CN205176051U - Mining wind speed sensor circuit - Google Patents
Mining wind speed sensor circuit Download PDFInfo
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- CN205176051U CN205176051U CN201521004392.5U CN201521004392U CN205176051U CN 205176051 U CN205176051 U CN 205176051U CN 201521004392 U CN201521004392 U CN 201521004392U CN 205176051 U CN205176051 U CN 205176051U
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- heating resistor
- wind speed
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- temperature
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Abstract
The utility model discloses a mining wind speed sensor circuit, including installing heating resistor and the temperature monitoring resistance on the probe, at the inside thermostatic control circuit that is provided with of probe, the fluid makes its temperature reduce from the external flow mistake of popping one's head in, the heat of taking away the heating resistor, and the voltage at thermostatic control circuit adjusts heating resistor both ends makes to keep the stationary temperature poor between heating resistor and the fluid, the change measurable quantity play fluid speed of by heating resistance both ends voltage. The utility model provides a this kind of sensor circuit, with sensor probe cooperation, measurable quantity wind speed, wind direction, the three parameter of temperature simultaneously, simultaneously, temperature compensating is carried out to the wind speed measurement to usable temperature measurement function, carries high wind speed measurement accuracy. Compare with current like product, the precision of this device is higher, and the function is abundanter, makes air velocity transducer have higher in -service use and worth, provides the instrument of an ideal for wind speed's monitoring.
Description
Technical field
The utility model relates to sensor technical field, is specifically related to a kind of mining wind speed wind transducer circuit.
Background technology
Sensor a kind ofly all has the important and electron device of widespread use in every field, it can by parameters, if the information feed back such as temperature, humidity, distance, speed are to disposal system, with the thin portion status information making disposal system can control current concern part, to realize specific controlling functions.
Air velocity transducer is that one can monitor wind speed, air force continuously, the device of reality in real time can be carried out to the wind speed air quantity in residing tunnel, be the important instrument of mining ventilation and safety parameter measurement, be mainly used in each mine ventilation main return airway, air port, the main air measuring station in down-hole, ventilating fan well head, driving face, coal-face etc. that underground coal mine has gas explosion danger.The safety of performance to underground operators of air velocity transducer has material impact.
Existing air velocity transducer can only measure single wind speed, cannot carry out wind direction (positive and negative) and measure, therefore make the practical application of air velocity transducer be restricted, can not the ventilation situation of reaction monitoring point all sidedly.
Summary of the invention
For above-mentioned problems of the prior art, the purpose of this utility model is, provides a kind of mining wind speed wind transducer circuit, to make air velocity transducer possess the functions such as wind direction measurement and temperature survey, promotes the actual use value of air velocity transducer.
In order to realize above-mentioned task, the utility model by the following technical solutions:
A kind of mining wind speed wind transducer circuit, comprises and is arranged on heating resistor on probe and temperature monitoring resistance, probe inside is provided with constant temperature control circuit; Fluid flows through from probe outside, the heat taking away heating resistor makes its temperature reduce, constant temperature control circuit regulates the voltage at heating resistor two ends, makes to keep stationary temperature poor between heating resistor and fluid, can measure fluid velocity by the change of heating resistor both end voltage.
Further, described wind speed wind direction sensor circuit also comprises wind direction metering circuit, this wind direction metering circuit comprises the first branch road and the second branch road that are arranged in parallel, first branch road is arranged in series the first rheostat R1 (500R/100ppm) and the first reference resistor Rs_L, second circuit is arranged in series the second resistance R2 and the second reference resistor Rs_R, the wherein upper termination power of the first branch road and the second branch road, lower end ground connection; The first described reference resistor Rs_L and the second reference resistor Rs_R is separately positioned on the both sides of heating resistor; Being designated as V1 from getting a point between R1 and Rs_L, being designated as V2 from getting a point between R2 and Rs_R, being judged the direction of wind speed by the polarity of voltage between V1 and V2.
Further, described constant temperature control circuit comprises the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the second rheostat R6, the 7th resistance R7, the 9th resistance R9, triode Q1, operational amplifier U1, electric capacity C6, noninductive electric capacity CD1, and wherein said temperature monitoring resistance, R3, R6, R4, R5 are connected to the collector of Q1 after connecting successively and connect power supply; The emitter of Q1 is connected R7 and described heating resistor successively; The positive input terminal of U1 is connected between R3 and R6, and the negative input end of U1 is connected between R7 and heating resistor, and the output terminal of U1 is connected with the base stage of Q1; C6 with CD1 parallel connection is connected the positive power source terminal of U1 afterwards and connects power supply, the negative power end of U1 and the equal ground connection of heating resistor; R9 is connected between the positive input terminal of U1 and the positive power source terminal of U1.
The utility model has following technical characterstic:
This sensor circuit that the utility model proposes, coordinate with sensor probe, can simultaneously can measuring wind, wind direction (positive and negative), temperature three parameters, simultaneously, temperature measurement function can be utilized to carry out temperature compensation to measuring wind speed, improve measuring wind speed precision.Compared with existing like product, the precision of this device is higher, and function is abundanter, and make air velocity transducer have higher actual use value, the monitoring for wind speed and direction provides a kind of desirable instrument:
1. wind speed can be surveyed low: can measure and be low to moderate 0.1m/s dead slow speed wind, be better than the measurement lower limit of electronics air velocity transducer 0.4m/s in the market;
2. broad quantum: measuring wind speed scope (0.1 ~ 25) m/s, covers micro-, basic, normal, high 4 kinds of measurement ranges;
3. function is strong: can simultaneously measuring wind, wind direction, temperature, carries sound and light alarm, highlighted numeral method, and multiple output signal can unrestricted choice;
4. reliability is high: movement-less part, outstanding repeatability, long-time stability.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of sensor circuit of the present utility model;
Fig. 2 is application schematic diagram of the present utility model;
Embodiment
Defer to technique scheme, as shown in Figure 1, the utility model provides a kind of mining wind speed wind transducer circuit, comprises and is arranged on heating resistor Rh on probe and temperature monitoring resistance Pt, and resistance adopts PT resistance; Probe inside is provided with constant temperature control circuit CTA, ensures between heating resistor Rh and fluid (wind), to keep stationary temperature difference △ T by constant temperature control circuit.
When fluid flows through from probe outside, its temperature is reduced the heat taking away heating resistor, the heat that flow velocity is taken away sooner is more; Constant temperature control circuit regulates the voltage V_Bs at heating resistor Rh two ends, make between heating resistor Rh and fluid, to keep stationary temperature difference △ T, then the height change of voltage V_Bs just can represent the change of wind speed size, can measure fluid velocity, i.e. wind speed by the change of heating resistor Rh both end voltage.
Different from traditional like product, this device while detection wind speed, can measure wind direction:
Wind speed wind direction sensor circuit also comprises wind direction metering circuit, this wind direction metering circuit comprises the first branch road and the second branch road that are arranged in parallel, first branch road is arranged in series the first rheostat R1 (500R/100ppm) and the first reference resistor Rs_L, second circuit has been arranged in series the second resistance R2 and the second reference resistor Rs_R; Wherein the first reference resistor Rs_L, the second reference resistor Rs_R and the second resistance R2 all adopt PT420 resistance; The wherein upper termination power of the first branch road and the second branch road, lower end ground connection; The first described reference resistor Rs_L and the second reference resistor Rs_R is separately positioned on the both sides of heating resistor; Being designated as V1 from getting a point between R1 and Rs_L, being designated as V2 from getting a point between R2 and Rs_R, being judged the direction of wind speed by the voltage U between V1 and V2 _ Br polarity.Its principle is, when fluid flows to different directions, the temperature of Rs_L and Rs_R can be variant, thus cause bridge arm voltage U_Br reversal of poles, and U_Br polarity just represents the direction of wind speed.
A kind of temperature control circuit of tool is still further provides in this programme:
Constant temperature control circuit comprises the 3rd resistance R3 (120R/20ppm), the 4th resistance R4 (620R/20ppm), the 5th resistance R5 (6.8K), the second rheostat R6 (200R/100ppm), the 7th resistance R7 (38R/20ppm), the 9th resistance R9 (1M), triode Q1 (MPSA05), operational amplifier U1 (TLV27L1), electric capacity C6 (0.1uF), noninductive electric capacity CD1 (1uF/10V), and wherein said temperature monitoring resistance, R3, R6, R4, R5 are connected to the collector of Q1 after connecting successively and connect power supply; The emitter of Q1 is connected R7 and described heating resistor successively; The positive input terminal of U1 is connected between R3 and R6, and the negative input end of U1 is connected between R7 and heating resistor, and the output terminal of U1 is connected with the base stage of Q1; C6 with CD1 parallel connection is connected the positive power source terminal of U1 afterwards and connects power supply, the negative power end of U1 and the equal ground connection of heating resistor; R9 is connected between the positive input terminal of U1 and the positive power source terminal of U1.
Be illustrated in figure 2 the application schematic diagram of this device.By the circuit application of this device on sensor probe, then connecting controller can use, and using method is identical with traditional sensor.
Claims (3)
1. a mining wind speed wind transducer circuit, is characterized in that, comprises and is arranged on heating resistor on probe and temperature monitoring resistance, and probe inside is provided with constant temperature control circuit; Fluid flows through from probe outside, the heat taking away heating resistor makes its temperature reduce, constant temperature control circuit regulates the voltage at heating resistor two ends, makes to keep stationary temperature poor between heating resistor and fluid, can measure fluid velocity by the change of heating resistor both end voltage.
2. mining wind speed wind transducer circuit as claimed in claim 1, it is characterized in that, described wind speed wind direction sensor circuit also comprises wind direction metering circuit, this wind direction metering circuit comprises the first branch road and the second branch road that are arranged in parallel, first branch road is arranged in series the first rheostat R1 and the first reference resistor Rs_L, second circuit is arranged in series the second resistance R2 and the second reference resistor Rs_R, wherein the upper termination power of the first branch road and the second branch road, lower end ground connection; The first described reference resistor Rs_L and the second reference resistor Rs_R is separately positioned on the both sides of heating resistor; Being designated as V1 from getting a point between R1 and Rs_L, being designated as V2 from getting a point between R2 and Rs_R, being judged the direction of wind speed by the polarity of voltage between V1 and V2.
3. mining wind speed wind transducer circuit as claimed in claim 1, it is characterized in that, described constant temperature control circuit comprises the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the second rheostat R6, the 7th resistance R7, the 9th resistance R9, triode Q1, operational amplifier U1, electric capacity C6, noninductive electric capacity CD1, and wherein said temperature monitoring resistance, R3, R6, R4, R5 are connected to the collector of Q1 after connecting successively and connect power supply; The emitter of Q1 is connected R7 and described heating resistor successively; The positive input terminal of U1 is connected between R3 and R6, and the negative input end of U1 is connected between R7 and heating resistor, and the output terminal of U1 is connected with the base stage of Q1; C6 with CD1 parallel connection is connected the positive power source terminal of U1 afterwards and connects power supply, the negative power end of U1 and the equal ground connection of heating resistor; R9 is connected between the positive input terminal of U1 and the positive power source terminal of U1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521004392.5U CN205176051U (en) | 2015-12-07 | 2015-12-07 | Mining wind speed sensor circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521004392.5U CN205176051U (en) | 2015-12-07 | 2015-12-07 | Mining wind speed sensor circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205176051U true CN205176051U (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521004392.5U Active CN205176051U (en) | 2015-12-07 | 2015-12-07 | Mining wind speed sensor circuit |
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| CN (1) | CN205176051U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871823A (en) * | 2018-04-28 | 2018-11-23 | 宁波威霖住宅设施有限公司 | A kind of strainer life testing method |
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2015
- 2015-12-07 CN CN201521004392.5U patent/CN205176051U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108871823A (en) * | 2018-04-28 | 2018-11-23 | 宁波威霖住宅设施有限公司 | A kind of strainer life testing method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: Weiyang District 710018 in Shaanxi Province Economic Development Zone of Xi'an caotan eco industrial park is 3699 Yuan Lu Patentee after: Shaanxi Sida explosion-proof safety Polytron Technologies Inc Address before: Caotan economic and Technological Development Zone, eco industrial park in Shaanxi city of Xi'an province is 710018 Yuan Lu No. 3699 Patentee before: Shaanxi Star Coal Mine Safety Equipment Co., Ltd. |