CN104202843A - Heating device for reflection-type ultrasonic anemoscope - Google Patents
Heating device for reflection-type ultrasonic anemoscope Download PDFInfo
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- CN104202843A CN104202843A CN201410421549.8A CN201410421549A CN104202843A CN 104202843 A CN104202843 A CN 104202843A CN 201410421549 A CN201410421549 A CN 201410421549A CN 104202843 A CN104202843 A CN 104202843A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 50
- 239000000919 ceramic Substances 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 238000009529 body temperature measurement Methods 0.000 claims description 17
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000002604 ultrasonography Methods 0.000 description 7
- 230000008014 freezing Effects 0.000 description 3
- 238000007710 freezing Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The invention provides a heating device for a reflection-type ultrasonic anemoscope and belongs to the field of measurement on the aspects of environmental elements. The problem that the whole ultrasonic anemoscope cannot normally work at low temperature due to the fact that an ultrasonic transducer and the refection face are frozen is solved. The heating device for the reflection-type ultrasonic anemoscope comprises a control circuit power supply, a heating circuit power supply, a reference voltage setting circuit, a comparison circuit, a temperature measuring circuit and a heating circuit. The reference voltage setting circuit comprises n+2 resistors R4_1 and n+2 resistors R4_2, and the temperature measuring circuit comprises n+2 resistors R6_1 and n+2 resistors R6_2. The heating circuit comprises n+2 audions Q7_2 and n+2 industrial-grade heating ceramic substrates P7_1. The reference voltage setting circuit provides reference voltage for the comparison circuit, the temperature measuring circuit inputs a measurement temperature signal into the comparison circuit, and the comparison circuit controls the heating circuit to perform heating or stop heating. The heating device is suitable for heating of the reflection-type ultrasonic anemoscope.
Description
Technical field
The invention belongs to Environment Oriented key element fields of measurement.
Background technology
Flourish along with wind-powered electricity generation industry, increasing to the demand of wind speed/wind direction measuring instrument.With respect to mechanical type wind speed/wind direction measuring instrument, ultrasound bearing has a lot of advantages, such as: there is no that mechanism is not easy to wear, to safeguard in simple and convenient, life cycle that certainty of measurement reduces not obvious etc.But, the comparatively cold mean temperature below 0 degree Celsius in regional winter that a large amount of wind-resources are abundant, ultrasound bearing at low temperatures, exists because of ultrasonic transducer and the reflecting surface problem that causes anemometer normally to work of freezing.In order to address this problem, ultrasound bearing must install assisted heating device additional, and the reliability of this device work has also directly determined the task performance of ultrasound bearing entirety.
Summary of the invention
The present invention is in order to solve ultrasound bearing at low temperatures because of ultrasonic transducer and the icing problem that causes anemometer entirety normally to work of reflecting surface, to have proposed a kind of heater for reflecting type ultrasonic anemometer.
A kind of heater for reflecting type ultrasonic anemometer of the present invention, it comprises that control circuit power supply 1, heater circuit power supply 2, reference voltage arrange circuit 4, comparison circuit 5, temperature measurement circuit 6 and heater circuit 7;
Reference voltage arranges circuit 4 and comprises n+2 resistance R 4_1 and n+2 resistance R 4_2, and wherein, n is positive integer; Temperature measurement circuit 6 comprises n+2 resistance R 6_1 and n+2 resistance R 6_2; Heater circuit 7 comprises n+2 triode Q7_2 and n+2 technical grade heating ceramic substrate P7_1; Each resistance R 4_1 and a resistance R 4_2 n+2 bar in series reference voltage branch road, and between the resistance R 4_1 of each branch road and resistance R 4_2, all draw the input that a wire connects a reference voltage signal of comparison circuit 5, and n+2 bar reference voltage branch road is simultaneously in parallel, each resistance R 6_1 and a resistance R 6_2 n+2 bar in series thermometric branch road; And between the resistance R 6_1 of each branch road and resistance R 6_2, all draw the input that a wire connects a temperature voltage signal of comparison circuit 5, described n+2 bar thermometric branch road is simultaneously in parallel;
One end n+2 bar heating in series branch road of all with one technical grade heating ceramic substrate P7_1 of collector electrode of each triode Q7_2; And the base stage of each triode Q7_2 all connects a signal output part of comparison circuit 5, the emitter of each triode Q7_2 connects the emitter of the triode Q7_2 of all the other n+1 bar heating branch roads simultaneously, and the other end of each technical grade heating ceramic substrate P7_1 connects the other end of all the other n+1 technical grade heating ceramic substrate P7_1 simultaneously.
The present invention is with respect to the temperature control scheme based on processor, and thermometric, temperature control and the heater circuit that adopts discrete device to build has the advantages that reliability is high and operating temperature range is wide (subzero 55 degree cold start-ups).The present invention can not rely on processor, works alone, and is convenient to the system integration and repair and replacement.
Brief description of the drawings
Fig. 1 is the electrical block diagram of a kind of heater for reflecting type ultrasonic anemometer of the present invention.
Embodiment
Embodiment one, in conjunction with Fig. 1, present embodiment is described, a kind of heater for reflecting type ultrasonic anemometer described in present embodiment, it comprises that control circuit power supply 1, heater circuit power supply 2, reference voltage arrange circuit 4, comparison circuit 5, temperature measurement circuit 6 and heater circuit 7;
Reference voltage arranges circuit 4 and comprises n+2 resistance R 4_1 and n+2 resistance R 4_2, and wherein, n is positive integer; Temperature measurement circuit 6 comprises n+2 resistance R 6_1 and n+2 resistance R 6_2; Heater circuit 7 comprises n+2 triode Q7_2 and n+2 technical grade heating ceramic substrate P7_1; Each resistance R 4_1 and a resistance R 4_2 n+2 bar in series reference voltage branch road, and between the resistance R 4_1 of each branch road and resistance R 4_2, all draw the input that a wire connects a reference voltage signal of comparison circuit 5, and n+2 bar reference voltage branch road is simultaneously in parallel, each resistance R 6_1 and a resistance R 6_2 n+2 bar in series thermometric branch road; And between the resistance R 6_1 of each branch road and resistance R 6_2, all draw the input that a wire connects a temperature voltage signal of comparison circuit 5, described n+2 bar thermometric branch road is simultaneously in parallel;
One end n+2 bar heating in series branch road of all with one technical grade heating ceramic substrate P7_1 of collector electrode of each triode Q7_2; And the base stage of each triode Q7_2 all connects a signal output part of comparison circuit 5, the emitter of each triode Q7_2 connects the emitter of the triode Q7_2 of all the other n+1 bar heating branch roads simultaneously, and the other end of each technical grade heating ceramic substrate P7_1 connects the other end of all the other n+1 technical grade heating ceramic substrate P7_1 simultaneously.
Described in present embodiment, the magnitude of voltage V1 of control circuit power supply is 12V, 5 volts or 3.3 volts.
The magnitude of voltage V2 of heater circuit power supply is 24 volts.
Reference voltage arrange circuit Youn+2 road independently bleeder circuit form, wherein n road provides reference voltage for the temperature measurement circuit that is respectively n ultrasonic transducer, 2 unnecessary tunnels are for the temperature measurement circuit of ultrasonic reflections face provides reference voltage.The bleeder circuit operation principle that reference voltage arranges circuit is the ratio output reference voltage according to two divider resistances, taking i road bleeder circuit as example, described 1≤i≤n+2, the reference voltage size of output is V1R4_2/R4_2+R4_1, and in formula, resistance R 4_2 and resistance R 4_1 are respectively the resistance value of divider resistance R4_2 and resistance R 4_1.
Temperature measurement circuit is connected with comparison circuit entirety, and temperature measurement circuit Youn+2 road independently temperature measuring circuit forms, and wherein temperature is measured for being respectively n ultrasonic transducer in n road, and 2 unnecessary tunnels are ultrasonic reflections planar survey temperature.Temperature measuring circuit operation principle is the ratio output voltage according to divider resistance and thermistor, and in the time of variations in temperature, the resistance of thermistor reduces, and output voltage also can change thereupon.Taking i road bleeder circuit as example, output voltage size is V1R6_2/R6_2+R6_1, and in formula, R6_2 and R6_1 are respectively the resistance value of thermistor R6_2 and divider resistance R6_1, therefrom can find out, temperature raises at any time, and R6_2 will diminish, and the temperature voltage of output also diminishes thereupon.
Comparison circuit arranges circuit, temperature measurement circuit and heater circuit entirety with reference voltage and is connected, and is made up of special voltage comparable chip, and in the time that i road reference voltage value is greater than i road voltage, the i road of comparison circuit is output as 0 volt; In the time that i road reference voltage value is less than i road voltage, the i road of comparison circuit 5 is output as V1 volt.
Heater circuit is connected with comparison circuit entirety, and Youn+2 road is heater circuit composition independently, and wherein n road is n ultrasonic transducer heating, and remaining 2 tunnel, for the heating of ultrasonic reflections face, prevents from freezing.Taking i road heater circuit as example, operation principle to heater circuit describes, in the time that the i road of comparison circuit 5 is output as V1 volt, and triode 7_2 conducting, technical grade heating ceramic sheet 7_1 heats under the driving of heater circuit power supply, and heating power is V2
2/ R7_1, wherein R7_1 is the resistance value of technical grade heating ceramic sheet 7_1.In the time that the i road of comparison circuit is output as 0 volt, triode 7_2 closes, and technical grade heating ceramic sheet 7_1 does not heat.
The present invention adopts compared with the noninductive resistance or resistance wire of technical grade ceramic heating flake and existing employing, has following characteristics:
1: frivolous, thickness is only 1mm;
2: durable, reliability is high, life cycle is long, also can adhere to for a long time even if do not connect empty burning of fin;
3: electrical characteristics are to increase with increase in temperature resistance, in the time that temperature measurement circuit lost efficacy, heater circuit, along with increase in temperature heating power reduces, avoids unrestricted intensification to cause internal circuit board to be baked bad.
Therefore the present invention is compared with prior art not fragile, and durable, reliability is high, be more suitable for as reflecting type ultrasonic anemometer heating.
Embodiment two, present embodiment are that resistance R 6_1 and resistance R 6_2 are respectively divider resistance and thermistor to the further illustrating of a kind of heater for reflecting type ultrasonic anemometer described in embodiment one.
Embodiment three, present embodiment are to be the specific embodiment that application of installation to described in embodiment one is had to the anemometer of n ultrasonic transducer to embodiment;
Temperature measurement circuit 6 Youn+2 roads independently temperature measuring circuit form, and wherein temperature is measured for being respectively n ultrasonic transducer in n road, and 2 unnecessary tunnels are ultrasonic reflections planar survey temperature.Temperature measuring circuit operation principle is the ratio output voltage according to divider resistance and thermistor, and in the time of variations in temperature, the resistance of thermistor reduces, and output voltage also can change thereupon.Taking i road bleeder circuit as example, output voltage size is V1R6_2/R6_2+R6_1, and in formula, R6_2 and R6_1 are respectively the resistance value of thermistor R6_2 and divider resistance R6_1, therefrom can find out, temperature raises at any time, and R6_i_2 will diminish, and the temperature voltage of output also diminishes thereupon.For ultrasonic transducer, thermistor is arranged on transducer bottom, the directly temperature of measurement transducer itself with glue Surface Mount.For ultrasonic reflections face, two thermistors become diagonal glue Surface Mount to be arranged on the back side of ultrasonic reflections face.For each channel Temperature Measuring circuit, resistance is along with temperature reduces, and the thermometric magnitude of voltage of output also decreases, and can not have influence on the temperature measurement circuit on other roads, fine solution ultrasound bearing windward side and the larger problem of lee face temperature difference.
Heater circuit Youn+2 road is heater circuit composition independently, and wherein n road is n ultrasonic transducer heating, and remaining 2 tunnel, for the heating of ultrasonic reflections face, prevents from freezing.Taking i road heater circuit as example, operation principle to heater circuit describes, in the time that the i road of comparison circuit is output as V1 volt, and triode pipe 7_2 conducting, technical grade heating ceramic sheet 7_1 heats under the driving of heater circuit power supply, and heating power is V2
2/ R7_1, wherein R7_1 is the resistance value of technical grade heating ceramic sheet 7_1.In the time that the i road of comparison circuit is output as 0 volt, triode 7_2 closes, and technical grade heating ceramic sheet 7_1 does not heat.Each road technical grade heating ceramic sheet and metal-oxide-semiconductor be arranged on the both sides of corresponding ultrasonic transducer bottom, technical grade heating ceramic sheet and triode are jointly to its heating.For ultrasonic reflections face, two-way heating ceramic sheet and triode are cross and are arranged on the back side of ultrasonic reflections face.In the time of triode conducting, a corresponding road heater circuit function is opened, and can not have influence on the temperature measurement circuit on other roads, and this can fine solution ultrasound bearing windward side and the larger problem of lee face temperature difference.
Reference voltage arrange circuit Youn+2 road independently bleeder circuit form, wherein n road provides reference voltage for the temperature measurement circuit that is respectively n ultrasonic transducer, 2 unnecessary tunnels are for the temperature measurement circuit of ultrasonic reflections face provides reference voltage.The bleeder circuit operation principle that reference voltage arranges circuit 4 is the ratio output reference voltage according to two divider resistances, taking i road bleeder circuit as example, the reference voltage size of output is V1R4_2/R4_2+R4_1, and in formula, R4_2 and R4_1 are respectively the resistance value of divider resistance R4_2 and R4_1.The divider resistance of each road bleeder circuit can be different, thereby export different voltage, and then coordinate comparison circuit realization, to each temperature controlling point, different temperature is set.
Claims (2)
1. the heater for reflecting type ultrasonic anemometer, it is characterized in that, it comprises that control circuit power supply (1), heater circuit power supply (2), reference voltage arrange circuit (4), comparison circuit (5), temperature measurement circuit (6) and heater circuit (7);
Reference voltage arranges circuit (4) and comprises n+2 resistance R 4_1 and n+2 resistance R 4_2, and wherein, n is positive integer; Temperature measurement circuit (6) comprises n+2 resistance R 6_1 and n+2 resistance R 6_2; Heater circuit (7) comprises n+2 triode Q7_2 and n+2 technical grade heating ceramic substrate P7_1; Each resistance R 4_1 and a resistance R 4_2 n+2 bar in series reference voltage branch road, and between the resistance R 4_1 of each branch road and resistance R 4_2, all draw the input that a wire connects a reference voltage signal of comparison circuit (5), and n+2 bar reference voltage branch road is simultaneously in parallel, each resistance R 6_1 and a resistance R 6_2 n+2 bar in series thermometric branch road; And between the resistance R 6_1 of each branch road and resistance R 6_2, all draw the input that a wire connects a temperature voltage signal of comparison circuit (5), described n+2 bar thermometric branch road is simultaneously in parallel;
One end n+2 bar heating in series branch road of all with one technical grade heating ceramic substrate P7_1 of collector electrode of each triode Q7_2; And the base stage of each triode Q7_2 all connects a signal output part of comparison circuit (5), the emitter of each triode Q7_2 connects the emitter of the triode Q7_2 of all the other n+1 bar heating branch roads simultaneously, and the other end of each technical grade heating ceramic substrate P7_1 connects the other end of all the other n+1 technical grade heating ceramic substrate P7_1 simultaneously.
2. a kind of heater for reflecting type ultrasonic anemometer according to claim 1, is characterized in that, resistance R 6_1 and resistance R 6_2 are respectively divider resistance and thermistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410421549.8A CN104202843B (en) | 2014-08-25 | 2014-08-25 | A kind of heater for reflecting type ultrasonic anemometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410421549.8A CN104202843B (en) | 2014-08-25 | 2014-08-25 | A kind of heater for reflecting type ultrasonic anemometer |
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| Publication Number | Publication Date |
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| CN104202843A true CN104202843A (en) | 2014-12-10 |
| CN104202843B CN104202843B (en) | 2015-12-09 |
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| CN201410421549.8A Expired - Fee Related CN104202843B (en) | 2014-08-25 | 2014-08-25 | A kind of heater for reflecting type ultrasonic anemometer |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4887467A (en) * | 1987-09-09 | 1989-12-19 | Japan Aviation Electronics Industry Ltd. | Temperature-compensating circuit for accelerometers |
| JP2001196151A (en) * | 2000-01-12 | 2001-07-19 | Takazono Sangyo Kk | Heating element device and temperature control method for the same |
| CN1925699A (en) * | 2006-11-02 | 2007-03-07 | 李木水 | Whole circuit temperature-controlling electric heating device |
| CN201654051U (en) * | 2009-12-03 | 2010-11-24 | 陕西省大气探测技术保障中心 | Meteorologic wind cup rotor heating and temperature control device |
-
2014
- 2014-08-25 CN CN201410421549.8A patent/CN104202843B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4887467A (en) * | 1987-09-09 | 1989-12-19 | Japan Aviation Electronics Industry Ltd. | Temperature-compensating circuit for accelerometers |
| JP2001196151A (en) * | 2000-01-12 | 2001-07-19 | Takazono Sangyo Kk | Heating element device and temperature control method for the same |
| CN1925699A (en) * | 2006-11-02 | 2007-03-07 | 李木水 | Whole circuit temperature-controlling electric heating device |
| CN201654051U (en) * | 2009-12-03 | 2010-11-24 | 陕西省大气探测技术保障中心 | Meteorologic wind cup rotor heating and temperature control device |
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| CN104202843B (en) | 2015-12-09 |
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Effective date of registration: 20160906 Address after: 300308, Tianjin free trade test area (Airport Economic Zone), ring River Road, airport business district, East Building 8, room A508, 024 stations (centralized office area) Patentee after: Department of aerospace Tongchuang Precision Measuring Technology Co. Ltd. (Tianjin) Address before: 1, unit 9, building 3, 150086 Lantian street, Nangang District, Heilongjiang, Harbin, 402 Patentee before: Dong Limin Patentee before: Liu Yuan Patentee before: Li Pengfei |
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Granted publication date: 20151209 Termination date: 20190825 |
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