CN110514105A - Stable type thickness of frozen earth layer monitoring device - Google Patents
Stable type thickness of frozen earth layer monitoring device Download PDFInfo
- Publication number
- CN110514105A CN110514105A CN201810486255.1A CN201810486255A CN110514105A CN 110514105 A CN110514105 A CN 110514105A CN 201810486255 A CN201810486255 A CN 201810486255A CN 110514105 A CN110514105 A CN 110514105A
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- voltage
- auxiliary electrode
- power supply
- electrode
- circuit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
Abstract
The invention discloses stable type thickness of frozen earth layer monitoring devices, including thickness of frozen earth layer monitoring electrode, monitoring auxiliary electrode, electric current and voltage sampling circuit, master control system and measurement power supply；The monitoring auxiliary electrode includes electric current auxiliary electrode and 2 voltage auxiliary electrodes, and the voltage auxiliary electrode includes first voltage auxiliary electrode and second voltage auxiliary electrode；The electric current auxiliary electrode is connected by measuring power supply with the current channel of electric current and voltage sampling circuit, and the voltage auxiliary electrode is connected on the voltage channel of electric current and voltage sampling circuit；Thickness of frozen earth layer monitoring electrode is arranged with multiple metal electrodes at insulation system and outside, and the lead being connected with master control system is provided on the metal electrode；The electric current and voltage sampling circuit are connected in master control system；Surge circuit is connected on the measurement power supply.Its reliability is high.
Description
Technical field
The present invention relates to power ground systematic survey fields, and in particular to stable type thickness of frozen earth layer monitoring device.
Background technique
Since variation of ambient temperature is big, the region upper layer of soil is caused to there is seasonal freezeout, on upper layer after freezing
High soil resistivity layer is formed in soil, and compared with non-freezing situation, the soil resistivity of this layer is in different season phases
Difference ten to hundreds times, to cause ground network ground resistance very big in different calendar variations.The main indicator of earth mat safety
For ground resistance, step voltage, contact voltage, soil freezing will cause ground resistance to rise, and ground resistance increase will cause ground
Net current potential rises, and increases so as to cause step voltage and contact voltage, jeopardizes personnel and equipment safety.Therefore, monitoring is seasonal
The frozen soil layer thickness of Frozen Ground Area has very important meaning to ensuring substation operation safely.
The monitoring of frost zone thickness belongs to the scope of overvoltage protection and ground connection.The type monitoring there is no to set at present
It is standby.
Summary of the invention
In order to solve the above-mentioned technical problem the present invention provides stable type thickness of frozen earth layer monitoring device.
The present invention is achieved through the following technical solutions:
Stable type thickness of frozen earth layer monitoring device, including thickness of frozen earth layer monitoring electrode, monitoring auxiliary electrode, electric current and voltage are adopted
Sample circuit, master control system and measurement power supply；Wherein:
The monitoring auxiliary electrode includes electric current auxiliary electrode and 2 voltage auxiliary electrodes, the voltage auxiliary electrode packet
Include first voltage auxiliary electrode and second voltage auxiliary electrode；
The electric current auxiliary electrode is connected by measuring power supply with the current channel of electric current and voltage sampling circuit, the electricity
Pressure auxiliary electrode is connected on the voltage channel of electric current and voltage sampling circuit；
Thickness of frozen earth layer monitoring electrode is arranged with multiple metal electrodes at insulation system and outside, sets on the metal electrode
It is equipped with the lead being connected with master control system；
The electric current and voltage sampling circuit are connected in master control system；
Surge circuit is connected on the measurement power supply；
The measurement power supply includes the first power module and second power supply module, first power module, second source
Module passes through first voltage detection circuit respectively, second voltage detection circuit is connected with control circuit, the control circuit according to
First voltage detection circuit, second voltage detection circuit voltage value control first switch circuit, second switch circuit respectively
On-off, first power module, second power supply module pass through first switch circuit, second switch circuit and monitoring modular respectively
It is connected.
The surge circuit includes the first field-effect tube, the second field-effect tube, first resistor, second resistance and two poles
Pipe, the grid of first field-effect tube and the cathode of drain electrode, diode are both connected on power supply, second field-effect tube
The anode of grid and source electrode, diode is grounded, and the source electrode of first field-effect tube passes sequentially through first resistor, second resistance
Be connected with the drain electrode of the second field-effect tube, the first resistor, second resistance connecting pin be connected on power module outlet.
First field-effect tube is P-channel field-effect transistor (PEFT) pipe, and second field-effect tube is N-channel field-effect tube.
The first resistor, second resistance Standard resistance range be 100 ohm to 200 ohm.
Compared with prior art, the present invention having the following advantages and benefits:
1, the present invention is by measurement earth's surface voltage, and when measuring electric current pole is more than frozen soil layer thickness, earth's surface voltage will
Mutation being generated, by detecting this mutation, it can be determined that the profound degree of current flow is located at the interface of frozen soil layer and non-frozen soil layer, from
And the thickness of Seasonal analysis is calculated.
2, it is connected with surge circuit on the measurement power supply of this equipment, improves the reliability of device measuring.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment, the present invention is made
Further to be described in detail, exemplary embodiment of the invention and its explanation for explaining only the invention, are not intended as to this
The restriction of invention.
Embodiment 1
Stable type thickness of frozen earth layer monitoring device, including thickness of frozen earth layer monitoring electrode, monitoring auxiliary electrode, electric current and voltage are adopted
Sample circuit, master control system and measurement power supply；Wherein:
The monitoring auxiliary electrode includes electric current auxiliary electrode and 2 voltage auxiliary electrodes, the voltage auxiliary electrode packet
Include first voltage auxiliary electrode and second voltage auxiliary electrode；
The electric current auxiliary electrode is connected by measuring power supply with the current channel of electric current and voltage sampling circuit, the electricity
Pressure auxiliary electrode is connected on the voltage channel of electric current and voltage sampling circuit；
Thickness of frozen earth layer monitoring electrode is arranged with multiple metal electrodes at insulation system and outside, sets on the metal electrode
It is equipped with the lead being connected with master control system；
The electric current and voltage sampling circuit are connected in master control system；
Surge circuit is connected on the measurement power supply；
The measurement power supply includes the first power module and second power supply module, first power module, second source
Module passes through first voltage detection circuit respectively, second voltage detection circuit is connected with control circuit, the control circuit according to
First voltage detection circuit, second voltage detection circuit voltage value control first switch circuit, second switch circuit respectively
On-off, first power module, second power supply module pass through first switch circuit, second switch circuit and monitoring modular respectively
It is connected.
The surge circuit includes the first field-effect tube, the second field-effect tube, first resistor, second resistance and two poles
Pipe, the grid of first field-effect tube and the cathode of drain electrode, diode are both connected on power supply, second field-effect tube
The anode of grid and source electrode, diode is grounded, and the source electrode of first field-effect tube passes sequentially through first resistor, second resistance
Be connected with the drain electrode of the second field-effect tube, the first resistor, second resistance connecting pin be connected on power module outlet.
First field-effect tube is P-channel field-effect transistor (PEFT) pipe, and second field-effect tube is N-channel field-effect tube.
The first resistor, second resistance Standard resistance range be 100 ohm to 200 ohm.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (4)
1. stable type thickness of frozen earth layer monitoring device, which is characterized in that including thickness of frozen earth layer monitoring electrode, monitoring auxiliary electrode, electricity
Stream and voltage sampling circuit, master control system and measurement power supply；Wherein:
The monitoring auxiliary electrode includes electric current auxiliary electrode and 2 voltage auxiliary electrodes, and the voltage auxiliary electrode includes the
One voltage auxiliary electrode and second voltage auxiliary electrode；
The electric current auxiliary electrode is connected by measuring power supply with the current channel of electric current and voltage sampling circuit, and the voltage is auxiliary
Electrode is helped to be connected on the voltage channel of electric current and voltage sampling circuit；
Thickness of frozen earth layer monitoring electrode is arranged with multiple metal electrodes at insulation system and outside, is provided on the metal electrode
The lead being connected with master control system；
The electric current and voltage sampling circuit are connected in master control system；
Surge circuit is connected on the measurement power supply；
The measurement power supply includes the first power module and second power supply module, first power module, second power supply module
It is connected respectively by first voltage detection circuit, second voltage detection circuit with control circuit, the control circuit is according to first
Voltage detecting circuit, second voltage detection circuit voltage value control the on-off of first switch circuit, second switch circuit respectively,
First power module, second power supply module pass through first switch circuit respectively, second switch circuit is connected with monitoring modular.
2. stable type thickness of frozen earth layer monitoring device according to claim 1, which is characterized in that the surge circuit packet
Include the first field-effect tube, the second field-effect tube, first resistor, second resistance and diode, the grid of first field-effect tube
It is both connected on power supply with the cathode of drain electrode, diode, the grid of second field-effect tube and the anode of source electrode, diode are equal
Ground connection, the source electrode of first field-effect tube passes sequentially through first resistor, second resistance is connected with the drain electrode of the second field-effect tube,
The first resistor, second resistance connecting pin be connected on power module outlet.
3. stable type thickness of frozen earth layer monitoring device according to claim 2, which is characterized in that first field-effect tube is
P-channel field-effect transistor (PEFT) pipe, second field-effect tube are N-channel field-effect tube.
4. stable type thickness of frozen earth layer monitoring device according to claim 2, which is characterized in that the first resistor, second
The Standard resistance range of resistance is 100 ohm to 200 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810486255.1A CN110514105A (en) | 2018-05-21 | 2018-05-21 | Stable type thickness of frozen earth layer monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810486255.1A CN110514105A (en) | 2018-05-21 | 2018-05-21 | Stable type thickness of frozen earth layer monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110514105A true CN110514105A (en) | 2019-11-29 |
Family
ID=68621473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810486255.1A Withdrawn CN110514105A (en) | 2018-05-21 | 2018-05-21 | Stable type thickness of frozen earth layer monitoring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN110514105A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112882103A (en) * | 2021-01-22 | 2021-06-01 | 中煤建设集团有限公司 | Method for detecting thickness of frozen soil curtain of urban underground large-scale freezing project |
-
2018
- 2018-05-21 CN CN201810486255.1A patent/CN110514105A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112882103A (en) * | 2021-01-22 | 2021-06-01 | 中煤建设集团有限公司 | Method for detecting thickness of frozen soil curtain of urban underground large-scale freezing project |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191129 |
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| WW01 | Invention patent application withdrawn after publication |