Ground resistivity observation system detection device

Abstract

The invention discloses a ground resistivity observation system detection device, and belongs to the technical field of detection equipment, the ground resistivity observation system detection device comprises a shell and a test panel, the test panel is detachably installed in the shell, the front side of the shell is provided with a lock catch mechanism, the rear side of the shell is hinged with a cover body, the front side of the cover body is fixedly provided with a lock catch seat, and the lock catch seat is fixedly connected with the lock catch mechanism. A lock catch mechanism is arranged in the shell and matched with the lock catch base, a locking mechanism is arranged in the shell and comprises a conical shell and two locking rods, and balls are arranged in the conical shell. According to the invention, a DC / AC voltmeter, an ammeter and a special detection interface are integrated, and one-stop testing of core parameters such as current stability, ripple coefficients and system errors is synchronously supported. The ripple detection loop extracts an alternating current component through capacitor filtering, error calibration adopts a standard resistance comparison method, multichannel data is acquired in parallel, error accumulation caused by repeated wiring is avoided, the detection period is remarkably shortened, and the data consistency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular, to a detection device for a ground resistivity observation system. Background Art

[0002] Ground resistivity observation is one of the core technologies in geophysical prospecting and geological disaster monitoring, and its detection accuracy directly affects the reliability of underground structure inversion. Traditional detection devices usually rely on discrete instruments to separately complete the verification of the power supply performance (such as current stability, ripple coefficient) and the measurement system error, and there are the following technical bottlenecks:

[0003] 1) Function dispersion and operation inefficiency

[0004] Existing equipment needs to be tested by connecting multiple independent instruments in series. For example, an oscilloscope is used to measure the ripple, a multimeter is used to calibrate the current drift, and an external standard resistor is used to evaluate the system error. This decentralized architecture leads to complex wiring, poor data synchronization, and it is easy to introduce contact resistance errors due to frequent plugging and unplugging of interfaces. Especially in harsh environments such as field stations, it is difficult to guarantee the operation efficiency and data consistency.

[0005] 2) Insufficient mechanical protection and environmental adaptability

[0006] Traditional detection boxes mostly use bolt fixation or simple snap structures. When transported and vibrated or accidentally dropped, the cover is easy to pop open, resulting in damage to the internal precision instruments. In addition, the high-humidity environment in the wild is likely to cause corrosion of the circuit board or a decrease in insulation performance, and the existing devices lack an active dehumidification design, so the long-term stability is limited.

[0007] 3) High maintenance and upgrade costs

[0008] The integrated packaging design makes it impossible to replace the test modules (such as the ripple detection unit, error calibration circuit) independently. Local failures require the whole device to be returned to the factory for repair, and it is impossible to expand the functions according to the interface protocol of new geoelectric instruments. The equipment iteration cycle is long and the cost is high.

[0009] 4) Lack of abnormal response mechanism

[0010] Existing technologies mostly rely on manual monitoring of instrument data and lack automatic protection against sudden overload, mechanical shock or environmental over-standard. For example, there is no self-powered off mechanism when the current suddenly increases, and it is impossible to quickly lock when the cover is accidentally opened, resulting in an increased risk of detection interruption or equipment damage; Therefore, we propose a detection device for a ground resistivity observation system to solve this problem. Summary of the Invention

[0011] The purpose of the present invention is to provide a detection device for a ground resistivity observation system to solve the problems raised in the above background art.

[0012] To achieve the above object, the present invention adopts the following technical solutions:

[0013] A detection device for a ground resistivity observation system, comprising: a housing and a test panel, the test panel is detachably installed inside the housing, a locking mechanism is provided on the front side of the housing, a cover body is hinged to the rear side of the housing, a locking seat is fixedly installed on the front side of the cover body, the locking mechanism is adapted to the locking seat, a locking mechanism is provided inside the housing, the locking mechanism includes: a conical shell and two locking rods, a ball is provided inside the conical shell, the locking mechanism includes: a guide rail and two locking plates, a locking hole is opened at the bottom of the front side of the locking plate, and the locking rod is adapted to the locking hole;

[0014] The top of the test panel is provided with a ripple coefficient positive interface, a ripple coefficient negative interface, an overall error A interface, an overall error B interface, an overall error N interface, a DC voltmeter, an AC voltmeter, a DC ammeter, an overall error M interface, a current stability positive interface, and a current stability negative interface;

[0015] The inside of the current stability positive interface is electrically connected to a standard load resistor R L , the inside of the current stability negative interface is electrically connected to the negative wiring port of the DC ammeter, and the positive wiring port of the ammeter is electrically connected to the other end of the standard load resistor R L ;

[0016] The inside of the ripple coefficient positive interface and the ripple coefficient negative interface are respectively electrically connected to a capacitor C1 and a capacitor C2. One end of the capacitor C1 and the capacitor C2 is electrically connected to the same rated load resistor R L , and the other ends of the capacitor C1 and the capacitor C2 are electrically connected to a test resistor R;

[0017] The inside of the overall error A interface is electrically connected to a load resistor R LA , the inside of the overall error B interface is electrically connected to a load resistor R LB , the other ends of the load resistor R LA and the load resistor R LB are electrically connected to the same standard resistor R J , and the standard resistor R J is electrically connected to the overall error N interface and the overall error M interface.

[0018] Preferably, the rated load resistor R L is 100Ω / 1000W, the capacitor C1 and the capacitor C2 are both 0.47μF / 400V, the test resistor R is 10kΩ / 1W, the load resistor R LA and the load resistor R LB are both 50Ω / 500W, and the standard resistor R JIt is 0.01Ω / 5W, and the accuracy class is 0.01 level.

[0019] Preferably, a top cover is fixedly installed at the top of the conical shell, a guide post and a support plate are fixedly installed at the bottom of the conical shell, a lifting plate is slidably sleeved on the outside of the guide post, linkage rods are hinged on both sides of the lifting plate, the other ends of the linkage rods are hinged to the corresponding locking rods, a guide plate is slidably sleeved on the outside of the locking rod, the guide plate and the support plate are both fixedly installed inside the shell, a compression spring is fixedly installed at the bottom of the lifting plate, the other end of the compression spring is fixedly connected to the guide post, a convex plate is fixedly installed at the top of the lifting plate, the convex plate is movably abutted against the bottom of the ball, a round hole is opened at the bottom of the conical shell, the convex plate penetrates through the round hole, and the diameter of the round hole is smaller than the diameter of the ball.

[0020] Preferably, the guide rail is fixedly installed on the front side of the shell, the lock catch plate is slidably sleeved on the outside of the guide rail, and a compression spring is fixedly installed between the two lock catch plates.

[0021] Preferably, a slot is opened at the bottom of the lock seat, locking grooves are opened on the inner walls of both sides of the slot, the lock catch plate is adapted to the slot and the locking grooves, and a chamfer is provided at the front end of the slot.

[0022] Preferably, installation mechanisms are arranged on both sides inside the shell, and each installation mechanism includes: a cross beam and two clamping plates. The clamping plates are slidably sleeved on the outside of the cross beam, a connecting spring is fixedly installed between the two clamping plates, vertical plates are fixedly installed at the four corners of the bottom of the test panel, clamping holes are opened on the front sides of the vertical plates, and the clamping plates are movably clamped in the corresponding clamping holes.

[0023] Preferably, four positioning frames are fixedly installed on the inner wall of the bottom of the shell, the bottom ends of the vertical plates are movably inserted into the corresponding positioning frames, through holes are opened on both sides of the shell, and one end of the clamping plate penetrates through the through hole and extends to the outside of the shell.

[0024] Preferably, fixed shafts are fixedly installed on both sides of the shell, and a lifting handle is rotatably sleeved on the outside of the fixed shafts.

[0025] Preferably, a humidity sensor, a controller and an air extraction pump are fixedly installed on the inner wall of the bottom of the shell. The air outlet of the air extraction pump is communicated with an air outlet pipe, and the other end of the air outlet pipe extends to the outside of the shell. An equipment temperature display, a power switch and a charging port are arranged on the top of the test panel.

[0026] The beneficial effects of the present invention are as follows:

[0027] 1. In the present invention, the detection device of the earth resistivity observation system is designed with a gravity-sensing ball and a spring interlock. When the device is tilted or dropped, the displacement of the ball triggers the compression spring of the lifting plate to rebound, and the linkage locking rod is inserted into the fixing hole of the lock plate, instantly locking the connection between the cover body and the shell to avoid damage to the internal precision instrument caused by impact. The mechanism does not require electric drive, and the pure mechanical structure ensures reliability under extreme working conditions, effectively protects the detection module from external force damage, and prolongs the service life of the equipment;

[0028] 2. In the present invention, the test panel of the ground resistivity observation system detection device is positioned by plugging the bottom vertical plate with the positioning frame, and the two side clamps are automatically inserted into the vertical plate clamp holes under the action of the spring, so as to realize rapid assembly and disassembly. During maintenance, the test unit can be separated by pressing the external clamp, and flexible replacement of different functional modules (such as ripple detection and error calibration) is supported. The modular architecture reduces maintenance costs and is convenient for expanding interfaces or upgrading hardware configurations according to detection requirements;

[0029] 3. In the present invention, the ground resistivity observation system detection device described integrates a DC / AC voltmeter, an ammeter and a dedicated detection interface, and simultaneously supports one-stop testing of core parameters such as current stability, ripple coefficient, and system error. The ripple detection circuit extracts the AC component through capacitor filtering, and the error calibration adopts the standard resistance comparison method. Multi-channel data is collected in parallel to avoid error accumulation caused by repeated wiring, significantly shorten the detection cycle and improve data consistency;

[0030] 4. In the present invention, the detection device of the earth resistivity observation system has a built-in humidity sensor to monitor the humidity of the cavity in real time. When the value exceeds the threshold, the controller automatically starts the vacuum pump to replace the dry air to prevent moisture from corroding the circuit or causing leakage risks. The temperature and humidity data are visualized through the panel display. Combined with the sealing shell and the guide column positioning structure, it ensures that the detection instrument maintains high-precision measurement in complex environments and adapts to harsh working conditions such as field stations;

[0031] 5. In the present invention, the described detection device of the earth resistivity observation system, the locking mechanism and the detection process form a closed-loop control: when the cover is abnormally opened, the compression spring of the lock plate is reset and forced to close; current overload or ripple exceeding the standard triggers the instrument alarm and records data; vibration impact activates the mechanical locking protection, and the multi-level autonomous response mechanism covers mechanical protection, electrical protection and environmental regulation, reducing the risk of human operating errors and ensuring the safety and controllability of the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the three-dimensional structure of a detection device for a ground resistivity observation system proposed by the present invention;

[0033] Figure 2Front view sectional structure schematic diagram of a detection device for a ground resistivity observation system proposed by the present invention;

[0034] Figure 3 is Figure 2 Partial enlarged view of part A in;

[0035] Figure 4 Top view sectional structure schematic diagram of a detection device for a ground resistivity observation system proposed by the present invention;

[0036] Figure 5 is Figure 4 Partial enlarged view of part B in;

[0037] Figure 6 Three - dimensional structure schematic diagram of a test panel proposed by the present invention;

[0038] Figure 7 Three - dimensional structure schematic diagram of the test panel from another perspective proposed by the present invention;

[0039] Figure 8 Three - dimensional structure schematic diagram of a buckle mechanism and a locking mechanism proposed by the present invention;

[0040] Figure 9 Three - dimensional structure schematic diagram of a buckle seat proposed by the present invention;

[0041] Figure 10 Circuit diagram for checking the current stability performance of a WL6B type constant - current power supply according to the present invention;

[0042] Figure 11 Circuit diagram for checking the voltage ripple factor according to the present invention;

[0043] Figure 12 Circuit diagram for checking the measurement system error according to the present invention.

[0044] In the figure: 1. Shell; 101. Cover; 102. Positioning frame; 2. Test panel; 201. DC voltmeter; 202. AC voltmeter; 203. DC ammeter; 204. Ripple coefficient positive interface; 205. Ripple coefficient negative interface; 206. Overall error A interface; 207. Overall error B interface; 208. Overall error N interface; 209. Overall error M interface; 210. Current stability positive interface; 211. Current stability negative interface; 212. Equipment temperature display; 213. Power switch; 214. Charging port; 215. Vertical board; 216. Card hole; 3. Lock mechanism; 301. Locking plate; 302, guide rail; 303, compression spring; 304, locking hole; 4, locking seat; 401, slot; 402, locking groove; 403, chamfer; 5, locking mechanism; 501, conical shell; 502, top cover; 503, ball bearing; 504, support plate; 505, guide column; 506, compression spring; 507, convex plate; 508, lifting plate; 509, linkage rod; 510, locking rod; 511, guide plate; 6, lifting handle; 601, fixed shaft; 7, installation mechanism; 701, card plate; 702, crossbeam; 703, connecting spring; 8, vacuum pump; 9, controller; 10, humidity sensor. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0046] Reference Figures 1 - 12 A detection device for a ground resistivity observation system comprises: a shell 1 and a test panel 2, wherein the test panel 2 is detachably mounted inside the shell 1, a locking mechanism 3 is arranged on the front side of the shell 1, a cover 101 is hingedly connected to the rear side of the shell 1, a locking seat 4 is fixedly mounted on the front side of the cover 101, the locking mechanism 3 is adapted to the locking seat 4, a locking mechanism 5 is arranged inside the shell 1, the locking mechanism 5 comprises: a conical shell 501 and two locking rods 510, a ball 503 is arranged inside the conical shell 501, and the locking mechanism 3 comprises: a guide rail 30 2 and two locking plates 301, a locking hole 304 is opened at the front bottom of the locking plate 301, and the locking rod 510 is adapted to the locking hole 304. The top of the test panel 2 is provided with a ripple coefficient positive interface 204, a ripple coefficient negative interface 205, an overall error A interface 206, an overall error B interface 207, an overall error N interface 208 and an overall error M interface 209, a current stability positive interface 210, a DC voltmeter 201, an AC voltmeter 202, a DC ammeter 203 and a current stability negative interface 211;

[0047] The internal electrical connection of the positive interface 210 of the current stability has a standard load resistor RL. The internal of the negative interface 211 of the current stability is electrically connected to the negative terminal connection port of the DC ammeter 203. The positive terminal connection port of the ammeter is electrically connected to the other end of the standard load resistor RL.

[0048] The positive interface 204 and the negative interface 205 of the ripple factor are respectively internally electrically connected with a capacitor C1 and a capacitor C2. One end of the capacitor C1 and the capacitor C2 is electrically connected to the same rated load resistor RL. The other ends of the capacitor C1 and the capacitor C2 are electrically connected to a test resistor R.

[0049] The internal of the overall error A interface 206 is electrically connected with a load resistor RLA. The internal of the overall error B interface 207 is electrically connected with a load resistor RLB. The other ends of the load resistor RLA and the load resistor RLB are electrically connected to the same standard resistor RJ. The standard resistor RJ is electrically connected to the overall error N interface 208 and the overall error M interface 209.

[0050] Specifically, the rated load resistor R L is 100Ω / 1000W. Both the capacitor C1 and the capacitor C2 are 0.47μF / 400V. The test resistor R is 10kΩ / 1W. The load resistor R LA and the load resistor R LB are both 50Ω / 500W. The standard resistor R J is 0.01Ω / 5W, and the accuracy class is 0.01 level.

[0051] In this embodiment, a top cover 502 is fixedly installed at the top of the conical shell 501. A guide post 505 and a support plate 504 are fixedly installed at the bottom of the conical shell 501. A lifting plate 508 is slidably sleeved on the outside of the guide post 505. Linkage rods 509 are hinged on both sides of the lifting plate 508. The other ends of the linkage rods 509 are hinged to the corresponding locking rods 510. A guide plate 511 is slidably sleeved on the outside of the locking rod 510. The guide plate 511 and the support plate 504 are both fixedly installed inside the housing 1. A compression spring 506 is fixedly installed at the bottom of the lifting plate 508. The other end of the compression spring 506 is fixedly connected to the guide post 505. A convex plate 507 is fixedly installed at the top of the lifting plate 508. The convex plate 507 is movably abutted against the bottom of the ball 503. A round hole is formed at the bottom of the conical shell 501. The convex plate 507 penetrates through the round hole. The diameter of the round hole is smaller than the diameter of the ball 503.

[0052] In this embodiment, the guide rail 302 is fixedly installed on the front side of the housing 1. The lock catch plate 301 is slidably sleeved on the outside of the guide rail 302. A compression spring 303 is fixedly installed between the two lock catch plates 301.

[0053] In this embodiment, a slot 401 is formed at the bottom of the buckle seat 4, buckle grooves 402 are formed on both inner walls of the slot 401, the buckle plate 301 is adapted to the slot 401 and the buckle grooves 402, and a chamfer 403 is provided at the front end of the slot 401.

[0054] In this embodiment, mounting mechanisms 7 are provided on both inner sides of the housing 1. The mounting mechanism 7 includes: a cross beam 702 and two clamping plates 701. The clamping plates 701 are slidably sleeved on the outer side of the cross beam 702. A connecting spring 703 is fixedly installed between the two clamping plates 701. Vertical plates 215 are fixedly installed at the four corners of the bottom of the test panel 2. A clamping hole 216 is formed on the front side of the vertical plate 215. The clamping plate 701 is movably clamped in the corresponding clamping hole 216.

[0055] In this embodiment, four positioning frames 102 are fixedly installed on the bottom inner wall of the housing 1. The bottom end of the vertical plate 215 is movably inserted into the corresponding positioning frame 102. Through holes are formed on both sides of the housing 1. One end of the clamping plate 701 passes through the through hole and extends to the outside of the housing 1.

[0056] In this embodiment, fixed shafts 601 are fixedly installed on both sides of the housing 1. A lifting handle 6 is rotatably sleeved on the outer side of the fixed shaft 601, which is convenient for taking.

[0057] In this embodiment, a humidity sensor 10, a controller 9 and an air extraction pump 8 are fixedly installed on the bottom inner wall of the housing 1. An air outlet pipe is communicated with the air outlet of the air extraction pump 8. The other end of the air outlet pipe extends to the outside of the housing 1. An equipment temperature display 212, a power switch 213 and a charging port 214 are arranged on the top of the test panel 2.

[0058] In this embodiment, when detection is required, by pushing the two buckle plates 301 to drive the two locking ports to disengage from the buckle grooves 402, the fixation of the cover body 101 is released, and then the cover body 101 is rotated to open, so as to facilitate the operation of the test panel 2.

[0059] In this embodiment, the current stability performance of the WL6B type constant current power supply is checked by using a ground resistivity observation system detector. The principle is as Figure 10 shown. The inspection result is that the current drift and jitter range between 0.001 and 0.002 A are qualified.

[0060] The inspection steps are as follows:

[0061] (1) Connect the output end of the constant current source to the current stability positive interface 210 and the current stability negative interface 211 on the test panel 2 with a special wire to connect the WL6B constant current power supply;

[0062] (2) Turn on the power switch 213 and the switch of the constant current power supply in sequence, and preheat for about 5 minutes;

[0063] (3) Start the high-voltage switch of the constant-current power supply, adjust the output current to 2 A, restart after turning off the high voltage, and record the drift and jitter range of the current within 5 to 60 seconds;

[0064] (4) Record the inspection results in the "Power Supply Performance Inspection Record Table" of the observation record book.

[0065] In this embodiment, the principle of using the detector of the ground resistivity observation system to check the voltage ripple factor is as Figure 11 shown. The inspection result is that the ripple factor (γ) ≤ 0.5 is qualified. The specific method steps are as follows:

[0066] (1) Connect the output terminals of the constant-current source to the positive interface 204 and negative interface 205 of the ripple coefficient on the test panel 2 with special wires;

[0067] (2) Turn on the power switch 213 and the switch of the constant-current power supply in sequence, and adjust the output current to 2 A.

[0068] (3) Read the voltage value Vd on the DC voltmeter 201 of the test panel 2;

[0069] (4) Observe the number displayed on the AC voltmeter 202 of the test panel 2. After the value is stable, read this value Va, and calculate the ripple factor according to the following formula:

[0070] (5) Record the inspection results in the "Power Supply Performance Inspection Record Table" of the observation record book.

[0071] In this embodiment, the principle of using the detector of the ground resistivity observation system to check the measurement system error is as Figure 12 shown. The inspection result is that the maximum allowable error (0.1% reading + 0.02 Ω·m) is qualified. The specific steps are as follows:

[0072] (1) Connect one of the channels of the ground resistivity instrument to the detector;

[0073] (2) Set the device coefficient K of this channel to 1000, 2000, and 4000 in sequence, then the corresponding standard values of the ground resistivity are 10.00 Ω·m, 20.00 Ω·m, and 40.00 Ω·m;

[0074] (3) Set the supply current of the constant-current power supply to be near 0.5 A, 1 A, and 2 A respectively. Start the ground resistivity instrument, measure the ground resistivity of this standard value at least 5 times, and record the measurement results in the record table;

[0075] (4) Calculate the average value of the five measurement values. If the difference between the average value of the five measurement values of the instrument under test and the standard value under each device coefficient is not greater than the maximum allowable error of ±(0.1% reading + 0.02 Ω·m), it can be determined as qualified.

[0076] In this embodiment, when it is necessary to disassemble the test panel 2, by rotating the two lifting handles 6, the two lifting handles 6 on both sides push the four clamping plates 701 towards the middle and disengage from the card holes 216, so as to release the fixation of the vertical plate 215, facilitating the display to move the test panel 2 to disassemble it;

[0077] The humidity sensor 10 monitors the humidity data inside the housing 1 and transmits it to the controller 9. When the monitored humidity exceeds the preset value, the air pump 8 is started to discharge the air inside the housing 1 through the air outlet pipe, thereby realizing ventilation and dehumidification.

[0078] After the test is completed, the cover body 101 is covered, and the cover body 101 is fixed by the cooperation of the lock catch plate 301 and the lock catch groove 402. When the housing 1 is tilted or dropped, the ball 503 rolls in the conical shell 501 under the action of gravity and disengages from the central position of the conical shell 501, thus releasing the extrusion on the convex plate 507. The initial state of the compression spring 506 is a compressed state, so that the lifting plate 508 moves upward under the elastic force of the compression spring 506, and drives the locking rod 510 to move forward through the linkage rod 509 and insert into the locking hole 304 of the lock catch plate 301, thereby restricting the movement of the lock catch plate 301 and preventing the cover body 101 from being accidentally opened.

[0079] The above has introduced in detail a detection device for a ground resistivity observation system provided by the present invention. Specific embodiments are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A detection device for a ground resistivity observation system, characterized in that Comprising: A housing (1) and a test panel (2), the test panel (2) is detachably installed inside the housing (1), a locking mechanism (3) is provided on the front side of the housing (1), a cover body (101) is hinged to the rear side of the housing (1), a locking seat (4) is fixedly installed on the front side of the cover body (101), the locking mechanism (3) is adapted to the locking seat (4), a locking mechanism (5) is provided inside the housing (1), the locking mechanism (5) includes: a conical shell (501) and two locking rods (510), a ball (503) is arranged inside the conical shell (501), the locking mechanism (3) includes: a guide rail (302) and two locking plates (301), a locking hole (304) is opened at the bottom of the front side of the locking plate (301), the locking rod (510) is adapted to the locking hole (304), a ripple coefficient positive interface (204), a ripple coefficient negative interface (205), an overall error A interface (206), a DC voltmeter (201), an AC voltmeter (202), a DC ammeter (203), an overall error B interface (207), an overall error N interface (208), an overall error M interface (209), a current stability positive interface (210) and a current stability negative interface (211) are arranged at the top of the test panel (2); The internal electrical connection of the positive interface (210) of the current stability has a standard load resistor R L , the inside of the negative interface (211) of the current stability is electrically connected to the negative terminal connection port of the DC ammeter (203), and the positive terminal connection port of the ammeter is electrically connected to the other end of the standard load resistor R L ; Inside the ripple coefficient positive interface (204) and the ripple coefficient negative interface (205), a capacitor C1 and a capacitor C2 are electrically connected respectively. One end of the capacitor C1 and the capacitor C2 is electrically connected to the same rated load resistor R L , and the other ends of the capacitor C1 and the capacitor C2 are electrically connected to a test resistor R; The internal electrical connection of the overall error A interface (206) has a load resistor R LA The internal electrical connection of the overall error B interface (207) has a load resistor R LB , the load resistor R LA and the load resistor R LB The other ends are electrically connected to the same standard resistor R J , the standard resistor R J is electrically connected to the overall error N interface (208) and the overall error M interface (209).

2. The detecting device for the ground resistivity observation system according to claim 1, wherein The rated load resistance RL is 100Ω / 1000W, both the capacitor C1 and the capacitor C2 are 0.47μF / 400V, the test resistance R is 10kΩ / 1W, both the load resistances RLA and RLB are 50Ω / 500W, the standard resistance RJ is 0.01Ω / 5W, and the accuracy class is 0.01 level; A top cover (502) is fixedly installed at the top of the conical shell (501), a guide post (505) and a support plate (504) are fixedly installed at the bottom of the conical shell (501), a lifting plate (508) is slidably sleeved on the outside of the guide post (505), linkage rods (509) are hinged to both sides of the lifting plate (508), the other ends of the linkage rods (509) are hinged to the corresponding locking rods (510), a guide plate (511) is slidably sleeved on the outside of the locking rod (510), both the guide plate (511) and the support plate (504) are fixedly installed inside the housing (1), a compression spring (506) is fixedly installed at the bottom of the lifting plate (508), the other end of the compression spring (506) is fixedly connected to the guide post (505), a convex plate (507) is fixedly installed at the top of the lifting plate (508), the convex plate (507) is movably abutted against the bottom of the ball (503), a circular hole is opened at the bottom of the conical shell (501), the convex plate (507) passes through the circular hole, and the diameter of the circular hole is smaller than the diameter of the ball (503).

3. The detecting device for the ground resistivity observation system according to claim 1, wherein, The guide rail (302) is fixedly installed on the front side of the housing (1), the locking plate (301) is slidably sleeved on the outside of the guide rail (302), and a compression spring (303) is fixedly installed between the two locking plates (301).

4. The detection device for the ground resistivity observation system according to claim 1, characterized in that A slot (401) is formed in the bottom of the buckle seat (4), buckle grooves (402) are formed in the inner walls on both sides of the slot (401), the buckle plate (301) is adapted to the slot (401) and the buckle grooves (402), and a chamfer (403) is arranged at the front end of the slot (401).

5. The detecting device for the ground resistivity observation system according to claim 1, characterized in that, Installation mechanisms (7) are arranged on both sides inside the housing (1). The installation mechanism (7) includes: a cross beam (702) and two clamping plates (701). The clamping plates (701) are slidably sleeved on the outside of the cross beam (702). A connecting spring (703) is fixedly installed between the two clamping plates (701). Vertical plates (215) are fixedly installed at the four corners of the bottom of the test panel (2). A clamping hole (216) is formed in the front side of the vertical plate (215). The clamping plate (701) is movably clamped in the corresponding clamping hole (216).

6. The detecting device for the ground resistivity observation system according to claim 5, wherein Four positioning frames (102) are fixedly installed on the bottom inner wall of the housing (1). The bottom end of the vertical plate (215) is movably inserted into the corresponding positioning frame (102). Through holes are formed on both sides of the housing (1). One end of the clamping plate (701) penetrates through the through hole and extends to the outside of the housing (1).

7. The detecting device for the ground resistivity observation system according to claim 1, wherein Fixed shafts (601) are fixedly installed on both sides of the housing (1). A lifting handle (6) is rotatably sleeved on the outside of the fixed shaft (601).

8. The detecting device for the ground resistivity observation system according to claim 1, characterized in that A humidity sensor (10), a controller (9) and an air extraction pump (8) are fixedly installed on the bottom inner wall of the housing (1). An air outlet pipe is communicated with the air outlet of the air extraction pump (8). The other end of the air outlet pipe extends to the outside of the housing (1). An equipment temperature display (212), a power switch (213) and a charging port (214) are arranged on the top of the test panel (2).

Images