CN201638048U - Multifunctional monitor - Google Patents
Multifunctional monitor Download PDFInfo
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- CN201638048U CN201638048U CN2009200984293U CN200920098429U CN201638048U CN 201638048 U CN201638048 U CN 201638048U CN 2009200984293 U CN2009200984293 U CN 2009200984293U CN 200920098429 U CN200920098429 U CN 200920098429U CN 201638048 U CN201638048 U CN 201638048U
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- 238000012544 monitoring process Methods 0.000 claims abstract description 20
- 238000004891 communication Methods 0.000 claims abstract description 19
- 239000003245 coal Substances 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 47
- 238000012806 monitoring device Methods 0.000 claims description 14
- 238000005516 engineering process Methods 0.000 claims description 9
- 239000003063 flame retardant Substances 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 4
- 229920006351 engineering plastic Polymers 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 11
- 230000006855 networking Effects 0.000 abstract description 5
- 230000010354 integration Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 239000004606 Fillers/Extenders Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model belongs to the technical field of combustible gas detection, and relates to a multifunctional monitor, which is used for coal mine downhole safety monitoring. The multifunctional monitor comprises a single chip microcomputer, a signal processing circuit, a display circuit, a driving circuit and a CAN bus communication circuit, and the signal processing circuit, the display circuit and the driving circuit are connected with the single chip microcomputer. Besides, the single processing circuit is used for receiving switching value or analog quality input, an output of the single processing circuit is connected to the single-chip microcomputer, switching value output signals of the single chip microcomputer are output via the driving circuit, alarm signals of the single chip microcomputer are connected to an alarm circuit via the driving circuit, and the CAN bus communication circuit is used for being connected with CAN bus branches. Compared with other systems, a coal mine safety monitoring system formed by matching the monitor with other relative equipment in a networking form has the advantages in terms of system band width, response speed, reliability, networking flexibility, system efficiency, transmission distance, node capacity, integration capacity, compatibility and openness degree and the like.
Description
Technical field
The utility model relates to a kind of intelligent digitalized watch-dog that is used for the coal mine downhole safety monitoring.
Technical background
The China's coal-mine safety monitoring system traditional approach that mainly adopts master-slave mode architecture, time-devision system communication and patrol and examine for a long time, and connect analog sensor.This mode more and more can not adapt to the requirement of information acquisition, transmission, processing and the field control of modernized mine.
Along with the fast-developing and application of computer networking technology, in various fields such as communication, Industry Control, lives revolutionary variation has taken place all in recent years.It influences and has promoted the change and the development of supervisory system technology equally, " fieldbus " of the supervisory system bottom occurred network technology is applied to thereupon, and therefore this fieldbus is also referred to as " field network ".CAN_BUS obtains international standard the earliest in numerous fieldbus, also is through being considered to a kind of field bus technique of the most suitable coal mine underground monitoring system after the abundant demonstration.In addition, CAN_BUS is because the performance and the very high cost performance of himself brilliance, thereby becomes a focus of industrial control field technical development, is acknowledged as one of the most promising several fieldbus.
CAN_BUS has obtained wideling popularize in China's Industry Control and automatic field at present, and is that major contribution has been made in informationization, the modernization construction that promotes this field.
The utility model content
The purpose of this utility model is to overcome domestic coal mine safety monitoring system the deficiencies in the prior art, provides a kind of bus communication interface that has, the watch-dog that data transmission credibility is high.
For this reason, the utility model adopts following technical scheme:
A kind of multifunctional monitoring device that is used for the coal mine downhole safety supervisory system comprises single-chip microcomputer, and coupled signal processing circuit, display circuit and driving circuit.Signal processing circuit is used for receiving key amount or analog quantity input, single-chip microcomputer is received in its output, the switching value output signal of single-chip microcomputer is exported behind overdrive circuit, the alerting signal of single-chip microcomputer is connected to warning circuit through overdrive circuit, it is characterized in that, described multifunctional monitoring device also comprises CAN bus communication circuit, described CAN bus communication circuit is used for linking to each other with the CAN bus trunk, thereby realize following function: multifunctional monitoring device and hang over communication between the methane transducer on the CAN bus trunk, to the remote monitoring and the control of the external equipment that comprises ventilation blower, and with the ground central station computing machine between communicate by letter.
As preferred implementation, described watch-dog is an intrinsically safe equipment, and housing is that ABS is fire-retardant, the electrostatic prevention engineering plastics are made, and wiring board adopts the paster welding technology.
The utility model is to be powered by the intrinsic safety electric source in power extension controller or the bus extender, is the multifunctional monitoring device that is used for the coal mine downhole safety supervisory system of core with the single-chip microcomputer.This watch-dog is responsible for monitoring the start-stop signal of Fan Equipment under the coal mine, receives methane transducer data and control command related on the bus simultaneously.Subsequently these data are carried out analyzing and processing, and send control signals such as outage, blower fan locking to long-range topworks through CAN_BUS according to the requirement of wind-powered electricity generation methane locking rules under the coal mine.This equipment also can pass through the bus active upload to the ground central station computing machine with related data in addition.Major advantage is as follows:
[1] intelligent digital watch-dog
By initiatively monitoring and passive reception dual mode realization obtaining to a plurality of associate device data on the bus.After the data analysis processing, according to certain timely output alarm of control principle, outage control signal.And can relevant information be uploaded the ground central station computing machine immediately through bus.
[2] Chuan Xin data-transmission mode
Adopt the communication mode of field apparatus Monitoring Data active upload, many main competitions at home in the coal mine safety monitoring system first, the principal and subordinate who has abandoned traditional poor efficiency patrols and examines pattern.The data transfer mode of this innovation has reduced the bus data flow to greatest extent, has greatly promoted the communication efficiency of system, has guaranteed the supervisory system real time of data acquisition.
[3] Low-power Technology
This product uses the low-power consumption microcontroller of MicroChip company as core cell, is aided with effective power management, has greatly reduced power consumption when promoting the power supply service efficiency, meets the trend of energy-conserving and environment-protective.
[4] local outage control
The CAN_BUS methane transducer that is positioned at on-the-spot bottom can be directly related by bus and the foundation of multifunctional monitoring device, thereby sensing data need not can be sent to this equipment through central station computer or sub-station equipment forwarding, and then output outage control.Reduce intermediate link like this, really realized local control.
[5] long-range flexibly and local parameter setting
Central station computer can establish a communications link through the multifunctional monitoring device in bus and the system, thereby realizes it is carried out the remote parameter setting.Simultaneously also can use Infrared remote controller it to be carried out the parameter setting in this locality.
[6] anti-interference and reliability design
This product has been taked measures such as down Monitor Unit, WDT monitoring, the preservation of Flash parameter, can_bus overvoltage protection to pcb plate rational deployment, well-designed to circuit.On software, optimize meticulously simultaneously, make final products have very strong antijamming capability and reliability, fully satisfy site environment abominable under the coal mine.
In addition because the good characteristic of can_bus itself makes the can node have fault automatic blocking function.This equipment breaks away from bus automatically, thereby can the proper communication of miscellaneous equipment on the bus not had any impact when cause the multifunctional monitoring device to send data failure accumulative total above behind certain number of times owing to unexpected factor!
The can_bus localized network has stand-alone capability simultaneously.When break down in the network somewhere, other localized network can continue normal operation, thereby has greatly improved the reliability of network.
Description of drawings
The structured flowchart of Fig. 1 watch-dog of the present utility model.
Fig. 2 wind-powered electricity generation methane block sytem structural representation.
Embodiment
The utility model is a kind of CAN_BUS digital monitoring equipment that is positioned at the on-the-spot bottom that is applied in the domestic coal mine safety monitoring system, is mainly used in the signals collecting and the control signal output of wind-powered electricity generation methane locking control in driving face, coal-face and the return air zone and analog quantity, switching value.Has function from execution teleinstruction to central station computer that upload data, reception and simultaneously.Compare in system bandwidth, reaction velocity, reliability, networking flexibility, system effectiveness, transmission range with domestic existing other system by the coal mine safety monitoring system that uses this equipment and related sensor networking to form, the system node capacity, integration capability, aspect tools such as compatibility and opening have great advantage.
Watch-dog is made up of parts such as housing, circuit board module, display board, light warning, hummer, outgoing line devices.Housing adopts fire-retardant, the electrostatic prevention engineering plastics of ABS.Have fire-retardant, electrostatic prevention, shock resistance, characteristics such as in light weight, easy for installation, wiring board adopts the paster welding technology.
Fig. 1 is the circuit principle structure block diagram of the utility model watch-dog.A kind of multifunctional monitoring device that is used for the coal mine downhole safety supervisory system, comprise single-chip microcomputer, coupled signal processing circuit, display circuit and driving circuit, signal processing circuit is used for receiving key amount or analog quantity input, single-chip microcomputer is received in its output, the switching value output signal of single-chip microcomputer is exported behind overdrive circuit, the alerting signal of single-chip microcomputer is connected to warning circuit through overdrive circuit, in addition, the utility model also comprises CAN bus communication circuit, CAN bus communication circuit is used for linking to each other with the CAN bus trunk, thereby realize following function: this watch-dog and hang over communication between the methane transducer on the CAN bus trunk, to the remote monitoring and the control of the external equipment that comprises ventilation blower, and with the ground central station computing machine between communicate by letter.
Important technological parameters
Type of protection [of an electrical apparatus for explosive atmospheres: mining intrinsic safety type; Explosion-proof sign: ExibI
Condition of work
(a) temperature: 0～+ 40 ℃;
(b) relative humidity:＜98% (+25 ℃);
(c) atmospheric pressure: 80～116kPa.
(d) explosive gas atmosphere under the coal mine
Power supply: KDK-600/18 power extension controller or KJ86-U bus extender or the power supply of KJ86-J transmission interface
Running parameter
(a) operating voltage range: DC11V～19V;
(b) intrinsic safety parameter: Ui:DC18.9V; Ii:80mA; Ci:0.1nF; Li:0mH.
Input signal
(a) switching value signal: 8 tunnel passive contact signal inputs;
(b) analog signals: input of 3 tunnel 1～5mA current signals and the input of 4 road methane transducer CAN bus signals.
(c) output signal: 6 road high and low level switch amount outputs.
Transmission signals and transmission range
(a) CAN_BUS signal, baud rate are 5k bps.
(b) the transmission range 10km between watch-dog and the switch;
(c) the transmission range 2km between watch-dog and the sensor.
Warning function: warning sound level intensity is greater than 80dB; Light is reported to the police high-visible at dark 20m place.
Presentation Function: liquid crystal band demonstration backlight.4 methane transducer addresses, concentration value; The switching value input state; The switching value output state; The watch-dog working condition.
The wind-powered electricity generation methane closedown structure that this watch-dog is realized as shown in Figure 2, function is as follows:
When (a) the driving face methane concentration meets or exceeds 1.0%CH4, sound and light alarm; When the driving face methane concentration meets or exceeds 1.5%CH4, cut off all power supply and lockings of the electric equipment of non-intrinsically safe safety-type in the digging laneway; Automatic unlocking when driving face concentration is lower than 1.0%CH4;
When (b) methane concentration in the driving face return met or exceeded 1.0%CH4, sound and light alarm cut off all power supply and lockings of the electric equipment of non-intrinsically safe safety-type in the digging laneway simultaneously; When the methane concentration in the driving face return is lower than 1.0%CH4, automatic unlocking;
(c) go here and there driving face go into distinguished and admirable in methane concentration when meeting or exceeding 0.5%CH4, sound and light alarm cuts off by the power supply of whole electric equipment of non-intrinsically safe safety-type in the string digging laneway simultaneously by locking; When gone into by the string driving face distinguished and admirable in methane concentration when being lower than 0.5%CH4, automatic unlocking;
(d) auxiliary fan shuts down or air duct air quantity when being lower than setting, and sound and light alarm cuts off the power supply and the locking of the electric equipment of whole non-intrinsically safe safety-types in air feed zone simultaneously; When local ventilation blower or air duct recovery operate as normal, automatic unlocking;
(e) auxiliary fan shuts down, and when methane concentration was greater than 3.0%CH4 in driving face or the return, the reply auxiliary fan carried out locking and makes it fail to start, has only when can manual release by Password Operations software or specific purpose tool; When methane concentration is lower than 1.5%CH4 in driving face or the return, automatic unlocking;
Because the characteristic of CAN_BUS brilliance, high reliability and unique design are suitable for the coal mine safety monitoring field very much. The Field bus Monitoring System that connects other related sensor structure take the CAN_BUS Multifunctional monitor as the basis has following advantage:
[1] digitlization: connect each other by the mode of bus with digital communication between this Multifunctional monitor and spot sensor, reduced wiring, simplified hardware design. The intrinsic high accuracy of digitized signal, stronger antijamming capability have greatly improved the reliability of control system. The digital information that collects of industry spot can be realized closely being connected for the production of the LAN of management with enterprise by general information transmission platform (as: Ethernet) in addition, has greatly promoted the level of IT application of enterprise.
[2] the full distribution: each field apparatus has enough independences, independence in dcs, and they realize connecting each other to each other by correspondence. Can be distributed to various control functions in the various field apparatus fully, no longer rely on central control computer and issue control command, thereby realize real distributed control.
[3] transmitted in both directions: in traditional coal mine safety monitoring system, outstation all is connected by a cable with each analog sensor, can only transmit one tunnel analog signal on the line, and signal can only be from sensor to the substation one-way transmission. Field bus device then both can be uploaded monitored data earthward on a bus, also can issue control information to field apparatus, had realized the transmitted in both directions of information.
[4] save wiring: each instrument of traditional control system needs a client cables to be connected to central control equipment. And adopting the field bus device of CAN_BUS technology can be attempted by on the bus, all devices all carries out information exchange by bus, can save in a large number wiring like this.
[5] opening: field bus protocol was ratified formally to become international standard by IEC in 1999, thereby made fieldbus become a kind of technology of opening.
[6] intellectuality and independence: field bus device can be processed the information such as various parameters, running status and fault, and intelligent degree is higher. It can work alone in the situation of individual component even network local fault simultaneously, has greatly improved reliability and the fault-tolerant ability of whole control system.
Claims (2)
1. multifunctional monitoring device, be used for the coal mine downhole safety monitoring, comprise single-chip microcomputer, and coupled signal processing circuit, display circuit and driving circuit, signal processing circuit is used for receiving key amount or analog quantity input, single-chip microcomputer is received in its output, the switching value output signal of single-chip microcomputer is exported behind overdrive circuit, the alerting signal of single-chip microcomputer is connected to warning circuit through overdrive circuit, it is characterized in that, described multifunctional monitoring device also comprises CAN bus communication circuit, described CAN bus communication circuit is used for linking to each other with the CAN bus trunk, the CAN_BUS methane transducer that is positioned at on-the-spot bottom is directly related by bus and the foundation of multifunctional monitoring device, and central station computer establishes a communications link through bus and multifunctional monitoring device.
2. multifunctional monitoring device according to claim 1 is characterized in that, described watch-dog is an intrinsically safe equipment, and housing is that ABS is fire-retardant, the electrostatic prevention engineering plastics are made, and wiring board adopts the paster welding technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200984293U CN201638048U (en) | 2009-08-20 | 2009-08-20 | Multifunctional monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200984293U CN201638048U (en) | 2009-08-20 | 2009-08-20 | Multifunctional monitor |
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| Publication Number | Publication Date |
|---|---|
| CN201638048U true CN201638048U (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009200984293U Expired - Fee Related CN201638048U (en) | 2009-08-20 | 2009-08-20 | Multifunctional monitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236632A (en) * | 2014-09-27 | 2014-12-24 | 淮南万泰荣博照明科技有限公司 | Mining high-low voltage switch monitoring device |
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2009
- 2009-08-20 CN CN2009200984293U patent/CN201638048U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236632A (en) * | 2014-09-27 | 2014-12-24 | 淮南万泰荣博照明科技有限公司 | Mining high-low voltage switch monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20170820 |
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| CF01 | Termination of patent right due to non-payment of annual fee |