Electrical short-seal test device with prompt function

Abstract

This invention relates to an electrical short-seal test device with a prompting function, comprising: a flashing oscillator; a first transistor, a second transistor, a third transistor, a first short-seal clip, and a second short-seal clip, each transistor having a collector, an emitter, and a base; the on / off states of the conduction paths of the third transistor and the second transistor are opposite, and a flexible light-emitting strip is connected to the current loop formed by the base and emitter of the third transistor. When the first and second short-seal clips are not properly clamped, the flexible light-emitting strip and the equipment alarm light flash alternately, prompting the operator that the main short-seal wire is not properly connected; when the first and second short-seal clips are properly clamped, the flexible light-emitting strip remains constantly lit, and the equipment alarm light goes out, indicating that the main short-seal wire is correctly connected. Furthermore, after the test is completed, the constantly lit flexible light-emitting strip is highly conspicuous, prompting the operator to dismantle the electrical short-seal test device.

Description

Technical Field

[0001] This invention relates to an electrical short-circuit test device with a prompting function. Background Technology

[0002] Electrical equipment testing, especially periodic preventative testing of operating electrical equipment, is a necessary means to ensure safe power supply. When conducting certain equipment tests, short electrical conductors are often required. Currently, commonly used short conductors are single copper wires or other metal conductors, and there are many of them. Their placement varies depending on the type of equipment, its geometry, and the installation environment, resulting in different connection shapes. Furthermore, the testing time is often limited by limited "window" time, making it easy for short conductors to be missed or not removed after the test. When the equipment under maintenance is put into operation, these missed short conductors will pose a significant safety hazard to the tested equipment, accompanying equipment, and on-site personnel or operators, ranging from minor equipment damage to serious personal injury.

[0003] To further improve power supply maintenance processes and ensure power supply safety, make full use of limited maintenance windows, improve maintenance quality, ensure the accuracy and completeness of equipment maintenance and testing results, and minimize unsafe factors caused by missed disassembly or reassembly of short-circuit test lines during equipment maintenance, this project aims to prevent such accidents through technical means, ensure safe power supply, and nip problems in the bud. It also provides necessary practical tools to further improve on-site maintenance efficiency and ensure the accuracy and completeness of equipment maintenance and testing results, thereby filling the gaps in existing testing equipment and processes.

[0004] Existing short sealing lines mainly include structures disclosed in standards such as "CN203787821U", "CN107271736A", and "CN106324398A". When using these short sealing lines for testing, they are sometimes forgotten to be removed, posing a safety hazard. Furthermore, during use, due to factors such as poor contact, the short sealing line may not actually perform its intended sealing function, thus endangering test safety, affecting the accuracy of test data, and leading to qualitative errors in the results. Summary of the Invention

[0005] The purpose of this invention is to provide an electrical short-seal test device with a prompting function, which solves the problems of reducing missed disassembly and reducing test errors.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] This invention provides an electrical short-circuit test device with a prompting function, the core of which includes:

[0008] Microcontroller, flexible light-emitting strip;

[0009] The microcontroller also includes the following:

[0010] Miniature push-button switch K; flashing oscillator with a small number of peripheral components;

[0011] The first transistor, the second transistor, and the third transistor each have a collector and an emitter defined as the two ends of a conduction path, and each transistor also includes a base, wherein the voltage applied between the base and the emitter controls the on / off state of the conduction path.

[0012] The base of the first transistor is connected to the output of the flash oscillator, and a device alarm light, including a current-limiting resistor, is provided in the conduction path of the first transistor.

[0013] A power supply for providing current to the flash oscillator, the first transistor, the second transistor, the third transistor, and the flexible light-emitting strip;

[0014] The current loop formed by the base and emitter of the second transistor is connected to the collector of the first transistor, so that the conduction mode of the second transistor is in the same on / off state as the conduction mode of the first transistor.

[0015] In this transistor, the base of the third transistor is connected to the emitter of the second transistor. Since the current polarity of each pin of the second transistor is opposite to that of each pin of the first and third transistors, the conduction state between the collector and emitter of the third transistor is also opposite to that of the first and second transistors.

[0016] The collector of the third transistor, which includes a current-limiting resistor, is connected to the positive terminal of the power supply, the emitter is connected to one end of the flexible light-emitting strip, and the other end of the flexible light-emitting strip is connected to the negative terminal of the power supply.

[0017] The base of the third transistor is connected to the emitter of the second transistor, which includes a current-limiting resistor, so that the conduction state between the collector and emitter of the third transistor is opposite to that of the first and second transistors, thereby causing the device alarm light driven by the collector of the first transistor and the flexible light-emitting strip driven by the emitter of the third transistor to light up alternately.

[0018] The first and second short sealing clips are connected via a main short sealing line and a short sealing signal acquisition line. The corresponding ends of the main short sealing line and the short sealing signal acquisition line are connected to the corresponding ends of the microcontroller. Each of the first and second short sealing clips has two clamps that function as switches. The wire connecting one clamp of the first short sealing clip and one clamp of the second short sealing clip serves as the main short sealing line. The other clamp of each of the first and second short sealing clips is connected to two short sealing signal acquisition lines led from the microcontroller. When a conductive metal object is clamped between the two clamps, the first and second short sealing clips, acting as switches, connect the reset pin of the flash oscillator through one end of the short sealing signal acquisition line, the first short sealing clip, the main short sealing line, the second short sealing clip, the other end of the short sealing signal acquisition line, and the negative terminal of the power supply. The flash oscillator reset pin receives a low level and stops oscillating, thus turning off the equipment alarm light and keeping the flexible light strip constantly lit.

[0019] Preferably, the flexible light-emitting strip, the main short sealing line, and the short sealing signal acquisition line are packaged together and encapsulated in a transparent flexible tube.

[0020] Furthermore, the flexible light-emitting strip is composed of a voltage-activated light-emitting line made of linear organic light-emitting body, and the light-emitting line extends along the length of the main short sealing line.

[0021] Furthermore, the miniature push-button switch K, the flashing oscillator, the power supply, the first transistor, the second transistor, the third transistor, and the device alarm light are encapsulated in the handle of the first short clip or the second short clip.

[0022] Furthermore, the short signal acquisition line extending from the first or second short clamp is at least partially encapsulated in a transparent flexible tube, thus making the entire line a complete line segment in appearance.

[0023] Preferably, the first short sealing clip and the second short sealing clip are covered with an insulating sheath.

[0024] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0025] The electrical short-seal test device of the present invention, with its indication function, incorporates a flashing oscillator, a first transistor, a second transistor, a third transistor, an equipment alarm light, and a flexible light-emitting strip. These components, combined with the first and second short-seal clips, enable the flexible light-emitting strip and the equipment alarm light to flash alternately when the first and second short-seal clips are not properly clamped, indicating to the operator that the main short-seal wire is not correctly connected. When the first and second short-seal clips are properly clamped, the flexible light-emitting strip remains constantly lit, indicating that the main short-seal wire is correctly connected. Furthermore, after the test is completed, the constantly lit flexible light-emitting strip is highly visible, prompting the operator to dismantle the electrical short-seal test device. Attached Figure Description

[0026] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or units. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0027] Figure 1 This is a structural block diagram of a preferred embodiment of the present invention;

[0028] Figure 2 It is a circuit schematic;

[0029] Figure 3 This is an external view of a preferred embodiment of the present invention;

[0030] The reference numerals in the attached figures are explained as follows:

[0031] 100. Microcontroller;

[0032] 1. Flash oscillator;

[0033] 2. First transistor;

[0034] 3. Second transistor;

[0035] 4. The third transistor;

[0036] 5. Equipment alarm lights;

[0037] 6. Power supply;

[0038] 7. Flexible light-emitting strip; 71. Organic light-emitting body;

[0039] 8. First short sealing clip;

[0040] 9. Second short sealing clip;

[0041] 10. Main short-term sealing line;

[0042] 11. Transparent flexible tube;

[0043] 12. Short-circuit signal acquisition line;

[0044] 13. Equivalent resistance of external equipment;

[0045] 14. Terminal blocks of the device under test. Detailed Implementation

[0046] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0048] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0049] like Figure 3 The electrical short-seal test device with a prompting function shown includes a first short-seal clamp 8 and a second short-seal clamp 9. Both the first short-seal clamp 8 and the second short-seal clamp 9 include two jaws (jaws a and b). The jaws a of the first short-seal clamp 8 and the jaws b of the second short-seal clamp 9 are connected by a main short-seal line 10, so that when the first short-seal clamp 8 and the second short-seal clamp 9 clamp the terminal 14 of the device under test on the device being short-sealed, the device is short-sealed.

[0050] The main short sealing line 10, the short sealing signal acquisition line 12, and the flexible light-emitting strip 7 are encased in a transparent flexible tube 11, thus making the entire line a complete line segment in appearance.

[0051] The first short clamp 8 and the second short clamp 9 are covered with an insulating sheath (see...). Figure 3 An insulating sheath covers the handle and grippers, providing insulation protection.

[0052] A microcontroller 100 is also installed on the first short sealing clamp 8. When the switch K on the microcontroller 100 is turned on, the flexible light-emitting strip 7 (a light-emitting line composed of organic light-emitting elements 71) installed inside the transparent flexible tube 11 flashes, indicating that the first short sealing clamp 8 and the second short sealing clamp 9 have not yet clamped the terminal 14 of the device under test (or even if the terminal 14 of the device under test is clamped, it is not clamped securely); when the first short sealing clamp 8 and the second short sealing clamp 9 successfully clamp the terminal 14 of the device under test of the short-sealed device, the flexible light-emitting strip 7 remains constantly lit to indicate that the short sealing is successful, and can also remind the operator to remove the electrical short sealing test device after the test is completed through a conspicuous light strip. This improves safety. The specific principle is described later.

[0053] like Figure 1The electrical short-seal test device mainly includes a power supply 6, a miniature push-button switch K, a flashing oscillator 1, a first transistor 2, a second transistor 3, a third transistor 4, an equipment alarm light 5, a flexible light-emitting strip 7, a main short-seal line 10, a first short-seal clamp 8, and a second short-seal clamp 9.

[0054] like Figure 2 The circuit schematic shown includes a power supply 6, a miniature push-button switch K, a flashing oscillator 1, a first transistor 2, a second transistor 3, a third transistor 4, and an equipment alarm light 5, all packaged together to form a microcontroller 100.

[0055] In this system, power supply 6 is a 3V DC power supply, and flash oscillator 1 is a flash oscillator chip with the model number "TCL5551-SOP8". The first transistor 2 is called an amplifier, the second transistor 3 is called an inverter, and the third transistor 4 is called a light strip driver. The first transistor 2, the second transistor 3, and the third transistor 4 all have a base, a collector, and an emitter. When there is a small current between the base and the emitter, it can conduct between the collector and the emitter, acting as a switch. Figure 2 In the diagram, BG1 is the first transistor 2, BG2 is the second transistor 3, and BG3 is the third transistor 4. Figure 2 A transistor has three pins: the horizontal line is the base, the one with the arrow is the emitter, and the other pin is the collector.

[0056] The circuit principle is briefly analyzed as follows, such as Figure 2 :

[0057] When the power switch K is pressed (closed), and no specific metal conductor is clamped in the first short clip 8 or the second short clip 9, the TCL5551-SOP8 flash oscillator 1 is powered on. Because its pin 4 (RESET, also known as the reset pin) is set to a high level through the pull-up resistor R3, the TCL5551-SOP8 flash oscillator 1 begins to oscillate, and a square wave signal is output from pin 3 (OUT) of the flash oscillator 1. The oscillation frequency and output pulse duty cycle are determined by the values ​​of R1, R2, and C1 in the circuit, and by the circuit consisting of pins 7 (DISCH), 6 (THRES), and 2 (TRIG) of the flash oscillator 1.

[0058] The square wave signal output from pin 3 (OUT) of flash oscillator 1 is current-limited by resistor R4 and sent to the base of the first transistor 2 (also called flash signal amplifier or transistor BG1), forming a current loop with the emitter of BG1, causing the collector and emitter of BG1 to conduct. After the collector and emitter of BG1 conduct, its collector current flows from the positive terminal of the power supply through resistor R5 and then through the LED (equipment alarm light 5). Since the signal output from pin 3 (OUT) of flash oscillator 1 is a square wave at this time, the LED (equipment alarm light 5) flashes at the frequency of the square wave signal output from pin 3 (OUT) of flash oscillator 1.

[0059] Since the base of the second transistor 3 (also known as the flash signal inverter or transistor BG2) is connected to the collector of BG1, which is the negative terminal of the LED (equipment alarm light 5), when the collector of BG1 is at a low level, i.e. the LED (equipment alarm light 5) is lit, the emitter current of BG2 flows through the base of BG2, the current-limiting resistor R7, the collector and emitter of BG1 to the negative terminal of the power supply after being limited by the resistor R6. At this time, the collector and emitter of BG2 are connected, causing the base of BG3 to be connected to the negative terminal of the power supply. The emitter of BG3 is connected to the negative terminal of the power supply 6 through the organic light-emitting body 71 in the flexible light-emitting strip 7. At this time, the voltage between the base and emitter of BG3 is 0, that is, no base current flows through the base and emitter of BG3. The collector and emitter of BG3 are not connected. The flexible light-emitting strip 7 (the flexible light-emitting strip 7 is composed of organic light-emitting body 71, and can also be called flexible light-emitting line. This light strip extends along the length of the main short sealing line 10 and is encapsulated in the transparent tube 11 together with the main short sealing line 10) is extinguished because the collector and emitter of BG3 are blocked.

[0060] When the collector of BG1 is at a high level, i.e., when the LED (equipment alarm light 5) is off, the emitter and base potentials of the flash signal inverter, i.e., transistor BG2, are equal. At this time, the collector and emitter of BG2 are not conducting, causing the base potential of BG3 to be equal to the positive terminal of the power supply. The base current of BG3 flows through the current-limiting resistor R6 and the flexible light-emitting line of the emitter of BG3 to the negative terminal of the power supply 6. At this time, the collector and emitter of BG3 are conducting. The positive power supply is sent through the current-limiting resistor R8 and the collector and emitter of BG3 to the positive terminal of the flexible light-emitting strip 7, and the flexible light-emitting strip 7 is lit due to being energized.

[0061] Since the lighting signal sent to the flexible light-emitting strip 7 is the same as the lighting signal sent to the LED (equipment alarm light 5) via the flash signal inverter BG2, the lighting process of the LED (equipment alarm light 5) and the lighting process of the flexible light-emitting strip 7 are alternating.

[0062] When the first short sealing clip 8 and the second short sealing clip 9 clamp onto a specific metal conductor, the jaws a and b of the first short sealing clip 8 and the second short sealing clip 9 are connected through the clamped metal conductor, that is, the main short sealing line 10 is connected to the short sealing signal acquisition line 12, which in turn connects pin 4 (RESET) of the TCL5551-SOP8 flash oscillator 1 inside the microcontroller 100 to the negative terminal of the power supply 6. At this time, pin 4 (RESET) of the TCL5551-SOP8 flash oscillator 1 is at a low level, causing the TCL5551-SOP8 flash oscillator 1 to stop oscillating. At this time, pin 3 (OUT) of the flash oscillator 1 outputs a low level (reset), which remains until pin 4 (RESET) of the TCL5551-SOP8 flash oscillator 1 is at a high level (set).

[0063] At this time, the base of the flash signal amplifier (first transistor 2), namely transistor BG1, is also at a low level, the collector and emitter of BG1 are cut off, and the LED (equipment alarm light 5) is turned off.

[0064] Meanwhile, the emitter and base potentials of the flash signal inverter (second transistor 3), i.e., transistor BG2, are equal. At this time, the collector and emitter of BG2 are not conducting, causing the base potential of BG3 to be equal to the positive terminal of power supply 6. The base current of BG3 flows through the current-limiting resistor R6 and the flexible light-emitting line of the emitter of BG3 to the negative terminal of power supply 6. At this time, the collector and emitter of BG3 are conducting. The positive power supply flows through the current-limiting resistor R8 and the collector and emitter of BG3 to the positive terminal of the flexible light-emitting line (flexible light-emitting strip 7), the organic light-emitting body 71, and the negative terminal of the power supply. The flexible light-emitting line (flexible light-emitting strip 7) is lit up due to being energized, and it continues to be lit because the TCL5551-SOP8 flash oscillator 1 stops oscillating.

[0065] The usage process is as follows:

[0066] 1. De-energize the equipment to be used with the "Electrical Short-Stop Test Device with Indication Function" and take relevant safety measures according to the maintenance and testing procedures. Ensure that the equipment to be short-stopped is disconnected (isolated) from other live lines. Turn on the power switch of the "Electrical Short-Stop Test Device with Indication Function". You will see the equipment alarm light 5 and the flexible light strip 7 flashing alternately. Then, clamp the first short-stop clip 8 and the second short-stop clip 9 onto the same metal rod. The equipment alarm light 5 will turn off and the flexible light strip 7 will change from flashing to constantly lit, indicating that the "Electrical Short-Stop Test Device with Indication Function" is intact.

[0067] 2. Securely clamp the first short-sealing clip 8 and the second short-sealing clip 9 of the "Electrical Short-Sealing Test Device with Indication Function" onto the two compliant conductive metal objects that need to be short-sealed. At this time, the equipment alarm light 5 of the "Electrical Short-Sealing Test Device with Indication Function" will turn off, and the flexible light strip 7 will change from flashing to constant light, indicating that the short-sealing is successful. (For equipment that requires multiple short-sealing points, multiple electrical short-sealing test devices with the same function can be connected one by one).

[0068] 3. Upon completion of this maintenance and testing work, first collect each component completely, then turn off the power switch K of the electrical short-seal test device one by one. Do not turn off the power switch K of the electrical short-seal test device one component at a time before collecting them all at once, as this can easily lead to omissions or missed components, leaving potential faults!

[0069] 4. Place the recovered electrical short-sealing test device back into the dedicated storage box and count the quantity to ensure that the quantity is consistent with the original quantity taken out.

[0070] It has the following beneficial effects:

[0071] By making full use of the limited "window" time, the illumination status of the equipment fault alarm lights (5 lights) and the flexible luminous strip (7) can indicate whether the short-circuit sealing was successful, thereby improving the quality of maintenance. This eliminates unsafe factors that could arise during equipment maintenance and testing due to incomplete or faulty tools, thus ensuring safe power supply operation. It further improves on-site maintenance and testing efficiency and ensures that equipment maintenance and testing are flawless. After each operation, the constantly lit flexible luminous strip (7) clearly reminds on-site personnel to remove the "electrical short-circuit sealing test device with indication function," preventing omissions.

[0072] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An electrical short-circuit test device with a prompting function, characterized in that, include: Microcontroller, flexible light-emitting strip; The microcontroller includes the following: Miniature push-button switch K; flashing oscillator with a small number of peripheral components; The first transistor, the second transistor, and the third transistor are configured such that the voltage applied between the base and the emitter controls the on / off state of the conduction path. The first transistor is an amplifier, the second transistor is an inverter, and the third transistor is an optical strip driver. The base of the first transistor is connected to the output of the flash oscillator, and a device alarm light, including a current-limiting resistor, is provided in the conduction path of the first transistor. The power supply provides current to the flash oscillator, the first transistor, the second transistor, the third transistor, and the flexible light-emitting strip; The current loop formed by the base and emitter of the second transistor is connected to the collector of the first transistor, so that the conduction mode of the second transistor is in the same on / off state as the conduction mode of the first transistor. The base of the third transistor is connected to the emitter of the second transistor. Since the current polarity of each pin of the second transistor is opposite to that of each pin of the first and third transistors, the conduction state between the collector and emitter of the third transistor is also opposite to that of the first and second transistors. The collector of the third transistor, which includes a current-limiting resistor, is connected to the positive terminal of the power supply, the emitter is connected to one end of the flexible light-emitting strip, and the other end of the flexible light-emitting strip is connected to the negative terminal of the power supply. The base of the third transistor is connected to the emitter of the second transistor, which includes a current-limiting resistor, so that the conduction state between the collector and emitter of the third transistor is opposite to that of the first and second transistors, causing the device alarm light driven by the collector of the first transistor and the flexible light-emitting strip driven by the emitter of the third transistor to light up alternately. The first and second short sealing clips are connected via a main short sealing line and a short sealing signal acquisition line. The corresponding ends of the main short sealing line and the short sealing signal acquisition line are connected to the corresponding ends of the microcontroller. Both the first and second short sealing clips have two clamps that function as switches. The wire connecting one clamp of the first short sealing clip and one clamp of the second short sealing clip serves as the main short sealing line. The other clamp of each of the first and second short sealing clips is connected to two short sealing signal acquisition lines led out from the microcontroller. When a conductive metal object is clamped between the two clamps, the first and second short sealing clips, acting as switches, connect the reset pin of the flash oscillator through one end of the short sealing signal acquisition line, the first short sealing clip, the main short sealing line, the second short sealing clip, the other end of the short sealing signal acquisition line, and the negative power supply. The flash oscillator reset pin stops oscillating due to the low level, causing the equipment alarm light to turn off and the flexible light-emitting strip to remain constantly lit. The flexible light-emitting strip, the main short sealing line, and the short sealing signal acquisition line are encapsulated together in a transparent flexible tube.

2. The electrical short-circuit test device with a prompting function according to claim 1, characterized in that: The flexible light-emitting strip is composed of linear organic light-emitting bodies forming voltage-activated light-emitting lines that extend along the length of the main short sealing line.

3. The electrical short-circuit test device with a prompting function according to claim 1, characterized in that: A miniature push-button switch K, a flashing oscillator, a power supply, a first transistor, a second transistor, a third transistor, and an equipment alarm light are encapsulated in a handle of a first short clip or a second short clip.

4. The electrical short-circuit test device with a prompting function according to claim 3, characterized in that: The short signal acquisition line extending from the first or second short sealing clip is at least partially enclosed in a transparent flexible tube, thus making the entire line a complete line segment in appearance.

5. The electrical short-circuit test device with a prompting function according to claim 1, characterized in that: The first short sealing clip and the second short sealing clip are covered with an insulating sheath.

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