Electrified display circuit for column switch

Abstract

The utility model relates to the technical field of pole-mounted switches, and discloses a live-line display circuit for a pole-mounted switch, which comprises a rectification energy storage circuit, a frequency regulation energy storage circuit, a voltage detection indicating circuit and a frequency regulation circuit, and is characterized in that the input end of the rectification energy storage circuit is connected with an external alternating current live-line signal; the output end of the rectification energy storage circuit is connected with the input end of the frequency adjustment energy storage circuit and the input end of the voltage detection indication circuit, and the output end of the frequency adjustment energy storage circuit is connected with the input end of the frequency adjustment circuit. The output end of the frequency regulation circuit is in feedback connection with the input end of the voltage detection indication circuit, and the output end of the voltage detection indication circuit is in feedback connection with the input end of the frequency regulation circuit; through reasonable design of the pole-mounted switch, a rectification energy storage circuit, a frequency regulation energy storage circuit, a voltage detection indication circuit and a frequency regulation circuit are adopted, so that whether the pole-mounted switch is electrified or not is displayed, and observation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pole switch, specifically relates to a live display circuit for pole switch. BACKGROUND

[0002] Pole is used to support electric wire. It appears in countryside, field, road and street, and is one of the important infrastructure in early China. Later, due to the development of steel and reinforced concrete, and the requirement of technology, the two materials replace most wooden poles, and the applicable wood is gradually scarce, so that wooden pole is hardly seen in city.

[0003] In order to guarantee the power safety of pole, pole switch is generally used as safety switch. Pole switch is a kind of safety switch used to guarantee the power safety of pole, and the main function is to isolate the high voltage of circuit. In the market, the general pole switch does not install live display, and the operation and maintenance personnel can only judge the live condition of pole switch equipment by checking the sampling data provided by the controller through pole, which brings great inconvenience to the work of operation and maintenance personnel. In addition, the pole switch equipment is in high altitude, and if the live display is installed, it can only be installed at the bottom of pole switch, and it is required to observe from a distance and from the ground in the case of outdoor sunlight, so that whether live or not can be clearly observed. According to the national standard of live display, the range of starting voltage of live indication is 15-40%Un, the flicker frequency of live indication light (flicker frequency when starting) is not less than 1Hz, etc.

[0004] Therefore, in view of the above problems, the live indication technology of existing pole switch needs to be further improved. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problems of no live display and long-distance observation of existing pole switch. Through the rational design of pole switch technology, the rectifier energy storage circuit, frequency regulation energy storage circuit, voltage detection indication circuit and frequency regulation circuit are adopted, so that whether live or not of pole switch can be effectively displayed and observed conveniently.

[0006] The technical scheme of the utility model is as follows:

[0007] A live display circuit for a pole-mounted switch, the display circuit comprising: a rectifier energy storage circuit, a frequency adjustment energy storage circuit, a voltage detection indication circuit and a frequency adjustment circuit, an input end of the rectifier energy storage circuit is connected with an external AC live signal, an output end of the rectifier energy storage circuit is connected with an input end of the frequency adjustment energy storage circuit and an input end of the voltage detection indication circuit respectively, an output end of the frequency adjustment energy storage circuit is connected with an input end of the frequency adjustment circuit, an output end of the frequency adjustment circuit is feedback connected with an input end of the voltage detection indication circuit, an output end of the voltage detection indication circuit is feedback connected with an input end of the frequency adjustment circuit;

[0008] The voltage detection indication circuit comprises a chip U10, a resistor R13, a resistor R49, a capacitor C7, a resistor R4, a resistor R28, a resistor R9, an NPN tube Q13, a resistor R26, a resistor R27, a PNP tube Q6, a resistor R14, an indicator lamp LED3, a resistor R41, a resistor R43, an NPN tube Q4, a resistor R39, the "Vin" terminal of the chip U10 is connected with one end of the capacitor C7, one end of the resistor R49 and one end of the resistor R13 in parallel, the other end of the capacitor C7 and the other end of the resistor R49 are grounded, the other end of the resistor R13 is connected with the output end of the rectifier energy storage circuit, the "Vout" terminal of the chip U10 is connected with one end of the resistor R4, the other end of the resistor R4 is connected with one end of the resistor R28 and the base of the NPN tube Q13 in parallel, the "GND" terminal of the chip U10 is grounded, the other end of the resistor R28 is connected with one end of the resistor R9, one end of the resistor R14, the collector of the PNP tube Q6 and one end of the R41 in parallel, the other end of the resistor R14 is connected with the anode of the indicator lamp LED3, the emitter of the NPN tube Q13, the other end of the resistor R9 and the cathode of the indicator lamp LED3 are grounded, the other end of the resistor R41 is connected with the resistor R43 and the base of the NPN tube Q4 in parallel, the other end of the resistor R43 and the emitter of the NPN tube Q4 are grounded, the collector of the NPN tube Q4 is connected with one end of the resistor R39, the other end of the resistor R39 is connected with the input end of the frequency adjustment energy storage circuit, the collector of the NPN tube Q13 is connected with one end of the resistor R27, the other end of the resistor R27 is connected with the base of the PNP tube Q6 and one end of the resistor R26 in parallel, the other end of the resistor R26 is connected with the emitter of the PNP tube Q6 and the other end of the resistor R13 in parallel.

[0009] Further, the chip U10 is a voltage detector.

[0010] Further, the rectifier energy storage circuit comprises a resistor R3, a rectifier D5 and a capacitor C9, one end of the resistor R3 is connected with the external alternating current charged signal, the other end of the resistor R3 is connected with the input end of the rectifier D5, the output end of the rectifier D5 is connected with one end of the capacitor C9, and the other end of the rectifier D5 and the other end of the capacitor C9 are grounded.

[0011] Further, the rectifier D5 is a double diode.

[0012] Further, the frequency adjustment energy storage circuit comprises a resistor R52 and a capacitor C12, one end of the resistor R52 is connected with the output end of the rectifier energy storage circuit, the other end of the resistor R52 is connected with one end of the capacitor C12 and the input end of the frequency adjustment circuit, and the other end of the capacitor C12 is grounded.

[0013] Further, the frequency adjustment circuit comprises a chip U4, a resistor R44, a resistor R46, a resistor R53, a resistor R40, a resistor R42, a resistor R47, a resistor R45, a resistor R55, an NPN tube Q5, a PNP tube Q3 and an NPN tube Q9, the "Vin" terminal of the chip U4 is connected in parallel with one end of the resistor R40 and the emitter of the PNP tube Q3, the other end of the resistor R40 is connected in parallel with one end of the resistor R42 and the base of the PNP tube Q3, the other end of the resistor R42 is connected with the collector of the NPN tube Q5, the "GND" terminal of the chip U4 is grounded, the "Vout" terminal of the chip U4 is connected with one end of the resistor R44, the other end of the resistor R44 is connected in parallel with the base of the NPN tube Q5 and one end of the resistor R46, the other end of the resistor R46 is connected in parallel with one end of the resistor R53, the collector of the PNP tube Q3 and one end of the resistor R47, the other end of the resistor R53 is grounded and the emitter of the NPN tube Q5 is grounded, the other end of the resistor R47 is connected in parallel with one end of the resistor R55 and the base of the NPN tube Q9, the other end of the resistor R55 is grounded and the emitter of the NPN tube Q9 is grounded, one end of the resistor R45 is connected with the collector of the NPN tube Q9, and the other end of the resistor R45 is connected with the input end of the voltage detection indicating circuit.

[0014] Further, the chip U4 is a voltage detector.

[0015] Further, the capacitor C12 is a tantalum capacitor.

[0016] Further, the capacitor C9 is a tantalum capacitor.

[0017] Further, the indicating lamp LED3 is a high-brightness LED lamp or a super-high-brightness LED lamp.

[0018] Beneficial effects

[0019] The utility model discloses a reasonable design to the technology of pole switch adopts rectifier energy storage circuit, frequency regulation energy storage circuit, voltage detection indicating circuit and frequency regulation circuit, can effectively realize whether pole switch live display and convenient observation etc. The display / indication mode is to adopt LED lamp, is used for outdoor long -range observation, also should be clear and visible, through the voltage of energy storage capacitor in the conventional live display circuit is improved, and super high bright emitting diode is adopted simultaneously, to realize super high bright live indication. Increase the flicker frequency regulation circuit when starting indication, realize the flicker frequency of LED lamp when starting is no less than 1Hz, satisfies the requirement of national standard. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a schematic diagram of the live display circuit for pole switch of the utility model.

[0021] Fig. 2 It is a circuit diagram of the live display circuit for pole switch of the utility model.

[0022] Reference numeral: 01, rectifier energy storage circuit, 02, frequency regulation energy storage circuit, 03, voltage detection indicating circuit, 04, frequency regulation circuit. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of the utility model.

[0024] Reference Figs. 1-2 As shown in the utility model provides a kind of live display circuit for pole switch, the display circuit includes: rectifier energy storage circuit 01, frequency regulation energy storage circuit 02, voltage detection indicating circuit 03 and frequency regulation circuit 04, the input end of rectifier energy storage circuit 01 is connected with external alternating current live signal, the output end of rectifier energy storage circuit 01 is connected with the input end of frequency regulation energy storage circuit 02 and the input end of voltage detection indicating circuit 03 respectively, the output end of frequency regulation energy storage circuit 02 is connected with the input end of frequency regulation circuit 04, the output end of frequency regulation circuit 04 is feedback connected with the input end of voltage detection indicating circuit 03, the output end of voltage detection indicating circuit 03 is feedback connected with the input end of frequency regulation circuit 04;

[0025] Wherein, the rectifier energy storage circuit 01 includes resistance R3, rectifier D5 and capacitor C9; frequency regulation energy storage circuit 02 includes resistance R52, capacitor C12; voltage detection indicating circuit 03 includes chip U10, resistance R13, resistance R49, capacitor C7, resistance R4, resistance R28, resistance R9, NPN tube Q13, resistance R26, resistance R27, PNP tube Q6, resistance R14, indicating lamp LED3, resistance R41, resistance R43, NPN tube Q4, resistance R39; Frequency regulation circuit 04 includes chip U4, resistance R44, resistance R46, resistance R53, resistance R40, resistance R42, resistance R47, resistance R45, resistance R55, NPN tube Q5, PNP tube Q3 and NPN tube Q9.

[0026] The rectifier energy storage circuit 01, one end of the resistor R3 is connected to the external AC charged signal, the other end of the resistor R3 is connected to the input end of the rectifier D5, the output end of the rectifier D5 is connected to one end of the capacitor C9, the other end of the rectifier D5 and the other end of the capacitor C9 are grounded. The resistor R52 of the frequency adjustment energy storage circuit 02 is connected to the output end of the rectifier energy storage circuit 01, the other end of the resistor R52 is connected to one end of the capacitor C12 and the input end of the frequency adjustment circuit 04, the other end of the capacitor C12 is grounded. The chip U10 "Vin" terminal of the voltage detection indicating circuit 03 is connected in parallel to one end of the capacitor C7, one end of the resistor R49 and one end of the resistor R13, the other end of the capacitor C7 and the other end of the resistor R49 are grounded, the other end of the resistor R13 is connected to the output end of the rectifier energy storage circuit 01, the chip U10 "Vout" terminal is connected to one end of the resistor R4, the other end of the resistor R4 is connected in parallel to one end of the resistor R28 and the base of the NPN tube Q13, the chip U10 "GND" terminal is grounded, the other end of the resistor R28 is connected in parallel to one end of the resistor R9, one end of the resistor R14, the collector of the PNP tube Q6 and one end of R41, the other end of the resistor R14 is connected to the positive electrode of the indicating lamp LED3, the emitter of the NPN tube Q13, the other end of the resistor R9 and the negative electrode of the indicating lamp LED3 are grounded, the other end of the resistor R41 is connected in parallel to the resistor R43 and the base of the NPN tube Q4, the other end of the resistor R43 and the emitter of the NPN tube Q4 are grounded, the collector of the NPN tube Q4 is connected to one end of the resistor R39, the other end of the resistor R39 is connected to the input end of the frequency adjustment energy storage circuit 02, the collector of the NPN tube Q13 is connected to one end of the resistor R27, the other end of the resistor R27 is connected in parallel to the base of the PNP tube Q6 and one end of the resistor R26, the other end of the resistor R26 is connected in parallel to the emitter of the PNP tube Q6 and the other end of the resistor R13. The chip U4 "Vin" terminal in the frequency adjustment circuit 04 is connected in parallel to one end of the resistor R40 and the emitter of the PNP tube Q3, the other end of the resistor R40 is connected in parallel to one end of the resistor R42 and the base of the PNP tube Q3, the other end of the resistor R42 is connected to the collector of the NPN tube Q5, the chip U4 "GND" terminal is grounded, the chip U4 "Vout" terminal is connected to one end of the resistor R44, the other end of the resistor R44 is connected in parallel to the base of the NPN tube Q5 and one end of the resistor R46, the other end of the resistor R46 is connected in parallel to one end of the resistor R53, the collector of the PNP tube Q3 and one end of the resistor R47, the other end of the resistor R53 and the emitter of the NPN tube Q5 are grounded, the other end of the resistor R47 is connected in parallel to one end of the resistor R55 and the base of the NPN tube Q9, the other end of the resistor R55 and the emitter of the NPN tube Q9 are grounded, the collector of the NPN tube Q9 is connected to one end of the resistor R45, the other end of the resistor R45 is connected to the input end of the voltage detection indicating circuit 03.

[0027] Among them, the chip U10 selects a voltage detector, the chip U4 selects a voltage detector; the capacitor C12 selects a tantalum capacitor, the capacitor C9 selects a tantalum capacitor; the indicator light LED3 selects a high-brightness LED light or an ultra-high-brightness LED light.

[0028] The specific implementation principle of this utility model is as follows: AC high voltage is connected in series with a high-voltage capacitor sensor to LIN. The LIN input current is in the uA range, charging capacitor C9. When the voltage reaches the threshold voltage of voltage detection chip U10, C9 discharges, driving LED3 to flash once. R13 and R49 form a voltage divider circuit to increase the voltage at the time of C9 discharge, causing LED3 to flash brightly. At low input current, the flashing frequency of LED3 is far below 1Hz, failing to meet the design requirement of a 1Hz flashing frequency at the start. A frequency adjustment circuit is added: while the input charges C9, it also charges C12 through R52. At low input current, U4 reaches the threshold voltage before U10. Simultaneously, C12 discharges, discharging C9 through Q9 and R45. By adjusting the parameters of R52 and C12, the flashing frequency of LED3 can be adjusted to 1Hz at the start. At high input current, U10 reaches the threshold voltage before U4. The discharge of C9 drives LED3 to flash brightly, while discharging C12 through Q4 and R39. After C9 and C12 are discharged synchronously, they start charging synchronously.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A charged display circuit for a pole switch, characterized in that: The display circuit includes: a rectifier tank circuit, a frequency regulation tank circuit, a voltage detection indication circuit and a frequency regulation circuit, wherein the input end of the rectifier tank circuit is connected to an external AC charged signal, the output end of the rectifier tank circuit is respectively connected to the input end of the frequency regulation tank circuit and the input end of the voltage detection indication circuit, the output end of the frequency regulation tank circuit is connected to the input end of the frequency regulation circuit, the output end of the frequency regulation circuit is fed back to the input end of the voltage detection indication circuit, and the output end of the voltage detection indication circuit is fed back to the input end of the frequency regulation circuit; Among them, the voltage detection indication circuit includes a chip U10, a resistor R13, a resistor R49, a capacitor C7, a resistor R4, a resistor R28, a resistor R9, an NPN tube Q13, a resistor R26, a resistor R27, a PNP tube Q6, a resistor R14, an indicator LED3, a resistor R41, a resistor R43, an NPN tube Q4, and a resistor R39. The "Vin" terminal of the chip U10 is connected in parallel to one end of the capacitor C7, one end of the resistor R49 and one end of the resistor R13. The other end of the capacitor C7 and the other end of the resistor R49 are grounded. The other end of the resistor R13 is connected to the output end of the rectifier energy storage circuit. The "Vout" terminal of the chip U10 is connected to one end of the resistor R4. The other end of the resistor R4 is connected in parallel to one end of the resistor R28 and the base of the NPN tube Q13. The "GND" terminal of the chip U10 is grounded. The other end of the resistor R28 is grounded. One end of the resistor R9, one end of the resistor R14, the collector of the PNP tube Q6, and one end of R41 are connected in series. The other end of the resistor R14 is connected to the positive electrode of the indicator LED3. The emitter of the NPN tube Q13, the other end of the resistor R9, and the negative electrode of the indicator LED3 are grounded in common. The other end of the resistor R41 is connected in parallel to the resistor R43 and the base of the NPN tube Q4. The other end of the resistor R43 and the emitter of the NPN tube Q4 are grounded in common. The collector of the NPN tube Q4 is connected to one end of the resistor R39. The other end of the resistor R39 is connected to the input end of the frequency adjustment energy storage circuit. The collector of the NPN tube Q13 is connected to one end of the resistor R27. The other end of the resistor R27 is connected in parallel to the base of the PNP tube Q6 and one end of the resistor R26. The other end of the resistor R26 is connected in parallel to the emitter of the PNP tube Q6 and the other end of the resistor R13.

2. A power display circuit for a pole-mounted switch according to claim 1, characterized in that: The chip U10 selects a voltage detector.

3. A power display circuit for a pole-mounted switch according to claim 1, characterized in that: The indicator light LED3 is selected to be a high-brightness LED light or an ultra-brightness LED light.

4. A power display circuit for a pole-mounted switch according to claim 1, characterized in that: The rectifier energy storage circuit includes a resistor R3, a rectifier D5 and a capacitor C9, one end of the resistor R3 is connected to an external AC charged signal, the other end of the resistor R3 is connected to the input end of the rectifier D5, the output end of the rectifier D5 is connected to one end of the capacitor C9, and the other end of the rectifier D5 and the other end of the capacitor C9 are grounded.

5. The power display circuit for a pole-mounted switch according to claim 1, characterized in that: The frequency adjustment energy storage circuit includes a resistor R52 and a capacitor C12. One end of the resistor R52 is connected to the output end of the rectifier energy storage circuit, the other end of the resistor R52 is connected to one end of the capacitor C12 and the input end of the frequency adjustment circuit, and the other end of the capacitor C12 is grounded.

6. The power display circuit for a pole-mounted switch according to claim 1, characterized in that: The frequency adjustment circuit includes a chip U4, a resistor R44, a resistor R46, a resistor R53, a resistor R40, a resistor R42, a resistor R47, a resistor R45, a resistor R55, an NPN tube Q5, a PNP tube Q3 and an NPN tube Q9. The "Vin" terminal of the chip U4 is connected in parallel to one end of the resistor R40 and the emitter of the PNP tube Q3. The other end of the resistor R40 is connected in parallel to one end of the resistor R42 and the base of the PNP tube Q3. The other end of the resistor R42 is connected to the collector of the NPN tube Q5. The "GND" terminal of the chip U4 is grounded. The "Vout" terminal of the chip U4 is connected to One end of the resistor R44, the other end of the resistor R44 is connected in parallel to the base of the NPN tube Q5 and one end of the resistor R46, the other end of the resistor R46 is connected in parallel to one end of the resistor R53, the collector of the PNP tube Q3 and one end of the resistor R47, the other end of the resistor R53 and the emitter of the NPN tube Q5 are grounded, the other end of the resistor R47 is connected in parallel to one end of the resistor R55 and the base of the NPN tube Q9, the other end of the resistor R55 and the emitter of the NPN tube Q9 are grounded, the collector of the NPN tube Q9 is connected to one end of the resistor R45, and the other end of the resistor R45 is connected to the input end of the voltage detection indication circuit.

7. A charged display circuit for a pole-mounted switch according to claim 6, characterized in that: The chip U4 selects a voltage detector.

8. The power display circuit for a pole-mounted switch according to claim 5, characterized in that: The capacitor C12 is a tantalum capacitor.

9. The power display circuit for a pole-mounted switch according to claim 4, characterized in that: The capacitor C9 is a tantalum capacitor.

Images