CN102183930A - Personnel location monitoring system and location method under chemical scene - Google Patents
Personnel location monitoring system and location method under chemical scene Download PDFInfo
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Abstract
The invention relates to a personnel location monitoring system and a location method under a chemical scene. In the existing location equipment, the cost is high, and the location accuracy is low. The invention comprises an RS-485 bus, a wireless sensor network, a data conversion device and substation gateways distributed at workshops, wherein data in the RS-485 bus network is subject to communication according to an RS-485 bus communication protocol, data in the wireless sensor network is subject to communication through an RS-232 serial port according to a serial communication protocol, an RS-485 bus network and the wireless sensor network are connected through the data conversion device and the substation gateways of the workshops, and are used for transmitting instructions and parameters to the wireless sensor network. The invention can accurately obtain the locations of personnel in the workshops, and provides real-time dynamic location data.
Description
Technical field
The present invention relates to personnel positioning monitoring system under a kind of chemical industry scene, especially relate to a kind of use wireless sensor network technology and realize the personnel positioning monitoring function, another characteristics of this system are that the personnel positioning monitoring function is incorporated in the cover bus network, thereby realize personnel's monitoring and rescue under the chemical industry scene.
Background technology
In the fast development of mobile communication technology and popularizing down of infotech, derive the various application services of this type of technology.Wherein based on the application integration of positioning service (LBS) infotech, wireless technology, Internet technology etc. are in the fast development.The main concept of LBS (Location-Based Service) is to provide individual's positional information by integrating every information, and the user can judge the particular location of its site by receiving this positional information.
The chemical industry smelting equipment generally is placed in the work workshop, by relevant staff's work shift, the parameters of its work is monitored in real time, to improve the security performance in the whole smelting process.But some for example toxic gases that are difficult to expect leak, the life security that accidents such as zonal combustion blast are usually threatening the field personnel.Except setting about from the characteristics of chemical plant, chemical reflection itself, reduce from root outside the probability of happening of these accidents, the promptly foundation of the mechanism of efficiently rescuing can be made a response rapidly after accident takes place.According to investigations, the comparatively ripe personnel location system of utilization at present be its bearing accuracy of GPS about 10 meters, only be applicable to outdoor scene, this fact has proposed more urgent requirement to the indoor occupant The Location.
Personnel's wireless location system under the chemical industry scene can help the rescue personnel accurately to judge the more specific location information of indicator of trapped personnel, device distribution figure in conjunction with factory building, workshop, can find out a rescue route recently fast, after avoiding our rescue personnel to enter the scene of the accident, waste the precious time because of seeking indicator of trapped personnel.General indoor positioning technology comprises RFID, Bluetooth, ZigBee and Wi-Fi AP etc. at present.The Bluetooth technology is applicable to positioning service among a small circle, and node energy consumption is bigger.ZigBee is a kind of technology that is used for the middle distance location based on wireless sensor network, and Wi-Fi AP then can provide large-scale positioning service.According to its different characteristics, its applicable elements is had nothing in common with each other.So far, also there be not single kind of technology can be fit to the types of applications scene.Use the indoor positioning under the Wi-Fi technology realization chemical industry scene, then need complicated software and hardware to support that the cost of various device is also than higher, bearing accuracy remains a very big problem.The RFID technology can be carried out the location of short distance point of fixity among a small circle, its principal feature is that equipment cost is lower, region limits is more serious, can only in the reader recognizable set, work, the RFID technology can only realize knowing near the monitoring reader in addition, can not solve the problem of the definite location of personnel, and this also present just chemical plant is used mainly, and a big problem that faces.More various indoor positioning technology are analyzed it and are being solved the problem that realizes personnel positioning under the chemical industry scene, use wireless sensor network technology proper.
Summary of the invention
The objective of the invention is to provide supervisory system based on personnel's safety in production under the chemical industry scene of wireless sensor network technology, portable mobile node wherein possesses function such as personnel's real-time positioning under the chemical industry scene, and the monitor staff can obtain field staff's positional information in real time by host computer monitoring software.The invention provides personnel positioning monitoring system and method under a kind of chemical industry scene.
For achieving the above object, a first aspect of the present invention provides the system of personnel's position monitor under a kind of chemical industry scene to comprise:
Data in the RS-485 bus network are carried out communication according to RS-485 bus communication agreement;
Data in the wireless sensor network are carried out communication according to serial communication protocol by the RS-232 serial ports;
The RS-485 bus network is connected with each workshop substation gateway by DTU (Data Transfer unit) with wireless senser, is used for instruction and parameter are transferred to wireless sensor network.
Described DTU (Data Transfer unit) comprises:
The RS-232/RS-485 converter is used for standard RS-232 serial data is converted to the RS-485 serial data;
The RS-485 hub, the substation gateway that is used for being installed in different workshops is connected to the RS-485 bus;
Balance resistance, the characteristic impedance that is used to mate the RS-485 transmission cable can be selected to install according to the carry number of devices.
The hardware of described RS-485 bus network comprises: supervisory control comuter, chemical workshop substation, RS-485 bus and opertaing device are formed, wherein:
Supervisory control comuter is used for scheduling, the data acquisition of sensor node and field staff's locating and displaying to the bus data transmission;
Chemical workshop substation, RS-485 bus are connected with DTU (Data Transfer unit) by cable respectively, and DTU (Data Transfer unit) is connected with supervisory control comuter, are used for monitoring client data acquisition and order transmission, in the wireless network sampled point address information of monitoring client storage acquisition;
Opertaing device, opertaing device directly is connected on the RS-485 bus by cable, constitutes the terminal controlled device of RS-485 bus network.
Described wireless sensor network is made up of wireless gateway node module, reference mode and mobile node, radio network gateway comprises wireless communication module and base module, the reference mode module comprises wireless communication module, the mobile node module comprises engine of positioning on wireless communication module and the sheet, wherein the reference mode module is identical with the mobile node modular structure, comprises engine of positioning unit on the sheet on the mobile node; The gateway node base module comprises the serial communication interface unit, directly is connected on DTU (Data Transfer unit) and the RS-485 bus by cable;
The gateway node module is in range of receiving, by Radio Link and reference mode module, mobile node module swap data and information; Mobile node module in reference mode module and the range of receiving is carried out wireless telecommunications and exchanges data;
The reference mode module is used for the ionization meter collection that the mobile node module is transmitted;
The mobile node module, be used for comprising the wireless signal of self unique ID feature to the emission of regional internal reference node module, and gather signal strength measurement that each reference mode module returns and set the positioning function parameter that sends via the wireless gateway node module by the supervisory control comuter end, start on the sheet behind the engine of positioning, calculate the self-position coordinate, upwards be passed to the RS-485 bus via the gateway node module;
Supervisory control comuter is gathered the locator data that the mobile node module uploads in real time and is shown more specific location information, after being used to chemical accident takes place, understands the accurate distribution at the scene of indicator of trapped personnel, so that in time set the rescue scheme.
Described gateway node module, reference mode module installation site are to set according to the chemical workshop geographic position, can be with reference to four positions such as corner selecting ceiling.
Storing the position at gateway node module in each workshop, reference mode module place and each mobile node module binding people's information in the described supervisory control comuter, according to these information, the monitoring software that moves on the supervisory control comuter, the locator data that real-time collection mobile node module is uploaded also shows more specific location information, after being used to chemical accident takes place, understand the accurate distribution at the scene of indicator of trapped personnel, so that in time set the rescue scheme.
The communication of described gateway node module is connected on the DTU (Data Transfer unit) by the RS-232 serial ports, by RS-232/RS485 serial converter and RS-485 hub RS-232 interface is converted to the RS-485 interface, is connected on the RS-485 bus.By identical serial converter the RS-485 interface is transformed into RS-232 interface at last, realizes communication with supervisory control comuter.
For achieving the above object, a second aspect of the present invention provides the positioning and monitoring method of personnel under a kind of chemical industry scene, and monitoring step is as follows:
Step 1. supervisory control comuter end system starts, after supervisory control comuter sends data request command and positional parameter, and the monitoring software unit, the gateway node unit, the reference mode unit, the mobile node unit enters running status;
The wireless network in the zone is set up in step 2. gateway node unit, preserves positional parameter, and broadcasts the order of reference mode configuring request towards periphery, and enter accepting state;
After step 3. reference mode unit receives gateway node modules configured request command, self configuration information is replied to the gateway node unit, and enter accepting state.Prepare to receive the signal that the mobile node unit sends;
After the response message of reference mode is received in step 4. gateway node unit, the order of broadcasting mobile node configuring request, and enter accepting state;
After step 5. mobile node unit receives the configuring request order of gateway node unit, self configuration information is replied to the gateway node unit, and transmission self-ID information of the reference mode unit in range of receiving and signal strength measurement request, and enter accepting state;
After step 6. reference mode unit received the signal strength measurement request of mobile node unit, the enabling signal measuring unit was gathered and is measured signal, and measurement result is sent back to corresponding mobile node unit;
After step 7. mobile node unit receives the measurement result that each reference mode unit sends in the zone, to gateway node unit requests positional parameter;
Step 8. gateway node unit sends positional parameter to the mobile node unit, enters accepting state;
Engine of positioning on the step 9. mobile node unit starting sheet in conjunction with each signal strength measurement and positional parameter, calculates the position coordinate value of self, and result of calculation is packed together with self-ID information, sends to the gateway node unit every some cycles;
Step 10. gateway node unit sends the elements of a fix packet of receiving by standard RS-232 serial ports, via data conversion equipment and RS-485 bus, transfer to the remote monitoring computing machine;
After step 11. supervisory control comuter is received elements of a fix packet, it is decoded, and the original coordinates data and the mobile node related personnel information that obtain bound, be presented in real time on the area map of monitoring software, by this interface, can inquire about the position of personnel in each chemical workshop in real time, and real-time update.
Good effect of the present invention:
The design of DTU (Data Transfer unit) among the present invention has overcome the limited weakness of RS-232 communication distance in the traditional wiring, and has realized the monitoring function of point-to-multipoint, makes chemical workshop significantly reduce to wiring cost between the Control Room and wiring time.The configuration of reference mode can be operated under two kinds of patterns, and promptly awakening mode and mode of operation can shorten energy consumption greatly, increases battery serviceable life.Compare traditional RFID watch-dog, this invention more can provide accurate personnel positions information.
System of the present invention organically is combined in personnel positioning and real-time monitoring in the system, supervisory control comuter is responsible for the transmission of positional parameter and to the collection and the processing of mobile node locator data, forming each personnel's distribution situation of work workshop, whole chemical plant shows in real time, can accurately obtain the position of staff in the workshop, and the real-time dynamic positioning data are provided.Locator data is essential in the chemical industry safety in production, in case the chemical industry security incident takes place, by personnel positioning zone location data in the workshop, can find the indicator of trapped personnel present position rapidly, improve the efficient that the rescue team member formulates the rescue scheme, improved the probability of surviving of indicator of trapped personnel greatly.
Description of drawings
Fig. 1 is a supervisory system one-piece construction frame diagram of the present invention;
Fig. 2 is an embodiment of the invention supervisory system structural representation;
Fig. 3 is a work synoptic diagram in the embodiment of the invention supervisory system chemical workshop;
Fig. 4 is an embodiment of the invention monitor system software structured flowchart.
Embodiment
Below in conjunction with accompanying drawing the present invention is described in detail, be to be noted that described embodiment is intended to be convenient to the understanding of the present invention, and it is not played any qualification effect.
The present invention is a characteristic of utilizing low energy consuming wireless sensor netwoks, self-organization, has designed one and has been adapted at realizing the personnel positioning tracking under the chemical industry scene, and can realize the system of monitoring in real time.For the chemical industry safety in production provides real-time dynamic data in the workshop.Locator data is essential in the chemical industry safety in production, in case the chemical industry security incident takes place, by personnel positioning zone location data in the workshop, can find the indicator of trapped personnel present position rapidly, improve the efficient that the rescue team member formulates the rescue scheme, improved the probability of surviving of indicator of trapped personnel greatly.
System of the present invention adopts two kinds of technology of RS-485 bus network combining with wireless sensor network.According to being following system, Fig. 1 is a supervisory system one-piece construction block diagram of the present invention, as Fig. 2 is embodiment of the invention supervisory system structural representation, the present invention is further described, comprising: RS-485 bus network 1 and radio sensing network 2, serial ports conversion equipment 3 and substation gateway node 14.
Carry out communication according to standard RS-485 communications protocol during data in the RS-485 bus network 1, data in the wireless sensor network 2 are by the RS-232 data, association carries out communication according to serial communication, carry out exchanges data between the network of different communications protocol, need serial ports conversion equipment 3, in the present invention, DTU (Data Transfer unit) 3 is made up of two kinds of equipment: RS-232/485 serial converter 11 and RS-485 hub 16.RS-232/485 converter 11 can use any one product that standard RS-232 level signal can be converted to the RS-485 differential signal, and RS-485 hub 16 can adopt and meet any one RS-485 hub product national electrical standard, that can use under high-risk environment.Wireless module in the wireless sensor network 2 can use the wireless module that meets the ZigBee standard agreement.
RS-485 bus network 1 mainly comprises supervisory control comuter 10, RS-232/485 serial converter 11, RS-485 bus 15.
Be connected the rs-232 standard interface that mainly passes through on the substation gateway 14 between the bus network that RS-485 bus network 1 and serial ports conversion equipment 3 constitutes and the wireless sensor network 2, RS-485 bus network 1 by with RS-485 hub 16 with after RS-232/485 serial converter 11 is connected, transmission signals becomes standard difference RS-485 level signal, via RS-485 bus 12, be connected to RS-232/485 serial converter 13, again by the standard serial communication cable, be connected with rs-232 standard interface on the substation gateway 14.
Keep at a certain distance away between supervisory control comuter 10 and the chemical workshop, be connected to cable inlet place, workshop by RS-485 bus 15, RS-485 hub 16 is fixedly mounted on chemical workshop one end support, RS-485 bus 15 network arrangement are at place, passageway, chemical workshop factory building doorway, and each independent substation gateway 14 passes through RS-232/485 serial converter 13 carries on the RS-485 bus network.
Wireless sensor network 2 is made up of wireless gateway node 14, reference mode 17 and mobile node 18, wireless gateway node 14 comprises wireless communication module and base module, reference mode 17 comprises wireless communication module, and mobile node 18 comprises engine of positioning on wireless communication module and the sheet, wherein;
Reference mode 17 is identical with mobile node 18 structures, comprises engine of positioning unit on the sheet on the mobile node 18; Gateway node 14 bases comprise the serial communication interface unit, directly are connected on serial ports conversion equipment and the RS-485 bus by cable, and concrete is as follows:
The effect of gateway node module 14 is data such as the control command that sends of collection monitoring computing machine 10 and positional parameter, is broadcast to the interdependent node in the wireless communication range; The configuration information and the address information of each reference mode module 17 and mobile node module 18 in the pickup area, and transfer to the RS-485 bus network after the locating result information packing of collection mobile node module 18, therefore, need have a standard RS-232 interface.The effect of reference mode module 17 is the signals that receive mobile node module 18 in the wireless communication range, and the intensity of signal measured, and result of calculation sent it back mobile node module 18, gateway node module 14 and reference mode module 17 can adopt the wireless sensor node of any ZigBee of meeting consensus standard, its difference is the software difference of moving on the node module, and gateway node unit and reference mode unit all adopt C language compilation software.The gateway node unit a lot of the function served as bridge of communication between the heterogeneous networks, the signal strength values that the reference mode unit needs when then being responsible for measuring 18 location, mobile node unit.
As Fig. 3 is the synoptic diagram of working in the workshop, supervisory system of the present invention chemical plant, is labeled as among the figure:
Supervisory control comuter 10 is placed in the Control Room apart from the chemical industry workshop certain distance, with standard RS-232 interface, uses the RS-232 cable RS-232/485 serial converter 11 interior with being installed in Control Room to be connected on the supervisory control comuter 10.RS-485 hub 16 is installed in chemical workshop inner cable porch, and an end connects RS-485 bus 15, and the other end connects RS-485 bus 12.The substation gateway node 14 in each workshop uses the RS-232 cable to be connected to RS-232/485 serial converter 13, and the other end of converter is connected on the RS-485 bus 12 by the RS-485 cable.It is other that gateway node module 14 is installed in the workshop inlet, and reference mode module 17 can select to be installed in the corner of ceiling as shown.In the staff who carries mobile node module 18 enters the wireless wireless communication range in workshop, the ID sign indicating number of mobile node module will pass through Radio Link, gather and be sent to bus network by gateway node module 14, and be sent in real time in the supervisory control comuter 10.
Adopt a high-performance computer as supervisory control comuter 10, this computer CPU dominant frequency is P4-2.8G Hz, in save as 504M, hard disk 80G.On the mainboard of main control computer 10, the RS-232 interface that has a standard, stube cable on interface, the cable other end connects the passive RS232/485 serial converter of the safe UT-201 of space, RS-232, the RS-485 standard of the compatible EIA/TIA of switching device interface characteristic, electrical specification meets RS-232 end DB9 type connector, RS-485 end DB9 needle connector, and connect terminal.It is RS-485 bus 15 that the other end of breakout box connects standard RS-485 cable.The other end of cable is connected on the CHISHENG ECS8201 type hub, and this hub is supported 128 device nodes of carry, can work in 1.2 kilometer range, and the every tape of RS-485 signal has the 400W lightning protection, can tackle the ordinary accident in the chemical workshop.The other end of hub is drawn with standard RS-485 cable, is used for the carry watch-dog.Wireless gateway node 14 is as wireless network in each workshop and extraneous substation of getting in touch, be connected to the passive RS232/485 serial converter of the safe UT-201 of space with the rs-232 standard cable, the other end of converter uses the RS-485 cable to be connected on the RS-485 bus 12, promptly on the cable of being drawn by the RS-485 hub.Used 8 wireless reference mode modules 17 in this example, be arranged in two rooms, 5 staff have worn mobile node module 18.Gateway node unit 14, reference mode unit 17 and mobile node unit 18 wireless transmit receive frequencies are 2.4GHz, and wireless transmission distance is 50 meters.
Shown in Fig. 4 invention monitor system software structured flowchart, System Management Unit 21, interactive interface 22, data management 23, communication unit 24, substation gateway 25, reference mode unit 26, mobile node unit 27.The software that moves in these unit comprises the system management software, interactive interface software, data management software, wireless sensor network software.Software function and hardware configuration can design according to the concrete environment for use of system.
In the present embodiment, based on Windows XP operating system, the monitor system software that uses Visual C# to write has System Management Unit 21, and it mainly comprises: interactive interface 22, data management 23, communication unit 24.
Interactive interface 22 is the mutual main interfaces of monitor staff and monitor system software, comprising: parameter setting, order input, data presentation, guarded region are selected, wherein:
The parameter of parameter setting mainly comprises: serial communication baud rate, string slogan, position of rest, check bit etc.; RSSI absolute value in one meter in transmitter, signal intensity attenuation value behind one meter in transmitter;
Data management Unit 23 comprise: Data Receiving, data processing, personal information, location information management etc., wherein: this unit is the Design of System Software main body, be responsible for the analysis and the processing of personnel positioning data in the workshop, related personnel's information stores, the decompression of locator data bag, the real-time update of locator data.
The system that the present invention realizes is through operation after a while, and effect has reached the purpose of personnel positioning monitoring in the chemical industry scene goes to the workshop.The monitor system software workflow is as follows:
1. start-up system, the System Management Unit 21 on the supervisory control comuter 10 enters running status: interactive interface 22, data management Unit 23, wireless network, reference mode unit 26, mobile node unit 27 are set up in substation gateway Unit 25.
2. substation gateway 25 is broadcasted reference mode unit 26 configuring request;
3. after the 25 configuring request orders of substation gateway are received in reference mode unit 26, self coordinate and configuration information are replied to substation gateway 25, enter accepting state.
4. substation gateway 25 broadcasting mobile nodes 27 configuring request orders;
5. after mobile node unit 27 receives the request of substation gateway configuration, configuration information is replied to substation gateway 25.
6. after substation gateway 25 is received and is replied, broadcasting mobile node unit 27 request of data.
7. mobile node unit 27 each reference mode unit 26 unicast signal ionization meter requests in the zone, and to substation gateway 25 request positional parameters.
8. after each reference mode unit 26 receives the measurement request of mobile node unit 27, its signal is carried out ionization meter, and with the anti-corresponding mobile node unit 27 of delivering to of result.
9. substation gateway 25 is sent to mobile node unit 27 with positional parameter.
10. each reference mode unit 26 measured signal strengths value and positional parameters in mobile node unit 27 calmodulin binding domain CaMs start engine of positioning, and coordinates computed is sent to substation gateway 25 with the result by Radio Link.
11. after substation gateway 25 receives the coordinate data bag, be sent to supervisory control comuter 10 by the RS-232 serial ports.
12. after supervisory control comuter 10 is received packet, have the data processing section in the data management 23 that its packet is positioned the data recovery, and it shown by the data display unit at exchange interface 22.
13. the personal information of monitoring software data management 23 accesses corresponding personal information, is shown by data disaply moudle.
Claims (2)
1. personnel positioning monitoring system under the chemical industry scene is characterized in that, comprising:
Data in the RS-485 bus network are carried out communication according to RS-485 bus communication agreement;
Data in the wireless sensor network are carried out communication according to serial communication protocol by the RS-232 serial ports;
The RS-485 bus network is connected with each workshop substation gateway by DTU (Data Transfer unit) with wireless senser, is used for instruction and parameter are transferred to wireless sensor network;
Described DTU (Data Transfer unit) comprises:
The RS-232/RS-485 converter is used for standard RS-232 serial data is converted to the RS-485 serial data;
The RS-485 hub, the substation gateway that is used for being installed in different workshops is connected to the RS-485 bus;
Balance resistance, the characteristic impedance that is used to mate the RS-485 transmission cable can be selected to install according to the carry number of devices;
The hardware of described RS-485 bus network comprises: supervisory control comuter, chemical workshop substation, RS-485 bus and opertaing device are formed, wherein:
Supervisory control comuter is used for scheduling, the data acquisition of sensor node and field staff's locating and displaying to the bus data transmission;
Chemical workshop substation, RS-485 bus are connected with DTU (Data Transfer unit) by cable respectively, and DTU (Data Transfer unit) is connected with supervisory control comuter, are used for monitoring client data acquisition and order transmission, in the wireless network sampled point address information of monitoring client storage acquisition;
Opertaing device, opertaing device directly is connected on the RS-485 bus by cable, constitutes the terminal controlled device of RS-485 bus network;
Described wireless sensor network is made up of wireless gateway node module, reference mode and mobile node, radio network gateway comprises wireless communication module and base module, the reference mode module comprises wireless communication module, the mobile node module comprises engine of positioning on wireless communication module and the sheet, wherein the reference mode module is identical with the mobile node modular structure, comprises engine of positioning unit on the sheet on the mobile node; The gateway node base module comprises the serial communication interface unit, directly is connected on DTU (Data Transfer unit) and the RS-485 bus by cable;
The gateway node module is in range of receiving, by Radio Link and reference mode module, mobile node module swap data and information; Mobile node module in reference mode module and the range of receiving is carried out wireless telecommunications and exchanges data;
The reference mode module is used for the ionization meter collection that the mobile node module is transmitted;
The mobile node module, be used for comprising the wireless signal of self unique ID feature to the emission of regional internal reference node module, and gather signal strength measurement that each reference mode module returns and set the positioning function parameter that sends via the wireless gateway node module by the supervisory control comuter end, start on the sheet behind the engine of positioning, calculate the self-position coordinate, upwards be passed to the RS-485 bus via the gateway node module;
Supervisory control comuter is gathered the locator data that the mobile node module uploads in real time and is shown more specific location information, after being used to chemical accident takes place, understands the accurate distribution at the scene of indicator of trapped personnel, so that in time set the rescue scheme;
Described gateway node module, reference mode module installation site are to set according to the chemical workshop geographic position, can be with reference to four corner location selecting ceiling;
Storing the position at gateway node module in each workshop, reference mode module place and each mobile node module binding people's information in the described supervisory control comuter, according to these information, the monitoring software that moves on the supervisory control comuter, the locator data that real-time collection mobile node module is uploaded also shows more specific location information, after being used to chemical accident takes place, understand the accurate distribution at the scene of indicator of trapped personnel, so that in time set the rescue scheme;
The communication of described gateway node module is connected on the DTU (Data Transfer unit) by the RS-232 serial ports, by RS-232/RS485 serial converter and RS-485 hub RS-232 interface is converted to the RS-485 interface, be connected on the RS-485 bus, by identical serial converter the RS-485 interface is transformed into RS-232 interface at last, realizes communication with supervisory control comuter.
2. a method of utilizing the described positioning monitoring system of claim 1 to carry out personnel positioning is characterized in that this method comprises the steps:
Step 1. supervisory control comuter end system starts, and after supervisory control comuter sent data request command and positional parameter, monitoring software unit, gateway node unit, reference mode unit and mobile node unit entered running status;
The wireless network in the zone is set up in step 2. gateway node unit, preserves positional parameter, and broadcasts the order of reference mode configuring request towards periphery, and enter accepting state;
After step 3. reference mode unit receives gateway node modules configured request command, self configuration information is replied to the gateway node unit, and enter accepting state, prepare to receive the signal that the mobile node unit sends;
After the response message of reference mode is received in step 4. gateway node unit, the order of broadcasting mobile node configuring request, and enter accepting state;
After step 5. mobile node unit receives the configuring request order of gateway node unit, self configuration information is replied to the gateway node unit, and transmission self-ID information of the reference mode unit in range of receiving and signal strength measurement request, and enter accepting state;
After step 6. reference mode unit received the signal strength measurement request of mobile node unit, the enabling signal measuring unit was gathered and is measured signal, and measurement result is sent back to corresponding mobile node unit;
After step 7. mobile node unit receives the measurement result that each reference mode unit sends in the zone, to gateway node unit requests positional parameter;
Step 8. gateway node unit sends positional parameter to the mobile node unit, enters accepting state;
Engine of positioning on the step 9. mobile node unit starting sheet in conjunction with each signal strength measurement and positional parameter, calculates the position coordinate value of self, and result of calculation is packed together with self-ID information, sends to the gateway node unit every some cycles;
Step 10. gateway node unit sends the elements of a fix packet of receiving by standard RS-232 serial ports, via data conversion equipment and RS-485 bus, transfer to the remote monitoring computing machine;
After step 11. supervisory control comuter is received elements of a fix packet, it is decoded, and the original coordinates data and the mobile node related personnel information that obtain bound, be presented in real time on the area map of monitoring software, by this interface, can inquire about the position of personnel in each chemical workshop in real time, and real-time update.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110065468A CN102183930B (en) | 2011-03-18 | 2011-03-18 | Personnel location monitoring system and location method under chemical scene |
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| CN201110065468A CN102183930B (en) | 2011-03-18 | 2011-03-18 | Personnel location monitoring system and location method under chemical scene |
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| CN102393720A (en) * | 2011-11-11 | 2012-03-28 | 南京化工职业技术学院 | Factory level production safety monitoring system |
| CN102883427A (en) * | 2012-10-12 | 2013-01-16 | 浙江大学城市学院 | Method and system for realizing unvarnished transmission and positioning synchronization of serial ports on basis of ZigBee |
| CN104155927B (en) * | 2014-06-20 | 2017-02-15 | 中国人民解放军防化学院 | Method and device for collecting nuclear-biological-chemical rescue equipment support information |
| CN106546236A (en) * | 2016-10-18 | 2017-03-29 | 天津大学 | Based on architecture structure drawing from the offshore platform personnel positioning navigation system of host computer |
| CN106546241A (en) * | 2016-10-18 | 2017-03-29 | 天津大学 | The chemical plant personnel positioning navigation system calculated based on plant area's cartographic information and method |
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| CN102883427A (en) * | 2012-10-12 | 2013-01-16 | 浙江大学城市学院 | Method and system for realizing unvarnished transmission and positioning synchronization of serial ports on basis of ZigBee |
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| CN106546236A (en) * | 2016-10-18 | 2017-03-29 | 天津大学 | Based on architecture structure drawing from the offshore platform personnel positioning navigation system of host computer |
| CN106546241A (en) * | 2016-10-18 | 2017-03-29 | 天津大学 | The chemical plant personnel positioning navigation system calculated based on plant area's cartographic information and method |
| CN106546236B (en) * | 2016-10-18 | 2019-09-06 | 天津大学 | Based on architecture structure drawing from the offshore platform personnel positioning navigation system of host computer |
Also Published As
| Publication number | Publication date |
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| CN102183930B (en) | 2012-08-29 |
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