CN202903818U - Circuit arrangement of mining intrinsic-safe speed sensor - Google Patents
Circuit arrangement of mining intrinsic-safe speed sensor Download PDFInfo
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- CN202903818U CN202903818U CN 201220093671 CN201220093671U CN202903818U CN 202903818 U CN202903818 U CN 202903818U CN 201220093671 CN201220093671 CN 201220093671 CN 201220093671 U CN201220093671 U CN 201220093671U CN 202903818 U CN202903818 U CN 202903818U
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- mining intrinsic
- control circuit
- speed sensor
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Abstract
The utility model relates to circuit arrangement of a mining intrinsic-safe speed sensor, which is characterized by mainly comprising three parts, i.e., a frequency output circuit (1), a speed control circuit (2) and a nixie tube display circuit. The frequency output circuit (1) is installed in a roller of the mining intrinsic-safe speed sensor; a frequency amount output terminal of the frequency output circuit (1) is connected with a signal reception terminal of the speed control circuit (2); and a nixie tube (3) is connected with a display output terminal of the speed control circuit (2). The circuit arrangement of the mining intrinsic-safe speed sensor is convenient to use and also convenient for underground maintenance, wherein it is only required to fix a support on a stand of a belt conveyor via a built-in steel cable to enable the roller fall freely onto a belt; and equipment sealing performance of the circuit arrangement is good, mechanism of same is simple, and the circuit arrangement basically belongs to maintenance-free products.
Description
Technical field
The utility model relates to the sensor circuit device of colliery underground belt conveyor, specifically a kind of colliery underground survey belt feeder speed and have the intelligent mining intrinsic safety type speed sensor circuit device of belt feeder fault detect and defencive function.
Background technology
In the energy industry of China, coal accounts for about 70% in China's primary energy production and consumption structure, expects the year two thousand fifty also will account for more than 50%.Therefore, coal will be the main energy sources of China within quite long period.Current, the rapid growth of China's economy is had higher requirement to Dissertation of Development of Coal Industry., must strengthen safety in production for this reason, guarantee that coal industry continues, stable, sound development.The coal mining of China 95% is underground work.Coal mining accident account for industrial and mining enterprises once the above serious accident of dead 10 people 72.8% to 89.6%(2002-2005); Once in the above accident of dead 10 people, gas accident accounts for 71% of death toll in coal mining enterprise.The serious disasters and accidents that the colliery faces are severes, and the loss that causes is extremely heavy.
Because coal mining accident is many, death toll is many, has caused 1,000,000 tons of mortality ratio of China's coal-mine always high.Particularly taking place frequently of the great and especially big gas in colliery (coal dust) disaster accident not only caused the massive losses of national wealth and citizen's life, and had a strong impact on the international fame of China.
In fact, the generation of these gas accidents is not accidental, and it is in the past in-problem concentrated exposure in the coal production process, relates to many aspects.The deficiency of existing natural cause, input in science and technology and research also has human factor and national system, management, economic policy, the traditional concept of society, cultural quality of coal mining enterprise etc.
Summary of the invention
For the potential faults that solves the underground belt conveyor broken belt, skids, hypervelocity etc. causes; technical barrier to be solved in the utility model provides a kind of safe and reliable; a kind of mining intrinsic safety type speed sensor circuit device easy to maintenance, as to measure belt speed, monitoring belt feeder fault and belt feeder be carried out real-time guard.
The purpose of this utility model is achieved through the following technical solutions:
A kind of mining intrinsic safety type speed sensor circuit device, it mainly is comprised of three parts: frequency output circuit 1, speed control circuit 2 and digital pipe display circuit three parts form.Frequency output circuit 1 is installed in the roller of mining intrinsic safety type speed pickup, detect the roller rolling amount and change the square wave frequency amount into, the signal receiving end of the frequency quantity output terminal connection speed control circuit 2 of frequency output circuit 1, judge belt feeder ruuning situation and output switch amount signal and standard analog amount signal by control circuit, charactron 3 connects the demonstration output terminal of speed control circuit 2, is used for showing real-time speed.
Described frequency output circuit 1 and speed control circuit 2 all adopt the intrinsically safe circuit design, and frequency output circuit 1 is provided with the voltage input interface of 18V, 12V and 5V, only need the change wire jumper just can accept 18V, 12V, the input of 5V wide cut voltage.
Described speed control circuit 2 adds peripheral circuit by the Philip single-chip microcomputer and forms.The Philip single-chip microcomputer adopts the Single Chip C Language programming; mainly has belt feeder fault automatic identification function; can identify that belt feeder skids, ruptures, exceeds the speed limit, the fault such as normal boot-strap not; have the speed transmitting function and can be converted into speed the analog signals of the 4-20ma of standard; possess relay protecting function, and the real-time Presentation Function of speed.
The circuit of this speed pickup has all adopted the intrinsically safe circuit design, and control program is independent development.
The beneficial effects of the utility model and advantage are:
1. mining intrinsic safety type speed sensor circuit apparatus structure of the present utility model is compact, and is easy and simple to handle.For the design of belt feeder narrow space, the velocity amplitude that only has two key operations to input required protection gets final product.
2. mining intrinsic safety type speed sensor circuit device electrical security of the present utility model is good, and reliability is high.Detect by national structure, obtained conformity certificate of protection and peace standard card.
4. mining intrinsic safety type speed sensor circuit device of the present utility model is easy to use, is convenient to the down-hole and safeguards.Only need support is fixed on the support of belt feeder with the wirerope that carries, allow roller freely drop on the belt.The equipment sealing is good, the simple basic non-maintaining product that belongs to of mechanism.
Description of drawings
Fig. 1 is mining intrinsic safety type speed pickup structure composition diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
A kind of mining intrinsic safety type speed sensor circuit device, it mainly is comprised of three parts: frequency output circuit 1, speed control circuit 2 and digital pipe display circuit three parts form.Frequency output circuit 1 is installed in the roller of mining intrinsic safety type speed pickup, detect the roller rolling amount and change the square wave frequency amount into, the signal receiving end of the frequency quantity output terminal connection speed control circuit 2 of frequency output circuit 1, judge belt feeder ruuning situation and output switch amount signal and standard analog amount signal by control circuit, charactron 3 connects the demonstration output terminal of speed control circuit 2, is used for showing real-time speed.
Frequency output circuit 1 and speed control circuit 2 all adopt the intrinsically safe circuit design, and frequency output circuit 1 is provided with the voltage input interface of 18V, 12V and 5V, only need the change wire jumper just can accept 18V, 12V, the input of 5V wide cut voltage.
A kind of mining intrinsic safety type speed pickup is installed in the lower belt of belt feeder, and it comprises speed pickup and velocity transducer two parts.Its two parts are connected into one by a triple cable.Speed pickup by roller, code-disc, frequency output circuit plate 5, terminal box 6, mounting bracket form, when roller rolling code disc rotation frequency output board all over the transformable frequency signal of output, the tubular shaft 7 usefulness cables of frequency signal by the roller center are connected in the terminal box on the support.From the junction box cable frequency signal is connected on the control circuit board of transmitter again.There is control circuit to cooperate the single-chip microcomputer of Philip that the frequency signal that detects is processed on the control circuit board, makes it obtain the belt speed of belt and be presented on the charactron.Also can judge according to the variation of frequency signal the running status of belt; determine with this whether belt feeder has fault; can realize by the control circuit that the self-contained relay of transmitter disconnects belt feeder the protection of belt feeder if any fault; can also send to central station of floating dock to the analog signals that speed develops into standard, make central station of floating dock possess the measuring ability of belt feeder speed.Mining intrinsic safety type speed sensor circuit device of the present utility model is installed in the above-mentioned mining intrinsic safety type speed pickup.
The circuit of mining intrinsic safety type speed sensor circuit device of the present utility model all adopts the intrinsically safe circuit design; 1 of frequency output circuit needs the change wire jumper just can accept 18V; 12V; the input of 5V wide cut voltage; speed control circuit 2 adds the peripheral circuit exploitation by the Philip single-chip microcomputer and forms; single-chip microcomputer adopts the Single Chip C Language programming; mainly has belt feeder fault automatic identification function; can identify belt feeder skids; fracture; hypervelocity; the fault such as normal boot-strap not; have the speed transmitting function and can be converted into speed the analog signals of the 4-20ma of standard; possess relay protecting function, and the real-time Presentation Function of speed.
Claims (3)
1. mining intrinsic safety type speed sensor circuit device, it is characterized in that it mainly is comprised of three parts: frequency output circuit (1), speed control circuit (2) and digital pipe display circuit three parts form, frequency output circuit (1) is installed in the roller of mining intrinsic safety type speed pickup, the signal receiving end of the frequency quantity output terminal connection speed control circuit (2) of frequency output circuit (1), charactron (3) connects the demonstration output terminal of speed control circuit (2).
2. a kind of mining intrinsic safety type speed sensor circuit device according to claim 1, it is characterized in that: described frequency output circuit (1) and speed control circuit (2) all adopt the intrinsically safe circuit design, and frequency output circuit (1) is provided with the voltage input interface of 18V, 12V and 5V.
3. a kind of mining intrinsic safety type speed sensor circuit device according to claim 1, it is characterized in that: described speed control circuit (2) adds peripheral circuit by the Philip single-chip microcomputer and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220093671 CN202903818U (en) | 2012-03-13 | 2012-03-13 | Circuit arrangement of mining intrinsic-safe speed sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220093671 CN202903818U (en) | 2012-03-13 | 2012-03-13 | Circuit arrangement of mining intrinsic-safe speed sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202903818U true CN202903818U (en) | 2013-04-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220093671 Expired - Fee Related CN202903818U (en) | 2012-03-13 | 2012-03-13 | Circuit arrangement of mining intrinsic-safe speed sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202903818U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707646A (en) * | 2012-03-13 | 2012-10-03 | 江苏新力科技实业有限公司 | Mining intrinsic safety speed sensor control circuit |
-
2012
- 2012-03-13 CN CN 201220093671 patent/CN202903818U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102707646A (en) * | 2012-03-13 | 2012-10-03 | 江苏新力科技实业有限公司 | Mining intrinsic safety speed sensor control circuit |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20180313 |