CN-224203154-U - Cloud embedded gas detection system based on sensor array

CN224203154UCN 224203154 UCN224203154 UCN 224203154UCN-224203154-U

Abstract

The application belongs to the technical field of gas detection, and particularly discloses a cloud embedded gas detection system based on a sensor array, which comprises a plurality of sensor node systems, a cloud server and a terminal system; the sensor node system comprises a gas sensor array, a signal acquisition module, a microcontroller unit MCU and a wireless communication module, wherein the output end of the gas sensor array is electrically connected with the input end of the signal acquisition module, the output end of the signal acquisition module is electrically connected with the input end of the MCU, the MCU is in communication connection with a cloud server through the wireless communication module, and the terminal system is connected with the cloud server through a network. According to the application, through multi-node wireless networking and cloud cooperative processing, remote monitoring is supported, the flexibility and expandability of the system can be improved, and the maintenance cost and the deployment difficulty can be reduced.

Inventors

CHEN YANXIANG
LI HUAYAO
LIU HUAN
Yan Fangcen
YANG WANLI
LI ANQI
LIU JIAQI

Assignees

华中科技大学

Dates

Publication Date: 20260505
Application Date: 20250310

Claims (8)

1. The cloud embedded gas detection system based on the sensor array is characterized by comprising a plurality of sensor node systems, a cloud server and a terminal system; The sensor node system comprises a gas sensor array, a signal acquisition module, a microcontroller unit MCU and a wireless communication module; The output end of the gas sensor array is electrically connected with the input end of the signal acquisition module, and the output end of the signal acquisition module is electrically connected with the input end of the MCU; The MCU is in communication connection with the cloud server through the wireless communication module; the terminal system is connected with the cloud server through a network; the signal acquisition module comprises a differential amplifying circuit and an analog-to-digital converter; The differential amplifying circuit comprises a plurality of differential amplifier units, the input ends of the differential amplifier units are respectively connected with corresponding gas sensors in the gas sensor array, and the output ends of the differential amplifier units are connected with the analog input ends of the analog-to-digital converter through a filter network; The digital output end of the analog-to-digital converter is connected with the MCU; The MCU is internally provided with a dynamic frequency adjusting unit, and comprises a timer module, an interrupt controller and a clock switching circuit; The interrupt controller is electrically connected with the interrupt signal output end of the wireless communication module, and when the wireless communication module generates a data receiving and transmitting interrupt signal, the timer module is triggered to start counting the high-frequency time period; The timer module configures a preset transceiving duration threshold value, and generates a dormancy trigger signal after timing reaches the threshold value; The clock switching circuit receives an interrupt signal or a sleep trigger signal, and switches the MCU main frequency to a high frequency mode in response to the interrupt signal when the interrupt signal is received, and switches the MCU main frequency to a low frequency mode in response to the sleep trigger signal when the sleep trigger signal is received.
2. The sensor array-based cloud embedded gas detection system of claim 1, wherein the gas sensor array comprises at least two gas sensors, each gas sensor electrically connected to an input of the signal acquisition module.
3. The cloud embedded gas detection system based on the sensor array of claim 1, wherein the wireless communication module is specifically a Zigbee communication module, and the Zigbee communication module is in communication connection with the cloud server through a Zigbee gateway.
4. The cloud embedded gas detection system based on the sensor array of claim 3, wherein the Zigbee communication module comprises a Zigbee radio frequency transceiver and an onboard loop antenna, and the onboard loop antenna is electrically connected with the Zigbee radio frequency transceiver.
5. The sensor array-based cloud embedded gas detection system of claim 1, wherein the gas sensor array employs standardized mechanical and electrical interfaces that support access to the gas sensor via plug and play.
6. The cloud embedded gas detection system based on the sensor array of claim 1, wherein the sensor node system comprises a power supply system, wherein the power supply system comprises a lithium battery pack, a power management chip and a voltage monitoring unit; The output end of the lithium battery pack is electrically connected with the input end of the power management chip, and the output end of the power management chip supplies power to each module after passing through the filter circuit; the voltage monitoring unit is in communication connection with a power supply monitoring pin of the MCU.
7. The cloud embedded gas detection system based on the sensor array of claim 1, wherein the sensor node system further comprises an interaction system, wherein the interaction system comprises a touch liquid crystal screen, an audible and visual alarm and physical keys; the touch type liquid crystal screen is connected with the MCU through a data bus; The audible and visual alarm is connected with a general purpose input/output GPIO pin of the MCU; the physical key is connected to an external interrupt pin of the MCU in an interrupt triggering mode.
8. The sensor array-based cloud embedded gas detection system of claim 1, wherein the terminal system is communicatively coupled to the sensor node system via a cloud server.

Description

Cloud embedded gas detection system based on sensor array Technical Field The application belongs to the technical field of gas detection, and particularly relates to a cloud embedded gas detection system based on a sensor array. Background With the rapid development of industrial automation and intelligence, a gas detection system based on a sensor array is widely applied in the fields of industrial safety monitoring, environment monitoring and the like. In the prior art, the sensor array gas detection system mainly has the following problems that firstly, the sensor arrays of most systems are connected by wires, the size and the power consumption of the system are increased, the problems of difficult wiring and high cost exist, crosstalk and imbalance among multiple paths of signals are easy to cause, and secondly, the system generally adopts a local embedded processor to conduct data analysis and is limited by the performance and the storage capacity of the embedded processor, and when the requirement of a specific data processing task on calculation power is high or the data volume of the specific data processing task is large, the embedded processor is difficult to execute the specific data processing task. Disclosure of utility model Aiming at the defects of the prior art, the application aims to provide a cloud embedded detection system based on a sensor array, which is characterized in that a plurality of nodes are wirelessly networked, remote monitoring is supported through cloud cooperative processing, the flexibility and the expandability of the system are improved, the maintenance cost and the deployment difficulty are reduced, and the problems that the traditional sensor array system mostly adopts wired connection, has difficult wiring in an industrial environment, has high node cost and is difficult to expand nodes are solved. In order to achieve the above purpose, the application provides a cloud embedded gas detection system based on a sensor array, which comprises a plurality of sensor node systems, a cloud server and a terminal system; The sensor node system comprises a gas sensor array, a signal acquisition module, a microcontroller unit MCU and a wireless communication module; The output end of the gas sensor array is electrically connected with the input end of the signal acquisition module, and the output end of the signal acquisition module is electrically connected with the input end of the MCU; The MCU is in communication connection with the cloud server through the wireless communication module; the terminal system is connected with the cloud server through a network. In one possible implementation, the gas sensor array comprises at least two gas sensors, each gas sensor being electrically connected to an input of the signal acquisition module. In one possible implementation manner, the wireless communication module is specifically a Zigbee communication module, and the Zigbee communication module is in communication connection with the cloud server through a Zigbee gateway. In one possible implementation, the Zigbee communication module includes a Zigbee radio frequency transceiver and an on-board loop antenna electrically connected to the Zigbee radio frequency transceiver. In one possible implementation, the signal acquisition module includes a differential amplification circuit and an analog-to-digital converter; The differential amplifying circuit comprises a plurality of differential amplifier units, the input ends of the differential amplifier units are respectively connected with corresponding gas sensors in the gas sensor array, and the output ends of the differential amplifier units are connected with the analog input ends of the analog-to-digital converter through a filter network; the digital output end of the analog-to-digital converter is connected with the MCU. In one possible implementation, the MCU is internally provided with a dynamic frequency adjustment unit, and comprises a timer module, an interrupt controller and a clock switching circuit; The interrupt controller is electrically connected with the interrupt signal output end of the wireless communication module, and when the wireless communication module generates a data receiving and transmitting interrupt signal, the timer module is triggered to start counting the high-frequency time period; The timer module configures a preset transceiving duration threshold value, and generates a dormancy trigger signal after timing reaches the threshold value; The clock switching circuit receives an interrupt signal or a sleep trigger signal, and switches the MCU main frequency to a high frequency mode in response to the interrupt signal when the interrupt signal is received, and switches the MCU main frequency to a low frequency mode in response to the sleep trigger signal when the sleep trigger signal is received. In one possible implementation, the gas sensor array employs standardized mechanical and electrical inter