CN103630734A - Full-voltage full-loop self-checking capacitive-type electroscope - Google Patents

Abstract

The invention discloses a full-voltage full-circuit self-test capacitive electroscope, which comprises an electroscope circuit box body, an insulating operating rod and a handle, and a detection probe and a display screen are arranged on the electroscope circuit box body; The electrical circuit box body includes a microcontroller module and a self-test circuit module; the electroscope circuit box body is provided with a pressure level conversion circuit box body and a voice broadcast module; the input terminal of the pressure level conversion circuit box body and the detection probe The output end is connected to the microcontroller module; the input end of the pressure level conversion circuit box is also connected to the self-inspection circuit module through the detection probe, and the voice broadcast module is connected to the microcontroller module. The electroscope of the full-voltage full-loop self-checking capacitive electroscope of the present invention can realize full-voltage switching. At the same time, the electroscope of the present invention can also broadcast the voltage level selected by the operator during the self-inspection, reminding the operator to make a second confirmation, thereby effectively avoiding accidents caused by the operator choosing a voltage level that does not match.

Description

A full-voltage full-loop self-test capacitive electroscope

technical field

The invention relates to an electroscope, in particular to a full-voltage full-loop self-test capacitance type electroscope.

Background technique

In accordance with the requirements of the "State Grid Corporation Electricity Safety Work Regulations", when conducting electrical inspections, qualified contact electroscopes with corresponding voltage levels should be used. The scope of use of the electroscope is 6KV, 10 KV, 35 KV, 110 KV, 220 KV, 330 KV, 500 KV and other AC voltages. At present, although the contact electroscope used in the electric inspection of substation and line work has realized the functions of full-circuit self-inspection, sound and light alarm, etc., and when it is impossible to test on the electric equipment, the power frequency high-voltage generator can be used for confirmation inspection. Whether the electrical appliance is in good condition, but it does not have the function of full voltage switching during on-site electrical inspection. However, in actual work, it is often necessary to measure a variety of circuits with different voltage levels, which leads to the need for staff to carry a variety of measurement tools during substation and line operations, which is very inconvenient to carry. At the same time, every time a circuit of a different voltage level is measured, the measurement tool of the corresponding level needs to be replaced, which also brings inconvenience to the operation of the staff.

Contents of the invention

The purpose of the present invention is to provide a full-voltage full-loop self-test capacitive electroscope that can meet various voltage levels.

In order to achieve the above object, the technical solution of the present invention is as follows: a full-voltage full-circuit self-test capacitive electroscope, including an electroscope circuit box, an insulating operating rod and a handle, and a detection probe is arranged on the electroscope circuit box. needle and display screen; the electroscope circuit box body includes a microcontroller module and a self-test circuit module; the electroscope circuit box body is provided with a pressure level conversion circuit box body and a voice broadcast module; the pressure level conversion circuit box The input end of the body is connected with the detection probe, and its output is connected with the microcontroller module; the input end of the pressure level conversion circuit box is also connected with the self-inspection circuit module through the detection probe, and the voice broadcast module is connected with the microcontroller The modules are connected.

After adopting the above technical scheme, compared with the prior art, the present invention has the following advantages: the electroscope circuit box of the full-voltage full-circuit self-test capacitance type electroscope of the present invention is provided with a voltage level conversion circuit box body, through the voltage level conversion The circuit box can realize full-voltage switching, which can meet the electrical inspection of equipment with different voltage levels, thereby simplifying the configuration of safety tools, bringing great convenience to the staff, and improving the operating efficiency of the staff; at the same time, the present invention also Equipped with a voice broadcast module, when the self-test button in the self-test circuit module is pressed, the electroscope can broadcast the voltage level selected by the operator while self-testing, reminding the operator to make a second confirmation, thus effectively avoiding the operation Accidents occurred due to the selection of unmatched voltage levels for electrical inspection.

Preferably, the voltage level conversion circuit box includes a DC power supply, a transfer switch and a plurality of voltage divider resistors, one end of the plurality of voltage divider resistors arranged in parallel is connected to the DC power supply, and the other end is connected to the detection probe through a transfer switch , and one end of each voltage-dividing resistor connected to the transfer switch is connected to the microcontroller module through a current-limiting resistor. The structure design of the voltage level conversion circuit box body is simple, and the components and parts used are less, and the cost is lower, but it can effectively realize the selection function of the voltage level.

As an improvement, the electroscope circuit box further includes a rod length positioning indicating module, and the rod length positioning indicating module is connected with a microcontroller module. Different voltage levels correspond to different lengths of the insulating operating rod, and the higher the voltage level, the longer the insulating operating rod. The existence of this module can make the display screen display different lengths of insulating operating rods corresponding to different voltage levels. The operator only needs to adjust the length of the insulating operating rod according to the length value of the insulating operating rod displayed on the display screen, which is simple and convenient.

Description of drawings

Accompanying drawing 1 is the structure schematic diagram of the full-voltage full-loop self-test capacitive electroscope of the present invention.

Accompanying drawing 2 is the circuit diagram of the electroscope circuit box body in the full-voltage full-loop self-test capacitance type electroscope of the present invention.

As shown in the figure: 1. Electroscope circuit box 2. Insulated operating rod 3. Handle 4. Detection probe 5. Display 6. Microcontroller module 7. Self-test circuit module 8. Pressure level conversion circuit box 9 , Voice broadcast module 10, DC power supply 11, transfer switch 12, voltage divider resistor 13, current limiting resistor 14, self-check button 15, first resistor 16, second resistor 17, rod length positioning indicator module 18, high voltage equipment.

Detailed ways

The present invention will be further elaborated below by means of the accompanying drawings and examples.

As shown in Figures 1 and 2: a full-voltage full-circuit self-test capacitive electroscope, including an electroscope circuit box 1, an insulating operating rod 2 and a handle 3, the insulating operating rod 2 is a retractable structure, and the rod The scale value is also marked on it. The electroscope circuit box 1 is provided with detection probes 4 and a display screen 5 . The electroscope circuit box 1 includes a microcontroller module 6 and a self-test circuit module 7 . The electroscope circuit box 1 is provided with a voltage level conversion circuit box 8 and a voice broadcast module 9, and the voice broadcast module 9 referred to here is actually a sound generator. Since the pressure level conversion circuit box 8 is inside the electroscope circuit box 1, it is represented by a dotted line in the figure, as shown in FIG. 1 . The input end of the pressure level conversion circuit box 8 is connected to the detection probe 4 , and its output end is connected to the microcontroller module 6 . The input end of the pressure conversion circuit box 8 is also connected to the self-test circuit module 7 through the detection probe 4 , and the voice broadcast module 9 is connected to the microcontroller module 6 . In this embodiment, the voltage level conversion circuit box 8 includes a DC power supply 10, a transfer switch 11, and a plurality of voltage dividing resistors 12, and the multiple voltage dividing resistors 12 specifically refer to resistors Z1, resistors Z2, ..., resistors ZN, such as Figure 2 shows. After a plurality of voltage dividing resistors 12 are connected in parallel, one end is connected to the DC power supply 10, and the other end is connected to the detection probe 4 through the transfer switch 11, and a first resistor 15 is connected in series between the transfer switch 11 and the detection probe 4 . One end of each voltage dividing resistor 12 connected to the transfer switch 11 is connected to the microcontroller module 6 through a current limiting resistor 13. The current limiting resistor 13 referred to here specifically refers to resistors R1, resistors R2, ..., resistors RN, that is One end of resistor Z1 connected to transfer switch 11 is connected to microcontroller module 6 through resistor R1, and one end of resistor Z2 connected to transfer switch 11 is connected to microcontroller module 6 through resistor R2 until resistor ZN is connected to transfer switch 11 One end of each is connected to the microcontroller module 6 through a resistor RN, and each voltage dividing resistor 12 corresponds to a current limiting resistor 13 one by one. The resistance value of each voltage dividing resistor 12 is different, and the voltage dividing resistor 12 with different resistance values corresponds to different voltage levels. By adjusting the conversion switch 11 and connecting the corresponding voltage level circuit, the voltage level conversion function can be realized. The self-test circuit module 7 includes a second resistor 16 and a self-test button 14 , one end of the second resistor 16 and the self-test button 14 are connected in series to ground, and the other end is connected to the detection probe 4 . The electroscope circuit box 1 also includes a rod length positioning indicating module 17 , and the rod length positioning indicating module 17 is connected with the microcontroller module 6 . Different voltage levels correspond to different lengths of the insulating operating rod 2, and the higher the voltage level, the longer the length of the insulating operating rod 2. The presence of this module enables the display screen 5 to display the lengths of different insulating rods operating 2 corresponding to different voltage levels, and the operator only needs to adjust the length of the insulating operating rod 2 according to the displayed length value of the insulating operating rod 2, which is simple and convenient. Of course, voltage level information can also be displayed on the display screen of the present invention. The number 18 shown in FIG. 2 is the high-voltage equipment 18 to be tested.

The electroscope circuit box body 1 of the full-voltage full-loop self-test capacitance type electroscope of the present invention is provided with a voltage level conversion circuit box body 8, through which the voltage level conversion circuit box body 8 can realize full voltage switching, and can meet different voltage level equipment. The electrical inspection, thereby simplifying the configuration of safety tools, brings great convenience to the staff, and also improves the operating efficiency of the staff; at the same time, the present invention is also provided with a voice broadcast module 9, when pressing the self-test circuit module 7 After the self-inspection button 14, the electroscope can also broadcast the voltage level selected by the operator during the self-inspection, reminding the operator to make a second confirmation, so as to effectively prevent the operator from choosing a voltage level that does not match. ACCIDENT.

The above description is based on the embodiment as inspiration, and through the above description content, relevant workers can completely make various changes and modifications within the scope of not departing from the idea of the invention. The technical scope of the present invention is not limited to the content in the description, and its protection must be determined according to the scope of the claims.

Claims (3)

1. A full-voltage full-circuit self-test capacitive electroscope, including an electroscope circuit box (1), an insulating operating rod (2) and a handle (3), and the electroscope circuit box (1) is equipped with Detection probe (4) and display screen (5); the electroscope circuit box (1) includes a microcontroller module (6) and a self-test circuit module (7); characterized in that: the electroscope circuit box The body (1) is equipped with a pressure level conversion circuit box (8) and a voice broadcast module (9); the input end of the pressure level conversion circuit box (8) is connected to the detection probe (4), and its output end It is connected with the microcontroller module (6); the input terminal of the pressure level conversion circuit box (8) is also connected with the self-inspection circuit module (7) through the detection probe (4), and the voice broadcast module (9) is connected with the micro The controller module (6) is connected. 2. A full-voltage full-circuit self-test capacitive electroscope according to claim 1, characterized in that: the voltage level conversion circuit box (8) includes a DC power supply (10), a transfer switch (11) and A plurality of voltage dividing resistors (12), one end of the multiple voltage dividing resistors (12) connected in parallel is connected to the DC power supply (10), and the other end is connected to the detection probe (4) through the transfer switch (11), each One end of the voltage dividing resistor (12) connected to the transfer switch (11) is connected to the microcontroller module (6) through the current limiting resistor (13). 3. A full-voltage full-circuit self-test capacitive electroscope according to claim 1 or 2, characterized in that: the electroscope circuit box (1) also includes a rod length positioning indicator module (17), the The rod length positioning indicating module (17) is connected with the microcontroller module (6).

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