CN202092799U - Wireless temperature testing system - Google Patents
Wireless temperature testing system Download PDFInfo
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- CN202092799U CN202092799U CN2011202106572U CN201120210657U CN202092799U CN 202092799 U CN202092799 U CN 202092799U CN 2011202106572 U CN2011202106572 U CN 2011202106572U CN 201120210657 U CN201120210657 U CN 201120210657U CN 202092799 U CN202092799 U CN 202092799U
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- main control
- temperature acquisition
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Abstract
The utility model discloses a wireless temperature testing system which comprises a master control end, a wireless transceiver and at least one temperature collection end, wherein the at least one temperature collection end is used for acquiring measured temperature; the wireless transceiver consists of a master control end transceiver and a temperature acquisition end transceiver which can conduct wireless data transceiving, are respectively connected with a master control end and a temperature acquisition end and used for transmitting a control signal sent by the master control end to the temperature acquisition end and transmitting temperature data tested by the temperature acquisition end to the master control end; and the master control end is used for controlling work of the temperature acquisition end and conducting storage, analysis processing and displaying on the received temperature data acquired by the temperature acquisition end. The wireless temperature testing system adopts wireless data transmission, is applicable to various severe environment conditions, can randomly add measurement points, is convenient to install, avoid later wiring difficulty, and can conveniently determine temperature field data in a three-dimension space as the measurement points can be randomly arranged in the three-dimension space.
Description
Technical field
The utility model relates to a kind of distributed wireless temperature test system.
Background technology
Existingly temperature survey is carried out in the temperature field dual mode is generally arranged.
A kind of is to adopt the area array CCD method that the temperature field is measured, main common battle array colored CCD gamma camera and the image card of adopting obtains three kinds of visible light wave ranges red (R), green (G), blue (B) three-wavelength signal data, calculate according to certain formula then, obtain corresponding temperature value.The method that this employing optical principle is measured, be subject to such environmental effects (as smog, illumination, humidity etc.), three-dimensional temperature field is mapped to Two dimensional Distribution, can't determine the three dimensions Temperature Distribution, scope is limited to the video camera angular field of view, is subjected to restrictions such as partition wall, screen, extension angle.
Another kind is to adopt fieldbus to constitute sensor matrices to measure the temperature field, by using fieldbus (as RS232, RS485, LAN etc.) and each point of sensor matrices to carry out interconnected, by main control computer acquisition time each point temperature data, thereby realization is to the measurement of each point temperature in the temperature field.This method adopts bus to connect, be subjected to the bus driver capabilities limits, measurement point quantity and bus limited length, adopt bus to connect simultaneously, the wiring difficulty is big, restricted by field environmental condition, can not adapt to severe environmental conditions, measure dot number is difficult to increase and be provided with, and can not obtain complete three dimensions temperature field data, is not suitable for construction testing is carried out in existing temperature field.
Summary of the invention
The utility model provides a kind of wireless temperature test macro, overcome the shortcoming that prior art exists, reach and need not wiring, not restricted by field environmental condition, adapt to severe environmental conditions, measure dot number can increase arbitrarily and be provided with, and conveniently obtains complete three dimensions temperature field data, is fit to existing temperature field is carried out the purpose of construction testing.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of wireless temperature test macro comprises main control end, wireless transceiver, temperature acquisition end; Described temperature acquisition end is more than one, is used for the temperature survey collection; Described wireless transceiver is divided into two kinds of main control end transceiver and temperature acquisition end transceivers, can carry out the wireless receiving and dispatching of data each other, respectively with main control end with link to each other with the temperature acquisition end, be used for the control signal that main control end is sent is sent to the temperature acquisition end, and the measured temperature data of temperature acquisition end is sent to main control end; Described main control end is used for the work of temperature acquisition end is controlled, and to the temperature data of the temperature acquisition end collection that receives store, analyzing and processing, demonstration.
Described wireless transceiver is made up of wireless transmission chip and peripheral circuit, antenna, and the frequency of operation of wireless transmission chip is the 433MHz frequency range, and model is NRF401.
Described temperature acquisition end comprises digital temperature sensor and the controller that is connected with each other, described digital temperature sensor is used for temperature acquisition, the control signal control that its duty is sent by controller, described controller is connected with wireless transceiver, accept the control signal that main control end is sent by wireless transceiver, and the temperature data of temperature sensor collection is sent to main control end.Described digital temperature sensor model is DS18B20, and the controller of temperature acquisition end is a single-chip microcomputer.
Described main control end comprises PC, level shifting circuit; Described level shifting circuit links to each other with the main control end wireless transceiver with PC, the conversion between the Transistor-Transistor Logic level signal of realization wireless transceiver and the unlike signal level of PC interface circuit.Described PC interface is the RS232 interface, and described level shifting circuit is that chip, peripheral cell, the connector of MAX232 constitutes by model, and described connector is used for the connection between level shifting circuit and the PC interface.
The beneficial effects of the utility model:
1. adopt the wireless data transmission of 433MHz frequency range, be not subjected to factor affecting such as smog, illumination, humidity, partition wall, screen;
2. employing wireless mode, measure dot number can increase arbitrarily, not restricted by total line length, and is easy for installation, avoids later stage wiring difficulty, and distribution range only is subjected to transmission power limit;
3. employing wireless mode, measurement point can be placed arbitrarily at three dimensions, can conveniently determine three dimensions temperature field data.
Description of drawings
Fig. 1, structural representation of the present utility model;
Fig. 2, the radio transceiver circuitry schematic diagram;
Fig. 3, temperature acquisition end (containing temperature acquisition end transceiver) structural drawing;
Fig. 4, main control end (containing the main control end transceiver) structural drawing.
Fig. 5, the level shifting circuit schematic diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is further described:
The utility model adopts the distributed testing scheme, mainly contain functions such as multipoint temperature measuring, wireless transmission, data processing, storage, demonstration, main frame carries out data communication with the temperature acquisition terminal that is located at a plurality of measured node by wireless mode, constitute the wireless communications mode of point-to-multipoint, the temperature acquisition terminal sends back host side with the temperature information that measures by wireless mode after receiving the data or order that host side sends over.
As shown in Figure 1, a kind of wireless temperature test macro that this novel practical provides comprises main control end, wireless transceiver, temperature acquisition end; Described temperature acquisition end is more than one, is used for the temperature survey collection; Described wireless transceiver is divided into two kinds of main control end transceiver and temperature acquisition end transceivers, can carry out the wireless receiving and dispatching of data each other, respectively with main control end with link to each other with the temperature acquisition end, be used for the control signal that main control end is sent is sent to the temperature acquisition end, and the measured temperature data of temperature acquisition end is sent to main control end; Described main control end is used for the work of temperature acquisition end is controlled, and to the temperature data of the temperature acquisition end collection that receives store, analyzing and processing, demonstration.Main frame carries out data communication with the temperature acquisition terminal that is located at a plurality of measured node by wireless mode, constitutes the wireless communications mode of point-to-multipoint.The temperature acquisition terminal sends back host side with the temperature information that measures by wireless mode after receiving the data or order that host side sends over.
As shown in Figure 2, described wireless transceiver is made up of wireless transmission chip and peripheral circuit, antenna.The model of described wireless transmission chip is NRF401.
NRF401 is a kind of being widely used, and the wireless data sending chip that advantage is outstanding is operated in the ISM band of the 433MHz world with usefulness; The FSK modulation and demodulation, antijamming capability is strong; Adopt the PLL frequency synthesis technique, frequency stability is good; Sensitivity reaches+10dBm up to-105dBm maximum transmission power; Data rate can reach 20Kbit/s.
As shown in Figure 3, described temperature acquisition end comprises digital temperature sensor and the controller that is connected with each other, power by electric battery, described digital temperature sensor is used for temperature acquisition, the control signal control that its duty is sent by controller, described controller is connected with wireless transceiver, accepts the control signal that main control end is sent by wireless transceiver, and the temperature data of temperature sensor collection is sent to main control end.
The controller of temperature acquisition terminal is a single-chip microcomputer.
Require and the measurement environment security requirement according to systematic survey, in conjunction with the temperature sensor characteristics, the native system selection is anti-riot, the digital temperature sensor DS18B20 of electrostatic prevention encapsulation.
DS18B20 is the one-line digital temperature sensor that DALLAS company produces, and DS18B20 has the little encapsulation volume of 3 pin TO-92; Temperature measurement range is-55 ℃～+ 125 ℃, is programmed for 9～12 A/D conversion accuracies, and thermometric resolution can reach 0.0625 ℃, dut temperature 16 bit digital quantity mode serials of sign extended; CPU only needs a root port line just can communicate by letter with many DS18B20, and the port that takies microprocessor is less, can save a large amount of lead-in wires and logical circuit.
The DS18B20 digital thermometer provides 9 (scale-of-two) temperature readings, the temperature of indicating device, and the information via one-wire interface is sent into DS18B20 or is sent from DS18B20, therefore only needs a line (and ground wire) from the host CPU to DS18B20.The power supply of DS18B20 can be provided by data line itself and not need external power source.
Shown in Fig. 4,5, described main control end comprises PC, level shifting circuit; Described level shifting circuit links to each other with the main control end wireless transceiver with PC, the conversion between the Transistor-Transistor Logic level signal of realization wireless transceiver and the unlike signal level of PC interface circuit.
Described PC interface is the RS232 interface; Described level shifting circuit is that chip, peripheral cell, the connector of MAX232 constitutes by model, and described connector is used for the connection between level shifting circuit and the PC interface.
Adopt asynchronous communication means between PC and the main control end transceiver, use and receive data line RXD, send data line TXD and request transmission line RTS, wherein when the PC of main control end is wanted transceive data, RTS is effective, main control end is to temperature acquisition end request transceive data, TXD sends to the temperature acquisition end by transceiver with serial data, and RXD receives the serial data that the temperature acquisition end sends by transceiver.5 pin of connector are signal ground, with system board altogether.
Claims (9)
1. a wireless temperature test macro is characterized in that: comprise main control end, wireless transceiver, temperature acquisition end; Described temperature acquisition end is more than one, is used for the temperature survey collection; Described wireless transceiver is divided into two kinds of main control end transceiver and temperature acquisition end transceivers, can carry out the wireless receiving and dispatching of data each other, respectively with main control end with link to each other with the temperature acquisition end, be used for the control signal that main control end is sent is sent to the temperature acquisition end, and the measured temperature data of temperature acquisition end is sent to main control end; Described main control end is used for the work of temperature acquisition end is controlled, and to the temperature data of the temperature acquisition end collection that receives store, analyzing and processing, demonstration.
2. a kind of wireless temperature test macro according to claim 1 is characterized in that: described wireless transceiver is made up of wireless transmission chip and peripheral circuit, antenna.
3. a kind of wireless temperature test macro according to claim 2 is characterized in that: the frequency of operation of described wireless transmission chip is the 433MHz frequency range.
4. a kind of wireless temperature test macro according to claim 3 is characterized in that: the employing model of described wireless transmission chip is the chip of NRF401.
5. according to claim 1,2,3 or 4 described a kind of wireless temperature test macros, it is characterized in that: described temperature acquisition end comprises digital temperature sensor and the controller that is connected with each other, described digital temperature sensor is used for temperature acquisition, the control signal control that its duty is sent by controller, described controller is connected with wireless transceiver, accept the control signal that main control end is sent by wireless transceiver, and the temperature data of temperature sensor collection is sent to main control end.
6. a kind of wireless temperature test macro according to claim 5 is characterized in that: the model that described digital temperature sensor adopts DALLAS company to produce is the one-line digital temperature sensor of DS18B20, and described controller is a single-chip microcomputer.
7. according to claim 1,2,3,4 or 6 described a kind of wireless temperature test macros, it is characterized in that: described main control end comprises PC, level shifting circuit; Described level shifting circuit links to each other with the main control end wireless transceiver with PC, the conversion between the Transistor-Transistor Logic level signal of realization wireless transceiver and the unlike signal level of PC interface circuit.
8. a kind of wireless temperature test macro according to claim 5, it is characterized in that: described main control end comprises PC, level shifting circuit; Described level shifting circuit links to each other with the main control end wireless transceiver with PC, the conversion between the Transistor-Transistor Logic level signal of realization wireless transceiver and the unlike signal level of PC interface circuit.
9. a kind of wireless temperature test macro according to claim 8 is characterized in that: described PC interface is the RS232 interface; Described level shifting circuit is that chip, peripheral cell, the connector of MAX232 constitutes by model, and described connector is used for the connection between level shifting circuit and the PC interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202106572U CN202092799U (en) | 2011-06-21 | 2011-06-21 | Wireless temperature testing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202106572U CN202092799U (en) | 2011-06-21 | 2011-06-21 | Wireless temperature testing system |
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| CN202092799U true CN202092799U (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202106572U Expired - Fee Related CN202092799U (en) | 2011-06-21 | 2011-06-21 | Wireless temperature testing system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589722A (en) * | 2012-02-23 | 2012-07-18 | 天津工业大学 | Temperature detection system |
| CN102917473A (en) * | 2012-10-16 | 2013-02-06 | 上海理工大学 | Wireless illuminometer |
| CN103411693A (en) * | 2013-08-16 | 2013-11-27 | 辽宁意思德电气有限公司 | SVG power cabinet on-line automatic tracking wireless temperature measurement system |
| CN108426647A (en) * | 2018-03-13 | 2018-08-21 | 山东超越数控电子股份有限公司 | A kind of regional temperature distribution estimating and measuring method based on wireless sensor network node |
| CN110967121A (en) * | 2019-12-12 | 2020-04-07 | 大连大学 | Matrix type three-dimensional temperature test monitoring system |
-
2011
- 2011-06-21 CN CN2011202106572U patent/CN202092799U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102589722A (en) * | 2012-02-23 | 2012-07-18 | 天津工业大学 | Temperature detection system |
| CN102917473A (en) * | 2012-10-16 | 2013-02-06 | 上海理工大学 | Wireless illuminometer |
| CN103411693A (en) * | 2013-08-16 | 2013-11-27 | 辽宁意思德电气有限公司 | SVG power cabinet on-line automatic tracking wireless temperature measurement system |
| CN108426647A (en) * | 2018-03-13 | 2018-08-21 | 山东超越数控电子股份有限公司 | A kind of regional temperature distribution estimating and measuring method based on wireless sensor network node |
| CN110967121A (en) * | 2019-12-12 | 2020-04-07 | 大连大学 | Matrix type three-dimensional temperature test monitoring system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20120621 |