CN105784175A - High-precision multipoint temperature measurement system based on WIFI communication - Google Patents
High-precision multipoint temperature measurement system based on WIFI communication Download PDFInfo
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- CN105784175A CN105784175A CN201610265236.7A CN201610265236A CN105784175A CN 105784175 A CN105784175 A CN 105784175A CN 201610265236 A CN201610265236 A CN 201610265236A CN 105784175 A CN105784175 A CN 105784175A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
- G01K7/183—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer characterised by the use of the resistive element
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/026—Means for indicating or recording specially adapted for thermometers arrangements for monitoring a plurality of temperatures, e.g. by multiplexing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
- G01K7/20—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer in a specially-adapted circuit, e.g. bridge circuit
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The present invention discloses a high-precision multipoint temperature measurement system based on WIFI communication. The high-precision multipoint temperature measurement system based on WIFI communication comprises a power supply module 1, a temperature data acquisition module 2, a single-chip microcomputer minimum system module 3 and a WIFI communication module 4. The power supply module 1 supplies power to the temperature data acquisition module 2, the single-chip microcomputer minimum system module 3 and the WIFI communication module 4 separately, the multipath temperature information measured by the temperature data acquisition module 2 is sent to the single-chip microcomputer minimum system module 3 in a voltage signal format, and the single-chip microcomputer minimum system module 3 carries out the data calculation and transformation separately to obtain a temperature value; the temperature data obtained after the calculation is transmitted to the WIFI communication module 4, the WIFI communication module 4 transmits the temperature data to a computer via a TCP/IP protocol, and the computer displays and saves the temperature information. The high-precision multipoint temperature measurement system based on WIFI communication of the present invention realizes the high-precision and multipoint measurement of the environment temperature, and realizes the remote wireless transmission of the temperature data simultaneously.
Description
Technical field
The invention belongs to based on the ambient temperature monitoring field being wirelessly transferred, particularly relate to for transmission multidrop environment temperature information, a kind of high accuracy multi-point temperature measurement system based on WIFI communication.
Background technology
In recent years, High Accuracy Temperature Measure System is increasingly extensive in the application of civil and military field, the temperature survey work etc. of constant temperature incubator in the especially realization of optical fibre gyro inner fiber ring multi-point temperature measurement, medical experiment.These job demand measure multi-point temp value constantly, and carrying out manual measurement then needs to expend a large amount of manpower.And high accuracy multipoint temperature measuring system can replace being accomplished manually above task and can preserving measured temperature each time, improve work efficiency, also offer convenience to staff simultaneously.
Institutes Of Technology Of Hebei Gong Rui elder brother, using platinum resistance as temperature-measuring element, temperature constantly is shown with liquid crystal display, system work is controlled with matrix keyboard, devise a practical measurement apparatus for measuring ambient temperature, by external A/D change-over circuit, analog voltage signal is converted to digital signal, data process is carried out again through single-chip microcomputer, this system can measure the temperature information within the scope of-40 DEG C～+40 DEG C, and temperature measurement accuracy is ± 0.1 DEG C of (Gong Ruikun " realization of high-precision platinum resistor temperature measuring system ", instrumental technique, 2008, the 7th phase).But this temperature measuring equipment can only show Current Temperatures information constantly, staff needs collection in worksite temperature information and carries out manual record, cost of labor and equipment cost are higher, do not possess the transmission of long distance wireless temperature data and storage function, in addition this system is only capable of measuring a road temperature information, does not possess the function simultaneously measuring multi-point temp information.
Summary of the invention
It is an object of the invention to provide and a kind of can improve temperature measurement accuracy, based on the high accuracy multi-point temperature measurement system of WIFI communication.
A kind of high accuracy multi-point temperature measurement system based on WIFI communication, including supply module 1, temperature data acquisition module 2, single-chip minimum system module 3 and WIFI communication module 4；
Supply module 1 is connected with temperature data acquisition module 2, single-chip minimum system module 3, WIFI communication module 4 respectively, and powers for temperature data acquisition module 2, single-chip minimum system module 3, WIFI communication module 4；
Temperature data acquisition module 2 includes N number of temperature data acquisition circuit, and each temperature data acquisition circuit includes platinum resistance 5, favour stone bridge for measuring temperature circuit 6 and voltage amplifier circuit 9；Single-chip minimum system module 3 includes the single-chip microcomputer 10 with 16 A/D translation functions and the clock circuit 11, reset circuit 12 and the JTAG debugging interface 13 that are connected with single-chip microcomputer 10；WIFI communication module 4 includes network service CPU module 14, SDRAM module 15 and UART interface 16；
The sensitive ambient temperature information of platinum resistance 5 is also converted to resistance change signal, small voltage signal is converted to by favour stone bridge for measuring temperature circuit 6, temperature simulation voltage signal is obtained after voltage amplifier circuit 9 amplifies, it is transferred to and there are 16 A/D change-over circuits built-in in the single-chip microcomputer 10 of 16 A/D translation functions, it is converted to temperature digital amount through A/D, obtain temperature information again through resolving and filtering, be sent to network service CPU module 14 by UART interface 16；Temperature information is transferred to computer by network service CPU module 14, and temperature information is displayed and preserves by computer.
A kind of high accuracy multi-point temperature measurement system based on WIFI communication of the present invention, it is also possible to including:
1, the wireless network card of computer of the network service CPU module 14 of WIFI communication module 4 and monitoring temperature information is connected by ICP/IP protocol and communicates, with digital quantity form, temperature information is sent to computer, and the temperature data received is displayed and stores by computer.
2, the output signal of N road temperature data acquisition circuit inputs to the different A/D ports in the single-chip microcomputer (10) with 16 A/D translation functions respectively, carries out data conversion and resolving respectively.
Beneficial effect:
The present invention designs a kind of by the WIFI high accuracy multipoint temperature measuring system communicated, multi-point temperature measurement function realizes by increasing platinum resistance quantity and wire extension thereof, when point for measuring temperature increases, only need to increase platinum resistance quantity, it is not necessary to increasing system quantity, a set of temp measuring system can complete multi-point temperature measurement, and temperature value is sent to computer with wireless WIFI communication mode, Computer display storage temperature data, so greatly reduce man power and material, saves job costs.
Based on the temperature measurement function of WIFI communication, realizing the monitoring constantly to ambient temperature, be connected without wire between system with computer, improve space availability ratio, reduce cost, data transmission is stable quickly, and can storage temperature data.
System has multi-point temperature measurement function, it is possible to measure the temperature value of multiple fixed point simultaneously, and multi-point temp DATA REASONING is to be realized by the extension of platinum resistance wire, have only to a set of temp measuring system, when point for measuring temperature increases, only need to increase platinum resistance quantity, effectively reduce system cost.
System passes through high-precision platinum resistor, accurate bridge for measuring temperature and have the single-chip microcomputer of 16 A/D translation functions data are changed, and by resolving and filter the high-acruracy survey realizing temperature, theoretical certainty of measurement can reach 0.002 DEG C.
Accompanying drawing explanation
Fig. 1 is based on the WIFI high accuracy multi-point temperature measurement system outside drawing communicated；
Fig. 2 temperature data acquisition module composition frame chart；
Fig. 3 single-chip minimum system module composition frame chart；
Fig. 4 WIFI communication module composition block diagram；
Fig. 5 is based on the WIFI high accuracy multi-point temperature measurement system theory diagram communicated；
Accompanying drawing labelling: 1-supply module, 2-temperature data acquisition module, 3-single-chip minimum system module, 4-WIFI communication module, 5-Pt1000 resistance, 6-bridge for measuring temperature circuit, 7-resistance, 8-constant pressure source, 9-voltage amplifier circuit, 10-Kinetis60 single-chip microcomputer, 11-clock circuit, 12-reset circuit, 13-JTAG interface circuit, 14-network service CPU, 15-SDRAM module, 16-UART interface.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further details.
It is an object of the invention to provide a kind of high accuracy multipoint temperature measuring system realized based on WIFI communication, the problem such as solve that current temperature measurement system wiring is complicated, system cannot realize multi-point temperature measurement and temperature measurement accuracy is relatively low.
The object of the present invention is achieved like this: a kind of high accuracy multi-point temperature measurement system based on WIFI communication, it is characterised in that: high accuracy multi-point temperature measurement system includes supply module 1, temperature data acquisition module 2, single-chip minimum system module 3, WIFI communication module 4 four part；Wherein, temperature data acquisition module 2 is made up of platinum resistance 5, favour stone bridge for measuring temperature circuit 6 and voltage amplifier circuit 9；Single-chip minimum system module 3 by having the single-chip microcomputer 10 of 16 A/D translation functions, clock circuit 11, reset circuit 12, JTAG debugging interface 13 form；WIFI communication module 4 is made up of network service CPU module 14, SDRAM module 15 and UART interface 16；Supply module 1 is connected with the temperature data acquisition module 2 in device, single-chip minimum system module 3, WIFI communication module 4 respectively, and powers for temperature data acquisition module 2, single-chip minimum system module 3, WIFI communication module 4；Temperature data acquisition module 2 is connected with single-chip minimum system module 3, and the temperature simulation voltage signal of measurement is transferred to single-chip minimum system module 3 processes；Single-chip minimum system module 3 is connected with WIFI communication module 4 by UART interface 16, and temperature simulation voltage signal is changed, resolves and filtered.
Being wirelessly transferred of temperature data is achieved in that: have the single-chip microcomputer 10 of 16 A/D translation functions and by UART interface 16, the temperature information after resolving is sent to WIFI module 4, the wireless network card of computer of WIFI module 4 and monitoring temperature information is connected by ICP/IP protocol and communicates, and use socket socket to solve two operating systems transmission data incompatibility problems, with digital quantity form, temperature information is sent to computer, and the temperature data received is displayed and stores by computer.
Multi-point temperature measurement function is achieved in that temperature data acquisition module 2 is made up of the temperature data acquisition circuit that multichannel is identical, and multi-point temp DATA REASONING is to be realized by the extension of multiple platinum resistance and wire thereof, have only to a set of temp measuring system, when point for measuring temperature increases, only need to increase platinum resistance quantity；The output signal of multi way temperature data acquisition circuit inputs to the different A/D ports in the single-chip microcomputer 10 with 16 A/D translation functions respectively, carries out data conversion and resolving respectively.
High precision measuring temperature is achieved in that the sensitive ambient temperature information of described platinum resistance 5 and is converted to resistance change signal, small voltage signal is converted to by favour stone bridge for measuring temperature circuit 6, transmit to the single-chip microcomputer 10 with 16 A/D translation functions after voltage amplifier circuit 9 amplifies, it is converted to temperature digital amount through 16 A/D, obtains high-precision temperature signal again through resolving and filtering.
The present invention relates to a kind of high accuracy multi-point temperature measurement system based on WIFI communication, including supply module 1, temperature data acquisition module 2, single-chip minimum system module 3 and WIFI communication module 4.Supply module 1 is temperature data acquisition module 2 respectively, single-chip minimum system module 3, WIFI communication module 4 is powered, wherein temperature data acquisition module 2 is made up of the temperature data acquisition circuit that multichannel is identical, the multi way temperature information that temperature data acquisition module 2 is measured sends to single-chip minimum system module 3 with voltage signal form, and carried out data resolving by single-chip minimum system module 3 respectively and be converted to temperature value, the temperature data obtained after resolving is transferred to WIFI module 4 by single-chip minimum system module 3, temperature data is transferred to computer by ICP/IP protocol by WIFI module 4, temperature information is displayed and preserves by computer.The present invention realizes the high accuracy of ambient temperature, multimetering, realizes the long range radio transmissions of temperature data simultaneously.
As shown in Fig. 1～Fig. 5, a kind of high accuracy multi-point temperature measurement system based on WIFI communication, whole system is by supply module 1, temperature data acquisition module 2, single-chip minimum system module 3, WIFI communication module 4 four part；Wherein, temperature data acquisition module 2 is made up of platinum resistance 5, favour stone bridge for measuring temperature circuit 6 and voltage amplifier circuit 9, and wherein platinum resistance 5 is preferably Pt1000 resistance；Single-chip minimum system module 3 by having the single-chip microcomputer 10 of 16 A/D translation functions, clock circuit 11, reset circuit 12, JTAG debugging interface 13 form, the single-chip microcomputer 10 wherein with 16 A/D translation functions is preferably Kinetis60 single-chip microcomputer；WIFI communication module 4 is made up of network service CPU module 14, SDRAM module 15 and UART interface 16；Supply module 1 is connected with the temperature data acquisition module 2 in device, single-chip minimum system module 3, WIFI communication module 4 respectively, and powers for temperature data acquisition module 2, single-chip minimum system module 3, WIFI communication module 4；Temperature data acquisition module 2 is connected with single-chip minimum system module 3, and the temperature simulation voltage signal of measurement is transferred to single-chip minimum system module 3 processes；Single-chip minimum system module 3 is connected with WIFI communication module 4 by UART interface 16, and temperature simulation voltage signal is changed, resolves and filtered.
Temperature data acquisition and the processing module 2 of the present invention are mainly made up of Pt1000 resistance 5, favour stone bridge for measuring temperature circuit 6, amplifying circuit 9.The sensitive variation of ambient temperature of Pt1000 resistance 5 also converts the resistance value signal proportional to ambient temperature to, and favour stone bridge for measuring temperature circuit 6 converts resistance value signal to voltage signal；But the very faint single-chip microcomputer None-identified of voltage signal of favour stone bridge for measuring temperature circuit 6 output, the present invention uses the voltage signal that bridge for measuring temperature 6 is exported by INA118 model operational amplifier to be amplified, and carries out changing, filter and resolving as the input signal of Kinetis60 single-chip microcomputer 10 using the voltage signal after amplification.
The voltage signal of input directly can be carried out A/D conversion as the ADC of built-in multiple 16 of core controller by the Kinetis60 single-chip microcomputer 10 that the present invention uses；The temperature measuring equipment temperature measurement accuracy theoretical value of the present invention can reach 0.002 DEG C.
WIFI communication module 4 is connected with Kinetis60 single-chip microcomputer 10 by UART interface 16, it is achieved the transmission of temperature data；Being provided with SDRAM module 15 in WIFI communication module 4 and can expand the memory headroom of network service CPU14, transmitted data amount is bigger.
Temperature information after resolving is sent to WIFI module 4 by UART interface 16 by Kinetis60 single-chip microcomputer 10, the wireless network card of WIFI module 4 and the computer of monitoring temperature information is set up to be connected in three-way handshake mode by ICP/IP protocol and is communicated, and use socket socket to solve two operating systems transmission data incompatibility problems, with digital quantity form, temperature information is sent to computer, and the temperature data received is displayed and stores by computer.Sent when data can solve to gather data by wireless and connect up difficult problem, and can monitoring of environmental temperature constantly, simultaneously can store the temperature value measured each time so that job demand, the waste of human resource problem caused when solving manual entry temperature value in the future.
The present invention possesses the multiple set point temperature functions of measurement: temperature data acquisition module 2 is made up of the temperature data acquisition circuit that multichannel is identical, and multi-point temp DATA REASONING is to be realized by the extension of platinum resistance and wire thereof, have only to a set of temp measuring system, when point for measuring temperature increases, only need to increase platinum resistance quantity；The output signal of multi way temperature data acquisition circuit inputs to the different A/D ports in Kinetis60 single-chip microcomputer 10 respectively, carries out data conversion and resolving respectively；According to Kinetis60 Chip Microcomputer A/D transfer capability it can be seen that 24 tunnel analogue signals can be changed at most by this single-chip microcomputer, therefore select the temp measuring system of Kinetis60 single-chip microcomputer can gather at most 24 road temperature informations.So can use same temperature measuring equipment, it is achieved measure the temperature information of multiple fixed point, reduce cost.
Claims (3)
1. the high accuracy multi-point temperature measurement system based on WIFI communication, it is characterised in that: include supply module (1), temperature data acquisition module (2), single-chip minimum system module (3) and WIFI communication module (4)；
Supply module (1) is connected with temperature data acquisition module (2), single-chip minimum system module (3), WIFI communication module (4) respectively, and is temperature data acquisition module (2), single-chip minimum system module (3), WIFI communication module (4) power supply；
Temperature data acquisition module (2) includes N number of temperature data acquisition circuit, and each temperature data acquisition circuit includes platinum resistance (5), favour stone bridge for measuring temperature circuit (6) and voltage amplifier circuit (9)；Single-chip minimum system module (3) includes the single-chip microcomputer (10) with 16 A/D translation functions and the clock circuit (11), reset circuit (12) and the JTAG debugging interface (13) that are connected with single-chip microcomputer (10)；WIFI communication module (4) includes network service CPU module (14), SDRAM module (15) and UART interface (16)；
The sensitive ambient temperature information of platinum resistance (5) is also converted to resistance change signal, small voltage signal is converted to by favour stone bridge for measuring temperature circuit (6), temperature simulation voltage signal is obtained after voltage amplifier circuit (9) amplifies, it is transferred to 16 A/D change-over circuits built-in in the single-chip microcomputer (10) with 16 A/D translation functions, it is converted to temperature digital amount through A/D, obtain temperature information again through resolving and filtering, be sent to network service CPU module (14) by UART interface (16)；Temperature information is transferred to computer by network service CPU module (14), and temperature information is displayed and preserves by computer.
2. a kind of high accuracy multi-point temperature measurement system based on WIFI communication according to claim 1, it is characterized in that: the wireless network card of computer of the network service CPU module (14) of WIFI communication module (4) and monitoring temperature information is connected by ICP/IP protocol and communicates, with digital quantity form, temperature information is sent to computer, and the temperature data received is displayed and stores by computer.
3. a kind of high accuracy multi-point temperature measurement system based on WIFI communication according to claim 1, it is characterised in that:
The output signal of N road temperature data acquisition circuit inputs to the different A/D ports in the single-chip microcomputer (10) with 16 A/D translation functions respectively, carries out data conversion and resolving respectively.
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Cited By (5)
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| RU2661459C2 (en) * | 2016-12-20 | 2018-07-16 | Общество с ограниченной ответственностью "Газпром трансгаз Казань" | Ambient air temperature measurement method |
| RU2661544C2 (en) * | 2016-12-20 | 2018-07-17 | Общество с ограниченной ответственностью "Газпром трансгаз Казань" | Ambient air temperature measurement unit |
| CN108613751A (en) * | 2018-07-02 | 2018-10-02 | 苏州市计量测试院 | A kind of high-precision and high-stability temperature polling instrument and preparation method thereof, method for inspecting |
| CN113670304A (en) * | 2021-07-01 | 2021-11-19 | 格物感知（深圳）科技有限公司 | Data transmission equipment and method capable of acquiring multiple paths of inertia measurement units |
| CN114483007A (en) * | 2022-01-23 | 2022-05-13 | 西南石油大学 | Non-invasive temperature measuring system in pipeline for thick oil exploitation |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2661459C2 (en) * | 2016-12-20 | 2018-07-16 | Общество с ограниченной ответственностью "Газпром трансгаз Казань" | Ambient air temperature measurement method |
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| CN114483007A (en) * | 2022-01-23 | 2022-05-13 | 西南石油大学 | Non-invasive temperature measuring system in pipeline for thick oil exploitation |
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