CN103776563A - Fiber point-mode temperature measuring system with wireless networking function - Google Patents
Fiber point-mode temperature measuring system with wireless networking function Download PDFInfo
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- CN103776563A CN103776563A CN201310599737.5A CN201310599737A CN103776563A CN 103776563 A CN103776563 A CN 103776563A CN 201310599737 A CN201310599737 A CN 201310599737A CN 103776563 A CN103776563 A CN 103776563A
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Abstract
Disclosed is a fiber point-mode temperature measuring system with a wireless networking function. The system comprises a temperature measuring module, an optical signal acquisition processing module and a wireless emission module, wherein the temperature measuring module is connected with the optical signal acquisition module; the temperature measuring module transmits measured optical signals to the optical signal acquisition processing module; the optical signal acquisition processing module, through performing conversion processing on the optical signals, obtains temperature data and then sends the data to the wireless emission module; and the wireless emission module sends the temperature data out. The temperature measuring module provided by the invention employs a fiber as a main structure so that the system has the advantages of electromagnetic interference resistance, corrosion resistance, explosion prevention and lightning stroke prevention. At the same time, the system employs a wireless emitter to emit the acquired temperature data in a wireless mode so that the trouble of laying electric wires is saved, and wireless networking is facilitated.
Description
Technical field
The invention belongs to technical field of optical fiber sensing, particularly a kind of optical fiber point type temp measuring system with wireless networking function.
Background technology
The high-tension electricity device interior metal connectors such as power switch cabinet, isolating switch, frequency converter, GIS be easy to occur loose contact, the eccentric situation such as undesired of pegging graft.This will cause contact resistance excessive, and under large electric current, seriously, consequently connector temperature is abnormal in this place's heating, the oxidation of aggravation surface of contact, further increases contact resistance, forms vicious cycle, develop into after certain phase, can cause catastrophic failure, destroy the safe and reliable of power supply.Therefore butt contact carries out real time temperature monitoring, finds in time the heat generating spot in switch cubicle, and the early prediction of realizing fault is very important for the guarantee security of the lives and property with warning.
In high voltage electric power equip ment, thermometry mainly contains two kinds at present: active thermometry (typical example is wireless temperature measurement technology and infrared temperature-test technology), passive thermometry (typical example is optical fiber temperature-measurement).Both there is its defect.Wherein active thermometry all adopts electronic sensor as on-the-spot sensing unit, and spot sensor is charged, is easily subject to the impact of high-intensity magnetic field and high pressure, and long-term work is easily aging, brings potential safety hazard to equipment; Passive thermometry, namely simple Fiber Optic Pyrometer, anti-electromagnetic interference (EMI), be difficult for aging, but transmission time because adopt optical fiber structure, need buriedly, lay optical cable, increased undoubtedly human cost.
Summary of the invention
With an optical fiber point type temp measuring system for wireless networking function, it comprises temperature measurement module, light signal collection processing module and wireless transmitter module;
Described temperature measurement module is connected with described light signal collection processing module, described temperature measurement module sends the light signal recording to described light signal collection processing module, described light signal collection processing module is sent to described wireless transmitter module by described light signal being carried out to obtain temperature data after conversion process, and described wireless transmitter module sends described temperature data.
Preferably, described temperature measurement module comprises a temperature probe, and described temperature probe comprises an optical fiber, and described optical fiber is evenly plated in semiconductor material on its axial transversal end face by coating technique.
Preferably, the described optical fiber that has plated semiconductor film is through ceramic pipe and aviation rubber seal dress.
Preferably, described light signal collection processing module comprises light signal collection plate, across resistance amplifying circuit, programmable amplifying circuit, AD converter and the first arm processor, described programmable amplifying circuit is connected with described the first arm processor by a digital regulation resistance, described the first arm processor is connected with described AD converter simultaneously, described light signal collection plate, connects successively across hindering amplifying circuit, programmable amplifying circuit, AD converter.
Preferably, described across resistance amplifying circuit comprise PIN receiving tube and amplifier, described programmable amplifier comprises an operational amplifier, described operational amplifier adopts the mode of in-phase proportion input, described digital regulation resistance has TWI interface, described the first arm processor connects described digital regulation resistance by TWI interface, and by described digital regulation resistance, the enlargement factor of described operational amplifier is controlled.
Preferably, described programmable amplifier outputs signal to described AD converter, and is sent to described wireless transmitter module by the communication interface of described the first arm processor.
Preferably, described the first arm processor is STM32, and described communication interface is RS485.
Preferably, described wireless transmitter module comprises RS485 interface, the second arm processor and wireless transmit interface, the temperature data that described RS485 interface receiving optical signals acquisition processing module sends, transfers to described the second arm processor after temperature data buffer memory, to be sent to described wireless transmit interface.
Preferably, it also comprises a wireless receiver, and described wireless receiver comprises a Zigbee and an intelligent terminal, described Zigbee and the communication connection of described intelligent terminal.
Temperature measurement module provided by the invention adopts optical fiber as primary structure, and adopt coating technique and optical fiber ceramic pipe and the aviation rubber seal packing technique of semiconductor material, have advantages of anti-electromagnetic interference (EMI), anticorrosive, explosion-proof, put thunderbolt, simultaneously can be under the severe bad border such as high voltage electric power equip ment steady operation; And the present invention adopts transmitting set that the wireless mode of the temperature data collecting is launched, and has not only saved the trouble of laying wire, also conveniently carries out wireless networking, the dirigibility that has greatly improved system, also convenient construction.
Certainly, implement arbitrary product of the present invention and might not need to reach above-described all advantages simultaneously.
Accompanying drawing explanation
The optical fiber point type temp measuring system structural drawing of the wireless networking function that Fig. 1 provides for the embodiment of the present invention;
The light signal collection processing module structural representation that Fig. 2 provides for the embodiment of the present invention.
Specific embodiment
The embodiment of the present invention provides a kind of optical fiber point type temp measuring system with wireless networking function, and it comprises temperature measurement module, light signal collection processing module and wireless transmitter module;
Described temperature measurement module is connected with described light signal collection processing module, described temperature measurement module sends the light signal recording to described light signal collection processing module, described light signal collection processing module is sent to described wireless transmitter module by described light signal being carried out to obtain temperature data after conversion process, and described wireless transmitter module sends described temperature data.
Described temperature measurement module comprises a temperature probe, described temperature probe be by coating technique by semiconductor material be evenly plated in fiber axis to transversal end face on, by ceramic pipe and aviation glue, the fibre-optic package that has plated semiconductor film is shaped as again, between temperature probe and light signal collection plate, be connected by optical fiber, the optical fiber of this connection use adopts resistant to elevated temperatures polytetrafluoroethylmaterial material, one of optical fiber is LC joint, connects probe; The other end is SC joint, is plugged on light signal collection plate.
As shown in Figure 2, described light signal collection processing module comprises light signal collection plate, across resistance amplifying circuit, programmable amplifying circuit, AD converter and the first arm processor, described programmable amplifying circuit is connected with described the first arm processor by a digital regulation resistance, described the first arm processor is connected with described AD converter simultaneously, described light signal collection plate, connects successively across hindering amplifying circuit, programmable amplifying circuit, AD converter.
Described light signal collection plate is for receiving the light signal that temperature probe transmits, described across resistance amplifying circuit comprise PIN receiving tube and amplifier, described programmable amplifier comprises a high precision operating amplifier, described high precision operating amplifier adopts the mode of in-phase proportion input, described digital regulation resistance has TWI interface, described the first arm processor connects described digital regulation resistance by TWI interface, and by described digital regulation resistance, the enlargement factor of described operational amplifier is controlled, in the present embodiment, enlargement factor changes between 1-256 times.
Programmable amplifier described in the present embodiment outputs signal to described AD converter, and is sent to described wireless transmitter module by described the first arm processor by communication interface; Described the first arm processor is STM32, and described communication interface is RS485.
Described wireless transmitter module comprises RS485 interface, the second arm processor and wireless transmit interface, the temperature data that described RS485 interface receiving optical signals acquisition processing module sends, transfer to described the second arm processor after temperature data buffer memory, to be sent to described wireless transmit interface, in this power, the second arm processor is STM32.
On described wireless transmit interface, be connected with wireless transmit device Zigbee.
Embodiment bis-
As shown in Figure 1, the embodiment of the present invention provides a kind of optical fiber point type temp measuring system with wireless networking function, and it comprises temperature measurement module, light signal collection processing module and wireless transmitter module;
Described temperature measurement module is connected with described light signal collection processing module, described temperature measurement module sends the light signal recording to described light signal collection processing module, described light signal collection processing module is sent to described wireless transmitter module by described light signal being carried out to obtain temperature data after conversion process, and described wireless transmitter module sends described temperature data;
It also comprises a wireless receiver, and described wireless receiver comprises a Zigbee and an intelligent terminal, described Zigbee and the communication connection of described intelligent terminal.
A kind of optical fiber point type temp measuring system specific works process with wireless networking function that embodiment bis-provides is:
Temperature probe one end is attached to metal joint place, and one end is plugged on light signal collection plate by optical fiber SC joint, according to the count quantity of definite probe and the quantity of light signal collection plate measured, is connected with three temperature probes on a collection plate.
The semiconductor material of temperature probe runs into its refractive index of temperature and can change, and these change with temperature sets up the relation of mapping one by one.The light signal that the light of laser instrument transmitting returns after by semiconductor material carries temperature information.Light signal dash receiver receives light signal, first through PIN receiving tube, light signal is converted into electric signal, then, through across resistance amplifying circuit, signal being amplified, does impedance transformation simultaneously.Through programmable amplifier, signal is further amplified again through amplifying signal for the first time, change needed voltage to reach AD.Programmable amplifying circuit has a slice high precision operating amplifier, adopts the mode of in-phase proportion input, and gain resistor is fixed, and feedback resistance is controlled by digital regulation resistance, and digital regulation resistance has TWI interface, is connected with arm processor.Arm processor is by TWI interface control figure potentiometer, and its enlargement factor is changed between being 1-256 times, adjusts suitable voltage, is input in the AD converter of next stage.The temperature data that AD collects is transferred to ARM, and ARM passes to wireless transmitter module by communication interface by temperature data.
Arm processor in wireless transmitter module receives by RS485 interface the temperature data that light signal collection plate collects, and then carries out buffer memory, then waits for that in wireless receiver, signal is uploaded in the next request of PC transmitting.Upload after signal when receiving, arm processor is launched the temperature data in buffer memory by Zigbee wireless transmitter module, wireless receiving termination is received the wireless temperature data that Zigbee transmitting comes simultaneously, sends to host computer, namely PC by the communication mode of serial ports.Meanwhile, the temperature data that light signal collection part collects, also has alert data, in the time that PC sends request, uploads in the lump.Wherein alert data is stored in the ferroelectric memory of slave computer.
Temperature measurement module provided by the invention adopts optical fiber as primary structure, and adopt coating technique and optical fiber ceramic pipe and the aviation rubber seal packing technique of semiconductor material, have advantages of anti-electromagnetic interference (EMI), anticorrosive, explosion-proof, put thunderbolt, simultaneously can be under the severe bad border such as high voltage electric power equip ment steady operation; And the present invention adopts transmitting set that the wireless mode of the temperature data collecting is launched, and has not only saved the trouble of laying wire, also conveniently carries out wireless networking, the dirigibility that has greatly improved system, also convenient construction.
The disclosed preferred embodiment of the present invention is just for helping to set forth the present invention above.Preferred embodiment does not have all details of detailed descriptionthe, and also not limiting this invention is only described embodiment.Obviously,, according to the content of this instructions, can make many modifications and variations.These embodiment are chosen and specifically described to this instructions, is in order to explain better principle of the present invention and practical application, thereby under making, technical field technician can understand and utilize the present invention well.The present invention is only subject to the restriction of claims and four corner and equivalent.
Claims (10)
1. with an optical fiber point type temp measuring system for wireless networking function, it is characterized in that, comprise temperature measurement module, light signal collection processing module and wireless transmitter module;
Described temperature measurement module is connected with described light signal collection processing module, described temperature measurement module sends the light signal recording to described light signal collection processing module, described light signal collection processing module obtains temperature data and described temperature data is sent to described wireless transmitter module after conversion process by described light signal is carried out, and described wireless transmitter module sends described temperature data.
2. the optical fiber point type temp measuring system with wireless networking as claimed in claim 1, it is characterized in that, described temperature measurement module comprises a temperature probe, and described temperature probe comprises an optical fiber, and described optical fiber is evenly plated in semiconductor material on its axial transversal end face by coating technique.
3. the optical fiber point type temp measuring system with wireless networking as claimed in claim 2, is characterized in that, the described optical fiber that has plated semiconductor film is through ceramic pipe and aviation rubber seal dress.
4. the optical fiber point type temp measuring system with wireless networking as claimed in claim 1, it is characterized in that, described light signal collection processing module comprises light signal collection plate, across resistance amplifying circuit, programmable amplifying circuit, AD converter and the first arm processor, described programmable amplifying circuit is connected with described the first arm processor by a digital regulation resistance, described the first arm processor is connected with described AD converter simultaneously, described light signal collection plate, connects successively across hindering amplifying circuit, programmable amplifying circuit, AD converter.
5. the optical fiber point type temp measuring system with wireless networking as claimed in claim 4, it is characterized in that, described across resistance amplifying circuit comprise PIN receiving tube and amplifier, described programmable amplifier comprises an operational amplifier, described operational amplifier adopts the mode of in-phase proportion input, described digital regulation resistance has TWI interface, and described the first arm processor connects described digital regulation resistance by TWI interface, and by described digital regulation resistance, the enlargement factor of described operational amplifier is controlled.
6. the optical fiber point type temp measuring system with wireless networking as claimed in claim 5, is characterized in that, described programmable amplifier outputs signal to described AD converter, and is sent to described wireless transmitter module by the communication interface of described the first arm processor.
7. the optical fiber point type temp measuring system with wireless networking as claimed in claim 6, is characterized in that, described the first arm processor is STM32, and described communication interface is RS485.
8. the optical fiber point type temp measuring system with wireless networking as claimed in claim 7, it is characterized in that, described wireless transmitter module comprises RS485 interface, the second arm processor and wireless transmit interface, the temperature data that described RS485 interface receiving optical signals acquisition processing module sends, transfers to described the second arm processor after temperature data buffer memory, to be sent to described wireless transmit interface.
9. the optical fiber point type temp measuring system with wireless networking as claimed in claim 8, is characterized in that, is connected with wireless transmit device Zigbee on described wireless transmit interface.
10. the optical fiber point type temp measuring system with wireless networking as described in any one in claim 1-9, it is characterized in that, it also comprises a wireless receiver, and described wireless receiver comprises a Zigbee and an intelligent terminal, described Zigbee and the communication connection of described intelligent terminal.
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| CN201310599737.5A CN103776563A (en) | 2013-11-25 | 2013-11-25 | Fiber point-mode temperature measuring system with wireless networking function |
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| CN201310599737.5A CN103776563A (en) | 2013-11-25 | 2013-11-25 | Fiber point-mode temperature measuring system with wireless networking function |
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| CN106197740A (en) * | 2016-06-24 | 2016-12-07 | 桂林创研科技有限公司 | A kind of distributed optical fiber temperature monitoring system |
| CN109632135A (en) * | 2019-01-16 | 2019-04-16 | 安徽升隆电气有限公司 | A kind of wireless transmission optical fiber temperature-measurement equipment |
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