CN102455225A - Wireless thermal resistance temperature instrument - Google Patents
Wireless thermal resistance temperature instrument Download PDFInfo
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- CN102455225A CN102455225A CN201010512195XA CN201010512195A CN102455225A CN 102455225 A CN102455225 A CN 102455225A CN 201010512195X A CN201010512195X A CN 201010512195XA CN 201010512195 A CN201010512195 A CN 201010512195A CN 102455225 A CN102455225 A CN 102455225A
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- thermal resistance
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- temperature
- resistance
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Abstract
The invention relates to a wireless thermal resistance temperature instrument, which is formed by combining a radio communication technology, a signal processing technology and a thermal resistance temperature sensing technology and is used for measuring the temperature (generally between -200 and 500 DEG C) of a target object in a low-temperature area during industrial production. The problem to be solved is to provide a radio transmission mode for the thermal resistance temperature instrument and transmit a resistance value of a thermal resistor to a far-end computer or other control display equipment in a radio manner, so that the conventional mode of transmitting a thermal resistance signal to a computer or an instrument through a physical lead can be replaced. The wireless thermal resistance temperature instrument has the advantages of advanced technical theory, stable wireless signal and the like and is easy to operate. The wireless thermal resistance temperature instrument mainly comprises two parts, namely a wireless thermal resistance data acquisition device and a wireless data receiver.
Description
Technical field
The present invention is that a kind of radio communication technology, signal processing technology and resistance and temperature sensing technology combine, the wireless resistance and temperature instrument (being called for short wireless thermal resistance) of the target object temperature (usually at-200 degrees centigrade to 500 degrees centigrade) of low-temperature space in being used in commercial production, measuring.
The resistance and temperature instrument is widely used in industrial sectors such as oil, chemical industry, metallurgy, electric power, machinery, food, plastics, thermal treatment.
Background technology
Thermal resistance be utilize material when temperature changes self-resistance also along with the characteristic that changes is measured temperature.Thermal resistance is mostly processed by the simple metal material, and using maximum at present is platinum resistance thermometer sensor, and copper thermistor, has begun to adopt made thermal resistances such as nickel, manganese and rhodium now.Thermal resistance need be delivered to resistance signal on Computer Control Unit or other primary instrument through the physics lead-in wire usually.
The resistance and temperature instrument mainly comprises:
The assembled thermal resistance is mainly formed basic structure by terminal box, protection tube, connection terminal, insulating sleeve and temperature-sensing element, and is equipped with various fixing device for installing compositions.
The armored thermal resistance is littler, flexible than assembled thermal resistance diameter, the occasion that assembled can't be installed suits to be installed in; Its outer protection tube adopts stainless steel; In therefore be full of high-density oxide matter insulator it have very strong antipollution and good physical strength, can use in the comparatively abominable occasion of environment.
Structure, the principle of flame-proof type thermal resistance and assembled thermal resistance are basic identical, and difference is that the shell of flame-proof type product adopts blast resistance construction, and when enclosure was blasted, the spark heat of blast can not be to external diffusion.
Summary of the invention
The problem that the present invention will solve is for the resistance and temperature instrument a kind of wireless radio transmission mode to be provided; Be transferred to the resistance value of thermal resistance or its corresponding temperature value on the computing machine or other control display device of far-end through wireless mode, thereby can substitute the existing mode of leaning on the physics lead-in wire to be transferred to thermal resistance signal computing machine or instrument.The present invention possesses skills, and theory is advanced, wireless signal is stable and simple operation and other advantages.
The present invention mainly comprises two parts: wireless thermal resistance data acquisition unit, wireless data receiver.
Wireless thermal resistance data acquisition unit is mounted in the temperature of the responsible use thermal resistance temperature sensor measurement target object on the object to be measured; Is the analog signal conversion of resistance value digital signal, sends to the wireless data receiver to temperature data through wireless transport module.It comprises:
● circuit board box, the inside are equipped with the electron device and the circuit board of responsible wireless receiving and dispatching, signal Processing etc.
● temp probe, thermal resistance sensor is equipped with in the inside.
● antenna is used for the transmitting/receiving wireless signal.
● heat insulation bolt is used for fixing.(stationary installation of thermometric instrument is varied, and this is just wherein a kind of).
The wireless data receiver is placed on the about tens meters control desks that arrive in the hundreds of rice scope of the wireless thermal resistance data acquisition unit of distance, is connected it with the control desk computer, can show the temperature of testee on computers.It comprises:
● circuit board box, the inside are equipped with the electron device and the circuit board of responsible wireless receiving and dispatching, signal Processing etc.
● the serial ports link, it is that receiver links to each other with computer, is responsible for transmitting to computer the interface of data.
● antenna is used for the transmitting/receiving wireless signal.
The funtcional relationship that standard is separately arranged between the resistance of variety classes thermal resistance and the temperature is an example with PT1000 type thermal resistance here, explains its conversion relation.The diaphragm type RTD of thermal resistance temperature sensor PT1000 type; The measurement range that RTD Pt1000 is commonly used is-200 to 650 ℃; Press the IEC751 international standard, temperature coefficient TCR=0.003851, Pt100 (R0=100 Ω), Pt1000 (R0=1000 Ω) are unified design mode RTD.TCR＝(R100-R0)/(R0×100)。If by more high-precision non-linear formula, for example in 0～630.75 ℃ temperature range, the resistance of RTD and the relational expression of temperature are Rt=R0 (1+a θ+b θ 2).In the formula: a=3.96847 * 10-3/ ℃; B=-5.847 * 10-7/ ℃ 2.Can find out from formula, bigger by the direct accounting temperature value of the non-linear formula of RTD difficulty, can use segmentation form normal property method of interpolation to carry out the scale transformation of temperature.Resistance value in resistance value that records and the form is compared, stop comparison during at interval Rn＜R＜Rn+1 up to resistance.Rn corresponding temperature Tn wherein; Rn+1 corresponding temperature Tn+1 adopts the * (Tn+1-Tn)/(Rn+1-Rn) of linear interpolation formula Δ θ=(R-Rn) again, calculates (Tn+ Δ θ) at last and is pairing temperature value.
System adopts open ISM (Industrial Scientific Medical) frequency range, and emissive power 10dBm adopts the CC1101 wireless radiofrequency chip of TI company, satisfies the requirement of short distance low-power wireless emission standard.The mode that the collision processing protocol adopts wireless thermal resistance data acquisition unit active mode to send temperature data to the wireless data receiver, the wireless data receiver is in and continues the state of intercepting.Wireless thermal resistance data acquisition unit is in dormant state at ordinary times, and current sinking is every at a distance from one period cycle hardly, initiatively sends temperature data after the timing wake-up.
Description of drawings
Thermal resistance data acquisition unit pictorial diagram that Fig. 1 is wireless.
Fig. 2 wireless data receiver pictorial diagram.
Embodiment
This system is very easy to use, is example with Fig. 1, installs battery at first for wireless resistance and temperature instrument, inserts the thermometric groove of target object to be measured to its temp probe, and it is fixing to tight a bolt, and places antenna.Then, be connected to the serial interface of computer to the serial ports end of wireless data receiver, place antenna.At last, open computer, start the display interface that temperature display interface that we provide or any mechanism of third party provide, can watch temperature data.
Claims (1)
1. the present invention's problem that will solve is for the resistance and temperature instrument a kind of wireless radio transmission mode to be provided; Be transferred to the resistance value of thermal resistance or its corresponding temperature value on the computing machine or other control display device of far-end through wireless mode, thereby can substitute the existing mode of leaning on the physics lead-in wire to be transferred to thermal resistance signal computing machine or instrument.The employing of the invention property belongs to the wireless communication technology of ISM (Industrial Scientific Medical) frequency range and controls the resistance value of thermal resistance or its corresponding temperature value remote transmission on the display device to computing machine or other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010512195XA CN102455225A (en) | 2010-10-20 | 2010-10-20 | Wireless thermal resistance temperature instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010512195XA CN102455225A (en) | 2010-10-20 | 2010-10-20 | Wireless thermal resistance temperature instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102455225A true CN102455225A (en) | 2012-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010512195XA Pending CN102455225A (en) | 2010-10-20 | 2010-10-20 | Wireless thermal resistance temperature instrument |
Country Status (1)
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| CN (1) | CN102455225A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102455223A (en) * | 2010-10-21 | 2012-05-16 | 姚戈 | Wireless thermocouple temperature instrument |
| CN106710189A (en) * | 2016-12-29 | 2017-05-24 | 北京国电龙瑞电力技术有限公司 | Monitoring data acquisition and transmission device |
| CN109142870A (en) * | 2018-09-23 | 2019-01-04 | 东南大学 | The method that a kind of pair of Multi-channel hot resistance carries out wireless accurate measurement |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710005A (en) * | 2009-12-08 | 2010-05-19 | 苏州比锝电子技术有限公司 | Water temperature sensor node for wireless sensor network |
| CN201514288U (en) * | 2009-09-28 | 2010-06-23 | 泉州科力电气有限公司 | Temperature online monitoring system for switch cabinet based on ZigBee wireless network |
| CN101825495A (en) * | 2009-12-10 | 2010-09-08 | 浙江大学 | Temperature multipoint monitoring system based on Bluetooth |
-
2010
- 2010-10-20 CN CN201010512195XA patent/CN102455225A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201514288U (en) * | 2009-09-28 | 2010-06-23 | 泉州科力电气有限公司 | Temperature online monitoring system for switch cabinet based on ZigBee wireless network |
| CN101710005A (en) * | 2009-12-08 | 2010-05-19 | 苏州比锝电子技术有限公司 | Water temperature sensor node for wireless sensor network |
| CN101825495A (en) * | 2009-12-10 | 2010-09-08 | 浙江大学 | Temperature multipoint monitoring system based on Bluetooth |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102455223A (en) * | 2010-10-21 | 2012-05-16 | 姚戈 | Wireless thermocouple temperature instrument |
| CN106710189A (en) * | 2016-12-29 | 2017-05-24 | 北京国电龙瑞电力技术有限公司 | Monitoring data acquisition and transmission device |
| CN109142870A (en) * | 2018-09-23 | 2019-01-04 | 东南大学 | The method that a kind of pair of Multi-channel hot resistance carries out wireless accurate measurement |
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| C06 | Publication | ||
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| CB02 | Change of applicant information |
Address after: 301600 Tianjin City Huayuan Industrial Zone Branch Three Road No. 811 Hua Dingzhi 6 Applicant after: Yao Ge Address before: 301600 Tianjin city Jinghai County Huayuan International Business Center 5019 Applicant before: Yao Ge |
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120516 |