CN203629700U - Wireless temperature measuring device - Google Patents
Wireless temperature measuring device Download PDFInfo
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- CN203629700U CN203629700U CN201320728322.9U CN201320728322U CN203629700U CN 203629700 U CN203629700 U CN 203629700U CN 201320728322 U CN201320728322 U CN 201320728322U CN 203629700 U CN203629700 U CN 203629700U
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- temperature
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- measuring device
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- 239000000523 sample Substances 0.000 claims abstract description 25
- 239000013078 crystal Substances 0.000 claims abstract description 14
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 7
- 239000004973 liquid crystal related substance Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 3
- 230000006855 networking Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 description 7
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- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 206010019233 Headaches Diseases 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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- 238000007639 printing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 238000004861 thermometry Methods 0.000 description 1
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Abstract
The utility model discloses a wireless temperature measuring device. Temperature measuring sensors are connected to transponders via a 433MHz wireless channel, and the transponders are connected to an industrial control computer via RS485 interfaces. Each temperature measuring sensor comprises a temperature measuring probe, a high-temperature-resistant lithium battery, a first crystal oscillator, a first watchdog circuit and a first radiofrequency (RF) circuit which are connected with a first wireless single-chip microcomputer, as well as a first antenna connected with the first RF circuit; and each transponder comprises the RS485 interface, a power supply module, a second crystal oscillator, a second watchdog circuit and a second RF circuit which are connected with a second wireless single-chip microcomputer, as well as a second antenna connected to the second RF circuit. The wireless temperature measuring device can collect, wirelessly transmit, store, send and monitor the real-time temperatures of electric devices at a high temperature, the temperatures of multiple electrical devices can be monitored, the automation degree is high; and the anti-interference capability is strong, the service life of batteries is long, networking is flexible and rapid, installation is convenient, and the sensors need no maintenance in the service periods.
Description
Technical field
The utility model relates to electric system electrical equipment monitoring field, is specifically a kind of wireless temperature measuring device.
Background technology
If the high-tension apparatuses such as high-tension switch cabinet are in long-time running, easily there is surface oxidation in electrical equipment, bolt looseness, and contact and busbar junction are aging, cause temperature rise too high, cause major accident.Aborning, because of the overheated accident causing of electrical equipment tie point, account for the significant proportion of piece electrical accident, as do not found in time, this accident potential will bring great threat to safe power supply.For scenting a hidden danger in time, avoid the generation of accident, must be to electrical equipment each tie point real time temperature on-line real time monitoring and intelligent alarm.For a long time, the joint running temperature of high-tension apparatus is difficult to monitoring, and this is that common thermometry can not be used because solving High-Voltage Insulation problem because these positions all have exposed high pressure.Conventionally adopt at present fiber optic temperature device to carry out high pressure thermometric, fiber optic temperature detects Fibre Optical Sensor is installed on high-tension apparatus, the characteristic parameter that utilizes the light wave transmitting in optical fiber to external world temperature has sensitivity characteristic and measures temperature, has fundamentally solved the problem of High-Voltage Insulation.But Laser Power Devices high cost, causes in prior art the fiber optic temperature installation cost for high-tension apparatus being carried out to thermometric higher.In addition, in the plant stand of electric system, the lead contact of electrical equipment is more, and tens is thousands of at most at least; To the work of time-consuming, the effort of the headache of operating management department especially of the temperature detection of outdoor lead contact.Current adopted discolor temp measuring adhesive sheet or infrared thermometer detect, and its effect is because being subject to the impact of testee surface configuration and stained degree very large.The a large amount of manpowers of this dependence detect certain limitation, and automaticity is not high, the more important thing is in cabinet and the heating situation of the electrical equipment of unattended substation can not be found in time, have great accident potential.
Utility model content
The purpose of this utility model is to provide a kind of wireless temperature measuring device, adopts this device, can realize the collection of electrical equipment high temperature real time temperature, wireless transmission, storage, transmission.
The technical scheme that realizes the utility model object is as follows: a kind of wireless temperature measuring device, comprise temperature probe, transponder and industrial computer, described temperature probe is connected to transponder by 433MHz wireless channel, and transponder is connected to industrial computer by RS485 interface.Wherein, temperature probe comprises and is connected respectively to the temperature probe of the first wireless singlechip, high temperature resistant lithium battery, first crystal oscillator, the first watchdog circuit and the first radio circuit, also comprises the first antenna that is connected to the first radio circuit; Described transponder comprises the RS485 interface, power module, the second crystal oscillator, the second watchdog circuit and the second radio circuit that are connected respectively to the second wireless singlechip, also comprises the second antenna that is connected to the second radio circuit.According to the needs of practical application, transponder also comprises the liquid crystal display that is connected to the second wireless singlechip, and transponder also comprises the relay that is connected to the second wireless singlechip.
In technique scheme, the model of described the first wireless singlechip and the second wireless singlechip is CC1110, the frequency of described first crystal oscillator and the second crystal oscillator is 26MHz, the model of described temperature probe is AD7814, the model of described high temperature resistant lithium battery is TLH4902, the chip model that described RS485 interface adopts is MAX13487, the model of described power module is SPS-30C-5, the chip model that described the second watchdog circuit adopts is MAX706, and described Panel Type is FYD12864.
Technique effect of the present utility model is, has realized the collection of electrical equipment high temperature real time temperature, wireless transmission, storage, transmission and monitoring, on computer backstage, can monitor multiple electrical equipment temperatures, and automaticity is high; System rejection to disturbance ability is strong, battery is long, networking flexibility is quick, easy for installation, sensor length of life is non-maintaining.
Accompanying drawing explanation
Fig. 1 is system construction drawing of the present utility model.
Fig. 2 is the circuit diagram of the temperature probe of an embodiment of the utility model.
Fig. 3 is the circuit diagram of the transponder of an embodiment of the utility model.
Embodiment
As shown in Figure 1, wireless temperature measuring device comprises temperature probe, transponder and industrial computer.Temperature probe is arranged on to be needed, on the electrical equipment of thermometric monitoring point, to be connected to transponder to communicate by letter with it by 433MHZ wireless channel, sends the data to transponder, and a transponder can receive the data of multiple temperature probes.Between temperature probe and transponder, use self-defining communication protocol, in the situation that meeting normal thermometric requirement, saved to greatest extent power consumption, with the designed life that guarantees to reach 12 years.Transponder is arranged on the position of switch cabinet instrument room or the relatively good observation of electrical equipment, according to actual needs, liquid crystal display can also be set, and temperature value, alarm limit value, alarm status, signal intensity etc. are presented in real time on liquid crystal display and are observed for staff.Transponder is connected to industrial computer by RS485 interface, and industrial computer reads the temperature of transponder inner buffer by Modbus rtu protocol, for directly perceived demonstration, on-line analysis, judge whether alarm, generated data form, historical record etc.An industrial computer can connect multiple transponders and receive data.
The backstage monitoring of software that industrial computer moves based on M2IGS Development of Configuration Software can be realized following functions: (1) main wiring diagram: graphically indicate the position that each radio temperature sensor is installed, show the temperature of current each point for measuring temperature; (2) temperature curve: the temperature variation curve of describing each point for measuring temperature; (3) event and warning: sound and light alarm when measuring in real time numerical value and exceeding warning value; (4) record form: the each point temperature value monitoring is stored with form; (5) fault shows: fault appears showing when work is undesired in the position of measured temperature point; (6) database function: store the temperature value in all each moment of point for measuring temperature, to carry out historical query, history curve demonstration; (7) rights management: can carry out authority setting, service data setting, modification etc.Need there is the operating personnel operation of rights of using can be effective; (8) print: provide printing function to each form, curve, form.
Fig. 2 shows the circuit structure of temperature probe.Temperature probe adopts aluminum alloy base and resistant to elevated temperatures ABS engineering plastics shell to make, and possesses the ability of replaceable battery, temperature probe is directly installed on measured point, directly contact with measured point by temperature probe, experience measured point temperature, utilize equipotential principle to solve High Temperature High Pressure Insulation Problems, thereby avoid temperature probe to be broken down by high-voltage or burn.Temperature probe comprises and is connected respectively to the temperature probe of wireless singlechip, high temperature resistant lithium battery, crystal oscillator, watchdog circuit and radio circuit, and radio circuit is connected with antenna.Wherein, the model of wireless singlechip is CC1110, and the model of temperature probe is AD7814, adopts spi bus to be connected to wireless singlechip.Lithium battery adopts TLH4902, is resistant to elevated temperatures army grade battery, has so just avoided at high temperature unsettled situation of common batteries.The frequency of crystal oscillator is 26MHz, for wireless singlechip work provides required clock.The watchdog circuit single-chip microcomputer that can reset when program is made mistakes, makes single-chip microcomputer come back to the state of normal operation.The house dog of temperature probe is the circuit through the external super low-power consumption of optimal design, and can guarantee still can reliably working under superpower electromagnetic interference (EMI).Radio circuit completes mutual conversion and the impedance matching of single-ended-to-difference.
Fig. 3 shows the circuit structure of transponder, comprises the RS485 interface, power module, crystal oscillator, watchdog circuit and the radio circuit that are connected respectively to wireless singlechip, and radio circuit is connected with antenna.Wherein, the model of wireless singlechip is CC1110; RS485 interface is selected MAX13487 chip, is connected to wireless singlechip by the mode of photoelectric coupling; The model of power module is SPS-30C-5; The frequency of crystal oscillator is 26MHz, for wireless singlechip work provides required clock; The watchdog circuit single-chip microcomputer that resets when program is made mistakes, makes single-chip microcomputer come back to the state of normal operation, and the chip model of selecting is MAX706; Radio circuit completes mutual conversion and the impedance matching of single-ended-to-difference.Transponder can also arrange a liquid crystal display that connects wireless singlechip by spi bus as required, displays temperature value, alarm limit value, alarm status, signal intensity etc. in real time, and the model of selecting is FYD12864.For realizing transponder power fail warning and the alarm of point for measuring temperature temperature beyond limit, wireless singlechip can also connect a relay by GPIO mouth, as alarm contact.
Claims (6)
1. a wireless temperature measuring device, is characterized in that, comprises temperature probe, transponder and industrial computer, and described temperature probe is connected to transponder by 433MHz wireless channel, and transponder is connected to industrial computer by RS485 interface.
2. wireless temperature measuring device according to claim 1, it is characterized in that, described temperature probe comprises and is connected respectively to the temperature probe of the first wireless singlechip, high temperature resistant lithium battery, first crystal oscillator, the first watchdog circuit and the first radio circuit, also comprises the first antenna that is connected to the first radio circuit; Described transponder comprises the RS485 interface, power module, the second crystal oscillator, the second watchdog circuit and the second radio circuit that are connected respectively to the second wireless singlechip, also comprises the second antenna that is connected to the second radio circuit.
3. wireless temperature measuring device according to claim 2, is characterized in that, described transponder also comprises the liquid crystal display that is connected to the second wireless singlechip.
4. wireless temperature measuring device according to claim 2, is characterized in that, described transponder also comprises the relay that is connected to the second wireless singlechip.
5. according to the wireless temperature measuring device described in claim 2 or 3 or 4, it is characterized in that, the model of described the first wireless singlechip and the second wireless singlechip is CC1110, the frequency of described first crystal oscillator and the second crystal oscillator is 26MHz, the model of described temperature probe is AD7814, the model of described high temperature resistant lithium battery is TLH4902, the chip model that described RS485 interface adopts is MAX13487, the model of described power module is SPS-30C-5, and the chip model that described the second watchdog circuit adopts is MAX706.
6. wireless temperature measuring device according to claim 3, is characterized in that, described Panel Type is FYD12864.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320728322.9U CN203629700U (en) | 2013-11-18 | 2013-11-18 | Wireless temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320728322.9U CN203629700U (en) | 2013-11-18 | 2013-11-18 | Wireless temperature measuring device |
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| Publication Number | Publication Date |
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| CN203629700U true CN203629700U (en) | 2014-06-04 |
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| CN201320728322.9U Expired - Lifetime CN203629700U (en) | 2013-11-18 | 2013-11-18 | Wireless temperature measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467192A (en) * | 2014-12-29 | 2015-03-25 | 浙江群力电气有限公司 | Portable intelligent switch cabinet data collection terminal |
| CN105424202A (en) * | 2015-11-05 | 2016-03-23 | 南京大全电气有限公司 | Wireless temperature measurement system and method for low-voltage switch cabinet |
-
2013
- 2013-11-18 CN CN201320728322.9U patent/CN203629700U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467192A (en) * | 2014-12-29 | 2015-03-25 | 浙江群力电气有限公司 | Portable intelligent switch cabinet data collection terminal |
| CN105424202A (en) * | 2015-11-05 | 2016-03-23 | 南京大全电气有限公司 | Wireless temperature measurement system and method for low-voltage switch cabinet |
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