CN101765786A - System and method for tracking personnel and equipment - Google Patents
System and method for tracking personnel and equipment Download PDFInfo
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- CN101765786A CN101765786A CN200880100862A CN200880100862A CN101765786A CN 101765786 A CN101765786 A CN 101765786A CN 200880100862 A CN200880100862 A CN 200880100862A CN 200880100862 A CN200880100862 A CN 200880100862A CN 101765786 A CN101765786 A CN 101765786A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
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- G01S5/0018—Transmission from mobile station to base station
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
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- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
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Abstract
A system for tracking personnel and equipment in hazardous environments in pre or post-accident situations includes an intrinsically safe tracking tag and an intrinsically safe reader system. The intrinsically safe tracking tag transmits identification and status information to the intrinsically safe reader system, which includes a plurality of intrinsically safe antennas and a hub cable driver. In one embodiment, antennas are located at known positions in the hazardous environment and connected via a redundant, wired-mesh topology. The wired-mesh topology also allows more flexible antenna placement than line-of-sight wireless-mesh systems. The hub cable driver provides intrinsically safe power to and communication with the antennas using communication cables, receives data signals from the antennas, and transmits the data signals to a server. The server stores the data signals in a storage device and is connected to a workstation. The workstation retrieves the stored data to track persons or equipment.
Description
The cross reference of related application
The application requires in the right of priority of the 60/943rd, No. 807 U.S. Provisional Patent Application of submission on June 13rd, 2007.
Technical field
The present invention relates to tracking individuals and equipment in hazardous environment, in underground mine, Foundry Works, factory, large ship, refinery, heavy industry environment etc., wherein the tracker based on GPS (GPS) and other technologies is unworkable or inoperative.
Background technology
Be used for prior art systems and method, in this hazardous environment, lack " granularity " (being precision) of expectation aspect the position of definite personnel and equipment at hazardous environment tracking individuals with relatively poor radio signal propagation characteristic and equipment.
In addition, prior art systems may be used the tracking tags that is not for good and all to distribute to specific people or equipment, and this causes having problems on the actual person that identification is associated with the specific tracking label or accuracy aspect the equipment and degree of confidence.
Also have because hazardous environment may be " explosivity " environment, if thereby design imappropriate, the tracker element may be an incendiary source.
Some hazardous environment such as underground mine, can cover several miles zone and only at per 3000 to 5000 feet electric energy and communication interface be arranged, and typically takes the lead (belthead) corresponding to conveying.The existing tracker that depends on electric energy and communication interface is subject to the physics availability of these facilities, yet expectation such as in 1000 feet or still less, is learned the position of personnel and equipment with higher granularity.
Among another example, in the manufacturing industry environment, especially make aluminium manufacturer, may in basement or other closed buildings, dispose fire extinguishing system.Dispose fire extinguishing system and may cause such situation, wherein basement or other closed buildings do not have enough oxygen to maintain life.In this case, be desirably in and dispose before the fire extinguishing system, confirm that all personnel withdraw from this building.Owing to be closed building, so can not work reliably based on the system of GPS.
Among another example, the refinery with suspended pipe line and oil tank may cause the environment that can not receive gps signal reliably.
Among another example, large ship may comprise huge closed region belowdecks, and expectation is followed the tracks of personnel in this closed region, such as confirming all disembarks of all personnel, but can not receive gps signal reliably in this closed region.
Summary of the invention
According to a first aspect of the invention, a kind of system that is used for tracking individuals and equipment comprises: tracking tags and essential safety reader system.In hazardous environment, this system all is useful under two kinds of situations before accident and after the accident.Tracking tags is personnel or the equipment that is used for being attached to hazardous environment.Tracking tags is the radio signal that sends essential safety and regular, and radio signal comprises unique tracking tags identification code of recognition and tracking label.The essential safety reader system comprises: hub cable driver and a plurality of essential safety antenna or antenna equipment.The hub cable driver is connected by telecommunication cable with a plurality of essential safety antennas.The hub cable driver is configured to provide the essential safety electric energy via telecommunication cable to a plurality of essential safety antennas, and with described a plurality of essential safety antenna communications.A plurality of essential safety antennas are arranged in the known location of hazardous environment with the redundant infrastructure topology form that connects of wired grid of selfreparing.Wired network topology is compared sighting distance wireless mesh system, allows flexible antenna placement more.With each essential safety antenna configurations is via telecommunication cable, receives radio signals and data-signal is sent to the hub cable driver from described tracking tags.Data-signal comprises the antenna cognizance code of identification aerial and the tracking tags cognizance code of recognition and tracking label.Since essential safety tracking tags, a plurality of essential safety antenna with from the essential safety electric energy of hub cable driver and the essential safety attribute of communicating by letter, system can continue to operate in explosive atmosphere.In addition, although the redundant infrastructure topology that connects makes system when on the position that connects infrastructure topology along redundancy communication disruption being arranged, also can continue operation.
The essential safety tracking tags can be attached to the safety helmet that personnel wore in hazardous environment.In this case, tracking tags is called personnel's label.
The essential safety tracking tags also can be the device label that is attached to the equipment that is arranged in hazardous environment.The essential safety device label is used to receive the equipment state and the positional information of this equipment, and emission comprises the unique device label identification code of identification essential safety device label and the radio signal of equipment state and positional information termly.
Each essential safety antenna can have a plurality of communication port that are used to connect a plurality of other antennas, and these a plurality of communication port do not power up and disconnect the order that powers up and be connected in a plurality of communication interfaces selected communication interface up to receiving mutually.Further, each essential safety antenna can have first voltage domain, switching regulator and second voltage domain, wherein each essential safety antenna is in order to maximize essential safety, in first voltage domain, receive the electric energy of first voltage, and use electric energy that switching regulator is converted to the electric energy of first voltage second voltage to use at second voltage domain being used for.
In another was implemented, the hub cable driver had output port, IS protection piece and hub microcontroller.Output port is used to provide the essential safety electric energy and communicates by letter.IS protection piece is used to detect the electric current and the voltage levvl at output port place.The hub microprocessor is used for from IS protection piece received current and voltage levvl, and when needs when a plurality of essential safety antennas provide the essential safety electric energy and communicate by letter, from output port disconnection electric energy.
Another enforcement comprises known location that is arranged in hazardous environment and the essential safety air borne sensor that communicates with the hub cable driver.Configuration essential safety air borne sensor comes: detect airborne gas level on the essential safety air borne sensor; And regularly send signal to the hub cable driver, signal comprises the unique identifier of identification essential safety air borne sensor and the horizontal read value of gas of the detected gas level of indication.The essential safety air borne sensor can be wireless air borne sensor, maybe can communicate by telecommunication cable and hub cable driver.Under situation about connecting, further dispose the essential safety air borne sensor and come to receive electric energy from the hub cable driver via telecommunication cable by telecommunication cable.
According to a second aspect of the invention, a kind of being used for comprises in the system of hazardous environment tracking individuals and equipment: a plurality of tracking tags, essential safety reader system, server database and server.Each tracking tags is used for regularly sending the radio message that comprises unique tracking tags ID.Each tracking tags is used for being attached to the different personnel or the equipment of hazardous environment.Further, each tracking tags is an essential safety.The essential safety reader system comprises: hub cable driver and a plurality of essential safety antennas that are connected to the hub cable driver, and described a plurality of essential safety antenna adopts the redundant infrastructure topology that connects to interconnect by telecommunication cable, each antenna is arranged in the known location of hazardous environment, is used for sending to the hub cable driver from the label data message that near tracking tags receives radio message, determines the signal strength values of the radio message that each receives and will be used for each radio message that receives.Each label data message comprises: the antenna ID and the signal strength values of the radio message that receives, receiving antenna.This server comprises: server module, manager module and check module.Server module is used for receiving the position that label data message, the antenna of radio message by determining to receive the highest signal strength value are determined each tracking tags from the hub cable driver.Manager module is used for safeguarding the live label data table of described server data, and live label data table comprises the current location data that is used for each tracking tags.Check that module is used for the map at least a portion of hazardous environment, produce the demonstration of the current location of each tracking tags, and produce the selected demonstration of the data that are used for each tracking tags.
An enforcement according to a second aspect of the invention, system further comprises at least one air borne sensor of communicating by letter with the hub cable driver, and server further comprises the sensing data shared storage.
According to another enforcement, system further comprises monitor module, is used to provide the Email support to database report and state notifying.Monitor module can be further used for reading with pack processing and be contained in order from the email message that e-mail server receives.
According to another enforcement, system comprises key module, is used for generator and based on the antenna that allows and the quantity of tracking tags permission is controlled.
In another enforcement, system comprises the OPC module, is used to allow the OPC visit of external client to server.
After if known tracking tags is left the detected environs of essential safety reader system, in the detected environs of predetermined amount of time inward nature secure reader system, do not reappear, check that then module can further be provided with alarm and send the sound.
Other features and advantages of the present invention will be from hereinafter setting forth the specific descriptions of the preferred embodiment of the present invention or obviously.
Description of drawings
Fig. 1 is according to the present invention, is used for the functional block diagram of the example system of the personnel that follow the tracks of at hazardous environment and equipment.
Fig. 2-Fig. 5 is the schematic diagram of the example system configuration in typical Minepit environment.
Fig. 6 is the stereographic map that is attached to exemplary nature Security Officer's label of representative safety helmet.
Fig. 7 is the functional block diagram of exemplary hub cable driver of the example system of Fig. 1.
Fig. 8 is the functional block diagram of exemplary nature safety antenna of the example system of Fig. 1.
Fig. 9 is the functional block diagram of first and second voltage domains of the exemplary nature safety antenna of Fig. 8.
Figure 10 is the circuit diagram of exemplary enclosed switch voltage stabilizer of the exemplary nature safety antenna of Fig. 8.
Figure 11 is the circuit diagram of exemplary circuit switch importation of the exemplary nature safety antenna of Fig. 8.
Figure 12 is the front plan views of exemplary servers of the example system of Fig. 1.
Figure 13 is the representative screenshot that the map that is produced that is used for showing on the display workstation of the example system of Fig. 1 shows.
Figure 14 is the representative screenshot that is used for the data presentation that is produced that shows on the display workstation of the example system of Fig. 1.
Figure 15 is that the assembly that is produced that is used for showing on the display workstation of the example system of Fig. 1 monitors the representative screenshot that shows.
Figure 16 is the architectural overview figure of example software system of the example system of Fig. 1.
Figure 17 is the process flow diagram of exemplary servers module of the example software system of Figure 16.
Figure 18 is the process flow diagram of exemplary administration module of the example software system of Figure 16.
Figure 19 is the process flow diagram of exemplary monitor module of the example software system of Figure 16.
Figure 20 is the exemplary process flow diagram of checking module of the example software system of Figure 16.
Figure 21 is the process flow diagram of exemplary key module of the example software system of Figure 16.
Figure 22 is the process flow diagram of exemplary OPC module of the example software system of Figure 16.
Embodiment
According to the purpose of this paper, " essential safety (intrinsically safe) " should be according to the definition of Department of Labor, mining safety and health control office (MSHA).
In addition, according to the purpose of this paper, describe " hazardous environment " with reference to underground mine, yet be to be understood that, the system and method for describing is applicable to any hazardous environment, comprises underground mine and Foundry Works, manufacturing plant, large ship, refinery, heavy industry environment etc.
A. system
Fig. 1 illustrate be used for before accident and accident after under the situation, the example system 10 of tracking individuals and equipment in hazardous environment, comprise: essential safety personnel's label 20 is (although only illustrate a label, but a plurality of this labels can be arranged) in being to use, essential safety device label 22 is (same, although a label only is shown, a plurality of this labels can be arranged in being to use), first group of essential safety antenna 26a-26i, second group of essential safety antenna 28a-28i, hub cable driver 30, data exchange unit 34, server 36, data-carrier store 38 and workstation 40.Hub 30, first group of antenna 26a-26i and second group of antenna 28a-28i are linked together by telecommunication cable (preferably concentric cable) section.Example system 10 is electronic safety systems that specialized designs is used for hazardous environment 48, to be used for determining and the position of report personnel and equipment.Advantageously, example system 10 is based on industrial standard radio-frequency (RF) identification (RFID) technology of using in such as following a lot of commercial application: charge station's passage, marathon/race, and door safety system, certainly by claim, other radiotelegraphys also are within the spirit and scope of the present invention.
The essential safety reader system is by a plurality of regular antenna 26a-i, 28a-i at interval, that be interconnected by the telecommunication cable such as concentric cable redundantly, and hub cable driver 30 forms, and wherein hub cable driver 30 is presented electric energy and coupling two-way data to telecommunication cable.Each antenna 26a-i, 28a-i all are essential safety, and can be deployed in the gas zone.In example system 10, each antenna 26,28 has four ports that can use simultaneously, and hub cable driver 30 can be presented two aerial networks 26,28 simultaneously.Hub cable driver 30 is not safe, and preferably is installed in the fresh air with standard ethernet connection and local DC power supply.
The purpose of essential safety personnel's label 20 and essential safety device label 22 is to be used for regularly sending the digital radio message that comprises the ID code, and this digital radio message can be received by the networking antenna 26a-i, the 28a-i that are installed in the hazardous environment 48.Personnel's label 20 is intended to allow those be in that individual in the hazardous environment 48 wears always, comprises entering into the zone that label 20 need be allowed to.Device label 22 is intended to be placed on the equipment to be tracked.Each all is placed on essential safety personnel's label 20 and essential safety device label 22 in the firm plastic casing that seals because of environment reason.The circuit of enclosure is an essential safety.
Will explain in detail that as following example system 10 is because of the essential safety attribute of its essential safety personnel label 20, essential safety device label 22 and antenna 26a-26i, 28a-28i, so can be after accident continue operation in the hazardous environment 48 of situation.So, because all unit that are arranged in the system 10 of hazardous environment 48 all are essential safety, thus system 10 can continue in gas environment, to operate, and continue the accident in hazardous environment 48 or ventilate interrupt after, personnel and equipment monitor are provided.
Further, will explain that as following system 10 is fault-tolerant and autodiagnosis.The element of system 10 monitors himself, and system 10 reconfigures electric energy and the communication path that himself provides alternative.So, under failure situations, such as the position along antenna (for example 26a or 28a) communication disruption takes place, the then redundant foundation structure that connects makes unaffected antenna (for example 26b or 28b) can continue operation.In addition, when detecting problem, problem is notified to non-hazardous environment element (being hub cable driver 30, switch 34, server 36, storer 38 and workstation 40), and problem is notified to the operator.
Should be noted that in putting into practice situation in hazardous environment 48, to have a lot of personnel and be in equipment in the operation, and each all should be as separately unique personnel's label 20 or unique device label 22.So, for simplicity, use single personnel's label 20 and device label 22, should be appreciated that operational scenario will have a plurality of such equipment that uses simultaneously in hazardous environment, below describe being applicable to this generic operation situation.
And, in putting into practice situation, for the granular level that realizes expecting, in whole hazardous environment, can be provided with a plurality of antennas (for example, 26a-26i, 28a-28i).Advantageously, each antenna is connected to any other antenna via one section telecommunication cable in the design of the system 10 permission network.Each antenna can interconnect via telecommunication cable section and one or more other antennas.
Fig. 2-5 illustrates the example system configuration in the typical Minepit environment, as the example of potential danger environment, wherein expects personnel and equipment are monitored.
Fig. 2 illustrates the horizontal slice of mine, and it has antenna 26a-c, 28a-c be configured to be separated by 1000 feet system 50.Personnel's label 20 between antenna (for example 26a, 26b) will most possibly be obtained by two antennas (for example 26a, 26b), produce about 500 feet granularity and whole process is carried out in the position of personnel's label 20 to monitor.
Fig. 3 illustrates the horizontal slice of mine, and it has be configured to be separated by 2000 feet the system 52 with antenna 26a-c, 28a-c.
Spacing has limited the antenna 26a-c that can use, the quantity of 28a-c, because long cable will have higher impedance, so the reader of lesser amt can be arranged on aerial network 26,28.For example, under 1000 feet spacing, system 50 can use 28 antenna 26a-x, 28a-x (be calculated as 14000 feet and go into, 14000 feet go out, and per 1000 feet have antenna 26a-x, a 28a-x) altogether.Under 2000 feet spacing, system 52 can use 24 antenna 26a-x, 28a-x (be calculated as 24000 feet and go into, 24000 feet go out, per 2000 feet antenna 26a-x, 28a-x) altogether.
Tie line between antenna 26a-x, the 28a-x provides the redundancy between the aerial network 26,28.
Fig. 4 illustrates the horizontal slice of mine, and it has the system 54 that is configured to cover by placement antenna 26a-x, 28a-x in a plurality of passages four passages or inlet.Deliberately antenna 26a-x, the 28a-x that antenna 26a-x, 28a-x in the passage are placed to from different passages is not straight line path by halt, to be used for preventing that label 20,22 from being obtained by the 26a-x in the different passages, 28a-x.
Fig. 5 illustrates the horizontal slice of mine, and it has the system 56 that is configured to be covered by four hub cable drive 30a-d four passages or inlet.Antenna 26a-x, 28a-x are configured to redundant fashion.
B. essential safety personnel label and device label
Fig. 6 illustrates the representative essential safety personnel's label 20 that is attached to representative safety helmet 66, and this safety helmet 66 may be worn when mine is worked by the miner.Personnel's label 20 regularly sends the digital radio signals of the unique cognizance code that comprises identification personnel label 20.Example tag 20 is " activity " equipment, use battery increase transmitting boundary, with the interval of 1-2 second send, have the 200-800 foot scope, use the frequency of 433.92MHz, and use the high-tech sticker to be attached to safety helmet 66.
Similarly, essential safety device label 22 can be attached to the equipment in the mine.Exemplary apparatus label 22 has analog input and numeral input, is used for the receiving equipment status information, such as vehicle electric energy and temperature.Device label 22 regularly sends and comprises the unique cognizance code of identification equipment label 22 and the digital radio signals of status information of equipment.
As describing incorporating into by reference in this paper U.S. Patent application 12/017,888 as a reference, advantageously, essential safety personnel's label 20 and essential safety device label 22 use the transceiver that can receive and launch.
C. essential safety hub cable driver
Fig. 7 is the block diagram of exemplary hub cable driver 30, comprises the mainboard and the first Ethernet daughter board 70a or the second Ethernet daughter board 70b.As shown in Figure 7, from external power source 72 the 10-30V direct current is offered hub cable driver 30.+ 3.3V direct current and+the 36V direct current comes from external power source 72.+ 3.3V direct current is used for this machine system power supply, as shown in Figure 7 and the following stated, and offers aerial network 26,28 (Fig. 1) before at general+36V direct current, and+36V direct current is protected piece 74 by IS.
The Ethernet that any one of the first Ethernet daughter board 70a and the second Ethernet daughter board 70b all can be handled hub cable driver 30 is connected.The first Ethernet daughter board 70a has Ethernet switch and a plurality of RJ45 and fiber port.The second Ethernet daughter board 70b has single RJ45 port.The first Ethernet daughter board 70a and the second Ethernet daughter board 70b are by this locality+3.3V power supply power supply.
From the packet of the first Ethernet daughter board 70a or the second Ethernet daughter board 70b route before being delivered to RF modulation chip group 78, by hub microprocessor 76 make an explanation (interpretation).Data after the modulation are being coupled to cable plug 80a, 80b (preferably RGI 1 coaxial cable plug) before, by 74 pressure limitings of IS protection piece.
Similarly, the data that receive from aerial network 26,28 (Fig. 1) are according to opposite path, and through on ethernet network, flowing out from the first Ethernet daughter board 70a or the second Ethernet daughter board 70b.DB9 serial port 81 and storage card 82 (preferably SD storage card) are provided, are used for allowing directly to communicate with hub microprocessor 76.Hub microprocessor 76 receives the voltage and current level from IS protection piece 74, and opens switch (not shown) (for example, small-sized output relay (2A 30V DC)) and signal the system failure.In addition, if hub microprocessor 76 detects fault, then hub microprocessor 76 disconnects electric energy from two cable plug 80a, 80b, to provide essential safety to aerial network 26,28 (Fig. 1).
As shown in Figure 1, hub cable driver 30 is positioned at outside the hazardous environment 48.First cable is connected to first group of connection antenna 26a-26i with the port 31a of hub cable driver 30.Second cable is connected to second group of connection antenna 28a-28i with the port 31b of hub cable driver 30.Hub cable driver 30 is configured to: electric energy is offered antenna 26a-26i, 28a-28i via cable; Via cable from antenna 26a-26i, 28a-28i received signal; And signal is sent to server 36 via data switching exchane 34.Such as by Ethernet protocol communication, communicativeness is coupled to data switching exchane 34 with hub cable driver 30.
Advantageously, netted connection configuration between the hub cable drive 30 of example system 10 and antenna 26a-26i, the 28a-28i provides multi-level redundancy, and four independent paths are used to receive electric energy and are used to send the data to server 36 because each antenna 26a-26i, 28a-28i have nearly.For example, if cause the position between antenna 26a, 26b to produce communication disruption because of incident in hazardous environment (for example, mine), then all antenna 26a-26i, 28a-28i will still can operability be connected to hub cable drive 30.
D. essential safety antenna
As shown in Figure 1, first group of essential safety antenna 26a-26i and second group of essential safety antenna 28a-28i are arranged in the known location of hazardous environment 48, and interconnect or be connected respectively to the first port 31a or the second port 31b of hub 30 by telecommunication cable.Antenna 26a-26i and 28a-28i are configured to, when personnel's label 20 and device label 22 are in the scope of antenna 26a-26i, 28a-28i, from label 20,22 receiving digital radio signals.Each antenna 26a-26i, 28a-28i further are configured to, send the signal that comprises the unique identifier of discerning each antenna 26a-26i, 28a-28i via telecommunication cable, and the unique identifier that is used for personnel's label 20 and device label 22 that will receive is forwarded to hub cable driver 30 with any status information of equipment relaying separately.Each antenna 26a-26i, 28a-28i also have a plurality of ports that are connected with hub cable driver 30 or other antennas.
Fig. 8 illustrates the FBD (function block diagram) of exemplary antenna 26a, and it comprises that plate carries antenna (on-boardantenna) 84, antenna microcontroller 85, a plurality of radio frequency modulator 86a-86d and port 88a-88d.
Get back to Fig. 1, in hazardous environment 48, a plurality of antenna 26a-26i, 28a-28i are installed with the interval of rule, and each other redundant the connection.Should " mesh network " structure obtain electric energy from the single hub cable driver of free air (freeair), disposing 30.Hub cable driver 30 is also to being responsible for the ethernet network swap data.Each antenna 26a-26i, 28a-28i are essential safety, and before reaching the available electrical energy limit of hub cable driver 30, can expand installation.Each antenna 26a-26i, 28a-28i can be connected with a plurality of other antennas 26a-26i, 28a-28i via telecommunication cable independently.
After with aerial network 26,28 complete initialization, will begin to receive information from essential safety personnel label 20 and essential safety device label.Among example system 10, carry antenna 84 with plate and receive packet, and data are relayed to each port 88a-88d individually.Each port all has the radio frequency modulator 86a-86d of oneself.For energy-conservation, any untapped port 88a-88d can demote.By more than one antenna 26a-26i, 28a-28i from the situation of one or more label 20,22 received signals, antenna 26a-26i, 28a-28i determine the signal intensity that receives from each label 20,22, to derive antenna 26a-26i, the 28a-28i nearest apart from each label 20,22.
Fig. 9 illustrates the exemplary antenna 26a with first voltage domain 90 and second voltage domain 92, with the essential safety of maximization parts.
Get back to Fig. 8, line switching assembly 93a-93d and RF coupling condenser 94a-94d (Fig. 8) also can add this kind voltage.Enclosed switch voltage stabilizer 95 adopts this voltage, then it is limited to produce second voltage domain 92 (Fig. 9).
Second voltage domain 92 (Fig. 9) is this machine 3.3V direct current, to each radio frequency modulator 86a-86d and 85 power supplies of antenna microcontroller.The input of enclosed switch voltage stabilizer 95 is restricted to 62mA with fuse, and the voltage of output is restricted to 5.36V by redundant 5.1V Zener (not shown).In addition, each radio frequency modulator 86a-86d and antenna microprocessor 85 have the reliable 62mA fuse 96 of 10V of oneself.
In order to keep higher electric energy efficiency and grid (mesh) stable, so enclosed switch voltage stabilizer 95 accepts IS 41V direct current, and with its step-down for+3.3V direct current to be used for all communication of this machine and control operations.Enclosed switch voltage stabilizer 95 is sealed with secluding air, and it is welded on the plate, the user can not change it like this.The protective element target of parts is that pressure regulator required plate live container and inductor in its operation isolated.All protecting components are closed on the plate with enclosed switch voltage stabilizer 95, and are that 60V is reliable.
In order to eliminate the concurrent fault, RF adds fuse respectively, nestles up the output of pressure regulator 95.Fuse 96 is reliable, the maximum 62mA of 10V, and is that the user is non-exchange.
Figure 10 illustrates enclosed switch voltage stabilizer 95.The fuse F7 disposable, that the user is non-exchange is defined as 62mA (from IS 41V direct current, 500 milliamperes of hub sources) with maximum input current.For pressure regulator input capacitor (C142, C143 and C144) and input reverse feeding are separated, make electric current pass through redundant diode (D36, D33 and D34).U9 is the standard step-down controller, has internal switch pin and single output inductor L 17.Output capacitor is C136, C137 and C140.The normal output of 3.3V is set by the feedback of R83 and R84.Any overvoltage fault will be limited by redundant 5.1V Zener D28, D29 and D30, and effective maximal value of its setting is 5.36V.
See Figure 11 now, in first voltage domain 90 (i.e. 41 volts of territories), all barrier assemblies are that twice wrong redundancy or 60V are reliable.Four port 88a-88d functions are identical, and can any one accept IS 41V direct current, 500mA by it.The electric energy of each port 88a-88d output at first filters (L7, L1, L2, L10) through RF before at the line switching MOSFET (Q1, Q3, Q4, Q2) that arrives oneself.Simultaneously, any RF communication is by redundant capacitance (C67/C68/C69, C19/C20/C21, C36/C35/C34, C81/C80/C79) shunting.Voltage sense line is come current limliting by high value series resistance device R7.Similarly, the MOSFET operation circuit comes current limliting by high resistors in series (R5/R10, R6/R12, R8/R13, R9/R11).The inherent body diode of MOSFET intercepts the electric energy from the un-initialized port simultaneously for this machine 3.3V pressure regulator provides electric energy.
Get back to Fig. 8, every other assembly is in second voltage domain 92.Radio frequency modulator 86a-86b (preferably CCI 101RFID chip) is used for communicating with each port 86a-86b individually.Antenna microcontroller 85 is SAM 7S microcontroller preferably.Antenna microcontroller 85 is responsible for receiving initialization command from hub cable driver 30, and connects each port 88a-88d with one group of low current diode pumping (not shown).Antenna microprocessor 85 monitors the decline of service voltage, the block signal that this expression is bad.Temperature data is collected by the temperature sensor (not shown).User interface 97 is made up of button, LED and LCD display.Data transceiver 98 is collected data from label 20,22, and sends data to antenna microprocessor 85 and broadcast to the hub cable driver to passback being used for.
E. physics is described
Get back to Fig. 1, the circuit of exemplary hub cable driver 30 preferably is installed in the metal shell.Cover does not need explosion-proof or dustproof.Preferably, all plates are to apply the type coating.The circuit of exemplary antenna 26a-26i, 28a-28i is preferably mounted in the firm plastic jacket of sealing because of environment reason; Yet, cover is not made the dustproof requirement.Cover does not need explosion-proof or dustproof.The circuit of exemplary antenna 26a-26i, 28a-28i is an essential safety.Preferably, all plates are to apply the type coating.
F. grid network security
In order to keep intrinsic safety and make things convenient for quick check, when deployment example system 10, should be noted that following restriction:
1. a hub cable driver 30 can be only used in each aerial network 26,28 combination.
2. the length that is in each the telecommunication cable segmentation between hub cable driver 30 and antenna (for example 26a-26i, 28a-28i) or the antenna (for example 26a-26i, 28a-28i) (for example should be less than the determined predetermined length of telecommunication cable characteristic, for the RG11 concentric cable, length is 4000 feet).
3. can use predetermined quantity antenna (for example, 26a-26i, 28a-28i) by telecommunication cable characteristic determined every day of spider lines combination 26,28.For example, the ceiling restriction of 50 antennas the maximum quantity of the cable segmentation that can dispose.If first node is added four segmentations, and three segmentations of each additional node interpolation, then by using the preferred characteristics of RGI 1 concentric cable, maximum segments must be 1*4+49*3=151.The 151*4K foot produces the worse situation of 604K foot network.Consider that 16pF/ft cable standard has disclosed the worse situation that is distributed in 9.6uF in the whole network.Suppose the maximum 40V direct current of system, and use the grading resistance number of 75 ohm of interchanges and 18.4 ohm of direct currents, then maximum network does not show igniting danger as can be seen.
What should be noted that these criterions (maxim) is intended that the simplification security inspection, but has exceeded the useful limit of power of example system 10.Antenna load, signal intensity and cable resistance will be restricted to the available network size under these levels automatically.Thereby, be systemic-function to the simple inspection that continues security.Briefly, if antenna 26a-26i, 28a-28i power up and communicate by letter, then network state is good.
G. optional air borne sensor
Optionally, system 10 can comprise the essential safety air borne sensor, no matter be wired or wireless.The wireless air borne sensor of essential safety is positioned at the known location of underground mine, and uses above same radiotelegraphy periodic transmission digital radio signals with respect to personnel's label 20 and device label 22 descriptions.Digital radio signals comprises the unique identifier of discerning wireless air borne sensor and by the horizontal read value of the detected gas of wireless air borne sensor.
Advantageously, wireless air borne sensor exchanges by the wireless air borne sensor that allows to need the wireless air borne sensor of calibration and calibrated and simplifies calibration process.Then, can in comparing the mine environment of more controlled (with comfortable),, the wireless air borne sensor of needs calibration be calibrated with other wireless air borne sensors in the center.In addition, wireless air borne sensor comprises rechargeable battery, and it can be to wireless air borne sensor power supply between calibration.So can charge to rechargeable battery after calibration, this wireless air borne sensor will be through calibration and charging then, and be ready to exchange with another the wireless air borne sensor that need calibrate and charge.
The wired air borne sensor of essential safety also is positioned at the known location of underground mine.Wired air borne sensor preferably is connected in series to net-shape antenna network 26,28 by telecommunication cable.Each wired air borne sensor is configured to: receive electric energy from hub cable driver 30 via telecommunication cable; On each wired air borne sensor, detect airborne gas level; And regularly transmit to hub cable driver 30 by telecommunication cable.The signal of emission comprises discerns separately the unique identifier of air borne sensor and the horizontal read value of gas of indicating detected gas level.Each hub cable driver 30 is transmitted into server 36 with the signal that receives via data switching exchane 34.Server 36 with data storage in data-carrier store 38, and the workstation 40 gas level of using the data in the data-carrier stores 38 to follow the tracks of each wired air borne sensor.
H. data switching exchane
I. server/data-carrier store
J. workstation
K. software
Figure 12 illustrates representative server 36.Preferably, server 36 has redundant power, hard disk, fan and ethernet port.And server 36 preferably has the telemanagement card, is used for allowing server 36 is carried out telemanagement.Several program modules that server 36 will be described below carrying out, the step of exemplifying embodiment method is followed the tracks of miner and equipment in the mine to be used for using aforesaid label 20,22 and antenna 26a-26i, 28a-28i.
Figure 13-Figure 15 illustrates program module and can produce to be used for going up the representative screenshot that shows at display workstation 40 (Fig. 1).Display workstation 40 preferably connects via Ethernet and server 36 communicates.
Figure 13 is that exemplary map shows 270, is used to discern miner, unit, equipment or equipment group.For example, map shows node 272 expression antenna 26a-26i, the 28a-28i (Fig. 1) on 270.By selecting node 272, map shows window 274 identification selected antenna 26a-26i, the 28a-28i that occur on 270, and lists current miner who occurs on this position or equipment (being label 20,22 (Fig. 1)).Map shows that 270 can have zoom capabilities.
Figure 14 is that example data shows 280, and it shows the details of antenna 26a-26i, 28a-28i (Fig. 1) and label 20,22 (Fig. 1), and can be classified by label 20,22 or antenna 26a-26i, 28a-28i.Data presentation 280 comprises antenna identification/state region 282, selected label details zone 284 and all list of labels 286 that occur near selected antenna 26a-26i, 28a-28i.Selected label details zone 284 can also comprise the miner that is associated with label 20,22 or the photo 288 of equipment.
Figure 15 is that exemplary assembly monitors demonstration 290, and it is used for being presented at the assembly area and shows the miner and confirm tag operational.Assembling monitor scope 290 comprises: first area 292 is used for discerning personnel's label 20 of the miner who does not also handle registration; Second area 294 is used for discerning miner's label 20 of having handled registration; And the 3rd zone 296, be used for being identified in personnel's label 20 of the miner who occurs on the antenna of assembly area.
Figure 16-Figure 22 diagram is used for using above-mentioned label (for example 20,22) and antenna (for example 26a-26i, 28a-28i) to follow the tracks of the miner of mine and the example software system 100 of equipment.Quote label 20,22 and antenna 26a-26i, 28a-28i so, in the following description and should be understood to refer to above-mentioned exemplary label (for example 20,22) and antenna (for example 26a-26i, 28a-28i).
Figure 16 is the architectural overview figure of example software system 100, comprise software module, this software module comprises: server module 101, administration module 102, check module 103, monitor module 104, key module 105, OPC module 106, sensing data shared storage 107, label data shared storage 108, reader communication shared storage 110, server database 112 and RS order shared storage 114.
In addition, server object 101a-101e communicates mutually by the reader communication shared storage 110 of having stored digital radio message.101 pairs of digital radio message that once received by an above antenna (for example 26a-26i, 28a-28i) of server module are filtered, and the location storage of antenna that only will have the digital radio message of peak signal and receive this signal is in label data shared storage 108.In this way, server module 101 is determined the position of label 20,22 by determining the position of nearest antenna (for example 26a-26i, 28a-28i) (promptly receiving the antenna of peak signal).
Sensing data is stored in the sensing data shared storage 107.
In server database 112, administration module 102 is safeguarded live label data table 113 and historical data table 115.Live label data table 113 comprises the current data that reads as from hub cable driver 30 and each antenna (for example 26a-26i, 28a-28i) that is attached to system 10.Administration module 102 is stored in the historical trace label data in the historical data table 115, is used for the position history of each tracking tags 20,22 with maintenance.
Check that module 103 provides two major functions with respect to server database 112.A function provides the vision overview of mine, comprise multistage map and with the position display of tracking tags 20,22 on map.Another function provides the tracking data view of form, and the two is used to implement Track Date Central Table 113 and historical data table 115.In addition, check that module 103 can also produce interim (ad hoc) and predetermined report from the data live label data table 113 and the historical data table 115.
Check that module 103 also provides multiple other functions.A kind of function allows the user to add, when revising or removing antenna (for example 26a-26i, 28a-28i), with respect to map the positional information of antenna (for example 26a-26i, 28a-28i) is edited from system 10.Whether another function is optionally to select the data of label 20,22 to be filtered, such as only at current order of classes or grades at school or when active tags is read into live label data table 113.Display module 103 also provides and tracking tags 20,22 is navigated to current location and navigate to the rearmost position that tracking tags 20,22 is read, then with these position Visual Display in map and form.Another function that display module 103 provides is the details that editor is associated with specific label.These details can comprise such as following clauses and subclauses: the individual in job number, warehouse ID and the database or the photo of property.
104 pairs of database report of monitor module and state notifying provide the Email support.Monitor module 104 also provides method to come the operation of Clean Up Database form, Clean Up Database routine and monitor management module 102.
Figure 17 is the process flow diagram of server module 101, and server module 101 act as the interface of antenna (for example 26a-26i, 28a-28i).Reader initialization procedure 116 at first carries out initialization to hub cable driver 30 and all antennas (for example 26a-26i, 28a-28i), comprise the state that reads hub cable driver 30 and antenna (for example 26a-26i, 28a-28i), and read historical data from hub cable driver 30 and antenna (for example 26a-26i, 28a-28i).This provides when server 36 is delayed machine (down), reads the function of information from hub cable driver 30 and antenna (for example 26a-26i, 28a-28i).After reader initialization procedure 116, in server module 101, carry out six processes.
First process is a stream processing procedure 118.In case reader initialization procedure 116 is finished, then hub cable driver 30 and antenna (for example 26a-26i, 28a-28i) enter " data stream " pattern.In " data stream " pattern, hub cable driver 30 and antenna (for example 26a-26i, 28a-28i) " outflow " come from each label 20,22, be read into the data of server 36, the ID that comprises timestamp, label, the ID of the antenna of received signal and RSSI (signal strength indicator that receives) value.As mentioned above, the server object 101a-101e of each operation handles hub cable driver 30 and antenna (for example 26a-26i, 28a-28i), in step 120, verify label data, and in step 122, label data stored into reader communication shared storage 110.
Second process is a tag data process process 124, is used to handle the data from reader communication shared storage 110.Reader communication shared storage 110 is as the buffering of data, and tag data process process 124 reads the data that cushioned, and only storage is used on special time having the label data of the digital radio message of high RSSI for specific label 20,22.The data storage that tag data process process 124 will cushion or filter arrives label data shared storage 108, thereby is identified in the antenna that special time is close to label 20,22 most.Buffering course has only been guaranteed effective, new and the strongest label data are passed to administration module 102, being used for being stored in server database 112.
The 3rd process is a sensing data processing procedure 126, is used for the sensing data of process sensor data shared storage 107.
The 4th process is a display process process 128.Display process 128 shows the state and the monitor communication of hub cable driver 30 and antenna (for example 26a-26i, 28a-28i).
The 5th process is a debugging processing procedure 130, and it provides and can carry out the fault eliminating to the processing that moves in program to slip-stick artist or technician, and whether definite label data stores correct ability.This finishes this data presentation in server module 101 then by collecting data in the available tracking frame.
The 6th process is a control and treatment process 132, is used for handling from the order of administration module 102.Administration module 102 sends to RS order shared storage 114 with order, and 132 pairs of orders of control and treatment process are handled, and provide suitable operation steps then in server module 101.
Figure 18 is the process flow diagram of administration module 102, and it provides the management to hub cable driver 30 and associated antennas (for example 26a-26i, 28a-28i).
First process is a reader server display process process 140.Reader server display process process 140 reading of data library informations, and server is described and server state (frame 142) is presented on the main screen of administration module 102 generations with form.
Second process is a reader server definition process process 144.Reader server definition process process 144 is at hub cable driver 30 and associated antennas (for example 26a-26i, 28a-28i) is current when not being in activity, and system 10 is carried out initialization.It is registered new server, re-registers or edit old server, and (frame 146) nullified or deleted to server from system 10.
The 3rd process is a control request process 148.Control request process 148 combines operation with the control and treatment process 132 (Figure 17) of server module 101.Control request is handled 148 and is provided a kind of method that global command and single reader particular command (frame 150) is sent to server module 101 and server object (for example 102a-102e) to the operator.The example of these functions is: the option in the server object is set, such as the function of opening every day such as time synchronized, in case reader history is just removed in perhaps server module 101 initialization.Control request process 148 also provides such as instant cleaning history or the synchronous order of force time.Via RS order shared storage district 114, these data are sent to server module 101 and server object (for example 101a-101e).
The 4th process is a label data stores processor process 152.Data storage processing process 152 provides the major function of administration module 104, is to server database 112 with data storage.First step 154 will be from label data shared storage 108 reading tag data.Then, in step 156, label data is stored into the live label data table 113 of server database 112.Further, additional treatments determines whether historical data table 115 also needs to upgrade.Historical data table 115 upgraded once at most in per 10 seconds, and determined labels 20,22 when administration module 104 and move to when drawing closer together with other antennas the new record of establishment in historical data table 115 from drawing closer together with an antenna 24.
Last process is a sensing data stores processor process 157, and it is the mirror image that is used for the label data stores processor process 152 of sensing data.
Figure 19 is the process flow diagram of monitor module process 104.Reader state is handled the state that detects hub cable driver 30 and associated antennas (for example 26a-26i, 28a-28i), and produces the notice that state is changed via e-mail.Report every day is handled and is produced report every day, daily record every day and label audit report.Test label monitor monitors device is tested label, and if test label be not movable, then send notice.Battery alarm monitoring monitor monitors the label that is used for the battery alarm, then sends notice if detect the battery alarm.Remote command is handled from the e-mail server reading order, and the order that comprises in the Email is handled.Every day, historical data and error label data were removed in cleaning.
Figure 20 is a process flow diagram of checking module 103, and it is provided for the main user interface of system 10.Display module 103 is used by operator in mine or technician, can the information that be stored in the server database 112 being carried out visualization.Display module 103 has three kinds of major function/processes.
First process is a Visual Display process 158, the hierarchical tree of the mine of its explicit user definition, and by selecting the key element in the tree, the user can check the different piece of mine.The user has these zoness of different in this mine is defined, and when being the data that are used to check from different mines in system, the ability that these zoness of different in the different mines are defined.The state of antenna (for example 26a-26i, 28a-28i) is presented on the vision map of mine, and state indicated by color, and each antenna (for example 26a-26i, 28a-28i) that the tabulation of label 20,22 can show on map is located to see.This tabulation is optionally, based on the activity level of label, based on current time and date and based on the group membership of label 20,22.
Second process is a form procedure for displaying 160, and it is with the form video data.Form procedure for displaying 160 provides the option that shows live label data and history tab data.Further, when selecting specific label 20,22 in form, form display process 160 shows the details that are used for this label 20,22, comprises such as title, job number, group membership and distribute to the individual of label 20,22 or the picture of equipment.
The last process of display module 103 is control function processes 162.The following function of control function process 162 definition, wherein: can select map image and it is stored in the server database 112; Can define the details of label 20,22, such as employee's quantity and photo; Can be by the position of " searching " button search miner or assets; Under the situation of the data area that selectivity is selected, can produce predetermined quick report or interim report; Can print the report that is used for individual tag 20,22, group membership or set of tags; And can define aerial position by drag-and-drop function.In addition, control function process 162 also provides the zone of definition mine and the image file that expression is used for the background in specific mine and zone.At last, control function process 162 comprises: if the known label 20,22 that leaves monitor area does not reappear in monitor area in predetermined amount of time, alarm then can manually be set come sounding.
Figure 21 is the process flow diagram of key module 105, and it must move and produce initialization string, or first key (" key A "), and it must report the generation of second key (" key B ").First key and second cipher key function are as the permission control system.
Figure 22 is the process flow diagram of OPC module 106, and it provides the method that data are passed in and out from the other system of supporting OPC (OLE that is used for process control).
L. additional step and configuration
Those skilled in the art will recognize under the prerequisite that does not depart from the present invention's instruction, other steps and configuration also are possible.The specific descriptions here, the specific detail of especially disclosed exemplary embodiment mainly is in order to understand clearly purpose, it should be interpreted as unnecessary restriction, those skilled in the art is after reading the disclosure, modification will become apparent, and can make modification under the prerequisite of the spirit or scope that do not depart from the requirement invention.
So scope of the present invention should be determined by claim and legal being equal to thereof, rather than be determined by the example that provides.
Claims (16)
1. system that is used at hazardous environment tracking individuals and equipment comprises:
Tracking tags is used for being attached to the personnel of described hazardous environment and of equipment, and described tracking tags is an essential safety, and regularly sends the radio signal that has comprised the unique tracking tags identification code that is used to discern described tracking tags;
The essential safety reader system comprises hub cable driver and a plurality of essential safety antenna, and described hub cable driver is connected by telecommunication cable with described a plurality of essential safety antennas;
Described hub cable driver be configured to via described telecommunication cable to described a plurality of essential safety antennas provide the essential safety electric energy and with described a plurality of essential safety antenna communications;
Described a plurality of essential safety antenna adopts the redundancy of selfreparing to connect the known location that infrastructure topology is arranged in described hazardous environment, each essential safety antenna is configured to: receive described radio signal from described tracking tags, and send data-signal via described telecommunication cable to described hub cable driver, described data-signal comprise be used for identification aerial the antenna identification code and be used for the tracking tags identification code of recognition and tracking label;
Wherein, owing to described essential safety tracking tags, described a plurality of essential safety antennas and described essential safety electric energy that comes from described hub cable driver and the essential safety attribute of communicating by letter, described system can continue to operate in explosive atmosphere; And
Wherein, although the described redundant infrastructure topology that connects makes described system when on the position of described redundant connection infrastructure topology communication disruption being arranged, also can continue operation.
2. the system as claimed in claim 1, wherein said essential safety tracking tags is attached to the safety helmet that personnel wore in the described hazardous environment.
3. the system as claimed in claim 1, wherein said essential safety tracking tags is attached to the equipment that is arranged in described hazardous environment, described essential safety tracking tags is used to receive the equipment state and the positional information of described equipment, and regularly sends to comprise and be used for discerning the unique device label identification code of described essential safety device label and the radio signal of described equipment state and positional information.
4. the system as claimed in claim 1, wherein each essential safety antenna has first voltage domain, switching regulator and second voltage domain, wherein each essential safety antenna is in order to maximize essential safety, receive the electric energy of first voltage in described first voltage domain, and use described switching regulator that the electric energy of described first voltage is converted to the electric energy of described second voltage domain for using in described second voltage domain.
5. the system as claimed in claim 1, wherein each essential safety antenna has and is used for a plurality of communication port of being connected with a plurality of other antennas, wherein said a plurality of communication port does not power up always and disconnects mutually, up to receive power up be connected described a plurality of communication port in the order of selected communication port.
6. the system as claimed in claim 1, wherein said hub cable driver has: output port is used to provide described essential safety electric energy and communicates by letter; IS protects piece, is used to detect the electric current and the voltage levvl at described output port place; And the hub microprocessor, be used for receiving described electric current and voltage levvl, and ought disconnect electric energy from described output port in case of necessity from described IS protection piece.
7. the system as claimed in claim 1, further comprise on the known location that is arranged in described hazardous environment and the essential safety air borne sensor of communicating by letter with described hub cable driver, described essential safety air borne sensor is configured to: detect in the airborne gas level at described essential safety air borne sensor place; And regularly signal is sent to described hub cable driver, described signal comprises the horizontal read value of gas that is used for discerning the unique identifier of described essential safety air borne sensor and is used to refer to detected gas level.
8. system as claimed in claim 7, wherein said essential safety air borne sensor is wireless air borne sensor.
9. system as claimed in claim 7, wherein said essential safety air borne sensor communicates by telecommunication cable and described hub cable driver, and wherein said essential safety air borne sensor further is constructed to receive electric energy via described telecommunication cable from described hub cable driver.
10. system that is used at hazardous environment tracking individuals and equipment comprises:
A plurality of tracking tags, each tracking tags are used for regularly sending the radio message that comprises unique tracking tags ID, and each tracking tags is attached to different personnel or the equipment that exists in described hazardous environment, and each tracking tags is an essential safety;
The essential safety reader system, comprise hub cable driver and a plurality of essential safety antenna, described a plurality of essential safety antenna is connected to described hub cable driver and adopts the redundant infrastructure topology that connects to interconnect by telecommunication cable, each antenna is arranged in the known location of described hazardous environment and is used for receiving radio message near tracking tags, the label data message of determining the signal strength values of the radio message that each receives and will being used for each radio message that receives sends to described hub cable driver, and each label data message comprises: the described radio message that receives, the antenna ID of described receiving antenna, with described signal strength values;
Server database; And
Server, described server comprises:
Server module is used for receiving label data message, determining the position of each tracking tags by the described antenna of determining to receive the described radio message with highest signal strength value from described hub cable driver;
Administration module is used for safeguarding the live label data table of described server data, and described live label data table comprises the current location data that is used for each tracking tags; And
Check module, be used for map, produce the demonstration of the current location of each tracking tags, and produce the selected demonstration of the data that are used for each tracking tags at least one part of described hazardous environment.
11. system as claimed in claim 10 further comprises the air borne sensor that at least one is communicated by letter with described hub cable driver; Wherein said server further comprises the sensing data shared storage.
12. system as claimed in claim 10 further comprises monitor module, is used to provide the Email support to database report and state notifying.
13. system as claimed in claim 12, wherein said monitor module is further used for reading with pack processing and is contained in order from the email message that e-mail server receives.
14. system as claimed in claim 10 further comprises key module, is used to provide the device based on the quantity control permission of antenna that allows and tracking tags.
15. system as claimed in claim 10 further comprises the OPC module, is used to allow the OPC visit of external client to described server.
16. system as claimed in claim 10, the wherein said module of checking is further used for, when the tracking tags of the known detection environs that leaves described essential safety reader system does not reappear in the detection environs of described essential safety reader system in predetermined amount of time, alarm then is set sends the sound.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US94380707P | 2007-06-13 | 2007-06-13 | |
| US60/943,807 | 2007-06-13 | ||
| PCT/US2008/066982 WO2008157402A2 (en) | 2007-06-13 | 2008-06-13 | System and method for tracking personnel and equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101765786A true CN101765786A (en) | 2010-06-30 |
| CN101765786B CN101765786B (en) | 2012-07-04 |
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|---|---|---|---|
| CN2008801008624A Expired - Fee Related CN101765786B (en) | 2007-06-13 | 2008-06-13 | System and method for tracking personnel and equipment |
Country Status (6)
| Country | Link |
|---|---|
| CN (1) | CN101765786B (en) |
| AU (1) | AU2008266007B2 (en) |
| CA (1) | CA2690752C (en) |
| DE (1) | DE112008001636T5 (en) |
| WO (1) | WO2008157402A2 (en) |
| ZA (1) | ZA200908779B (en) |
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| KR100544231B1 (en) * | 2003-12-22 | 2006-01-23 | 한국전자통신연구원 | System and method for position tracking service |
| KR100772013B1 (en) * | 2004-07-14 | 2007-10-31 | (주)유니콤트레이딩 | Rfid system for locating and tracking a moving object and communication method of between rf tag and reader |
| US7271679B2 (en) * | 2005-06-30 | 2007-09-18 | Intermec Ip Corp. | Apparatus and method to facilitate wireless communications of automatic data collection devices in potentially hazardous environments |
| US7715983B2 (en) * | 2006-11-30 | 2010-05-11 | International Business Machines Corporation | Detecting hazardous conditions in underground environments |
-
2008
- 2008-06-13 CA CA2690752A patent/CA2690752C/en active Active
- 2008-06-13 CN CN2008801008624A patent/CN101765786B/en not_active Expired - Fee Related
- 2008-06-13 AU AU2008266007A patent/AU2008266007B2/en active Active
- 2008-06-13 DE DE112008001636T patent/DE112008001636T5/en not_active Ceased
- 2008-06-13 WO PCT/US2008/066982 patent/WO2008157402A2/en active Application Filing
-
2009
- 2009-12-10 ZA ZA200908779A patent/ZA200908779B/en unknown
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103856248A (en) * | 2012-11-28 | 2014-06-11 | 安凯(广州)微电子技术有限公司 | Grazing-based Bluetooth detection method and electronic equipment |
| CN103856248B (en) * | 2012-11-28 | 2016-03-09 | 安凯(广州)微电子技术有限公司 | Based on the bluetooth detection method of herding and electronic equipment |
| CN103857066A (en) * | 2012-12-07 | 2014-06-11 | 纳普（上海）软件有限公司 | Wireless sensor network establishing system and method |
| CN103590855A (en) * | 2013-10-16 | 2014-02-19 | 镇江中煤电子有限公司 | Upper corner gas monitoring system |
| CN103590855B (en) * | 2013-10-16 | 2016-04-20 | 镇江中煤电子有限公司 | Gas at upper corner monitoring system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101765786B (en) | 2012-07-04 |
| ZA200908779B (en) | 2010-07-28 |
| AU2008266007A1 (en) | 2008-12-24 |
| WO2008157402A2 (en) | 2008-12-24 |
| CA2690752A1 (en) | 2008-12-24 |
| DE112008001636T5 (en) | 2010-08-05 |
| AU2008266007B2 (en) | 2012-10-04 |
| CA2690752C (en) | 2015-11-03 |
| WO2008157402A3 (en) | 2009-02-19 |
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