Low-cost multi-interface monitoring 4G Internet of Things intelligent control board

Abstract

The utility model discloses a 4G Internet of Things intelligent control board with low cost and multi-interface monitoring. The 4G Internet of Things intelligent control board comprises an MCU master control module and a 4G communication module. The 485 communication module communicates with the metering device; the 485 communication module is connected with the MCU main control module through a UART (Universal Asynchronous Receiver / Transmitter) serial port; the photoelectric coupling module is connected with the detection device, and the photoelectric coupling module is connected with the MCU main control module and uploads a detection result output by the detection device to the MCU main control module; and the relay switch module is used for controlling the execution device to be connected, is connected with the MCU main control module and is used for determining whether the execution device is powered up or not according to a control signal generated by the MCU main control module. According to the utility model, remote terminal control is realized through the 4G communication module. A plurality of groups of independent relay switch module control loops and a plurality of groups of independent photoelectric coupling input modules are arranged, control equipment is installed and expanded according to actual requirements, and a plurality of 485 communication interfaces are arranged to realize more diversified control and equipment information receiving and transmitting.

Description

Technical Field

[0001] The utility model relates to a 4G Internet of Things intelligent control board for low-cost multi-interface monitoring. Background Art

[0002] A 4G Internet of Things intelligent control board is an Internet of Things device integrating 4G communication technology, which allows users to remotely control and monitor devices through the Internet. This intelligent plug usually has a 4G-SIM card built in and can perform remote control even where there is no WiFi signal.

[0003] With the rapid development of the Internet of Things technology, as an important component for device networking and control, the 4G Internet of Things intelligent control board is increasingly widely used in the Internet of Things. The 4G technology provides strong support for the 4G Internet of Things intelligent control board with its advantages such as high speed, high stability, and high bandwidth. The Internet of Things technology is widely applied in multiple fields such as smart home appliances, smart home systems, smart agriculture, smart toilets, outdoor monitoring, public safety, and industrial automation to achieve remote control and monitoring and improve the intelligent level and usage convenience of devices. The existing 4G intelligent control boards cannot meet the usage requirements of low cost, multi-channel control, multi-channel data acquisition, and high adaptability. Summary of the Utility Model

[0004] The utility model aims at the problem that the existing 4G intelligent control boards cannot meet the usage requirements of low cost, multi-channel control, multi-channel data acquisition, and high adaptability, and provides a 4G Internet of Things intelligent control board for low-cost multi-interface monitoring.

[0005] The technical solution adopted by the utility model to achieve its technical purpose is: a 4G Internet of Things intelligent control board for low-cost multi-interface monitoring, including an MCU main control module and a 4G communication module for realizing the uploading of device status and the issuing of control instructions by the platform; it also includes

[0006] a 485 communication module communicating with a metering device, and the 485 communication module is connected to the MCU main control module through a UART serial port;

[0007] an opto-coupling module connected to a detection device, and the opto-coupling module is connected to the MCU main control module to upload the detection result output by the detection device to the MCU main control module;

[0008] a relay switch module connected to a control execution device, and the relay switch module is connected to the MCU main control module to determine whether to power on the execution device according to the control signal generated by the MCU main control module.

[0009] Furthermore, in the above-mentioned 4G Internet of Things intelligent control board for low-cost multi-interface monitoring: the 485 communication module includes a bus transceiver, and the bus transceiver uses a chip with the model number 75176B.

[0010] Further, in the above-mentioned low-cost multi-interface monitoring 4G IoT intelligent control board: The metering devices communicating with the 485 communication module include water meters, electricity meters, and gas meters.

[0011] Further, in the above-mentioned low-cost multi-interface monitoring 4G IoT intelligent control board: The relay switch module includes a relay and the relay drive circuit. The relay drive circuit includes a triode, and the base of the triode is electrically connected to the MCU main control module.

[0012] Further, in the above-mentioned low-cost multi-interface monitoring 4G IoT intelligent control board: The actuators controlled by the relay switch module include: door locks, lighting lamps, exhaust fans, signboards, water pumps, hot air blowers, perfume diffusers, ultraviolet lamps, and voice broadcast devices.

[0013] Further, in the above-mentioned low-cost multi-interface monitoring 4G IoT intelligent control board: The detection signals collected by the optoelectronic coupling module are: signals for detecting whether someone is coming using radar, signals for detecting whether the mains power is normal, signals for detecting whether the water supply is normal, and signals for detecting whether the door is closed.

[0014] In the present utility model, the present utility model realizes remote terminal control through a 4G communication module. It has independent multiple groups of relay switch module control circuits and multiple groups of optoelectronic coupling input modules, and installs and expands its control devices according to actual needs, and is equipped with multiple 485 communication interfaces to achieve more diverse control and device information transmission and reception.

[0015] The following further describes the present utility model in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0016] Figure 1 It is the composite application diagram of Embodiment 1 of the present utility model;

[0017] Figure 2 It is the structural block diagram of Embodiment 1 of the present utility model;

[0018] Figure 3 It is the 485 communication interface circuit (one) of Embodiment 1 of the present utility model;

[0019] Figure 4 It is the 485 communication interface circuit (two) of Embodiment 1 of the present utility model;

[0020] Figure 5 It is the relay switch circuit of Embodiment 1 of the present utility model;

[0021] Figure 6 It is the input conversion signal circuit of Embodiment 1 of the present utility model. Specific Embodiments

[0022] Example 1, Example 1, as Figure 1 shown, this embodiment is the application of an intelligent public toilet. The door lock, lighting lamp, fan, sign, speaker, water pump, hot air blower, perfume sprayer, ultraviolet lamp, water meter, electric meter, radar, and door lock button are combined through signal connection lines. When the intelligent public toilet platform issues a control signal and the service period packs and sends the data to the control board, the control of the 4G IoT control board can be realized. The specific working logic is as follows: After the platform receives the door opening instruction sent by the customer, the terminal sends a start instruction to the device side. After receiving the instruction, the 4G IoT control board will open the door lock, lighting lamp, and fan; if no one is detected by the radar within one minute, the main process ends; if someone is detected by the radar within one minute, the sign will display that someone is inside, and the voice reminder will be broadcast every three minutes; when the internal door lock button is pressed, the door lock will open. When the radar detects that someone has left, the sign will display that no one is inside, and the 4G IoT control board will turn on the water pump, hot air blower, and perfume sprayer to flush, dry, and spray perfume respectively. After the above process ends, wait for 5 seconds to turn off the lighting lamp and fan, and the main process ends.

[0023] Each 4G IoT control board has an independent coding address and IMEI number and can work independently. The intelligent public toilet platform can set the corresponding action instructions to realize the control of the 4G IoT control board. During the process of executing the process, the intelligent public toilet uploads the values of the water and electricity meters, as well as the device parameters and status, in real time through the 4G communication module. The intelligent public toilet platform realizes real-time monitoring and remote management through the received data packets.

[0024] as Figure 2 shown, the structural diagram of this embodiment includes an MCU main control module, a 4G communication module, a 485 communication module that communicates with the MCU main control module through the UART serial port, and an opto-coupled signal conversion and relay switch control circuit. The voltage input to the main circuit of the 4G IoT control board is DC 12V. It reduces the input DC 12V voltage to 5V and 3.3V to provide stable and appropriate voltage values for each module device and maintain the stable operation of the 4G IoT control board. Through the 4G communication module, the real-time device status and sensor parameters are uploaded, and the intelligent public toilet platform can observe the real-time dynamics of the device; the platform sends control instructions to the server through the 4G network, and the server then forwards the instructions to a certain base station in the 4G network. After receiving the instructions, it sends data packets to the 4G control board. After receiving the data packets, it analyzes and processes them according to the instruction content and returns the processed data to the platform to realize the control and monitoring of multiple modules.

[0025] as Figure 3 and Figure 4As shown in the figure, the 485 communication interface circuit of this embodiment can receive various sensors for 485 communication and 485 communication control devices, transmit the measured values of the sensors, and control the next-level devices; the signals of the RS-485 communication interface circuit are respectively converted by chips IC2 and IC5 of model 75176B, which is a bus transceiver chip. The water meter and the electricity meter are connected through ports. The interface conversion signals of RS-485 are 3.3V, RS485-2A, RS485-2B, and GND. The signal conversion chip IC5 receives the data packets of the water meter and the electricity meter, and after being parsed by the MCU, uploads them to the platform to monitor the real-time water and electricity usage status of the public toilet and provide data for calculating the usage fees. As Figure 3 shown: Pin 1 of the bus transceiver IC2 is connected to resistor R48, diode D15, resistor R53, and resistor R54; pins 2 and 3 are connected to resistor R52, triode Q11, resistor R55, and the 5V power supply, pin 4 is connected to resistor R56; pin 5 is connected to the GND terminal, and pins 6 and 7 are respectively connected to the RS485_A terminal and the RS485_B terminal through resistors R59, R60, and R61; pin 8 is connected to the 5V power supply and is in parallel with capacitor C9. As Figure 4 shown: Pin 1 of the bus transceiver IC5 is connected to resistor R96, resistor R97, and the power supply 3.3V, pins 2 and 3 are connected to resistor R93, pin 4 is connected to resistor R90, pin 5 is connected to the GND terminal, and pins 6 and 7 are respectively connected to the RS485_2A terminal and the RS485_2B terminal through resistors R85, R91, R92, R94, and R95; pin 8 is connected to the 3.3v power supply and is in parallel with capacitor C17.

[0026] As Figure 5 shown, the input conversion signal circuit and the relay switch circuit of this embodiment are configured with multiple interfaces and independently control each port; in this embodiment, the relay switch module includes 12 relays, and each relay has the same drive circuit as Figure 5 shown, where triode Qi, where i represents 1, 2, 3... 12, is the serial number of the relay. Each drive circuit respectively has a diode Di, two resistors Ri, and resistor Ri+1; the opto-coupler circuit input module includes a total of 9 opto-couplers, namely opto-couplers U4, U5, U6, U7, U8, U9, U10, U11, U12, and U13.

[0027] As Figure 6The figure shows the interface for the 4G IoT intelligent control board in this embodiment to collect and detect data. In this embodiment, since the detected signals are generally switch signals, the detection signals collected by the optocoupler module mainly include the signal detected by the radar to determine whether someone is approaching, the signal to detect whether the mains power is normal, the signal to detect whether the water supply is normal, and the signal to detect whether the door is closed. As shown in the figure, the input end of the optocoupler (EL3H7-G) can receive the DC electrical signal source signals (radar, button, etc.), and IN1…IN10 are connected to the input end of the MCU main control chip.

Claims

1. A 4G IoT intelligent control board with low-cost multi-interface monitoring, including an MCU main control module and a 4G communication module for implementing platform upload of device status and issuing control instructions; characterized in that: It further includes a 485 communication module that communicates with the metering device. The 485 communication module is connected to the MCU main control module through a UART serial port. An opto-coupling module connected to the detection device. The opto-coupling module is connected to the MCU main control module to upload the detection results output by the detection device to the MCU main control module. A relay switch module connected to the control execution device. The relay switch module is connected to the MCU main control module and determines whether to power on the execution device according to the control signal generated by the MCU main control module.

2. The low-cost multi-interface monitoring 4G IoT intelligent control board according to claim 1, characterized in that: The 485 communication module includes a bus transceiver, and the bus transceiver uses a chip with the model number 75176B.

3. The low-cost multi-interface monitored 4G IoT intelligent control board according to claim 2, wherein: The metering device that communicates with the 485 communication module includes a water meter, an electric meter, and a gas meter.

4. The low-cost multi-interface monitored 4G IoT intelligent control board according to claim 1, characterized in that: The relay switch module includes a relay and a relay drive circuit. The relay drive circuit includes a triode, and the base of the triode is electrically connected to the MCU main control module.

5. The low-cost multi-interface monitored 4G IoT intelligent control board according to claim 4, wherein: The execution devices controlled by the relay switch module include: door locks, lighting lamps, exhaust fans, signboards, water pumps, hot air blowers, perfume sprayers, ultraviolet lamps, and voice broadcast devices.

6. The low-cost multi-interface monitoring 4G IoT intelligent control board according to claim 1, characterized in that: The detection signals collected by using the opto-coupling module are: signals for detecting whether someone comes by radar, signals for detecting whether the mains power is normal, signals for detecting whether the water supply is normal, and signals for detecting whether the door is closed.

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