty circuit boards on normal equipment, causing equipment damage.

[0025] As a further implementation scheme of the above technical scheme: the touch screen 4 uses a Siemens touch screen 4 to communicate with the PLC, sets the type of analog input and output channels and displays the collected analog signals. The data of the detected circuit board can be displayed on the touch screen 4 through the PLC, allowing the operator to understand the data more intuitively.

[0026] As a further implementation scheme of the above technical scheme: the left and right ends of the touch screen 4 are fixed with an L-shaped plate 5 by bolts, the middle of the inner outer side of the shell 1 is penetrated and slides by a pull rod 7, the pull ring 8 is welded to the outer top of the pull rod 7, the outer side of the end of the pull rod 7 away from the pull ring 8 is welded to the fixed plate 15, the outer end face of the fixed plate 15 is welded with a spring sheet 16, the end of the spring sheet 16 away from the fixed plate 15 is welded and fixed to the inner and outer sides of the sleeve plate 6, and the inner middle of the lower part of the L-shaped plate 5 is slidably connected to the inner top of the pull rod 7.

[0027] As a further implementation scheme of the above technical scheme: the interior of the sleeve plate 6 is hollow, and a slot is opened from front to back on the top of the sleeve plate 6, and the shape of the slot on the top of the sleeve plate 6 matches the cross-sectional shape of the bottom of the L-shaped plate 5. A circular through hole is opened near the middle of the bottom of the L-shaped plate 5, and the diameter and position of the through hole opened on the L-shaped plate 5 match the cross-sectional diameter and position of the inner top end of the pull rod 7. This can avoid the need to use tools to remove the touch screen 4 from the shell 1 when the touch screen 4 has problems and needs to be replaced, thereby improving the installation and disassembly efficiency of the touch screen 4 to a certain extent.

[0028] Working principle:

[0029] When using the utility model, first install the touch screen 4 on the top of the shell 1, insert the third connecting line 14 located in the middle of the front side of the power module 9 into the bottom interface of the touch screen 4, and then place the touch screen 4 with the L-shaped plate 5 flat on the top of the shell 1. At this time, the bottom of the L-shaped plate 5 is inserted into the slot on the top of the inner part of the cover plate 6. At this time, the L-shaped plate 5 is blocked by the top inner side of the pull rod 7 and cannot continue to move downward. At this time, the operator can hook the pull ring 8 and pull it outward, and the pull rod 7 drives the fixing plate 15 to move toward the outside of the cover plate 6, and the spring sheet 16 is deformed. At this time, the L-shaped plate 5 continues to move downward inside the cover plate 6 until the bottom end of the L-shaped plate 5 contacts the bottom of the cover plate 6. , loosen the pull ring 8, the pull rod 7 is inserted into the hole of the L-shaped plate 5 due to the rebound of the spring sheet 16, the touch screen 4 is installed, the damaged circuit board is removed from the inside of the air compressor or refrigerator, and the connecting wire for detection is inserted into the input plug 2 and the output plug 3, and the other end is connected to the key point of the circuit board. First, turn on the analog input module 11 and the analog output module 13. The power module 9 supplies power to the analog input module 11 and the analog output module 13 through the first connecting line 10 and the second connecting line 12. At this time, the operator can set the type of analog signal and monitor the value of the analog signal through the screen to determine where the problem is on the circuit board.

[0030] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A signal transceiver for analog circuit maintenance, comprising a housing (1), characterized in that: A power module (9) is fixedly connected to the rear of the housing (1); a first connection line (10) is fixedly connected to the left side of the front end of the power module (9); an end of the first connection line (10) away from the power module (9) is fixedly connected to an analog input module (11); an input plug (2) is provided below the front end of the analog input module (11); a second connection line (12) is fixedly connected to the right side of the front end of the power module (9); an end of the second connection line (12) away from the power module (9) is fixedly connected to an analog output module (13); an output plug (3) is provided below the front end of the analog output module (13); a third connection line (14) is fixedly connected to the middle of the front end of the power module (9); and an end of the third connection line (14) away from the power module (9) is fixedly connected to a touch screen (4).

2. A signal transceiver for analog circuit maintenance according to claim 1, characterized in that: The bottom of the analog quantity input module (11) is fixedly connected to the lower left side of the interior of the shell (1), the bottom of the analog quantity output module (13) is fixedly connected to the lower right side of the interior of the shell (1), and the outer sides of the input plug (2) and the output plug (3) are both in contact with the bottom end of the front side of the interior of the shell (1).

3. The signal transceiver device for analog circuit maintenance according to claim 1, characterized in that: The power supply module (9) utilizes a multi-coil control transformer, a rectifier filter circuit, and a voltage stabilization circuit to realize a variety of AC and DC voltage sources.

4. The signal transceiver device for analog circuit maintenance according to claim 1, characterized in that: The analog quantity input module (11) uses a multi-channel analog quantity input module (11) of Siemens PLC, and the analog quantity input module (11) realizes 0-20mA, 0-10V, 0-5V, + / -5V, + / -2.5V, RTD, TC multiple signal acquisition functions; the analog quantity output module (13) uses a multi-channel analog quantity output module (13) of Siemens PLC, and the analog quantity output module (13) realizes 0-20mA, 0-10V, 0-5V, + / -5V, + / -2.5V.

5. The signal transceiver device for analog circuit maintenance according to claim 1, characterized in that: The touch screen (4) uses a Siemens touch screen (4) to communicate with the PLC, set the type of analog input and output channels and display the collected analog signals.

6. The signal transceiver device for analog circuit maintenance according to claim 1, characterized in that: The left and right ends of the touch screen (4) are fixedly connected to L-shaped plates (5); the middle of the inner outside of the shell (1) is slidably connected to a pull rod (7); the outer top of the pull rod (7) is fixedly connected to a pull ring (8); the outer side of one end of the pull rod (7) away from the pull ring (8) is fixedly connected to a fixed plate (15); the outer end surface of the fixed plate (15) is fixedly connected to a spring sheet (16); the end of the spring sheet (16) away from the fixed plate (15) is fixedly connected to the inner outside of the sleeve plate (6); the lower inner middle of the L-shaped plate (5) is slidably connected to the inner top of the pull rod (7).

7. The signal transceiver device for simulating circuit maintenance according to claim 6, characterized in that: The sleeve plate (6) is hollow inside, and a slot is provided on the top of the sleeve plate (6) from front to back, and the shape of the slot on the top of the sleeve plate (6) matches the shape of the cross-sectional surface of the bottom of the L-shaped plate (5). A circular through hole is provided near the middle of the bottom of the L-shaped plate (5), and the diameter and position of the through hole provided on the L-shaped plate (5) match the diameter and position of the cross-sectional surface of the inner top of the pull rod (7).

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