CN2077027U - Head plate monitoring alarm treating device - Google Patents
Head plate monitoring alarm treating device Download PDFInfo
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- CN2077027U CN2077027U CN 89217143 CN89217143U CN2077027U CN 2077027 U CN2077027 U CN 2077027U CN 89217143 CN89217143 CN 89217143 CN 89217143 U CN89217143 U CN 89217143U CN 2077027 U CN2077027 U CN 2077027U
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- circuit
- top board
- sensor
- head plate
- alarm
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Abstract
The utility model relates to a head plate monitoring alarm-treating device in the safe explosion-proof type, which is one of the serial products of an alarming instrument for monitoring the head plate. The utility model is composed of a sensor, a mainframe, an alarm box, a printer, a memorizer, and a battery box. The utility model is suitable for measuring the subsidence and the speed of the underground head plate of the coal mine, and also is used for monitoring the head plate in the cavern engineering of the traffic, the water conservancy and the electric force. The dynamic variation of the head plate with eight measuring points can be concentrically controlled and monitored, and the data and the curve recordation of the dynamic variation can be stored, processed, displayed and printed. The acoustic-optic warning function is provided. The characteristic circuits of the circuit theory are adopted with the integrated circuits. The utility model has the advantages of high precision, high reliability and convenient operation.
Description
The utility model is one of top board monitoring alarm instrument family product, is applicable to coal mine lower roof plate deflection and the speed measured; Also can be used in the cavity engineering of traffic, hydraulic and electric engineering monitoring to top board.
The RM-1 type surrouding rock stress monitor of the present U.S., SAK rock noise monitoring system of Poland and SYOK microseism navigation system etc., these instrument prices are more expensive, are not suitable for the national conditions of China.KY-80 type, the dynamic instrument of KY-82 type top board of the development of domestic Shandong ore deposit institute, the DL-2.5 type measuring staff that fushun coal mine safety instrument factory produces etc., these instruments are not with acoustic-optic alarm in the use of down-hole.
For to down-hole coal excavation, mining and other cavity engineering etc. crush and monitor, and help managing top board, ensure mine and workman's safety in production.
The purpose of this utility model is the top board monitoring alarm treating apparatus that but the top board of 8 measuring points of development safety anti-explosive centralized Control monitoring is dynamic and have warning and data recording and processing function.
The key technical indexes of the present utility model
Measurement category displacement 0-300mm
Speed 0-50mm/S
The measure error displacement is 2%
7 LED numerals of display mode show
The type of alarm sound and light alarm
The alarm range full scale can preset
Sensor output signal 1000HZ-1600HZ
1000 meters of sensor transmissions distances
Sensor way 1～8 tunnel
Power supply mode 7.2V10AH ickel-cadmium cell case
Working time used 72 hours continuously
Explosion-proof form ibI+150 ℃
Complete machine electric current 140mA normally moves
The 450mA display mode
7 kilograms of weight
Environment temperature 0～+ 40 ℃
Structure of the present utility model
Fig. 1 is a top board monitoring alarm treating apparatus block diagram.It is one group by 1(1 to 8 of sensor (measuring staff)), main frame 2(comprise touring detect and calculate), (7.2V 10AH) waits partly and forms for warning box 3, printer 4, memory 5 and battery case.The printer 4 of this treating apparatus uses on ground, and memory 5 is in the upper and lower all uses of well, and sensor 1, main frame 2, warning box 3, battery case are arranged on the down-hole and survey.The down-hole is used partly and is represented with a, and aboveground use is partly represented with b.
Characteristics of the present utility model
Sensor 1, main frame 2, warning box 3, the memory 5 that is arranged on the down-hole carries out multiple spot and monitors on-the-spot top board and dynamically and with the data and the change curve of its observation deposit memory 5 in for analyzing and processing.At any time understand top board for the ease of the field personnel and dynamically be provided with display unit, make it all can directly observe the amount of crushing and subsidence velocity at any time.Take out memories 5 in the main frame 2 insert be arranged on aboveground printer 4 after, can print at 24 hours inside ceiling panel dynamic changing data and curve.She Ji advantage can be saved cable and the equipment that sets up for the transmission data to aboveground control centre from the down-hole like this, and is convenient to install and use.
One, sensor
This sensor mainly partly is made up of mechanical transmission structure, mechanical cover protection structure and translation circuit etc.
Fig. 2 is a top board monitoring alarm treating apparatus sensor mechanical structure.Constitute by potentiometer 6, control panel 7, U-shaped frame 8, press strip 9, spring 10, gear 11, lid 12, sealing mat 13, four-core socket 14, the screw of boring end holding screw 15 and all size, packing ring, bullet pad etc.
In Fig. 2:
Sealing mat 13 is inlaid in and covers in 12 the groove, makes it difficult drop-off in cargo handling process.The lid 12 be connected with sensor box body and function screw fastening after, sealing mat 13 plays protection against the tide, waterproof and dustproof effect.
A spring 10 is housed on the potentiometer 6, presses with press strip 9, spring 10 can normally stretch, unlikely coming off.
Fig. 3 is total assembling structure of top board monitoring alarm treating apparatus sensor.The title of its each component is extension bars 16, the bar 17 of regulate living, master collet 18, Universal-head 19, initiatively manage 20, formations such as spring conductor rod 21, guide rod 22, sleeve pipe 23, spring 24, famous brand 25, joint 26, locking nut 27, chassis nut 28, nut 29, sunk screw 30, half knob copper rivet 31.Universal-head 19 is contained in the top, and the sphere cone structure can adapt to the top board of different angle.The bar 17 of regulate living is packed in the sleeve pipe 23, and locking nut 27 front ends are that scalene cone regulates locking to live bar 17 not come off in sleeve pipe 23.Initiatively manage scale, tooth bar and split ring are housed on 20.Scale is as the mark of observing mechanical displacement.Gears engaged on tooth bar and the potentiometer, and mechanical displacement changed be converted into resistance variations by potentiometer 6.Nut 29 usefulness screws are fastened on the master collet 18, can observe the starting point of scale changing value; Also can limit and initiatively manage 20 and can under the effect of spring force, not eject outside the master collet 18; Can also limit tooth bar and not expose master collet 18 outer ends.Its advantage is avoided being filled out by dust between the tooth of tooth bar and the tooth, prevents the tooth bar clashing and breaking.
The selection of top board monitoring alarm treating apparatus sensor and working condition (Fig. 1, Fig. 3).This sensor 1 links by cable and main frame 2, can connect 8 the tunnel, and promptly as required, sensor can be 1 to 8.Sensor is measured the displacement situation between the top board base plate and through cable signal is delivered to main frame 2 and automatically recording processing is carried out in displacement and velocity of displacement, with 5 li of the data of top board dynamic change and the memory of profile memory in main frame 2.The setting of sensor is according to the height between top, the base plate under the coal mine, selects suitable extension bar 16, and sensor is installed between top, the base plate.When top board takes place, initiatively manage 20 and master collet 18 do relative motion, be fixed on the tooth bar of initiatively managing on 20 and the also relative motion of gears engaged that is fixed on the potentiometer 6 simultaneously, the swing handle that drives potentiometer 6 rotates, and converts the variation of mechanical displacement to potentiometer 6 changes in resistance.The signal of telecommunication is exported from sensor.
Two, main frame
Fig. 4 is a main machine structure.By keyboard display 32, processor 33, casing 34, seat 35, lid 36, panel 37, carrying handle 38, packing ring 39, liner 40, sealing mat 41, hasp 42, on link up with 43, screw that upper and lower half loose-leaf is buckled 44, half knob rivet 45, buzzer 46, attaching plug 47, four-core socket 48, four heart plugs 49, pad pin 50 and all size, nut, packing ring, spring washer etc. constitute.Upper and lower half loose-leaf is buckled 44 usefulness screws and is separately fixed at casing 34 and covers on 36, with half knob rivet 45 casing 34 and lid 36 is connected into and can open and close rotation casing freely.Hasp 42 can locking lip 36, liner 40 and sealing mat 41 can moistureproof, waterproof and dustproofs.This main frame can keep flat or hang and hang use and all can according to underground work environment and place.
Three, printer
Fig. 5 is a top board monitoring alarm treating apparatus printer arrangement.Partly constitute by transformer 51, printed board 52, casing 53, lid 54, side plate 55, printed-board receptacle 56, self-lock switch 57, keyboard 58, indicator lamp 59, heat sink 60 etc.Casing 53, about side plate 55(each one) adopt monomer to open from structural formula.Its advantage simplicity of design, reasonable can be processed difformity according to designing requirement, is convenient to assembly.Two of casing 53, side plate 55() connect the body of fastening formation printer with screw.
Four, warning box
Fig. 6 is a top board monitoring alarm treating apparatus warning box structure.Constitute by casing 61, battery case 62, panel combination 63, liner 64, famous brand 65, eye ring seat 66, handle 67, two core power supplys 68, four-core socket 69, the screw that fills up pin 70 and all size, nut, packing ring, half knob rivet etc.Casing 61 adopts crooked, Stretching die one-shot forming, is convenient to processing.Battery case 62 is injection-compression moldings, to the warning box out-put supply.Panel combination 63 constitutes by adorning moistureproof alarming horn, alarm lamp harmony, optical alarm circuit printed board.Liner 64 plays protection against the tide, waterproof and dustproof effect.
This warning box respectively be seated in the sensor of adopting or digging work plane and be connected with the main frame that is seated in big lane and be connected.Be connected with sensor, a sensor connects a warning box; Be connected with main frame, main frame will connect two warning boxs.
Five, memory
The memory of top board monitoring alarm treating apparatus is in the upper and lower all uses of well.It partly is made of shell and circuit.Shown in 91 among the memory circuitry among Fig. 8 81 and Figure 10.
Six, battery case
The battery case of top board monitoring alarm treating apparatus is by mechanical cover and adopt 12 joint GNY5 ickel-cadmium cell groups and 4 Ω/57W current-limiting resistance to constitute.Use the epoxy resin back cover, become the intrinsically safe battery case, (7.2V 10AH) concentrates to main frame and sensor power supply.
Circuit theory of the present utility model
One, sensor
Top board monitoring alarm treating apparatus sensor circuit principle is shown in dashed rectangle among Fig. 7.It mainly partly is made up of mu balanced circuit 71, displacement voltage change-over circuit 72, voltage frequency conversioning circuit 73, power indicating circuit 74 etc.
In Fig. 7:
1. mu balanced circuit 71 adopts integrated package 7805, and output is stabilized in+5V, does not change with input voltage.C1, C2 are filter capacitor.
2. displacement voltage change-over circuit 72 is by integrated circuit MC1403, and potentiometer W1, W2, W3, resistance R 1 constitute.Integrated circuit MC1403 is the high accuracy source of stable pressure, input 4.5V to 15V, and output 2.5V, error ± 2.5mV is for the displacement voltage change-over circuit provides stability reference voltage preferably.Potentiometer W2 is a kind of slip formula precision linear element, is input as mechanical quantity (anglec of rotation), is output as resistance.W2 has two fixed arm A and B, and a travelling arm C, C arm are fixed on the gear of potentiometer, when displacement changes, the rotation of gear driven C arm, the resistance value of change potentiometer W2, will be corresponding the C arm output voltage of change W2, the variation of displacement is converted to voltage change.The voltage maximum of when C arm and A arm contact, exporting; The voltage minimum of when C arm and B arm contact, exporting.W1, W3, R1 and W2 form bleeder circuit, and W1, W3 are used to adjust the high-end linearity of electric voltage frequency conversion.
3. voltage frequency conversioning circuit 73 is made of integrated circuit 54JN, capacitor C 4, C5, resistance R 2, R3, R4.54JN is the high-accuracy voltage freq converting circuit, and maximum linear is 0.01%, and C5 selects the accurate electric capacity of poly-stupid ethene for use, and R3, C5 can adjust the 54JN output frequency.The R2 effect is step-down, and R4 adjusts resistance.The frequency signal of voltage frequency conversioning circuit output carries out the data processing from 1 pin of CZ1 through the main frame that cable is sent to this treating apparatus.
4. power indicating circuit 74 is made up of LED, resistance R 5.When 4 pin of CZ1 have+during the input of 7.2V voltage, the LED conduction is shinny, the expression supply voltage is normal.
Two, main frame
Top board monitoring alarm treating apparatus host circuit principle is shown in dashed rectangle among Fig. 8.It is made up of buffer circuit 75, multi-way switch circuit 76, shaping circuit 77, one chip microcomputer mini system 78, display driver circuit 79, keyboard-display circuit 80, memory circuitry 81, under-voltage indicating circuit 82, power circuit 83, mu balanced circuit 84, warning circuit 85 etc.
In Fig. 8:
1. buffer circuit 75 adopts the buffer circuit of four 2G03D1B integrated circuits as No. 8 sensors, and four 2G03D1B all respectively contain 2 optically-coupled pipes.The frequency signal of the displacement of sending here when sensor is delivered to the input of each optically-coupled pipe respectively, and corresponding output directly passes the signal to variable connector.
2. multi-way switch circuit 76 adopts the electronic switch mode, selects integrated circuit MC14051 for use, and function is eight tunnel inputs, one tunnel output.The connection of switch, disconnection are controlled with single chip microcomputer 8031, and 9,10,11 pin of integrated package MC14051 are control ends of switch connection and disconnection.This variable connector has advantages such as volume is little, and conversion speed is fast.
3. shaping circuit 77 adopts integrated circuit 7414, includes 6 groups of reversers of being made up of Schmidt circuit.Wherein have 1 group as the input signal shaping, have 4 groups as the control signal paraphase, in addition 1 group standby.
4. single chip microcomputer mini system 78 is core parts of main frame.It is by central processing unit (CPU) CPU(8031), address latch (373), read-only storage (2732), RAM/IO expander (8155) etc. form.Its advantage is integrated degree height, strong anti-interference performance, fast operation etc.The time difference of utilizing timer to produce 0.5 second, the pulse number of the frequency signal of To counter records displacement lx in 0.5 second carries out data with mathematical way and handles, and is reduced into the numerical value of displacement.The design formulas that data are handled is as follows:
DX＝K（fX－f0）
In the formula: DX is a displacement
K is a factor of proportionality
FX is the frequency of the immediate movement amount that obtains
F0 is the frequency of initial displacement amount
V
X＝ (D
X2－D
X1)/(△t )
VX is a velocity of displacement in the formula
Data after central processing unit (CPU) CPU will handle store, and carry a secondary data to memory in per 6 minutes, and displacement is the instantaneous value at 6 minutes ends, and velocity of displacement is the maximum value in 6 minutes.Data after CPU will handle are simultaneously delivered in 8155 the register, demonstrate shift value and velocity of displacement value at display at any time according to keyboard commands.With the switching of P10, P11, P12 control variable connector MC14051, warning box, buzzer that other P13, P14 control warning circuit respectively carried out limit warning and fault alarm in the P1 mouth of CPU, and P15, P16 are used separately as detection, and P17 is standby.
5. display driver circuit 79 adopts two MC1413 integrated circuits, 7 driving tubes is arranged, OC output, maximum drive current 500mA in every.
6. to select model for use be that seven sections LED of 7-BS206 show to the display of keyboard-display circuit 80, every section drive current 4mA, luminous clear, brightness is big.It is 16 key keypads of 86BA2 that the keyboard circuit of keyboard-display circuit 80 is selected model for use, its advantage button good hand touch, reliability height, convenient and flexible installation.Keyboard-display circuit 80 is controlled by integrated circuit 8155 by CPU, and 8155 PA mouth is the font control mouthful of display, and the PB mouth is the word bit control mouthful and the keyboard scan control mouth of display, and the PC mouth is the keyboard commands input ports.
7. memory circuitry 81 adopts two integrated circuits, 8464, two joint GNy0.25 batteries, diode 2CK70D, resistance 100 Ω/compositions such as 250mW.This memory epoxy encapsulation is an one, and is not fragile, safe and reliable.8464 is the 8K memory, deposits parameters such as displacement and velocity of displacement with it.Two joint CNy0.25 batteries play the power-off protector effect.When memory inserted main frame, the 5V power supply charged the battery by diode 2CK70D, and when the main frame power down, 2CK70D ends, and battery is powered to memory circuitry by 100 Ω resistance, did not lose to guarantee data.100 Ω/250mW has been the current-limiting resistance of explosion-proof.
8. compositions such as under-voltage indicating circuit 82 employing LM339 integrated circuits and light emitting diode, voltage-stabiliser tube, potentiometer, resistance.Light emitting diode is bright when supply voltage is lower than 6.4V, represents under-voltage.
9. power circuit 83 adopts 12 joint GNY5 ickel-cadmium cells, and constitute the battery case of 7.2V, 10AH, and be added with 4 Ω/57W current-limiting resistance, be one with epoxy encapsulation, become essential safe type, can use 72 hours.
10. mu balanced circuit 84 adopts integrated package 4805, is characterized in that pressure reduction is low.Low in energy consumption.Good stability.Behind line under-voltage, input is higher than 5.6V, and output still can be stabilized in 5V.Output end of voltage stabilizer adds the filter capacitor of one 1 μ F.
11. warning circuit 85 adopts integrated circuit MC1413, buzzer, compositions such as relay.When central processing unit (CPU) CPV sends alarm signal, 15,16 pin of MC1413 while output low level, intermittently alarm song is sent in the buzzer conducting, relay conducting simultaneously, the changeover contact adhesive starts warning box work, sends continuous sound, light warning.
Three, warning box
Top board monitoring alarm treating apparatus warning box circuit theory is shown in dashed rectangle among Fig. 9.It mainly is made up of power circuit 86, optical alarm circuit 87, sound alarm circuit 88 etc.
In Fig. 9:
1. power circuit 86 is made of 8 joint GNY1 ickel-cadmium cells and filter capacitor C1, diode D.Explosion-proof resistance 2.5 Ω/24W epoxy encapsulation of string is an one in per 4 batteries, forms 4.8V, 1AH intrinsically safe battery group.The terminal voltage 9.6V of two Battery packs, sound and light alarm is 2 hours continuously.Conducting during diode D charging ends during work.If desired far distance controlled just report to the police be seated in big lane in main frame be connected, when alarm signal, the host computer control end makes 2 connections of A among Fig. 9, B, warning box sends the sound and light alarm signal.If be seated in the sensor of adopting or digging work plane and be connected, sensor can be controlled in the warning box circuit A, B point (Fig. 9) and connect, warning box sends sound and light signal.
2. optical alarm circuit 87 is by resistance R 1, R2, R3, R4, capacitor C 2, and integrated circuit JC1, model is compositions such as NE555, triode BG1, BG2, alarm lamp BD1, BD2.Integrated circuit NE555 and resistance R 1, R2, capacitor C 2 is formed multivibrator, by the 3 pin output square-wave signal of NE555, controls connection, the disconnection of the clad pipe of being made up of BG1 and BG2.Drive alarm lamp BD1, BD2 and send visual alarm.When 3 pin of NE555 were exported high level, BG1, BG2 conducting made alarm lamp BD1, BD2 shinny.When the 3 pin output low levels of NE555, BG1, BG2 end, and BD1, BD2 extinguish, and optical alarm circuit sends and dodges the signal of melting like this, and expression is reported to the police.
3. sound alarm circuit 88 is by integrated package JC2, resistance R 5, R6, R7, R8, and triode BG3, BG4, loudspeaker, capacitor C 3 is formed.JC2 adopts KD9561 sound sheet, can send four kinds of different audible signals.When 2 of A, B connect, the KD9561 power connection, the O/P end output audible signal of JC2 is sent audible alarm by loudspeaker after the clad pipe that BG3, BG4 form amplifies.R5 is the explosion-proof resistance of loudspeaker, adds the alternating current path that electric capacity C3 promptly becomes audible signal for chimes of doom is weakened.R5, C3 epoxy encapsulation are one.
Four, printer
Top board monitoring alarm treating apparatus printer circuitry principle is shown in Figure 10 dashed rectangle.It mainly partly is made up of power circuit 89, control circuit 90, memory circuitry 91, print circuit 92 etc.
In Figure 10:
1. power circuit 89 is by transformer, 4 commutation diode 1N5400, integrated package 7809,7805 each three, resistance R 22, formations such as diode display LED.Transformer is input as alternating current 220V, and output AC 12V forms bridge rectifier by 4 commutation diode 1N5400, output 10.8V DC voltage.The mu balanced circuit of power circuit 89 adopts the two poles of the earth voltage stabilizing output, can improve the stability of output voltage.The first order and second level mu balanced circuit all respectively adopt three 7809(first order) and the 7805(second level) the in parallel use, big electric current can be provided.First order output voltage stabilization is at 9V; Second level mu balanced circuit output voltage stabilization is at 5V.Resistance R 22 and diode display are formed power indicating circuit.
2. control circuit 90 is 2732 by integrated circuit JC1 model, and the JC2 model is 74373, and the JC4 model is 8031, and the JC3 model is 7402,6MHZ crystal, capacitor C 7, C8, compositions such as keyboard.Form the one chip microcomputer mini system by 2732,74373,8031 again.2732 is program storage, and 8031 working programme is stored in 2732, and the 6MHZ crystal is 8031 operating frequencies that 6MHZ is provided.Capacitor C 7, C8 and integrated package 1/4 JC3 form reset circuit.8031 reset signal is a high level, C8 provides power-on reset signal for 8031, C7 provides the button reset signal for 8031, simultaneously be reversed integrated circuit 8039 the low level reset signal is provided through 1/4 JC3, P10 to P13 in the 8031P1 mouth is the keyboard scan delivery outlet, the output keyboard scanning signal, P14 to P17 is the keyboard scanning signal input port, whether detect key during for keyboard input signal presses, when certain key is pressed, 8031 identify the function of button, will carry out the correspondent button functional programs.The gating of 8301 P27 mouth control print circuit.When needs gating printer, P27 is changed to 1 gets final product.P30 detects the print circuit working condition, when print circuit is printed, send a high level signal, the expression printer is being printed data, 8301 P30 detects this signal and just raises and treat, becomes low level up to P30 and send data to print circuit again.P25, P26 are the gating control of data storage I, II, and control signal is represented gating during for I.
3. the composition of memory circuitry 91 is identical with the memory circuitry 81 of top board monitoring alarm treating apparatus main frame.
4. print circuit 92 is to select the intelligent miniature printer for use, can be directly links with the i/O mouth of the one chip microcomputer that adopts, and also can link by interface board and computer bus.This printer has 11 holding wires and control circuit to link, and 8 data lines are arranged, and the data that control circuit will be printed by data wire are delivered to print circuit.STB is a data useful signal line, and high level is effective.When this signal is high level, the data on the printer input data line.BUSY is the busy signal line, printer output letter electricity, and when this signal was in high level, the expression printer just had been busy with handling data, and at this moment control circuit must not use the STB holding wire to send into new data to printer.RESET is a reset line, and low level is effective, makes printer be in the original state that powers on, and prints to await orders behind the self check symbol or sky is walked to await orders.
The characteristics circuit of the utility model circuit theory all adopts integrated circuit, and doing control centre with one chip microcomputer can show and print at random automatically with top board dynamic changing data and curve record storage.Power supply mode adopts 7.2V, and the battery case of 10AH is concentrated to main frame and sensor power supply.Have advantages such as measuring point is many, precision is high, easy to operate, reliable.
Claims (4)
1, the utility model is a kind of top board monitoring alarm treating apparatus, is made up of sensor, main frame, warning box, printer, memory, battery case etc.It is characterized in that sensor circuit partly is made of mu balanced circuit, displacement voltage change-over circuit, voltage frequency conversioning circuit, power indicating circuit.Host circuit partly is made up of buffer circuit, multi-way switch circuit, shaping circuit, one chip microcomputer mini system, display driver circuit, keyboard-display circuit, memory circuitry, under-voltage indicating circuit, power circuit, mu balanced circuit, warning circuit etc.The warning box circuit partly is made of power circuit, optical alarm circuit, sound alarm circuit.Printer circuitry partly is made up of power circuit, control circuit, memory circuitry, print circuit.
2, a kind of top board monitoring alarm treating apparatus according to claim 1 is characterized in that sensor is made of potentiometer, control panel, U-shaped frame, press strip, spring, gear, lid, sealing mat, four-core socket, awl end holding screw etc.Spring is contained on the potentiometer.
3, a kind of top board monitoring alarm treating apparatus according to claim 1 is characterized in that the battery case that power supply mode adopts ickel-cadmium cell and current-limiting resistance to constitute with epoxy encapsulation.
4, a kind of top board monitoring alarm treating apparatus according to claim 1 is characterized in that memory circuitry adopts formations such as integrated circuit, battery, diode, resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89217143 CN2077027U (en) | 1989-09-19 | 1989-09-19 | Head plate monitoring alarm treating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89217143 CN2077027U (en) | 1989-09-19 | 1989-09-19 | Head plate monitoring alarm treating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2077027U true CN2077027U (en) | 1991-05-15 |
Family
ID=4872450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89217143 Withdrawn CN2077027U (en) | 1989-09-19 | 1989-09-19 | Head plate monitoring alarm treating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2077027U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1907668A1 (en) * | 2005-07-15 | 2008-04-09 | Commonwealth Scientific and Industrial Researchorganization | Method and apparatus for monitoring gateroad structural change |
| CN102183322A (en) * | 2011-01-14 | 2011-09-14 | 深圳思量微系统有限公司 | A method for detecting coal mine roof stress in real time and predetermining roof caving |
| CN102913285A (en) * | 2012-11-02 | 2013-02-06 | 中国科学院自动化研究所 | Mine roof hazard warning method |
| CN103061813A (en) * | 2013-01-09 | 2013-04-24 | 山东理工大学 | Ultrasonic multipoint real-time monitoring method for mine surrounding rock top plate disasters |
| CN110057331A (en) * | 2019-04-26 | 2019-07-26 | 中国科学院武汉岩土力学研究所 | A kind of tunnel roadway surrounding rock surface and deep soils integrated apparatus and method |
-
1989
- 1989-09-19 CN CN 89217143 patent/CN2077027U/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1907668A1 (en) * | 2005-07-15 | 2008-04-09 | Commonwealth Scientific and Industrial Researchorganization | Method and apparatus for monitoring gateroad structural change |
| EP1907668A4 (en) * | 2005-07-15 | 2015-02-18 | Commw Scient Ind Res Org | Method and apparatus for monitoring gateroad structural change |
| CN102183322A (en) * | 2011-01-14 | 2011-09-14 | 深圳思量微系统有限公司 | A method for detecting coal mine roof stress in real time and predetermining roof caving |
| CN102913285A (en) * | 2012-11-02 | 2013-02-06 | 中国科学院自动化研究所 | Mine roof hazard warning method |
| CN103061813A (en) * | 2013-01-09 | 2013-04-24 | 山东理工大学 | Ultrasonic multipoint real-time monitoring method for mine surrounding rock top plate disasters |
| CN103061813B (en) * | 2013-01-09 | 2014-09-17 | 山东理工大学 | Ultrasonic multipoint real-time monitoring method for mine surrounding rock top plate disasters |
| CN110057331A (en) * | 2019-04-26 | 2019-07-26 | 中国科学院武汉岩土力学研究所 | A kind of tunnel roadway surrounding rock surface and deep soils integrated apparatus and method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
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