CN211656175U - Colliery is many information sensing devices of environment in pit based on thing networking - Google Patents

Abstract

The utility model discloses a colliery is environmental multi-information perception device in pit based on thing networking belongs to communication and environmental monitoring field. The device uses an FPGA as a main control chip and transmits real-time voice video and environmental parameter information under a coal mine to a ground control center through connection with a camera, a microphone, a temperature and humidity sensor, a gas concentration sensor and a dust concentration sensor; the optical fiber transmission is realized by connecting the photoelectric conversion module, and meanwhile, the transmission efficiency is improved by compressing the image acquired by the camera; the detection of the life body can be carried out by connecting with the life detection radar; by connecting to NB-loT, emergency communication may be available. The device greatly improves the underground coal mine environment detection elements, the communication quality and the efficiency through a multi-sensor fusion technology and an optical fiber communication technology, timely discovers and pre-warns the monitored environment information and the position with problems, and ensures the safety production of a coal mine.

Description

A multi-information sensing device for underground coal mine environment based on the Internet of Things

technical field

The utility model belongs to the field of communication and environmental monitoring, and is applied to the transmission of underground coal mine environment and real-time images, in particular to a multi-information sensing device for underground coal mine environment based on the Internet of Things.

Background technique

The safety of coal mines is the first priority of coal mine production. Coal mine safety accidents often occur due to poor supervision, poor safety awareness of miners, and improper human operation. In order to detect dangerous situations in time and give early warning, remote information sensing devices in coal mines are particularly important. The information sensing equipment used in the coal mine industry has become an important technical means of coal mine safety production and management. Especially in important places such as underground substations, mine personnel often conduct inspections and operations, and ensuring the safety of staff and equipment is the top priority of coal mine safety; The distribution of cables is staggered, the lights are dim, and the incidence of safety accidents is high. Real-time information perception in the underground can not only obtain the working status and environmental information of coal mines in time, but also has important practical value for dispatching command and personnel behavior analysis in emergencies. Therefore, it is very meaningful to study communication and environment perception devices.

With the development of the Internet of Things technology, more and more communication and environmental perception devices are produced, but the functions are relatively simple. Most products only contain a single function of video transmission, voice transmission or environmental monitoring. In the current coal mine monitoring device, users have to install a variety of equipment in order to have various functions, which leads to problems such as mismatching of the upper computer terminals and different operations, and increases the cost of human and financial resources.

Utility model content

Purpose of the utility model: Aiming at the deficiencies of coal mine underground communication and environmental monitoring in the current market and the problems of singleness and low efficiency of the prior art, the present utility model proposes a multi-information sensing device for the coal mine underground environment based on the Internet of Things, which can be used in Under the coal mine, the video and voice communication with the ground command center and the environmental monitoring of the underground coal mine roadway are realized through optical fiber. At the same time, the use of optical fiber transmission technology can effectively resist interference. The device integrates communication and perception, saving cost and installation time, and at the same time reducing the problems of incompatibility of equipment from different manufacturers and multiple display terminals.

Technical scheme: In order to realize the purpose of the utility model, the technical scheme adopted by the utility model is: a multi-information sensing device for the underground coal mine environment based on the Internet of Things, including a box body, an FPGA, an audio and video communication module, an environmental monitoring module, a Life detection module, LCD screen, headphone jack, call button, sound and light alarm, energy storage power supply, optical fiber interface, optical fiber and power cord;

The audio and video communication module includes a camera, a microphone, a speaker, and an audio power amplifier module; the speaker is powered by a power line, and is connected to the FPGA through a data line; the audio power amplifier module is electrically connected to the speaker for amplifying the volume of the speaker; The environmental monitoring module includes a temperature and humidity sensor, a gas concentration sensor, and a dust concentration sensor; the life detection module includes an ultra-wideband life detection radar module and an NB-loT module; the ultra-wideband life detection radar module is used for a mine disaster detection device Whether there is life around, the NB-loT module is used for emergency communication when the optical fiber line is damaged;

The FPGA is respectively connected with a camera, a microphone, an LCD screen, a headphone jack, a temperature and humidity sensor, a gas concentration sensor, a call request button, a speaker, an NB-loT module, a sound and light alarm, an ultra-wideband life detection radar module, and a dust concentration sensor. ; The FPGA is connected with the optical fiber and the power line through a photoelectric conversion circuit and a voltage stabilizing circuit respectively, and the power line supplies power to the device through the step-down and voltage stabilizing circuit; the energy storage power supply is used to provide backup for the device when the power is cut off. power supply;

The FPGA is used to receive and process audio and video signals obtained by cameras and microphones, and transmit them to the command center through optical fibers; at the same time, it is used to receive and process the temperature and humidity data of the environment detected by the temperature and humidity sensor, and the gas concentration sensor to detect the flammable and explosive environment of the environment. Gas concentration data and dust concentration sensors detect the density data of dust particles in the environment, and convert the corresponding data into electrical signals and send them to the LCD screen for display; they are also used to control sound and light alarms for alarming, and send the command center through optical fibers. The transmitted voice signal is sent to the speaker for playback;

Among them, the camera, microphone, LCD screen, headphone jack, temperature and humidity sensor, gas concentration sensor, and call button are all placed in front of the box; the speakers are placed on both sides of the box, and the NB-loT module is installed on one side of the box; The sound and light alarm and the ultra-wideband life detection radar module are placed above the box; the dust concentration sensor is placed under the box; the optical fiber interface, optical fiber and power cord are placed behind the box; FPGA, energy storage power supply and audio power amplifier module are placed Inside the box, the placement position follows the principle of safe placement, but the position is not unique.

Further, the device further includes a power detection circuit, which is electrically connected to the energy storage power supply and the FPGA, respectively, for acquiring the real-time power of the energy storage power supply and displaying it through the LCD.

Further, the FPGA is connected to the spray device or the exhaust device through the data interface, and is used for transmitting the dust concentration exceeding signal or the abnormal gas concentration signal to the spray device or the exhaust device as a start signal of the device.

The utility model utilizes the FPGA chip to control the camera, the microphone, the speaker, the audio power amplifier module, the temperature and humidity sensor, the gas concentration sensor, the dust concentration sensor and the life detection radar, and transmits the real-time voice video and environmental parameter data in the coal mine to the ground control center. The display screen of the underground device can also view the parameters of various indicators in the underground environment in real time. Data is transmitted through optical fiber or NB-loT module. The utility model has complete functions, is portable, and has strong flexibility, realizes real-time perception of coal mine roadway environmental information, and discovers problems in time. At the same time, it can communicate with the ground control center in real time and transmit the roadway video information to the ground control center terminal through optical fiber.

Considering that the underground tunnel is longer, more devices of the present invention are needed, even if the optical fiber can be used for data transmission with large bandwidth, in order to further improve the transmission speed and efficiency, the device of the present invention can pass the FPGA to the image collected by the camera. The processing chip performs compression processing and then transmits it.

Beneficial effects: Compared with the prior art, the technical scheme of the present utility model has the following beneficial technical effects:

The device of the utility model can make the ground command center communicate with the underground coal mine in real time and quickly, and can monitor the environmental conditions of the coal mine roadway in real time, reduce the occurrence of disasters caused by gas explosion, bad environment, poor communication and other problems in the underground coal mine, and make the underground coal mine Workers have an extra layer of protection; the device can also effectively reduce or even prevent operations that violate safety production regulations in underground tunnels. When a disaster occurs in a coal mine due to force majeure, the device's voice and video calls and life detection functions can provide timely and effective information for rescue, making the rescue work more accurate and efficient.

The device of the utility model transmits data through the optical fiber, which greatly improves the anti-interference performance and the transmission speed. The use of optical fiber enables the device to transmit voice, video, and various sensor signals at the same time without information delay. Considering that the optical fiber may break in the event of a collapse, the NB-loT module of the device can provide emergency communication for the device in this case, while the energy storage power can ensure that the device can still be used normally in the event of a power outage.

Description of drawings

Fig. 1 is the structural front view of embodiment;

Figure 2 is a cross-sectional interior view of the embodiment;

Fig. 3 is the left side view of the structure of the embodiment;

Fig. 4 is the structural right side view of the embodiment;

Fig. 5 is the working flow chart of the device;

6 is a schematic diagram of data stream transmission;

Among them, 1-box, 2-LCD screen, 3-request call button, 4-camera, 5-microphone, 6-headphone jack, 7-speaker, 8-sound and light alarm, 9-temperature and humidity sensor, 10- Gas concentration sensor, 11-dust concentration sensor, 12-ultra-wideband life detection radar module, 13-NB-loT module, 14-power cord, 15-optical fiber, 16-optical fiber interface, 17-energy storage power supply, 18-audio amplifier Module, 19-FPGA main control chip.

Detailed ways

The technical solutions of the present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

A multi-information sensing device for underground coal mine environment based on the Internet of Things described in this utility model, as shown in Figures 1-4, includes a box 1, an FPGA main control chip 19, an audio and video communication module, an environmental monitoring module, and a life detection module Module, LCD screen 2, headphone jack 6, call request button 3, sound and light alarm 8, energy storage power supply 17, optical fiber interface 16, optical fiber 15 and power cord 14;

The audio and video communication module includes a camera 4, a microphone 5, a speaker 7, and an audio power amplifier module 18; the speaker 7 is powered by a power line 14, and is connected to the FPGA main control chip 19 through a data line; the audio power amplifier module 18 and The speaker 7 is electrically connected for amplifying the volume of the speaker 7;

The environment monitoring module includes a temperature and humidity sensor 9, a gas concentration sensor 10, and a dust concentration sensor 11; the measurement range of the dust concentration sensor 11 is 500-50000ppm, and the temperature detection range of the temperature and humidity sensor 9 is -20-120°C , the temperature and humidity sensor 9 humidity sensor monitoring range is 10%-90% RH;

The dust concentration sensor 11 used in this embodiment is a laser scattering type sensor, which can monitor and display the environmental dust concentration in real time under no wind and natural wind conditions.

The life detection module includes an ultra-wideband life detection radar module 12 and an NB-loT module 13; the ultra-wideband life detection radar module 12 is used to detect whether there is life around the device when a mine accident occurs, and the NB-loT module 13 is used to detect whether there is life around the device. For emergency communications when fiber optic lines are broken.

Among them, the camera 4, the microphone 5, the LCD screen 2, the headphone jack 6, the temperature and humidity sensor 9, the gas concentration sensor 10, and the call request button 3 are all placed in front of the box 1; the speakers 7 are placed on both sides of the box 1, NB The loT module 13 is installed on one side of the box body 1; the sound and light alarm 8 and the ultra-wideband life detection radar module 12 are placed above the box body 1; the dust concentration sensor 11 is placed under the box body 1; the optical fiber interface 16, the optical fiber 15 and the The power cords 14 are placed behind the box body 1; the FPGA main control chip 19, the energy storage power supply 17 and the audio power amplifier module 18 are placed inside the box body 1, and their placement positions follow the principle of safe placement, but the positions are not unique.

The FPGA main control chip 19 is respectively connected with the camera 4, the microphone 5, the LCD screen 2, the headphone jack 6, the temperature and humidity sensor 9, the gas concentration sensor 10, the call request button 3, the speaker 7, the NB-loT module 13, and the sound and light alarm. 8, the ultra-wideband life detection radar module 12, and the dust concentration sensor 11 are connected; the FPGA main control chip 19 is connected with the optical fiber 15 and the power line 14 through a photoelectric conversion circuit and a voltage stabilizing circuit respectively, and the power line 14 is connected by a voltage reduction and The voltage stabilizing circuit supplies power to the device; the energy storage power supply 17 is used to provide backup power for the device when the power is cut off.

The FPGA main control chip 19 is used to receive and process the audio and video signals obtained by the camera 4 and the microphone 5, and transmit them to the command center through the optical fiber 15; The sensor 10 detects the concentration data of flammable and explosive gases in the environment, and the dust concentration sensor 11 detects the density data of dust particles in the environment, and converts the corresponding data into electrical signals and sends them to the LCD screen 2 for display; it is also used to control sound and light The alarm device 8 gives an alarm, and sends the voice signal transmitted by the command center through the optical fiber 15 to the speaker 7 for playback.

The appearance of the device is a rectangular parallelepiped, and it is made of thickened metal and has an explosion-proof effect. Except for the energy storage power supply 17, the FPGA main control chip 19, and the audio power amplifier module 18, which are placed inside the device and cannot be seen from the outside, other components can be observed from the outside. Among them, the FPGA main control chip 19 adopts a high-performance FPGA, and the camera 4, the microphone 5, the headphone jack 6, the temperature and humidity sensor 9, the gas concentration sensor 10, the dust concentration sensor 11, and the ultra-wideband life detection radar module 12 are used as the input of the device. Equipment, respectively, are distributed on the surface of the device. The speaker 7, the sound and light alarm 8, and the NB-loT module 13 are used as the output part of the device. The FPGA main control chip 19 determines whether to operate the output component according to the received external signal. The temperature and humidity sensor 9 and the gas concentration sensor 10 are placed in front of the device to enable the sensors to have sufficient and large-area contact with the environment after installation, so as to achieve an accurate monitoring effect; the dust concentration sensor 11 is placed below to better collect Dust to accurately detect dust concentration; LCD screen 2, call button 3, camera 4, microphone 5, earphone jack 6 are placed in front of the device for easy operation and viewing; ultra-wideband life detection radar module 12, sound and light alarm 8 The top of the device is for better detection and alarm information to be found more easily; the speakers 7 are placed on the left and right sides of the device to allow the sound to travel farther in the roadway; the NB-loT module 13 is placed on the side of the device to Better signal reception; the optical fiber interface 16 and the power cord 14 are placed behind the device in order to hide it after installation, so as to avoid loosening of the interface and abrasion of the skin of the power cord caused by long-term touching.

In this embodiment, the device further includes a power detection circuit, which is electrically connected to the energy storage power supply 17 and the FPGA main control chip 19, respectively, and is used to obtain the real-time power of the energy storage power supply 17 and perform the operation through the LCD. show. In this embodiment, the FPGA main control chip 19 is connected to the spray device or the exhaust device through the data interface, and is used to transmit the dust concentration exceeding signal or the abnormal gas concentration signal to the spray device or the exhaust device as the start signal of the device .

As shown in FIG. 5 , the present invention uses the FPGA main control chip 19 to control the camera 4, the microphone 5, the speaker 7, the audio power amplifier module 18, the temperature and humidity sensor 9, the gas concentration sensor 10, the dust concentration sensor 11, and the ultra-wideband life detection radar. The module 12 transmits the real-time voice, video and environmental parameter data in the coal mine to the ground control center. The LCD screen 2 of the underground device can also view the parameters of various indicators in the underground environment in real time. The call button 3 is pressed to request voice communication on the ground (the video is a one-way video, only the ground can watch the underground situation); the camera 4 continuously transmits the video information to the ground command and control center through the optical fiber when the device is powered on; the microphone 5 is The voice input device in the roadway when the underground request voice communication or the command center requests voice communication; the earphone jack 6 is a reserved interface, in the case of very noisy conditions, you can use headphones with good sound insulation to improve the quality of voice communication; through the main control FPGA Chip and power amplifier circuit can realize high-power audio output. Data is transmitted through the optical fiber 15 or the NB-IoT module 13 . The utility model has complete functions, is portable, and has strong flexibility, realizes real-time perception of coal mine roadway environmental information, and discovers problems in time. At the same time, it can communicate with the ground control center in real time and transmit the roadway video information to the ground control center terminal through optical fiber.

As shown in Figure 6, using the device to build a system, it can be divided into three parts: ground control center, monitoring device and optical fiber transmission network. The ground control center includes servers and microphones, and the optical fiber transmission network includes communication gateways and relay routes. The system monitors the dust, temperature and humidity, gas concentration in the roadway and transmits the voice and video data of the roadway in real time, and uploads these data to the communication network, and finally transmits it to the server of the ground control center. Voice and video communication services determine the distribution and location of devices by IP addresses. The ground control center can trigger the emergency alarm function and broadcast messages to a single or all devices by entering a single IP or all IPs.

Considering that the underground tunnel is longer, more devices of the present invention are needed, even if the optical fiber can be used for data transmission with a large bandwidth, in order to further improve the transmission speed and efficiency, the device of the present invention can pass the images collected by the camera 4 through. The FPGA main control chip 19 performs compression processing and then transmits.

The device is installed in a coal mine. After power-on, the LCD screen 2 displays the data detected by the current sensors. If the temperature and humidity sensor 9 detects that the temperature change exceeds the set value of the device, the LCD screen 2 displays abnormal temperature and sends out an audible and visual alarm. At the same time, the data information is transmitted to the background server, and the ground command center receives the alarm information at the same time, which is convenient for operators and commanders to deal with it in time. In the same way, the dust concentration sensor 11 and the gas concentration sensor 10 will also display the dust concentration or abnormal gas concentration on the LCD screen 2 when the change exceeds the set value of the device, and issue an audible and visual alarm, and transmit the data to the server and the ground command center also receives it. to the corresponding alarm information. At the same time, the alarm signal of the dust concentration sensor 11 can be output to the dust suppression device of water spray as a switch signal, and the alarm signal of the gas concentration sensor 10 can be output to the ventilation equipment as a switch signal. The ultra-wideband life detection radar module 12 uses ultra-wideband radar combined with the life extraction algorithm to detect the signs of life of the mine personnel from the inside after the mine collapses and other accidents. , when an accident occurs, use the NB-IoT module 13 to communicate with the ground wirelessly, and transmit the detected situation to the ground in time.

The technical solutions of the present invention described above are not limiting conditions; although some are described in detail, the device can still modify the technical solutions or modify and replace some parts; and these replacements cannot theoretically depart from the essence of the present invention. and technical solutions.

Claims (3)

1. A multi-information sensing device for underground coal mine environment based on Internet of Things, it is characterized in that: this device comprises box body, FPGA, audio and video communication module, environment monitoring module, life detection module, LCD screen, earphone socket, request call button , sound and light alarm, energy storage power supply, optical fiber interface, optical fiber and power cord; The audio and video communication module includes a camera, a microphone, a speaker, and an audio power amplifier module; the speaker is powered by a power line, and is connected to the FPGA through a data line; the audio power amplifier module is electrically connected to the speaker for amplifying the volume of the speaker; The environmental monitoring module includes a temperature and humidity sensor, a gas concentration sensor, and a dust concentration sensor; the life detection module includes an ultra-wideband life detection radar module and an NB-loT module; The FPGA is respectively connected with a camera, a microphone, an LCD screen, a headphone jack, a temperature and humidity sensor, a gas concentration sensor, a call request button, a speaker, an NB-loT module, a sound and light alarm, an ultra-wideband life detection radar module, and a dust concentration sensor. ; The FPGA is connected with the optical fiber and the power line through a photoelectric conversion circuit and a voltage stabilizing circuit respectively, and the power line supplies power to the device through the step-down and voltage stabilizing circuit; the energy storage power supply is used to provide backup for the device when the power is cut off. power supply; The FPGA is used to receive and process audio and video signals obtained by cameras and microphones, and transmit them to the command center through optical fibers; at the same time, it is used to receive and process data detected by temperature and humidity sensors, gas concentration sensors, and dust concentration sensors, and convert the corresponding data. It is converted into an electrical signal and sent to the LCD screen for display; it is also used to control the sound and light alarm for alarming, and to send the voice signal transmitted by the command center through the optical fiber to the speaker for playback; Among them, the camera, microphone, LCD screen, headphone jack, temperature and humidity sensor, gas concentration sensor, and call button are all placed in front of the box; the speakers are placed on both sides of the box, and the NB-loT module is installed on one side of the box; The sound and light alarm and the ultra-wideband life detection radar module are placed above the box; the dust concentration sensor is placed under the box; the optical fiber interface, optical fiber and power cord are placed behind the box; FPGA, energy storage power supply and audio power amplifier module are placed inside the box. 2 . The multi-information sensing device for underground coal mine environment based on the Internet of Things according to claim 1 , wherein the device further comprises a power detection circuit, and the power detection circuit is electrically connected to the energy storage power supply and the FPGA respectively. 3 . , used to obtain the real-time power of the energy storage power supply and display it through the LCD. 3. A multi-information sensing device for underground coal mine environment based on the Internet of Things according to claim 1 or 2, characterized in that: the FPGA is connected to a spray device or an exhaust device through a data interface, and is used for removing the dust concentration exceeding the standard The signal or abnormal gas concentration signal is sent to the spray device or the exhaust device as the start signal of the device.

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