CN117538601A - Handheld induction electric measurement device and measurement method - Google Patents
Handheld induction electric measurement device and measurement method Download PDFInfo
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- CN117538601A CN117538601A CN202311518303.8A CN202311518303A CN117538601A CN 117538601 A CN117538601 A CN 117538601A CN 202311518303 A CN202311518303 A CN 202311518303A CN 117538601 A CN117538601 A CN 117538601A
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- 238000005259 measurement Methods 0.000 title claims abstract description 109
- 230000006698 induction Effects 0.000 title claims abstract description 99
- 238000000691 measurement method Methods 0.000 title description 5
- 238000001514 detection method Methods 0.000 claims abstract description 118
- 239000004020 conductor Substances 0.000 claims abstract description 61
- 239000000725 suspension Substances 0.000 claims abstract description 45
- 230000035945 sensitivity Effects 0.000 claims abstract description 8
- 238000005070 sampling Methods 0.000 claims description 37
- 230000005611 electricity Effects 0.000 claims description 21
- 230000002238 attenuated effect Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 8
- 230000005684 electric field Effects 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000013101 initial test Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000000750 progressive effect Effects 0.000 description 1
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Classifications
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/08—Circuits for altering the measuring range
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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
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
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Abstract
The handheld induction electric measurement device comprises a high-sensitivity alternating current induction detection module and a high-voltage anti-interference induction electric measurement module; the high-sensitivity alternating current induction detection module can display whether the suspension conductor is electrified or not after carrying out non-contact preliminary detection; the high-voltage anti-interference induction electric measurement module can display the electrified suspension conductor after performing contact electrification detection. In practical engineering application, can let the user check fast through high sensitivity alternating current electric induction detection module whether there is the faradic to the suspension conductor earlier, the rethread high voltage anti-interference faradic measuring module carries out the accurate electrified detection of contact to electrified suspension conductor, and then improves detection efficiency and detection precision, and the high voltage anti-interference faradic measuring module internal resistance that this application adopted reaches the G omega level, consequently can accurately reflect the true value of faradic to further improve measurement accuracy.
Description
Technical Field
The application relates to the technical field of power equipment, in particular to a handheld induction electric measurement device and a measurement method.
Background
Alternating electric fields are distributed around electrified equipment such as a transformer substation, a power transmission line and the like, and induction electricity is generated by the alternating electric fields on nearby conductors. Common potential safety hazards for electricity production of personal equipment are damaged by induced electricity. The portable, quick and accurate measurement of the conductor induction electricity has important significance for the safe production of electric power.
The current sensing electricity measuring means mainly adopts the universal meter to measure, but the internal resistance of the universal meter is lower, generally about 20MΩ, and when measuring conductor sensing electricity, the sensing charge is easy to dissipate through the universal meter, and the measurement is inaccurate.
Disclosure of Invention
The purpose of this application aims at solving at least one of the above-mentioned technical defect, especially among the prior art faradic measuring means mainly adopts the universal meter to measure, but the internal resistance of universal meter is lower, generally is about 20MΩ, and when measuring the conductor faradic, the faradic charges of inducting is dissipated through the universal meter easily, leads to measuring inaccurate technical defect.
The application provides a hand-held type induction electric measurement device, the device includes:
the high-sensitivity alternating current induction detection module is used for displaying a preliminary detection result after carrying out non-contact preliminary detection on whether the suspension conductor is electrified or not;
and the high-voltage anti-interference induction electricity measurement module is used for displaying an electrified detection result after carrying out contact electrification detection on the electrified suspension conductor.
Optionally, the high-voltage anti-interference sensing electricity measurement module is further used for displaying an alarm on sensing electricity in a preset range.
Optionally, the high-sensitivity alternating current induction detection module comprises an alternating current induction detection module, an alternating current induction measurement module and an alternating current induction display module;
the alternating current induction detection module is used for carrying out non-contact detection on an alternating electric field generated by a suspension conductor under an alternating current lead through a high-sensitivity alternating current inductor, and sending a detected signal to the alternating current induction measurement module;
the alternating current induction measurement module is used for measuring whether the detected signal is electrified or not through the high-sensitivity chip and sending a measurement result to the alternating current induction display module;
and the alternating current induction display module is used for displaying the measurement result through the LED lamp.
Optionally, the high-voltage anti-interference induction electric measurement module comprises a high-voltage anti-interference voltage sampling measurement module, a voltage attenuation module, a sampling and holding circuit and a measurement display module;
the high-voltage anti-interference voltage sampling measurement module is used for carrying out contact type electrification detection on the voltage of the electrified suspension conductor through the detachable telescopic antenna and sending a detected voltage signal to the voltage attenuation module;
the voltage attenuation module is used for attenuating the detected voltage signal according to the attenuation amplitude selected by the user and sending the attenuated voltage signal to the sample hold circuit;
the sampling hold circuit is used for improving the input impedance of the attenuated voltage signal and sending the voltage signal with improved impedance to the measurement display module;
and the measurement display module is used for displaying the voltage signal with the improved impedance through an LCD.
Optionally, the high-voltage anti-interference voltage sampling measurement module comprises a voltage sampling module, a voltage dividing module, a high-voltage isolation module and a protection circuit;
the voltage sampling module is used for carrying out contact type electrification detection on the voltage of the electrified suspension conductor through the detachable telescopic antenna and sending the detected high-voltage signal to the voltage dividing module;
the voltage dividing module is used for dividing the detected high-voltage signals through the high-voltage-resistant component and obtaining high-voltage and low-voltage signals;
the high-voltage isolation module is used for isolating the high-voltage signals and the low-voltage signals at high voltage by adopting a separated PCB;
the protection circuit is used for protecting the circuit of the high-voltage anti-interference voltage sampling and measuring module.
Optionally, the voltage attenuation module includes a first attenuation module and a second attenuation module;
the first attenuation module is used for attenuating the detected voltage signal by adopting attenuation amplitude of 100 times and transmitting the attenuated voltage signal to the sample hold circuit;
the second attenuation module is used for attenuating the detected voltage signal by adopting attenuation amplitude which is 1000 times, and sending the attenuated voltage signal to the sample hold circuit.
Optionally, the measurement range of the first attenuation module is +/-1 kV, and the measurement precision is 0.01kV.
Optionally, the measurement range of the second attenuation module is +/-10 kV, and the measurement precision is 0.1kV.
Optionally, the measurement display module comprises a rectification filter module, a multiplying power device, an ADC sampling circuit, a signal processing module and a digital display circuit;
the rectification filter module is used for rectifying and filtering the voltage signal with improved impedance and sending the filtered voltage signal to the multiplying power device;
the multiplying power device is used for converting the filtered voltage signal into a corresponding voltage analog signal according to a preset multiplying power value;
the ADC sampling circuit is used for converting the voltage analog signal into a voltage digital signal;
the signal processing module is used for extracting an effective value from the voltage digital signal;
and the digital display circuit is used for displaying the effective value through an LCD.
The present application also provides a handheld induction measuring method based on the handheld induction measuring device of any one of the above embodiments, the method comprising:
after non-contact preliminary detection is carried out on whether the suspension conductor is electrified or not, the preliminary detection result is displayed;
and when the initial detection result shows that the suspension conductor is electrified, receiving an electrified detection instruction triggered by a user based on the initial detection result, and displaying an electrified detection result after carrying out contact electrified detection on the electrified suspension conductor according to the electrified detection instruction.
From the above technical solutions, the embodiments of the present application have the following advantages:
the handheld induction electric measurement device comprises a high-sensitivity alternating current induction detection module and a high-voltage anti-interference induction electric measurement module; the high-sensitivity alternating current induction detection module can display a preliminary detection result after carrying out non-contact preliminary detection on whether the suspended conductor is electrified or not; the high-voltage anti-interference induction electric measurement module can display the charged detection result after performing contact type charged detection on the charged suspension conductor. In practical engineering application, can let the user check fast through high sensitivity alternating current electric induction detection module whether there is the faradic to the suspension conductor earlier, the rethread high voltage anti-interference faradic measuring module carries out the accurate electrified detection of contact to electrified suspension conductor, and then improves detection efficiency and detection precision, and the high voltage anti-interference faradic measuring module internal resistance that this application adopted reaches the G omega level, consequently can accurately reflect the true value of faradic to further improve measurement accuracy.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a structure and a schematic diagram of a handheld sensing measurement device according to an embodiment of the present application;
FIG. 2 is a specific block diagram of a high-sensitivity AC induction detection module and a high-voltage anti-interference induction measurement module according to an embodiment of the present application;
fig. 3 is a flow chart of a handheld induction electric measurement method according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The current sensing electricity measuring means mainly adopts the universal meter to measure, but the internal resistance of the universal meter is lower, generally about 20MΩ, and when measuring conductor sensing electricity, the sensing charge is easy to dissipate through the universal meter, and the measurement is inaccurate. Based on this, the following technical solutions are proposed in the present application, see specifically below:
in one embodiment, as shown in fig. 1, fig. 1 is a structure and a schematic diagram of a handheld sensing measurement device according to an embodiment of the present application; the application provides a handheld induction measuring device, the device can include:
and the high-sensitivity alternating current induction detection module is used for displaying the primary detection result after carrying out non-contact primary detection on whether the suspended conductor is electrified.
And the high-voltage anti-interference induction electricity measurement module is used for displaying an electrified detection result after carrying out contact electrification detection on the electrified suspension conductor.
In this embodiment, hand-held type induction electric measurement device can include high sensitivity alternating current induction detection module and high voltage anti-interference induction electric measurement module, so just can be earlier through the preliminary detection of whether electrified to suspension conductor of high sensitivity alternating current induction detection module to show preliminary detection result, after this preliminary detection result is seen to the user like this, just can confirm whether further carry out electrified detection according to this preliminary detection result, if further carry out electrified detection, then can go on through the high voltage anti-interference induction electric measurement module of this application, this module can carry out contact type electrified detection to suspension conductor that charges, and show the electrified detection result, so the user both can detect whether the suspension conductor is electrified, again can detect the specific electrified condition of electrified suspension conductor, and then improve detection accuracy when promoting detection efficiency.
Moreover, the high-sensitivity alternating current sensing detection module can detect an alternating electric field generated by a suspension conductor under an alternating current lead through the high-sensitivity inductor, and the high-voltage anti-interference sensing electricity measurement module can accurately measure the point position of the sensing electricity suspension conductor in a contact manner through a high-internal resistance voltage sampling measurement mode, so that the true value of sensing electricity is accurately reflected.
In one embodiment, the high-voltage anti-interference sensing electricity measurement module is further used for displaying an alarm of sensing electricity within a preset range.
In this embodiment, the high-voltage anti-interference sensing electricity measuring module not only can carry out contact type electrification detection on the electrified suspension conductor, and can display electrification detection results, but also can carry out alarm display on sensing electricity in a preset range, so that users can carry out one-to-one detection on electrification conditions of the sensing electricity in the preset range according to alarm conditions, and further detection efficiency is improved.
In one embodiment, as shown in fig. 2, fig. 2 is a specific structural diagram of a high-sensitivity ac induction detection module and a high-voltage anti-interference induction measurement module provided in the embodiment of the present application; the high-sensitivity alternating current induction detection module comprises an alternating current induction detection module, an alternating current induction measurement module and an alternating current induction display module.
The alternating current induction detection module is used for carrying out non-contact detection on an alternating electric field generated by a suspension conductor under an alternating current wire through a high-sensitivity alternating current inductor, and sending a detected signal to the alternating current induction measurement module.
The alternating current induction measuring module is used for measuring whether the detected signal is electrified or not through the high-sensitivity chip and sending a measuring result to the alternating current induction display module.
And the alternating current induction display module is used for displaying the measurement result through the LED lamp.
In this embodiment, when the high-sensitivity ac induction detection module performs non-contact preliminary detection on whether the floating conductor is charged, the ac induction detection module may perform non-contact preliminary detection on whether the floating conductor is charged, and measure whether the detected signal is charged through ac induction measurement, and display the measurement result through the ac induction display module.
Specifically, alternating current induction detection module in this application can carry out non-contact detection through the alternating electric field that high sensitivity alternating current inductance produced the suspension conductor under to alternating current wire to send the signal that detects to alternating current induction measurement module, alternating current induction measurement module can be through high sensitivity chip to the signal that detects whether electrified and measure, and send measuring result to alternating current induction display module, alternating current induction display module receives measuring result after, can show measuring result through the LED lamp, like this the user can confirm whether the suspension conductor of current measurement is electrified through observing the display condition of LED lamp, if red represents electrified, green represents uncharged etc. specifically can set up according to actual conditions, do not do the restriction here.
In one embodiment, the high-voltage anti-interference induction electric measurement module comprises a high-voltage anti-interference voltage sampling measurement module, a voltage attenuation module, a sampling and holding circuit and a measurement display module.
The high-voltage anti-interference voltage sampling measurement module is used for carrying out contact type electrification detection on the voltage of the electrified suspension conductor through the detachable telescopic antenna and sending the detected voltage signal to the voltage attenuation module.
The voltage attenuation module is used for attenuating the detected voltage signal according to the attenuation amplitude selected by the user and sending the attenuated voltage signal to the sample hold circuit.
The sample hold circuit is used for improving the input impedance of the attenuated voltage signal and sending the voltage signal with improved impedance to the measurement display module.
And the measurement display module is used for displaying the voltage signal with the improved impedance through an LCD.
In this embodiment, as shown in fig. 2, when the high-voltage anti-interference induction electric measurement module performs contact type live detection on a live suspension conductor and displays a live detection result, the detection is mainly performed through the high-voltage anti-interference voltage sampling measurement module, the voltage attenuation module, the sample hold circuit and the measurement display module.
The high-voltage anti-interference voltage sampling measurement module can carry out contact type live detection on the voltage of the electrified suspension conductor which is difficult to touch through the detachable telescopic antenna, and sends a detected voltage signal to the voltage attenuation module, so that the voltage attenuation module can attenuate the detected voltage signal according to attenuation amplitude selected by a user, and sends the attenuated voltage signal to the sample hold circuit, the sample hold circuit deliberately improves the input impedance of the attenuated voltage signal, so that the influence of the suspension conductor and the voltage division circuit parameters on the measured voltage signal is reduced, and then measurement errors are reduced, and the sample hold circuit can send the voltage signal with improved impedance to the measurement display module, so that the measurement display module can display the voltage signal with improved impedance through the LCD. Thus, a user can quickly know the electrified voltage of the currently detected levitation conductor through the LED, and further, relevant measures are taken.
In one embodiment, the high-voltage anti-interference voltage sampling measurement module comprises a voltage sampling module, a voltage dividing module, a high-voltage isolation module and a protection circuit.
The voltage sampling module is used for carrying out contact type electrification detection on the voltage of the electrified suspension conductor through the detachable telescopic antenna, and sending the detected high-voltage signal to the voltage dividing module.
The voltage division module is used for dividing the detected high-voltage signals through the high-voltage-resistant component and obtaining the high-voltage signals and the low-voltage signals.
The high-voltage isolation module is used for isolating the high-voltage signals and the low-voltage signals at high voltage by adopting a separated PCB.
The protection circuit is used for protecting the circuit of the high-voltage anti-interference voltage sampling and measuring module.
In this embodiment, since the measured voltage is as high as 10kV, the provision of a high voltage isolation and protection circuit is important for the protection of the user and the circuit. Therefore, the high-voltage anti-interference voltage sampling measurement module can comprise a voltage sampling module, a voltage dividing module, a high-voltage isolation module and a protection circuit.
The voltage sampling module can carry out contact type live detection on the voltage of the electrified suspension conductor through the detachable telescopic antenna, and sends the detected high-voltage signal to the voltage dividing module, the voltage dividing module can be used for dividing the detected high-voltage signal through the high-voltage-resistant component and obtaining the high-low-voltage signal, the high-voltage isolation module can isolate the high-low-voltage signal at high voltage by adopting a separated PCB (printed circuit board) and improve electromagnetic compatibility, and the protection circuit can carry out circuit protection on the high-voltage anti-interference voltage sampling measurement module, so that the electrification condition of the suspension conductor can be measured under the condition of being safely protected.
In one embodiment, the voltage attenuation module includes a first attenuation module and a second attenuation module.
The first attenuation module is used for attenuating the detected voltage signal by adopting 100 times of attenuation amplitude and sending the attenuated voltage signal to the sample hold circuit.
The second attenuation module is used for attenuating the detected voltage signal by adopting attenuation amplitude which is 1000 times, and sending the attenuated voltage signal to the sample hold circuit.
In this embodiment, a high/low range may be set in the handheld sensing device, so that a user may select one of the ranges to perform voltage attenuation according to the measurement condition.
Specifically, the voltage attenuation module of the present application may include a first attenuation module and a second attenuation module; the first attenuation module can attenuate the detected voltage signal by adopting 100 times of attenuation amplitude and send the attenuated voltage signal to the sample hold circuit, and the second attenuation module can attenuate the detected voltage signal by adopting 1000 times of attenuation amplitude and send the attenuated voltage signal to the sample hold circuit, so that the measurement of different voltage ranges can be satisfied.
In one embodiment, the measurement range of the first attenuation module is +/-1 kV, and the measurement accuracy is 0.01kV, so that the live detection work of the suspended conductor within +/-1 kV is met.
In one embodiment, the measurement range of the second attenuation module is +/-10 kV, and the measurement accuracy is 0.1kV, so that the live detection work of the suspended conductor within the range of +/-10 kV is met.
In one embodiment, the measurement display module comprises a rectification filter module, a multiplying device, an ADC sampling circuit, a signal processing module and a digital display circuit.
The rectification filter module is used for rectifying and filtering the voltage signal with improved impedance and sending the filtered voltage signal to the multiplying power device.
The multiplier is used for converting the filtered voltage signal into a corresponding voltage analog signal according to a preset multiplying power value.
The ADC sampling circuit is used for converting the voltage analog signal into a voltage digital signal.
The signal processing module is used for extracting effective values from the voltage digital signals.
And the digital display circuit is used for displaying the effective value through an LCD.
In this embodiment, the measurement display module may display the voltage signal after impedance improvement through the LCD. Specifically, the measurement display module of the application can include a rectification filter module, a multiplying power device, an ADC sampling circuit, a signal processing module and a digital display circuit, so that voltage signals after impedance improvement can be rectified and filtered through the rectification filter module, the filtered voltage signals are sent to the multiplying power device, the multiplying power device can convert the filtered voltage signals into corresponding voltage analog signals according to preset multiplying power values, the ADC sampling circuit can convert the voltage analog signals into voltage digital signals, and after the effective values in the voltage analog signals are extracted through the signal processing module, the effective values are sent to the LCD through the digital display circuit to be displayed, and therefore users can check the voltage analog signals conveniently.
In one embodiment, as shown in fig. 3, fig. 3 is a schematic flow chart of a handheld induction electric measurement method according to an embodiment of the present application; the present application also provides a handheld induction measuring method based on the handheld induction measuring device of any one of the above embodiments, the method may include:
s110: and after carrying out non-contact preliminary detection on whether the suspended conductor is electrified, displaying a preliminary detection result.
S120: when the initial detection result shows that the floating conductor is electrified, receiving an electrified detection instruction triggered by a user based on the initial detection result, and displaying the electrified detection result after carrying out contact electrified detection on the electrified floating conductor according to the electrified detection instruction.
In this embodiment, since the handheld induction electric measurement device of the present application includes a high-sensitivity ac induction detection module and a high-voltage anti-interference induction electric measurement module; the high-sensitivity alternating current induction detection module can display a preliminary detection result after carrying out non-contact preliminary detection on whether the suspended conductor is electrified or not; the high-voltage anti-interference induction electric measurement module can display the charged detection result after performing contact type charged detection on the charged suspension conductor. In practical engineering application, can let the user check fast through high sensitivity alternating current electric induction detection module whether there is the faradic in the suspension conductor earlier, when initial testing result shows that the suspension conductor is electrified, can receive the electrified detection instruction that the user triggered based on this initial testing result to carry out the accurate electrified detection of contact to electrified suspension conductor through high-voltage anti-interference faradic measuring module, and then improve detection efficiency and detection precision, and the high-voltage anti-interference faradic measuring module internal resistance that this application adopted reaches the G omega level, consequently can accurately reflect the true value of faradic, and further improve measurement accuracy.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the present specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and may be combined according to needs, and the same similar parts may be referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A hand-held induction measuring device, the device comprising:
the high-sensitivity alternating current induction detection module is used for displaying a preliminary detection result after carrying out non-contact preliminary detection on whether the suspension conductor is electrified or not;
and the high-voltage anti-interference induction electricity measurement module is used for displaying an electrified detection result after carrying out contact electrification detection on the electrified suspension conductor.
2. The handheld induction measurement device of claim 1, wherein the high voltage anti-interference induction measurement module is further configured to alert and display induction within a predetermined range.
3. The handheld induction measurement device of claim 1, wherein the high sensitivity ac induction detection module comprises an ac induction detection module, an ac induction measurement module, and an ac induction display module;
the alternating current induction detection module is used for carrying out non-contact detection on an alternating electric field generated by a suspension conductor under an alternating current lead through a high-sensitivity alternating current inductor, and sending a detected signal to the alternating current induction measurement module;
the alternating current induction measurement module is used for measuring whether the detected signal is electrified or not through the high-sensitivity chip and sending a measurement result to the alternating current induction display module;
and the alternating current induction display module is used for displaying the measurement result through the LED lamp.
4. The handheld induction measurement device of claim 1, wherein the high voltage anti-interference induction measurement module comprises a high voltage anti-interference voltage sampling measurement module, a voltage attenuation module, a sample-and-hold circuit, and a measurement display module;
the high-voltage anti-interference voltage sampling measurement module is used for carrying out contact type electrification detection on the voltage of the electrified suspension conductor through the detachable telescopic antenna and sending a detected voltage signal to the voltage attenuation module;
the voltage attenuation module is used for attenuating the detected voltage signal according to the attenuation amplitude selected by the user and sending the attenuated voltage signal to the sample hold circuit;
the sampling hold circuit is used for improving the input impedance of the attenuated voltage signal and sending the voltage signal with improved impedance to the measurement display module;
and the measurement display module is used for displaying the voltage signal with the improved impedance through an LCD.
5. The handheld induction measurement device of claim 4, wherein the high voltage anti-interference voltage sampling measurement module comprises a voltage sampling module, a voltage dividing module, a high voltage isolation module, and a protection circuit;
the voltage sampling module is used for carrying out contact type electrification detection on the voltage of the electrified suspension conductor through the detachable telescopic antenna and sending the detected high-voltage signal to the voltage dividing module;
the voltage dividing module is used for dividing the detected high-voltage signals through the high-voltage-resistant component and obtaining high-voltage and low-voltage signals;
the high-voltage isolation module is used for isolating the high-voltage signals and the low-voltage signals at high voltage by adopting a separated PCB;
the protection circuit is used for protecting the circuit of the high-voltage anti-interference voltage sampling and measuring module.
6. The handheld induction measurement device of claim 4, wherein the voltage attenuation module comprises a first attenuation module and a second attenuation module;
the first attenuation module is used for attenuating the detected voltage signal by adopting attenuation amplitude of 100 times and transmitting the attenuated voltage signal to the sample hold circuit;
the second attenuation module is used for attenuating the detected voltage signal by adopting attenuation amplitude which is 1000 times, and sending the attenuated voltage signal to the sample hold circuit.
7. The handheld induction measurement device of claim 6, wherein the first attenuation module has a measurement range of ±1kV and a measurement accuracy of 0.01kV.
8. The handheld induction measurement device of claim 6, wherein the second attenuation module has a measurement range of ±10kV and a measurement accuracy of 0.1kV.
9. The handheld induction measurement device of claim 4, wherein the measurement display module comprises a rectifying and filtering module, a multiplying device, an ADC sampling circuit, a signal processing module and a digital display circuit;
the rectification filter module is used for rectifying and filtering the voltage signal with improved impedance and sending the filtered voltage signal to the multiplying power device;
the multiplying power device is used for converting the filtered voltage signal into a corresponding voltage analog signal according to a preset multiplying power value;
the ADC sampling circuit is used for converting the voltage analog signal into a voltage digital signal;
the signal processing module is used for extracting an effective value from the voltage digital signal;
and the digital display circuit is used for displaying the effective value through an LCD.
10. A hand-held induction measuring method based on a hand-held induction measuring device according to any of the preceding claims 1-9, characterized in that the method comprises:
after non-contact preliminary detection is carried out on whether the suspension conductor is electrified or not, the preliminary detection result is displayed;
and when the initial detection result shows that the suspension conductor is electrified, receiving an electrified detection instruction triggered by a user based on the initial detection result, and displaying an electrified detection result after carrying out contact electrified detection on the electrified suspension conductor according to the electrified detection instruction.
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