CN111818161A - Fire extinguisher equipment condition monitoring device based on Internet of things and working method thereof - Google Patents
Fire extinguisher equipment condition monitoring device based on Internet of things and working method thereof Download PDFInfo
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Abstract
The invention discloses a fire extinguisher equipment condition monitoring device based on the Internet of things and a working method thereof, and relates to the field of data acquisition and monitoring, wherein the fire extinguisher equipment condition monitoring device comprises a central control and processing module, an environmental condition acquisition module, an NB-IoT communication module, a GSM communication module, a fire extinguisher equipment pressure dial plate image acquisition module, a motion detection module and an RS232 interface module, wherein the environmental condition acquisition module, the NB-IoT communication module, the GSM communication module, the fire extinguisher equipment pressure dial plate image acquisition module, the motion detection module and the RS232 interface module are connected with the central control and processing module, and the NB-IoT communication module and the GSM communication module are respectively connected with a server through a base station. The invention realizes remote monitoring and management of the condition of the fire extinguisher equipment by acquiring and locally processing data such as environment temperature and humidity, a pressure dial of the fire extinguisher equipment and the like and uploading the data to a server by utilizing an NB-IoT module or a GSM module.
Description
Technical Field
The invention relates to the field of equipment data acquisition and monitoring of the Internet of things, in particular to a fire extinguisher equipment condition monitoring device based on the Internet of things and a working method thereof.
Background
The fire extinguisher is stored in public places as a common fire extinguishing facility, can quickly extinguish fire in the early stage of a fire and has an important function. However, the current fire extinguisher configuration has the problems of insufficient air pressure, unreasonable storage environment, improper classification, unobvious configuration place and the like, and the safety function and the use function of fire fighting equipment such as the fire extinguisher and the like can be threatened. At present, the fire extinguisher is inspected by adopting a human eye observation mode, the period is 30 days, the price is 50-100 yuan/unit, and the fire extinguisher inspection method has the defects of untimely inspection and high labor cost. Meanwhile, the fire extinguisher is not enough to be configured, the problems that the configuration place is not obvious, the configuration environment is not suitable and the like exist at present, the emergency use of the fire extinguisher is extremely easy to be influenced, and once a fire disaster happens, the risk of fire hazard expansion is improved. Therefore, the method has great significance for solving the problems of high checking cost, low checking efficiency, improper storage environment, counterfeit and pseudo-inferior and the like of the fire extinguisher equipment at lower cost.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a fire extinguisher equipment condition monitoring device based on the Internet of things and a working method thereof.
The technical scheme of the invention is as follows: a fire extinguisher equipment condition monitoring device based on the Internet of things comprises a central control and processing module, an NB-IoT communication module, a GSM communication module, an environmental condition acquisition module, a fire extinguisher equipment pressure dial plate image acquisition module, a motion detection module and an RS232 interface module, wherein the NB-IoT communication module, the GSM communication module, the environmental condition acquisition module, the fire extinguisher equipment pressure dial plate image acquisition module, the motion detection module and the RS232 interface module are connected with the central control and processing module, and the NB-IoT communication module and the GSM communication module are respectively connected with a server through base stations.
The NB-IoT module adopts an M5311 module, is connected with the central control and processing module through a UART interface, is provided with an NB-IoT base station in a use range and is used for transmitting communication data of the NB-IoT module to the server, and the NB-IoT module adopts a TCP Socket and an HTTP protocol to communicate with the server, processes data acquired by the environmental condition acquisition module, the fire extinguisher equipment pressure dial plate image acquisition module and the motion detection module, and realizes data transmission by utilizing a JSON format.
The GSM module is connected with the central control and processing module through a UART interface, the RS232 interface module is connected with the central control and processing module and the GSM communication module through a UART bus and used for serial port communication among the modules, the GSM module converts data collected by the environmental condition collection module, the fire extinguisher equipment pressure gauge disk image collection module and the motion detection module into IP data through the RS232 interface module and uploads the IP data to the server through a 2G network, and a GSM base station used for 2G communication is installed in a use range and used for transmitting communication data of the GSM module to the server.
The environment condition acquisition module adopts a DHT11 module, is connected with the central control and processing module through a single bus protocol, and is used for acquiring the temperature and humidity of the environment where the fire extinguisher equipment is located.
Fire extinguisher equipment pressure dial plate image acquisition module includes that camera module, light filling LED lighting system, image processing module and fire extinguisher encircle mechanical structure, the camera module adopts 4X flexible zoom, supports USB3.0 for the reading of periodic collection barometer, mechanical structure can be installed on traditional fire extinguisher is embraced to the fire extinguisher, camera module and light filling LED lighting system fix and encircle mechanical structure at the fire extinguisher, image processing module is connected with camera module and light filling LED lighting system respectively, can real-time supervision picture luminance, dynamic adjustment light filling LED lighting system light filling.
A working method of a fire extinguisher equipment condition monitoring device based on the Internet of things comprises the following steps:
the method comprises the following steps: in a fire extinguisher placement area, an NB-IoT base station or a GSM base station is deployed for communication;
step two: the fire extinguisher installation method comprises the following steps that a fire extinguisher equipment condition monitoring and managing device based on the Internet of things is installed in a fire extinguisher installation area, and a fire extinguisher equipment pressure dial image acquisition module, an environmental condition acquisition module and a motion detection module are configured according to the installation position and used for acquiring fire extinguisher equipment environmental data;
step three: and configuring an NB-IoT module or a GSM module according to the network signal intensity of the current fire extinguisher placement area, realizing the communication between the fire extinguisher equipment condition monitoring and managing device based on the Internet of things and the server, and sending the environmental data of the fire extinguisher equipment to the server according to an NB-IoT format or a GSM format.
The image acquisition and transmission method of the fire extinguisher equipment pressure dial plate image acquisition module comprises the following steps:
1) the central control and processing module issues an image acquisition command;
2) the fire extinguisher equipment pressure dial plate image acquisition module is configured and starts a DCMI bus, and image data acquired by the fire extinguisher equipment pressure dial plate image acquisition module is ready to be transmitted to the central control and processing module through the DCMI bus;
3) the fire extinguisher equipment pressure dial image acquisition module keeps a clock control signal of a DCMI interface synchronous with an image data clock control pin PIXCLK of the central control and processing module, and changes along the rising edge and the falling edge of a pixel clock according to the polarity of the pixel clock, and HSYNC HREF signals indicate the beginning and the end of an image data line and are used for receiving each line of image data transmitted by the fire extinguisher equipment pressure dial image acquisition module; the VSYNC signal indicates the beginning and the end of a frame and is used for receiving each frame of image data transmitted by a pressure dial image acquisition module of fire extinguisher equipment;
4) the central control and processing module obtains compressed image information acquired by the fire extinguisher equipment pressure dial plate image acquisition module, and decompresses the compressed image information to obtain a BMP original data format.
The image processing and dial plate pressure identification algorithm of the fire extinguisher equipment pressure dial plate image acquisition module comprises the following steps:
1) the fire extinguisher equipment pressure dial plate image acquisition module acquires image data acquired by the CMOS camera through the DCMI interface;
2) the fire extinguisher equipment pressure dial plate image acquisition module utilizes a Gaussian smoothing filter to carry out smoothing filtering on the image;
3) the fire extinguisher equipment pressure dial plate image acquisition module converts image data from RGB color gamut into HSV color gamut;
4) the fire extinguisher equipment pressure dial plate image acquisition module respectively calibrates the quantity of red, yellow and green pixel points in an image in an HSV color gamut;
5) the fire extinguisher equipment pressure dial plate image acquisition module compares the quantity of red, yellow and green pixel points in the image with reference quantity respectively to obtain the position of a dial plate pointer.
The motion detection module comprises an MPU6050 acceleration sensing module, a gyroscope, an accelerometer and a magnetometer, and the attitude is resolved by quaternion software, and the method specifically comprises the following steps:
1) the central control and processing module reads quaternion data output by the MPU6050 acceleration sensing module once through an IIC bus;
2) the central control and processing module defines a rotation matrix in a built-in DSP operation unit, and expresses quaternion data as the rotation matrix:
3) the central control and processing module carries out inverse operation once in the built-in DSP operation unit to obtain the attitude information carried by the quaternion.
In the third step, the network communication flow based on the NB-IoT communication module or the GSM communication module is as follows: starting the NB-IoT module or the GSM communication module, and reading SIM card information, including card number information, operator information and the like; the NB-IoT module or the GSM communication module performs network registration; after the network registration is successful, the NB-IoT module or the GSM communication module establishes a TCP long connection and an HTTP short connection with the server; after the TCP long connection and the HTTP short connection are successfully established, the NB-IoT module or the GSM communication module starts to receive downlink data sent by the server through the TCP long connection and prepares to report the data to the server through the HTTP short connection.
The invention has the following beneficial effects:
1. NB-IoT or GSM dual-module communication is adopted, so that the communication scene of the equipment can be increased;
2. the low-power consumption communication module is adopted, so that the cruising ability of the equipment can be improved;
3. the environment condition detection method with multi-sensor fusion is adopted, so that the environment monitoring and evaluation effects can be improved;
4. and a local image processing algorithm is adopted, so that the operation burden of a server can be reduced.
The device and the method are suitable for remote monitoring and management of the condition of fire extinguisher equipment, can read and analyze the state of the air pressure dial of the fire extinguisher equipment, realize acquisition of equipment environment data and a data communication protocol based on an NB-IoT protocol, realize identification of key data of the fire extinguisher in a coordinated manner, upload the key data to an electronic recording card, realize efficient remote supervision with lower cost, and are beneficial to breaking the situations of high labor cost, long monitoring interval and difficult data flow of traditional fire fighting equipment management.
Drawings
FIG. 1 is a schematic view of the present invention in its entirety;
FIG. 2 is an access flow diagram of the present invention;
in the figure: the system comprises a 1-central control and processing module, a 2-NB-IoT communication module, a 3-GSM communication module, a 4-motion detection module, a 5-RS232 interface module, a 6-environmental condition acquisition module, a 7-fire extinguisher equipment pressure dial plate image acquisition module and an 8-2.4G frequency band antenna system.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
the fire extinguisher equipment condition monitoring device based on the Internet of things provided by the embodiment of the invention realizes remote monitoring and management of the condition of fire extinguisher equipment by acquiring and locally processing data such as environment temperature and humidity, a pressure dial plate of the fire extinguisher equipment and the like and uploading the data to a server by utilizing an NB-IoT module or a GSM module. In addition, this embodiment still provides a fire extinguisher equipment condition monitoring and management working method based on above-mentioned equipment.
Example 1
As shown in fig. 1, a fire extinguisher equipment condition monitoring device based on the internet of things comprises a central control and processing module 1, an NB-IoT communication module 2, a GSM communication module 3, a motion detection module 4, an RS232 interface module 5, an environmental condition acquisition module 6 and a fire extinguisher equipment pressure dial plate image acquisition module 7. The NB-IoT communication module 2, the GSM communication module 3, the environmental condition acquisition module 6, the fire extinguisher equipment pressure dial plate image acquisition module 7, the motion detection module 4 and the RS232 interface module 5 are connected with the central control and processing module 1, the central control and processing module 1 is connected with a 2.4G frequency band antenna system 8, the NB-IoT communication module 2 and the GSM communication module 3 are respectively connected with a server through a base station, and the central control and processing module 1 adopts a microcontroller MCU control module.
The NB-IoT module 2 adopts an M5311 industrial-grade low-power-consumption module, the NB-IoT communication module 2 is connected with the central control and processing module 1 through a UART interface and is used for realizing data transceiving of NB-IoT format, an NB-IoT base station is installed in a use range, and the NB-IoT base station transmits communication data of the NB-IoT module to a server. The NB-IoT module is communicated with the server by adopting a TCP Socket and an HTTP protocol, processes data collected by the environmental condition collection module, the fire extinguisher equipment pressure dial plate image collection module and the motion detection module, and realizes data transmission by utilizing a JSON format. Specifically, the NB-IoT module establishes a TCP long connection and an HTTP short connection with the server through the Socket interface; in TCP long connection, the NB-IoT module uploads the dial pressure condition and the environmental condition to the server at regular time, receives a control and query command issued by the server and makes a corresponding response; in the HTTP short connection, an NB-IoT module specifies the format and the size of image data to be uploaded in an httpreq header through a POST method, and uploads the image by adopting a multipart/form-data type; and after the uploading is finished, the server returns a JSON (Java Server open) format response to inform the image data receiving condition.
The GSM communication module 3 is connected with the central control and processing module 1 through a UART interface and used for realizing data receiving and transmitting in a GSM format, and a GSM base station used for 2G communication is installed in a use range and used for transmitting communication data of the GSM module to a server.
The motion detection module 4 is connected with the central control and processing module 1 through an IIC interface, adopts an MPU6050 acceleration sensing module which comprises a gyroscope, an accelerometer and a magnetometer, and utilizes quaternion software to calculate the attitude for acquiring the attitude angle of the fire extinguisher equipment and the motion acceleration in each direction.
The basic steps of the motion detection module 4 using quaternion software to resolve the attitude are as follows:
1) the central control and processing module reads quaternion data output by the MPU6050 acceleration sensing module once through an IIC bus;
2) the central control and processing module defines a rotation matrix in a built-in DSP operation unit, and expresses quaternion data as the rotation matrix:
3) the central control and processing module carries out inverse operation once in the built-in DSP operation unit to obtain the attitude information carried by the quaternion.
And the RS232 interface module 5 is connected with the central control and processing module 1 through a UART interface and is used for serial communication between modules and equipment.
The environment condition acquisition module 6 is connected with the central control and processing module 1 through a single bus protocol, adopts a DHT11 module and is used for acquiring the environment temperature and humidity of the fire extinguisher equipment.
The fire extinguisher equipment pressure dial plate image acquisition module 7 is connected with the central control and processing module 1 through a DCMI interface, and the fire extinguisher equipment pressure dial plate image acquisition module 7 comprises an OV5640 camera module, a light supplement LED lighting system, an image processing module and a fire extinguisher encircling mechanical structure. The OV5640 camera module is a key component of a light supplementing and photographing system, a 4X telescopic zoom lens is adopted, USB3.0 is supported, the image transmission speed is higher, and a high-definition 1/2.7-inch CMOS is widely applied to the fields of mode recognition, industrial detection, machine vision, safety monitoring and the like. The fire extinguisher encircles installing on traditional fire extinguisher that the device can be convenient, the fire extinguisher encircles mechanical structure and can install on traditional fire extinguisher, image processing module is connected with camera module and light filling LED lighting system respectively, and the camera module utilizes the camera periodic collection barometer reading, and image processing module can real-time supervision picture luminance simultaneously, and developments light filling LED lighting system light filling ensures that the camera can normally work under the dark surrounds, reads fire extinguisher real-time status index. And the color stability of the image collected by the camera is ensured. The image acquisition and transmission method of the fire extinguisher equipment pressure dial plate image acquisition module 7 comprises the following steps:
1) the central control and processing module issues an image acquisition command;
2) the fire extinguisher equipment pressure dial plate image acquisition module is configured and starts a DCMI bus, and image data acquired by the fire extinguisher equipment pressure dial plate image acquisition module is ready to be transmitted to the central control and processing module through the DCMI bus;
3) the fire extinguisher equipment pressure dial image acquisition module keeps a clock control signal of a DCMI interface synchronous with an image data clock control pin PIXCLK of the central control and processing module, and changes along the rising edge and the falling edge of a pixel clock according to the polarity of the pixel clock, and HSYNC HREF signals indicate the beginning and the end of an image data line and are used for receiving each line of image data transmitted by the fire extinguisher equipment pressure dial image acquisition module; the VSYNC signal indicates the beginning and the end of a frame and is used for receiving each frame of image data transmitted by a pressure dial image acquisition module of fire extinguisher equipment;
4) the central control and processing module obtains compressed image information acquired by the fire extinguisher equipment pressure dial plate image acquisition module, and decompresses the compressed image information to obtain a BMP original data format.
The fire extinguisher equipment pressure dial plate image acquisition module 7 adopts a localized image processing and dial plate pressure identification algorithm, and the specific method comprises the following steps:
1) the fire extinguisher equipment pressure dial plate image acquisition module acquires image data acquired by the CMOS camera through the DCMI interface;
2) the fire extinguisher equipment pressure dial plate image acquisition module utilizes a Gaussian smoothing filter to carry out smoothing filtering on the image;
3) the fire extinguisher equipment pressure dial plate image acquisition module converts image data from RGB color gamut into HSV color gamut;
4) the fire extinguisher equipment pressure dial plate image acquisition module respectively calibrates the quantity of red, yellow and green pixel points in an image in an HSV color gamut;
5) the fire extinguisher equipment pressure dial plate image acquisition module compares the quantity of red, yellow and green pixel points in the image with reference quantity respectively to obtain the position of a dial plate pointer.
Example 2
A working method for monitoring the condition of fire extinguisher equipment based on the Internet of things comprises the following steps:
the method comprises the following steps: in a fire extinguisher placement area, an NB-IoT base station or a GSM base station is deployed for communication;
step two: in the fire extinguisher placement area, install fire extinguisher equipment condition monitoring and management device based on thing networking. And a pressure dial image acquisition module 7, an environmental condition acquisition module 6 and a motion detection module 4 of the fire extinguisher equipment are configured according to the installation position and used for acquiring environmental data of the fire extinguisher equipment.
Step three: according to the network signal intensity of the current fire extinguisher placement area, an NB-IoT module or a GSM module is selected (the NB-IoT module is selected when the signal is strong, and the GSM module is selected when the signal is weak), communication between the fire extinguisher equipment condition monitoring and managing device based on the Internet of things and the server is achieved, and fire extinguisher equipment environment data are sent to the server according to the NB-IoT format or the GSM format.
In the third step, a network communication flow based on the NB-IoT communication module 2 or the GSM communication module 3 is as shown in fig. 2, specifically, the NB-IoT module 2 or the GSM communication module 3 is started to read SIM card information, including card number information and carrier information; the NB-IoT module 2 or the GSM communication module 3 performs network registration; after the network registration is successful, the NB-IoT module 2 or the GSM communication module 3 establishes a TCP long connection and an HTTP short connection with the server; after the TCP long connection and the HTTP short connection are successfully established, the NB-IoT module 2 or the GSM communication module 3 starts to receive downlink data sent by the server through the TCP long connection, and prepares to report the data to the server through the HTTP short connection.
The fire extinguisher key data acquisition system is suitable for remote monitoring and management of the condition of fire extinguisher equipment, can realize the state reading and analysis of the pressure gauge disc of the fire extinguisher equipment, realizes the acquisition of equipment environment data and a data communication protocol based on an NB-IoT protocol, realizes the identification of key data of the fire extinguisher cooperatively, can upload the data to an electronic recording card, gives an improvement direction, realizes efficient remote supervision with lower cost, and is favorable for breaking the situations of high cost, long monitoring interval and difficult data circulation of the traditional fire fighting equipment management.
Claims (10)
1. The utility model provides a fire extinguisher equipment condition monitoring devices based on thing networking, includes central control and processing module (1), NB-IoT communication module (2), GSM communication module (3), environmental condition collection module (6), fire extinguisher equipment pressure dial plate image acquisition module (7), motion detection module (4) and RS232 interface module (5), its characterized in that: the NB-IoT communication module (2), the GSM communication module (3), the environmental condition acquisition module (6), the fire extinguisher equipment pressure dial plate image acquisition module (7), the motion detection module (4) and the RS232 interface module (5) are connected with the central control and processing module (1), and the NB-IoT communication module (2) and the GSM communication module (3) are respectively connected with the server through base stations.
2. The fire extinguisher equipment condition monitoring device based on the internet of things as claimed in claim 1, wherein: the system comprises an NB-IoT module (2), a central control and processing module (1), an NB-IoT base station and a motion detection module (4), wherein the NB-IoT module (2) adopts an M5311 module, the NB-IoT module (2) is connected with the central control and processing module (1) through a UART interface, the NB-IoT base station is installed in a use range and used for transmitting communication data of the NB-IoT module (2) to a server, the NB-IoT module (2) adopts TCP Socket and HTTP protocols to communicate with the server, data collected by an environmental condition collection module (6), a fire extinguisher equipment pressure dial plate image collection module (7) and the motion detection module (4) are processed, and data transmission.
3. The fire extinguisher equipment condition monitoring device based on the internet of things as claimed in claim 1, wherein: GSM module (4) are connected with central control and processing module through the UART interface, RS232 interface module (6) be connected with central control and processing module (1) and GSM communication module through the UART bus for intermodule serial port communication, GSM module (4) convert the data of environmental condition collection module (6), fire extinguisher equipment pressure dial plate image acquisition module (7) and motion detection module (4) collection into IP data through RS232 interface module (6), upload the server through the 2G network, install the GSM basic station that is used for 2G communication in the application range, be used for transmitting the communication data of GSM module to the server.
4. The fire extinguisher equipment condition monitoring device based on the internet of things as claimed in claim 1, wherein: the environment condition acquisition module adopts a DHT11 module, is connected with the central control and processing module through a single bus protocol, and is used for acquiring the temperature and humidity of the environment where the fire extinguisher equipment is located.
5. The fire extinguisher equipment condition monitoring device based on the internet of things as claimed in claim 1, wherein: fire extinguisher equipment pressure dial plate image acquisition module (3) embrace mechanical structure including camera module, light filling LED lighting system, image processing module and fire extinguisher, the camera module adopts the flexible zoom of 4X, supports USB3.0 for the reading of periodic collection barometer, mechanical structure can be installed on traditional fire extinguisher is embraced to the fire extinguisher, camera module and light filling LED lighting system fix and embrace mechanical structure at the fire extinguisher, image processing module is connected with camera module and light filling LED lighting system respectively, can real-time supervision picture luminance, dynamic adjustment light filling LED lighting system light filling.
6. A working method of a fire extinguisher equipment condition monitoring device based on the Internet of things is characterized in that: the method comprises the following steps:
the method comprises the following steps: in a fire extinguisher placement area, an NB-IoT base station or a GSM base station is deployed for communication;
step two: the fire extinguisher installation method comprises the following steps that a fire extinguisher equipment condition monitoring and managing device based on the Internet of things is installed in a fire extinguisher installation area, and a fire extinguisher equipment pressure dial image acquisition module (7), an environmental condition acquisition module (6) and a motion detection module (4) are configured according to the installation position and used for acquiring fire extinguisher equipment environmental data;
step three: the method comprises the steps that an NB-IoT module or a GSM module is configured according to the network signal intensity of a current fire extinguisher placement area, communication between a fire extinguisher equipment condition monitoring and managing device based on the Internet of things and a server is achieved, and fire extinguisher equipment environment data are sent to the server according to an NB-IoT format or a GSM format.
7. The working method of the fire extinguisher equipment condition monitoring device based on the Internet of things as claimed in claim 6, characterized in that: the image acquisition and transmission method of the fire extinguisher equipment pressure dial plate image acquisition module comprises the following steps:
1) the central control and processing module issues an image acquisition command;
2) the fire extinguisher equipment pressure dial plate image acquisition module is configured and starts a DCMI bus, and image data acquired by the fire extinguisher equipment pressure dial plate image acquisition module is ready to be transmitted to the central control and processing module through the DCMI bus;
3) the fire extinguisher equipment pressure dial image acquisition module keeps a clock control signal of a DCMI interface synchronous with an image data clock control pin PIXCLK of the central control and processing module, and changes along the rising edge and the falling edge of a pixel clock according to the polarity of the pixel clock, and HSYNC HREF signals indicate the beginning and the end of an image data line and are used for receiving each line of image data transmitted by the fire extinguisher equipment pressure dial image acquisition module; the VSYNC signal indicates the beginning and the end of a frame and is used for receiving each frame of image data transmitted by a pressure dial image acquisition module of fire extinguisher equipment;
4) the central control and processing module obtains compressed image information acquired by the fire extinguisher equipment pressure dial plate image acquisition module, and decompresses the compressed image information to obtain a BMP original data format.
8. The working method of the fire extinguisher equipment condition monitoring device based on the Internet of things as claimed in claim 6, characterized in that: the image processing and dial plate pressure identification algorithm of the fire extinguisher equipment pressure dial plate image acquisition module (7) comprises the following steps:
1) the fire extinguisher equipment pressure dial plate image acquisition module acquires image data acquired by the CMOS camera through the DCMI interface;
2) the fire extinguisher equipment pressure dial plate image acquisition module utilizes a Gaussian smoothing filter to carry out smoothing filtering on the image;
3) the fire extinguisher equipment pressure dial plate image acquisition module converts image data from RGB color gamut into HSV color gamut;
4) the fire extinguisher equipment pressure dial plate image acquisition module respectively calibrates the number of red, yellow and green pixel points in an image in an HSV color gamut;
5) the fire extinguisher equipment pressure dial plate image acquisition module compares the quantity of red, yellow and green pixel points in the image with reference quantity respectively to obtain the position of a dial plate pointer.
9. The working method of the fire extinguisher equipment condition monitoring device based on the Internet of things as claimed in claim 6, characterized in that: the motion detection module (4) comprises an MPU6050 acceleration sensing module, a gyroscope, an accelerometer and a magnetometer, and solves the attitude by quaternion software, and the method specifically comprises the following steps:
1) the central control and processing module reads quaternion data output by the MPU6050 acceleration sensing module once through an IIC bus;
2) the central control and processing module defines a rotation matrix in the built-in DSP operation unit, and expresses quaternion data as the rotation matrix:
3) and the central control and processing module performs inverse operation once in the built-in DSP operation unit to obtain the attitude information carried by the quaternion.
10. The working method of the fire extinguisher equipment condition monitoring device based on the Internet of things as claimed in claim 6, characterized in that: in the third step, the network communication flow based on the NB-IoT communication module (2) or the GSM communication module (3) is as follows: the NB-IoT module (2) or the GSM communication module (3) is started to read SIM card information, including card number information, operator information and the like; the NB-IoT module (2) or the GSM communication module (3) performs network registration; after the network registration is successful, the NB-IoT module (2) or the GSM communication module (3) establishes a TCP long connection and an HTTP short connection with the server; after the TCP long connection and the HTTP short connection are successfully established, the NB-IoT module (2) or the GSM communication module (3) starts to receive downlink data sent by the server through the TCP long connection and prepares to report the data to the server through the HTTP short connection.
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