CN103453998B - A kind of self-energizing radio temperature sensor and its implementation - Google Patents
A kind of self-energizing radio temperature sensor and its implementation Download PDFInfo
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- 239000003990 capacitor Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 8
- 238000009825 accumulation Methods 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims 3
- 230000005684 electric field Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 6
- 230000001939 inductive effect Effects 0.000 description 6
- 238000009529 body temperature measurement Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
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Abstract
The present invention is a kind of self-energizing radio temperature sensor and its implementation, and sensor includes self-energizing wireless temperature sensing chip and field coupling pole plate；Its chip includes microcontroller, self-energizing module, temperature sensing module, memorizer and wireless communication module；Microcontroller respectively with self-energizing module, temperature sensing module, memorizer and wireless communication module communication；Temperature sensing module is connected with memorizer.The present invention is by integrated on one chip to microcontroller, self-energizing module, temperature sensing module, memorizer and wireless communication module, gather, by self-energizing module, the displacement current that the equivalent capacity between field coupling pole plate and electrification in high voltage device produces under ac high-voltage, be chip power supply after changing into direct current.The present invention takes energy by the high voltage electric field of sensing alternation, belongs to self-power supply system, and the present invention is integrated on a single die, reduces sensor bulk, reduces cost, improves reliability, for ensureing that power grid security reliability service possesses important meaning.
Description
Technical field
The invention belongs to the information sensing integration field in intelligent grid, be specifically related to a kind of self-energizing radio temperature sensor
And its implementation.
Background technology
Along with developing rapidly of China's economic, also become geometry level to increase the demand of electric power energy, and turn as electric energy transmission
The visual plant changed such as high-tension switch cabinet, busbar joint, outdoor chopper switch etc. in During Process of Long-term Operation, switch
Get an electric shock and the position such as bus connection because of aging or contact resistance is excessive and generate heat, to the temperature detection of these heating positions and report
Alert, the generation of fire incident can be avoided, reduce the social influence such as economic loss and massive blackout.
Power system at present is dependent on manpower and infrared radiation thermometer for the conventional temperature-measurement method of transformer station's high-tension switch gear
Being timed and patrol and examine, this method not only expends a large amount of manpower, can not carry out the variations in temperature at temperature measuring point position
Monitoring in real time.And at present in wireless temperature measurement scheme, the working power of most thermometric product all uses battery or CT
Power taking pattern.The problem using one service life of existence of battery, after using a period of time, running down of battery is accomplished by changing
Battery, and the leakage of battery and blast all can bring potential safety hazard.CT power taking exists that volume is big, install constant asking
Topic, and vibration can be produced in ultrastrong magnetic field and send, power equipment is caused serious harm.Thus existing proposition
On-line measurement scheme in be arranged on the measured point such as conductive arm in high-tension switch cabinet due to temperature sensor, how to solve
The bottleneck place that temperature measuring equipment volume is big, the powerup issue of temperature measuring equipment is prior art.
Further, take in more existing thermometric schemes is electric current induction energy fetching mode, and its principle is dependent on high-tension line
In the alternating current that flows through by the coil-induced energy that obtains, principle is similar to transformator, transformator source class coil now
Being that list is pricked, secondary is many bindings circle, when having in high-voltage line, alternating current is out-of-date will produce faradic current in secondary, from
And obtain energy.Use this electric current induction energy fetching mode, when the current intensity in high-tension line fluctuates with loading how many
Time bigger, the energy that power supply provides also can be the most unstable, even has the danger of power-off, so electric current induction energy fetching mode
The most unstable, discomfort is combined into micro-control equipment and provides energy.
Summary of the invention
For the deficiencies in the prior art, the present invention proposes a kind of self-energizing radio temperature sensor and its implementation, solves
The technical problems such as the power supply that prior art exists is difficult, volume is big, service life is limited.
A kind of self-energizing radio temperature sensor that the present invention provides, it thes improvement is that, including self-energizing wireless temperature
Sensing chip and field coupling pole plate；
Described self-energizing wireless temperature sensing chip includes microcontroller, self-energizing module, temperature sensing module, memorizer
And wireless communication module；Described microcontroller respectively with described self-energizing module, temperature sensing module, memorizer and wireless
Communication module communicates；Described self-energizing module and described wireless communication module communication；Described temperature sensing module is deposited with described
Reservoir connects；Described microcontroller, self-energizing module, temperature sensing module, memorizer and wireless communication module are integrated in
On a piece of chip；
Described field coupling pole plate is arranged on the top of the electrification in high voltage device that switchgear point for measuring temperature is other in transformer station, and with
Described self-energizing module connects.
Wherein, described self-energizing module for powering to described self-energizing wireless temperature sensing chip, it include commutator,
Storage capacitor, dc-dc and power management module；
The exchange end of described commutator is connected with described field coupling pole plate, DC terminal successively with described storage capacitor and
Dc-dc connects；
Described power management module is connected with described storage capacitor, is used for monitoring energy accumulation situation in storage capacitor, concurrently
Go out to control pulse and start described dc-dc.
Wherein, described self-energizing module based on field coupling principle, commutator therein collect described field coupling pole plate with
The displacement current that equivalent capacity between described electrification in high voltage device produces under ac high-voltage, and change into after direct current as described
Storage capacitor charges.
Wherein, described temperature sensing module includes temperature sensor and the A/D modular converter connected；Described temperature sensor
For measuring the temperature at tested substation equipment heat generating spot；Described temperature sensor is collected by described A/D modular converter
Analogue signal be converted into digital signal and deliver to microcontroller is carried out data process.
Wherein, described wireless communication module is for the temperature information collected by described self-energizing wireless temperature sensing chip
It is transmitted to host computer or other chips with wireless radio frequency mode.
Wherein, described microcontroller, self-energizing module, temperature sensing module, memorizer and wireless communication module use
CMOS technology realizes and is integrated on a chip.
Wherein, 16 bit processors of the MIPS framework of described microcontroller employing high-performance, high integration, low-power consumption
Kernel, controls for being responsible for the equipment of described chip, Task matching and scheduling, the integration of data and dump task.
The implementation method of a kind of self-energizing wireless temperature sensing chip that the present invention proposes based on another object, its improvements
Being, described method comprises the steps:
(1) field coupling pole plate is arranged on the top of the electrification in high voltage device that switchgear point for measuring temperature is other in transformer station；
(2) self-energizing module is connected with described field coupling pole plate, powers for wireless temperature sensing chip；
(3) temperature sensing module measures the temperature at tested substation equipment heat generating spot, and temperature value is passed to microcontroller,
And preserve data by memorizer；
(4) described microcontroller carries out temperature acquisition according to the thermometric time interval controls temperature sensing module preset, and
The temperature data collected is passed to host computer by wireless communication module.
Wherein, the commutator in described self-energizing module collect between described field coupling pole plate and electrification in high voltage device etc.
The effect displacement current that produces under ac high-voltage of electric capacity, and change into after direct current as the charging of described storage capacitor；Power management mould
Energy accumulation situation in described storage capacitor is monitored by block, when energy storage reach a certain amount of after send control pulse start
Dc-dc works, and powers for described self-energizing wireless temperature sensing chip.
Compared with the prior art, the invention have the benefit that
The present invention solves the technical problems such as the power supply that prior art exists is difficult, volume is big, service life is limited, it is provided that
One has self-energizing function, and volume is little, the self-energizing radio temperature sensor of life-span length.
The present invention uses single-chip and field coupling pole plate to realize the function of self-energizing wireless temperature sensing, by self-energizing, temperature
Degree is measured, radio communication is integrated on one chip, completely compatible CMOS technology, can be integrated on chip, is
System is simple, low in energy consumption.Single-chip can reduce aerial lug, reduces the crosstalk between line, improves system stability.From
Take and can complete efficiently at low cost to take energy, thermometric and communication function by wireless temperature sensing chip, thus be greatly reduced
Sensor bulk, reduces cost, improves reliability, for ensureing that power grid security reliability service possesses important meaning.
The present invention is by design self-energizing module so that whole chip utilizes field coupling principle, by sensing the height of alternation
Piezoelectric field takes energy, belongs to self-power supply system, it is not necessary to additional power source.This technology and the employing battery proposed at present power,
Solar powered and electric current inductive power supply mode temperature measurement schemes is compared has significant advantage, first, and the present invention
In electric field induction self-energizing method the most protected from environmental, do not affected by load current fluctuations, and, there is the longevity
The feature that life is long and non-maintaining.
Accompanying drawing explanation
The structured flowchart of the self-energizing wireless temperature sensing chip that Fig. 1 provides for the present invention.
The structured flowchart of the self-energizing module that Fig. 2 provides for the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in further detail.
A kind of self-energizing radio temperature sensor that the present embodiment provides, uses field coupling pole plate and the mode of single-chip,
Meet the on-line temperature monitoring demand of transformer device of transformer substation temperature tested point, it is achieved in situation about powering without extraneous power supply
Lower monitoring tested point temperature in real time, and temperature data is launched by wireless transmission method.The electric field coupling of the present embodiment
Closing pole plate to be realized by one piece of metallic plate, it is (the highest that it is fixed on the equipment that the other high-voltage alternating in measured point in transformer station flows through
Pressure zone electrical part) surface on, be such as arranged in substation cable joint, blade contact, switch contact or copper bar connect
The positions such as point, then be connected with self-energizing wireless temperature sensing chip.By the power transformation of these sensing chips real-time perception transformer station
The ruuning situation of equipment, in order to find in time affect the external factor of substation safety stable operation and monitor power transformation in real time
Stand the internal fault of facility.
The self-energizing wireless temperature sensing chip structured flowchart of the present embodiment as it is shown in figure 1, its chip include microcontroller,
Self-energizing module, temperature sensing module, memorizer and wireless communication module；Microcontroller respectively with self-energizing module, temperature
Degree sensing module, memorizer communicate with wireless communication module；Self-energizing module and wireless communication module communication；Temperature sensing
Module is connected with memorizer；Microcontroller, self-energizing module, temperature sensing module, memorizer and wireless communication module are adopted
It is integrated in after processing by CMOS technology on a chip.Concrete, being described below of each several part:
Microcontroller:
It is the nucleus module of whole chip, carries out system overall scheduling and information mutual, when being responsible for chip controls can,
The functions such as tasks carrying and data process.In the present invention, microcontroller uses the processor cores of 16 MIPS frameworks,
Low power dissipation design, supports that JTAG debugs standard.Further, in the present embodiment, operating system uses real time operating system
(RTOS), there is independence, reliability and hard real-time feature, it is possible to timely respond to event request.
Self-energizing module:
It is for described chip power supply, and its structured flowchart is as in figure 2 it is shown, it includes commutator, storage capacitor, DC-DC
Transducer and power management module；It is by being connected with the field coupling pole plate being arranged on above high-tension switch cabinet conductive arm
Connect, collect the displacement current that the equivalent capacity between field coupling pole plate and electrification in high voltage device produces under ac high-voltage,
And be run through commutator be transformed to DC current to storage capacitor charge；The dc-dc voltage to storage capacitor
It is adjusted and maintains the voltage stabilizing of output.Energy accumulation situation in current storage capacitor is supervised by power management module
Depending on, when energy storage reach a certain amount of after send control pulse start dc-dc work, thus give whole chip power supply.
Comparing other power supply modes existing, the energy resource supply of this power supply mode is more stable, because electrical system bus voltage
Being the most stable, it will not fluctuate widely as load current；And, electric field induction takes energy mode not by the shadow of environment
Ring, either rainy weather or have dust to cover, take energy effect all without affecting it.
Temperature sensing module:
Its collection mainly completing temperature simulation amount and analog quantity to the conversion of digital quantity, specifically include temperature sensor and
A/D modular converter；Temperature sensor is used for, by measuring the temperature at tested substation equipment heat generating spot, obtaining temperature simulation
Amount, passes to A/D modular converter.A/D modular converter includes that sampling period timing sequence generating circuit, AD channel selecting control
Device, a/d converter and read/write address generator.Microprocessor controls sampling period timing sequence generating circuit produces AD conversion
All signals of device needs and sequential, measure the conversion of digital quantity by the temperature value simulation of analog quantity, reads Change-over knot
Fruit storage is to inside the SRAM of memorizer, and passes to and carry out data process in microprocessor.
Memorizer:
It is for storage chip and CONFIG.SYS and starts program and the temperature of storage said temperature sensing module output
Degrees of data.Core Embedded 16KB SRAM, as the running space of real-time data base, improves temperature data transmission and place
Reason speed.Embedded 256KB FLASH, starts program and CONFIG.SYS for storage chip.
Wireless communication module:
It is mainly responsible for the transmitting-receiving of wireless signal, i.e. receives data chip with other and carries out radio communication, and it can use radio frequency
Technology, the temperature information collected by this chip and other chips carry out data exchange.
Corresponding, the present embodiment proposes the implementation method of a kind of self-energizing wireless temperature sensing chip, comprises the steps:
(1) top of the electrification in high voltage device that the switchgear point for measuring temperature being arranged in transformer station by field coupling pole plate is other；
(2) commutator in self-energizing module collects the equivalent electric between described field coupling pole plate and electrification in high voltage device
Hold the displacement current produced under ac high-voltage, and change into and charge for described storage capacitor after direct current；Power management module pair
In described storage capacitor, energy accumulation situation monitors, when energy storage reaches enough to support that chip carries out a temperature acquisition also
Send control pulse after carrying out the energy of data process and wireless transmission and start dc-dc work, for described chip
Power supply；
(3) temperature sensing module measures the temperature at tested substation equipment heat generating spot, and temperature value is passed to microcontroller,
And preserve data by memorizer；
(4) described microcontroller carries out temperature acquisition according to the thermometric time interval controls temperature sensing module preset, and
The temperature data collected is passed to host computer by wireless communication module.
Finally should be noted that: above example only in order to illustrate that technical scheme is not intended to limit, although
Being described in detail the present invention with reference to above-described embodiment, those of ordinary skill in the field are it is understood that still
The detailed description of the invention of the present invention can be modified or equivalent, and appointing without departing from spirit and scope of the invention
What amendment or equivalent, it all should be contained in the middle of scope of the presently claimed invention.
Claims (4)
1. a self-energizing radio temperature sensor, it is characterised in that include self-energizing wireless temperature sensing chip and electricity
Field coupling plates；
Described self-energizing wireless temperature sensing chip includes microcontroller, self-energizing module, temperature sensing module, memorizer
And wireless communication module；Described microcontroller respectively with described self-energizing module, temperature sensing module, memorizer and wireless
Communication module communicates；Described self-energizing module and described wireless communication module communication；Described temperature sensing module is deposited with described
Reservoir connects；Described microcontroller, self-energizing module, temperature sensing module, memorizer and wireless communication module are integrated in
On a piece of chip；
Described field coupling pole plate is arranged on the top of the electrification in high voltage device that switchgear point for measuring temperature is other in transformer station, and with
Described self-energizing module connects；
Described microcontroller, self-energizing module, temperature sensing module, memorizer and wireless communication module use CMOS
Technique realizes and is integrated on a chip；
Described microcontroller uses 16 bit processor kernels of the MIPS framework of high-performance, high integration, low-power consumption,
Control for being responsible for the equipment of described chip, Task matching and scheduling, the integration of data and dump task；
Described self-energizing module is for powering to described self-energizing wireless temperature sensing chip, and it includes commutator, energy storage electricity
Appearance, dc-dc and power management module；
The exchange end of described commutator is connected with described field coupling pole plate, DC terminal successively with described storage capacitor and
Dc-dc connects；
Described power management module is connected with described storage capacitor, is used for monitoring energy accumulation situation in storage capacitor, concurrently
Go out to control pulse and start described dc-dc；
Described self-energizing module collects described field coupling pole plate and described height based on field coupling principle, commutator therein
The displacement current that equivalent capacity between pressure zone electrical part produces under ac high-voltage, and change into after direct current as described energy storage electricity
Capacity charge.
2. self-energizing radio temperature sensor as claimed in claim 1, it is characterised in that described temperature sensing module
Including the temperature sensor connected and A/D modular converter；
Described temperature sensor is for measuring the temperature at tested substation equipment heat generating spot；
The analogue signal that described temperature sensor collects is converted into digital signal and delivers to micro-control by described A/D modular converter
Device processed carries out data process.
3. self-energizing radio temperature sensor as claimed in claim 1, it is characterised in that described wireless communication module
For the temperature information that described self-energizing wireless temperature sensing chip collects is transmitted to upper with wireless radio frequency mode
Machine or other chips.
4. self-energizing radio temperature sensor as claimed in claim 1, it is characterised in that temperature that described self-energizing is wireless
The implementation method of degree sensing chip comprises the steps:
(1) field coupling pole plate is arranged on the top of the electrification in high voltage device that switchgear point for measuring temperature is other in transformer station；
(2) self-energizing module is connected with described field coupling pole plate, powers for wireless temperature sensing chip；
(3) temperature sensing module measures the temperature at tested substation equipment heat generating spot, and temperature value is passed to microcontroller,
And preserve data by memorizer；
(4) described microcontroller carries out temperature acquisition according to the thermometric time interval controls temperature sensing module preset, and
The temperature data collected is passed to host computer by wireless communication module；
Commutator in described self-energizing module collects the equivalent electric between described field coupling pole plate and electrification in high voltage device
Hold the displacement current produced under ac high-voltage, and change into and charge for described storage capacitor after direct current；Power management module pair
In described storage capacitor, energy accumulation situation monitors, when energy storage reaches enough to support that chip carries out a temperature acquisition also
Send control pulse after carrying out the energy of data process and wireless transmission and start dc-dc work, ask for for described
Can power by wireless temperature sensing chip.
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| CN104236747A (en) * | 2014-10-17 | 2014-12-24 | 国家电网公司 | Warning method and self-energy taking warning indicator for overheating of electric system joints |
| CN105698962A (en) * | 2014-11-24 | 2016-06-22 | 国网河南省电力公司平顶山供电公司 | Teletransmission resonance-type SAW (surface acoustic wave) temperature sensing device used for high-voltage equipment |
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| CN106503773A (en) * | 2016-10-21 | 2017-03-15 | 合肥工业大学 | A kind of RFID sensing labels of self-energizing |
| CN106680563B (en) * | 2016-12-26 | 2019-08-02 | 深圳先进技术研究院 | Multifunctional circuit |
| CN107157309A (en) * | 2017-06-30 | 2017-09-15 | 浙江绍兴苏泊尔生活电器有限公司 | Electromagnetic oven cooker |
| CN108648430A (en) * | 2018-05-11 | 2018-10-12 | 国网辽宁省电力有限公司电力科学研究院 | A kind of hyperfrequency take can and communication sensing device |
| CN112150308A (en) * | 2020-09-26 | 2020-12-29 | 国网山东省电力公司电力科学研究院 | Intelligent sensing system and method for surface state of power grid equipment |
| CN112393822A (en) * | 2020-10-29 | 2021-02-23 | 江苏南瑞帕威尔电气有限公司 | Self-energy-taking wireless transmission integrated intelligent temperature measurement contact arm |
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