CN205647595U - Emergency communication of mine calamity and monitored control system - Google Patents

Abstract

The utility model discloses a mine disaster emergency communication and monitoring system. The system includes wireless node equipment, monitoring equipment, underground wireless terminal equipment and other equipment; wireless node equipment is generally in a power-saving state; when a disaster occurs underground in a mine, the wireless node equipment forms an emergency wireless communication network to provide communication for underground wireless terminal equipment Serve. This system can avoid the interruption of the communication between the well and the underground due to the damage of the communication and power supply cables when the disaster occurs, and ensure that after the underground disaster occurs, it can provide reliable communication and positioning services for the trapped people and rescuers in the mine. Monitor underground conditions.

Description

Mine Disaster Emergency Communication and Monitoring System

technical field

The utility model relates to a mine disaster emergency communication and monitoring system, which relates to the fields of sensor technology, wireless communication technology and the like.

Background technique

Coal is the main energy in my country, accounting for about 70% of the primary energy. The coal industry is a high-risk industry, and accidents such as gas, flood, fire, roof, and coal dust have plagued coal mine safety production. The underground communication system is one of the "six major safety and risk avoidance systems" in coal mines, and it is an important guarantee for the safe production of coal mines. The existing underground communication system mainly includes a wired dispatching system, a mobile communication system, a broadcasting system, a disaster relief system, and a ground-penetrating communication system. When accidents such as gas outburst, gas explosion, rock burst, roof fall, flood, and fire occur underground, it will cause damage to various communication equipment, communication cables, power supply cables, and underground monitoring equipment in the underground roadway. Therefore, wired dispatching system, mobile communication system, and broadcasting system are vulnerable to disasters and accidents and cannot be used. Disaster relief communication system The wireless communication system carried by post-disaster rescue personnel can realize communication within a certain range after the disaster, but it is still unable to communicate in areas that rescue personnel cannot reach. The ground-penetrating communication system is a communication system based on low-frequency ground-penetrating communication technology. The impact of accidents is small and the disaster resistance is strong. However, the transmitting equipment and transmitting antenna of the ground-penetrating communication are large in size and high in cost. Therefore, the ground-penetrating communication generally adopts the one-way broadcast communication method. Downhole personnel can only receive information from the well, but cannot send information. Only a limited number of underground chambers can be equipped with transmitting equipment. After an accident, the wellside still cannot know the situation of the underground personnel and the situation on the spot that are not in the chamber, so the communication through the ground The system also cannot meet the emergency communication needs of the mine. In order to ensure the life safety of underground personnel and solve the above problems, a new emergency wireless communication and monitoring system is needed, which can avoid the interruption of communication between the upper well and the underground due to the damage of communication and power supply cables when a disaster occurs, and ensure that after the underground disaster occurs , can provide reliable communication and positioning services for trapped people and rescuers in the mine, and can monitor the site situation in the mine at the same time.

Utility model content

The purpose of the utility model is to provide a mine disaster emergency communication and monitoring system. The system mainly includes wireless node equipment, monitoring equipment, voice equipment, monitoring equipment, display equipment and underground wireless terminal equipment; wireless node equipment, monitoring equipment, voice equipment, monitoring equipment, and display equipment have built-in batteries; when emergency communication is required, wireless Node equipment adopts wireless multi-hop communication to form an emergency wireless communication network. Monitoring equipment, voice equipment, monitoring equipment, display equipment and underground wireless terminal equipment are connected to the emergency wireless communication network through wireless node equipment to realize communication; emergency communication can be realized by monitoring equipment, voice Devices, monitoring devices, and display devices can also be initiated by downhole wireless terminal devices and uphole communication devices; wireless node devices, monitoring devices, voice devices, monitoring devices, and display devices are in the power-saving working state by default. Each device can be activated by other adjacent devices. Monitoring equipment, voice equipment, monitoring equipment and display equipment can also be activated automatically at regular intervals; voice equipment can also be activated manually.

1. The system further includes: wireless node equipment, monitoring equipment, voice equipment, monitoring equipment, and the bottom of the display equipment are fixed close to the installation plane. The junction angle is an acute angle; the bottom material is made of a material with good thermal conductivity; the top material of the wireless node device is made of high-temperature-resistant heat-insulating material without wireless signal shielding; the wireless node device shell has a waterproof function.

2. The system further includes: wireless node equipment, monitoring equipment, voice equipment, monitoring equipment, and display equipment are installed on the side wall or top of the roadway and the shaft wall, and can also be installed on the side wall or top of the shaft wall of the roadway. Ancillary facilities that are permanently reserved during the period of use.

3. The system further includes: wireless node equipment, monitoring equipment, voice equipment, monitoring equipment, and display equipment. The built-in batteries can use primary batteries or accumulators.

4. The system further includes: the monitoring equipment includes a temperature sensor, a carbon monoxide sensor, a carbon dioxide sensor, a methane sensor, an oxygen sensor, an air pressure sensor, a humidity sensor, and a water immersion sensor.

5. The system further includes: the voice equipment includes a call button and a voice acquisition and voice amplification module, the call button is used for emergency calls, establishes a data transmission link with the on-hole equipment through the activated emergency wireless communication network, and passes the voice acquisition module The voice signal is collected, and the voice signal is played through the voice amplification module to realize two-way voice communication.

6. The system further includes: the monitoring equipment and the built-in timer of the monitoring equipment, when in the power-saving working state, can be automatically activated according to the set timing time, collect environmental data or video image data, and automatically pass through the activated emergency wireless The data collected by the communication network is uploaded.

7. The system further comprises: a display device for displaying the received graphics and text information; the display device has a query button for querying the received graphics or text.

8. The system further includes: underground wireless terminal equipment including mobile phones, positioning cards, miner's lamps with wireless communication functions, portable instruments with wireless communication functions and other equipment with wireless communication functions.

Description of drawings

Fig. 1 Implementation diagram of mine disaster emergency communication and monitoring system 1.

Fig. 2 Implementation diagram of mine disaster emergency communication and monitoring system 2.

Figure 3 is a schematic diagram of the installation and cross-sectional structure of equipment such as wireless nodes.

Fig. 4 is a schematic diagram of the principle composition of wireless node equipment.

Figure 5 is a schematic diagram of the principle composition of the monitoring equipment.

Figure 6 is a schematic diagram of the principle composition of the voice device.

Figure 7 is a schematic diagram of the principle composition of the monitoring equipment.

Figure 8 shows a schematic diagram of the principle composition of the device.

Fig. 9 is a system work flow chart of the underground wireless mobile terminal equipment initiating communication.

Figure 10 is the system work flow chart of uploading data from downhole equipment.

Fig. 11 is a system work flow diagram of the communication between the above-ground equipment calling the underground wireless mobile terminal equipment.

detailed description

The specific implementation mode 1 of the communication and monitoring system is shown in Figure 1, and the composition includes:

1. The monitoring terminal (101) communicates bidirectionally with the underground wireless mobile terminal equipment (106) through the wireless communication network.

2. The switch (102), responsible for the data exchange of all devices connected to the Ethernet, and also responsible for the establishment and management of the wireless communication network.

3. The wireless node device (103) is responsible for setting up a wireless communication network; it is in the power-saving working state by default, and can be activated by the wireless mobile terminal device (105) and other adjacent devices to enter the normal working state, and automatically returns to the saving state after the communication is completed. electrical working status.

4. (104) includes: downhole monitoring equipment, voice equipment, monitoring equipment or display equipment.

5. Wireless mobile terminal equipment (105), including mobile phones, positioning cards, miner's lamps with wireless communication functions, portable instruments with wireless communication functions and other devices with wireless communication functions, equipped with emergency call buttons for activating the communication area A wireless node device (103) in a power saving state within.

Figure 2 is a schematic diagram of the implementation of the communication and monitoring system in inclined shafts and adit.

Figure 3 is a schematic diagram of the installation and cross-sectional structure of wireless node equipment and other equipment, including:

1. Anchor rod (301), used for fixed installation of wireless node equipment, monitoring equipment, voice equipment, monitoring equipment, display equipment, deep into the inside of the roadway wall, so that the bottom of the equipment can be fixed close to the installation plane, which can effectively prevent the wireless node from being damaged when an accident occurs. The device falls off.

2. The bottom (302) of the equipment casing is used to carry and install various components of the wireless node equipment. It is made of materials with good thermal conductivity and has a waterproof function. It can transfer the internal heat of the equipment to the medium in contact with the bottom for conduction and heat dissipation.

3. The top of the device casing (303) is streamlined, and the top of the casing of the wireless node device is made of high-temperature-resistant heat-insulating material without wireless signal shielding effect, and has a waterproof function. The top material of the casing of the monitoring device and the display device is made of transparent material.

4. Main board fixing copper pillars (304), used to support and fix the main boards (303) of wireless node equipment, monitoring equipment, voice equipment, monitoring equipment or display equipment, 4 in total, fixed at the bottom of the equipment.

5. The battery (305) is installed at the bottom of the device housing.

6. The main board (306), including wireless node equipment, monitoring equipment, voice equipment, monitoring equipment or display equipment core components other than antennas and buttons, is installed above the battery with a certain distance from the battery.

7. The communication antenna (307), the FPC board type antenna is connected with the IPX interface on the main board by using a flexible special transfer wire.

Figure 4 is a schematic diagram of the hardware composition of the wireless node device, the main components include:

1. Processor (401), using Atheros AR7161 wireless network processor, operating frequency 600Mhz.

2. Storage unit (402); including fast flash memory and random access memory. The fast flash memory adopts 32M Flash; the random access memory adopts 128M SDRAM.

3. Wireless communication unit (403): including a wireless communication module and an antenna. The core chip of the wireless communication module adopts AtherosAR9220; the antenna adopts FPC board-type built-in antenna, which is connected to the IPX interface led by AR9220 on the main board through a flexible special transfer cable, and the maximum gain is not less than 3.5dBi.

4. The wireless node device closest to the roadway exit not only plays the role of wireless access of wireless mobile terminal equipment, but also has the function of connecting the emergency wireless communication network to the wired network on the well, so this wireless node device has a wired communication unit. The wired communication unit (404) includes a wired communication module and a communication interface. The core chip of the wired communication module adopts Atheros AR8035, which supports Gigabit Ethernet. The communication interface adopts the standard Ethernet communication interface.

5. Power supply unit (405): including the battery and the voltage conversion part. The battery is a primary battery or a storage battery. The storage battery should have anti-reverse connection function and an internal protection circuit. The voltage conversion is responsible for converting the battery output voltage to the voltage required by other unit components, using the MAX1724 power chip.

Figure 5 is a schematic diagram of the principle structure of the monitoring equipment. The monitoring equipment can be equipped with one or more sensors in Germany, including temperature sensors, carbon monoxide sensors, carbon dioxide sensors, methane sensors, oxygen sensors, air pressure sensors, humidity sensors, and water immersion sensors. All sensors are The module has a pin header interface, is connected to the acquisition board through the pin header socket, obtains power supply, and outputs the collected analog signal to the I/O interface of the processor supporting A/D conversion. Monitoring equipment includes:

1. Processor (501), using Samsung S3C2440 processor, S3C2440 is a microprocessor based on ARM920T core, with 3 UART interfaces, 2 SPI interfaces, 2 USB interfaces, 1 IIC-BUS interface, integrated 8 channels 10-bit CMOS A/D converter, due to the built-in A/D converter, can directly collect the sensor data of analog output; equipped with Linux system.

2. Storage unit (502); including 256M NAND Flash, a piece of 4M NOR Flash, 128M SDRAM, and a piece of EEPROM with IIC-BUS interface.

3. The wireless communication module (503) adopts a wireless network card device, has an IPX antenna interface, adopts an FPC board-type built-in antenna, and connects to the IPX interface through a flexible special transfer cable, and the maximum gain is not less than 3.5dBi; provided by Linux and device drivers support.

4. Power supply unit (504): including battery and voltage conversion part. The battery uses primary battery or lithium ion storage battery. Anti-over-discharge, over-current, short-circuit and other functions, as well as balanced charging and balanced discharging functions. The voltage conversion is responsible for converting the output voltage of the lithium battery to the voltage required by other unit components, using the MAX1724 power chip. When using a battery, the battery charge and discharge management part is required, and the battery charge and discharge management core chip adopts the CS0301 lithium battery charge management chip. The processor controls the sensor power supply, and does not supply power to the sensor in power saving mode.

5. The carbon monoxide sensor (505) adopts the ME2-C0 carbon monoxide sensor module with a measuring range of 0 to 1000ppm.

6. The carbon dioxide sensor (506) adopts the MG811 carbon dioxide gas sensor module, and the measuring range ranges from 0 to 10000ppm.

7. The oxygen sensor (507) adopts the ME3-O2 oxygen sensor module, and the measuring range ranges from 0 to 30%.

8. The methane sensor (508) adopts the MQ-4 methane sensor module with a measuring range of 300 to 10000ppm.

9. The temperature sensor (509) adopts the DS18B20 temperature sensor module, and the measuring range ranges from -55 degrees Celsius to +125 degrees Celsius.

10. Humidity sensor (510), using AM2301 sensor module, using IIC-BUS interface, can directly collect digital data without A/D conversion.

11. Water immersion sensor (511), used to detect water immersion in the roadway, adopts multi-channel input water immersion sensor, and installs a set of probes corresponding to each road; the probe is installed on the roadway wall, and the number of probes is not less than 2 groups, that is, the water immersion sensor Not less than 2 inputs; the probes are installed in order from low to high, the distance between each group of probes is not less than 5 cm, the distance between the lowest group of probes and the bottom of the roadway is not more than 5 cm, the probes are connected in series with resistance, and the probes sense the loop with water and without water The change of the resistance value is converted into a voltage change signal that can be collected by the processor (501).

Fig. 6 is a schematic diagram of the principle structure of a voice device, which mainly includes: a processor (601), a storage unit (602), a wireless communication module (603), a power supply unit (604), a microphone (605), a loudspeaker (606) and buttons (607) ). Among them, the processor (601), storage unit (602), wireless communication module (603), and power supply unit (604) are exactly the same as the monitoring equipment solution, mainly adopting the S3C2440 platform solution. The microphone (605) is connected to the Mic interface drawn from the processor (601) for collecting voice signals. The loudspeaker (606) is connected to the Phone interface drawn from the processor (601), and is used for amplifying and outputting voice signals. Use a key (607) as a call button for emergency calls.

Fig. 7 is a schematic diagram of the principle structure of the monitoring device, which mainly includes: a processor (701), a storage unit (702), a wireless communication module (703), a power supply unit (704), and a digital camera (705). The basic design scheme of the processor, storage unit, wireless communication module, and power supply unit of the monitoring equipment is the same as that of the monitoring equipment and voice equipment, and the S3C2440 platform scheme is mainly adopted. The digital video camera (705) adopts a USB port digital video camera with a digital video compression function, and is supported by Linux and a device driver.

Fig. 8 is a schematic diagram of the principle structure of the display device, which mainly includes: a processor (801), a storage unit (802), a wireless communication module (803), a power supply unit (804), a display screen (805), and buttons (806). The basic design scheme of the processor, storage unit, wireless communication module, and power supply unit of the display device is the same as that of the monitoring equipment and voice equipment, and the S3C2440 platform scheme is mainly adopted. The display screen (805) adopts a 4.3-inch LCD display screen, which is driven by images, text and graphics by Linux. Use two keys (806) as query buttons for querying received graphics and text.

During emergency communication, if the underground wireless mobile terminal device initiates communication, the workflow of the system is shown in Figure 9:

1. (901) Press the emergency call button and call number of the wireless mobile terminal device, and the wireless mobile terminal device sends a network link establishment request.

2. (902) The nearest wireless node device receives the network link establishment request of the wireless mobile terminal device, and if the wireless node device is in the power saving state, it changes from the power saving state to the normal working state.

3. (903) The wireless node device queries the route of the called device.

4. (904) The wireless node device judges the direction of the network link according to the route. If the called device is accessed by the wireless node device, execute (1207); if the routing level of the called device is low, execute (1205); Execute (1206) if the routing level of the called device is higher.

5. (905) Waking up the wireless node devices in the power-saving state in the uplink direction in sequence until the wireless node devices in the called area, if the called device is an underground device, wake up all the wireless node devices in the uplink direction.

6. (906) Waking up the wireless node devices in the power saving state in the downlink direction sequentially, until the wireless node devices in the area where the called device is located.

7. (907) After all the devices required for the network link are woken up, the network link between the calling device and the called device is established.

8. (908) The calling device and the called device communicate over the network link.

9. (909) Either the calling device or the called device actively ends the communication, or the network link has no data communication beyond the set time, then the network link is disconnected.

10. (910) After disconnecting the network link and delaying the set time, the wireless node device on the network link that was in the power saving state turns into the power saving state again.

If the call button of the voice device is pressed, or the time for the monitoring device or the monitoring device to upload data regularly arrives, uplink communication is initiated, and the workflow of the system is shown in Figure 10:

1. (1001) Request to establish a link with the monitoring terminal.

2. (1002) The nearest wireless node device receives the network link establishment request, and if the wireless node device is in the power saving state, it changes from the power saving state to the normal working state.

3. (1003) sequentially waking up the wireless node devices in the power saving state in the uplink direction.

4. (1004) Establish a network link between the calling device and the monitoring terminal.

5. (1005) The calling device and the monitoring terminal communicate through the network link.

6. (1006) The calling device actively ends the communication and disconnects the network link.

7. (1007) After disconnecting the network link and delaying the set time, the wireless node device on the network link that was in the power saving state turns into the power saving state again.

During emergency communication, if the above-ground equipment initiates communication with the underground wireless mobile terminal equipment, the workflow of the system is shown in Figure 11:

8. (1101) The aboveground equipment calls the underground wireless mobile terminal equipment.

9. (1102) The wireless node device connected to the wired network receives the network link establishment request of the well equipment.

10. (1103) The wireless node device queries the route of the called device.

11. (1104) Waking up the wireless node devices in the power-saving state in the downlink direction sequentially until the wireless node devices in the area where the called device is located.

12. (1105) After all the devices required for the network link are woken up, establish the network link between the calling device and the called device.

13. (1106) The calling device and the called device communicate over the network link.

14. (1107) Either the calling device or the called device actively ends the communication, or the network link has no data communication beyond the set time, then disconnect the network link.

15. (1108) After disconnecting the network link and delaying the set time, the wireless node device on the network link that was in the power-saving state turns into the power-saving state again.

Claims (9)

1. A mine disaster emergency communication and monitoring system is characterized in that: the system mainly includes wireless node equipment, monitoring equipment, voice equipment, monitoring equipment, display equipment and underground wireless terminal equipment; wireless node equipment, monitoring equipment, voice Equipment, monitoring equipment, and display equipment have built-in batteries; when emergency communication is required, the wireless node equipment uses wireless multi-hop communication to form an emergency wireless communication network, and monitoring equipment, voice equipment, monitoring equipment, display equipment, and underground wireless terminal equipment pass through the wireless node equipment. Access to the emergency wireless communication network to realize communication; emergency communication can be initiated by monitoring equipment, voice equipment, monitoring equipment, display equipment, or by underground wireless terminal equipment and communication equipment on the well; wireless node equipment, monitoring equipment, voice equipment, monitoring equipment , The display device is in the power-saving working state by default. Each device in the power-saving working state can be activated by other adjacent devices. The monitoring device, voice device, monitoring device and display device can also be automatically activated at regular intervals; the voice device can also be activated manually. activation. 2. The emergency communication and monitoring system according to claim 1, characterized in that: the bottom of the wireless node equipment, monitoring equipment, voice equipment, monitoring equipment, and display equipment is fixed against the installation plane, and the section of the shell should have the following characteristics. Streamlined, with no acute or right angles at the top, and an acute angle at the junction of the bottom and the top; the bottom material is made of materials with good thermal conductivity; the top material of the wireless node device is made of high-temperature heat-resistant insulation material without wireless signal shielding; the wireless node device shell has water-proof. 3. The emergency communication and monitoring system according to claim 1, characterized in that: wireless node equipment, monitoring equipment, voice equipment, monitoring equipment, and display equipment are installed on the side wall or top of the roadway and the shaft wall, and can also be installed on the roadway The side wall or top shaft wall is solid and permanently retained on the auxiliary facilities during the service life of the roadway. 4. The emergency communication and monitoring system according to claim 1, characterized in that: the built-in batteries of wireless node equipment, monitoring equipment, voice equipment, monitoring equipment, and display equipment can use primary batteries or storage batteries. 5. The emergency communication and monitoring system according to claim 1, wherein the monitoring equipment includes temperature sensors, carbon monoxide sensors, carbon dioxide sensors, methane sensors, oxygen sensors, air pressure sensors, humidity sensors, and water immersion sensors. 6. The emergency communication and monitoring system as claimed in claim 1, characterized in that: the voice equipment includes a call button and a voice acquisition and voice amplification module, the call button is used for emergency calls, and the activated emergency wireless communication network and the above-ground equipment Establish a data transmission link, collect voice signals through the voice acquisition module, and play voice signals through the voice amplification module to realize two-way voice communication. 7. The emergency communication and monitoring system according to claim 1, characterized in that: the monitoring equipment and the monitoring equipment have built-in timers, which can be automatically activated according to the set timing when they are in the power-saving working state to collect environmental data or Video image data, and automatically upload the data collected through the activated emergency wireless communication network. 8. The emergency communication and monitoring system according to claim 1, characterized in that: the display device is used to display the received graphics and text information; the display device has a query button, and the query button is used to query the received graphics or text. 9. The emergency communication and monitoring system according to claim 1, characterized in that: underground wireless terminal equipment includes mobile phones, positioning cards, miner's lamps with wireless communication functions, portable instruments with wireless communication functions and other devices with wireless communication functions equipment.