CN1786422A - Method and system for monitoring gas in mine - Google Patents
Method and system for monitoring gas in mine Download PDFInfo
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- CN1786422A CN1786422A CN 200510124211 CN200510124211A CN1786422A CN 1786422 A CN1786422 A CN 1786422A CN 200510124211 CN200510124211 CN 200510124211 CN 200510124211 A CN200510124211 A CN 200510124211A CN 1786422 A CN1786422 A CN 1786422A
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Abstract
The invention discloses mine gas monitoring method. It includes the following steps: using gas sensor to collect gas density data, transform to electrical signal, and send to center control chip; storing the electrical signal in storage after analog-digital conversion and sending it to data communication server by modem and wireless launching unit; transmitting gas density data to main control sever; accepting the image signal and transmitting to main control sever; collecting, analyzing, displaying, and reserving the signal, and sending various control signal to enter control chip. The invention also discloses the system. Compared with the current technique, the invention has the features to safe, reliable, flexible operation, and all-around function.
Description
Technical field
The present invention relates to a kind of method for supervising and system, more particularly, relate to a kind of monitoring gas in mine method and system that in the colliery, uses.
Background technology
In China, because coal-mining technique falls behind, gas explosion accident takes place again and again, makes China's mine disaster death toll reach tens external or even hundreds of times.In order to ensure underground work personnel's safety, be badly in need of a kind of method for safety monitoring and system, accident is reduced to a minimum.Yet existing gas detecting device is function singleness usually, and adopts hard-wired method more, can not prevent the generation of accident with number of ways.After accident takes place, also can't extend efficient help to rescue work.Therefore, need a kind of method for supervising and system, can monitor the underground work situation in real time and communicate, and environmental data under can production wells, for data qualification, put in order and gather data source is provided with the underground work personnel.
Summary of the invention
In order to overcome aforesaid problem, the invention provides a kind of monitoring gas in mine method and system, it can provide mobile gas detecting device for underground operators, it is unusual to make it in time detect gas density, and data are sent to the ground control centre, effectively monitor with operation, guarantee the safe handling of mine mine.
The technical solution used in the present invention is: a kind of monitoring gas in mine method, and it comprises:
Step 1, the firedamp sensor that passes through on the mobile working unit are gathered the gas density data;
Step 2, the gas density data of gathering are carried out the signal conversion, and send to the data communication services device by the wireless transmit mode;
Step 3, described data communication services device contain the signal of gas density information to the main control server transmission by wired or wireless mode, by middle control server gas density information is carried out safety analysis, the gas density that surpasses safety line is carried out alarm indication.
In described step 1, will gather the gas density data by the firedamp sensor on the described mobile working unit and be converted to electrical signal transfer to middle control chip;
In described step 2, by middle control chip the described signal of telecommunication is carried out storing in the detachable memory after the analog-to-digital conversion, and send to data communication server with carrier format via modem and wireless launcher;
In described step 3, described data communication server adopts the mode of relaying forwarding to send main control server to the signal of described gas density;
After described step 3, can also comprise:
Step 4, video monitoring server pass through the picture signal that the video relay receives and display monitor is taken, and it is transmitted to main control server;
The signal that step 5, main control server collection, analysis, demonstration and backup are sent by digital communications services device and video monitoring server, and control chip in by digital communications services device and video monitoring server various control signals being sent to, with control displaying contents and monitor shooting picture etc.
Further, this method also comprises: detect gas density by the gas concentration sensor on the steady job unit, and detect in air pressure, wind speed, temperature, humidity, dust concentration and the noise one or more by other sensor; Store in the detachable memory after the middle control chip analog-to-digital conversion of data on the steady job unit with above-mentioned each sensor acquisition, and send to data communication server by cable through modem.
Further, this method also comprises: according to its resource access of control of authority of the user who signs in to main control server, and authorize this user speech exchange control, check sensing data, check monitor video, control monitor angle, control display device and by in the functions such as earphone conversation one or more.
Further, this method also comprises: link together by the main control server of network with certain regional extent, realize remote monitoring and data sharing.
Preferably, firedamp sensor detects methane gas by heat catalytic element in this method, and control chip in sending into after amplifying by the bridge voltage difference that pre-amplification circuit will be caused by the temperature difference between heat catalytic element the two poles of the earth; A/D convertor circuit in the middle control chip is realized analog-to-digital conversion.
Another technical scheme provided by the invention is: a kind of monitoring gas in mine system, it comprises the mobile working unit, the digital communications services device, video monitoring server, video relay and main control server, wherein the mobile working unit comprises first gas detecting device, control chip in first, first modem, first detachable memory and wireless launcher, the control chip connects first gas detecting device and first modem in described first, be used for that the signal of telecommunication that described first gas detecting device detection produces is converted into data flow and send described first modem to, and by described wireless launcher described data flow is sent outward, detachable memory is therefrom controlled chip and is received detected various data; The digital communications services device is used for relaying and transmits data, and it comprises the receiving system that is used to receive the data of sending described mobile working unit; Video monitoring server is used for the picture signal that display monitor is taken, and the picture signal that is received is sent to main control server; The video relay is realized signal relay between video monitoring server and monitor; Main control server is connected with described digital communications services device and indoor PC unit, is used to gather, analyze, show and back up the sensor data stream of being sent by described digital communications services device, and controls the resource access of described indoor PC unit.
Further, this system also comprises the steady job unit, described fixed cell comprises second gas detecting device, control chip in second, second detachable memory, controlled monitor, display device and second modem, the control chip connects described second gas detecting device and described second modem in described second, be used for that the signal of telecommunication that described second gas detecting device detection produces is converted into data flow and send described second modem to, and send to described digital communications services device by cable, described second detachable memory is used for storing the detected data in steady job unit, described controlled monitor can be implemented monitoring according to the instruction of main control server, and described display device shows the main control server specify image.
Preferably, mobile working unit in this system also can comprise liquid crystal indicator and the acoustic-optic alarm that is connected with middle control chip respectively, described liquid crystal indicator is used for showing the gas density of nearest measurement, when gas density surpassed risk range, the described acoustic-optic alarm of control chip controls sent audible and visible alarm in first.
Preferably, the mobile working unit of this system also can comprise the two-way call device.
Preferably, the steady job unit of this system also can comprise one or more in air pressure probe, air velocity transducer, temperature pick up, humidity sensor, sensor of dust concentration and the noise transducer.
Preferably, the mobile working unit of this system is installed on safety helmet, mine lamp power or the Walkie talkie.
Further, this system also can comprise the electronic information display screen, and described electronic information display screen is controlled its displaying contents by main control server by cable.
In above-mentioned technical scheme, by the two kinds of devices in mobile working unit and steady job unit fire damp concentration is carried out real-time monitoring, reduced the possibility that accident takes place effectively, and the mode that adopts wireless transmission and cable transmission to combine, guaranteed that also data in time send to the ground control centre reliably, these data are indispensable for analysis in the future.In addition, the handle control can be carried out to downhole conditions as required in the ground control centre.Therefore, with respect to prior art, that the present invention has is safe and reliable, the characteristics of flexible operation and complete function.
Description of drawings
Fig. 1 is the method for supervising flow chart according to the embodiment of the invention;
Fig. 2 is the monitoring system block diagram according to the embodiment of the invention;
Fig. 3 is the mobile working cell schematics according to the embodiment of the invention;
Fig. 4 is the steady job cell schematics according to the embodiment of the invention.
The specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
The invention provides a kind of monitoring gas in mine method and system, except the gas measuring ability was provided, it goes back available wireless and wired mode sends to the ground control centre with data, the underground work situation is done further monitoring.
As shown in Figure 1, it is the method for supervising flow chart according to the embodiment of the invention.In the figure, in step 11, gather the gas density data by the firedamp sensor on the mobile working unit, and be converted to electrical signal transfer to middle control chip, in practical application, the normal heat catalytic element that adopts is measured gas density, the two poles of the earth of heat catalytic element are heated to (being generally about 400 degree) after a certain temperature, and the electric bridge that be connected with its two poles of the earth this moment is among the balance, places methane gas that flameless combustion can take place the utmost point in the two poles of the earth, make this utmost point temperature rise, it is big that resistance becomes, and the electric bridge two ends are balance no longer, produces voltage difference, by pre-amplification circuit this voltage difference is amplified again, finish signal conversion process.In other embodiments, also can adopt other can detect the method for methane concentration.In step 12, middle control chip carries out the described signal of telecommunication to store in the detachable memory after the analog-to-digital conversion, and sends to data communication server via modem and wireless launcher with carrier format.Middle control chip is made by single-chip microcomputer or embedded chip usually, and for example Philips's Arm7 chip disturbs in order to prevent each mobile working unit, and each signal can adopt different carrier waves.In step 13, data communication server is transmitted to main control server with described gas density data relaying.Can transmit by netting twine between data communication server and the main control server, also can be converted to after the analog signal by cable or telephone wire transmission by modem.In step 14, video monitoring server passes through the picture signal that the video relay receives and display monitor is taken, and it is transmitted to main control server.Video monitoring server can adopt various video monitoring systems on sale on the present market, also can develop voluntarily, because the bandwidth restriction, vision signal preferably adopts the cable mode to transmit, and under the situation that bandwidth allows, also can adopt wireless transmission method.In step 15, the signal that main control server collection, analysis, demonstration and backup are sent by digital communications services device and video monitoring server, and control chip in by digital communications services device and video monitoring server various control signals being sent to, with control displaying contents and monitor shooting picture etc.Main control server can carry out remote access by browser or client, the user signs in on the main control server at indoor PC, and carry out function corresponding according to the authority of oneself, as exchange of speech control, check sensing data, check monitor video, control monitor angle, control display device, by earphone and communication conversation etc.In a preferred embodiment, this method also comprises when gas density surpasses dangerous threshold value, gives the alarm by acoustic-optic alarm, takes measures to remind the staff.In other embodiments, this method also comprises one or more in the data such as gathering air pressure, wind speed, temperature, humidity, dust concentration and noise, and it is stored and be forwarded to the main control server analyzing and processing.In one embodiment, also the main control server of a plurality of systems in certain zone (as the whole province or the whole nation etc.) can be linked together by network, realize monitoring on a large scale and data analysis processing.
As shown in Figure 2, monitoring gas in mine of the present invention system comprises mobile working unit, digital communications services device, video monitoring server, monitor, video relay and main control server.Wherein the mobile working unit comprises first gas detecting device, control chip in first, first modem and wireless launcher, first gas detecting device can adopt sensing device to detect gas density by the carrier catalysis method, also can adopt other method to obtain concentration data, after obtained data are converted into the signal of telecommunication by electric bridge, the process pre-amplification circuit is sent to controls chip in first, after being converted to data signal with these data, analog to digital conversion circuit in first in the control chip sends to first modem, and send by wireless base station apparatus, owing in actual job, there is a plurality of mobile workings unit, therefore adopt unique encoding as identifier to each data flow, determine by these identifiers each data flow is by which mobile working unit to be sent at receiving terminal, so that data are carried out correct classification.The digital communications services device comprises receiving system, and described receiving system is used to receive the data that the mobile working unit sends.The digital communications services device can be connected with mobile working unit or other Data Source in each interior works unit, the mine, thereby can receive data from each unit or send data to each unit, so that data, services to be provided, this data transmit-receive can directly transmit, and also can transmit by relay when needed.The digital communications services device also can provide voice service function, makes that different working cell is realized one to one, the conversation of one-to-many, many-one and multi-to-multi.Main control server is connected with described digital communications services device and indoor PC unit, be used to gather, analyze, show and back up the sensor data stream of sending by described digital communications services device, and as the web server, for local area network users provides access resources.Main control server also can be realized the function of telephone exchange, it is the voice service of the control figure communication server, for analog signal, main control server can be different working cells and distributes different carrier waves, for data signal, main control server can be different working cells and distributes different headers, so that distinguish different users, realizes voice service and other business between the user.In one case, monitor directly is connected with monitor server, and this requires each monitor all will connect one group of cable to server, and wiring and maintenance are very inconvenient.In another case, monitor is connected with middle control chip, and middle control chip adds different identification codes according to the view data that is not all of monitor, after monitoring server is received data, confirm according to identification code which monitor is data be from, and reduction and show this data flow.Video monitoring server receives the signal of each road monitor by video cables, and it is transferred to main control server, and stores (as video-tape, magnetic tape station, hard disk or CD etc.) in the memory into.In addition, video monitoring server can with specifying the signal of monitor to be transferred to server, also can receive the control signal of main control server according to the demand of main control server, controls the supervision angle of monitor by monitor control cable.In one embodiment, described system also can comprise the electronic information display screen, and it is connected with main control server by cable, controls its displaying contents by main control server.
In a preferred embodiment, the mobile working unit can be installed on safety helmet, Walkie talkie or the mine lamp power.The mobile working unit also comprises sounding device or light-emitting device, for example buzzer and light emitting diode etc., and when gas density surpasses safe range, as 1% o'clock, the light-emitting device flicker was to remind the staff, and buzzer then sounds the alarm.In a preferred embodiment, the mobile working unit also comprises liquid crystal indicator, and it is controlled by control chip in first and shows gas density numerical value.In a preferred embodiment; described mobile working unit also can comprise a detachable memory; detachable memory is connected with middle control chip; the gas density data that the storage firedamp sensor records; be provided with protecting sheathing in the detachable memory outside; guarantee that detachable memory can remain intact, and plays the effect of black box when gas explosion accident takes place.Like this,, the data that store can be saved in the central database, for being equipped with the usefulness in future, and after accident takes place, more can be and reproduce the scene of the accident, inquire about cause of accident rare data are provided normally in service.Because flash memory has shockproof and jamproof characteristic, so detachable memory preferably adopts flash memory, in certain embodiments, also can adopt other suitable memory device.Owing to the finite capacity of memory, for example can only store 24 hours data, after the information of collecting surpassed 24 hours, middle control chip controls detachable memory only kept nearest 24 hours data.In some concrete preferred embodiments, the mobile working unit can be made into independent equipment and uses, also can be installed in the mobile working unit in the safety helmet, on the mine lamp power or handheld device (as Walkie talkie) go up comparatively safe firm position.For example, when having an accident, the safety helmet top is usually destroyed, and therefore control processing circuit is installed in the side-walls between cap body and the cap tire.In force, difference according to equipment can be carried out corresponding setting, for example the liquid crystal indicator on the safety helmet can't be seen for wearer self, therefore in actual applications, not only liquid crystal indicator can be installed in the safety helmet front portion, also it can be installed in the visible positions of other people such as safety helmet rear portion or side, liquid crystal indicator can show gas density always in real time, but in certain embodiments, the people works together because the underground labour is usually many, therefore also can adopt the mode that shows at regular intervals once, for example every 30 seconds or 1 minute, for many people, in saves energy, can reach same display effect like this.In a further advantageous embodiment, the mobile working unit also is equipped with the two-way call device, for example also microphone and loudspeaker can be installed respectively on the bottom and the top of safety helmet frenulum, so that connect each other between the staff or between staff and the ground controller.The parts that electric phenomenon may take place in the above-mentioned various device should be isolated with methane gas.
With reference now to Fig. 3,, in a preferred embodiment, the mine gas monitoring system further comprises the steady job unit, it comprises controls chip, second modem in second gas detecting device, second, above-mentioned three devices adopt to be controlled chip, second modem in first gas detecting device, second with the mobile working unit and similarly be connected and working method.Similarly, in certain embodiments, the steady job unit also can comprise detachable memory and/or two-way call device.The steady job unit also can comprise the sensor that multiple and middle control chip is connected, for example measure the sensor of air pressure, wind speed, temperature, humidity, dust concentration and noise etc., with further collection subsurface environment data, these data can show by the various display devices in the steady job unit (as liquid crystal indicator and CRT display device etc.), and send to ground receiving wastewater facility by cable or wireless mode.These sensors of measuring air pressure, wind speed, temperature, humidity, dust concentration and noise etc. also can be installed on the mobile working unit, and control its collection of chip controls and transmission in first.
Main control server is (being the voice service of the control figure communication server) except the telephone exchange function, also can be used as the video monitoring console, be integrated in the computer by the function of software video monitoring, and the angle of control monitor and the content of display device, as the liquid crystal indicator of electronic information display screen and mobile working unit and the display device of steady job unit.In some specific embodiments, the staff carries out oneself work in indoor PC unit by the login main control server, this moment, main control server was as the web server, difference according to server program, the user who is positioned at indoor PC unit signs in to main control server by browser or specialized client program, server is according to user's type, authorize this user with corresponding authority, for example: the security personnel can manage surveillance, the foreground can forward call, the engineer can check data etc., and the function that indoor PC can carry out the unit comprises exchange of speech control, check sensing data, check monitor video, control monitor angle, control display device and by earphone and communication conversation etc.In addition, main control server is realized collection, analysis, demonstration, the backup functionality of sensing data, in actual applications, also can further be summarised in the database of an information centre by the mass data of network with a plurality of main control servers in a plurality of mines, the user can realize large-scale data sharing via the own data of being paid close attention to of this information centre's inquiry.
Monitoring gas in mine method and system of the present invention can use on the colliery, this system monitors downhole conditions via mobile working unit and steady job unit in real time by wireless or cable mode, collection, analysis, demonstration and backup environment data, when detecting the gas density excess, except the sound and light alarm of mobile working unit, the ground control centre also can remind the staff to leave as early as possible by electronic display and call mode, and organize the work of effectively dredging, after accident takes place, also can and inquire about cause of accident and offer help for the tissue rescue.
Those skilled in the art are to be understood that; the disclosed specific embodiment of the present invention is not that the present invention is carried out any restriction; but in order to make the those skilled in the art more clearly understand the present invention, protection scope of the present invention is defined by appended claims.
Claims (10)
1. monitoring gas in mine method, it comprises:
Step 1, the firedamp sensor that passes through on the mobile working unit are gathered the gas density data;
Step 2, the gas density data of gathering are carried out the signal conversion, and send to the data communication services device by the wireless transmit mode;
Step 3, described data communication services device contain the signal of gas density information to the main control server transmission by wired or wireless mode, by middle control server gas density information is carried out safety analysis, the gas density that surpasses safety line is carried out alarm indication.
2. monitoring gas in mine method according to claim 1 is characterized in that:
In described step 1, will gather the gas density data by the firedamp sensor on the described mobile working unit and be converted to electrical signal transfer to middle control chip;
In described step 2, by middle control chip the described signal of telecommunication is carried out storing in the detachable memory after the analog-to-digital conversion, and send to data communication server with carrier format via modem and wireless launcher;
In described step 3, described data communication server adopts the mode of relaying forwarding to send main control server to the signal of described gas density;
After described step 3, also comprise:
Step 4, video monitoring server pass through the picture signal that the video relay receives and display monitor is taken, and it is transmitted to main control server;
The signal that step 5, main control server collection, analysis, demonstration and backup are sent by digital communications services device and video monitoring server, and control chip in by digital communications services device and video monitoring server various control signals being sent to, with control displaying contents and monitor shooting picture etc.
3. method according to claim 1 and 2 is characterized in that it further may further comprise the steps:
According to its resource access of control of authority of the user who signs in to main control server, and authorize this user speech exchange control, check sensing data, check monitor video, control monitor angle, control display device and by in the functions such as earphone conversation one or more.
4. method according to claim 1 and 2 is characterized in that it further may further comprise the steps:
Link together by the main control server of network, realize remote monitoring and data sharing certain regional extent.
5. monitoring gas in mine method according to claim 1 is characterized in that further comprising the steps of:
Detect gas density by the gas concentration sensor on the steady job unit, and detect in air pressure, wind speed, temperature, humidity, dust concentration and the noise one or more by other sensor;
Store in the detachable memory after the middle control chip analog-to-digital conversion of data on the steady job unit with above-mentioned each sensor acquisition, and send to data communication server by cable through modem;
Firedamp sensor detects methane gas by heat catalytic element in the described step 1, and control chip in sending into after amplifying by the bridge voltage difference that pre-amplification circuit will be caused by the temperature difference between heat catalytic element the two poles of the earth;
Realize analog-to-digital conversion by the A/D convertor circuit in the middle control chip in the described step 2.
6. monitoring gas in mine system is characterized in that comprising:
The mobile working unit, it comprises controls chip, first modem, first detachable memory and wireless launcher in first gas detecting device, first, the control chip connects first gas detecting device and first modem in described first, be used for that the signal of telecommunication that described first gas detecting device detection produces is converted into data flow and send described first modem to, and by described wireless launcher described data flow is sent outward, detachable memory is therefrom controlled chip and is received detected various data;
The digital communications services device, it comprises receiving system, and described receiving system is used to receive the data that described mobile working unit sends, and described digital communications services device is used for relaying and transmits data;
Video monitoring server, it is used for the picture signal that display monitor is taken, and the picture signal that is received is sent to main control server;
The video relay, it realizes signal relay between video monitoring server and monitor;
Main control server, it is connected with described digital communications services device and indoor PC unit, is used to gather, analyze, show and back up the sensor data stream of being sent by described digital communications services device, and controls the resource access of described indoor PC unit.
7. monitoring gas in mine according to claim 6 system, it is characterized in that further comprising the steady job unit, described fixed cell comprises second gas detecting device, control chip in second, second detachable memory, controlled monitor, display device and second modem, the control chip connects described second gas detecting device and described second modem in described second, be used for that the signal of telecommunication that described second gas detecting device detection produces is converted into data flow and send described second modem to, and send to described digital communications services device by cable, described second detachable memory is used for storing the detected data in steady job unit, described controlled monitor can be implemented monitoring according to the instruction of main control server, and described display device shows the main control server specify image.
8. according to claim 6 or 7 described monitoring gas in mine systems, it is characterized in that described mobile working unit also comprises liquid crystal indicator and the acoustic-optic alarm that is connected with middle control chip respectively, described liquid crystal indicator is used for showing the gas density of nearest measurement, when gas density surpassed risk range, the described acoustic-optic alarm of control chip controls sent audible and visible alarm in first.
9. according to claim 6 or 7 described monitoring gas in mine systems, it is characterized in that described steady job unit also comprises one or more in air pressure probe, air velocity transducer, temperature pick up, humidity sensor, sensor of dust concentration and the noise transducer, described mobile working unit also comprises the two-way call device, and described mobile working unit is installed on safety helmet, mine lamp power or the Walkie talkie.
10. according to claim 6 or 7 described monitoring gas in mine systems, it is characterized in that it further comprises the electronic information display screen, described electronic information display screen is controlled its displaying contents by main control server by cable.
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