CN202133676U - A mine fan speed measuring device - Google Patents
A mine fan speed measuring device Download PDFInfo
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- CN202133676U CN202133676U CN201120239812U CN201120239812U CN202133676U CN 202133676 U CN202133676 U CN 202133676U CN 201120239812 U CN201120239812 U CN 201120239812U CN 201120239812 U CN201120239812 U CN 201120239812U CN 202133676 U CN202133676 U CN 202133676U
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- 238000007493 shaping process Methods 0.000 claims abstract description 17
- 238000002955 isolation Methods 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 241000883990 Flabellum Species 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 101150036652 GAPB gene Proteins 0.000 claims description 2
- 241000237509 Patinopecten sp. Species 0.000 claims description 2
- 101100122582 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) GPB1 gene Proteins 0.000 claims description 2
- 101100175004 Schizosaccharomyces pombe (strain 972 / ATCC 24843) git5 gene Proteins 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims description 2
- 235000020637 scallop Nutrition 0.000 claims description 2
- 238000005070 sampling Methods 0.000 abstract description 6
- 238000009423 ventilation Methods 0.000 abstract description 6
- 230000009466 transformation Effects 0.000 abstract description 2
- 239000003245 coal Substances 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
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Abstract
本实用新型公开了一种矿井风机转速测量装置，用以解决煤矿通风系统中多路转速测量时控制器采样和计数功能不足的问题。该测量装置的反光板固定在电动机与扇叶之间的连接轴上；光电传感器的接收端和发射端正对着反光板，安装在离反光板边缘10～35mm处，并距反光板平面8～15mm；光电传感器的接收端的VC管脚与隔离整形电路中第三电阻(R3)的一端连接；隔离整形电路中的第一运算放大器的输出端与频率电压转换模块LM2917的1管脚连接；频率电压转换模块LM2917的4管脚与采样端口拓展电路中模拟开关CD4052的0x输入管脚连接。并能利用控制器单路A/D采样端口实现对多路风机转速信息的采集，弥补了控制器采样和计数功能的不足，在现有设备基础上易于实现技术改造。
The utility model discloses a mine blower speed measuring device, which is used to solve the problem of insufficient sampling and counting functions of a controller during multi-channel speed measurement in a coal mine ventilation system. The reflector of the measuring device is fixed on the connecting shaft between the motor and the fan blade; the receiving end and the transmitting end of the photoelectric sensor are facing the reflector, installed at a distance of 10-35mm from the edge of the reflector, and 8-8mm away from the plane of the reflector. 15mm; the VC pin of the receiving end of the photoelectric sensor is connected to one end of the third resistor (R3) in the isolation shaping circuit; the output end of the first operational amplifier in the isolation shaping circuit is connected to the 1 pin of the frequency voltage conversion module LM2917; the frequency Pin 4 of the voltage conversion module LM2917 is connected to the 0x input pin of the analog switch CD4052 in the sampling port expansion circuit. And it can use the single-channel A/D sampling port of the controller to realize the collection of multi-channel fan speed information, which makes up for the lack of sampling and counting functions of the controller, and is easy to implement technical transformation on the basis of existing equipment.
Description
Technical field
The utility model relates to a kind of collection, processing and recognition device of rotation speed of fan signal, is applicable to that the rotation speed of fan of mine ventilation system is measured.
Background technology
Mine ventilation is the important behave that improves mining firm's production efficiency, ensures miner's life security, and to one of wherein the most key just technology of the measurement of rotation speed of fan.The conventional fan instrument such as the specialty of utilizing scrambler that tests the speed is the square-wave signal of a certain frequency with the rotation speed of fan information translation more, through modes such as frequency division counters these signals is carried out frequency measurement then.Though this metering system precision is high, be difficult for installing, cause infringement easily to fan shaft.And for the controller that does not have the external counting function, frequency measurement circuit is expanded difficulty, and it is many to take resource, is difficult for realizing the mensuration to the multichannel rotary speed information.
The utility model content
The utility model provides a kind of mine fan rotation-speed measuring device that is used for mine ventilation system, and the problem of controller sampling and tally function deficiency reduces the infringement to fan shaft simultaneously when solving multichannel tachometric survey in the coalmine ventilation system.
The utility model solves the technical scheme of its technical matters:
A kind of mine fan rotation-speed measuring device, this rotation speed of fan measurement mechanism comprise reflector, photoelectric sensor circuit, isolation shaping circuit, frequency-voltage conversion circuit, sample port expansion circuit.
Reflector is fixed on the coupling shaft between motor and the flabellum; The receiving end and the transmitting terminal of photoelectric sensor face reflector, be installed in from 10～35mm place, reflector edge, and apart from the reflector plane 8～15mm.
The VC pin of the receiving end of photoelectric sensor is connected with an end of the 3rd resistance in the isolation shaping circuit; The output terminal of isolating first operational amplifier in the shaping circuit is connected with 1 pin of voltage to frequency modular converter LM2917.
4 pins of voltage to frequency modular converter LM2917 are connected with the 0x input pin that sample port is expanded analog switch CD4052 in the circuit.
The utility model is compared the beneficial effect that is had with prior art:
This device utilizes common electric transducer to combine to test the speed to use reflector, is frequency signal with the rotation speed of fan information translation; Through Signal Spacing shaping circuit, frequency-voltage conversion circuit, frequency signal is transformed to the voltage signal of being convenient to controller S3C2440 identification then; This voltage signal is expanded circuit through sample port and is delivered to controller the most at last, and via controller can obtain rotating speed of target information after handling and discerning.
This installs simplicity of design, and is easy to use.To convert measurement to the measurement of frequency signal into to voltage signal; And can utilize controller single channel A/D sample port to realize collection to multichannel rotation speed of fan information; Remedy the deficiency of controller sampling and tally function, on the existing equipment basis, be easy to realize technological transformation.
Description of drawings
Fig. 1 mine fan rotation-speed measuring device theory diagram.
Fig. 2 reflector synoptic diagram.
Fig. 3 photoelectric sensor schematic diagram
Fig. 4 isolates shaping circuit
Fig. 5 frequency-voltage conversion circuit
Fig. 6 sample port is expanded circuit
Embodiment
In conjunction with accompanying drawing this utility model is described further.
A kind of mine fan rotation-speed measuring device, this rotation speed of fan measurement mechanism comprise reflector, photoelectric sensor circuit, isolation shaping circuit, frequency-voltage conversion circuit, sample port expansion circuit.
Reflector is fixed on the coupling shaft between motor and the flabellum; The receiving end and the transmitting terminal of photoelectric sensor face reflector, be installed in from 10～35mm place, reflector edge, and apart from the reflector plane 8～15mm.
The VC pin of the receiving end of photoelectric sensor is connected with an end of the 3rd resistance R 3 in the isolation shaping circuit; The output terminal of isolating first operational amplifier in the shaping circuit is connected with 1 pin of voltage to frequency modular converter LM2917.
4 pins of voltage to frequency modular converter LM2917 are connected with the 0x input pin that sample port is expanded analog switch CD4052 in the circuit.
What described reflector adopted is the circular slab of diameter 200mm; A circular port is established at the reflector center, and the aperture is identical with the blower fan shaft diameter; The diameter of reflector is that 10 scallop holes of cloth are reflective grid b as printing opacity grid a between any two printing opacity grid on the ring surface of 100～200mm, and is as shown in Figure 2.。
Described photoelectric sensor circuit comprises: photoelectric sensor, first resistance R 1, second resistance R 2; Connection between the described device:
The VD+ pin of the transmitting terminal of described photoelectric sensor meets the first positive source VCC through first resistance R 1; The VD-pin of the transmitting terminal of photoelectric sensor directly meets the first power cathode GND; The VC pin of the receiving end of photoelectric sensor meets the first positive source VCC through second resistance R 2; The VE pin of the receiving end of photoelectric sensor directly meets the first power cathode GND, and is as shown in Figure 3.The VC pin output Fa signal of the receiving end of photoelectric sensor.
Described isolation shaping circuit is as shown in Figure 4, and it comprises: first operational amplifier, optocoupler, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6; Connection between the described device:
The LED+ pin of optocoupler connects an end of the 3rd resistance R 3 in the described isolation shaping circuit, and the LED-pin meets the first power cathode GND; The CC pin of optocoupler links to each other with the inverting input of first operational amplifier, also is connected to the anodal VDD of second source through the 4th resistance R 4 simultaneously; The EE pin of optocoupler is directly linked second source negative pole DGND; The in-phase input end one tunnel of first operational amplifier is received the anodal VDD of second source through the 5th resistance R 5, and another Lu Jingdi six resistance R 6 are received second source negative pole DGND.First operational amplifier output Fb signal.
Described frequency-voltage conversion circuit, as shown in Figure 5, it comprises voltage to frequency modular converter LM2917, first capacitor C 1, second capacitor C 2, the 7th resistance R 7, the 8th resistance R 8, the 9th resistance R 9; Connection between the described device:
2 pins of described voltage to frequency modular converter LM2917 are received second source negative pole DGND through first capacitor C 1; Parallelly connected second capacitor C 2 and the 8th resistance R 8 between 3 pins of voltage to frequency modular converter LM2917 and the second source negative pole DGND; 4 pins of voltage to frequency modular converter LM2917 are connected to 7 pins of voltage to frequency modular converter LM2917, and meet second source negative pole DGND through the 9th resistance R 9; 6 pins of voltage to frequency modular converter LM2917 meet the anodal VDD of second source through the 7th resistance R 7; 5 pins of voltage to frequency modular converter LM2917 have directly been linked the anodal VDD of second source; 8 pins of voltage to frequency modular converter LM2917 are linked second source negative pole DGND.The 4 pins output VFx signal of voltage to frequency modular converter LM2917.
Described sample port is expanded circuit and is comprised: analog switch CD4052, controller S3C2440, the tenth resistance R 10, stabilivolt D1, the second operational amplifier LM358; Connection between the described device:
First choosing end A of analog switch CD4052 is connected with the GPB0 pin of controller S3C2440 in the described sample port expansion circuit; Second choosing end B of analog switch CD4052 is connected with the GPB1 pin of controller S3C2440; The output terminal X of analog switch CD4052 is connected with the in-phase input end of second operational amplifier through the tenth resistance R 10; The in-phase input end of second operational amplifier connects the negative pole of stabilivolt D1, and the positive pole of stabilivolt D1 meets second source negative pole DGND; The output end vo 2 of second operational amplifier connects the inverting input of second operational amplifier and the AIN0 pin of controller S3C2440; The VH pin of controller S3C2440 meets the anodal VDD of second source, and the VL pin of controller S3C2440 meets second source negative pole DGND.
Each part mentioned above and connection thereof are meant a mine fan rotation-speed measuring device.
The coalmine ventilation system will monitor the rotating speed of many group blower fans simultaneously; In order to reduce taking to the controller resource; This device adopts analog switch CD4052 that the controller sample port is expanded; The 1X pin that sample port is expanded analog switch CD4052 in the circuit receives second the mine fan tach signal VF2 identical with VF1, and VF3, VF4 are respectively third and fourth mine fan tach signal.
Claims (6)
1. mine fan rotation-speed measuring device is characterized in that:
This rotation speed of fan measurement mechanism comprises reflector, photoelectric sensor circuit, isolation shaping circuit, frequency-voltage conversion circuit, sample port expansion circuit;
Reflector is fixed on the coupling shaft between motor and the flabellum;
The receiving end and the transmitting terminal of photoelectric sensor face reflector, be installed in from 10～35mm place, reflector edge, and apart from the reflector plane 8～15mm;
The VC pin of the receiving end of photoelectric sensor is connected with an end of the 3rd resistance (R3) in the isolation shaping circuit; The output terminal of isolating first operational amplifier in the shaping circuit is connected with 1 pin of voltage to frequency modular converter LM2917;
4 pins of voltage to frequency modular converter LM2917 are connected with the 0x input pin that sample port is expanded analog switch CD4052 in the circuit.
2. mine fan rotation-speed measuring device according to claim 1 is characterized in that:
What described reflector adopted is the circular slab of diameter 200mm; A circular port is established at the reflector center, and the aperture is identical with the blower fan shaft diameter; The diameter of reflector is 10 scallop holes of cloth on the ring surface of 100～200mm.
3. mine fan rotation-speed measuring device according to claim 1 is characterized in that:
Described photoelectric sensor circuit comprises: photoelectric sensor, first resistance (R1), second resistance (R2); Connection between the described device:
The VD+ pin of the transmitting terminal of described photoelectric sensor connects first positive source (VCC) through first resistance (R1); The VD-pin of the transmitting terminal of photoelectric sensor directly connects first power cathode (GND); The VC pin of the receiving end of photoelectric sensor connects first positive source (VCC) through second resistance (R2); The VE pin of the receiving end of photoelectric sensor directly connects first power cathode (GND).
4. mine fan rotation-speed measuring device according to claim 1 is characterized in that:
Described isolation shaping circuit comprises: first operational amplifier, optocoupler, the 3rd resistance (R3), the 4th resistance (R4), the 5th resistance (R5), the 6th resistance (R6); Connection between the described device:
The LED+ pin of optocoupler connects an end of the 3rd resistance (R3) in the described isolation shaping circuit, and the LED-pin connects first power cathode (GND); The CC pin of optocoupler links to each other with the inverting input of first operational amplifier, also is connected to second source positive pole (VDD) through the 4th resistance (R4) simultaneously; The EE pin of optocoupler is directly linked second source negative pole (DGND); The in-phase input end one tunnel of first operational amplifier is received second source positive pole (VDD) through the 5th resistance (R5), and another Lu Jingdi six resistance (R6) are received second source negative pole (DGND).
5. mine fan rotation-speed measuring device according to claim 1 is characterized in that:
Described frequency-voltage conversion circuit comprises voltage to frequency modular converter LM2917, first electric capacity (C1), second electric capacity (C2), the 7th resistance (R7), the 8th resistance (R8), the 9th resistance (R9); Connection between the described device:
2 pins of described voltage to frequency modular converter LM2917 are received second source negative pole (DGND) through first electric capacity (C1); Parallelly connected second electric capacity (C2) and the 8th resistance (R8) between 3 pins of voltage to frequency modular converter LM2917 and the second source negative pole (DGND); 4 pins of voltage to frequency modular converter LM2917 are connected to 7 pins of voltage to frequency modular converter LM2917, and connect second source negative pole (DGND) through the 9th resistance (R9); 6 pins of voltage to frequency modular converter LM2917 connect second source positive pole (VDD) through the 7th resistance (R7); 5 pins of voltage to frequency modular converter LM2917 have directly been linked second source anodal (VDD); 8 pins of voltage to frequency modular converter LM2917 are linked second source negative pole (DGND).
6. mine fan rotation-speed measuring device according to claim 1 is characterized in that:
Described sample port is expanded circuit and is comprised: analog switch CD4052, controller S3C2440, the tenth resistance (R10), stabilivolt (D1), the second operational amplifier LM358; Connection between the described device:
First choosing end (A) of analog switch CD4052 is connected with the GPB0 pin of controller S3C2440 in the described sample port expansion circuit; Second choosing end (B) of analog switch CD4052 is connected with the GPB1 pin of controller S3C2440; The output terminal of analog switch CD4052 (X) is connected with the in-phase input end of second operational amplifier through the tenth resistance (R10); The in-phase input end of second operational amplifier connects the negative pole of stabilivolt (D1), and the positive pole of stabilivolt (D1) connects second source negative pole (DGND); The output terminal of second operational amplifier (Vo2) connects the inverting input of second operational amplifier and the AIN0 pin of controller S3C2440; The VH pin of controller S3C2440 connects second source positive pole (VDD), and the VL pin of controller S3C2440 connects second source negative pole (DGND).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120239812U CN202133676U (en) | 2011-07-08 | 2011-07-08 | A mine fan speed measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120239812U CN202133676U (en) | 2011-07-08 | 2011-07-08 | A mine fan speed measuring device |
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| CN202133676U true CN202133676U (en) | 2012-02-01 |
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| CN201120239812U Expired - Fee Related CN202133676U (en) | 2011-07-08 | 2011-07-08 | A mine fan speed measuring device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735866A (en) * | 2012-07-06 | 2012-10-17 | 蔡洪文 | Photoelectric counter pulse-based method for measuring rotation speed difference of two shafts |
| CN104459184A (en) * | 2014-12-23 | 2015-03-25 | 云南航天工业有限公司 | Diesel oil burner motor rotating speed measuring method |
| CN104613829A (en) * | 2014-12-26 | 2015-05-13 | 中国人民解放军总装备部军械技术研究所 | Energy-prestorage rotating transmission device |
| CN106405142A (en) * | 2016-09-14 | 2017-02-15 | 天津工业大学 | Device and method for measuring rotational speed ripple and torque ripple of motor |
| CN111130276A (en) * | 2020-01-21 | 2020-05-08 | 上海雷智电机有限公司 | Three-phase signal generating device |
| CN111751568A (en) * | 2020-06-30 | 2020-10-09 | 内蒙航天动力机械测试所 | Data acquisition-based rotating speed real-time test system and control method |
| CN113418719A (en) * | 2021-06-17 | 2021-09-21 | 哈尔滨东安汽车动力股份有限公司 | Range extender bench test anti-reversion protection and rotating speed measurement device and using method |
| CN115875144A (en) * | 2022-11-28 | 2023-03-31 | 中船动力研究院有限公司 | Speed threshold device and engine |
-
2011
- 2011-07-08 CN CN201120239812U patent/CN202133676U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102735866A (en) * | 2012-07-06 | 2012-10-17 | 蔡洪文 | Photoelectric counter pulse-based method for measuring rotation speed difference of two shafts |
| CN104459184A (en) * | 2014-12-23 | 2015-03-25 | 云南航天工业有限公司 | Diesel oil burner motor rotating speed measuring method |
| CN104613829A (en) * | 2014-12-26 | 2015-05-13 | 中国人民解放军总装备部军械技术研究所 | Energy-prestorage rotating transmission device |
| CN106405142A (en) * | 2016-09-14 | 2017-02-15 | 天津工业大学 | Device and method for measuring rotational speed ripple and torque ripple of motor |
| CN111130276A (en) * | 2020-01-21 | 2020-05-08 | 上海雷智电机有限公司 | Three-phase signal generating device |
| CN111751568A (en) * | 2020-06-30 | 2020-10-09 | 内蒙航天动力机械测试所 | Data acquisition-based rotating speed real-time test system and control method |
| CN113418719A (en) * | 2021-06-17 | 2021-09-21 | 哈尔滨东安汽车动力股份有限公司 | Range extender bench test anti-reversion protection and rotating speed measurement device and using method |
| CN115875144A (en) * | 2022-11-28 | 2023-03-31 | 中船动力研究院有限公司 | Speed threshold device and engine |
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Granted publication date: 20120201 Termination date: 20120708 |