Control device and system for split air conditioner

Abstract

According to the control device and system for the split air conditioner, the MCU chip obtains the indoor temperature and humidity collected by the temperature and humidity collector, then the central air conditioner controller controls the indoor unit of the air conditioner, the indoor temperature and humidity are accurately adjusted, and further, the indoor temperature and humidity are controlled by the central air conditioner controller. The MCU chip collects whether a person exists in a working area and a channel of the air conditioner indoor unit or not through the multiple human body existence sensors and the infrared human body sensor, and after the person leaves, the air conditioner indoor unit can be turned off after a preset time interval. The problem that energy is wasted due to the fact that an existing air conditioner in a commercial place still conducts refrigeration or heating under the indoor unmanned state is solved.

Description

Technical Field

[0001] This utility model relates to the field of central air conditioning, and in particular to a control device and system for split air conditioners. Background Technology

[0002] Currently, central air conditioning systems mainly consist of an outdoor unit and indoor units to regulate indoor temperature and humidity. Air conditioning is one of the most energy-intensive indoor appliances, yet it's an essential part of daily life. Therefore, to reduce energy consumption, companies have adopted various energy-saving technologies, the most important of which is inverter technology, which effectively reduces energy consumption and noise. However, these technological innovations only optimize and upgrade the equipment to reduce energy consumption; they cannot address human-caused energy waste.

[0003] In practical applications, air conditioners are usually used in places such as office buildings, hospitals, hotels, schools, shops, villas and homes. Since neither the thermostat nor the indoor unit can sense whether there are people in the room, the air conditioner will still work to cool or heat if no one is in the room when it is turned on, which will result in a lot of energy waste.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] This utility model discloses a control device and system for split air conditioners, which aims to solve the problem of energy waste caused by air conditioners in existing commercial venues continuing to cool or heat when no one is in the room.

[0006] The first embodiment of this utility model provides a control device for a split air conditioner, including: an MCU chip, a temperature and humidity collector, a central air conditioning controller, an infrared human body sensor, and multiple human presence sensors;

[0007] The input terminal of the MCU chip is electrically connected to the temperature and humidity collector, the input terminal of the MCU chip is electrically connected to multiple human presence sensors and infrared human body sensors, the output terminal of the MCU chip is electrically connected to the input terminal of the central air conditioning controller, the output terminal of the central air conditioning controller is electrically connected to the control terminal of the indoor air conditioning unit, or the central air conditioning controller communicates with the indoor air conditioning unit through a built-in infrared air conditioning code signal.

[0008] The multiple human presence sensors and the temperature and humidity collector are configured in the working area of ​​the indoor unit of the air conditioner, and the infrared human body sensor is configured in the channel area.

[0009] Preferably, it further includes: a wireless module;

[0010] The wireless module and the MCU chip are electrically connected via a serial port on the radio frequency side.

[0011] Preferably, the MCU chip is electrically connected to the temperature and humidity sensor via a serial port and communicates based on the RS485 protocol.

[0012] Preferably, the human presence sensor is a 24GHz micro-motion radar sensor.

[0013] The second embodiment of this utility model provides a control system for a split air conditioner, characterized in that it includes: a cloud platform, a terminal that communicates wirelessly with the cloud platform, and a control device for a split air conditioner as described in any of the above, wherein the MCU chip communicates wirelessly with the cloud platform through a wireless module.

[0014] Based on the control device and system for split air conditioners provided by this utility model, the MCU chip acquires the indoor temperature and humidity collected by the temperature and humidity collector, and then controls the indoor unit of the air conditioner to precisely adjust the indoor temperature and humidity through the central air conditioner controller. Furthermore, the MCU chip uses multiple human presence sensors and infrared human presence sensors to collect whether there are people in the working area and passage of the indoor unit of the air conditioner. After people leave, the indoor unit of the air conditioner can be turned off after a preset time interval or adjusted to the energy-saving temperature preset by the cloud platform. This solves the problem of energy waste caused by the central air conditioning in existing large venues continuing to cool or heat when no one is in the room. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a control device and system for a split air conditioner provided in an embodiment of the present invention. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0017] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0018] This utility model discloses a control device and system for split air conditioners, which aims to solve the problem of energy waste caused by air conditioners in existing commercial venues continuing to cool or heat when no one is in the room.

[0019] Please see Figure 1 The first embodiment of this utility model provides a control device for a split air conditioner, including: an MCU chip 1, a temperature and humidity collector 5, a central air conditioner controller 2, an infrared human body sensor 4, and multiple human presence sensors 3;

[0020] The input terminal of the MCU chip 1 is electrically connected to the temperature and humidity collector 5. The input terminal of the MCU chip 1 is electrically connected to multiple human presence sensors 3 and infrared human body sensors 4. The output terminal of the MCU chip 1 is electrically connected to the input terminal of the central air conditioning controller 2. The output terminal of the central air conditioning controller 2 is used to electrically connect to the control terminal of the indoor air conditioning unit 6, or the central air conditioning controller 2 communicates with the indoor air conditioning unit 6 through a built-in infrared air conditioning code signal.

[0021] The multiple human presence sensors 3 and the temperature and humidity collector 5 are configured in the working area of ​​the indoor unit of the air conditioner 6, and the infrared human body sensor 4 is configured in the channel area.

[0022] It should be noted that in this embodiment, the main application scenario is installation on commercial air conditioners, such as fan coil units of water-cooled central air conditioning systems or split-type refrigerant air conditioners. This can be a one-to-one or one-to-many multi-split air conditioner. The input terminal of the MCU chip 1 is electrically connected to the temperature and humidity sensor 5 to acquire indoor temperature and humidity data in real time. The temperature and humidity sensor 5 is located in the working area of ​​the indoor unit 6. The MCU chip 1 can be an STM32 series microcontroller. The temperature and humidity sensor 5 can communicate with the MCU chip 1 via wired or wireless means. Taking wired communication as an example, the MCU chip 1 can convert the analog signals acquired by the temperature and humidity sensor 5 into digital signals. Combined with the user-preset temperature control requirements, it issues control commands to the central air conditioning controller 2, thereby precisely controlling the operating status of the indoor unit 6 and ensuring that the indoor temperature and humidity remain within the set range. It should also be noted that the central air conditioning controller 2 can be equipped with an infrared control module to output air conditioning infrared codes to control the indoor unit 6, which lacks a control terminal. The central air conditioning controller 2 may be equipped with an energy consumption acquisition module, which is used to collect the energy consumption of the indoor air conditioning unit 6 during operation and to determine the current operating status of the uncontrolled indoor air conditioning unit 6.

[0023] In addition, the input terminal of the MCU chip 1 is electrically connected to multiple human presence sensors 3 and infrared human body sensors 4 to determine whether there is human activity within the working area of ​​the indoor unit 6 of the air conditioner. The multiple human presence sensors 3 and infrared human body sensors 4 can also communicate with the MCU chip 1 via wired or wireless means. Taking wireless communication as an example, they can use a Zigbee module or a Bluetooth module to communicate with the MCU chip 1. Of course, the MCU chip 1 is also equipped with a Zigbee module or Bluetooth module to establish a connection with the Zigbee module or Bluetooth module configured on the sensors.

[0024] Multiple human presence sensors 3 are installed in the working area of ​​the indoor unit 6 of the air conditioner. They can detect the presence of people in the room, and the system maintains normal operation of the air conditioner when someone is detected in the area. The human presence sensors 3 can detect subtle human movements and even heartbeats to ensure that their presence can be effectively detected even when people are stationary. Infrared human presence sensors 4 are installed in the passageway area to determine the status of people entering and leaving the room.

[0025] When the infrared human body sensor 4 or the human presence sensor 3 detects that no one is in the room, the MCU chip 1 will determine whether to turn off the indoor air conditioning unit 6 based on a preset energy-saving strategy. Normally, after a person leaves the room, the system enters a delay mode. If no person is detected returning after a preset time, the indoor air conditioning unit 6 will automatically turn off, or the indoor temperature will be adjusted to an energy-saving state. This system not only adjusts indoor temperature and humidity in real time but also effectively reduces energy consumption based on actual usage, making it particularly suitable for large venues such as hotels, office buildings, and shopping malls where there is a high demand for central air conditioning.

[0026] In one possible embodiment of this utility model, it may further include: a wireless module 7;

[0027] The wireless module 7 and the MCU chip 1 are electrically connected via a serial port on the radio frequency side.

[0028] It should be noted that in this embodiment, the wireless module 7 can be one or more of a WiFi module, a 4G module, and a 5G module. The wireless module is electrically connected to the serial port of the RF terminal of the MCU chip 1, allowing the system to communicate with the cloud platform wirelessly. The wireless module enables the central air conditioning control device to not only be controlled locally but also remotely for control and monitoring. Through the wireless module, the MCU chip 1 can send information such as the air conditioner's operating status, indoor temperature and humidity data, and sensor feedback to the cloud platform or mobile terminal. Users or the management system can remotely adjust the air conditioner's operating parameters, view real-time data, or set new energy-saving strategies via the wireless network. The wireless communication function improves the system's flexibility and management efficiency, and is especially suitable for centralized management in large venues such as schools, hospitals, hotels, office buildings, and shopping malls.

[0029] In one possible embodiment of this utility model, the MCU chip 1 is electrically connected to the temperature and humidity collector 5 via a serial port and communicates based on the RS485 protocol.

[0030] In this embodiment, MCU chip 1 sends a request signal through its serial interface, instructing temperature and humidity sensor 5 to read the current indoor temperature and humidity information. Temperature and humidity sensor 5 collects temperature and humidity data according to the MCU's instructions and transmits the collected data back to MCU chip 1 as analog signals via an RS485 bus. Upon receiving this data, MCU chip 1 converts the analog signals to digital signals and compares the data with a preset temperature control standard. If the temperature and humidity exceed the set range, MCU chip 1 will adjust the operating status of the air conditioning system through corresponding control commands, thereby precisely regulating the indoor temperature and humidity.

[0031] In one possible embodiment of this utility model, the human presence sensor 4 is a 24GHz micro-motion radar sensor.

[0032] It should be noted that the 24GHz micro-motion radar sensor can penetrate certain non-metallic obstacles, such as thin walls or furniture, and maintains high detection accuracy even in complex room layouts. When applied to the control system of a central air conditioning system, the 24GHz micro-motion radar sensor can detect the activity of people within the working area of ​​the indoor unit 6 in real time. When people enter or move within the working area, the micro-motion radar sensor immediately captures minute motion signals and transmits this data to the MCU chip 1, ensuring the air conditioning system continues to operate normally.

[0033] Please continue reading. Figure 1The second embodiment of this utility model provides a control system for a split air conditioner, including: a cloud platform 8, a terminal 9 that communicates wirelessly with the cloud platform 8, and a control device for a split air conditioner as described above. The MCU chip 1 communicates wirelessly with the cloud platform 8 through a wireless module.

[0034] Based on the control device and system for split air conditioners provided by this utility model, the MCU chip 1 acquires the indoor temperature and humidity collected by the temperature and humidity collector 5, and then controls the indoor unit 6 of the air conditioner precisely to control the indoor temperature and humidity through the central air conditioner controller 2. Furthermore, the MCU chip 1 uses multiple human presence sensors 3 and infrared human presence sensors 4 to collect whether there are people in the working area and passage of the indoor unit 6. After a person leaves, the indoor unit 6 can be turned off after a preset time interval, which solves the problem of existing commercial air conditioners continuing to cool or heat when no one is in the room, resulting in energy waste.

[0035] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions that fall within the scope of this utility model's concept are protected by this utility model.

Claims

1. A control device for a split-type air conditioner, characterized in that, include: MCU chip, temperature and humidity sensor, central air conditioning controller, infrared human body sensor, and multiple human presence sensors; The input terminal of the MCU chip is electrically connected to the temperature and humidity collector, the input terminal of the MCU chip is electrically connected to multiple human presence sensors and infrared human body sensors, the output terminal of the MCU chip is electrically connected to the input terminal of the central air conditioning controller, the output terminal of the central air conditioning controller is electrically connected to the control terminal of the indoor air conditioning unit, or the central air conditioning controller communicates with the indoor air conditioning unit through a built-in infrared air conditioning code signal. The multiple human presence sensors and the temperature and humidity collector are configured in the working area of ​​the indoor unit of the air conditioner, and the infrared human body sensor is configured in the channel area.

2. A control device for a split-type air conditioner according to claim 1, characterized in that, Also includes: Wireless module; The wireless module and the MCU chip are electrically connected via a serial port on the radio frequency side.

3. A control device for a split-type air conditioner according to claim 1, characterized in that, The MCU chip is electrically connected to the temperature and humidity sensor via a serial port and communicates with it based on the RS485 protocol.

4. A control device for a split-type air conditioner according to claim 1, characterized in that, The human presence sensor is a 24GHz micro-motion radar sensor.

5. A control system for a split-type air conditioner, characterized in that, include: The cloud platform, the terminal that communicates wirelessly with the cloud platform, and the control device for a split air conditioner as described in any one of claims 1 to 4, wherein the MCU chip communicates wirelessly with the cloud platform via a wireless module.

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