A hand-held intelligent temperature controller system

Abstract

The utility model discloses a handheld intelligent temperature controller system, including main control module, sensor module, electric capacity touch module, PLC control circuit module, relay control module, LED drive module and interface extension module, main control module is connected with PLC control circuit module two -way through I / O pin, the main control module is connected with electric capacity touch module one -way through I2C pin, the main control module is connected with relay control module one -way through hardware output interface, the utility model discloses through built -in temperature and humidity sensor and environmental light sensor, can accurate monitoring indoor environment parameter, can automatically adjust operation mode according to environment parameter, improve energy utilization efficiency, realize energy -conserving operation, such as automatically adjusting display brightness according to illumination intensity, reduce energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of electronic devices with intelligent temperature controllers, and in particular to a handheld intelligent temperature controller system. Background Technology

[0002] A smart thermostat is a device that automatically adjusts and controls temperature, primarily used to manage the temperature operation of home or commercial appliances such as underfloor heating, air conditioning, water heaters, and central ventilation systems. The product types mainly include basic smart (manual) thermostats and programmable thermostats.

[0003] The basic model supports temperature adjustment from 0℃ to 30℃, features dual floor temperature control, and automatic ambient temperature sensing for switching. It can be wall-mounted or installed in a junction box, is compatible with 220V voltage and an LM35DZ sensor, and is moisture-proof and mildew-proof. The programmable model features a microcomputer system, supports weekly time-segmented temperature programming, an LCD display and touch buttons, built-in overheat protection and anti-frosting functions, and an extended temperature control range of 5-99℃. It uses an LNTC thermistor sensor and allows for customized anti-freeze and overheat protection temperatures. Both models offer multiple rated current configurations to accommodate different power appliances.

[0004] With the development of the Internet of Things (IoT) and smart home technologies, smart thermostats are playing an increasingly important role in improving energy efficiency and living comfort. However, existing smart thermostats have some problems, such as complex operation, slow response speed, and inability to precisely adjust the temperature. Furthermore, existing smart thermostats are also insufficient in adapting to different environments and user habits. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a handheld intelligent thermostat system. Through built-in temperature and humidity sensors and ambient light sensors, it can accurately monitor indoor environmental parameters. Employing a specific main control chip, it supports WiFi 802.11 b / g / n, WiFi 6, and Bluetooth, enabling remote control via a mobile app and cloud connectivity. This system overcomes the deficiencies of existing thermostats in terms of intelligent control, remote management, environmental monitoring and response, compatibility with other smart devices, and convenience.

[0006] The purpose of this utility model is achieved as follows: a handheld intelligent temperature controller system, including a main control module, a sensor module, a capacitive touch module, a PLC control circuit module, a relay control module, an LED driver module, and an interface expansion module;

[0007] The main control module is used to receive detection signals and interaction signals from each input module, perform data processing, logical operations and instruction generation, and send control commands to each output module and execution module to realize global scheduling and functional control of the entire circuit.

[0008] The sensor module is used to monitor indoor environmental parameters and transmit the corresponding digital signals of temperature and humidity and the electrical signals corresponding to light intensity to the main control module.

[0009] The capacitive touch module is used to receive user touch operations, generate and output touch trigger electrical signals to realize human-computer interaction;

[0010] The PLC control circuit module is used to receive instructions from the main control module and execute preset logic operations, signal processing, and real-time control tasks.

[0011] The relay control module is used to receive the on / off control signal from the main control module, realize the on / off control of the external circuit, and has the function of maintaining the power-off state.

[0012] The LED driver module is used to receive display control commands from the main control module and control the device status display of the icon LEDs and the direction or operation indication of the arrow LEDs;

[0013] The interface expansion module is used to expand the number of I / O interfaces of the main control module, enabling the main control module to connect with more I2C devices.

[0014] Furthermore, the sensor module includes an ambient light sensor and a temperature and humidity sensor; the ambient light sensor is unidirectionally connected to the main control module via an I / O pin, transmitting a light intensity detection signal to the main control module;

[0015] The temperature and humidity sensor is unidirectionally connected to the main control module via an I2C bus, transmitting temperature and humidity detection data to the main control module.

[0016] Furthermore, it also includes left and right side interface board modules, which provide 24VAC power interfaces and Y2, Y1, G, RC, and ACC signal interfaces to realize power transmission and signal interaction between the main control module and external devices; the left and right side interface board modules are bidirectionally connected to the main control module through POGO PIN spring pins to realize bidirectional power and signal transmission.

[0017] Furthermore, it also includes segmented digital tubes, which are unidirectionally connected to the main control module via an LED driver module; used to receive display data from the main control module and realize the visual output of digital information.

[0018] Furthermore, the main control module is bidirectionally connected to the PLC control circuit module via I / O pins; the main control module is unidirectionally connected to the capacitive touch module via I2C pins; and the main control module is unidirectionally connected to the relay control module via a hardware output interface.

[0019] Furthermore, the main control module uses the RTL8721CSM-U203 chip.

[0020] Compared with existing technologies, the advantages of this utility model are as follows: 1) Through the built-in temperature and humidity sensor and ambient light sensor, indoor environmental parameters can be accurately monitored, and the operating mode can be automatically adjusted according to the environmental parameters to improve energy utilization efficiency and achieve energy-saving operation, such as automatically adjusting the display brightness according to the light intensity to reduce energy consumption. 2) The RTL8721CSM-U203 main control chip is used to realize remote intelligent control and monitoring of the HVAC system. Users can adjust parameters such as temperature and humidity anytime and anywhere through a mobile app, improving the convenience and comfort of use. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 System structure diagram of this utility model.

[0023] Figure 2 Circuit diagram of the main control module of this utility model.

[0024] Figure 3 Circuit diagram of the temperature and humidity sensor of this utility model.

[0025] Figure 4 Circuit diagram of the ambient light sensor of this utility model.

[0026] Figure 5 Circuit diagram of the capacitive touch module of this utility model.

[0027] Figure 6 This utility model presents a PLC control circuit diagram.

[0028] Figure 7 Circuit diagram of the LED driver module of this utility model.

[0029] Figure 8 Circuit diagram of the interface expansion module of this utility model.

[0030] Figure 9 Circuit diagram of W1 in the relay control module of this utility model. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figure 1 The handheld intelligent temperature controller system shown includes a main control module, a sensor module, a capacitive touch module, a PLC control circuit module, a relay control module, an LED driver module, and an interface expansion module.

[0033] like Figure 2 As shown, the main control module receives detection signals and interaction signals from each input module, performs data processing, logical operations, and instruction generation, and sends control commands to each output module and execution module to achieve global scheduling and functional control of the entire circuit. The main control module is bidirectionally connected to the PLC control circuit module via I / O pins; it is unidirectionally connected to the capacitive touch module via I / O pins; and it is unidirectionally connected to the relay control module via a hardware output interface. The main control module uses the RTL8721CSM-U203 chip; Table 1 shows the core function pin group; Table 2 shows the peripheral interface pin group.

[0034] Table 1 Core Function Pin Groups

[0035]

[0036] Table 2 Peripheral Interface Pin Groups

[0037]

[0038] The sensor module is used to monitor indoor environmental parameters and transmit the corresponding digital signals of temperature and humidity, as well as the electrical signals corresponding to light intensity, to the main control module. The sensor module includes an ambient light sensor and a temperature and humidity sensor. The ambient light sensor is unidirectionally connected to the main control module through I / O pins and transmits light intensity detection signals to the main control module. The temperature and humidity sensor is unidirectionally connected to the main control module through an I2C bus and transmits temperature and humidity detection data to the main control module.

[0039] like Figure 3As shown, the temperature and humidity sensor uses the SHTV4(U302) chip. Pin 1 of this chip is connected to the I2C_SDA pin of the main control module, and pin 2 is connected to the I2C_SCL pin of the main control module. Table 3 shows the detailed pin connections of the SHTV4(U302) temperature and humidity sensor.

[0040] Table 3

[0041]

[0042] like Figure 4 As shown, in this embodiment, the ambient light sensor uses an ALS-PT19 (Q300). The collector of the ambient light sensor is connected to a 3V3 power supply via R311 (22K); the emitter is connected to the ADC_LIGHT_SENSOR (ADC input) of the main control module; the emitter is connected to GND, and is also connected to one end of resistor R311 and one end of capacitor C312. Resistor R311 works with the sensor to perform signal voltage division or current limiting; the ambient light sensor detects the ambient light intensity, generates and outputs an electrical signal corresponding to the light intensity, and connects unidirectionally to the main control module through the I / O pin to transmit the light intensity detection signal to the main control module.

[0043] like Figure 5 As shown, the capacitive touch module receives user touch operations (UP / DOWN keys), generates and outputs touch trigger electrical signals to achieve human-computer interaction; it is unidirectionally connected to the main control module via the I2C pin to transmit touch trigger signals to the main control module. In this embodiment, the capacitive touch module adopts IQS7222C(U303), wherein the touch buttons (CTE300~CTE303) are: four capacitive touch buttons (corresponding to MODE, FAN, TEMP UP, TEMP DOWN functions), which generate trigger signals by sensing the capacitance change when the human body touches; the capacitive touch module transmits touch commands to the main control module through the I2C interface (SDA / SCL pins); Table 4 shows the detailed pin connections of the capacitive touch module IQS7222C(U303);

[0044] Table 4

[0045]

[0046] like Figure 6As shown, the PLC control circuit module receives instructions from the main control module and executes preset logic operations, signal processing, and real-time control tasks. In this embodiment, the THVD8000-U900 chip is used to modulate data to a 1MHz carrier frequency and transmit it via the power line; simultaneously, the signal on the power line is demodulated and restored to a digital signal. It supports a dual-interface mode of "power line communication + RS-485 communication" to achieve communication adaptation for different devices. The power line coupling and protection circuit: capacitor C906 and inductor L900 constitute a high-frequency signal coupling circuit to achieve isolated transmission of the 1MHz communication signal from the 24VAC power line; diode D900 and resistors R923 / R924 provide overvoltage and overcurrent protection to prevent power line interference from damaging the chip. RS-485 interface circuit: Connects to the external main controller via PLC_RXD, PLC_TXD, and PLC_MODE pins to achieve digital communication of differential signals, suitable for long-distance, interference-resistant equipment networking; Y1 relay interface: Connects to a 24VAC relay (Y1) to achieve on / off control of the power line and external equipment; simultaneously, the relay status is fed back via the RC-Y1 pin to complete the control closed loop. Table 5 shows the pin connections of the PLC control circuit module chip;

[0047] Table 5

[0048]

[0049] like Figure 7 As shown, the LED driver module is used to receive display control commands from the main control module, control the device status display of the icon LEDs and the direction or operation indication of the arrow LEDs; the segmented digital tube is unidirectionally connected to the main control module through the LED driver module; it is used to receive display data from the main control module and realize the visual output of digital information; in this embodiment, the S31FL3746A-QFLS4-TR chip is used, and the SCL / SDA pins of the LED driver module (I2C address 0x60) are connected to the I2C bus of the main control module; the CS1-CS18 pins are connected to the column selection lines of the LED matrix of the segmented digital tube; the SW1-SW3 pins are connected to the row scan lines of the LED matrix of the segmented digital tube.

[0050] like Figure 8As shown, the interface expansion module is used to expand the number of I / O interfaces of the main control module, enabling the main control module to connect with more I2C devices. This invention uses the AL5524LR (U700) chip. The chip (U700) communicates with the main control module via the I2C bus (SDA / SCL pins), converting the main controller's I2C signals into multiple GPIO outputs, thus expanding the number of control interfaces. The diagram includes 16 GPIO outputs (RA0~RA7, RB0~RB7, some pins labeled as "CLYW_RESET" or other functional terminals). These are connected to the main controller via the I2C_SDA and I2C_SCL pins, supporting bidirectional data transmission via the I2C protocol, enabling the main controller to configure and control the expanded GPIOs. Table 6 shows the pin connections of the interface expansion module.

[0051] Table 6

[0052]

[0053] The relay control module is used to receive the on / off control signals from the main control module, realize the on / off control of the external circuit, and has the function of maintaining the power-off state. Figure 9 The circuit diagram for relay W1 is shown. The other relays W2, Y1, Y2, G, and AUX have the same circuit as W1; Table 7 shows the relay control signal mapping.

[0054] Table 7

[0055]

[0056] The main control module sends commands to the U700 via the I2C bus (I2C_SDA / I2C_SCL); the interface expansion module U700 converts the I2C signals into multiple GPIO outputs (such as CLYW_RESET, CTLY_RESET, etc.) and sends control signals to the relay W1 control module; the relay W1 operates after receiving the control signals from the GPIO expander: the control signals output by the GPIO expander (such as CLYW1_RESET) are input to the relay module's drive circuit (optocoupler + transistor);

[0057] The drive circuit converts the low-voltage control signal into a drive current for the relay coil, controlling the opening and closing of the relay contacts (24VAC). After the relay contacts actuate, the power of the external circuit is switched, thus completing the final control function.

[0058] The left and right interface board modules provide 24VAC power interfaces and Y2, Y1, G, RC, and ACC signal interfaces, enabling power transmission and signal interaction between the main control module and external devices. These interface board modules are bidirectionally connected to the main control module via POGO PIN spring pins, facilitating bidirectional power and signal transmission. Specifically, they include a left interface board and a right interface board. The left interface board includes Y2, Y1, G, 24RC, and 24RH interfaces, while the right interface board includes ACC2, ACC1, W2, W1, and C interfaces.

[0059] This invention employs a Realtek RTL8730EAH-VD3-CG Wi-Fi / BLE chip, supporting WiFi 802.11 b / g / n, Wi-Fi 6, and Bluetooth, enabling remote control via a mobile app and cloud connectivity. It also features a 915MHz radio for communication with external sensors, supporting HVAC system configuration, monitoring, and control via a mobile app, and can interact with the Carrier cloud for remote management. Through the Sensirion SHTV4-BD1B-R3 temperature and humidity sensor and the EVLITE ELECTRONICS CO LTD ALS-PT19-315C / L177 / TR8 ambient light sensor, it can accurately monitor indoor environmental parameters such as temperature, humidity, and light intensity, and automatically adjust the HVAC system's operation according to environmental conditions, such as switching display modes based on light intensity and controlling ventilation equipment based on indoor and outdoor temperature differences.

[0060] The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A handheld intelligent temperature controller system, characterized in that, It includes a main control module, a sensor module, a capacitive touch module, a PLC control circuit module, a relay control module, an LED driver module, and an interface expansion module; The main control module is used to receive detection signals and interaction signals from each input module, perform data processing, logical operations and instruction generation, and send control commands to each output module and execution module to realize global scheduling and functional control of the entire circuit. The sensor module is used to monitor indoor environmental parameters and transmit the corresponding digital signals of temperature and humidity and the electrical signals corresponding to light intensity to the main control module. The capacitive touch module is used to receive user touch operations, generate and output touch trigger electrical signals to realize human-computer interaction; The PLC control circuit module is used to receive instructions from the main control module and execute preset logic operations, signal processing, and real-time control tasks. The relay control module is used to receive the on / off control signal from the main control module, realize the on / off control of the external circuit, and has the function of maintaining the power-off state. The LED driver module is used to receive display control commands from the main control module and control the device status display of the icon LEDs and the direction or operation indication of the arrow LEDs; The interface expansion module is used to expand the number of I / O interfaces of the main control module, enabling the main control module to connect with more I2C devices.

2. The handheld intelligent temperature controller system according to claim 1, characterized in that, The sensor module includes an ambient light sensor and a temperature and humidity sensor; the ambient light sensor is unidirectionally connected to the main control module via I / O pins and transmits light intensity detection signals to the main control module. The temperature and humidity sensor is unidirectionally connected to the main control module via an I2C bus, transmitting temperature and humidity detection data to the main control module.

3. The handheld intelligent temperature controller system according to claim 1, characterized in that, It also includes left and right side interface board modules, which provide 24VAC power interfaces and Y2, Y1, G, RC, and ACC signal interfaces to realize power transmission and signal interaction between the main control module and external devices; the left and right side interface board modules are bidirectionally connected to the main control module through POGOPIN spring pins to realize bidirectional power and signal transmission.

4. The handheld intelligent temperature controller system according to claim 1, characterized in that, It also includes segmented digital tubes, which are unidirectionally connected to the main control module via an LED driver module; used to receive display data from the main control module and realize the visual output of digital information.

5. A handheld intelligent temperature controller system according to claim 1, characterized in that, The main control module is bidirectionally connected to the PLC control circuit module via I / O pins; the main control module is unidirectionally connected to the capacitive touch module via I2C pins; and the main control module is unidirectionally connected to the relay control module via a hardware output interface.

6. The handheld intelligent temperature controller system according to claim 1, characterized in that, The main control module uses the RTL8721CSM chip.

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