CN107631863A - Mechanical characteristic of high-voltage circuit breaker monitoring system and its monitoring method - Google Patents
Mechanical characteristic of high-voltage circuit breaker monitoring system and its monitoring method Download PDFInfo
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Abstract
Mechanical characteristic of high-voltage circuit breaker monitoring system disclosed by the invention, include monitoring terminal microcontroller, monitoring terminal microcontroller connects RTC real-time clock modules, crystal oscillator, Flash modules, SRAM module, watchdog module and radio receiving transmitting module, radio receiving transmitting module connection monitoring temperature rise of contact terminal respectively；Monitoring terminal microcontroller connects signal transducer by ADC；Monitoring terminal microcontroller, monitoring temperature rise of contact terminal and signal transducer are connected with power module；Monitoring terminal microcontroller is connected by CAN module with human-computer interaction module, and monitoring terminal microcontroller is also connected by ethernet module with Surveillance center.The invention also discloses the method that above-mentioned monitoring system is monitored to mechanical characteristic of high-voltage circuit breaker.Mechanical characteristic of high-voltage circuit breaker monitoring system and its monitoring method of the present invention, can realize the monitoring to primary cut-out running status, and it is low to solve the problems, such as that existing primary cut-out monitors incomplete and precision.
Description
Technical field
The invention belongs to transformer on-line monitoring technique field, is related to a kind of mechanical characteristic of high-voltage circuit breaker monitoring system
System, the invention further relates to the method being monitored using above-mentioned monitoring system to mechanical characteristic of high-voltage circuit breaker.
Background technology
Primary cut-out be switch electrically in it is the most key as insulation and an electrical equipment of arc extinguishing.When equipment and
During line failure, primary cut-out can quickly be cut off, isolated fault, ensure non-faulting user's normal operation.And work as high pressure
Breaker breaks down, can not be in very first time disengagement failure circuit or equipment, it will cause difficulty to power system, user equipment
With the destruction of appraisal, or even to the safety belt of staff carry out hidden danger.
At present, the primary cut-out monitoring device used both at home and abroad is not comprehensive due to number of sensors deficiency, monitoring parameter
Cause to be difficult to make system to the overall operation state of primary cut-out etc. reason and comprehensively prejudge；Simultaneously as the number used
According to the unicity for the treatment of technology, the mechanical property parameter for causing to collect still has to disturb after treatment to be difficult to filter
Remove, cause the parameter that mechanical characteristic of high-voltage circuit breaker on-Line Monitor Device obtains to reflect the real-time of primary cut-out exactly
Running status, in addition occur false alarm, malfunction situations such as.
How comprehensive monitoring is made to high-voltage circuit-breaker status for existing parameter and how to be used more efficient, comprehensive
Data processing technique interference signal is reduced to minimum, be so as to improve the precision of primary cut-out state monitoring and reliability
A difficult point existing for Fault Diagnosis for HV Circuit Breakers technology.Therefore existing primary cut-out on-line monitoring technique also needs further to change
Enter, to realize the accurate measurements to primary cut-out working condition.
The content of the invention
It is an object of the invention to provide a kind of mechanical characteristic of high-voltage circuit breaker monitoring system, can realize and primary cut-out is transported
The monitoring of row state, it is low to solve the problems, such as that existing primary cut-out monitors incomplete and precision.
Another object of the present invention is to provide to be monitored mechanical characteristic of high-voltage circuit breaker using above-mentioned monitoring system
Method, the characteristic parameter that collects is handled using a variety of data processing algorithms, operational precision is high, can reduce even elimination height
The false alarm of voltage breaker failure, malfunction.
The first technical scheme of the present invention is mechanical characteristic of high-voltage circuit breaker monitoring system, to include monitoring
Terminal microcontroller, monitoring terminal microcontroller connect respectively RTC real-time clock modules, crystal oscillator, Flash modules, SRAM module,
Watchdog module and radio receiving transmitting module, radio receiving transmitting module connection monitoring temperature rise of contact terminal；Monitoring terminal microcontroller leads to
Cross ADC connection signal transducer；Monitoring terminal microcontroller, monitoring temperature rise of contact terminal and signal transducer are and power supply
Module connects；Monitoring terminal microcontroller is connected by CAN module with human-computer interaction module, and monitoring terminal microcontroller also passes through
Ethernet module is connected with Surveillance center.
The characteristics of the first technical scheme of the invention, also resides in：
ADC and RTC real-time clock modules are embedded in monitoring terminal microcontroller.
Monitoring terminal microcontroller uses STM32F407ZGT6 chips.
Radio receiving transmitting module is 433MHz radio receiving transmitting modules.
Signal transducer, include the linear optical coupling being connected with ADC, linear optical coupling connection signal conditioning circuit, letter
Number modulate circuit is connected to linear displacement transducer, Hall current transformer；Linear displacement transducer is provided with three, point
It is not installed in A, B, C three-phase contact mechanical structure of primary cut-out, for monitoring each phase moving contact action message；Hall electricity
Current transformer is provided with three, gathers closing coil action current, switching winding action current and energy storage motor action electricity respectively
Stream.
Monitoring temperature rise of contact terminal, includes the single-chip minimum system being connected with radio receiving transmitting module, and single-chip microcomputer is minimum
System is connected to eeprom memory, multiple light-coupled isolation modules, and each light-coupled isolation module is circumscribed with TEMP
Device, each temperature sensor connect primary cut-out A phase upper contact heads.
Temperature sensor is resistance temperature detector.
Second of technical scheme of the present invention is that height is broken using mechanical characteristic of high-voltage circuit breaker monitoring system
The method that road device mechanical property is monitored, specifically implements according to following steps：
Step 1, three when obtaining by linear displacement transducer, Hall current transformer primary cut-out action respectively touch
Head stroke signal, divide-shut brake coil current signal, energy storage motor signal；The signal value of respective passage is entered through signal conditioning circuit
By linear optical coupling isolation after row filter amplifying processing, the number for being sampled and being got in monitoring terminal microcontroller is re-fed into
According to Wavelet Denoising Method processing is carried out, specifically implement according to following steps：
Based on all signals for needing storage reclosing, using embedded position high-precision AD module, it is logical to set each simulation
The sample frequency in road is 100KHz, gathers 3 seconds prolonged 30000 points of working values；
Step 1.1, according to the type of action that primary cut-out is judged in six passages each 30000 points of big array, knot
The actual operating state of primary cut-out is closed, is divided into following five kinds of situations：
A) separating brake；B) close a floodgate within 0.3 second after separating brake；C) close a floodgate within 0.3 second after separating brake, if still having failure, separating brake again；d)
Close a floodgate；If faulty, separating brake after e) closing a floodgate；
According to above-mentioned five kinds of situations, the data of six analog acquisition passages are classified；
Step 1.2, according to the different type of action of step 1.1 mesohigh breaker, data cutout is carried out to LIULUTONG road,
In the caching array that the signal being truncated to deposit is set, because opening time is usually no more than 50ms, closing time is general
No more than 100ms, the buffer storage length of separating brake data is set as 100ms, i.e., 1000 points, the buffer storage length of combined floodgate data are
150ms, i.e. 1500 points；
In order to handle the above situation c), caching array is divided into separating brake caching 0 and separating brake caches 1 two groups；
The data deposit separating brake caching 0 that first time separating brake is truncated to, the data deposit point that second of separating brake is truncated to
Lock caching 1；All deposit combined floodgate caches combined floodgate data；
Step 1.3, Wavelet Denoising Method processing is carried out to the data being truncated in caching, establish the specific step of wavelet scaling function
It is rapid as follows：
Step a, the Decomposition order N of Wavelet Denoising Method is determined, and chooses wavelet threshold function；
Step b, after the completion for the treatment of step a, multinomial P (y)=P is selectedN(y)+yNR (1/2-y) >=0,0≤y≤1, its
Middle PN(y) meet R (- y)=- R (y), and meet supP (y)<22(N-1)；A selected real coefficient trigonometric polynomial Q (z) causes P
(sin2(ω/2))=| Q (eiω)|2；ChooseIn { hkBe scaling function coefficient；
Step c, after the completion for the treatment of step b, by coefficient substitute into corresponding in scaling function, that is, obtain under different resolution frequencies
The coefficient of wavelet scaling function；
Step d, after the completion for the treatment of step c, the coefficient for the high fdrequency component that will be filtered out is arranged to zero, now can be interference signal
Remove；
Step e, after the completion for the treatment of step d, the wavelet scaling function under remaining resolution frequency is added, by small echo signal
Reconstruct, finally gives the signal after filtering out noise；
Step 2, the data exported using sliding average method smoothing processing through step 1；
Step 3, after step 2, calculate respectively the separating brake average speed of moving contact in high voltage breaker, closing speed, point
Combined floodgate maximal rate, energy storage time, the time not same period, the high voltage circuit breaker closing of branch wire time and primary cut-out separating brake
The not time same period, specifically implement in accordance with the following methods：
According to the definition of primary cut-out parameter, contact separating brake average speed is moving contact before primary cut-out separating brake
6mm average speed；Contact combined floodgate average speed is average speed of the moving contact in the whole stroke of breaker closing；Contact
Point, combined floodgate maximal rate be breaker moving contact whole stroke in breaker actuation maximal rate；
The separating brake average speed computational methods of moving contact in high voltage breaker are specific as follows：
Find High Voltage Circuit Breaker Contacts action the 6mm moment point, record contact of breaker action 6mm positions when time be
T, as 0 at the time of setting breaker origination action, then the separating brake average speed calculation formula of moving contact in high voltage breaker is：VOpen
=6/T；
The closing speed computational methods of moving contact in high voltage breaker are specific as follows：
The point at High Voltage Circuit Breaker Contacts release moment is found, and the stroke value recorded at that time is S4；With initial position
As starting stroke value S3, set high voltage circuit breaker closing and act initial time as 0, High Voltage Circuit Breaker Contacts close a floodgate finish time
For tClose, then the combined floodgate average speed calculation formula of moving contact in high voltage breaker be：VClose=(S4-S3)/tClose；
The divide-shut brake maximal rate computational methods of moving contact in high voltage breaker, it is specific as follows：
The counting period value 5ms of run-length data, i.e. 50 points are determined, sets the stroke value of t as S (t+50) displacement
It is worth, then the instantaneous velocity V of ttFormula is as follows：
Using 50 points as material calculation, according to formula (1-1) since the 50th point that High Voltage Circuit Breaker Contacts act
Calculate, at the time of moving contact in high voltage breaker tenth skill is arrived in calculating always, obtain the Instantaneous velocity values at each moment；In order to
The Instantaneous velocity values that guarantee finally obtains are accurate, 5 Instantaneous velocity values of maximum found in these Instantaneous velocity values, in
Value method, that of selection among this 5 maximums is as final moving contact divide-shut brake maximum speed value；
Energy storage time, the branch wire time of primary cut-out are calculated using RTC real-time clock modules, its calculating process is specific
It is as follows：
The intake of high pressure disconnected breaker open operation, combined floodgate and energy storage motor is sentenced in real time, and when primary cut-out separating brake, close a floodgate behaviour
When work terminates or energy storage motor starts from power cut-off, acquisition acts beginning and end to control monitoring terminal microcontroller successively
The temporal information at moment, the temporal information at release moment is made the difference with acting the temporal information of initial time, then obtains height
The working time of voltage breaker opening time, closing time and energy storage motor；
According to the opening time and closing time of obtained primary cut-out, the temporal information now obtained has three-phase respectively
The information of contact is TOPEN_A、TOPEN_B、TOPEN_COr TClose_A、TClose_B、TClose_C, wherein first three items are respectively A, B, C three-phase
The opening time of contact, latter three be respectively A, B, C three-phase contact closing time；
Three-phase opening time is made the difference two-by-two, obtains A-B separating brake not the time same period, the B-C time not same period, C-
The A separating brake not time same period, the maximum in these three values is taken, that is, obtains the not time same period of high-voltage circuit breaker lock；
Three-phase closing time is made the difference two-by-two, obtains A-B not the time same period, B-C time combined floodgate phase, the C- of closing a floodgate
The A combined floodgate not time same period, the maximum in these three values is taken, that is, obtains the not time same period of high voltage circuit breaker closing；
Step 4, after the completion for the treatment of step 3, monitor the temperature rise shape of High Voltage Circuit Breaker Contacts on-line by the way of being wirelessly transferred
Condition；
Step 5, after step 1~step 4, monitoring terminal microcontroller is divided, combined floodgate contact is during divide-shut brake
Average speed and maximal rate, the separating brake not time same period, close a floodgate the not time same period, point, closing coil maximum current, energy storage electricity
Machine starting current, branch wire time, these parameters of contact temperature rise value；By Flash modules by data storage, prevent power down from losing
Lose, and data are uploaded to by human-computer interaction module by CAN module and shown, while data are uploaded to by prison by ethernet module
Control center, carry out long-range monitoring.
The characteristics of second of technical scheme of the invention, also resides in：
Step 2 is specifically implemented in accordance with the following methods：
Setting data are close stable in certain a bit of section M, as certain local average, to reduce error with making an uproar
Sound, and make continuous local average on the M of minizone one by one along the N number of data of total length；
After step 1, inserted obtained local mean values as the data after smooth in original buffer area, when whole
Caching calculating terminates, and also having M-1 point can not calculate, and this M-1 point and previous point are done into last time averagely, and meter
Obtained average value all inserts remaining M-1 position in buffer area as last value, so far obtains all processes
Data after smooth；
STM32F407 chips in monitoring terminal microcontroller are used to carry out always the data after denoising and smoothing processing
Converge, storage, then carry out data analysis calculating processing, finally give including：Divide, combined floodgate contact being averaged during divide-shut brake
Speed and maximal rate, divide, closing coil maximum current, energy storage motor starting current, branch wire time and contact temperature rise value.
Step 4 is specifically implemented according to following steps：
The temperature rise monitoring of step 4.1, primary cut-out passes through temperature sensor sense temperature signal, and temperature sensor has
The property of different resistances is presented under different temperatures environment, after Wheatstone bridge is changed, temperature signal is converted into voltage letter
Number, the temperature information of High Voltage Circuit Breaker Contacts is obtained, single-chip minimum system energy is being transformed into by the isolation of light-coupled isolation module
The level range of identification, magnitude of voltage is read out by single-chip minimum system；
Step 4.2, after the completion for the treatment of step 4.1, after single-chip minimum system reads magnitude of voltage, according to temperature sensor
Characteristic, table look-up to obtain the actual temperature value of High Voltage Circuit Breaker Contacts, and the continuous reading group temperature value pair in each collecting temperature
It carries out data processing, obtains more accurate temperature value；
The processing of temperature data is using two peaks of removing and two minimums, the average value for asking for remaining 6 data
Method；
Step 4.3, after step 4.2 obtains temperature data, pass through eeprom memory and carry out temperature data and time and believe
The storage of breath, and monitoring terminal microcontroller is sent data to by radio receiving transmitting module.
The features of the present invention also resides in：
(1) mechanical characteristic of high-voltage circuit breaker monitoring system of the present invention, can monitor primary cut-out three-phase contact mechanical property,
The parameters such as three-phase contact temperature rise value, divide-shut brake coil current and energy storage motor current value, so as to the operation to primary cut-out
State, which is made, all-sidedly and accurately to be judged；
(2) mechanical characteristic of high-voltage circuit breaker monitoring system of the present invention establishes when the data to collecting are handled
Wavelet Denoising Method model, it is contemplated that primary cut-out may be disturbed in action process by electromagnetic signal, be also contemplated for simultaneously
To energy storage motor, in action, starting current may cause power supply unstable so as to cause divide-shut brake curve to go out in action process
Existing noise；Collection signal when being acted using Wavelet Algorithm to primary cut-out is filtered processing, filters out spike
With clutter, sampled data is set more to be coincide with actual value；
(3) during being monitored using mechanical characteristic of high-voltage circuit breaker monitoring system of the present invention, to collecting
When data are handled, using sliding average method smoothed curve, it is contemplated that Wavelet Algorithm can not handle all abnormal completely
Height, therefore the data after the processing of sliding average method can be optimized further to data, so as to improve data
Precision；
(4) during being monitored using mechanical characteristic of high-voltage circuit breaker monitoring system of the present invention, to collecting
When data are handled, the velocity amplitude of contact of breaker divide-shut brake is calculated using Slope Method combination median method, it is contemplated that height is broken
The definition of road device maximal rate, the slope (i.e. speed) of a certain section shifting is tried to achieve through Slope Method, then takes maximum to slope value, and
Intermediate value is taken to 5 slope values of maximum using median method, so as to obtain more accurately maximum speed value；
(5) mechanical characteristic of high-voltage circuit breaker monitoring system of the present invention, by mechanical characteristic of high-voltage circuit breaker monitoring technology and height
Voltage breaker monitoring temperature rise of contact technology combines, and can realize the comprehensive monitoring to primary cut-out running status, solve existing
Primary cut-out monitors the problem of incomplete and precision is not high；When the data to collecting are handled, at a variety of data
Adjustment method is handled the characteristic parameter collected, and operational precision is high, can reduce or even eliminate the mistake of primary cut-out failure
Alarm, malfunction.
Brief description of the drawings
Fig. 1 is the structural representation of mechanical characteristic of high-voltage circuit breaker monitoring system of the present invention；
Fig. 2 is the structural representation of monitoring temperature rise of contact terminal in mechanical characteristic of high-voltage circuit breaker monitoring system of the present invention；
Fig. 3 is the flow chart for the Wavelet Denoising Method being related in the monitoring method of the present invention；
Fig. 4 is that the sliding average method being related in the monitoring method of the present invention carries out the flow chart of data processing；
Fig. 5 is that the Slope Method combination median method primary cut-out being related in the monitoring method of the present invention calculates divide-shut brake contact
The calculation flow chart of maximal rate.
In figure, 1. power modules, 2. monitoring terminal microcontrollers, 3.Flash modules, 4.SRAM modules, when 5.RTC is real-time
Clock module, 6. watchdog modules, 7.CAN modules, 8. ethernet modules, 9. crystal oscillators, 10. radio receiving transmitting modules, 11. man-machine interactions
Module, 12. linear displacement transducers, 13. Hall current transformers, 14. signal conditioning circuits, 15. linear optical couplings, 16. monitoring
Center, 17. temperature sensors, 18. single-chip minimum systems, 19. light-coupled isolation modules, 20.EEPROM memories, 21. contacts
Temperature rise monitoring terminal, 22. signal transducers.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and detailed description.
Mechanical characteristic of high-voltage circuit breaker monitoring system of the present invention, as shown in figure 1, including monitoring terminal microcontroller 2, supervise
Survey terminal microcontroller 2 and connect RTC real-time clock modules 5, crystal oscillator 9, Flash modules 3, SRAM module 4, watchdog module respectively
10 and radio receiving transmitting module 6, radio receiving transmitting module 6 connects monitoring temperature rise of contact terminal 21；Monitoring terminal microcontroller 2 passes through
ADC connects signal transducer 22；Monitoring terminal microcontroller 2, monitoring temperature rise of contact terminal 21 and signal transducer 22 are equal
It is connected with power module 1；Monitoring terminal microcontroller 2 is connected by CAN module 7 with human-computer interaction module 11, and monitoring terminal is micro-
Controller 2 is also connected by ethernet module 8 with Surveillance center 16.
Monitoring terminal microcontroller 2 uses STM32F407ZGT6 chips, and the chip has floating-point operation function.
ADC is embedded in monitoring terminal microcontroller 2, using high-precision AD module, sets each analog channel
Sample frequency is 100KHz, gathers 3 seconds prolonged working values () at 30000 points.
RTC real-time clock modules 5 are embedded in monitoring terminal microcontroller 2.
Power module 1 takes the power supply mode of energy using AC/DC universal and mutual inductance.
Radio receiving transmitting module 10 is 433MHz radio receiving transmitting modules.
Signal transducer 22, as shown in figure 1, including the linear optical coupling 15 being connected with ADC, linear optical coupling 15 connects
Signal conditioning circuit 14, signal conditioning circuit 14 are connected to linear displacement transducer 12, Hall current transformer 13.Its
In, linear displacement transducer 12 is provided with three, is respectively arranged in A, B, C three-phase contact mechanical structure of primary cut-out,
For monitoring each phase moving contact action message；Hall current transformer 13 is provided with three, gathers closing coil action electricity respectively
Stream, switching winding action current and energy storage motor action current.
Monitoring temperature rise of contact terminal 21, as shown in Fig. 2 including the minimum system of the single-chip microcomputer being connected with radio receiving transmitting module 10
System 18, single-chip minimum system 18 is connected to eeprom memory 20, multiple light-coupled isolation modules 19, each light-coupled isolation
Module 19 is circumscribed with temperature sensor 17, and each temperature sensor 17 connects primary cut-out A phase upper contact heads.
Temperature sensor 17 is resistance temperature detector, environment temperature can be converted to the change of resistance value, in order to protect
Card single-chip minimum system 18 can collect correct voltage signal, be converted to the change of resistance value using Wheatstone bridge
The change of voltage, and insulation blocking is carried out to signal front and back end by light-coupled isolation module 19, temperature signal is transformed into monolithic
The level range that machine minimum system 18 can gather.
The function of critical piece is as follows in mechanical characteristic of high-voltage circuit breaker monitoring system of the present invention：
Power module 1：For being powered to whole monitoring terminal controller 2, monitoring temperature rise of contact terminal 21；
Monitoring terminal microcontroller 2：For realizing the function of whole system, including：Data sampling, data filtering, parameter
Computing, data communication and crystal display；
Flash modules 3：For storing the characteristic parameter that primary cut-out finally gives, recording curve values, guarantee system is broken
Electric data are not lost；
SRAM module 4：As temporal cache space, the data acquisition of storage primary cut-out, data filtering and parameter calculate
During it is data cached；
Real-time clock module 5：For obtaining primary cut-out separating brake time, closing time, energy storage motor actuation time；
Radio receiving transmitting module 6：For receiving and sending the contact temperature rise data of monitoring temperature rise of contact terminal 21；
CAN module 7：For being communicated with human-computer interaction module 11, because CAN module has traffic rate fast and reliable communications
The advantages of, suitable for the communication of big data quantity；
Ethernet module 8：For being communicated with the upper computer software of Surveillance center 16, Modbus agreements can be embedded in and carried out efficiently
Reliable data transmission；
Crystal oscillator 9：The normal work of monitoring terminal microcontroller 2 can be ensured；
Watchdog module 10：Prevent from program stuck or run to fly；
Human-computer interaction module 11：For showing the real-time running state of primary cut-out, recording curve, circuit breaker parameters letter
Breath, operations staff's maintenance is facilitated to check；
Linear displacement transducer 12 and Hall current transformer 13：For obtain the contact travel signal of primary cut-out,
With the current signal of coil motor；
Signal conditioning circuit 14：Signal for being got to linear displacement transducer 12 and Hall current transformer 13 enters
Row amplification filtering process, increase the resolution of signal；
Linear optical coupling 15：For isolating to the signal of analog circuit, increase the stability of signal, and by analog circuit
The signal level of front end is transformed into 2 acceptable level of monitoring terminal microcontroller；
Surveillance center 16：As the backstage of whole system, it is responsible for remote control, in real time monitoring；
Temperature sensor 17：For obtaining the temperature value on contact；
Single-chip minimum system 18：It is the microprocessor of temperature rise monitoring terminal, temperature value can be sampled, handles and lead to
Radio receiving transmitting module 10 is crossed to send to monitoring terminal microcontroller 2；
Light-coupled isolation module 19：The temperature signal obtained for isolated temperature sensor, and protect back-end circuit；
Eeprom memory 20：The temperature rise of the primary cut-out three-phase contact obtained for recording temperature rise monitoring terminal to handle
Value.
The realization principle of mechanical characteristic of high-voltage circuit breaker monitoring system of the present invention is as follows：
The data got are passed through into signal conditioning circuit 14 by linear displacement transducer 12 and Hall current transformer 13
Processing is amplified, then linear optocoupler 15 is isolated, and is converted to 2 receptible level of monitoring terminal microcontroller and is carried out AD and adopts
Sample；
Monitoring terminal microcontroller 2 is calculated in the data Cun Chudao SRAM modules 4 collected by corresponding Wavelet Denoising Method
Method carries out denoising, then after sliding average is handled, the characteristic parameter and recording curve of primary cut-out is calculated, will count
Obtained parameter storage is backed up into Flash modules 3, and human-computer interaction module 11 or logical is uploaded to eventually through CAN module 7
Cross ethernet module 8 and be uploaded to Surveillance center 16.
Power module 1 is used for supplying to monitoring terminal microcontroller 2, linear displacement transducer 12 and Hall current transformer 13
Electricity, while powered to monitoring temperature rise of contact terminal 21；Real-time clock module 5 be used for record circuit breaker failure generation it is specific when
Between, while during for 16 real-time pairs of Surveillance center；Watchdog module 10 can prevent from program stuck or run to fly；CAN module 7 with
Human-computer interaction module 11 communicates；Ethernet module 8 communicates with Surveillance center 16；Crystal oscillator 9 can ensure monitoring terminal microcontroller 2 just
Often work；Enter row data communication between radio receiving transmitting module 10 and monitoring temperature rise of contact terminal 21, human-computer interaction module 11 is used for
Breaker current state is shown, display contact travel curve, divide-shut brake coil current curve, breaker mechanic property parameter are with breaking
Road device contact temperature rise parameter etc. simultaneously shows that the action log of breaker and fault alarm record.
The side being monitored using mechanical characteristic of high-voltage circuit breaker monitoring system of the present invention to mechanical characteristic of high-voltage circuit breaker
Method, specifically implement according to following steps：
Step 1, three when obtaining by linear displacement transducer 12, Hall current transformer 13 primary cut-out action respectively
Phase contact stroke signal, divide-shut brake coil current signal, energy storage motor signal；By the signal value of respective passage through signal condition electricity
Road 14 is isolated after being filtered enhanced processing by linear optical coupling 15, is re-fed into monitoring terminal microcontroller 2 and is sampled and incited somebody to action
The data got carry out Wavelet Denoising Method processing, specifically implement according to following steps：
All signals in view of needing storage reclosing, using 12 embedded high-precision AD modules, set each mould
The sample frequency for intending passage is 100KHz, gathers 3 seconds prolonged working values () at 30000 points；
Step 1.1, according to the type of action that primary cut-out is judged in six passages each 30000 points of big array, knot
The actual operating state of primary cut-out is closed, is divided into following five kinds of situations：
A) separating brake；B) close a floodgate within 0.3 second after separating brake；C) close a floodgate within 0.3 second after separating brake, if still having failure, separating brake again；d)
Close a floodgate；If faulty, separating brake after e) closing a floodgate；
According to above-mentioned five kinds of situations, the data of six analog acquisition passages are classified；
Step 1.2, according to the different type of action of step 1.1 mesohigh breaker, data cutout is carried out to LIULUTONG road,
In the caching array that the signal being truncated to deposit is set, because opening time is usually no more than 50ms, closing time is general
No more than 100ms, the buffer storage length of separating brake data is set as 100ms (i.e. 1000 points), the buffer storage length of combined floodgate data is
150ms (1500 points)；
Now, in order to handle the above situation c), caching array is divided into separating brake caching 0 and separating brake caches 1 two groups；
The data deposit separating brake caching 0 that first time separating brake is truncated to, the data deposit point that second of separating brake is truncated to
Lock caching 1；All deposit combined floodgate caches combined floodgate data；
Step 1.3, Wavelet Denoising Method processing is carried out to the data being truncated in caching, establish the specific step of wavelet scaling function
It is rapid as follows, as shown in figure 3,：
Step a, the Decomposition order N of Wavelet Denoising Method is determined, and chooses wavelet threshold function；
Step b, after the completion for the treatment of step a, multinomial P (y)=P is selectedN(y)+yNR (1/2-y) >=0,0≤y≤1, its
Middle PN(y) meet R (- y)=- R (y), and meet supP (y)<22(N-1)；A selected real coefficient trigonometric polynomial Q (z) causes P
(sin2(ω/2))=| Q (eiω)|2；ChooseIn { hkBe scaling function coefficient；
Step c, after the completion for the treatment of step b, by coefficient substitute into corresponding in scaling function, that is, obtain under different resolution frequencies
The coefficient of wavelet scaling function；
Step d, after the completion for the treatment of step c, the coefficient for the high fdrequency component that will be filtered out is arranged to zero, now can be interference signal
Remove；
Step e, after the completion for the treatment of step d, the wavelet scaling function under remaining resolution frequency is added, by small echo signal
Reconstruct, finally gives the signal after filtering out noise.
In fact, the signal after step 1 Wavelet Denoising Method can still carry the noise that part is difficult to eliminate, in order to eliminate these
Randomness composition, to these data carry out smoothly with further filtering process.
Step 2, the data exported using sliding average method smoothing processing through step 1, as shown in figure 4, specific method is such as
Under：
Setting data are close stable in certain a bit of section M, as certain local average, to reduce error with making an uproar
Sound, and make continuous local average on the M of minizone one by one along the N number of data of total length；
After step 1, inserted obtained local mean values as the data after smooth in original buffer area, when whole
Caching calculating terminates, and also having M-1 point can not calculate, and this M-1 point and previous point are done into last time averagely, and meter
Obtained average value all inserts remaining M-1 position in buffer area as last value, so far obtains all processes
Data after smooth；
STM32F407 chips in monitoring terminal microcontroller 2 are used to carry out the data after denoising and smoothing processing
Aggregation, storage, then carry out data analysis calculating processing, finally give including：Divide, combined floodgate contact putting down during divide-shut brake
Equal speed and maximal rate, divide, closing coil maximum current, energy storage motor starting current, branch wire time and contact temperature rise value.
Step 3, after step 2, calculate respectively the separating brake average speed of moving contact in high voltage breaker, closing speed, point
Combined floodgate maximal rate, energy storage time, the time not same period, the high voltage circuit breaker closing of branch wire time and primary cut-out separating brake
The not time same period, specifically implement in accordance with the following methods：
Primary cut-out, it is necessary to obtain the service behaviour of contact, mainly passes through the flat of contact in divide-shut brake action process
Equal divide-shut brake speed reflects with maximum divide-shut brake speed；
According to the definition of primary cut-out parameter, contact separating brake average speed is moving contact before primary cut-out separating brake
6mm average speed；Contact combined floodgate average speed is average speed of the moving contact in the whole stroke of breaker closing；Contact
Point, combined floodgate maximal rate be breaker moving contact whole stroke in breaker actuation maximal rate；
The separating brake average speed computational methods of moving contact in high voltage breaker are specific as follows：
Find High Voltage Circuit Breaker Contacts action the 6mm moment point, record contact of breaker action 6mm positions when time be
T, as 0 at the time of setting breaker origination action, then the separating brake average speed calculation formula of moving contact in high voltage breaker is：VOpen
=6/T；
The closing speed computational methods of moving contact in high voltage breaker are specific as follows：
The point at High Voltage Circuit Breaker Contacts release moment is found, and the stroke value recorded at that time is S4；With initial position
As starting stroke value S3, set high voltage circuit breaker closing and act initial time as 0, High Voltage Circuit Breaker Contacts close a floodgate finish time
For tClose, then the combined floodgate average speed calculation formula of moving contact in high voltage breaker be：VClose=(S4-S3)/tClose；
The divide-shut brake maximal rate computational methods of moving contact in high voltage breaker, as shown in figure 5, specific as follows：
The counting period value 5ms (i.e. 50 points) of run-length data is determined, sets the stroke value of t as S (t+50) position
The instantaneous velocity V of shifting value, then ttFormula is as follows：
Using 50 points as material calculation, according to formula (1-1) since the 50th point that High Voltage Circuit Breaker Contacts act
Calculate, at the time of moving contact in high voltage breaker tenth skill is arrived in calculating always, the Instantaneous velocity values at each moment can be obtained；For
Ensure that the Instantaneous velocity values that finally obtain are more accurate, find 5 Instantaneous velocity values of maximum in these Instantaneous velocity values,
Using median method, that of selection among this 5 maximums is as final moving contact divide-shut brake maximum speed value；
Energy storage time, the branch wire time of primary cut-out, its calculating process tool are calculated using RTC real-time clock modules 5
Body is as follows：
The intake of high pressure disconnected breaker open operation, combined floodgate and energy storage motor is sentenced in real time, and when primary cut-out separating brake, close a floodgate behaviour
When work terminates or energy storage motor starts from power cut-off, acquisition action starts and tied control monitoring terminal microcontroller 2 successively
The temporal information at beam moment, the temporal information at release moment is made the difference with acting the temporal information of initial time, then obtained
The working time of primary cut-out separating brake time, closing time and energy storage motor；
According to the opening time and closing time of obtained primary cut-out, the temporal information now obtained has three-phase respectively
Information (the T of contactOPEN_A、TOPEN_B、TOPEN_COr TClose_A、TClose_B、TClose_C), wherein first three items are respectively A, B, C three-phase
The opening time of contact, latter three be respectively A, B, C three-phase contact closing time；
Three-phase opening time is made the difference two-by-two, obtains A-B separating brake not the time same period, the B-C time not same period, C-
The A separating brake not time same period, the maximum in these three values is taken, that is, obtains the not time same period of high-voltage circuit breaker lock；
Three-phase closing time is made the difference two-by-two, obtains A-B not the time same period, B-C time combined floodgate phase, the C- of closing a floodgate
The A combined floodgate not time same period, the maximum in these three values is taken, that is, obtains the not time same period of high voltage circuit breaker closing.
Step 4, after the completion for the treatment of step 3, monitor the temperature rise shape of High Voltage Circuit Breaker Contacts on-line by the way of being wirelessly transferred
Condition, specifically implement according to following steps：
The temperature rise monitoring of step 4.1, primary cut-out passes through the sense temperature signal of temperature sensor 17, temperature sensor 17
With the property that different resistances are presented under different temperatures environment, after Wheatstone bridge is changed, temperature signal is converted into electricity
Signal is pressed, obtains the temperature information of High Voltage Circuit Breaker Contacts, single-chip microcomputer minimum is being transformed into by the isolation of light-coupled isolation module 19
The level range that system 18 can identify, magnitude of voltage is read out by single-chip minimum system 18；
Step 4.2, after the completion for the treatment of step 4.1, after single-chip minimum system 18 reads magnitude of voltage, according to temperature sensor
17 characteristic, table look-up to obtain the actual temperature value of High Voltage Circuit Breaker Contacts, and continuous 10 groups of temperature of reading in each collecting temperature
Angle value carries out data processing to it, obtains more accurate temperature value；
The processing of temperature data is using two peaks of removing and two minimums, the average value for asking for remaining 6 data
Method；
Step 4.3, after step 4.2 obtains temperature data, pass through eeprom memory 20 and carry out temperature data and time
The storage of information, and monitoring terminal microcontroller 2 is sent data to by radio receiving transmitting module 10.
Step 5, after step 1~step 4, monitoring terminal microcontroller 2 is divided, combined floodgate contact is during divide-shut brake
Average speed and maximal rate, the separating brake not time same period, close a floodgate the not time same period, point, closing coil maximum current, energy storage electricity
Machine starting current, branch wire time, these parameters of contact temperature rise value；By Flash modules 3 by data storage, prevent power down from losing
Lose, and data are uploaded to by human-computer interaction module 11 by CAN module 7 and shown, while uploaded data by ethernet module 8
To Surveillance center 16, long-range monitoring is carried out.
Primary cut-out intelligent monitor system of the present invention, by primary cut-out action when moving contact mechanical property,
Temperature rise value carries out sampling processing, finally gives the characteristic parameter that can reflect primary cut-out real-time running state and recording is bent
Line, characteristic information is uploaded to by human-computer interaction module 11 or Surveillance center 16 by CAN, ether net mode.In order to ensure gained
To characteristic information can accurately reflect the state of primary cut-out, employ based on Wavelet Algorithm, slide in the present invention
The data processing technique of average algorithm, filter out in primary cut-out action process because the interference of mechanical oscillation or electric signal is led
The spike of cause, the reliability and accuracy that period parameters calculate after guarantee；Slope Method combination median method is employed simultaneously asks high
The thinking of voltage breaker divide-shut brake speed, the high-voltage circuit-breaker switching on-off contact speed obtained by ensureing are more accurate.
Primary cut-out intelligent monitor system of the present invention, by installing straight-line displacement under primary cut-out three-phase moving contact
Sensor 12, concatenated with the respective primary circuit of energy storage motor into Hall current transformer in high-voltage circuit breaker, closing coil
12, temperature transducer 17 etc. is installed in three-phase upper and lower contact, obtains the change in displacement of primary cut-out three-phase contact in real time, point,
The curent change of closing coil and energy storage motor, and the changing condition of the temperature value of three-phase contact.It is real according to primary cut-out
The state of border operation, can be real with reference to data processing algorithms such as Wavelet-denoising Method, sliding average method, Slope Method combination median methods
Now to the accurate calculating of primary cut-out characteristic parameter, and reach the purpose that ground accurate judgement is diagnosed to circuit breaker failure.
Claims (10)
1. mechanical characteristic of high-voltage circuit breaker monitoring system, it is characterised in that include monitoring terminal microcontroller (2), the prison
Survey terminal microcontroller (2) respectively connect RTC real-time clock modules (5), crystal oscillator (9), Flash modules (3), SRAM module (4),
Watchdog module (10) and radio receiving transmitting module (6), radio receiving transmitting module (6) the connection monitoring temperature rise of contact terminal (21)；
The monitoring terminal microcontroller (2) connects signal transducer (22) by ADC；The monitoring terminal microcontroller (2),
Monitoring temperature rise of contact terminal (21) and signal transducer (22) are connected with power module (1)；Monitoring terminal microcontroller (2) is logical
Cross CAN module (7) to be connected with human-computer interaction module (11), the monitoring terminal microcontroller (2) also passes through ethernet module (8)
It is connected with Surveillance center (16).
2. mechanical characteristic of high-voltage circuit breaker monitoring system according to claim 1, it is characterised in that the ADC and
RTC real-time clock modules (5) are embedded in monitoring terminal microcontroller (2).
3. mechanical characteristic of high-voltage circuit breaker monitoring system according to claim 1 or 2, it is characterised in that the monitoring is eventually
End microcontroller (2) uses STM32F407ZGT6 chips.
4. mechanical characteristic of high-voltage circuit breaker monitoring system according to claim 1, it is characterised in that the wireless receiving and dispatching mould
Block (10) is 433MHz radio receiving transmitting modules.
5. mechanical characteristic of high-voltage circuit breaker monitoring system according to claim 1, it is characterised in that the signal transducer
(22) linear optical coupling (15) being connected with ADC, is included, the linear optical coupling (15) connects signal conditioning circuit (14),
The signal conditioning circuit (14) is connected to linear displacement transducer (12), Hall current transformer (13)；
The linear displacement transducer (12) is provided with three, is respectively arranged in A, B, C three-phase contact machinery of primary cut-out
In structure, for monitoring each phase moving contact action message；
The Hall current transformer (13) is provided with three, gathers closing coil action current, switching winding action electricity respectively
Stream and energy storage motor action current.
6. mechanical characteristic of high-voltage circuit breaker monitoring system according to claim 1, it is characterised in that the contact temperature rise prison
Terminal (21) is surveyed, includes the single-chip minimum system (18) being connected with radio receiving transmitting module (10), the minimum system of the single-chip microcomputer
System (18) is connected to eeprom memory (20), multiple light-coupled isolation modules (19), each light-coupled isolation module
(19) temperature sensor (17) is circumscribed with, each temperature sensor (17) connection primary cut-out A phase upper contact heads.
7. mechanical characteristic of high-voltage circuit breaker monitoring system according to claim 6, it is characterised in that the temperature sensor
(17) it is resistance temperature detector.
8. the method being monitored using mechanical characteristic of high-voltage circuit breaker monitoring system to mechanical characteristic of high-voltage circuit breaker, its feature
It is, specifically implements according to following steps：
Step 1, three when obtaining by linear displacement transducer (12), Hall current transformer (13) primary cut-out action respectively
Phase contact stroke signal, divide-shut brake coil current signal, energy storage motor signal；By the signal value of respective passage through signal condition electricity
Road (14) is isolated after being filtered enhanced processing by linear optical coupling (15), is re-fed into monitoring terminal microcontroller (2) and is adopted
The data got are simultaneously carried out Wavelet Denoising Method processing by sample, are specifically implemented according to following steps：
Based on all signals for needing storage reclosing, using embedded (12) position high-precision AD module, it is logical to set each simulation
The sample frequency in road is 100KHz, gathers 3 seconds prolonged 30000 points of working values；
Step 1.1, according to the type of action that primary cut-out is judged in six passages each 30000 points of big array, with reference to height
The actual operating state of voltage breaker, it is divided into following five kinds of situations：
A) separating brake；B) close a floodgate within 0.3 second after separating brake；C) close a floodgate within 0.3 second after separating brake, if still having failure, separating brake again；D) close
Lock；If faulty, separating brake after e) closing a floodgate；
According to above-mentioned five kinds of situations, the data of six analog acquisition passages are classified；
Step 1.2, according to the different type of action of step 1.1 mesohigh breaker, data cutout is carried out to LIULUTONG road, will be cut
In the caching array that the signal deposit got is set, because opening time is usually no more than 50ms, closing time does not surpass typically
100ms is crossed, sets the buffer storage length of separating brake data as 100ms, i.e. 1000 points, the buffer storage length of combined floodgate data is 150ms, i.e.,
1500 points；
In order to handle the above situation c), caching array is divided into separating brake caching 0 and separating brake caches 1 two groups；
The data deposit separating brake caching 0 that first time separating brake is truncated to, the data deposit separating brake that second of separating brake is truncated to is delayed
Deposit 1；All deposit combined floodgate caches combined floodgate data；
Step 1.3, Wavelet Denoising Method processing is carried out to the data being truncated in caching, establish the specific steps of wavelet scaling function such as
Under：
Step a, the Decomposition order N of Wavelet Denoising Method is determined, and chooses wavelet threshold function；
Step b, after the completion for the treatment of step a, multinomial P (y)=P is selectedN(y)+yNR (1/2-y) >=0, wherein 0≤y≤1, PN
(y) meet R (- y)=- R (y), and meet supP (y)<22(N-1)；A selected real coefficient trigonometric polynomial Q (z) causes P
(sin2(ω/2))=| Q (eiω)|2；ChooseIn { hkBe scaling function coefficient；
Step c, after the completion for the treatment of step b, by coefficient substitute into corresponding in scaling function, that is, obtain the small echos under different resolution frequencies
The coefficient of scaling function；
Step d, after the completion for the treatment of step c, the coefficient for the high fdrequency component that will be filtered out is arranged to zero, now can interference signal is clear
Remove；
Step e, after the completion for the treatment of step d, the wavelet scaling function under remaining resolution frequency is added, by small echo signal weight
Structure, finally give the signal after filtering out noise；
Step 2, the data exported using sliding average method smoothing processing through step 1；
Step 3, after step 2, calculate separating brake average speed, closing speed, the divide-shut brake of moving contact in high voltage breaker respectively
Maximal rate, energy storage time, the time not same period of branch wire time and primary cut-out separating brake, high voltage circuit breaker closing are not
The time same period, specifically implement in accordance with the following methods：
According to the definition of primary cut-out parameter, contact separating brake average speed is preceding 6mm of the moving contact in primary cut-out separating brake
Average speed；Contact combined floodgate average speed is average speed of the moving contact in the whole stroke of breaker closing；Contact point,
Combined floodgate maximal rate is the maximal rate of moving contact whole stroke in breaker actuation of breaker；
The separating brake average speed computational methods of moving contact in high voltage breaker are specific as follows：
The point at High Voltage Circuit Breaker Contacts action 6mm moment is found, time when recording contact of breaker action 6mm positions is T, if
It is 0 to determine at the time of breaker origination action, then the separating brake average speed calculation formula of moving contact in high voltage breaker is：VOpen=6/
T；
The closing speed computational methods of moving contact in high voltage breaker are specific as follows：
The point at High Voltage Circuit Breaker Contacts release moment is found, and the stroke value recorded at that time is S4；Using initial position as rise
Beginning stroke value S3, set high voltage circuit breaker closing act initial time as 0, High Voltage Circuit Breaker Contacts combined floodgate finish time be
tClose, then the combined floodgate average speed calculation formula of moving contact in high voltage breaker be：VClose=(S4-S3)/tClose；
The divide-shut brake maximal rate computational methods of moving contact in high voltage breaker, it is specific as follows：
The counting period value 5ms of run-length data, i.e. 50 points are determined, sets the stroke value of t as S (t+50) shift value,
The then instantaneous velocity V of ttFormula is as follows：
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<mi>V</mi>
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<mo>(</mo>
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<mn>50</mn>
<mo>)</mo>
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<mn>50</mn>
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<mo>(</mo>
<mn>1</mn>
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</mrow>
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Using 50 points as material calculation, calculated according to formula (1-1) since the 50th point that High Voltage Circuit Breaker Contacts act,
At the time of moving contact in high voltage breaker tenth skill is arrived in calculating always, the Instantaneous velocity values at each moment can be obtained；In order to protect
The Instantaneous velocity values that card finally obtains are more accurate, and 5 Instantaneous velocity values of maximum are found in these Instantaneous velocity values, use
Median method, that of selection among this 5 maximums is as final moving contact divide-shut brake maximum speed value；
Energy storage time, the branch wire time of primary cut-out are calculated using RTC real-time clock modules (5), its calculating process is specific
It is as follows：
The intake of high pressure disconnected breaker open operation, combined floodgate and energy storage motor is sentenced in real time, when primary cut-out separating brake, closing operation knot
When beam or energy storage motor start from power cut-off, acquisition acts beginning and end to control monitoring terminal microcontroller (2) successively
The temporal information at moment, the temporal information at release moment is made the difference with acting the temporal information of initial time, then obtains height
The working time of voltage breaker opening time, closing time and energy storage motor；
According to the opening time and closing time of obtained primary cut-out, the temporal information now obtained has three-phase contact respectively
Information be TOPEN_A、TOPEN_B、TOPEN_COr TClose_A、TClose_B、TClose_C, wherein first three items are respectively A, B, C three-phase contact
Opening time, latter three be respectively A, B, C three-phase contact closing time；
Three-phase opening time is made the difference two-by-two, obtains A-B separating brake not the time same period, the B-C time not same period, C-A
The separating brake not time same period, the maximum in these three values is taken, that is, obtains the not time same period of high-voltage circuit breaker lock；
Three-phase closing time is made the difference two-by-two, obtains A-B combined floodgate not the time same period, B-C close a floodgate phase time, C-A
Close a floodgate the not time same period, take the maximum in these three values, that is, obtain the not time same period of high voltage circuit breaker closing；
Step 4, after the completion for the treatment of step 3, monitor the temperature rise situation of High Voltage Circuit Breaker Contacts on-line by the way of being wirelessly transferred；
Step 5, after step 1~step 4, monitoring terminal microcontroller (2) is divided, combined floodgate contact is during divide-shut brake
Average speed and maximal rate, the separating brake not time same period, close a floodgate the not time same period, point, closing coil maximum current, energy storage motor
Starting current, branch wire time, these parameters of contact temperature rise value；By Flash modules (3) by data storage, prevent power down from losing
Lose, and data are uploaded to by human-computer interaction module (11) by CAN module (7) and shown, while by ethernet module (8) by number
According to Surveillance center (16) is uploaded to, long-range monitoring is carried out.
9. according to claim 8 entered using mechanical characteristic of high-voltage circuit breaker monitoring system to mechanical characteristic of high-voltage circuit breaker
The method of row monitoring, it is characterised in that the step 2 is specifically implemented in accordance with the following methods：
Setting data be in certain a bit of section M close to stable, as certain local average, to reduce error and noise,
And make continuous local average on the M of minizone one by one along the N number of data of total length；
After step 1, inserted obtained local mean values as the data after smooth in original buffer area, when whole caching
Calculating terminates, and also having M-1 point can not calculate, and it is average that this M-1 point and previous point done into last time, and calculating
To average value all insert remaining M-1 position in buffer area as last value, it is smooth so far to obtain all processes
Data afterwards；
STM32F407 chips in monitoring terminal microcontroller (2) are used to carry out always the data after denoising and smoothing processing
Converge, storage, then carry out data analysis calculating processing, finally give including：Divide, combined floodgate contact being averaged during divide-shut brake
Speed and maximal rate, divide, closing coil maximum current, energy storage motor starting current, branch wire time and contact temperature rise value.
10. according to claim 8 utilize mechanical characteristic of high-voltage circuit breaker monitoring system to mechanical characteristic of high-voltage circuit breaker
The method being monitored, it is characterised in that the step 4 is specifically implemented according to following steps：
The temperature rise monitoring of step 4.1, primary cut-out passes through temperature sensor (17) sense temperature signal, temperature sensor (17)
With the property that different resistances are presented under different temperatures environment, after Wheatstone bridge is changed, temperature signal is converted into electricity
Signal is pressed, obtains the temperature information of High Voltage Circuit Breaker Contacts, single-chip microcomputer is being transformed into most by light-coupled isolation module (19) isolation
The level range that mini system (18) can identify, magnitude of voltage is read out by single-chip minimum system (18)；
Step 4.2, after the completion for the treatment of step 4.1, after single-chip minimum system (18) reads magnitude of voltage, according to temperature sensor
(17) characteristic, table look-up to obtain the actual temperature value of High Voltage Circuit Breaker Contacts, and (10) are continuously read in each collecting temperature
Group temperature value carries out data processing to it, obtains more accurate temperature value；
The processing of temperature data is done using the average value for removing two peaks and two minimums, asking for remaining 6 data
Method；
Step 4.3, after step 4.2 obtains temperature data, pass through eeprom memory (20) and carry out temperature data and time and believe
The storage of breath, and monitoring terminal microcontroller (2) is sent data to by radio receiving transmitting module (10).
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