CN203587268U - Force measuring device of anchor pole - Google Patents
Force measuring device of anchor pole Download PDFInfo
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- CN203587268U CN203587268U CN201320746795.1U CN201320746795U CN203587268U CN 203587268 U CN203587268 U CN 203587268U CN 201320746795 U CN201320746795 U CN 201320746795U CN 203587268 U CN203587268 U CN 203587268U
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- anchor rod
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- 238000005259 measurement Methods 0.000 claims abstract description 30
- 230000003321 amplification Effects 0.000 claims description 15
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 15
- 239000004973 liquid crystal related substance Substances 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 description 9
- 239000003990 capacitor Substances 0.000 description 5
- 238000004891 communication Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a force measuring device of an anchor pole. The force measuring device comprises a torque measurement body, a strain acquisition circuit, a master control chip and a wireless transceiver, wherein the torque measurement body is connected with the strain acquisition circuit, the strain acquisition circuit is electrically connected with the input end of the master control chip, and the output end of the master control chip is electrically connected with the wireless transceiver. Due to employment of the wireless transceiver, the force measuring device is wirelessly communicated with a host computer or other equipment, thereby greatly reducing the wiring complexity, and providing equipment stability.
Description
Technical field
The utility model relates to mine roadway support monitoring correlative technology field, particularly a kind of anchor rod force-measuring device.
Background technology
The analysis of roadway bolt stressing conditions is the important content of roadway support monitoring.Dynamic observation rockbolt stress state presses Changing Pattern, guarantee mine safety production etc. to be significant for checking supporting effect of roadway, monitoring ore deposit.At present, utilize different principle to develop some anchor rod force-measuring instruments both at home and abroad.Although these instruments have solved to a certain extent colliery scene ore deposit and have pressed the problem of monitoring, but ubiquity is expensive, measuring accuracy is low, poor anti jamming capability, installation and maintenance inconvenience, dirigibility and the deficiency such as extendability is poor, is limiting its further developing in field, colliery.Along with the progress of technology, the various colliery pressure monitoring sensors based on cable network occur in succession, but wired network system exists following obviously deficiency: wire communication mode wiring is complicated, and labour intensity is large, installation and maintenance inconvenience, and maintenance cost is high.Network structure is dumb, and the dynamic change that is not suitable for the advance of the face requires, extendability is poor.Monitoring point is relatively fixing, easily occurs monitoring blind area.
Utility model content
Based on this, be necessary the anchor rod force-measuring device communication wiring complexity for prior art, the technical matters of installation and maintenance inconvenience, provides a kind of anchor rod force-measuring device.
A kind of anchor rod force-measuring device, comprise: torque measurement body, strain acquirement circuit, main control chip and wireless transceiver, described torque measurement body is connected with strain acquirement circuit, described strain acquirement circuit is electrically connected with the input end of described main control chip, and the output terminal of described main control chip is electrically connected with described wireless transceiver.
Further, described wireless transceiver is Zigbee wireless transceiver.
Further, described strain acquirement circuit comprises: at least one is close to the strain ga(u)ge of described torque measurement body, and described strain ga(u)ge one end is electrically connected with reference power source, and the other end is electrically connected with the input end of described main control chip.
Further, described strain acquirement circuit is electrically connected with the input end of described main control chip by signal amplification circuit.
Further, described strain acquirement circuit is bridge-type strain acquirement circuit, comprise four strain ga(u)ges that adopt bridge architecture to connect, and stabilized voltage supply, and each strain ga(u)ge is close to described torque measurement body, the power end of described bridge architecture is electrically connected with described stabilized voltage supply, the earth terminal ground connection of described bridge architecture, two output terminals of described bridge architecture are two output terminals of described bridge-type strain acquirement circuit, are electrically connected with described signal amplification circuit.
Further, described signal amplification circuit is differential amplifier circuit, and two output terminals of described bridge-type strain acquirement circuit are electrically connected with two input ends of described differential amplifier circuit.
Further, also comprise the liquid crystal display circuit, key circuit and the memory circuit that are electrically connected with described main control chip.
Further, described torque measurement body is moment of torsion flange.
The utility model by torque measurement body by the stressed adaptability to changes that is converted to of anchor pole, and by strain acquirement circuit, adaptability to changes is converted to corresponding electric signal and outputs to main control chip, main control chip sends to host computer or other equipment by wireless transceiver by the rockbolt stress size of analytical calculation.Owing to having adopted wireless transceiver, therefore adopt radio communication with host computer or other equipment, greatly reduced the complexity of wiring, the stability of equipment is also provided simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of anchor rod force-measuring device of the utility model;
Fig. 2 is the circuit diagram of an example of the utility model strain acquirement circuit and signal amplification circuit;
Fig. 3 is the scheme of installation of a kind of anchor rod force-measuring device of the utility model;
Figure 4 shows that the survey station arrangenent diagram of a kind of anchor rod force-measuring device of the utility model;
Figure 5 shows that the structural representation of an example of a kind of anchor rod force-measuring device of the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Be illustrated in figure 1 the structural representation of a kind of anchor rod force-measuring device of the utility model, comprise: torque measurement body 11, strain acquirement circuit 12, main control chip 13 and wireless transceiver 14, described torque measurement body 11 is connected with strain acquirement circuit 12, described strain acquirement circuit 12 is electrically connected with the input end of described main control chip 13, and the output terminal of described main control chip 13 is electrically connected with described wireless transceiver 14.
The anchor rod force-measuring device of the present embodiment is mainly used in working environment at coal mines, because working environment at coal mines is very complicated and changeable, if adopt wired wiring, wiring is complicated on the one hand, likely because down-hole geologic media changes, causes the situations such as broken string on the other hand, causes ground cannot understand down-hole situation, and adopted wireless transceiver,, without considering wiring problem, also can avoid well because geologic media changes the situation that causes broken string, improve widely the stability of rockbolt stress monitoring.
In an embodiment, described wireless transceiver 14 is Zigbee wireless transceiver therein.Zigbee is the low-power consumption territory fidonetFido based on IEEE802.15.4 standard.According to the technology of this agreement regulation, it is the wireless communication technology of a kind of short distance, low-power consumption.
In an embodiment, described strain acquirement circuit 12 comprises: at least one is close to the strain ga(u)ge of described torque measurement body therein, and described strain ga(u)ge one end is electrically connected with reference power source, and the other end is electrically connected with the input end of described main control chip.Strain ga(u)ge is close to torque measurement body, can measure accurately the adaptability to changes of torque measurement body, thereby the variation of adaptability to changes is converted to the variation of resistance, by reference to the conversion of power supply, exports corresponding electric signal.
In an embodiment, described strain acquirement circuit is electrically connected with the input end of described main control chip by signal amplification circuit therein.The electric signal of strain acquirement circuit output is less, adopts signal amplification circuit, the electric signal of strain acquirement circuit output is amplified, to facilitate the collection of main control chip.
Therein in an embodiment, described strain acquirement circuit is bridge-type strain acquirement circuit, comprise four strain ga(u)ges that adopt bridge architecture to connect, and stabilized voltage supply, and each strain ga(u)ge is close to described torque measurement body, the power end of described bridge architecture is electrically connected with described stabilized voltage supply, the earth terminal ground connection of described bridge architecture, two output terminals of described bridge architecture are two output terminals of described bridge-type strain acquirement circuit, are electrically connected with described signal amplification circuit.
In an embodiment, described signal amplification circuit is differential amplifier circuit therein, and two output terminals of described bridge-type strain acquirement circuit are electrically connected with two input ends of described differential amplifier circuit.
Be illustrated in figure 2 the circuit diagram of an example of the utility model strain acquirement circuit and signal amplification circuit, strain ga(u)ge R1, R2, R3 and R4 have formed the bridge-type strain acquirement circuit 21 of bridge architecture, wherein 212 ends of bridge architecture are that power end is connected with the stabilized voltage supply REF of 2.5V, 214 ends are earth terminal ground connection, 211 and 213 ends are two output terminal output difference sub-signals, and are electrically connected with two input ends 221 and 222 of signal amplification circuit 22.
In an embodiment, also comprise the liquid crystal display circuit, key circuit and the memory circuit that are electrically connected with described main control chip therein.The present embodiment increases liquid crystal display circuit, key circuit and memory circuit, is connected respectively, to complete the functions such as transducer calibration and measurement parameter demonstration with liquid crystal display, button and EEPROM storage
In an embodiment, described torque measurement body is moment of torsion flange therein.Adopt moment of torsion flange to coordinate with the securing member of anchor pole better.
Be illustrated in figure 5 an example of a kind of anchor rod force-measuring device of the utility model, comprise torque measurement body 51, signal deteching circuit 52,, EEPROM memory circuit 53, RS232 telecommunication circuit 54, single-chip microcomputer 55, liquid crystal display circuit 56, key circuit 57, feed circuit 58, ZigBee wireless transceiver 59 form.Single-chip microcomputer 55 is selected STC12C5A chip, realizes the functions such as keyboard reads in, LCD shows, rockbolt stress detects, the control of wireless transceiver CC2420.The detection of rockbolt stress state utilizes signal deteching circuit 52 and torque measurement body 51 to coordinate corresponding amplifying circuit to realize.Signal deteching circuit 52 and torque measurement body 51 are converted to 0～5V voltage signal by rockbolt stress situation, for single-chip microcomputer 55, sample.Single-chip microcomputer 55 is according to the magnitude of voltage of sampling, analytical calculation rockbolt stress size.This anchor rod force-measuring device has that accuracy of detection is high, stable and reliable for performance, compact conformation, water proof and dust proof, the advantage such as easy to use.ZigBee wireless transceiver 59 adopts the CC2420 design of Chipcon company.In addition, this anchor rod force-measuring device is also designed with liquid crystal display circuit 56, key circuit 57, EEPROM memory circuit 53, RS232 telecommunication circuit 54, for completing the functions such as transducer calibration, measurement parameter demonstration and communication.
In this example, rockbolt stress detects by signal deteching circuit and torque measurement body and coordinates corresponding amplifying circuit to realize, and circuit theory as shown in Figure 2.The bridge-type strain acquirement circuit 21 that the core of signal deteching circuit is comprised of four strain ga(u)ge R1～R4.In order to reduce the power consumption of bridge-type strain acquirement circuit 21, should select the strain ga(u)ge of large resistance as far as possible, this example has adopted the foil resistance strain gauge of 350 ohm.Bridge is pressed by accurate stabilized voltage supply REF(model: 2925) provide, its size is 2.5V.Bridge-type strain acquirement circuit 21 has as shown in Figure 2 been realized the conversion of dependent variable ε to voltage signal Δ U.Because the differential output signal Δ U of bridge-type strain acquirement circuit 21 is fainter, inconvenient directly measurement, so designed model: the AD620 based on operational amplifier U8() amplification Circuit tuning, signal is amplified to suitable size delta U1, then sends into single-chip microcomputer and carry out sampling processing.The operational amplifier A D620 design of this circuit based on full-bridge strain acquirement circuit and high precision, low drift, circuit has not only been eliminated temperature drift and the nonlinearity erron of strain ga(u)ge, can also obtain higher sensitivity and precision.
Utilize this sensor can form easily various roadway bolt stressing conditions automatic monitoring systems.
Be illustrated in figure 3 the scheme of installation of a kind of anchor rod force-measuring device of the utility model.Wherein, anchor pole 36 inserts in tunnel boring 35, and fastening by anchor dish 33 and clamp nut 34, the torque measurement body 31 of anchor rod force-measuring device of the present utility model is arranged between anchor dish 33 and clamp nut 34, and is closely connected with clamp nut 34 with anchor dish 33 by cardo ring 32.Strain ga(u)ge is close to torque measurement body 31, and torque measurement body 31 is the stressed adaptability to changes that is converted to of anchor pole 36, and by strain ga(u)ge, adaptability to changes is converted to corresponding electric signal and outputs to main control chip.
Be illustrated in figure 4 the survey station arrangenent diagram of a kind of anchor rod force-measuring device of the utility model.Anchor rod force-measuring device 41 is separately positioned on to the end of the anchor pole 421,422 of lane, both sides side 431,432, meanwhile, in the end of the deep of back 433 basic point anchor pole 423 and superficial part basic point anchor pole 424.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (8)
1. an anchor rod force-measuring device, it is characterized in that, comprise: torque measurement body, strain acquirement circuit, main control chip and wireless transceiver, described torque measurement body is connected with strain acquirement circuit, described strain acquirement circuit is electrically connected with the input end of described main control chip, and the output terminal of described main control chip is electrically connected with described wireless transceiver.
2. anchor rod force-measuring device according to claim 1, is characterized in that, described wireless transceiver is Zigbee wireless transceiver.
3. anchor rod force-measuring device according to claim 1, it is characterized in that, described strain acquirement circuit comprises: at least one is close to the strain ga(u)ge of described torque measurement body, and described strain ga(u)ge one end is electrically connected with reference power source, and the other end is electrically connected with the input end of described main control chip.
4. anchor rod force-measuring device according to claim 1, is characterized in that, described strain acquirement circuit is electrically connected with the input end of described main control chip by signal amplification circuit.
5. anchor rod force-measuring device according to claim 4, it is characterized in that, described strain acquirement circuit is bridge-type strain acquirement circuit, comprise four strain ga(u)ges that adopt bridge architecture to connect, and stabilized voltage supply, and each strain ga(u)ge is close to described torque measurement body, the power end of described bridge architecture is electrically connected with described stabilized voltage supply, the earth terminal ground connection of described bridge architecture, two output terminals of described bridge architecture are two output terminals of described bridge-type strain acquirement circuit, are electrically connected with described signal amplification circuit.
6. anchor rod force-measuring device according to claim 5, is characterized in that, described signal amplification circuit is differential amplifier circuit, and two output terminals of described bridge-type strain acquirement circuit are electrically connected with two input ends of described differential amplifier circuit.
7. anchor rod force-measuring device according to claim 1, is characterized in that, also comprises the liquid crystal display circuit, key circuit and the memory circuit that are electrically connected with described main control chip.
8. anchor rod force-measuring device according to claim 1, is characterized in that, described torque measurement body is moment of torsion flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320746795.1U CN203587268U (en) | 2013-11-22 | 2013-11-22 | Force measuring device of anchor pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320746795.1U CN203587268U (en) | 2013-11-22 | 2013-11-22 | Force measuring device of anchor pole |
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| Publication Number | Publication Date |
|---|---|
| CN203587268U true CN203587268U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320746795.1U Expired - Lifetime CN203587268U (en) | 2013-11-22 | 2013-11-22 | Force measuring device of anchor pole |
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| CN (1) | CN203587268U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928650A (en) * | 2016-04-22 | 2016-09-07 | 华北水利水电大学 | Method for measuring expansion pressure of anchor head of expansion-shell type anchor bolt indoors |
| CN105928651A (en) * | 2016-04-22 | 2016-09-07 | 华北水利水电大学 | Experimental method for testing transformation relationship between pretightening torque and pretightening force of anchor bolt |
-
2013
- 2013-11-22 CN CN201320746795.1U patent/CN203587268U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928650A (en) * | 2016-04-22 | 2016-09-07 | 华北水利水电大学 | Method for measuring expansion pressure of anchor head of expansion-shell type anchor bolt indoors |
| CN105928651A (en) * | 2016-04-22 | 2016-09-07 | 华北水利水电大学 | Experimental method for testing transformation relationship between pretightening torque and pretightening force of anchor bolt |
| CN105928650B (en) * | 2016-04-22 | 2018-09-18 | 华北水利水电大学 | The method of the indoor test expansion sleeve bolt anchor head bulbs of pressure |
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| C14 | Grant of patent or utility model | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20140507 |
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| CX01 | Expiry of patent term |