CN101261168A - Mining bracket pressure tester - Google Patents
Mining bracket pressure tester Download PDFInfo
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- CN101261168A CN101261168A CNA2008100159154A CN200810015915A CN101261168A CN 101261168 A CN101261168 A CN 101261168A CN A2008100159154 A CNA2008100159154 A CN A2008100159154A CN 200810015915 A CN200810015915 A CN 200810015915A CN 101261168 A CN101261168 A CN 101261168A
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- pressure tester
- bracket pressure
- mining bracket
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Abstract
The invention discloses a mine bracket pressure tester, comprising a shell and a circuit board; the front surface of the shell is provided with a display screen and a warning window; the circuit board consists of a power supply part, a signal collecting part, a signal amplification part, an A/D conversion part, a signal processing part, a digital display part, a signal remote transmission part and a control circuit part; the signal collecting part is a strain gauge sensor with the frequency signal of 200-1000 Hz; the strain gauge sensor is arranged at one side of the shell; the power supply part respectively provides the power for other parts. The mine bracket pressure tester not only can constantly detect the pressure of the top plate of the coal mine, but also can transmit the pressure upwards to the ground dispatching room by the original safety production monitoring system of the coal mine, provides safe production guarantees for the coal mine underground operation, and has high sensitiveness and safe and convenient use.
Description
Technical field:
The present invention relates to a kind of mining safety equipment, especially relate to a kind of mining bracket pressure tester.
Background technology:
In traditional three the Nature disasters that Safety of Coal Mine Production faced: gas explosion, top board roof fall, Shuitu go out, gas explosion people is the most known and is paid attention to, and the control of water has also had breakthrough must the progress along with the appearance of whole drainaging scheme and high powered water pump.But the research of top board roof fall does not also catch up with the Safety of Coal Mine Production requirement far away.Most of colliery also rests on the stage of manually monitoring roof pressure with the press table, postpone relevant leader greatly and understood next line data of mine, make the time of reasonable arrangement, and in the cycle of roof weighting, the people enters to observe also has certain danger.Certainly also the colliery mine pressure monitoring system has been installed in some colliery, because this system has adopted 232/485 transmission mode, can only become a system alone, has caused the repeated construction of system, invest very greatly, safeguard and to get up also to waste too much human and material resources.
Summary of the invention:
The objective of the invention is: avoid the defective of above-mentioned prior art, the mining bracket pressure tester that provides a kind of coal mine lower roof plate pressure to show, transmit and have the warning power down function constantly.
For achieving the above object, the technical scheme that the present invention takes is: comprise housing and wiring board, have display screen and window annunciator in the front of housing, wiring board is by power unit, the signals collecting part, the signal amplifying part branch, the A/D conversion portion, signal processing, digital display portion, the signal is far passed part, control circuit is partly formed, signal acquisition part is divided into the strain-ga(u)ge transducer of 200-1000hz frequency signal, strain-ga(u)ge transducer is positioned at a side of housing, and power unit is respectively the signals collecting part, the signal amplifying part branch, the A/D conversion portion, signal processing, digital display portion, the signal is far passed part, control circuit partly provides power supply.
The invention has the beneficial effects as follows: because the supporting signal of employing and coal mine safety monitoring system transmits, not only can detect the pressure of coal mine roof plate constantly, and be uploaded to the ground maneuvers chamber by the original safety production monitoring in colliery system, for coal mine operation provides safe production guarantee, highly sensitive, safe and convenient to use.
Description of drawings:
Fig. 1 is the synoptic diagram of mining bracket pressure tester of the present invention;
Fig. 2 is the left view of mining bracket pressure tester shown in Figure 1;
Fig. 3 is a schematic block circuit diagram of the present invention.
Embodiment:
From the left view of the synoptic diagram of mining bracket pressure tester of the present invention shown in Figure 1 and Fig. 2 as can be seen, the present invention is made up of housing 1 and wiring board 7, have display screen 2 and window annunciator 3 that organic glass is made in the front of housing 1, hook 4 is installed on the top of housing 1, and wiring board 7 is fixed on the housing 1 by fixed mount 8.Wiring board 7 partly is made up of power unit, signals collecting part, signal amplifying part branch, A/D conversion portion, signal processing, digital display portion, the signal is far passed part, control circuit.Signal acquisition part is divided into the strain-ga(u)ge transducer 6 of 200-1000hz frequency signal, and strain-ga(u)ge transducer 6 is installed in the bottom of housing 1, and aviation plug 5 also is equipped with in the bottom of housing 1, is used for the power unit and the external power supply of connection line plate.
From schematic block circuit diagram of the present invention shown in Figure 3 as can be seen, signals collecting partly is that strain-ga(u)ge transducer is transferred to the signal amplifying part branch to the signal of gathering, after amplifying, change through A/D again, signal enters single-chip microcomputer and carries out calculation process, the result handles the back through display circuit and shows on charactron, and by the teletransmission circuit with the signal is far passed to substation at a distance, divide to stand in and pass on the computer through the master control interface, analyze by software.Power unit is respectively signals collecting part, signal amplifying part branch, A/D conversion portion, signal processing, digital display portion, the signal is far passed part, control circuit partly provides power supply.
Power circuit is made up of D1-D3, R1-R4, L1, L2, C1-C4, IC1, IC2 etc., and IC1, IC2 are the DC-DC power regulator modules, can be 34063, D1-D3 is a diode, can be 4007, R1-R4 be the 1/2W metalfilmresistor, and C1-C4 is the dielectric capacitance device.Display circuit is made up of IC3-IC6, R5-R31,4 LED, and wherein IC3-IC6 is digital display driving integrated circuit, can be 74HC64 numeral display driving integrated circuit, and LED is the charactron display circuit, and R5-R31 is the 1/2W metalfilmresistor.Signal amplifies and the A/D change-over circuit is made up of IC7-IC9, R32-R40, C5, RW1, BG1 etc., wherein, IC7, IC8 are the signal amplification circuits, it can be OP07 amplifier integrated package, IC9 is signal (A/D) change-over circuit, can be 1549 integrated packages, and R32-R40 is a 1/2W metal film electric capacity, RW1 is an adjustable potentiometer, and BG1 is a triode.The signal is far passed circuit is made up of IC10, R41, R42, R43, C6-C10, BG2, BG3, D4, LED1.Wherein, IC10 is the teletransmission control chip, can be MAX232, and R41, R42, R43 are 1/2W metal film Chip-Rs, C6-C10 is SMD dielectric capacitance device, BG2 is the positive-negative-positive triode, can be 8550, and BG3 is a NPN type triode, can be 8050, D4 is a diode, can be 4148, and LED is a red light emitting diodes.Control circuit by R44, R45, IC11, form, wherein IC11 is a photoelectrical coupler, can be 4N31,4N33 etc., R44, R45 are SMD 1/2 metal film Chip-Rs.Sound light alarming circuit is made up of BG4, BG5, BG6, DW1, C11, R46-R51, SPEAKER, wherein BG4 is the positive-negative-positive triode, can be 8550, BG5, BG6 are NPN type triodes, can be 8050, C11 is the patch electrolysis capacitor, and R46-R51 is a 1/2W metal film Chip-R, and SPEAKER is the 5-12V hummer.
Use when of the present invention, feed the 18V direct current, power circuit carries out pressure drop and processing with voltage, for complete machine provides power supply, sensitive element (strain-ga(u)ge transducer) is gathered signal, behind signal amplification circuit and A/D change-over circuit, entering single-chip microcomputer handles, on the LED charactron, show then, and signal is uploaded to superior unit such as substation, analyze by software by the teletransmission circuit.
The present invention can be provided with zero point, full scale, alarm set point, outage point by telepilot, when displayed value reaches alarming value or power-down value, sensor can carry out corresponding action, for the staff of down-hole provides alerting signal, for avoiding casualties that signal is provided in time, for the safety in production in colliery provides reliable foundation.
Claims (6)
1, a kind of mining bracket pressure tester, comprise housing (1) and wiring board (7), it is characterized in that: have display screen (2) and window annunciator (3) in the front of housing (1), described wiring board (7) is by power unit, the signals collecting part, the signal amplifying part branch, the A/D conversion portion, signal processing, digital display portion, the signal is far passed part, control circuit is partly formed, described signal acquisition part is divided into the strain-ga(u)ge transducer (6) of 200-1000hz frequency signal, strain-ga(u)ge transducer (6) is positioned at a side of described housing (1), and described power unit is respectively the signals collecting part, the signal amplifying part branch, the A/D conversion portion, signal processing, digital display portion, the signal is far passed part, control circuit partly provides power supply.
2, mining bracket pressure tester according to claim 1 is characterized in that: described power unit comprises the power circuit that D1-D3, R1-R4, L1, L2, C1-C4, IC1, IC2 form.
3, mining bracket pressure tester according to claim 1 is characterized in that: described signal amplifying part is divided and the A/D conversion portion comprises that the signal that IC7-IC9, R32-R40, C5, RW1, BG1 form amplifies and the A/D change-over circuit.
4, mining bracket pressure tester according to claim 1 is characterized in that: described digital display portion comprises IC3-IC6, R5-R31,4 display circuits that LED forms.
5, mining bracket pressure tester according to claim 1 is characterized in that: described the signal is far passed partly comprises the signal is far passed circuit that IC10, R41, R42, R43, C6-C10, BG2, BG3, D4, LED1 form.
6, mining bracket pressure tester according to claim 1 is characterized in that: described control circuit partly comprises the control circuit that R44, R45, IC11 form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100159154A CN101261168A (en) | 2008-04-29 | 2008-04-29 | Mining bracket pressure tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100159154A CN101261168A (en) | 2008-04-29 | 2008-04-29 | Mining bracket pressure tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101261168A true CN101261168A (en) | 2008-09-10 |
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ID=39961766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100159154A Pending CN101261168A (en) | 2008-04-29 | 2008-04-29 | Mining bracket pressure tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101261168A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519644A (en) * | 2011-12-15 | 2012-06-27 | 湖南科技大学 | Force measuring device for truss anchor cable |
| CN109459085A (en) * | 2018-10-30 | 2019-03-12 | 郑州海威光电科技有限公司 | A kind of fixed test device for generator |
| CN109708795A (en) * | 2019-01-10 | 2019-05-03 | 宁波天远五金有限公司 | A kind of omnipotent dynamometer |
-
2008
- 2008-04-29 CN CNA2008100159154A patent/CN101261168A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519644A (en) * | 2011-12-15 | 2012-06-27 | 湖南科技大学 | Force measuring device for truss anchor cable |
| CN109459085A (en) * | 2018-10-30 | 2019-03-12 | 郑州海威光电科技有限公司 | A kind of fixed test device for generator |
| CN109708795A (en) * | 2019-01-10 | 2019-05-03 | 宁波天远五金有限公司 | A kind of omnipotent dynamometer |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080910 |