CN203132723U - Wireless integrated temperature transmitter - Google Patents
Wireless integrated temperature transmitter Download PDFInfo
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- CN203132723U CN203132723U CN 201320004313 CN201320004313U CN203132723U CN 203132723 U CN203132723 U CN 203132723U CN 201320004313 CN201320004313 CN 201320004313 CN 201320004313 U CN201320004313 U CN 201320004313U CN 203132723 U CN203132723 U CN 203132723U
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Abstract
Disclosed in the utility model is a wireless integrated temperature transmitter. A display (5) and a 3.3-V power supply (6) are installed at two large openings of a four-way housing (1); and a WIAPA-M1800 wireless adapter (3) and a main controller (4) are installed inside the four-way housing (1). A K type thermocouple or PT 100 thermal resistor (2) and a wireless antenna (7) are installed at two small openings of the four-way housing (1); the K type thermocouple or PT 100 thermal resistor (2) is connected with the WIAPA-M1800 wireless adapter (3) by a signal line; and the WIAPA-M1800 wireless adapter (3) is connected with the main controller (4) by a pin; and the display (5) is connected with the main controller (4) by a pin. Therefore, the whole components form a temperature transmitter. According to the utility model, temperature data are accurately collected by a software table searching way and are uploaded in real time. Therefore, low power consumption is realized based on meeting of the industrial measuring range and precision requirements; and parameters can be adjusted in real time.
Description
Technical field
The utility model relates to transmitter, is specifically related to a kind of wireless integrative temperature transmitter based on the WIA network.
Background technology
Temperature is one of parameter common and the most basic in the commercial production, and the people's life and the temperature of environment are closely bound up, often needs in process of production temperature is detected in real time and monitors.Also be unable to do without the measurement of temperature in agricultural production, measuring method and the device of therefore studying temperature have great importance.The key of measuring temperature is temperature sensor, and three developing stage have been experienced in the development of temperature sensor: 1. traditional discrete temperature sensor, 2. simulate integrated temperature sensor, 3. intelligent integrated temperature sensor.At present, in the world temperature sensor just from analog to digital, from integrated to intelligent, networked direction develop rapidly.
70～eighties of last century, the wireless industrial technology still is a kind of simple means of communication, is purpose as the additional of cable technology with the data transmission that solves long distance, can realize point-to-point, point-to-multipoint delivery.In order to realize ubiquitous perception, promote the industrial measurement and control mode for reforming beginning of this century, and information is retrieved as purpose to solve cheaply, and the wireless industrial technology begins to realize large scale networkization.
At industrial circle, with respect to cable network, wireless sensor network has numerous advantages such as low cost, dirigibility, movability, and this provides the feasibility of technical support and realization to those occasions that are not suitable for line.But at industrial circle, the application of wireless sensor network still is in the starting stage, and the principal element of restriction wireless sensor network comprises energy consumption, real-time and security etc.
Summary of the invention
The purpose of this utility model is: wireless integrative temperature transmitter is provided, temperature-measurement principle according to active differential voltage temperature transmitter, binding signal modulate circuit and high-precision adc spare, download the accurate collecting temperature data of mode of dividing kilsyth basalt to table look-up with software from long-range host computer by the WIA network, and data in real time uploaded, utilize self power consumption control characteristic and peripheral analog switching circuit simultaneously, make whole instrument that the energy consumption performance be arranged preferably, low-power consumption on the basis of satisfying commercial measurement scope and accuracy requirement, adjust parameter in real time.
Technical solution of the present utility model is: this temperature transmitter comprises the four-way shell, K type thermopair, the PT100 thermal resistance, the WIAPA-M1800 wireless adapter, master controller, display, 3.3V power supply and wireless antenna, two big opening parts at the four-way shell are installed display and 3.3V power supply, in the four-way enclosure WIAPA-M1800 wireless adapter and master controller are installed, at two smaller opening places of four-way shell K type thermopair is installed, PT100 thermal resistance and wireless antenna, K type thermopair, the PT100 thermal resistance connects on the WIAPA-M1800 wireless adapter by signal wire, the WIAPA-M1800 wireless adapter connects master controller by contact pin again, display connects master controller by contact pin, whole formation temperature transmitter.
During installation, at the point for measuring temperature place of commercial unit this temperature transmitter is installed, the WIA gateway is installed in the WIA network coverage, link to each other with host computer by RS-485 bus or Ethernet; During work, host computer downloads to temperature transmitter with the calibration parameter of correspondence by HART protocol bus interface, and master controller is saved to calibration parameter in the external storage; The temperature at thermopair, the direct contact measurement point for measuring temperature of thermal resistance place, by signal conditioning circuit to voltage signal amplify, impedance matching, denoising handle, by A/D analog voltage signal is converted to digital signal again, master controller is inquired about calculating with the scale division meter data of storing among digital signal and the inner FLASH, obtain temperature value accurately, and data in real time is uploaded and is presented on the display.
The utlity model has following advantage:
1, WIAPA-M1800 wireless adapter and master controller all use MSP430 model single-chip microcomputer, carry out communication by serial ports between the two.
2, display adopts the liquid-crystalline glasses material of 128 sections, and master controller drives it by HT1621.
3, the utility model volume is little, and is in light weight, integrated, visual, real-time, easy to install.
4, modulus conversion chip adopts 16 A/D, makes the gamma correction acquisition precision of K type thermopair and PT100 thermal resistance more than ‰ grade.
5, master controller adopts 16 MSP430 microprocessors of high-performance super low-power consumption, binding signal modulate circuit, mu balanced circuit, anti-jamming circuit and on-off circuit, and whole instrument has lower power consumption and advantages of higher stability.
That 6, thermopair is exported is transformed to the collectable normal voltage signal of A/D device with thermal resistance via the millivolt magnitude voltage signals that electric bridge produces, transmitter is based on intelligent wireless network WIA technical system, meet IEEE 802.15.4 wireless communication standard, the radio communication of information between main equipment oriented, be particularly suitable for using at abominable industry spot environment, have very strong antijamming capability.
7, according to temperature parameter common in the commercial Application, adopt K type thermopair, realize wide range, low-power consumption, this temperature transmitter can right-50 ℃ ~ 900 ℃ temperature range be measured, 0.25 ℃ of measuring accuracy by changing temperature-sensing element, can be adjusted the measurement range of transmitter.
8, the intelligent wireless network WIA technology that relates to is based on short-distance wireless communication IEEE 802.15.4 standard, use meets the free frequency band of Chinese the Radio Management Commission regulation, the various large-scale apparatus that spreads all under the solution rugged surroundings, metallic conduit etc. are to the reflection of wireless signal, the multipath effect that scattering causes, and produce electromagnetic noise to the interference of radio communication during the running of motor, apparatus, highly reliable, the real-time radio communication service that can satisfy application demand are provided.
9, by using intelligent wireless network WIA technology, the user realizes full-range " ubiquitous perception " with lower investment and cost, obtain tradition owing to the cost reason can't on-line monitoring the significant process parameter, and implement optimal control based on this, reach the target of improving the quality of products and saving energy and reduce the cost.
10, the utility model can use under the industrial and mineral of complexity, solve the difficult problem of wiring, and signal stabilization is reliable.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the main controller circuit schematic diagram.
Fig. 3 is the amplifier circuit schematic diagram.
Fig. 4 is I
2C interface and power circuit principle figure.
Fig. 5 is thermal resistance bridge circuit schematic diagram.
Among the figure: 1 shell, 2 K type thermoelectricity are the PT100 thermal resistance occasionally, 3WIAPA-M1800 wireless adapter, 4 master controllers, 5 displays, 6 3.3V power supplys, 7 days wire antennas.
Embodiment
As shown in Figure 1, this temperature transmitter comprises four-way shell 1, K type thermoelectricity is PT100 thermal resistance 2 occasionally, WIAPA-M1800 wireless adapter 3, master controller 4, display 5,3.3V power supply 6 and wireless antenna 7, two big opening parts at four-way shell 1 are installed display 5 and 3.3V power supply 6, at four-way shell 1 inner WIAPA-M1800 wireless adapter 3 and the master controller 4 installed, K type thermoelectricity occasionally PT100 thermal resistance 2 and wireless antenna 7 are installed at 1 two smaller opening places of four-way shell, K type thermoelectricity occasionally PT100 thermal resistance 2 connects on the WIAPA-M1800 wireless adapter 3 by signal wire, WIAPA-M1800 wireless adapter 3 connects master controller 4 by contact pin again, display 5 connects master controller 4 by contact pin, whole formation temperature transmitter.
As shown in Figure 2, TPS62203 is the DC-DC conversion chip of texas,U.S electric corporation, realizes that the voltage standard of 3.6V to 3.3V is changed, and carries out switch control by the power supply of the peripheral circuit of MCU; ADS1110 is the A/D chip of texas,U.S electric corporation, adopts I
2The interface of C form, the low-noise programmable amplifier of built-in 1 ~ 8 gain amplifies voltage signal and to handle and sampling is converted into digital signal; The digital signal of the A/D output of MSP430F149 is handled, computation of table lookup goes out temperature, gather environment temperature by inner 12 AD and carry out temperature compensation, gather (AVcc-AVss)/2 and realize the detection of battery electric quantity, communicate by letter with wireless module by serial ports, the result who collects is uploaded PC and other real-time Communication for Power, simultaneously with real time temperature data and battery electric quantity indicated number on LCD screen, by timer internal mode of operation is switched and to be carried out energy consumption control; The resistance variations that the thermal resistance temperature influence takes place the thermal resistance electric bridge is converted into the variation of voltage;
LTC2053 is LINEAR company precision amplifier, to the millivolt level signal of thermopair collection amplify, filtering, impedance matching; Required correction parameter in the AT24LC64 storing temperature computation process; HT1621b shows temperature and the temperature under the current environment of place and the pilot cell electric weight of the point for measuring temperature that thermopair is gathered; The data that WIA-M8000 gathers send to the WIAPA-M1800 wireless communication module by serial ports, insert the WIAPA-GW1498 radio network gateway again, on long-range PC, data are shown, to be sent to MCU through this wireless module corresponding to the branch kilsyth basalt of each probe by PC when using for the first time in system simultaneously, be kept in the external memory storage.
Wherein, physical circuit connects as follows:
Power supply: 3.6V lithium battery power supply, master controller uses 3.6V to change 3.3V gate-controlled switch chip and provides required power supply to simulation part and numerical portion, 5 pin of power supply chip TPS62203 link to each other with an end of inductance L 1, the other end of L1 links to each other with 4 pin, shunt capacitance C3, the 3.3V output terminal of TPS62203, shunt capacitance C2, C3 are respectively 4.7uF, 10Uf, and L1 is 10uH;
K type thermopair: 6 pin of the output cathode XZ1 of thermopair link to each other with π type filter capacitor C1, filter capacitor C3, protective resistance R3, another pin of C1 links to each other with 4 pin, filter capacitor C2, the protective resistance R2 of thermopair output negative pole XZ1, filter capacitor C2, another pin ground connection of C3, C1, C2, C3 are 0.1uF;
The thermal resistance electric bridge: the PT100 thermal resistance adopts the three-wire system connection, 3 pin of the anodal XZ1 of thermal resistance link to each other with balance resistance R6, π type filter capacitor C1, filter capacitor C3, protective resistance R3, another termination 3.3V power supply of R6, the 7 pin ground connection of one road negative pole XZ1 of thermal resistance, 5 pin of another road negative pole XZ1 of thermal resistance link to each other with the end of variable resistor RP1, the sliding end of RP1 links to each other with the other end, link to each other with an end, filter capacitor C2, the protective resistance R2 of balance resistance R5 again, another pin ground connection of filter capacitor C2, C3, the other end of R5 is connected to the 3.3V power supply;
16 A/D: be the ADS1110 chip of texas,U.S electric corporation, adopt I
2The interface of C form, 1 pin of ADS1110 is connected with C6 with RC wave filter R4,3 pin of ADS1110,4 pin link to each other with P5.3, the P5.4 pin of pull-up resistor R20, R21, MSP430,5 pin of the other end of R20, R21 and ADS1110 are connected with+3.3V power supply, 2 pin of ADS1110 and 6 pin ground connection, and the shunt capacitance of ADS1110 power supply is C5, R4 is 1K Ω, C6 is 4.7uF, and C5 is 0.1uF, and R20, R21 are 10k Ω;
MCU: the MSP430F149 chip of selecting the texas,U.S electric corporation for use, crystal oscillator is selected 32.768kHz for use, program is downloaded use standard 14 pin jtag interfaces, 54,55,56,57,58 pin of MCU link to each other with 14,12,10,8,4 pin of double cab XZ3 respectively, the P2.0 of MCU, P2.1, P2.2, P2.3 pin link to each other with 4,5,6,3 pin of XZ2 respectively, the P3.4 of MCU, P3.5 pin link to each other with 9,10 pin of XZ1, and shunt capacitance C8, C9 are 0.1uF;
Amplifier circuit: the positive pole of thermopair is connected with the end of protective resistance R3, the other end of R3 is connected with the in-phase input end of amplifier LTC2053, the inverting input of LTC2053 is connected with the end of protective resistance R2,1 pin of LTC2053 and 4 pin ground connection, 5 pin of LTC2053 link to each other with the sliding end of variable resistor Radj1, two termination 3.3V power supplys in addition and the ground of Radj1, the end of the 6 pin connecting resistance R1 of LTC2053, the sliding end of variable resistor Radj1, the end of feedback capacity C4, the other end ground connection of R1,7 pin of another termination LTC2053 of Radj1 and C4 and the end of RC wave filter R4, the other end ground connection of RC wave filter C6,8 pin of LTC2053 connect the 3.3V power supply, and shunt capacitance is C5, R2, R3 is 10k Ω, C4 is 0.1uF, and Radj2 is adjusted to 510 Ω, and C5 is 0.1uF;
Eeprom memory: sheet external memory chip is selected the 24LC64 chip of MicroChip company for use, adopts I
2C interface, by the power supply of 3.3V power supply, 5,6 pin of 24LC64 link to each other with P5.3, the P5.4 mouth of MCU by R20, R21 pull-up resistor, and C6 is used for bypass filtering, and 1 pin of 24LC64 connects high level, and 2,3, the 4 pin ground connection of 24LC64 are used for indicant reason address.
Display: the 48 pin HT1621B that are the spi bus structure drive LCD screen, wherein SEG0 ~ SEG23 and COM0 ~ COM3 totally 24 pin be connected with liquid-crystalline glasses, the DATA pin connects an end that draws resistance R 52 and is connected with the P2.1 mouth of MCU, the CS pin connects an end that draws resistance R 53 and is connected with the P2.0 mouth of MCU, the WR pin connects an end that draws resistance R 54 and is connected with the P2.2 mouth of MCU, the RD pin connects an end that draws resistance R 55 and is connected with the P2.3 mouth of MCU, pull-up resistor R52, R53, R54, the other end of R55 is connected with VDD, be connected the R51 variable resistor between VDD and the VLCD pin, VDD and VSS are connected 3.6V power supply and the ground wire on the master controller respectively, all the other pin are unsettled, R52, R53, R54, R55 is 10k Ω;
The P3.4 of radio communication: MCU, P3.5 mouth link to each other with the serial interface of WIAPA-M1800 wireless communication module.
Claims (2)
1. wireless integrative temperature transmitter, it is characterized in that: this temperature transmitter comprises four-way shell (1), K type thermoelectricity is PT100 thermal resistance (2) occasionally, WIAPA-M1800 wireless adapter (3), master controller (4), display (5), 3.3V power supply (6) and wireless antenna (7), two big opening parts at four-way shell (1) are installed display (5) and 3.3V power supply (6), at inner WIAPA-M1800 wireless adapter (3) and the master controller (4) installed of four-way shell (1), K type thermoelectricity occasionally PT100 thermal resistance (2) and wireless antenna (7) are installed at (1) two smaller opening place of four-way shell, K type thermoelectricity occasionally PT100 thermal resistance (2) connects on the WIAPA-M1800 wireless adapter (3) by signal wire, WIAPA-M1800 wireless adapter (3) connects master controller (4) by contact pin again, display (5) connects master controller (4) by contact pin, whole formation temperature transmitter.
2. wireless integrative temperature transmitter according to claim 1 is characterized in that described temperature becomes the physical circuit that send product and connects as follows:
Power supply: 3.6V lithium battery power supply, master controller uses 3.6V to change 3.3V gate-controlled switch chip and provides required power supply to simulation part and numerical portion, 5 pin of power supply chip TPS62203 link to each other with an end of inductance L 1, the other end of L1 links to each other with 4 pin, shunt capacitance C3, the 3.3V output terminal of TPS62203, shunt capacitance C2, C3 are respectively 4.7uF, 10Uf, and L1 is 10uH;
K type thermopair: 6 pin of the output cathode XZ1 of thermopair link to each other with π type filter capacitor C1, filter capacitor C3, protective resistance R3, another pin of C1 links to each other with 4 pin, filter capacitor C2, the protective resistance R2 of thermopair output negative pole XZ1, filter capacitor C2, another pin ground connection of C3, C1, C2, C3 are 0.1uF;
The thermal resistance electric bridge: the PT100 thermal resistance adopts the three-wire system connection, 3 pin of the anodal XZ1 of thermal resistance link to each other with balance resistance R6, π type filter capacitor C1, filter capacitor C3, protective resistance R3, another termination 3.3V power supply of R6, the 7 pin ground connection of one road negative pole XZ1 of thermal resistance, 5 pin of another road negative pole XZ1 of thermal resistance link to each other with the end of variable resistor RP1, the sliding end of RP1 links to each other with the other end, link to each other with an end, filter capacitor C2, the protective resistance R2 of balance resistance R5 again, another pin ground connection of filter capacitor C2, C3, the other end of R5 is connected to the 3.3V power supply;
16 A/D: be the ADS1110 chip of texas,U.S electric corporation, adopt I
2The interface of C form, 1 pin of ADS1110 is connected with C6 with RC wave filter R4,3 pin of ADS1110,4 pin link to each other with P5.3, the P5.4 pin of pull-up resistor R20, R21, MSP430,5 pin of the other end of R20, R21 and ADS1110 are connected with+3.3V power supply, 2 pin of ADS1110 and 6 pin ground connection, and the shunt capacitance of ADS1110 power supply is C5, R4 is 1K Ω, C6 is 4.7uF, and C5 is 0.1uF, and R20, R21 are 10k Ω;
MCU: the MSP430F149 chip of selecting the texas,U.S electric corporation for use, crystal oscillator is selected 32.768kHz for use, program is downloaded use standard 14 pin jtag interfaces, 54,55,56,57,58 pin of MCU link to each other with 14,12,10,8,4 pin of double cab XZ3 respectively, the P2.0 of MCU, P2.1, P2.2, P2.3 pin link to each other with 4,5,6,3 pin of XZ2 respectively, the P3.4 of MCU, P3.5 pin link to each other with 9,10 pin of XZ1, and shunt capacitance C8, C9 are 0.1uF;
Amplifier circuit: the positive pole of thermopair is connected with the end of protective resistance R3, the other end of R3 is connected with the in-phase input end of amplifier LTC2053, the inverting input of LTC2053 is connected with the end of protective resistance R2,1 pin of LTC2053 and 4 pin ground connection, 5 pin of LTC2053 link to each other with the sliding end of variable resistor Radj1, two termination 3.3V power supplys in addition and the ground of Radj1, the end of the 6 pin connecting resistance R1 of LTC2053, the sliding end of variable resistor Radj1, the end of feedback capacity C4, the other end ground connection of R1,7 pin of another termination LTC2053 of Radj1 and C4 and the end of RC wave filter R4, the other end ground connection of RC wave filter C6,8 pin of LTC2053 connect the 3.3V power supply, and shunt capacitance is C5, R2, R3 is 10k Ω, C4 is 0.1uF, and Radj2 is adjusted to 510 Ω, and C5 is 0.1uF;
Eeprom memory: sheet external memory chip is selected the 24LC64 chip of MicroChip company for use, adopts I
2C interface, by the power supply of 3.3V power supply, 5,6 pin of 24LC64 link to each other with P5.3, the P5.4 mouth of MCU by R20, R21 pull-up resistor, and C6 is used for bypass filtering, and 1 pin of 24LC64 connects high level, and 2,3, the 4 pin ground connection of 24LC64 are used for indicant reason address;
Display: the 48 pin HT1621B that are the spi bus structure drive LCD screen, wherein SEG0 ~ SEG23 and COM0 ~ COM3 totally 24 pin be connected with liquid-crystalline glasses, the DATA pin connects an end that draws resistance R 52 and is connected with the P2.1 mouth of MCU, the CS pin connects an end that draws resistance R 53 and is connected with the P2.0 mouth of MCU, the WR pin connects an end that draws resistance R 54 and is connected with the P2.2 mouth of MCU, the RD pin connects an end that draws resistance R 55 and is connected with the P2.3 mouth of MCU, pull-up resistor R52, R53, R54, the other end of R55 is connected with VDD, be connected the R51 variable resistor between VDD and the VLCD pin, VDD and VSS are connected 3.6V power supply and the ground wire on the master controller respectively, all the other pin are unsettled, R52, R53, R54, R55 is 10k Ω;
The P3.4 of radio communication: MCU, P3.5 mouth link to each other with the serial interface of WIAPA-M1800 wireless communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320004313 CN203132723U (en) | 2013-01-06 | 2013-01-06 | Wireless integrated temperature transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320004313 CN203132723U (en) | 2013-01-06 | 2013-01-06 | Wireless integrated temperature transmitter |
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| Publication Number | Publication Date |
|---|---|
| CN203132723U true CN203132723U (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320004313 Expired - Fee Related CN203132723U (en) | 2013-01-06 | 2013-01-06 | Wireless integrated temperature transmitter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871219A (en) * | 2014-03-14 | 2014-06-18 | 江苏红光仪表厂有限公司 | Voltage signal wireless transmission device |
| CN113204259A (en) * | 2021-04-28 | 2021-08-03 | 武汉大学 | APD bias voltage module with temperature compensation function |
-
2013
- 2013-01-06 CN CN 201320004313 patent/CN203132723U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103871219A (en) * | 2014-03-14 | 2014-06-18 | 江苏红光仪表厂有限公司 | Voltage signal wireless transmission device |
| CN113204259A (en) * | 2021-04-28 | 2021-08-03 | 武汉大学 | APD bias voltage module with temperature compensation function |
| CN113204259B (en) * | 2021-04-28 | 2022-05-17 | 武汉大学 | APD bias voltage module with temperature compensation function |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20150106 |
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| EXPY | Termination of patent right or utility model |