Control system suitable for fan coil of museum

Abstract

The utility model discloses a control system suitable for a fan coil of a museum. The control system comprises a controller and a water leakage detection device. The controller comprises a data processing module, a liquid crystal driving module, a temperature detection module, a water leakage detection module and a communication module; a water level sensor in the water leakage detection module detects the water level of a fan coil water tray and outputs a low-frequency analog signal, a low-pass amplification circuit amplifies the low-frequency analog signal, and an analog-to-digital conversion circuit converts the input analog signal into a digital signal and transmits the digital signal to the data processing module; the data processing module carries out data processing and analysis on the digital signal and feeds back information to the liquid crystal display screen; if the fan coil leaks water, a user is reminded through the liquid crystal display screen; the data processing module sends an instruction to close the valve, so that water in the water supply pipe of the air conditioning system does not enter the fan coil to circulate, the server actively pushes alarm information to a manager, and the manager can conveniently control and respond to the water leakage condition of the fan coil of the museum in real time.

Description

Technical Field

[0001] The utility model belongs to the technical field of central air-conditioning fan coil control, and in particular relates to a control system suitable for museum fan coils. Background Art

[0002] Museums are important places for the preservation of cultural relics, cultural education and scientific research. Cultural relics are the basis of all museum activities. Protecting cultural relics is the key task of museums. The quality of the environment directly affects the life of cultural relics collections. Therefore, controlling and improving the museum's cultural relic preservation environment is an important part of the museum's work and the core of "preventive protection". The temperature and humidity, air pollutants, noise, micro-vibrations, and life damage in the museum's cultural relic preservation sites need to be strictly controlled.

[0003] In recent years, central air-conditioning systems have played a huge role in ensuring constant temperature and humidity in museums' cultural relics preservation sites. In the past two years, in response to the call for energy conservation and consumption reduction, museums' central air-conditioning systems have also gradually undergone energy-saving transformations, connected to the Internet of Things technology, and realized remote monitoring of the central air-conditioning system from the host to the terminal. However, the problem of water leakage in the fan coil units at the air-conditioning terminal has not been effectively solved. Museum air-conditioning fan coil units are often installed on suspended ceilings. If the condensation water pipe of the fan coil unit is not smooth or blocked, causing condensation water to overflow and drip from the suspended ceiling, it will be discovered by museum staff. This is passive and can easily cause damage to cultural relics.

[0004] In view of the above technical problems, as technicians in this field, the technical problem that needs to be solved urgently is to design a control system suitable for museum fan coil units, the purpose of which is to solve the problem of damage to indoor items caused by failure to discover leakage in time during the operation of air-conditioning equipment. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, this patent application discloses a control system suitable for museum fan coil units. The control system combines a controller with a sensor to effectively monitor the operation of the air conditioning inside the museum, avoiding the technical problem of undetectable condensation water overflow in the background technology.

[0006] In order to achieve the above technical purpose, the utility model adopts the following scheme:

[0007] A control system suitable for a fan coil unit in a museum, comprising a controller and a water leakage detection device; the controller is installed near a switch on a wall of the museum; the water leakage detection device comprises a water level sensor, a buckle fixing device and a waterproof wire, the water leakage detection device is installed near a drain outlet of a water tray of the fan coil unit, and the controller and the water leakage detection device are used to transmit data via the waterproof wire; the water leakage detection device is installed near a condensed water drain outlet of a water tray of the fan coil unit, and is used to detect the water level change of condensed water in the water tray of the fan coil unit, and further infer whether the drain outlet is blocked or whether condensed water overflows and leaks.

[0008] The controller includes a data processing module, a key processing module, a liquid crystal drive module, a temperature detection module, a water leakage detection module, a power processing module and a communication module. The key processing module is connected to the data processing module via an I / O port, the liquid crystal drive module is connected to the data processing module via an SPI communication mode, the communication module is connected to the data processing module via a serial communication mode, and the power processing module converts the AC-220V power supply into DC-5V and DC-24V, provides a DC-5V power supply for the controller, and provides a DC-24V power supply for the water leakage detection device;

[0009] The water leakage detection module comprises a water level sensor, a low-pass amplifier circuit, and an analog-to-digital conversion circuit, wherein the water level sensor detects the water level of the fan coil water tray and outputs a low-frequency analog signal, the low-pass amplifier circuit filters and amplifies the low-frequency analog signal, and the analog-to-digital conversion circuit converts the input analog signal into a digital signal and transmits it to the data processing module; the data processing module processes and analyzes the digital signal and feeds back the fan coil leakage information on the liquid crystal display screen; if the fan coil unit leaks, the liquid crystal display screen is highlighted, and a flashing "ERROR" character appears in the lower left corner of the display screen to remind the user that the fan coil unit is leaking; at the same time, the data processing module issues an instruction to close the valve so that the water in the water supply pipe of the air-conditioning system no longer enters the fan coil unit for circulation; and the data processing module uploads the data to the server. If the fan coil unit leaks, the server actively pushes the alarm information to the management personnel, so that the management personnel can control the museum fan coil unit leakage in real time, respond in time, quickly locate and repair it.

[0010] The controller includes an upper shell and a lower shell, wherein a liquid crystal display is embedded and connected to one side of the surface of the upper shell, a touch button is installed on one side of the surface of the upper shell, an acrylic surface sticker is bonded to one side of the surface of the upper shell, a card slot for snap-connecting the upper shell and the lower shell is opened on one side of the surface of the upper shell, and a temperature measuring hole is opened at one end of the card slot; a mounting hole is opened on one side of the surface of the lower shell, a ventilation hole is opened on one side of the surface of the lower shell, a wiring port is installed on one side of the surface of the lower shell, and a wiring port description surface sticker is bonded to one side of the surface of the lower shell.

[0011] The liquid crystal display screen mainly displays the temperature in the museum, the set temperature, the current mode, the current wind speed, the valve switch status, the current time, and the water leakage information.

[0012] The touch buttons are mainly used for controller power on / off, mode, wind speed, and temperature settings;

[0013] The ventilation holes are mainly used to ventilate and dissipate heat for internal electronic components;

[0014] The mounting holes are standard 86-box mounting holes;

[0015] The wiring port is used to connect a power source, a water leakage control device, a fan coil unit and a valve.

[0016] The communication module is used to communicate with the server, upload the collected fan coil unit water leakage information, fan coil unit operating status, and temperature information to the server, and realize real-time monitoring of the fan coil unit water leakage through the server.

[0017] The LCD driving module is used to drive and display the fan coil unit leakage information, fan coil unit wind speed, valve switch, indoor temperature, and set temperature. The fan coil unit leakage information is displayed by brightening the LCD screen brightness, and the LCD screen displays the character "ERROR" and flashes to remind the user that the fan coil unit is leaking.

[0018] The snap-on fixing device comprises a U-shaped pipe clamp bracket, a large flat head cross flat head Cantonese screw, and a nut, which is installed on the side wall of the fan coil water tray near the drain outlet and is used to fix the water level sensor.

[0019] The size of the U-shaped pipe clamp bracket is φ27mm, and mounting holes are opened on both sides of the surface of the U-shaped pipe clamp bracket; the size of the mounting holes is hole length 8mm / hole width 12mm.

[0020] The size of the large flat head cross flat head Cantonese screw is M6*8.

[0021] The nut size is M6.

[0022] The U-shaped pipe clamp bracket and the side wall of the fan coil water tray are fixed on the side wall of the fan coil dehydration tray by M6 large flat head cross flat head Cantonese screws passing through the U-shaped pipe clamp bracket mounting hole and the fan coil dehydration tray side wall mounting hole, and then tightened and fixed with M6 nuts.

[0023] The water level sensor comprises a water level probe and a waterproof wire, and is fixed near the drain outlet on the side wall of the fan coil water tray through a snap-on fixing device to detect water leakage of the fan coil.

[0024] A pressure-inducing hole is provided on the bottom side of the surface of the water level probe, and the water level probe is installed on the side wall at a distance of 2 / 3 from the bottom of the water tray, near the drain outlet.

[0025] The waterproof wire includes a DC-24V power line, a signal line, and a common line, which is connected to the controller wiring port to provide a DC 24V working voltage for the water level sensor and transmit a water level sensor detection signal to the controller.

[0026] The utility model provides a controller system for a museum fan coil unit, which has the following beneficial effects: the controller comprises a controller and a water leakage detection device; the two transmit data through a waterproof wire; the controller comprises a data processing module, a key processing module, a liquid crystal drive module, a temperature detection module, a water leakage detection module, a power processing module and a communication module; the water leakage detection module comprises a water level sensor, a low-pass amplifier circuit and an analog-to-digital conversion circuit, wherein the water level sensor detects the water level of a water tray of the fan coil unit and outputs a low-frequency analog signal, the low-pass amplifier circuit filters and amplifies the low-frequency analog signal, and the analog-to-digital conversion circuit converts the input analog signal into a digital signal and transmits it to the data processing module; the data processing module processes and analyzes the digital signal, and feeds back the water leakage information of the fan coil unit on a liquid crystal display screen; if the fan coil unit leaks, the user is reminded through the liquid crystal display screen; at the same time, the data processing module issues an instruction to close the valve, so that the water in the water supply pipe of the air-conditioning system no longer enters the fan coil unit for circulation, and the server actively pushes the alarm information to the management personnel, so that the management personnel can control the water leakage of the museum fan coil unit in real time, respond in time, locate quickly and repair it in time.

[0027] The utility model can effectively detect water leakage of fan coil units in museums. Through dual monitoring by the local controller and the server host computer, it is convenient for early warning notification, rapid positioning and maintenance response of water leakage of fan coil units in museums, so as to avoid damage to museum cultural relics and collections. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the use principle of the utility model;

[0029] Figure 2 It is a schematic diagram of the three-dimensional structure of the front side of the controller;

[0030] Figure 3 This is a schematic diagram of the three-dimensional structure of the rear side of the controller

[0031] Figure 4 It is a schematic diagram of the structure of the upper shell of the controller;

[0032] Figure 5 It is a schematic diagram of the structure of the lower housing of the controller;

[0033] Figure 6 It is a schematic diagram of the installation structure of the water leakage detection device;

[0034] Figure 7 This is a schematic diagram of the fixed structure of the water level sensor;

[0035] Figure 8 It is a schematic diagram of the buckle structure;

[0036] Fig. 9 This is a schematic diagram showing the internal components of the controller;

[0037] Fig.10 This is the internal composition diagram of the water leakage detection module.

[0038] In the accompanying drawings, 1, controller, 11, data processing module, 12, power processing module, 13, temperature detection module, 14, water leakage detection module, 15, key processing module, 16, LCD drive module, 17, communication module, 18, server;

[0039] 2. Water level sensor, 21. Water level probe, 22. Waterproof wire, 23. Low-pass amplifier circuit, 24. Analog-to-digital conversion circuit, 3. Upper shell, 31. LCD display, 32. Touch button, 33. Card slot, 34. Temperature measuring hole, 4. Lower shell, 41. Mounting hole, 42. Ventilation hole, 43. Wiring port, 44. Wiring port description sticker, 5. Water tray, 51. Sinking area, 52. Drain, 6. Buckle fixing device, 7. Fan coil unit, 8. Air duct, 81. Air outlet, 82. Return air outlet. DETAILED DESCRIPTION

[0040] The utility model is described in detail below through specific embodiments, but it should be pointed out that the following specific implementation methods do not technically limit the technical solution. Under the guidance of the following technical solution, those skilled in the art can also make further technical extensions. The protection scope of this patent application shall be subject to the claims.

[0041] A control system suitable for a museum fan coil unit, the specific structure of which is as follows: it includes a controller 1 and a water leakage detection device; Figure 1As shown, the controller 1 is installed near the wall switch of the museum, which is convenient for personnel to observe and operate; when the water leakage detection device is installed and fixed, the fan coil 7 is fixed on the roof, and the fan coil 7 is connected to the air outlet 81 and the return air outlet 82 through the air duct 8. On this basis, the water leakage detection device includes a water level sensor 2, a buckle fixing device 6 and a waterproof wire 22. The water leakage detection device is installed near the drain outlet 52 of the water tray 5 of the fan coil 7, and is used to detect the water level change of the condensed water in the fan coil water tray, and then infer whether the drain outlet is blocked and the condensed water overflows and leaks. The controller 1 is connected to the water level probe 21 in the water level sensor 2 through the waterproof wire 22 and transmits data. In actual installation, the buckle fixing device 6 includes a U-shaped pipe clamp bracket, a large flat head cross flat head Cantonese screw, and a nut, which is installed on the side wall of the fan coil water tray near the drain outlet to fix the water level sensor. In a specific embodiment, the size of the U-shaped pipe clamp bracket is φ27mm, and mounting holes are provided on both sides of the surface of the U-shaped pipe clamp bracket; the size of the mounting holes is 8mm in length / 12mm in width. The size of the large flat head cross flat head Cantonese screw is M6*8, and the size of the nut is M6. The U-shaped pipe clamp bracket and the side wall of the water tray 5 on the fan coil 7 are connected by the M6 ​​large flat head cross flat head Cantonese screw through the mounting hole of the U-shaped pipe clamp bracket and the mounting hole of the side wall of the dehydration tray 5 on the fan coil 7, and then tightened and fixed with the M6 ​​nut, and installed on the side wall of the dehydration tray 5 on the fan coil 7.

[0042] like Fig. 9 As shown, the controller 1 includes a data processing module 11, a key processing module 15, a liquid crystal drive module 16, a temperature detection module 13, a water leakage detection module 14, a power processing module 12 and a communication module 17. The key processing module 15 is connected to the data processing module 11 through an I / O port, the liquid crystal drive module 16 is connected to the data processing module 11 through an SPI communication method, and the communication module 17 is connected to the data processing module 11 through a serial port communication method. The power processing module 12 converts AC-220V power into DC-5V and DC-24V, provides DC-5V power for the controller, and provides DC-24V power for the water leakage detection device.

[0043] like Fig.10As shown, the water leakage detection module 14 includes a water level sensor 2, a low-pass amplifier circuit 22, and an analog-to-digital conversion circuit 23, wherein the water level sensor 2 detects the water level of the water tray 5 in the fan coil unit 7 and outputs a low-frequency analog signal, the low-pass amplifier circuit 23 filters and amplifies the low-frequency analog signal, and the analog-to-digital conversion circuit 24 converts the input analog signal into a digital signal and transmits it to the data processing module 11; the data processing module 11 processes and analyzes the digital signal and feeds back the fan coil unit leakage information on the LCD display; if the fan If the fan coil 7 is leaking, the LCD screen 31 will be highlighted and a flashing "ERROR" character will appear in the lower left corner of the screen to remind the user that the fan coil 7 is leaking. At the same time, the data processing module 11 will issue a command to close the valve so that the water in the water supply pipe of the air-conditioning system will no longer circulate in the fan coil 7. The data processing module 11 will upload the data to the server 18. If the fan coil 7 is leaking, the server 18 will actively push the alarm information to the management personnel, so that the management personnel can have real-time control, timely response, rapid positioning and repair of the museum fan coil leakage.

[0044] The controller 1 includes an upper shell 3 and a lower shell 4, wherein a liquid crystal display screen 31 is embedded and connected to one side of the surface of the upper shell 3, a touch button 32 is installed on one side of the surface of the upper shell 3, an acrylic surface sticker is bonded to one side of the surface of the upper shell 3, a card slot 33 for snap-connecting the upper shell and the lower shell is opened on one side of the surface of the upper shell, and a temperature measuring hole 34 is opened at one end of the card slot 33; a mounting hole 41 is opened on one side of the surface of the lower shell 4, and this mounting hole 41 is a standard 86 box mounting hole, which can be fixed to the wall through the mounting hole 41; a ventilation hole 42 is opened on one side of the surface of the lower shell 4, a wiring port 43 is installed on one side of the surface of the lower shell 4, and a wiring port description surface sticker 44 is bonded to one side of the surface of the lower shell 4. Through this structure, the controller 1 can be quickly assembled and various functions can be realized.

[0045] Further functional description, the LCD display screen 31 mainly displays the temperature in the museum, the set temperature, the current mode, the current wind speed, the valve switch status, the current time, and the water leakage information, so that the user can realize intuitive indoor data observation.

[0046] The touch buttons 32 are mainly used for adjusting and setting parameters such as controller power on / off, mode, wind speed, temperature, etc.

[0047] The ventilation holes 42 are mainly used for ventilation and heat dissipation of the internal electronic components; they can reduce the internal operating temperature of the controller 1 and ensure the smooth operation of the controller.

[0048] The connection port 43 is used to connect a power source, a water leakage detection module 14, a fan coil unit 7 and a valve.

[0049] The communication module 17 is used to communicate with the server 18, upload the collected water leakage information of the fan coil unit 7, the operating status of the fan coil unit 7, and the temperature information to the server 18, and the water leakage of the fan coil unit 7 is monitored in real time through the server 18.

[0050] The LCD drive module 16 is used to drive and display the water leakage information of the fan coil unit, the wind speed of the fan coil unit, the valve switch, the indoor temperature, and the set temperature. The water leakage information of the fan coil unit 7 is displayed by brightening the LCD screen brightness, and the LCD screen displays the character "ERROR" and flashes to remind the user that the fan coil unit is leaking.

[0051] A pressure-inducing hole is provided on the bottom side of the surface of the water level probe 21. The best fixing method is: the water level probe is installed on the side wall at 2 / 3 of the distance from the bottom of the water tray, near the drain outlet.

[0052] The waterproof wire 22 not only includes the wire on the fixed water level probe 21, but also includes a DC-24V power line, a signal line, and a common line, which is connected to the controller wiring port to provide a DC 24V working voltage for the water level sensor and transmit the water level sensor detection signal to the controller.

[0053] The utility model provides a controller system for a museum fan coil unit. When the system is in operation, the controller 1 cooperates with a water leakage detection device; the two transmit data through a waterproof wire 22; a water level sensor 2 detects the water level of a water tray 5 at the bottom of the fan coil unit 7, and outputs a low-frequency analog signal; a low-pass amplifier circuit 23 filters and amplifies the low-frequency analog signal; an analog-to-digital conversion circuit converts the input analog signal into a digital signal and transmits it to a data processing module; a data processing module 11 processes and analyzes the digital signal, and feeds back the water leakage information of the fan coil unit on a liquid crystal display screen 31; if the fan coil unit 5 leaks, the user is reminded through the liquid crystal display screen 31; at the same time, the data processing module 11 issues an instruction to close the valve, so that the water in the water supply pipe of the air-conditioning system no longer enters the fan coil unit 5 for circulation, and a server 18 actively pushes the alarm information to the management personnel, so that the management personnel can control the water leakage of the museum fan coil unit in real time, respond in time, quickly locate and repair it.

[0054] In summary, the utility model can effectively detect water leakage of fan coil units in museums. Through dual monitoring by the local controller and the server host computer, it is convenient for early warning notification, rapid positioning and maintenance response of water leakage of fan coil units in museums, so as to avoid damage to the museum's cultural relics and collections.

Claims

1. A control system suitable for museum fan coil units, characterized in that: It includes a controller and a water leakage detection device; the controller is installed near the wall switch of the museum; the water leakage detection device includes a water level sensor, a buckle fixing device and a waterproof wire, the water leakage detection device is arranged near the drain outlet of the fan coil water tray, and the controller is connected to the water leakage detection device through a wire; The controller includes a data processing module, a key processing module, a liquid crystal drive module, a temperature detection module, a water leakage detection module, a power processing module and a communication module. The key processing module is connected to the data processing module, the liquid crystal drive module is connected to the data processing module, the communication module is connected to the data processing module via a serial communication mode, and the power processing module provides power for the controller and the water leakage detection device. The water leakage detection module includes a water level sensor, a low-pass amplifier circuit, and an analog-to-digital conversion circuit; The controller includes an upper shell and a lower shell, wherein the upper shell is embedded with a liquid crystal display, touch buttons and an acrylic surface sticker; a card slot is provided on one side of the surface of the upper shell, and a temperature measuring hole is provided at one end of the card slot; a mounting hole, a ventilation hole and a wiring port are provided on one side of the surface of the lower shell.

2. A control system suitable for a museum fan coil unit as claimed in claim 1, characterized in that: The water level sensor comprises a water level probe and a waterproof wire, and the water level sensor is fixed near the drain outlet on the side wall of the fan coil water tray.

3. A control system suitable for a museum fan coil unit as claimed in claim 2, characterized in that: A pressure-inducing hole is provided on the bottom side of the surface of the water level probe, and the water level probe is installed on the side wall at a distance of 2 / 3 from the bottom of the water tray, near the drain outlet.

4. A control system suitable for a museum fan coil unit as claimed in claim 1, characterized in that: The waterproof wire includes a DC-24V power line, a signal line, and a common line, which are connected to the controller wiring port.

Images