Ultrahigh frequency sensor capable of resisting external interference

Abstract

The utility model relates to the technical field of electrical equipment sensors, in particular to an external interference resistant ultrahigh frequency sensor, which comprises a shell, a placement bin is arranged in the shell, a placement frame is detachably mounted in the placement bin, a signal sampling microprocessor is detachably mounted above the placement frame, and a signal processing module is detachably mounted above the signal sampling microprocessor. An ultrahigh-frequency partial discharge detection circuit is arranged between a signal sampling microprocessor and an ultrahigh-frequency electromagnetic wave acquisition antenna, and the output end of the ultrahigh-frequency electromagnetic wave acquisition antenna is electrically connected with the input end of the signal sampling microprocessor through the ultrahigh-frequency partial discharge detection circuit. The output end of the signal sampling microprocessor is connected with power transmission and transformation node equipment, the signal sampling microprocessor is high in sensitivity, high in ultrahigh frequency signal receiving capacity, reasonable in overall structure arrangement, high in signal transmission capacity, high in sensitivity, high in anti-interference capacity and stable in installation structure, a worker can place the device on the device, and interference of external electromagnetic waves is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment sensors, in particular to a UHF sensor resistant to external interference. Background Art

[0002] With the continuous development of the national economy and the continuous increase in the scale of my country's power system, the requirements for the safety and reliability of power grid operation are increasing. The safe operation of the power grid mainly depends on the safe operation of high-voltage electrical equipment, and the operational reliability of electrical equipment depends to a large extent on the quality of electrical equipment manufacturing and installation, as well as equipment inspection, operation and maintenance, and necessary preventive tests. The quality of UHF sensors mainly depends on technical parameters such as sensitivity, frequency band, and directivity. These technical parameters are mainly determined by the antenna in the UHF sensor.

[0003] Traditional UHF sensors have huge workload and low efficiency when in use. They cannot detect defects in time and have low anti-interference ability. External interference signals can easily enter the sensor, which has a great impact on the test results. Maintenance and calibration are very inconvenient, resulting in no guarantee of service life. The sensor may affect the normal operation of the equipment. Therefore, there is an urgent need for an UHF sensor that is resistant to external interference to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides the following technical solutions: an ultra-high frequency sensor resistant to external interference, comprising a shell, a placement bin is provided inside the shell, a placement rack is detachably installed inside the placement bin, a signal sampling microprocessor is detachably installed above the placement rack, positioning holes are evenly provided on the left and right sides of the shell, a bearing rack is detachably installed inside the shell, a fixing rack is evenly installed above the bearing rack, a support rod is detachably installed above the fixing rack, a cover plate is detachably installed above the fixing rack, an electromagnetic wave collecting antenna tube is fixedly installed on the upper side of the support rod, an ultra-high frequency electromagnetic wave collecting antenna is wound around the outer side of the electromagnetic wave collecting antenna tube, a packaging cover is detachably installed above the shell, and an anti-interference body is fixedly installed on the top of the packaging cover.

[0005] As an improvement of the above technical solution, fixed blocks are fixedly installed on the left and right sides of the support frame, and fastening screws are detachably installed on the top of the fixed blocks.

[0006] As an improvement of the above technical solution, a sealing gasket is fixedly installed above the shell.

[0007] As an improvement of the above technical solution, a display screen is detachably mounted on the front side of the shell, and a keypad is fixedly mounted on the front side of the shell, and the keypad is located on the left side of the display screen.

[0008] As an improvement of the above technical solution, the front side of the shell is evenly equipped with adjustment knobs, the adjustment knobs are located directly above the display screen, and the front side of the shell is evenly equipped with connection jacks.

[0009] As an improvement of the above technical solution, a battery compartment is detachably installed on the left side of the shell, and strip-shaped heat dissipation holes are evenly opened above the battery compartment.

[0010] Beneficial effects of the utility model:

[0011] An ultra-high frequency partial discharge detection circuit is provided between the signal sampling microprocessor and the ultra-high frequency electromagnetic wave collection antenna, and the output end of the ultra-high frequency electromagnetic wave collection antenna is electrically connected to the input end of the signal sampling microprocessor through the ultra-high frequency partial discharge detection circuit, and the output end of the signal sampling microprocessor is connected to the power transmission and transformation node equipment. The signal sampling microprocessor has high sensitivity to avoid external interference signals entering the sensor and affecting the test results. It has strong ultra-high frequency signal receiving capability, reasonable overall structure setting, strong transmission signal, high sensitivity, strong anti-interference ability and stable installation structure. The staff will install it above it, which effectively avoids interference from external electromagnetic waves and extends the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is the front view of the utility model;

[0013] Figure 2 This is a three-dimensional internal structure diagram of the utility model;

[0014] Figure 3 It is a top view of the utility model;

[0015] Figure 4 It is a front view of the utility model;

[0016] Figure 5 This is a schematic diagram of the interior of the housing of the utility model;

[0017] Figure 6 It is a schematic diagram of a placement rack of the utility model.

[0018] Figure numerals: 1. Shell; 2. Placement compartment; 3. Placement rack; 4. Signal sampling microprocessor; 5. Positioning hole; 6. Carrying rack; 7. Fixing block; 8. Fastening screw; 9. Fixing rack; 10. Support rod; 11. Cover plate; 12. Electromagnetic wave collection antenna tube; 13. UHF electromagnetic wave collection antenna; 14. Sealing gasket; 15. Packaging cover; 16. Display screen; 17. Keyboard; 18. Adjustment knob; 19. Connection jack; 20. Battery compartment; 21. Anti-interference body. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.

[0020] See also Figure 1-6 The utility model provides a technical solution for an ultra-high frequency sensor resistant to external interference: an ultra-high frequency sensor resistant to external interference, comprising a shell 1, a placement bin 2 is provided inside the shell 1, a placement rack 3 is detachably installed inside the placement bin 2, a signal sampling microprocessor 4 is detachably installed above the placement rack 3, positioning holes 5 are evenly provided on the left and right sides of the shell 1, a bearing rack 6 is detachably installed inside the shell 1, a fixing rack 9 is evenly installed above the bearing rack 6, a support rod 10 is detachably installed above the fixing rack 9, a cover plate 11 is detachably installed above the fixing rack 9, an electromagnetic wave collecting antenna tube 12 is fixedly installed on the upper side of the support rod 10, an ultra-high frequency electromagnetic wave collecting antenna 13 is wound around the outer side of the electromagnetic wave collecting antenna tube 12, a packaging cover 15 is detachably installed above the shell 1, and an anti-interference body 21 is fixedly installed on the top of the packaging cover 15.

[0021] In the present embodiment, an ultra-high frequency partial discharge detection circuit is provided between the signal sampling microprocessor 4 and the ultra-high frequency electromagnetic wave collection antenna 13, and the output end of the ultra-high frequency electromagnetic wave collection antenna 13 is electrically connected to the input end of the signal sampling microprocessor 4 through the ultra-high frequency partial discharge detection circuit, and the output end of the signal sampling microprocessor 4 is connected to the power transmission and transformation node equipment. The signal sampling microprocessor 4 has high sensitivity, strong ultra-high frequency signal receiving capability, reasonable overall structure setting, strong transmission signal, high sensitivity, strong anti-interference capability, and stable installation structure. The staff places the anti-interference body 21 above the packaging cover 15, which effectively avoids interference from external electromagnetic waves.

[0022] Specifically, the left and right sides of the support frame 6 are fixedly mounted with fixing blocks 7 , and the top of the fixing blocks 7 is detachably mounted with fastening screws 8 .

[0023] In this embodiment, by providing a fixing block 7, it is firmly fixed inside the shell 1, which can improve the equipment status control and operation and inspection management, and facilitate the disassembly of the carrier 6.

[0024] Specifically, a sealing gasket 14 is fixedly installed above the housing 1 .

[0025] In this embodiment, the shell 1 and the packaging cover 15 are both made of integrated packaging cast aluminum material, the shell 1 has high structural strength and is less affected by the environment. A sealing gasket 14 is installed in an annular closed loop on the top of the inner wall of the shell 1, and the packaging cover 15 is sealed and connected to the shell 1 through the sealing gasket 14.

[0026] Specifically, a display screen 16 is detachably mounted on the front side of the housing 1 , and a keypad 17 is fixedly mounted on the front side of the housing 1 . The keypad 17 is located on the left side of the display screen 16 .

[0027] In this embodiment, by providing a display screen 16, it is convenient to display the data inside the device and to control the device.

[0028] Specifically, the front side of the housing 1 is evenly equipped with adjustment knobs 18 , the adjustment knobs 18 are located directly above the display screen 16 , and the front side of the housing 1 is evenly equipped with connection jacks 19 .

[0029] In this embodiment, by setting up two adjustment knobs 18, it is convenient to adjust the device. By using the connecting jack 19, it is convenient to insert the connecting wire into the connecting jack 19, so as to connect the external device to the present device.

[0030] Specifically, a battery compartment 20 is detachably mounted on the left side of the housing 1 , and strip-shaped heat dissipation holes are evenly arranged above the battery compartment 20 .

[0031] In this embodiment, a battery compartment 20 is arranged on the outer side wall of the shell 1, and a lithium-ion battery is installed in the battery compartment 20 to supply power to the ultra-high frequency partial discharge sensor and detect the power AD for processing. The charging and discharging cycle efficiency is high, the battery loss is small, and the battery can be ensured to work continuously for a long time, thereby improving the use time.

[0032] When in use, the components required inside the UHF sensor are assembled in sequence. All the components are universal standard parts or components known to technical personnel in this field. Their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods. After the assembly is completed, the UHF electromagnetic wave acquisition antenna 13 is used to collect UHF electromagnetic wave signals. Then, the UHF electromagnetic wave acquisition antenna 13 samples the sampled signals into the microprocessor 4, and the signal sampling microprocessor 4 is then transmitted to the power transmission and transformation node equipment through wireless communication access. Then, the cover plate 11 on the upper part of the shell 1 is tightly closed to make the inside of the shell 1 a closed cavity. The overall structure is reasonably set, the transmission signal is strong, the sensitivity is high, the anti-interference ability is strong, and the installation structure is stable. The staff places the anti-interference body 21 on the top of the packaging cover 15, which effectively avoids the interference of external electromagnetic waves and can shield external electromagnetic interference. It is easy to use, safe and reliable, and convenient to directly store the multimeter, making it more convenient to carry and detect, and the supporting ground is more stable.

[0033] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A UHF sensor resistant to external interference, comprising a housing (1), characterized in that: A placement bin (2) is provided inside the shell (1), a placement rack (3) is detachably mounted inside the placement bin (2), a signal sampling microprocessor (4) is detachably mounted above the placement rack (3), positioning holes (5) are evenly provided on the left and right sides of the shell (1), a bearing rack (6) is detachably mounted inside the shell (1), a fixing rack (9) is evenly mounted above the bearing rack (6), a support rod (10) is detachably mounted above the fixing rack (9), a cover plate (11) is detachably mounted above the fixing rack (9), an electromagnetic wave collection antenna tube (12) is fixedly mounted on the upper side of the support rod (10), a UHF electromagnetic wave collection antenna (13) is wound around the outer side of the electromagnetic wave collection antenna tube (12), a packaging cover (15) is detachably mounted above the shell (1), and an anti-interference body (21) is fixedly mounted on the top of the packaging cover (15).

2. The ultra-high frequency sensor resistant to external interference according to claim 1, characterized in that: Fixed blocks (7) are fixedly mounted on the left and right sides of the carrier frame (6), and a fastening screw (8) is detachably mounted on the top of the fixed block (7).

3. The ultra-high frequency sensor resistant to external interference according to claim 1, characterized in that: A sealing gasket (14) is fixedly mounted above the housing (1).

4. The ultra-high frequency sensor resistant to external interference according to claim 1, characterized in that: A display screen (16) is detachably mounted on the front side of the housing (1), and a keypad (17) is fixedly mounted on the front side of the housing (1), wherein the keypad (17) is located on the left side of the display screen (16).

5. The ultra-high frequency sensor resistant to external interference according to claim 1, characterized in that: Adjustment knobs (18) are evenly installed on the front side of the housing (1), and the adjustment knobs (18) are located directly above the display screen (16). Connection jacks (19) are evenly arranged on the front side of the housing (1).

6. The ultra-high frequency sensor resistant to external interference according to claim 1, characterized in that: A battery compartment (20) is detachably mounted on the left side of the housing (1), and strip-shaped heat dissipation holes are evenly arranged above the battery compartment (20).

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