CN109991464A - It is a kind of to use contact and noncontacting proximity sensor and its electricity-testing method - Google Patents
It is a kind of to use contact and noncontacting proximity sensor and its electricity-testing method Download PDFInfo
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- CN109991464A CN109991464A CN201910200014.0A CN201910200014A CN109991464A CN 109991464 A CN109991464 A CN 109991464A CN 201910200014 A CN201910200014 A CN 201910200014A CN 109991464 A CN109991464 A CN 109991464A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
- G01R19/155—Indicating the presence of voltage
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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Abstract
The present invention relates to high voltage electroscope electricity-testing method technical fields, use contact and noncontacting proximity sensor and its electricity-testing method more particularly to a kind of, are a kind of electricity-testing methods of the high voltage electroscope of dual sensor.Part is monitored including signal acquisition module, contact signal conditioning circuit, non-contact type signal conditioning circuit, signal processing circuit, sound light alarming circuit, bluetooth sending module and mobile phone；The two paths of signals of contact and noncontacting proximity sensor output is acquired, and logic judgment is carried out to two paths of signals.The present invention judges that current type of alarm is contact alarm or contactless alarm according to the frequency of alarm signal, and the distance of electroscope Yu equipment to be tested is judged according to the different frequency of alarm signal.So that care provider is learnt electrical verification in real time as a result, greatly improving the confidence level and reliability of electrical verification result, increase the safety of electrical verification service personnel, improve the correctness of electrical verification result, reduces false alarm rate, be effectively detected whether Devices to test charges.
Description
Technical field
The present invention relates to high voltage electroscope electricity-testing method technical field, more particularly to it is a kind of using contact with it is non-contact
Formula sensor and its electricity-testing method are a kind of electricity-testing methods of the high voltage electroscope of dual sensor.
Background technique
High voltage electroscope be it is a kind of for high-tension electricity maintenance power equipment, for judge Awaiting Overhaul equipment whether band
Electricity.High voltage electroscope is divided into contact and non-contact type electricity checking device, and wherein contact electroscope, which passes through, directly contacts equipment to be tested,
Electrical verification is realized using space stray capacitance voltage divider principle, is most widely used.Non-contact type electricity checking device passes through acquisition space
Electric field strength judges whether Devices to test charges, and since technology is not mature enough, still belongs to conceptual phase at present.
In contact electroscope use process, since the equipotential line that the contact probe head of contact electroscope is crossed over is distributed not
Together, there is wrong report police region when therefore contact high voltage electroscope operates and refuse to submit police region, in wrong report police region and refuse to submit police region
Electrical verification result can malfunction.Non-contact type electricity checking device since the electric field strength of acquisition is easy interference by charging equipment around,
Therefore it is easy to issue false alarm.
Therefore high voltage electroscope in the prior art there are false alarm, refuse to submit the disadvantages of alert, refuse to submit police appearance and easily cause maintenance
The erroneous judgement of personnel and personal safety accident occurs, and false alarm can then delay the valuable repair time, bring to the country and people
Huge property loss.
Summary of the invention
For above-mentioned problems of the prior art, contact and non-contact sensor are used the present invention provides a kind of
Device and its electricity-testing method, mesh be in order to solve the problems, such as it is above-mentioned exist in the prior art false alarm, refuse to submit it is alert, can be in high pressure
Contactless and contact electrical verification mode is passed sequentially through under environment and whether verifies object with high-voltage electricity, while can also be by electrical verification knot
Fruit is sent to cellphone monitoring end and for guardian observes real-time electrical verification as a result, greatly improving the safety of electrical verification, reliability and accurate
Degree reduces false alarm and refuses to submit alert generation.
In order to achieve the above-mentioned object of the invention, the present invention is achieved through the following technical solutions:
A kind of electricity-testing method using contact and noncontacting proximity sensor, including signal acquisition module, contact signal condition
Circuit, non-contact type signal conditioning circuit, signal processing circuit, sound light alarming circuit, bluetooth sending module and mobile phone monitoring
Part；The two paths of signals of contact and noncontacting proximity sensor output is acquired, and logic judgment is carried out to two paths of signals.
The signal acquisition module is respectively by the signal acquisition of metal contact probe head acquisition contact electrical verification, capacity plate antenna type
The signal acquisition of electric-field sensor acquisition non-contact type electricity checking.
The contact signal conditioning circuit includes current-limiting protection circuit, electric current Zoom module circuit and voltage regulation filtering electricity
Road.
The non-contact type signal conditioning circuit includes reduction voltage circuit, signal follower circuit, filter circuit and rectification
Circuit, the conditioning of the induced voltage signal for the output of capacity plate antenna type electric-field sensor.
The signal processing circuit receives the electricity of two-way sensor signal conditioning circuit output using a single-chip microcontroller simultaneously
Signal is pressed, and calculates separately out the virtual value of two-way voltage signal, size logic is carried out according to calculated two-way voltage signal
Judgement, exports the different alarm signals of corresponding frequencies；According to the difference of alarm signal frequency, judge type of alarm for contact
Formula alarm or contactless alarm, when sound-light alarm frequency be 2Hz, then be contact alarm, if sound-light alarm frequency is big
It is then contactless alarm in 5Hz；Distance of the electroscope apart from object under test can also be judged according to the difference of frequency.
The bluetooth sending module uses the Bluetooth chip based on BLE technology, the data of processor output is passed through wireless
Mode is sent to mobile phone terminal, carries out data processing by mobile phone terminal monitoring of software.
The mobile phone monitoring is helps live care provider to be monitored the electrical verification result of service personnel, to ensure maintenance
The safety of personnel.
Being achieved in that for the mobile phone monitoring side establishes bluetooth connection by a cell phone client App and electroscope,
The data of contact and non-contact type electricity checking result are sent to mobile phone by bluetooth by electroscope, are parsed by cell phone client App
It shows respectively afterwards, and output of vibration and voice prompting；That is: site examining and repairing is tested for care provider in described mobile phone monitoring side
The safety custody of electric personnel, is achieved in that through cell phone client receiving bluetooth, parses blue-teeth data association again later
View obtains contact and non-contact type electricity checking data, and contact and non-contact data pass through dial plate animation respectively and dynamically show
Show, and contact and non-contact data are subjected to logic judgment, so that mobile phone is issued different languages according to the result of logic judgment
Sound warning reminding and vibration prompting；Care provider guards electrical verification service personnel according to the prompt of mobile phone monitoring side, provides
Necessary safety prompt function.
It is described it is a kind of use contact and noncontacting proximity sensor, be connected to by one end insertion of contact probe head 1 it is flat
It is attached in annular space among the capacitive electric-field sensor 2 of plate by fixing bolt 3, contact probe head connection contact is led
5 output voltages of line 6 and electroscope ground, provide detection signal for touch sensor；The induction of capacity plate antenna type electric-field sensor 2
Voltage is mentioned by being connected to the contactless conducting wire 4 of 2 upper and lower ends of capacity plate antenna type electric-field sensor for noncontacting proximity sensor
For detecting signal；Contact probe head 1 and the capacitive electric-field sensor 2 of plate combine, and two of them sensor works independently, contact
After 1 contact charged object of probe, contact probe head 1 and electroscope stray capacitance between 5 get a voltage, which is used for
The detection of subsequent touch formula signal conditioning circuit；Contact probe head with passing through contact conducting wire 6 and electroscope 5 output voltages；Plate
Capacitive electric-field sensor 2 is annular；Induced voltage of the capacity plate antenna type electric-field sensor 2 under electric field environment passes through contact
Conducting wire 6 exports, and detects for subsequent conditioning circuit；The voltage that stray capacitance is got between contact probe head and electroscope ground passes through current-limiting protection
Circuit, electric current export after scaling circuit and filter circuit of pressure-stabilizing to the port ADC1 of single-chip microprocessor MCU；And capacity plate antenna type electric field passes
2 induced voltage of sensor is exported after reduction voltage circuit, filter circuit, rectification circuit to the port ADC2 of single-chip microprocessor MCU；Single-chip microcontroller
To the port ADC1 and the port ADC2 input signal after AD conversion, judge using program, exports corresponding sound-light alarm letter
Number.
The non-contact type signal conditioning circuit, wherein resistance R1 and resistance R2 composition electric resistance partial pressure and impedance matching are electric
Road, resistance R1 and resistance R2 are respectively the big resistance of 51M Ω and 10M Ω, and the two uses big resistance to capacity plate antenna type electric field
Sensor carries out impedance matching, while the ratio of the two forms 1/6.1 intrinsic standoff ratio, and sensor output voltage is down to single-chip microcontroller
The range that can be read；Amplifier U1 is voltage follower circuit, by increasing input resistance, reduces output resistance to improve circuit band
Loading capability；Resistance R3, resistance R4, resistance R5, resistance R6, capacitor C1, capacitor C2 and amplifier U2 form active second-order low-pass filter
Circuit, the high-frequency electromagnetic interference signal received to filter out sensor, residual circuit is precise rectification circuit, micro- for rectifying
Weak voltage signal, convenient for the signal-obtaining of single-chip microcontroller；
R13 is the big resistance of 1M Ω in the contact signal conditioning circuit, for limiting current protection subsequent conditioning circuit；Resistance
R14, resistance R15, triode Q1 form electric current Zoom module, and when contact probe head touches electrical body, triode Q1 can be periodically
Conducting；Resistance R16, resistance R17, resistance R18, capacitor C3 and capacitor C4 constitute filter circuit of pressure-stabilizing, so that period on-off
The voltage of triode Q1 output can stablize output, and the port ADC2 obtains burning voltage；
The sound light alarming circuit carries out light alarm using four LED light, is located at electroscope outer casing bottom, and group circularizes alarm
LED light；LED light is all made of triode with buzzer and is driven in warning circuit；
After the power on circuitry of the signal processing module, single-chip microcontroller carries out just the port ADC1, the port ADC2 and timer TIM1
Beginningization, TIM1 are initialized as 100us and interrupt primary, an interruption port ADC1 of reading and the port ADC2, and every 100 numbers every time
The port ADC1 and the port ADC2 are obtained according to a virtual value is calculated, extremely further according to capacity plate antenna type electric-field sensor output voltage
The conversion coefficient k1 and contact signal conditioning circuit output voltage of the port ADC1 are put down to the conversion coefficient k2 of the port ADC2
The capacitive electric-field sensor output voltage U1=ADC1*k1 of plate and contact signal conditioning circuit output voltage U2=ADC2*k2 is right
The voltage U1 and voltage U2 being converted to carry out logic judgment: as voltage U2 > 1.5V, then it represents that metal contact probe head touches band
Electric body, the low frequency acousto-optic alert frequency for exporting 2Hz indicate contact electrification；As U2≤1.5V, the size of voltage U1 is at this moment judged again,
Alarm threshold value voltage U0.7, voltage U0.5, voltage U0.3, the voltage U0.1 of each distance obtained with experimental result are compared
Compared with, if voltage U1 < U0.7, does not alarm, otherwise according to locating voltage range issue corresponding frequency sound-light alarm believe
Number, and the higher acousto-optic alert frequency of voltage of voltage U1 is higher；
The bleeder circuit of resistance R30 and resistance R31 composition, output voltage AD are used as with reference to electricity in the bluetooth sending module circuit
Pressure monitors remaining capacity for Bluetooth chip, and R32 and KEY form voltage pull-up circuit, and when KEY is pressed, bluetooth module is restarted；U1
For Bluetooth chip, TXD1 and RXD1 are respectively connected to the sending port TXD and receiving port RXD of single-chip microcontroller, for the transmission of data；
The monitoring side interface layout of the cellphone monitoring includes three parts, shows the connection status of bluetooth equipment, contact respectively
The voltage value of electrical verification and its dial plate are shown, the voltage value of non-contact type electricity checking and its dial plate are shown；The wherein maximum of dial plate
Voltage value when range is electroscope and charging equipment distance is 0；
The workflow of the mobile phone monitoring side are as follows: before starting electrical verification, power grid care provider opens bluetooth discovery indigo plant with mobile phone terminal
Tooth equipment just carries out bluetooth connection after detecting required electroscope bluetooth equipment, and in connection after bluetooth equipment, bluetooth is opened
New thread carries out the parsing of data protocol, and parsing obtains the voltage value of contact electrical verification and the voltage value of non-contact type electricity checking,
The current contact of cellphone monitoring end interface display and contactless voltage value and dial plate animation；Later to after parsing contact with
Contactless voltage value carries out logic judgment, when contact voltage reaches 1.0V, that is, shows that electroscope and high-tension apparatus carry out
Contact and high-tension apparatus charges, then mobile phone shakes and issues voice prompting；Otherwise judge whether non-contact type electricity checking voltage is big
In 1.4V, when non-contact type electricity checking voltage is greater than 1.4V, illustrate safety of the electroscope at a distance from charging equipment less than 0.7m away from
From then mobile phone shakes and issues voice prompting；Otherwise, mobile phone does not do voice and vibration prompting；
The electricity-testing method be by electroscope close to Devices to test when, electroscope when apart from Devices to test 0.1m-0.7m
If issuing the sound-light alarm that frequency is higher than 5Hz, and higher apart from the nearlyr sound-light alarm frequency of Devices to test, then illustrate non-contact
Formula electrical verification issues alarm, and Devices to test may be charged, further be contacted the metal contact probe head of electroscope with Devices to test, such as
Electroscope sound-light alarm frequency is reduced to 2Hz to fruit at this time, then illustrates that contact electrical verification issues alarm, and Devices to test charges really,
Else if electroscope still issues the sound-light alarm of high frequency when contact, then illustrate at this time to be still that non-contact type electricity checking issues report
Alert, Devices to test may be not charged, needs to carry out neighbouring other equipment electrical verification to confirm whether Devices to test is not charged；If
When electroscope is apart from Devices to test 0.1m-0.7m, electroscope does not issue sound-light alarm, illustrates that non-contact type electricity checking is not sent out
It alarms out, Devices to test may be not charged, further contacts the metal probe of electroscope with Devices to test, if electrical verification at this time
Device still without issuing sound-light alarm, illustrates that Devices to test is really not charged, otherwise, illustrates that Devices to test may charge, again
Detection.
Compared with prior art, it advantages of the present invention and has the beneficial effect that:
The present invention can judge that current type of alarm is contact alarm or contactless report according to the frequency of alarm signal
It is alert, moreover it is possible to the distance of electroscope Yu equipment to be tested is judged according to the different frequency of alarm signal.Bluetooth communication of the invention
Care provider can be made to learn mentioning as a result, providing necessary safety to electrical verification service personnel for electrical verification in real time with mobile phone monitoring
It wakes up.The confidence level that electrical verification result can be greatly improved using the electricity-testing method of contact and noncontacting proximity sensor of the invention
And reliability, the shortcomings that traditional electroscope refuses to submit alert and false alarm is overcome, the safety of electrical verification service personnel is increased.
The present invention is carried out according to the size of contact signal conditioning circuit and non-contact type signal conditioning circuit output voltage
The electrification situation and electroscope for judging current Devices to test pass through bluetooth at a distance from current Devices to test, while by electrical verification result
The mode of wireless transmission is sent to mobile phone monitoring side and guards for care provider, ensures the safety of electrical verification personnel, of the invention
Electricity-testing method can not only be reduced warning circuit to all the way by two-way, and it is dry to reduce two-way warning circuit bring of alarming simultaneously
It disturbs, moreover it is possible to be accurately judged to current type of alarm.Simultaneously the present invention in novel electricity-testing method and dual sensor introducing significantly
The correctness for improving electrical verification result, reduces false alarm rate, can be effectively detected whether Devices to test charges.
Detailed description of the invention
Understand for the ease of those of ordinary skill in the art and implement the present invention, with reference to the accompanying drawing and specific embodiment
The present invention is described in further detail, it is to be understood that protection scope of the present invention is not by the limit of specific embodiment
System.
Fig. 1 is sensor of the invention structure chart；
Fig. 2 is the working principle of the invention figure；
Fig. 3 is non-contact type signal conditioning circuit of the invention；
Fig. 4 is contact signal conditioning circuit of the invention；
Fig. 5 is sound light alarming circuit of the invention；
Fig. 6 is the flow chart of signal processing module of the invention；
Fig. 7 is bluetooth sending module circuit of the invention；
Fig. 8 is the interface layout figure at cellphone monitoring end of the invention；
Fig. 9 is the work flow diagram at cellphone monitoring end of the invention；
Figure 10 is the electrical verification process of electricity-testing method of the present invention.
In figure: contact metal probe 1, capacity plate antenna type electric-field sensor 2, fixing bolt 3, contactless conducting wire 4 are tested
Electric appliance 5, contact conducting wire 6.
Specific embodiment
A kind of electricity-testing method using contact and noncontacting proximity sensor of the present invention, comprising: signal acquisition module, contact
Formula signal conditioning circuit, non-contact type signal conditioning circuit, signal processing circuit, sound light alarming circuit, bluetooth sending module with
And mobile phone monitors part.The present invention acquire contact and noncontacting proximity sensor output two paths of signals, and to two paths of signals into
Row logic judgment can greatly improve the correctness and reliability of electrical verification result.
The signal acquisition module is acquired the signal acquisition of contact electrical verification, capacity plate antenna by metal contact probe head 1 respectively
Type electric-field sensor 2 is used for the signal acquisition of non-contact type electricity checking.
The contact signal conditioning circuit includes current-limiting protection circuit, electric current Zoom module circuit and voltage regulation filtering electricity
Road.
The non-contact type signal conditioning circuit includes reduction voltage circuit, signal follower circuit, filter circuit and rectification
Circuit is mainly used for the conditioning of the induced voltage signal of capacity plate antenna type electric-field sensor output.
The signal processing circuit receives the electricity of two-way sensor signal conditioning circuit output using a single-chip microcontroller simultaneously
Signal is pressed, and calculates separately out the virtual value of two-way voltage signal, size logic is carried out according to calculated two-way voltage signal
Judgement, exports the different alarm signals of corresponding frequencies.According to the difference of alarm signal frequency, judge type of alarm for contact
Formula alarm or contactless alarm, when sound-light alarm frequency be 2Hz, then be contact alarm, if sound-light alarm frequency is big
It is then contactless alarm in 5Hz.Distance of the electroscope apart from object under test can also be judged according to the difference of frequency.
The bluetooth sending module uses the Bluetooth chip 4.0 based on BLE technology, and the data that processor exports are passed through nothing
Line mode is sent to mobile phone terminal, carries out data processing by mobile phone terminal monitoring of software.
The mobile phone monitoring is helps live care provider to be monitored the electrical verification result of service personnel, to ensure maintenance
The safety of personnel.
The implementation of the mobile phone monitoring side are as follows: bluetooth connection is established by a cell phone client App and electroscope,
The data of contact and non-contact type electricity checking result are sent to mobile phone by bluetooth by electroscope, are parsed by cell phone client App
It shows respectively afterwards, and output of vibration and voice prompting.That is: site examining and repairing is tested for care provider in described mobile phone monitoring side
The safety custody of electric personnel, is achieved in that through cell phone client receiving bluetooth, parses blue-teeth data association again later
View obtains contact and non-contact type electricity checking data, and contact and non-contact data pass through dial plate animation respectively and dynamically show
Show, and contact and non-contact data are subjected to logic judgment, so that mobile phone is issued different languages according to the result of logic judgment
Sound warning reminding and vibration prompting.Care provider guards electrical verification service personnel according to the prompt of mobile phone monitoring side, provides
Necessary safety prompt function.
Embodiment 1:
As shown in Figure 1, Fig. 1 is sensor of the invention structure chart.Its sensor of electroscope of the invention is visited using metal contact
First 1 and the mode that combines of the capacitive electric-field sensor 2 of plate, two of them sensor work independently, the contact electrification of contact probe head 1
After object, contact probe head 1 and electroscope stray capacitance between 5 get a voltage, which believes for subsequent touch formula
The detection of number conditioning circuit.Contact probe head with passing through contact conducting wire 6 and electroscope 5 output voltages.Capacity plate antenna type electric field passes
Sensor 2 is annular, is fixedly connected with contact probe head 1, and one end insertion of contact probe head 1 is connected to capacity plate antenna type electric-field sensor
It is fixedly connected in annular space among 2 by fixing bolt 3.Capacity plate antenna type electric-field sensor 2 is under electric field environment
Induced voltage by contact conducting wire 6 export, for subsequent conditioning circuit detect.
One end insertion of metal contact probe head 1, which is connected in the annular space asked in capacity plate antenna type electric-field sensor 2, leads to
It crosses fixing bolt 3 to be fixedly connected, contact probe head connection contact conducting wire 6 with electroscope 5 is connected and output voltage, is
Touch sensor provides detection signal；The induced voltage of capacity plate antenna type electric-field sensor 2 is by being connected to capacity plate antenna type
The contactless conducting wire 4 of 2 upper and lower ends of electric-field sensor provides detection signal for noncontacting proximity sensor.
As shown in Fig. 2, Fig. 2 is the working principle of the invention figure.Contact probe head 1 and electroscope ground stray capacitance point between 5
The voltage obtained passes through current-limiting protection circuit, and electric current exports after scaling circuit and filter circuit of pressure-stabilizing to the end ADC1 of single-chip microprocessor MCU
Mouthful.And 2 induced voltage of capacity plate antenna type electric-field sensor exports after reduction voltage circuit, filter circuit, rectification circuit to monolithic
The port ADC2 of machine MCU.Single-chip microcontroller after AD conversion, sentences the port ADC1 and the port ADC2 input signal using program
It is disconnected, export corresponding sound and light alarm signal.
As shown in figure 3, Fig. 3 is non-contact type signal conditioning circuit of the invention.Wherein, resistance R1 and resistance R2 composition electricity
Resistance partial pressure and impedance matching circuit, resistance R1 and resistance R2 are respectively the big resistance of 51M Ω and 10M Ω, and the two uses big resistance
To carry out impedance matching to capacity plate antenna type electric-field sensor, the load capacity of electric-field sensor, while the ratio of the two are improved
The intrinsic standoff ratio for forming 1/6.1, is down to the range that single-chip microcontroller can be read for sensor output voltage.Amplifier U1 is voltage follower electricity
Road reduces output resistance by increasing input resistance to improve circuit load capacity.Resistance R3, resistance R4, resistance R5, resistance
R6, capacitor C1, capacitor C2 and amplifier U2 form active second-order low-pass filter circuit, the high-frequency electrical received to filter out sensor
Magnetic disturbance signal.Fig. 3 residual circuit is precise rectification circuit, for rectifying faint voltage signal, convenient for the signal of single-chip microcontroller
It reads.
As shown in figure 4, Fig. 4 is contact signal conditioning circuit of the invention, R13 is the big resistance of 1M Ω in figure, is used for
Limit current protection subsequent conditioning circuit.Resistance R14, resistance R15, triode Q1 form electric current Zoom module, when contact probe head contacts
To electrical body, triode Q1 can be periodically connected.Resistance R16, resistance R17, resistance R18, capacitor C3 and capacitor C4 are constituted surely
Filters pressing wave circuit, the voltage that the triode Q1 of period on-off is exported stablize output, and the port ADC2 obtains burning voltage.
As shown in figure 5, Fig. 5 is sound light alarming circuit of the invention, light alarm is carried out using four LED light, is located at electrical verification
Device outer casing bottom, group circularize alarm LED light.LED light is all made of triode with buzzer and is driven in warning circuit.
As shown in fig. 6, Fig. 6 is the process of signal processing module of the invention, after power on circuitry, single-chip microcontroller is to the end ADC1
Mouth, the port ADC2 and timer TIM1 are initialized, and TIM1 is initialized as 100us and interrupts once, and it is primary to interrupt reading every time
The port ADC1 and the port ADC2, and every 100 data calculate a virtual value and obtain the port ADC1 and the port ADC2, further according to flat
The capacitive electric-field sensor output voltage of plate to the port ADC1 conversion coefficient k1 and contact signal conditioning circuit output voltage
To the conversion coefficient k2 of the port ADC2, capacity plate antenna type electric-field sensor output voltage U1=ADC1*k1 and contact signal are obtained
Conditioning circuit output voltage U2=ADC2*k2 carries out logic judgment to the voltage U1 and voltage U2 that are converted to: when voltage U2 >
1.5V, then it represents that metal contact probe head touches electrical body, and the low frequency acousto-optic alert frequency for exporting 2Hz indicates contact electrification.When
At this moment U2≤1.5V judges the size of voltage U1 again, alarm threshold value voltage U0.7, the electricity of each distance obtained with experimental result
Pressure U0.5, voltage U0.3, voltage U0.1 are compared, if voltage U1 < U0.7, does not alarm, otherwise according to locating voltage
Section issues the sound and light alarm signal of corresponding frequency, and the higher acousto-optic alert frequency of voltage of voltage U1 is higher.
As shown in fig. 7, Fig. 7 is bluetooth sending module circuit of the invention, point of resistance R30 and resistance R31 composition in figure
Volt circuit, output voltage AD monitor remaining capacity as the reference voltage, for Bluetooth chip, R32 and KEY composition voltage pull-up in figure
Circuit, when KEY is pressed, bluetooth module is restarted.U1 is Bluetooth chip, and TXD1 and RXD1 are respectively connected to the sending port of single-chip microcontroller
TXD and receiving port RXD, for the transmission of data.
As shown in figure 8, Fig. 8 is the interface layout figure of mobile phone monitoring side of the invention, as shown, monitoring side interface layout
Comprising three parts, the connection status of bluetooth equipment is shown respectively, and the voltage value of contact electrical verification and its dial plate show, are non-contact
The voltage value of formula electrical verification and its dial plate are shown.Wherein the maximum range of dial plate be electroscope and charging equipment distance be 0 when
The voltage value of time.
As shown in figure 9, Fig. 9 is the work flow diagram of mobile phone monitoring side of the invention, and before starting electrical verification, power grid care provider
Bluetooth discovery bluetooth equipment is opened with mobile phone terminal and just carries out bluetooth connection after detecting required electroscope bluetooth equipment, is connected
After upper bluetooth equipment, bluetooth open new thread carry out data protocol parsing, parsing obtain contact electrical verification voltage value and
The voltage value of non-contact type electricity checking, mobile phone monitoring side interface can show that current contact and contactless voltage value and dial plate are dynamic
It draws.Later to after parsing contact and contactless voltage value carry out logic judgment, when contact voltage reaches 1.0V, i.e.,
Show that electroscope and high-tension apparatus have carried out contact and high-tension apparatus charges, then mobile phone shakes and issues " contact electrification, danger
Danger！" voice prompting.Otherwise judge whether non-contact type electricity checking voltage is greater than 1.4V, when non-contact type electricity checking voltage is greater than
1.4V illustrates that electroscope is less than the safe distance of 0.7m at a distance from charging equipment, then mobile phone shakes and issues " contactless band
Electricity is forbidden close " voice prompting.Otherwise, mobile phone does not do voice and vibration prompting.
As shown in Figure 10, Figure 10 is the electrical verification process of electricity-testing method of the present invention.Specifically using the electroscope in the present invention
When close to Devices to test, if electroscope issues the acousto-optic report that frequency is higher than 5Hz when apart from Devices to test 0.1m-0.7m
It is alert and higher apart from the nearlyr sound-light alarm frequency of Devices to test, then illustrate that non-contact type electricity checking issues alarm, Devices to test may
Electrification, further contacts the metal contact probe head of electroscope with Devices to test, if electroscope sound-light alarm frequency drops at this time
Down to 2Hz, then illustrate that contact electrical verification issues alarm, Devices to test charges really, else if electroscope is still sent out when contact
The sound-light alarm of high frequency out then illustrates at this time to be still that non-contact type electricity checking issues alarm, and Devices to test may be not charged, needs
Electrical verification is carried out to confirm whether Devices to test is not charged to neighbouring other equipment.If when electroscope is apart from Devices to test 0.1m-
Electroscope does not issue sound-light alarm when 0.7m, illustrates that non-contact type electricity checking does not issue alarm, and Devices to test may be not charged,
Further the metal probe of electroscope is contacted with Devices to test, if electroscope is said still without issuing sound-light alarm at this time
Bright Devices to test is really not charged, otherwise, illustrates that Devices to test may charge, detects again.
Claims (10)
1. a kind of electricity-testing method using contact and noncontacting proximity sensor, it is characterized in that: including signal acquisition module, contact
Formula signal conditioning circuit, non-contact type signal conditioning circuit, signal processing circuit, sound light alarming circuit, bluetooth sending module with
And mobile phone monitors part；The two paths of signals of contact and noncontacting proximity sensor output is acquired, and logic is carried out to two paths of signals
Judgement.
2. a kind of electricity-testing method using contact and noncontacting proximity sensor according to claim 1, it is characterized in that: institute
Signal acquisition module is stated respectively by the signal acquisition of metal contact probe head acquisition contact electrical verification, capacity plate antenna type electric-field sensor
Acquire the signal acquisition of non-contact type electricity checking.
3. a kind of electricity-testing method using contact and noncontacting proximity sensor according to claim 1, it is characterized in that: institute
Stating contact signal conditioning circuit includes current-limiting protection circuit, electric current Zoom module circuit and filter circuit of pressure-stabilizing.
4. a kind of electricity-testing method using contact and noncontacting proximity sensor according to claim 1, it is characterized in that: institute
Stating non-contact type signal conditioning circuit includes reduction voltage circuit, signal follower circuit, filter circuit and rectification circuit, for putting down
The conditioning of the induced voltage signal of the capacitive electric-field sensor output of plate.
5. a kind of electricity-testing method using contact and noncontacting proximity sensor according to claim 1, it is characterized in that: institute
Signal processing circuit is stated using a single-chip microcontroller while receiving the voltage signal of two-way sensor signal conditioning circuit output, and point
The virtual value for not calculating two-way voltage signal carries out size logic judgment, output phase according to calculated two-way voltage signal
Answer the different alarm signals of frequency；According to the difference of alarm signal frequency, judge that type of alarm is that contact is alarmed still
Contactless alarm, when sound-light alarm frequency be 2Hz, then be contact alarm, if sound-light alarm frequency be greater than 5Hz, for
Contactless alarm；Distance of the electroscope apart from object under test can also be judged according to the difference of frequency.
6. a kind of electricity-testing method using contact and noncontacting proximity sensor according to claim 1, it is characterized in that: institute
Bluetooth sending module is stated using the Bluetooth chip based on BLE technology, the data that processor exports wirelessly are sent to
Mobile phone terminal carries out data processing by mobile phone terminal monitoring of software.
7. a kind of electricity-testing method using contact and noncontacting proximity sensor according to claim 1, it is characterized in that: institute
Mobile phone monitoring is stated to help live care provider to be monitored the electrical verification result of service personnel, to ensure the peace of service personnel
Entirely.
8. a kind of electricity-testing method using contact and noncontacting proximity sensor according to claim 1, it is characterized in that: institute
It states being achieved in that for mobile phone monitoring side and bluetooth connection is established by a cell phone client App and electroscope, electroscope will connect
The data of touch and non-contact type electricity checking result are sent to mobile phone by bluetooth, by being shown respectively after cell phone client App parsing,
And output of vibration and voice prompting；That is: described mobile phone monitoring side is for care provider for the peace of site examining and repairing electrical verification personnel
Full monitoring, is achieved in that through cell phone client receiving bluetooth, parses blue-teeth data agreement again later and contacted
Formula and non-contact type electricity checking data, contact and non-contact data pass through dial plate animation respectively and carry out Dynamically Announce, and will connect
Touch and non-contact data carry out logic judgment, so that mobile phone is issued different audio alerts according to the result of logic judgment and remind
And vibration prompting；Care provider guards electrical verification service personnel according to the prompt of mobile phone monitoring side, provides necessary safety
It reminds.
9. a kind of use contact and noncontacting proximity sensor according to claim 1, it is characterized in that: contact probe head 1
One end insertion is connected in the annular space among capacity plate antenna type electric-field sensor 2 to be attached by fixing bolt 3, is contacted
With popping one's head in connection contact conducting wire 6 and electroscope 5 output voltages, provide detection signal for touch sensor；Capacity plate antenna type
The induced voltage of electric-field sensor 2 is noncontacting proximity sensor by being connected to the contactless conducting wire 4 of 2 upper and lower ends of sensor
Detection signal is provided；
Contact probe head 1 and the capacitive electric-field sensor 2 of plate combine, and two of them sensor works independently, and contact probe head 1 connects
After touching charged object, contact probe head 1 and electroscope stray capacitance between 5 get a voltage, which is used for rear continued access
The detection of touch signal conditioning circuit；Contact probe head with passing through contact conducting wire 6 and electroscope 5 output voltages；Capacity plate antenna type
Electric-field sensor 2 is annular；Induced voltage of the capacity plate antenna type electric-field sensor 2 under electric field environment passes through contact conducting wire 6
Output is detected for subsequent conditioning circuit；
The voltage that stray capacitance is got between contact probe head and electroscope ground passes through current-limiting protection circuit, and electric current scales circuit and steady
It exports after filters pressing wave circuit to the port ADC1 of single-chip microprocessor MCU；And 2 induced voltage of capacity plate antenna type electric-field sensor is by decompression
It exports after circuit, filter circuit, rectification circuit to the port ADC2 of single-chip microprocessor MCU；Single-chip microcontroller is to the port ADC1 and the port ADC2
Input signal judges after AD conversion using program, exports corresponding sound and light alarm signal.
10. a kind of electricity-testing method using contact and noncontacting proximity sensor according to claim 1, it is characterized in that:
The non-contact type signal conditioning circuit, wherein resistance R1 and resistance R2 forms electric resistance partial pressure and impedance matching circuit, resistance R1
It is respectively the big resistance of 51M Ω and 10M Ω with resistance R2, the two uses big resistance to carry out to capacity plate antenna type electric-field sensor
Impedance matching, while the ratio of the two forms 1/6.1 intrinsic standoff ratio, and sensor output voltage is down to the model that single-chip microcontroller can be read
It encloses；Amplifier U1 is voltage follower circuit, by increasing input resistance, reduces output resistance to improve circuit load capacity；Electricity
It hinders R3, resistance R4, resistance R5, resistance R6, capacitor C1, capacitor C2 and amplifier U2 and forms active second-order low-pass filter circuit, to
The high-frequency electromagnetic interference signal that sensor receives is filtered out, residual circuit is precise rectification circuit, for rectifying faint voltage
Signal, convenient for the signal-obtaining of single-chip microcontroller；
R13 is the big resistance of 1M Ω in the contact signal conditioning circuit, for limiting current protection subsequent conditioning circuit；Resistance
R14, resistance R15, triode Q1 form electric current Zoom module, and when contact probe head touches electrical body, triode Q1 can be periodically
Conducting；Resistance R16, resistance R17, resistance R18, capacitor C3 and capacitor C4 constitute filter circuit of pressure-stabilizing, so that period on-off
The voltage of triode Q1 output can stablize output, and the port ADC2 obtains burning voltage；
The sound light alarming circuit carries out light alarm using four LED light, is located at electroscope outer casing bottom, and group circularizes alarm
LED light；LED light is all made of triode with buzzer and is driven in warning circuit；
After the power on circuitry of the signal processing module, single-chip microcontroller carries out just the port ADC1, the port ADC2 and timer TIM1
Beginningization, TIM1 are initialized as 100us and interrupt primary, an interruption port ADC1 of reading and the port ADC2, and every 100 numbers every time
The port ADC1 and the port ADC2 are obtained according to a virtual value is calculated, extremely further according to capacity plate antenna type electric-field sensor output voltage
The conversion coefficient k1 and contact signal conditioning circuit output voltage of the port ADC1 are put down to the conversion coefficient k2 of the port ADC2
The capacitive electric-field sensor output voltage U1=ADC1*k1 of plate and contact signal conditioning circuit output voltage U2=ADC2*k2 is right
The voltage U1 and voltage U2 being converted to carry out logic judgment: as voltage U2 > 1.5V, then it represents that metal contact probe head touches band
Electric body, the low frequency acousto-optic alert frequency for exporting 2Hz indicate contact electrification；As U2≤1.5V, the size of voltage U1 is at this moment judged again,
Alarm threshold value voltage U0.7, voltage U0.5, voltage U0.3, the voltage U0.1 of each distance obtained with experimental result are compared
Compared with, if voltage U1 < U0.7, does not alarm, otherwise according to locating voltage range issue corresponding frequency sound-light alarm believe
Number, and the higher acousto-optic alert frequency of voltage of voltage U1 is higher；
The bleeder circuit of resistance R30 and resistance R31 composition, output voltage AD are used as with reference to electricity in the bluetooth sending module circuit
Pressure monitors remaining capacity for Bluetooth chip, and R32 and KEY form voltage pull-up circuit, and when KEY is pressed, bluetooth module is restarted；U1
For Bluetooth chip, TXD1 and RXD1 are respectively connected to the sending port TXD and receiving port RXD of single-chip microcontroller, for the transmission of data；
The monitoring side interface layout of the cellphone monitoring includes three parts, shows the connection status of bluetooth equipment, contact respectively
The voltage value of electrical verification and its dial plate are shown, the voltage value of non-contact type electricity checking and its dial plate are shown；The wherein maximum of dial plate
Voltage value when range is electroscope and charging equipment distance is 0；
The workflow of the mobile phone monitoring side are as follows: before starting electrical verification, power grid care provider opens bluetooth discovery indigo plant with mobile phone terminal
Tooth equipment just carries out bluetooth connection after detecting required electroscope bluetooth equipment, and in connection after bluetooth equipment, bluetooth is opened
New thread carries out the parsing of data protocol, and parsing obtains the voltage value of contact electrical verification and the voltage value of non-contact type electricity checking,
The current contact of cellphone monitoring end interface display and contactless voltage value and dial plate animation；Later to after parsing contact with
Contactless voltage value carries out logic judgment, when contact voltage reaches 1.0V, that is, shows that electroscope and high-tension apparatus carry out
Contact and high-tension apparatus charges, then mobile phone shakes and issues voice prompting；Otherwise judge whether non-contact type electricity checking voltage is big
In 1.4V, when non-contact type electricity checking voltage is greater than 1.4V, illustrate safety of the electroscope at a distance from charging equipment less than 0.7m away from
From then mobile phone shakes and issues voice prompting；Otherwise, mobile phone does not do voice and vibration prompting；
The electricity-testing method be by electroscope close to Devices to test when, electroscope when apart from Devices to test 0.1m-0.7m
If issuing the sound-light alarm that frequency is higher than 5Hz, and higher apart from the nearlyr sound-light alarm frequency of Devices to test, then illustrate non-contact
Formula electrical verification issues alarm, and Devices to test may be charged, further be contacted the metal contact probe head of electroscope with Devices to test, such as
Electroscope sound-light alarm frequency is reduced to 2Hz to fruit at this time, then illustrates that contact electrical verification issues alarm, and Devices to test charges really,
Else if electroscope still issues the sound-light alarm of high frequency when contact, then illustrate at this time to be still that non-contact type electricity checking issues report
Alert, Devices to test may be not charged, needs to carry out neighbouring other equipment electrical verification to confirm whether Devices to test is not charged；If
When electroscope is apart from Devices to test 0.1m-0.7m, electroscope does not issue sound-light alarm, illustrates that non-contact type electricity checking is not sent out
It alarms out, Devices to test may be not charged, further contacts the metal probe of electroscope with Devices to test, if electrical verification at this time
Device still without issuing sound-light alarm, illustrates that Devices to test is really not charged, otherwise, illustrates that Devices to test may charge, again
Detection.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632371A (en) * | 2019-09-30 | 2019-12-31 | 深圳供电局有限公司 | Charged non-contact detection device and method for object surface |
| CN110887989A (en) * | 2019-12-06 | 2020-03-17 | 国家电网有限公司 | Non-contact electricity testing system applied to power transmission line |
| CN111190127A (en) * | 2020-01-10 | 2020-05-22 | 长沙理工大学 | Non-contact live working safety detection method and device based on magnetic induction |
| CN111351978A (en) * | 2020-04-23 | 2020-06-30 | 大连理工大学 | Multi-voltage-level non-contact electroscope |
| CN111351977A (en) * | 2020-04-23 | 2020-06-30 | 大连理工大学 | AC-DC integrated combined electroscope |
| CN111458574A (en) * | 2020-05-08 | 2020-07-28 | 大连理工大学 | Non-contact high-voltage phase detector |
| CN111537781A (en) * | 2020-05-07 | 2020-08-14 | 江永雄 | Control circuit of electric detector |
| CN113009257A (en) * | 2021-02-26 | 2021-06-22 | 西安微电子技术研究所 | Simple and reliable power-on state detection circuit |
| CN113291350A (en) * | 2021-04-12 | 2021-08-24 | 中车唐山机车车辆有限公司 | EMUs high-pressure tank early warning device and EMUs that discharges |
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| CN114137287A (en) * | 2021-12-02 | 2022-03-04 | 国网江苏省电力有限公司常州供电分公司 | Electricity-testing self-detection warning device based on high applicability of power equipment |
| CN116298474A (en) * | 2023-05-18 | 2023-06-23 | 四川嘉能佳电力集团有限责任公司 | Power operation and maintenance safety monitoring method and system based on live state real-time detection |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000221219A (en) * | 1999-02-02 | 2000-08-11 | Hasegawa Denki Kogyo Kk | Noncontact type detector for d.c. high voltage |
| CN2741056Y (en) * | 2003-06-16 | 2005-11-16 | 珠海优特电力科技股份有限公司 | Wireless anti-error electroscope |
| CN105137161A (en) * | 2015-07-17 | 2015-12-09 | 恒同(中国)有限公司 | Digital composite functional high-voltage electroscope |
| CN206161726U (en) * | 2016-11-16 | 2017-05-10 | 辽宁宇光输变电有限公司 | High pressure contact, non -contact electroscope combination electroscope |
| CN206411175U (en) * | 2016-12-14 | 2017-08-15 | 国网安徽省电力公司繁昌县供电公司 | Combined high-voltage electroscopic device |
| CN108663564A (en) * | 2018-07-10 | 2018-10-16 | 大连理工大学 | A kind of two-in-one sensor for high voltage electroscope |
| CN208314058U (en) * | 2018-07-10 | 2019-01-01 | 大连理工大学 | A kind of two-in-one sensor for high voltage electroscope |
-
2019
- 2019-03-15 CN CN201910200014.0A patent/CN109991464A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000221219A (en) * | 1999-02-02 | 2000-08-11 | Hasegawa Denki Kogyo Kk | Noncontact type detector for d.c. high voltage |
| CN2741056Y (en) * | 2003-06-16 | 2005-11-16 | 珠海优特电力科技股份有限公司 | Wireless anti-error electroscope |
| CN105137161A (en) * | 2015-07-17 | 2015-12-09 | 恒同(中国)有限公司 | Digital composite functional high-voltage electroscope |
| CN206161726U (en) * | 2016-11-16 | 2017-05-10 | 辽宁宇光输变电有限公司 | High pressure contact, non -contact electroscope combination electroscope |
| CN206411175U (en) * | 2016-12-14 | 2017-08-15 | 国网安徽省电力公司繁昌县供电公司 | Combined high-voltage electroscopic device |
| CN108663564A (en) * | 2018-07-10 | 2018-10-16 | 大连理工大学 | A kind of two-in-one sensor for high voltage electroscope |
| CN208314058U (en) * | 2018-07-10 | 2019-01-01 | 大连理工大学 | A kind of two-in-one sensor for high voltage electroscope |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632371A (en) * | 2019-09-30 | 2019-12-31 | 深圳供电局有限公司 | Charged non-contact detection device and method for object surface |
| CN110887989A (en) * | 2019-12-06 | 2020-03-17 | 国家电网有限公司 | Non-contact electricity testing system applied to power transmission line |
| CN111190127A (en) * | 2020-01-10 | 2020-05-22 | 长沙理工大学 | Non-contact live working safety detection method and device based on magnetic induction |
| CN111351978A (en) * | 2020-04-23 | 2020-06-30 | 大连理工大学 | Multi-voltage-level non-contact electroscope |
| CN111351977A (en) * | 2020-04-23 | 2020-06-30 | 大连理工大学 | AC-DC integrated combined electroscope |
| CN111537781B (en) * | 2020-05-07 | 2022-03-25 | 江永雄 | Control circuit of electric detector |
| CN111537781A (en) * | 2020-05-07 | 2020-08-14 | 江永雄 | Control circuit of electric detector |
| CN111458574A (en) * | 2020-05-08 | 2020-07-28 | 大连理工大学 | Non-contact high-voltage phase detector |
| CN113009257A (en) * | 2021-02-26 | 2021-06-22 | 西安微电子技术研究所 | Simple and reliable power-on state detection circuit |
| CN113009257B (en) * | 2021-02-26 | 2023-09-29 | 西安微电子技术研究所 | Simple and reliable power-on state detection circuit |
| CN113291350A (en) * | 2021-04-12 | 2021-08-24 | 中车唐山机车车辆有限公司 | EMUs high-pressure tank early warning device and EMUs that discharges |
| CN113291350B (en) * | 2021-04-12 | 2022-10-14 | 中车唐山机车车辆有限公司 | EMUs high-pressure tank early warning device and EMUs that discharges |
| CN113899929A (en) * | 2021-10-12 | 2022-01-07 | 广西电网有限责任公司柳州供电局 | Safety multimeter device for long-distance detection |
| CN113899929B (en) * | 2021-10-12 | 2023-10-13 | 广西电网有限责任公司柳州供电局 | Safety multimeter device for long-distance detection |
| CN114137287A (en) * | 2021-12-02 | 2022-03-04 | 国网江苏省电力有限公司常州供电分公司 | Electricity-testing self-detection warning device based on high applicability of power equipment |
| CN116298474A (en) * | 2023-05-18 | 2023-06-23 | 四川嘉能佳电力集团有限责任公司 | Power operation and maintenance safety monitoring method and system based on live state real-time detection |
| CN116298474B (en) * | 2023-05-18 | 2023-08-15 | 四川嘉能佳电力集团有限责任公司 | Power operation and maintenance safety monitoring method and system based on live state real-time detection |
| CN116520010A (en) * | 2023-06-30 | 2023-08-01 | 中国电力科学研究院有限公司 | Multi-parameter integrated test electric system based on unmanned aerial vehicle and corresponding method thereof |
| CN116520010B (en) * | 2023-06-30 | 2023-09-29 | 中国电力科学研究院有限公司 | Multi-parameter integrated test electric system based on unmanned aerial vehicle and corresponding method thereof |
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