CN209103173U - Indoor switch cabinet temperature and humidity monitoring and automatic adjustment system - Google Patents

Abstract

Indoor switch cabinet temperature and humidity monitoring and automatic adjustment system, the system consists of single chip microcomputer, temperature sensor group, humidity sensor group, signal conversion unit A, signal conversion unit B, parameter setting panel, reset button, start button, stop button, display unit, It consists of electric heating plate, relay A, refrigeration device, relay B, dehumidification device, relay C, humidification device and relay D. High-precision temperature and humidity sensors are used to monitor the temperature and appropriateness of indoor switch cabinets in real time. Pre-warning or alarm is given when the set value is in the range, and the temperature and humidity adjustment device is automatically activated to ensure that the temperature and humidity of the indoor switch cabinet are within the safe value range. The system has simple structure, good stability, fast response speed and strong anti-interference ability. It is of great significance to improve the safety and stability of indoor switchgear.

Description

Indoor switch cabinet temperature and humidity monitoring and automatic adjustment system

technical field

The utility model relates to an indoor switch cabinet monitoring technology, in particular to an indoor switch cabinet temperature and humidity monitoring and automatic adjustment system.

Background technique

The switch cabinet is the main switch in the indoor distribution power system, which has the dual functions of control and protection. The abnormal operation of the indoor switchgear must be dealt with in time, otherwise it will lead to problems such as reduced insulation, high temperature rise, and even electrical accidents that endanger safe production. The long-term operation of the switchgear in harsh environments such as humidity, high temperature, and low temperature will cause corrosion of the insulating materials, and it is easy to reduce the insulation level, which brings hidden dangers to safe production. The existing indoor switchgear monitoring system can monitor conventional parameters such as voltage, current, temperature, etc., but cannot monitor the humidity in the switchgear, nor can it realize automatic humidity adjustment and early warning under abnormal humidity conditions.

Utility model content

Purpose of the utility model:

The utility model provides an indoor switch cabinet temperature and humidity monitoring and automatic adjustment system and monitoring and adjustment method, which aim to solve the problems existing in the past.

Technical solutions:

The indoor switch cabinet temperature and humidity monitoring and automatic adjustment system consists of single chip microcomputer, temperature sensor group, humidity sensor group, signal conversion unit A, signal conversion unit B, parameter setting panel, reset button, start button, stop button, display unit, electric heating Board, relay A, refrigeration device, relay B, dehumidification device, relay C, humidification device, and relay D. The measurement end of the temperature sensor group (multiple temperature sensors) is set at the temperature test point of the indoor switch cabinet, and the temperature sensor The signal output end of the group is connected with the signal input end of the signal conversion unit A, the signal output end of the signal conversion unit A is connected with the signal input end of the single-chip microcomputer, and the measurement end of the humidity sensor group (multiple humidity sensors) is set indoors The humidity test point of the switch cabinet, the signal output end of the humidity sensor group is connected with the signal input end of the signal conversion unit B, the signal output end of the signal conversion unit B is connected with the signal input end of the single-chip microcomputer, and the parameter setting panel (touch screen) The signal output terminal is connected with the parameter signal input terminal of the single-chip microcomputer, the signal output terminal of the reset button is connected with the reset signal input terminal of the single-chip microcomputer, the signal output terminal of the start button is connected with the starting signal input terminal of the single-chip microcomputer, and the signal output terminal of the stop button is connected. The terminal is connected with the stop signal input terminal of the single-chip microcomputer, the signal input terminal of the display unit is connected with the display driving signal output terminal of the single-chip microcomputer, and the control signal input terminal of the electric heating plate is connected with the heating control signal output terminal of the single-chip microcomputer through the relay A. The control signal input end of the refrigeration device is connected to the refrigeration control signal output end of the single-chip microcomputer through the relay B; the control signal input end of the dehumidification device is connected to the dehumidification adjustment control signal output end of the single-chip microcomputer through the relay C; It is connected with the humidification adjustment control signal output end of the single-chip microcomputer through the relay D.

The display screen (it can also be a handheld display screen) is temporarily fixed by a temporary fixing device (temporarily fixed on the wall or the outer surface of the power distribution switch cabinet, so that it can be observed at any time, and the position can be adjusted at will to adapt to different scenarios. !);

The temporary fixing device includes a transverse plate (111), an external thread vertical rod (222) and a "T"-shaped pressure plate;

There are two externally threaded vertical rods (222), and the two externally threaded vertical rods (222) pass through both ends of the horizontal plate (111) (the two externally threaded vertical rods (222) pass through both ends of the horizontal plate (111). a through hole, and the diameter of the through hole is slightly larger than the diameter of the externally threaded vertical rod (222)), so that the transverse plate (111) can move up and down along the axial direction of the externally threaded vertical rod (222);

The "T"-shaped pressure plate includes a pressure plate vertical rod (333-1) and a pressure plate horizontal plate (333-2). -2) form "T" shape structure;

The lower end of the horizontal plate (111) is provided with a vertical pipe (111-1) and two vertical top rods (111-2), and the two vertical top rods (111-2) are located on both sides of the vertical pipe (111-1). The upper end of the rod (333-1) extends into the riser (111-1) from the opening of the lower end of the standpipe (111-1), and the pressure plate upright rod (333-1) can be axially relative to the standpipe (111-1) The telescopic action (the pressure plate vertical rod (333-1) will not be completely separated from the riser (111-1), this method belongs to the prior art, for example, a diameter larger than the pressure plate can be made on the upper end of the pressure plate vertical rod (333-1). The cap of the upright rod (333-1, the diameter of the cap is adapted to the inner diameter of the standpipe (111-1), and then make a fixing cap at the opening at the bottom of the standpipe (111-1), and open a cap in the center of the cap to stand up with the pressure plate. The through hole of the rod (333-1) is suitable for the diameter, for the pressure plate vertical rod (333-1) to pass through, so that the pressure plate vertical rod will not fall off completely!); the pressure plate vertical rod (333-1) is covered with a spring (333-3), the upper end of the spring (333-3) touches the vertical pipe (111-1), the lower end of the spring (333-3) touches the pressure plate horizontal plate (333-2); the pressure plate horizontal plate (333-2) ) is provided with a universal ball head (333-6) (also called universal wheel, universal ball, universal ball bearing, etc., which belong to existing components), and both ends of the pressure plate transverse plate (333-2) are provided with A through hole, the lower pressure rod (333-4) passes through the two through holes of the horizontal plate of the pressure plate (333-2), and can move up and down in the through hole; (the direct connection of the lower pressure rod (333-4) It can be adapted to the diameter of the through hole, as long as it is just enough that the lower pressure rod (333-4) can move!)

The two vertical ejector rods (111-2) correspond to the upper ends of the two downward pressure rods (333-4) respectively and maintain a gap with the upper ends of the two downward pressure rods (333-4);

An adjusting nut (222-1) is arranged on the upper part of the externally threaded vertical rod (222), and the adjusting nut (222-1) is provided on the upper part of the horizontal plate (111); the lower end of the externally threaded vertical rod (222) is provided with a suction cup (222-1). 222-2); (use existing suction cups)

When using, attach the suction cup (222-2) to the ground, then place the display frame (1-1) on the bottom of the universal ball head (333-6), and screw the adjusting nut (222-1) to make the horizontal (111) Move down and compress the spring (333-3) to give a preliminary preload pressure to the display frame (1-1). At this time, due to the action of the universal ball head (333-6), the display frame ( The position of 1-1) can still be fine-tuned, such as the angle and so on! At this time, the two upright rods (111-2) and the two down-pressing rods (333-4) are not in contact, keep a distance! Fine-tune the position of the display frame (1-1) as required, and then continue to screw the adjusting nut (222-1), so that the two vertical ejector rods (111-2) continue to move down and stand against the two down-pressing rods ( 333-4) down until the lower ends of the two lower pressure rods (333-4) press against the display frame (1-1) to complete the positioning. (At this time, due to the continuous downward movement of the horizontal plate (111), the pressure of the universal ball head (333-6) on the upper surface of the display frame (1-1) continues to increase, forming the first stage of pressing, and Due to the action of the two vertical mandrels (111-2), the second-stage compression is formed, and the positioning of the lightning impulse withstand voltage generator is completed to prevent its movement or dumping from affecting the implementation process or equipment damage! Turn the adjusting nut (222-1) to Xuan, and as the spring (333-3) resets and moves upward against the horizontal plate (111), the two vertical ejector rods (111-2) gradually leave the two downward pressure rods (333- 4), contact the pressing force until the spring (333-3) fully returns to the initial state, and the two-stage pressing force is released. 3) It will also pull the two downward pressure rods (333-4) to move up and leave the display frame (1-1).

A pulling rope (111-3) is connected between the erecting rod (111-2) and the pressing rod (333-4).

The side walls at the upper and lower ends of the pressing rod (333-4) are respectively provided with a clamping block (333-5) for preventing the pressing rod (333-4) from falling off the horizontal plate (333-2).

Description of the working process of the indoor switch cabinet temperature and humidity monitoring and automatic adjustment system: After the system is powered on, each function chip is initialized, and the temperature and humidity parameters of the indoor switch cabinet are set for normal operation, abnormal operation, and failure. Wait for the start command input, and receive the start After the instruction, the temperature sensor group and the humidity sensor group collect the temperature and humidity signals of the indoor switch cabinet, and then feed them back to the single-chip microcomputer after isolation and amplification processing by the signal conversion unit A and signal conversion unit B. The single-chip microcomputer compares the calculated temperature and humidity values with the set parameters. For comparison, the temperature data, humidity data and indoor switchgear working status (normal, abnormal, fault) are displayed on the display unit. In the case of equipment abnormality, the single-chip microcomputer sends a control signal combined with the fault type to start the temperature and humidity adjustment device through the relay. (Starting the electric heating plate at low temperature, starting the refrigeration device at high temperature, starting the dehumidifying device when the humidity is high, and starting the humidifying device when the humidity is low) to realize online adjustment of temperature and humidity.

In order to eliminate the influence of the interference signal on the system, the single-chip microcomputer adopts the combination of hardware filtering and software to eliminate the interference data in the process of processing temperature and humidity data. The software adopts the data difference comparison method, that is, the absolute value P of the difference between the Nth data and the (N-1) data, the average value of the first 3 valid data of N and the average value of the first 3 valid data of (N-3) The difference Q of , such as P<3Q, is the true value, otherwise it is the interference data.

Advantage effect:

The utility model provides a system and method for monitoring and automatically adjusting the temperature and humidity of an indoor switch cabinet. A high-precision temperature and humidity sensor is used to monitor the temperature and appropriateness of the indoor switch cabinet in real time. Early warning or alarm, and automatically start the temperature and humidity adjustment device to ensure that the temperature and humidity values of the indoor switch cabinet are within the safe value range. The safety and stability of the internal switchgear are of great significance.

Description of drawings

The present utility model will be further described below with reference to the accompanying drawings and specific embodiments.

Figure 1. Structure diagram of indoor switch cabinet temperature and humidity monitoring and automatic adjustment system;

Figure 2 data difference method flow chart;

FIG. 3 is a schematic diagram of a temporary fixing device.

Detailed ways

The indoor switch cabinet temperature and humidity monitoring and automatic adjustment system is characterized in that: the system includes a single chip microcomputer, a temperature sensor group, a humidity sensor group, a signal conversion unit A, a signal conversion unit B, a parameter setting panel, a reset button, a start button, a stop button Button, display unit, electric heating plate, relay A, refrigeration device, relay B, dehumidification device, relay C, humidification device and relay D;

The measurement end of the temperature sensor group (multiple temperature sensors) is set at the temperature test point of the indoor switch cabinet, the signal output end of the temperature sensor group is connected with the signal input end of the signal conversion unit A, and the signal output end of the signal conversion unit A is connected. The terminal is connected to the signal input terminal of the single-chip microcomputer, the measurement terminal of the humidity sensor group (multiple humidity sensors) is set at the humidity test point of the indoor switch cabinet, and the signal output terminal of the humidity sensor group is connected to the signal input terminal of the signal conversion unit B. The signal output end of the signal conversion unit B is connected with the signal input end of the single-chip microcomputer, the signal output end of the parameter setting panel (touch screen) is connected with the parameter signal input end of the single-chip microcomputer, and the signal output end of the reset button is connected with the reset signal of the single-chip microcomputer. The input end is connected, the signal output end of the start button is connected with the start signal input end of the microcontroller, the signal output end of the stop button is connected with the stop signal input end of the microcontroller, the signal input end of the display unit is connected with the display drive signal output of the microcontroller The control signal input end of the electric heating plate is connected to the heating control signal output end of the single-chip microcomputer through the relay A, and the control signal input end of the refrigeration device is connected to the cooling control signal output end of the single-chip microcomputer through the relay B. The control signal input terminal is connected to the dehumidification adjustment control signal output terminal of the single-chip microcomputer through the relay C, and the control signal input terminal of the humidification device is connected to the humidification adjustment control signal output terminal of the single-chip microcomputer through the relay D.

As shown in Figure 3, the display screen (which can also be a handheld display screen) is temporarily fixed by a temporary fixing device (temporarily fixed on the wall or the outer surface of the power distribution switch cabinet, so that it can be observed at any time, and the position can also be adjusted at will. , to suit different scenarios!);

The temporary fixing device includes a transverse plate (111), an external thread vertical rod (222) and a "T"-shaped pressure plate;

There are two externally threaded vertical rods (222), and the two externally threaded vertical rods (222) pass through both ends of the horizontal plate (111) (the two externally threaded vertical rods (222) pass through both ends of the horizontal plate (111). a through hole, and the diameter of the through hole is slightly larger than the diameter of the externally threaded vertical rod (222)), so that the transverse plate (111) can move up and down along the axial direction of the externally threaded vertical rod (222);

The "T"-shaped pressure plate includes a pressure plate vertical rod (333-1) and a pressure plate horizontal plate (333-2). -2) form "T" shape structure;

The lower end of the horizontal plate (111) is provided with a vertical pipe (111-1) and two vertical top rods (111-2), and the two vertical top rods (111-2) are located on both sides of the vertical pipe (111-1). The upper end of the rod (333-1) extends into the riser (111-1) from the opening of the lower end of the standpipe (111-1), and the pressure plate upright rod (333-1) can be axially relative to the standpipe (111-1) The telescopic action (the pressure plate vertical rod (333-1) will not be completely separated from the riser (111-1), this method belongs to the prior art, for example, a diameter larger than the pressure plate can be made on the upper end of the pressure plate vertical rod (333-1). The cap of the upright rod (333-1, the diameter of the cap is adapted to the inner diameter of the standpipe (111-1), and then make a fixing cap at the opening at the bottom of the standpipe (111-1), and open a cap in the center of the cap to stand up with the pressure plate. The through hole of the rod (333-1) is suitable for the diameter, for the pressure plate vertical rod (333-1) to pass through, so that the pressure plate vertical rod will not fall off completely!); the pressure plate vertical rod (333-1) is covered with a spring (333-3), the upper end of the spring (333-3) touches the vertical pipe (111-1), the lower end of the spring (333-3) touches the pressure plate horizontal plate (333-2); the pressure plate horizontal plate (333-2) ) is provided with a universal ball head (333-6) (also called universal wheel, universal ball, universal ball bearing, etc., which belong to existing components), and both ends of the pressure plate transverse plate (333-2) are provided with A through hole, the lower pressure rod (333-4) passes through the two through holes of the horizontal plate of the pressure plate (333-2), and can move up and down in the through hole; (the direct connection of the lower pressure rod (333-4) It can be adapted to the diameter of the through hole, as long as it is just enough that the lower pressure rod (333-4) can move!)

The two vertical ejector rods (111-2) correspond to the upper ends of the two downward pressure rods (333-4) respectively and maintain a gap with the upper ends of the two downward pressure rods (333-4);

An adjusting nut (222-1) is arranged on the upper part of the externally threaded vertical rod (222), and the adjusting nut (222-1) is provided on the upper part of the horizontal plate (111); the lower end of the externally threaded vertical rod (222) is provided with a suction cup (222-1). 222-2); (use existing suction cups)

A pulling rope (111-3) is connected between the erecting rod (111-2) and the pressing rod (333-4).

The side walls at the upper and lower ends of the pressing rod (333-4) are respectively provided with a clamping block (333-5) for preventing the pressing rod (333-4) from falling off the horizontal plate (333-2).

When using, attach the suction cup (222-2) to the ground, then place the display frame (1-1) on the bottom of the universal ball head (333-6), and screw the adjusting nut (222-1) to make the horizontal (111) Move down and compress the spring (333-3) to give a preliminary preload pressure to the display frame (1-1). At this time, due to the action of the universal ball head (333-6), the display frame ( The position of 1-1) can still be fine-tuned, such as the angle or the position of the frame, etc.! At this time, the two upright rods (111-2) and the two down-pressing rods (333-4) are not in contact, keep a distance! Fine-tune the position of the display frame (1-1) as required, and then continue to screw the adjusting nut (222-1), so that the two vertical ejector rods (111-2) continue to move down and stand against the two down-pressing rods ( 333-4) move down until the lower ends of the two lower pressure rods (333-4) press against the display frame (1-1) to complete the positioning. (At this time, due to the continuous downward movement of the horizontal plate (111), the pressure of the universal ball head (333-6) on the upper surface of the display frame (1-1) continues to increase, forming the first stage of pressing, and Due to the action of the two vertical mandrels (111-2), the second-stage compression is formed, and the positioning of the lightning impulse withstand voltage generator is completed to prevent its movement or dumping from affecting the implementation process or equipment damage! Twist the adjusting nut (222-1) toward Xuan, and as the spring (333-3) resets and moves upward against the horizontal plate (111), the two vertical ejector rods (111-2) gradually leave the two downward pressure rods (333- 4), contact the pressing force until the spring (333-3) fully returns to the initial state, and the two-stage pressing force is released. 3) It will also pull the two downward pressure levers (333-4) to move up and leave the display frame (1-1).

The monitoring and automatic adjustment method implemented by the above-mentioned indoor switch cabinet temperature and humidity monitoring and automatic adjustment system is characterized in that:

After the system is powered on, each functional chip is initialized, and the temperature and humidity parameters of the indoor switchgear during normal operation, abnormal operation, and fault are set, and the temperature and humidity parameters of the indoor switchgear are set. After the signal conversion unit A and signal conversion unit B are isolated and amplified, they are fed back to the single-chip microcomputer. The single-chip computer compares the calculated temperature and humidity values with the set parameters, and displays the temperature data, humidity data and household parameters on the display unit. Inner switch cabinet working status classification (normal, abnormal, fault) display, in the case of equipment abnormality, the single-chip microcomputer sends a control signal combined with the fault type to start the temperature and humidity adjustment device through the relay (electric heating plate when low temperature, refrigeration device when high temperature start, humidity Start the dehumidifier when the humidity is high, and start the humidifier when the humidity is low) to realize the online adjustment of temperature and humidity.

The temperature and humidity adjustment device is adjusted according to the signal, including the activation of the electric heating plate when the temperature is low, the refrigeration device when the temperature is high, the dehumidifier when the humidity is high, and the humidifier when the humidity is low.

In order to eliminate the influence of the interference signal on the system, the single-chip microcomputer adopts the combination of hardware filtering and software to eliminate the interference data in the process of processing temperature and humidity data; the software adopts the data difference comparison method, that is, the Nth data and (N-1) The absolute value P of the difference of the data, the difference Q between the average value of the first 3 valid data of N and the average value of the first 3 valid data of (N-3), if P<3Q, it is the true value, otherwise it is the interference data.

Claims (4)

1. Indoor switch cabinet temperature and humidity monitoring and automatic adjustment system, it is characterized in that: this system comprises single chip microcomputer, temperature sensor group, humidity sensor group, signal conversion unit A, signal conversion unit B, parameter setting panel, reset button, start button , stop button, display unit, electric heating plate, relay A, refrigeration device, relay B, dehumidification device, relay C, humidification device and relay D; The measurement end of the temperature sensor group is set at the temperature test point of the indoor switch cabinet, the signal output end of the temperature sensor group is connected with the signal input end of the signal conversion unit A, and the signal output end of the signal conversion unit A is connected with the signal input of the single-chip microcomputer The measurement end of the humidity sensor group is set at the humidity test point of the indoor switch cabinet, the signal output end of the humidity sensor group is connected with the signal input end of the signal conversion unit B, and the signal output end of the signal conversion unit B is connected with the single chip microcomputer. The signal input end of the parameter setting panel is connected with the parameter signal input end of the single-chip microcomputer, the signal output end of the reset button is connected with the reset signal input end of the single-chip microcomputer, and the signal output end of the start button is connected with the starting end of the single-chip microcomputer. The signal input end is connected, the signal output end of the stop button is connected with the stop signal input end of the single-chip microcomputer, the signal input end of the display unit is connected with the display driving signal output end of the single-chip microcomputer, and the control signal input end of the electric heating plate passes through the relay A. It is connected with the heating control signal output end of the single-chip microcomputer. The control signal input end of the refrigeration device is connected with the cooling control signal output end of the single-chip microcomputer through the relay B. The control signal input end of the dehumidification device is output through the relay C and the dehumidification adjustment control signal of the single-chip microcomputer. The control signal input end of the humidification device is connected with the humidification adjustment control signal output end of the single-chip microcomputer through the relay D. 2. The indoor switch cabinet temperature and humidity monitoring and automatic adjustment system according to claim 1, wherein the display unit is a display screen, and the display screen is temporarily fixed by a temporary fixing device; The temporary fixing device includes a transverse plate (111), an external thread vertical rod (222) and a "T"-shaped pressure plate; There are two externally threaded vertical rods (222), and the two externally threaded vertical rods (222) pass through both ends of the transverse plate (111), so that the transverse plate (111) can follow the axial direction of the externally threaded vertical rods (222). Moving up and down; The "T"-shaped pressure plate includes a pressure plate vertical rod (333-1) and a pressure plate horizontal plate (333-2). -2) form "T" shape structure; The lower end of the horizontal plate (111) is provided with a vertical pipe (111-1) and two vertical top rods (111-2), and the two vertical top rods (111-2) are located on both sides of the vertical pipe (111-1). The upper end of the rod (333-1) extends into the riser (111-1) from the opening of the lower end of the standpipe (111-1), and the pressure plate upright rod (333-1) can be axially relative to the standpipe (111-1) Telescopic action; a spring (333-3) is sleeved on the pressure plate vertical rod (333-1), the upper end of the spring (333-3) touches the vertical pipe (111-1), and the lower end of the spring (333-3) touches the pressure plate The horizontal plate (333-2); the bottom of the pressing plate horizontal plate (333-2) is provided with a universal ball head (333-6), and the two ends of the pressing plate horizontal plate (333-2) are respectively provided with a through hole, which can be pressed down The rod (333-4) passes through the two through holes of the cross plate (333-2) of the pressing plate, and can move up and down in the through holes; The two vertical ejector rods (111-2) correspond to the upper ends of the two downward pressure rods (333-4) respectively and maintain a gap with the upper ends of the two downward pressure rods (333-4); An adjusting nut (222-1) is arranged on the upper part of the externally threaded vertical rod (222), and the adjusting nut (222-1) is provided on the upper part of the horizontal plate (111); the lower end of the externally threaded vertical rod (222) is provided with a suction cup (222-1). 222-2); When in use, attach the suction cup (222-2) to the inside of the cabinet or the wall, then place the display frame on the bottom of the universal ball head (333-6), and screw the adjusting nut (222-1) so that the horizontal plate ( 111) Move down and compress the spring (333-3), give a preliminary pre-tightening pressure to the frame of the display screen, fine-tune the position of the frame of the display screen as needed, and then continue to twist the adjusting nut (222-1) so that the two vertical The top rod (111-2) continues to move down and moves down against the two down-pressing rods (333-4) until the lower ends of the two down-pressing rods (333-4) press against the frame of the display screen to complete the positioning. 3. The indoor switch cabinet temperature and humidity monitoring and automatic adjustment system according to claim 2, characterized in that: a pull rope (111) is connected between the vertical top rod (111-2) and the lower pressure rod (333-4). -3). 4. The indoor switch cabinet temperature and humidity monitoring and automatic adjustment system according to claim 2 or 3, characterized in that: the side walls of the upper and lower ends of the lower pressure rod (333-4) are each provided with a lower pressure prevention rod (333-4). 333-4) The clamping block (333-5) falling off from the platen cross plate (333-2).