CN103560842A - Mine distress personnel multifrequency intelligence searching instrument based on RF signal catches - Google Patents
Mine distress personnel multifrequency intelligence searching instrument based on RF signal catches Download PDFInfo
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- CN103560842A CN103560842A CN201310549253.XA CN201310549253A CN103560842A CN 103560842 A CN103560842 A CN 103560842A CN 201310549253 A CN201310549253 A CN 201310549253A CN 103560842 A CN103560842 A CN 103560842A
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- 230000009429 distress Effects 0.000 title claims abstract description 25
- 238000001514 detection method Methods 0.000 claims description 12
- 230000001360 synchronised effect Effects 0.000 claims description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 2
- 239000004973 liquid crystal related substance Substances 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000010513 Stupor Diseases 0.000 description 1
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- 239000000779 smoke Substances 0.000 description 1
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Abstract
The invention discloses a mine distress personnel multi-frequency intelligent searching instrument based on RF signal capture, which comprises a directional antenna, a multi-frequency signal receiving unit, a signal processing unit and a display and alarm unit, wherein the directional antenna is used for receiving a multi-frequency signal; the directional antenna receives radio frequency signals sent by RFID cards with multiple frequencies of different persons in distress and transmits the signals to the multi-frequency signal receiving unit, the multi-frequency signal receiving unit transmits the signals to the signal processing unit, and the signal processing unit controls the display and alarm unit to display and alarm information according to signal characteristics after processing the signals. The searching instrument has the following advantages: the RFID card holder identity is not needed to be identified in the signal coverage range, so that the signal can be captured and an alarm can be given; the method comprises the following steps of (1) multi-band RF signal capture, wherein the RFID card can be compatible with two frequency bands of 2.4GHz and 433 MHz; the emergency signal is not required to be actively transmitted by the persons in danger, the directions of the persons in danger can be judged according to the signal intensity indication of the RFID card held by the persons in danger, and relevant acousto-optic and electric prompts are provided.
Description
Technical field
The invention belongs to mine distress personnel and search and rescue technical field, relate to a kind of mine distress personnel multifrequency intelligent search instrument based on RF signal capture.
Background technology
Because mine down-hole physical geographic environment is intricate, when mine generation disaster, tunnel traffic, ventilation condition worsen, and the severe situation such as high temperature, dense smoke, insufficient light all likely occurs, in recent years, time and the accident of mine disaster occurring causes the phenomenon of the dead group's wound of personnel group still commonplace.When there is mine disaster, to search and rescue in time the injured key that personnel become mine disaster rescue of being buried by pressure, but be limited by the restriction of search and rescue condition, current mine distress personnel is searched equipment and is all existed some shortcomings.
It is the distress signal that warning personnel initiatively send that current more existing search instruments require received signal, yet the distress personnel that this class search instrument cannot initiatively be launched distress signal for weak or stupor is inapplicable; Simultaneously such search instrument requires signal receiver and seek help confidential ask corresponding (phase mutual energy decoding) one by one, and this signal of just other distress personnels being sent out does not have effect, so being of limited application of this class search instrument.In addition, life detection or the search and rescue system of some that use at present based on RFID technology, its working frequency range is single, and need to decode, identify its ID to the signal receiving, and the rfid card providing for other suppliers but cannot read its ID data.
As can be seen here, existing search instrument all exists that more single, the searchable rfid card of function ratio is limited to a certain equipment supplier, equipment working frequency range is single and the problem such as universality is not strong, especially just there is very large limitation in the rescue group for a plurality of collieries of service, has limited its emergency management and rescue hunting zone.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of mine distress personnel multifrequency intelligent search instrument based on RF signal capture, this search instrument can be realized distress personnel search and acousto-optic-electric prompting fast.
For achieving the above object, the invention provides following technical scheme:
A mine distress personnel multifrequency intelligent search instrument for RF signal capture, comprises directional antenna, multiple-frequency signal receiving element, signal processing unit, demonstration and alarm unit; Directional antenna receives the radiofrequency signal that the rfid card of a plurality of frequencies of different distress personnels sends, and transmit signals to multiple-frequency signal receiving element, multiple-frequency signal receiving element transmits signals to signal processing unit, and signal processing unit carries out information demonstration and warning according to signal characteristic control demonstration and alarm unit after signal is processed.
Further, described multiple-frequency signal receiving element can receive the rfid card radiofrequency signal of a plurality of frequency ranges that comprise 2.4GHz and 433MHz frequency range.
Further, described multiple-frequency signal receiving element comprises reception bandpass filter, receives low noise amplifier and RF Power Splitter.
Further, signal processing unit comprises reception detection unit, synchronous detection unit and microcontroller; Described reception detection unit comprises reception wave detector, voltage amplifier, analog to digital converter and data latches; Described synchronous detection unit comprises synchronous detector, voltage amplifier, comparator and driver.
Further, described demonstration and alarm unit comprise liquid crystal display and audible-visual annunciator.
Further, this multifrequency intelligent search instrument also comprises chargeable lithium cell.
Beneficial effect of the present invention is: this multifrequency intelligent search instrument has the following advantages: in signal cover, do not need to identify RFID holder's identity and just can catch its signal and provide its warning; Multiband RF signal capture, can compatible 2.4GHz and the rfid card of two kinds of frequency ranges of 433MHz, and the signal that any RFID in affiliated frequency range is sent all can be caught, and can expand to all the other frequency ranges; Do not rely on distress personnel and initiatively launch distress signal, according to it, hold the distance distance that the indication of rfid card signal strength signal intensity can be judged distress personnel and rescue personnel, and have relevant acousto-optic-electric prompting.
Accompanying drawing explanation
In order to make object of the present invention, technical scheme and beneficial effect clearer, the invention provides following accompanying drawing and describe:
Fig. 1 is this search instrument operation principle schematic diagram;
Fig. 2 is this search instrument structural representation.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Fig. 1 is this search instrument operation principle schematic diagram, as shown in the figure, the rfid card of a plurality of frequencies sends electromagnetic wave radiofrequency signal by antenna, the antenna reception of the multifrequency intelligent search instrument that electromagnetic signal is described by the present invention, the signal receiving is finally informed the positional information of rfid card through receiving element and signal processing unit in the mode of acousto-optic-electric.Multiple-frequency signal receiving element can receive the rfid card radiofrequency signal of a plurality of frequency ranges that comprise 2.4GHz and 433MHz frequency range, and therefore, the signal that any RFID in affiliated frequency range is sent all can be caught, and can expand to all the other frequency ranges.
Fig. 2 is this search instrument structural representation, and in conjunction with Fig. 2, the present embodiment has been shown the specific works principle of search instrument of the present invention: the reception antenna of search instrument adopts directional antenna, can determine direction that radiofrequency signal is come.The radio wave signal receiving is by the outer clutter of band pass filter filtering band and noise, then by radio frequency cable and radio frequency out splice going splice, be sent to radio frequency low-noise amplifier, under the prerequisite of noise decrease, radiofrequency signal is amplified to processing, and the signal after processing is sent to radiofrequency signal power splitter, radiofrequency signal is divided into two-way, one tunnel is sent to reception detection unit, obtains the characteristic information such as intensity, pulsewidth, pulse period of electromagnetic signal, and synchronous detection unit is delivered on another road.The output signal that receives detection unit is amplified by operational amplifier, then by analog to digital converter (ADC), convert digital signal to, be sent to microprocessor, the characteristic information of basis signal converts figure to and numeral is presented in LCDs, according to the intensity of signal, control the warning that loudspeaker send corresponding decibel simultaneously.Rescue worker can judge by searcher's direction and distance and position according to the signal strength signal intensity of all directions, and then under the guidance of search instrument, find target.
Finally explanation is, above preferred embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is described in detail by above preferred embodiment, but those skilled in the art are to be understood that, can to it, make various changes in the form and details, and not depart from the claims in the present invention book limited range.
Claims (6)
1. the mine distress personnel multifrequency intelligent search instrument based on RF signal capture, is characterized in that: comprise directional antenna, multiple-frequency signal receiving element, signal processing unit, demonstration and alarm unit; Directional antenna receives the radiofrequency signal that the rfid card of a plurality of frequencies of different distress personnels sends, and transmit signals to multiple-frequency signal receiving element, multiple-frequency signal receiving element transmits signals to signal processing unit, and signal processing unit carries out information demonstration and warning according to signal characteristic control demonstration and alarm unit after signal is processed.
2. the mine distress personnel multifrequency intelligent search instrument based on RF signal capture according to claim 1, is characterized in that: described multiple-frequency signal receiving element can receive the rfid card radiofrequency signal of a plurality of frequency ranges that comprise 2.4GHz and 433MHz frequency range.
3. the mine distress personnel multifrequency intelligent search instrument based on RF signal capture according to claim 1, is characterized in that: described multiple-frequency signal receiving element comprises reception bandpass filter, receives low noise amplifier and RF Power Splitter.
4. the mine distress personnel multifrequency intelligent search instrument based on RF signal capture according to claim 1, is characterized in that: signal processing unit comprises reception detection unit, synchronous detection unit and microcontroller; Described reception detection unit comprises reception wave detector, voltage amplifier, analog to digital converter and data latches; Described synchronous detection unit comprises synchronous detector, voltage amplifier, comparator and driver.
5. the mine distress personnel multifrequency intelligent search instrument based on RF signal capture according to claim 1, is characterized in that: described demonstration and alarm unit comprise liquid crystal display and audible-visual annunciator.
6. the mine distress personnel multifrequency intelligent search instrument based on RF signal capture according to claim 1, is characterized in that: this multifrequency intelligent search instrument also comprises chargeable lithium cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310549253.XA CN103560842B (en) | 2013-11-06 | 2013-11-06 | Mine distress personnel multifrequency intelligence searching instrument based on RF signal catches |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310549253.XA CN103560842B (en) | 2013-11-06 | 2013-11-06 | Mine distress personnel multifrequency intelligence searching instrument based on RF signal catches |
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| Publication Number | Publication Date |
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| CN103560842A true CN103560842A (en) | 2014-02-05 |
| CN103560842B CN103560842B (en) | 2015-09-23 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105812001A (en) * | 2016-03-10 | 2016-07-27 | 上海斐讯数据通信技术有限公司 | Multiple-frequency signal common receiving method and system |
| CN106338528A (en) * | 2016-08-24 | 2017-01-18 | 刘学 | Radio wave display system |
| CN107341531A (en) * | 2017-07-12 | 2017-11-10 | 国网青海省电力公司海南供电公司 | A kind of electric power equipment management and alignment system |
| CN111271126A (en) * | 2018-12-04 | 2020-06-12 | 深圳市物联微电子有限公司 | Mine gas monitoring alarm system |
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| CN102222249A (en) * | 2011-07-25 | 2011-10-19 | 无锡里外半导体科技有限公司 | Radio frequency identification reader-writer |
| CN102708387A (en) * | 2012-04-19 | 2012-10-03 | 上海天臣防伪技术股份有限公司 | Multi-band RFID (radio-frequency identification) reader-writer and reading and writing method thereof |
| CN103295036A (en) * | 2013-05-08 | 2013-09-11 | 岳流锋 | Phase-locked carrier wave cancellation ultrahigh-frequency radio frequency identification reader and cancellation method thereof |
| CN203522758U (en) * | 2013-11-06 | 2014-04-02 | 中煤科工集团重庆研究院有限公司 | Mine distress personnel multifrequency intelligence searching instrument based on RF signal catches |
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2013
- 2013-11-06 CN CN201310549253.XA patent/CN103560842B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1892671A (en) * | 2005-07-01 | 2007-01-10 | 付屹东 | System for tracing target in long and large space using radio card |
| CN102222249A (en) * | 2011-07-25 | 2011-10-19 | 无锡里外半导体科技有限公司 | Radio frequency identification reader-writer |
| CN102708387A (en) * | 2012-04-19 | 2012-10-03 | 上海天臣防伪技术股份有限公司 | Multi-band RFID (radio-frequency identification) reader-writer and reading and writing method thereof |
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| CN203522758U (en) * | 2013-11-06 | 2014-04-02 | 中煤科工集团重庆研究院有限公司 | Mine distress personnel multifrequency intelligence searching instrument based on RF signal catches |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105812001A (en) * | 2016-03-10 | 2016-07-27 | 上海斐讯数据通信技术有限公司 | Multiple-frequency signal common receiving method and system |
| CN105812001B (en) * | 2016-03-10 | 2018-02-06 | 上海斐讯数据通信技术有限公司 | A kind of multiple-frequency signal shares method of reseptance and system |
| CN106338528A (en) * | 2016-08-24 | 2017-01-18 | 刘学 | Radio wave display system |
| CN107341531A (en) * | 2017-07-12 | 2017-11-10 | 国网青海省电力公司海南供电公司 | A kind of electric power equipment management and alignment system |
| CN111271126A (en) * | 2018-12-04 | 2020-06-12 | 深圳市物联微电子有限公司 | Mine gas monitoring alarm system |
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| Publication number | Publication date |
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| CN103560842B (en) | 2015-09-23 |
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