Central air-conditioning fan coil controller system

Abstract

The utility model belongs to the technical field of fan coil control, and particularly relates to a central air conditioner fan coil controller system which comprises a power panel circuit and a control panel circuit. The power panel circuit comprises a voltage conversion module, a relay module, a power panel temperature detection module, an external expansion port module and a first flat cable connection port module; the control panel circuit comprises an MCU main control module, a display module, a temperature detection module, an illumination brightness detection module, a CO2 detection module, a key detection module, a communication module and a second flat cable connection port module; and high-quality and omnibearing control can be realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to fan -coil control technology technical field, especially related to a central air conditioning fan -coil controller system. BACKGROUND

[0002] With the requirement of energy saving and environmental protection policy and the continuous enhancement of people's energy saving and environmental protection consciousness, after the central air conditioning industry introduces the concept of internet of things in the central air conditioning system, it continuously explores the online remote monitoring from the host to the terminal of the central air conditioning, and the running condition and energy consumption of the central air conditioning system are detected in real time, and the functional requirement of the central air conditioning fan -coil terminal controller is also higher and higher.

[0003] At present, the existing temperature controller on the market is basically simple temperature control type, controls the start and stop of central air conditioning fan -coil, wind speed switching, temperature setting, temperature detection, etc., and cannot meet the requirements of high standard application scenes, such as detecting indoor CO2 concentration linkage fresh air system operation, adjusting controller screen brightness according to indoor illumination condition, etc., and the temperature detection precision of the existing fan -coil controller on the market is low, and the influence of the heat dissipation of the controller itself on temperature detection cannot be avoided. SUMMARY

[0004] The utility model provides a central air conditioning fan -coil controller system can solve the problem pointed out in the background art.

[0005] A central air conditioning fan -coil controller system, including power board circuit and control board circuit, the power board circuit includes voltage conversion module, relay module, power board temperature detection module, external expansion port module and first wire connection port module;

[0006] The voltage conversion module is used for connecting external power supply, and AC voltage is provided for the relay module, the relay module is used for controlling the attraction and disconnection of the relay, and then the speed switching of the fan -coil fan and the opening and closing of the electric valve are controlled, the power board temperature detection module is used for measuring the temperature around the power board, the external expansion port module is used for connecting power, fan -coil fan three speed, electric valve, communication to central air conditioning internet of things platform system, the first wire connection port module is used for connecting the second wire connection port module on the power board and the control board, and data transmission is carried out through the wire;

[0007] The control board circuit includes MCU main control module, display module, temperature detection module, illumination brightness detection module, CO2 detection module, key detection module, communication module, second wire connection port module;

[0008] The MCU master module is used for receiving data, performing analysis and processing on the data, and displaying corresponding data through the display module and uploading the data to the server; the temperature detection module is used for measuring indoor temperature; the light intensity detection module is used for measuring indoor light intensity; the CO2 detection module is used for measuring indoor CO2 concentration; the key detection module is used for measuring whether a key is pressed; and the communication module is used for connecting the fan coil controller and the server in communication to realize data uploading and issuing.

[0009] Preferably, the power panel temperature detection module comprises a thermistor RT1, a resistor R1, a resistor R2, a capacitor C1 and a capacitor C2, one end of the resistor R1 is connected to one end of the capacitor C2 and connected to a direct current power supply, and the other end is connected to one end of the resistor R2 and one end of the thermistor RT1; the other end of the resistor R2 is connected to one end of the capacitor C1 and a first wire connection port module, and further connected to an MCU master chip of the MCU master module through the first wire connection port module; the other end of the capacitor C1 is connected to the other end of the capacitor C2 and connected to a ground GND.

[0010] Preferably, the CO2 detection module comprises a CO2 sensor detection module IC1 and a capacitor C3, the CO2 sensor detection module IC1 has a plurality of pins, which are respectively connected to a ground GND, a direct current power supply and one end of the capacitor C3, a serial communication interface sending port and a receiving port of an MCU master chip of the MCU master module; the other end connected to the capacitor C3 is connected to the ground GND.

[0011] Preferably, the light intensity detection module comprises a photosensitive resistor D1, a photosensitive resistor D2, a capacitor C4, a capacitor C5, a resistor R3 and a resistor R4; one end of the photosensitive resistor D1 is connected to one end of the photosensitive resistor D2, and the other end is connected to one end of the capacitor C4 and a direct current power supply; the other end of the photosensitive resistor D2, the resistor R3, the resistor R4 and one end of the capacitor C5 are connected; the other end of the capacitor C4 is connected to the ground GND; the other end of the resistor R4 and the capacitor C5 is connected to the ground GND; the other end of the resistor R3 is connected to the MCU master chip of the MCU master module.

[0012] Preferably, the first wire connection port module comprises a terminal JP1, the terminal JP1 has a plurality of terminal ports, and the plurality of terminal ports are respectively connected to a direct current power supply, a ground GND, three interfaces of a relay module, the other end of the resistor R2 of the power panel temperature detection module and an external expansion port module; two ports are a positive terminal and a negative terminal of RS485 communication, and the terminal JP1 is connected to terminal ports of a second wire connection port module of the control panel circuit through a wire.

[0013] Preferably, the temperature detection module comprises a thermistor RT2, a resistor R5, a resistor R6 and a capacitor C6 and a capacitor C7, one end of the resistor R5 is connected to one end of the capacitor C7 and connected to a DC power supply, and the other end is connected to one end of the resistor R6 and one end of the thermistor RT2; the other end of the resistor R6 is connected to one end of the capacitor C6 and connected to an MCU chip of the MCU main control module; the other end of the capacitor C6 is connected to the other end of the capacitor C7 and grounded GND.

[0014] Preferably, the communication module comprises an RS485 communication chip IC2, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11 and an NPN triode Q1; the RS485 communication chip IC2 has a plurality of pins, and the plurality of pins are connected to one end of the resistor R9, a collector of the NPN triode Q1, a ground GND, one end of the resistor R10, one end of the resistor R11 and a DC power supply; the other end of the resistor R7 is connected to the DC power supply; one end of the resistor R8 is connected to a base of the NPN triode Q1, and the other end is connected to a receiving port of an MCU main control chip of the MCU main control module; the other end of the resistor R9 is connected to a sending port of the MCU main control chip of the MCU main control module; the other end of the resistor R10 is connected to the DC power supply; the other end of the resistor R11 is grounded GND; and an emitter of the NPN triode Q1 is grounded GND.

[0015] Beneficial effects: the central air conditioning fan coil controller circuit disclosed by the utility model, through increasing the power board temperature detection module on the controller power board, determining the temperature value around the power board due to working heat dissipation, reducing the temperature error of the part, and then increasing the precision of the controller circuit in detecting indoor temperature; increasing the CO2 detection module to determine the concentration of indoor CO2, transmitting data to the server, operating the fresh air system in the room through the central air conditioning internet of things platform system, improving indoor air quality, and ensuring the comfortable environment of human habitation; increasing the illumination brightness detection module to detect the illumination brightness in the room, adjusting the brightness of the controller liquid crystal screen according to the brightness, and saving energy and protecting the environment while avoiding the influence of the over-bright controller liquid crystal screen on the rest of indoor personnel at night. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a power board logic diagram of the utility model;

[0017] Figure 2 It is a control board logic diagram of the utility model;

[0018] Figure 3 It is a power board temperature detection module circuit diagram of the utility model;

[0019] Figure 4 It is a CO2 detection module circuit diagram of the utility model;

[0020] Figure 5 It is the light intensity detection module circuit diagram of the utility model;

[0021] Figure 6 It is the first wire connection port module circuit diagram of the utility model;

[0022] Figure 7 It is the indoor temperature detection module circuit diagram of the utility model;

[0023] Figure 8 It is the communication module circuit diagram of the utility model;

[0024] Mark explanation:

[0025] Mark in the drawing: voltage conversion module 1;Relay module 2;Power board temperature detection module 3;External expansion port module 4;First wire connection port module 5;MCU main control module 6;Display module 7, temperature detection module 8;Illumination intensity detection module 9;CO2 detection module 10;Key detection module 11;Communication module 12;Second wire connection port module 13. Specific implementation

[0026] Below, one specific implementation of the utility model is described in detail in combination with the drawings, but it should be understood that the protection scope of the utility model is not limited by the specific implementation.

[0027] Embodiment: as Figures 1-7 Indicated, the utility model embodiment provides a kind of central air-conditioning fan coil controller system, including power board circuit and control board circuit, power board circuit includes voltage conversion module 1, relay module 2, power board temperature detection module 3, external expansion port module 4 and first wire connection port module 5;

[0028] Voltage conversion module 1 is used to connect external power supply, provides alternating voltage for relay module 2, and the voltage of 5V or 3.3V required by other circuit modules is reduced;Relay module 2 is used to control the attraction and disconnection of relay, to control the speed switching of fan coil fan and the opening and closing of electric valve;Power board temperature detection module 3 is used to determine the temperature around power board;External expansion port module 4 is used to connect power supply, fan coil fan three speed, electric valve, communication to central air-conditioning internet of things platform system;First wire connection port module 5 is used to connect the second wire connection port module 13 on power board and control board, data transmission is carried out through wire;

[0029] The control board circuit comprises an MCU main control module 6, a display module 7, a temperature detection module 8, an illumination brightness detection module 9, a CO2 detection module 10, a key detection module 11, a communication module 12, and a second flat cable connection port module 13.

[0030] The MCU main control module 6 is used for receiving data such as power panel temperature, detected indoor temperature, CO2 concentration, brightness, key, and other data information, analyzing and processing the data, displaying the data through the display module 7, and uploading the data to a server; the temperature detection module 8 is used for measuring indoor temperature; the illumination brightness detection module 9 is used for measuring indoor brightness; the CO2 detection module 10 is used for measuring indoor CO2 concentration; the key detection module 11 is used for measuring whether a key is pressed; and the communication module 12 enables the fan coil controller and the server to be communicatively connected, thereby realizing data uploading and issuing.

[0031] Specifically, the power panel temperature detection module 3 comprises a thermistor RT1, a resistor R1, a resistor R2, a capacitor C1, and a capacitor C2; one end of the resistor R1 is connected to one end of the capacitor C2 and connected to a direct current power supply, and the other end is connected to one end of the resistor R2 and one end of the thermistor RT1; the other end of the resistor R2 is connected to one end of the capacitor C1 and the first flat cable connection port module 5, which is further connected to an MCU main control chip of the MCU main control module 6; the other end of the capacitor C1 is connected to the other end of the capacitor C2 and connected to a ground GND.

[0032] Specifically, the CO2 detection module 10 comprises a CO2 sensor detection module IC1 and a capacitor C3; the CO2 sensor detection module IC1 has a plurality of pins connected to a ground GND, a direct current power supply and one end of the capacitor C3, a sending port and a receiving port of a serial communication interface of an MCU main control chip of the MCU main control module 6; specifically, there are four pins, namely a power negative electrode - pin, a power positive electrode + pin, an ARX pin, and a BTX pin; the power negative electrode - pin is connected to the ground GND; the power positive electrode + pin is connected to 5VDC and one end of the capacitor C3; the ARX pin is connected to the first serial communication interface sending port and the receiving port of the MCU main control chip of the MCU main control module 6; the other end of the capacitor C3 is connected to the ground GND.

[0033] Specifically, the illumination brightness detection module 9 comprises a photosensitive resistor D1, a photosensitive resistor D2, a capacitor C4, a capacitor C5, a resistor R3, and a resistor R4; one end of the photosensitive resistor D1 is connected to one end of the photosensitive resistor D2, and the other end is connected to one end of the capacitor C4 and a direct current power supply; the other end of the photosensitive resistor D2, the resistor R3, the resistor R4, and one end of the capacitor C5 are connected; the other end of the capacitor C4 is connected to the ground GND; the other end of the resistor R4 and the capacitor C5 is connected and connected to the ground GND; the other end of the resistor R3 is connected to the MCU main control chip of the MCU main control module 6.

[0034] Preferably, the first wire connecting port module 5 comprises a wire terminal JP1, the wire terminal JP1 has a plurality of wire ports, specifically 9 wire ports, which are connected with the DC power supply, the ground GND, the three interfaces of the relay module 2, the other end of the resistor R2 of the power board temperature detection module 3 and the external expansion port module 4 respectively; wherein two ports are the positive and negative terminals of RS485 communication, the wire terminal JP1 is connected with the wire ports of the second wire connecting port module 13 of the control board circuit through the wire.

[0035] Specifically, the temperature detection module 8 comprises a thermistor RT2, a resistor R5, a resistor R6, a capacitor C6 and a capacitor C7, one end of the resistor R5 is connected with one end of the capacitor C7 and connected to the DC power supply, the other end is connected with one end of the resistor R6 and one end of the thermistor RT2; the other end of the resistor R6 is connected with one end of the capacitor C6 and connected to the MCU chip of the MCU main control module 6; the other end of the capacitor C6 and the other end of the capacitor C7 are connected and grounded to the GND.

[0036] Preferably, the communication module 12 comprises an RS485 communication chip IC2, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11 and a NPN triode Q1; the RS485 communication chip IC2 has a plurality of pins, specifically 8 pins, which are connected with one end of the resistor R9, the collector of the NPN triode Q1, the ground GND, one end of the resistor R10, one end of the connecting resistor R11 and the DC power supply respectively; wherein the second pin and the third pin are connected, the other end of the resistor R7 is connected with the DC power supply; one end of the resistor R8 is connected with the base of the NPN triode Q1, the other end is connected with the receiving port of the MCU main control chip of the MCU main control module 6; the other end of the resistor R9 is connected with the sending port of the MCU main control chip of the MCU main control module 6; the other end of the resistor R10 is connected with the DC power supply; the other end of the resistor R11 is grounded to the GND; the emitter of the NPN triode Q1 is grounded to the GND.

[0037] The above disclosure is only a few specific embodiments of the utility model, but the utility model embodiments are not limited to this, any changes that can be thought by the person skilled in the art should fall into the protection scope of the utility model.

Claims

1. A central air conditioning fan coil unit controller system, characterized in that: It includes a power board circuit and a control board circuit. The power board circuit includes a voltage conversion module (1), a relay module (2), a power board temperature detection module (3), an external expansion port module (4), and a first ribbon cable connection port module (5). The voltage conversion module (1) is used to connect to an external power source to provide AC voltage to the relay module (2). The relay module (2) is used to control the activation and deactivation of the relay, thereby controlling the speed switching of the fan coil unit and the opening and closing of the electric valve. The power board temperature detection module (3) is used to measure the temperature around the power board. The external expansion port module (4) is used to connect the power source, the three speeds of the fan coil unit, the electric valve, and to the central air conditioning IoT platform system. The first ribbon cable connection port module (5) is used to connect the power board and the second ribbon cable connection port module (13) on the control board to transmit data via the ribbon cable. The control board circuit includes an MCU main control module (6), a display module (7), a temperature detection module (8), a light intensity detection module (9), a CO2 detection module (10), a key detection module (11), a communication module (12), and a second ribbon cable connection port module (13). The MCU main control module (6) is used to receive data, analyze and process the data, display it through the display module (7), and upload the data to the server; the temperature detection module (8) is used to measure the indoor temperature; the light intensity detection module (9) is used to measure the indoor brightness; the CO2 detection module (10) is used to measure the indoor CO2 concentration; the button detection module (11) is used to determine whether a button is pressed; the communication module (12) enables the fan coil controller and the server to communicate and connect, so as to realize the uploading and downloading of data.

2. The central air conditioning fan coil unit controller system according to claim 1, characterized in that: The power board temperature detection module (3) includes a thermistor RT1, a resistor R1, a resistor R2, a capacitor C1, and a capacitor C2. One end of the resistor R1 is connected to one end of the capacitor C2 and connected to a DC power supply. The other end of the resistor R1 is connected to one end of the resistor R2 and one end of the thermistor RT1. The other end of the resistor R2 is connected to one end of the capacitor C1 and the first ribbon cable connection port module (5). The first ribbon cable connection port module (5) is further connected to the MCU main control chip of the MCU main control module (6). The other end of the capacitor C1 is connected to the other end of the capacitor C2 and grounded to GND.

3. A central air conditioning fan coil unit controller system according to claim 2, characterized in that: The CO2 detection module (10) includes a CO2 sensor detection module IC1 and a capacitor C3. The CO2 sensor detection module IC1 has several pins, which are respectively connected to ground GND, DC power supply and one end of capacitor C3, serial communication interface transmission port and reception port of MCU main control chip of MCU main control module (6); the other end of capacitor C3 is connected to ground GND.

4. A central air conditioning fan coil unit controller system according to claim 3, characterized in that: The illumination intensity detection module (9) includes a photoresistor D1, a photoresistor D2, a capacitor C4, a capacitor C5, a resistor R3, and a resistor R4; one end of the photoresistor D1 is connected to one end of the photoresistor D2, and to one end of the capacitor C4 and a DC power supply, and the other end is connected to the other end of the photoresistor D2, the resistor R3, the resistor R4, and one end of the capacitor C5; the other end of the capacitor C4 is grounded to GND; the other ends of the resistor R4 and the capacitor C5 are connected and grounded to GND; the other end of the resistor R3 is connected to the MCU main control chip of the MCU main control module (6).

5. A central air conditioning fan coil unit controller system according to claim 3, characterized in that: The first ribbon cable connection port module (5) includes a terminal JP1, which has several wiring ports. The several wiring ports are respectively connected to the DC power supply, ground GND, the three interfaces of the relay module (2), the other end of the resistor R2 of the power board temperature detection module (3), and the external expansion port module (4). Two of the ports are the positive and negative terminals of RS485 communication. The terminal JP1 is connected to the wiring port of the second ribbon cable connection port module (13) of the control board circuit through a ribbon cable.

6. A central air conditioning fan coil unit controller system according to claim 4, characterized in that: The temperature detection module (8) includes a thermistor RT2, a resistor R5, a resistor R6, and capacitors C6 and C7. One end of the resistor R5 is connected to one end of the capacitor C7 and connected to a DC power supply. The other end of the resistor R5 is connected to one end of the resistor R6 and one end of the thermistor RT2. The other end of the resistor R6 is connected to one end of the capacitor C6 and connected to the MCU chip of the MCU main control module (6). The other end of the capacitor C6 is connected to the other end of the capacitor C7 and grounded to GND.

7. A central air conditioning fan coil unit controller system according to claim 5, characterized in that: The communication module (12) includes an RS485 communication chip IC2, resistors R7, R8, R9, R10, R11, and an NPN transistor Q1. The RS485 communication chip IC2 has several pins, which are connected to one end of resistor R9, the collector of NPN transistor Q1, ground GND, one end of resistor R10, one end of resistor R11, and a DC power supply. The other end of resistor R7 is connected to the DC power supply. One end of resistor R8 is connected to the base of NPN transistor Q1, and the other end is connected to the receiving port of the MCU main control chip of the MCU main control module (6). The other end of resistor R9 is connected to the transmitting port of the MCU main control chip of the MCU main control module (6). The other end of resistor R10 is connected to the DC power supply. The other end of resistor R11 is ground GND. The emitter of NPN transistor Q1 is ground GND.

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