CN210294479U - Intelligent switch detection circuit - Google Patents
Intelligent switch detection circuit Download PDFInfo
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- CN210294479U CN210294479U CN201920970493.XU CN201920970493U CN210294479U CN 210294479 U CN210294479 U CN 210294479U CN 201920970493 U CN201920970493 U CN 201920970493U CN 210294479 U CN210294479 U CN 210294479U
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Abstract
The utility model relates to the technical field of switching power supplies, and discloses an intelligent switch detection circuit with voltage detection, which comprises a sampling circuit, a controller and a light emitting diode, wherein the sampling circuit comprises a sampling resistor and a triode; one end of the sampling resistor is connected with a power supply end and used for detecting a voltage signal of the circuit, and the other end of the sampling resistor is coupled to a base electrode of the triode and inputs the voltage signal into the triode; the collector of the triode is coupled with the control end of the controller, and the emitter of the triode is coupled with the reset end of the controller; the output end of the controller is coupled with the anode of the light-emitting diode, and the cathode of the light-emitting diode is connected with the cathode of the power supply; if the voltage signal is lower than or higher than a preset signal of the controller, the controller outputs a high level, and the high level is used for driving the light emitting diode to be conducted.
Description
Technical Field
The utility model relates to a switching power supply technical field, more specifically say, relate to an intelligence switch detection circuitry.
Background
Switches are commonly used electrical components for controlling the on/off of electrical circuits in the home or industry. In the past, a circuit breaker or an air switch in a circuit is used as a protection device of a current transmission path, and when the voltage of the circuit is too high, the circuit breaker or the air switch cannot be timely disconnected, so that electrical equipment is easily burnt out.
Therefore, a switch with better sensitivity is provided in the prior art, and the problem of the peak value of the voltage can be effectively solved. However, when the voltage of the circuit is lower than the normal voltage, the existing switch is not disconnected, and the electrical equipment is aged after the existing switch is used for a long time.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an intelligent switch detection circuitry that possesses voltage detection.
The utility model provides a technical scheme that its technical problem adopted is: an intelligent switch detection circuit comprises a sampling circuit, a controller and a light emitting diode; the sampling circuit comprises a sampling resistor and a triode,
one end of the sampling resistor is connected with a power supply end and used for detecting a voltage signal of a circuit, and the other end of the sampling resistor is coupled to a base electrode of the triode and inputs the voltage signal into the triode;
the collector of the triode is coupled to the control end of the controller, and the emitter of the triode is coupled to the reset end of the controller;
the output end of the controller is coupled to the anode of the light-emitting diode, and the cathode of the light-emitting diode is connected with the cathode of the power supply;
if the voltage signal is lower than or higher than a preset signal of the controller, the controller outputs a high level, and the high level is used for driving the light emitting diode to be conducted.
Optionally, the sampling circuit includes a first sampling resistor and a second sampling resistor, and the transistor includes a first transistor and a third transistor;
one end of the first sampling resistor is connected with a power supply end, the other end of the first sampling resistor is coupled to a base electrode of the first triode, a collector electrode of the first triode is coupled to a first control end of the controller, and an emitter electrode of the first triode is coupled to a reset end of the controller;
one end of the second sampling resistor is connected with a power supply end, the other end of the second sampling resistor is coupled to a base electrode of the third triode, a collector electrode of the third triode is coupled to a second control end of the controller, and an emitter electrode of the third triode is coupled to a reset end of the controller.
Optionally, the device further comprises a first adjustable resistor, a second adjustable resistor, a first voltage regulator tube and a second voltage regulator tube,
the cathode of the first voltage-regulator tube is coupled to the sliding end of the first adjustable resistor, and the anode of the first voltage-regulator tube is connected with the base electrode of the first triode;
the cathode of the second voltage-regulator tube is coupled to the sliding end of the second adjustable resistor, and the anode of the second voltage-regulator tube is coupled to the base of the third triode;
one end of the first adjustable resistor is connected with one end of the first sampling resistor, and the other end of the first adjustable resistor is coupled to the negative electrode of the power supply;
one end of the second adjustable resistor is connected with one end of the second sampling resistor, and the other end of the second adjustable resistor is coupled to the negative electrode of the power supply.
Optionally, the controller further comprises a first diode, a second diode and a second triode, wherein an anode of the first diode is connected to a collector of the second triode, a cathode of the first diode is coupled to the first control terminal of the controller, an anode of the second diode is connected to a collector of the third triode, and a cathode of the second diode is coupled to the second control terminal of the controller.
Optionally, the integrated circuit further includes a second capacitor, one end of the second capacitor is connected to a level end of the controller, and the other end of the second capacitor is coupled to a reset end of the controller.
Optionally, the power supply further comprises a fourth resistor, one end of the fourth resistor is commonly connected with one end of the second capacitor and the reset end of the controller, and the other end of the fourth resistor is connected with the negative electrode of the power supply.
Optionally, the power supply further comprises a rectifier bridge and a first capacitor, wherein positive and negative input ends of the rectifier bridge are respectively connected with positive and negative ends of the power supply, and two ends of the first capacitor are respectively connected with an output end of the rectifier bridge.
The utility model discloses an among the intelligence switch detection circuitry, including sampling circuit, controller and emitting diode, sampling circuit includes sampling resistor and triode, and sampling resistor is used for the voltage signal of detection circuitry, and the other end of sampling resistor is coupled in the base of triode to with voltage signal input triode; the collector of the triode is coupled to the control end of the controller, if the voltage signal is lower than or higher than a preset signal of the controller, the controller inputs a high level to the alarm circuit, and the high level is used for driving the alarm circuit to output an alarm signal. Compared with the prior art, the utility model discloses an intelligence switch detection circuitry when voltage is less than the predetermined value, output alarm information, the user can in time cut off power to avoid electrical equipment to operate for a long time at low pressure state, damage electrical equipment.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a partial circuit diagram of an intelligent switch detection circuit.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a partial circuit diagram of an intelligent switch detection circuit. As shown in fig. 1, the intelligent switch detection circuit mainly includes a sampling circuit, a controller IC and a light emitting diode. The controller IC has functions of processing and controlling signals, and is a core element of the circuit. Wherein the controller IC has 6 terminals: 2 output terminals and 4 control terminals. The 2 output terminals are the first output terminal Q1 and the second output terminal Q2, respectively, and the 4 control terminals are the reset terminal R, the first control terminal S, the second control terminal CP and the level terminal D, respectively.
Specifically, the light emitting diodes include a first light emitting diode LED1 and a second light emitting diode LED 2. The sampling circuit comprises a first sampling resistor R1 and a second sampling resistor R5, wherein the sampling resistors have the function of detecting circuit voltage signals.
The transistors include a first transistor Q1 and a third transistor Q3, which are NPN transistors having switching and amplifying functions.
One end of the first sampling resistor R1 and one end of the second sampling resistor R5 are connected to a power supply terminal for detecting a voltage signal of the circuit, and the other end of the first sampling resistor R1 is coupled to a base of the first transistor Q1 and inputs the voltage signal into the first transistor Q1.
The collector of the first transistor Q1 is coupled to the first control terminal S of the controller IC, the emitter of the first transistor Q1 is coupled to the reset terminal R of the controller IC, one path of the voltage signal detected by the first sampling resistor R1 is input to the first control terminal S of the controller IC through the base of the first transistor Q1, and the other path is input to the reset terminal R of the controller IC, and level signals are input to the first control terminal S and the reset terminal R of the controller IC.
The first output terminal Q1 of the controller IC is coupled to the anode of the first light emitting diode LED1, and the cathode of the first light emitting diode LED1 is connected to the cathode of the power supply to form a loop with the voltage signal inputted by the controller IC.
If the voltage signal is lower than the preset signal of the controller IC, the controller IC inputs a high level to the first light emitting diode LED1 to drive the first light emitting diode LED1 to be turned on.
Specifically, when the circuit voltage is lower than the voltage preset by the controller IC, for example: and when the voltage is lower than 195V, when the first sampling resistor R1 is input to the first control terminal S of the controller IC and the input reset terminal R is at a low level (because the input control terminal S and the reset terminal R cannot be at a high level at the same time), the first output terminal Q1 of the controller IC outputs a high level, and the high level is used for triggering the first light emitting diode LED1, so that the first light emitting diode LED1 is turned on and blinks to send out an alarm signal.
Furthermore, one end of the second sampling resistor R5 is connected to a power source terminal for detecting a voltage signal of the circuit, and the other end of the second sampling resistor R5 is coupled to the base of the third transistor Q3 for inputting the voltage signal into the third transistor Q3.
The collector of the third transistor Q3 is coupled to the second control end CP of the controller IC, the emitter of the third transistor Q3 is coupled to the reset end R of the controller IC, and the voltage signal detected by the second sampling resistor R5 is input to the second control end CP of the controller IC through the base of the third transistor Q3 in one path, and is input to the reset end R of the controller IC in the other path, so as to input level signals to the second control end CP and the reset end R of the controller IC.
The second output terminal Q2 of the controller IC is coupled to the anode of the second light emitting diode LED2, and the cathode of the second light emitting diode LED2 is connected to the negative terminal of the circuit, forming a loop with the voltage signal inputted by the controller IC.
If the voltage signal is higher than the preset signal of the controller IC, the controller IC inputs a high level to the second light emitting diode LED2 to drive the second light emitting diode LED2 to be turned on.
Specifically, when the circuit voltage is lower than the voltage preset by the controller IC, for example: and when the voltage is higher than 240V, the input reset terminal R is at a low level when the second control terminal CP of the second sampling resistor R5 input controller IC is at a low level, and when the output terminal Q2 has a pulse rising edge at the second control terminal CP, Q2 is D, that is, if D is 1, Q2 is also at 1 (i.e., a high level), the second output terminal Q2 of the controller IC outputs a high level, and the high level is used for triggering the second light emitting diode LED2, so that the second light emitting diode LED2 is turned on and flickers to send an alarm signal.
In this embodiment, in order to improve the stability of the circuit, a first regulator VS1, a second regulator VS2, a first adjustable resistor R2, and a second adjustable resistor R6 may be provided in the circuit. Specifically, the first regulator tube VS1 and the second regulator tube VS2 have a voltage stabilizing function, and the first adjustable resistor R2 and the second adjustable resistor R6 are used for adjusting the voltage value input by the sampling resistor.
Further, the cathode of the first regulator VS1 is coupled to the sliding end of the first adjustable resistor R2, the anode of the first regulator VS1 is connected to the base of the first transistor Q1,
the cathode of the second regulator tube VS2 is coupled to the sliding end of the second adjustable resistor R6, and the anode of the second regulator tube VS2 is coupled to the base of the third transistor Q3.
Wherein, one end of the first adjustable resistor R2 is connected with one end of the first sampling resistor R1, the other end of the first adjustable resistor R2 is coupled with the negative pole of the power supply, the sliding end of the first adjustable resistor R2 is connected with the base of the first triode Q1,
one end of a second adjustable resistor R6 is connected with one end of a second sampling resistor R5, the other end of the second adjustable resistor R6 is coupled with the negative electrode of the power supply, the sliding end of the second adjustable resistor R6 is connected with the base electrode of the third triode Q3, after the signal passes through the adjustable resistors (R2 and R6), one path of the signal is input into the base electrodes of the first triode Q1 and the third triode Q3 and is used as the driving signal of the first triode Q1 and the third triode Q3, and the other path of the signal passes through the reset end R of the controller IC and is compared with the preset signal of the controller IC.
In this embodiment, in order to improve the stability of the voltage, the transformer Tr1, the rectifier bridge D1, and the first capacitor C1 may be provided in the circuit. Specifically, the primary windings of the transformer Tr1 are respectively connected to the mains supply, the two ends of the secondary winding of the transformer Tr1 are connected to the positive and negative input ends of the rectifier bridge D1, and the input alternating current is rectified by the rectifier bridge D1 to be converted into direct current.
The first capacitor C1 has a filtering function, and two ends of the first capacitor C1 are respectively connected to the output end of the rectifier bridge D1, so as to convert the dc power output by the rectifier bridge D1 into a smoother voltage, and output the smoother dc power to the subsequent circuit.
In this embodiment, in order to further improve the performance of the circuit, the first diode VD1, the second diode VD2, and the second transistor Q2 may be provided in the circuit. Specifically, the second transistor Q2 has a switching function. An anode of the first diode VD1 is connected to a collector of the second transistor Q2, a cathode of the first diode VD1 is coupled to the first control terminal S of the controller IC, an anode of the second diode VD2 is connected to a collector of the third transistor Q3, a cathode of the second diode VD2 is coupled to the second control terminal CP of the controller IC, and sampling signals input by the sampling resistors (R1, R5) are respectively input to the first control terminal S and the second control terminal CP of the controller IC after passing through the first diode VD1 and the second diode VD 2.
In this embodiment, in order to further improve the performance of the circuit, a first resistor R3, a second resistor R4, a third resistor R7, a second capacitor C2, and a fourth resistor R8 may be provided in the circuit. Specifically, the first resistor R3, the second resistor R4, and the third resistor R7 are pull-up resistors, specifically: the pull-up is to clamp the uncertain signal at high level through a resistor, and the resistor plays a role of current limiting at the same time.
One end of the first resistor R3 is connected to the positive electrode of the rectifier bridge D1, and the other end of the first resistor R3 is commonly connected to the collector of the first transistor Q1 and the base of the second transistor Q2.
One end of the second resistor R4 is coupled to the anode of the rectifier bridge D1, and the other end of the second resistor R4 is commonly connected to the collector of the second transistor Q2 and the anode of the first diode VD 1.
One end of the third resistor R7 is commonly connected to one end of the second capacitor C2 and one end of the second resistor R4, and the other end of the third resistor R7 is commonly connected to the collector of the third transistor Q3 and the anode of the second diode VD 2.
The other end of the second capacitor C2 is commonly connected with one end of the fourth resistor R8 and the reset end R of the controller IC, and the other end of the fourth resistor R8 is connected with the negative electrode of the rectifier bridge D1.
In this embodiment, in order to improve the safety of the light emitting diode, a fifth resistor R9 and a sixth resistor R10 may be provided in the circuit. Specifically, the fifth resistor R9 and the sixth resistor R10 have a current limiting function. One end of the fifth resistor R9 is connected to the first output terminal Q1 of the controller IC, the other end of the fifth resistor R9 is coupled to the anode of the first LED1, and the cathode of the first LED1 is connected to the cathode of the power supply, forming a loop.
One end of the sixth resistor R10 is connected to the second output terminal Q2 of the controller IC, the other end of the sixth resistor R10 is coupled to the anode of the second LED2, and the cathode of the second LED2 is connected to the cathode of the power supply, forming a loop.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (7)
1. An intelligent switch detection circuit is characterized by comprising a sampling circuit, a controller and a light emitting diode, wherein the sampling circuit comprises a sampling resistor and a triode;
one end of the sampling resistor is connected with a power supply end and used for detecting a voltage signal of a circuit, and the other end of the sampling resistor is coupled to a base electrode of the triode and inputs the voltage signal into the triode;
the collector of the triode is coupled to the control end of the controller, and the emitter of the triode is coupled to the reset end of the controller;
the output end of the controller is coupled to the anode of the light-emitting diode, and the cathode of the light-emitting diode is connected with the cathode of the power supply;
if the voltage signal is lower than or higher than a preset signal of the controller, the controller outputs a high level, and the high level is used for driving the light emitting diode to be conducted.
2. The intelligent switch detection circuit of claim 1,
the sampling circuit comprises a first sampling resistor and a second sampling resistor, and the triode comprises a first triode and a third triode;
one end of the first sampling resistor is connected with a power supply end, the other end of the first sampling resistor is coupled to a base electrode of the first triode, a collector electrode of the first triode is coupled to a first control end of the controller, and an emitter electrode of the first triode is coupled to a reset end of the controller;
one end of the second sampling resistor is connected with a power supply end, the other end of the second sampling resistor is coupled to a base electrode of the third triode, a collector electrode of the third triode is coupled to a second control end of the controller, and an emitter electrode of the third triode is coupled to a reset end of the controller.
3. The intelligent switch detection circuit of claim 2,
also comprises a first adjustable resistor, a second adjustable resistor, a first voltage-stabilizing tube and a second voltage-stabilizing tube,
the cathode of the first voltage-regulator tube is coupled to the sliding end of the first adjustable resistor, and the anode of the first voltage-regulator tube is connected with the base electrode of the first triode;
the cathode of the second voltage-regulator tube is coupled to the sliding end of the second adjustable resistor, and the anode of the second voltage-regulator tube is coupled to the base of the third triode;
one end of the first adjustable resistor is connected with one end of the first sampling resistor, and the other end of the first adjustable resistor is coupled to the negative electrode of the power supply;
one end of the second adjustable resistor is connected with one end of the second sampling resistor, and the other end of the second adjustable resistor is coupled to the negative electrode of the power supply.
4. The intelligent switch detection circuit of claim 2,
the controller further comprises a first diode, a second diode and a second triode, wherein the anode of the first diode is connected with the collector of the second triode, the cathode of the first diode is coupled to the first control end of the controller, the anode of the second diode is connected with the collector of the third triode, and the cathode of the second diode is coupled to the second control end of the controller.
5. The intelligent switch detection circuit according to claim 1, further comprising a second capacitor, wherein one end of the second capacitor is connected to the level terminal of the controller, and the other end of the second capacitor is coupled to the reset terminal of the controller.
6. The intelligent switch detection circuit according to claim 5, further comprising a fourth resistor, wherein one end of the fourth resistor is commonly connected to one end of the second capacitor and the reset terminal of the controller, and the other end of the fourth resistor is connected to a negative electrode of a power supply.
7. The intelligent switch detection circuit according to any one of claims 1 to 6, further comprising a rectifier bridge and a first capacitor, wherein positive and negative input terminals of the rectifier bridge are respectively connected to positive and negative ends of a power supply, and two ends of the first capacitor are respectively connected to an output terminal of the rectifier bridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920970493.XU CN210294479U (en) | 2019-06-24 | 2019-06-24 | Intelligent switch detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920970493.XU CN210294479U (en) | 2019-06-24 | 2019-06-24 | Intelligent switch detection circuit |
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| Publication Number | Publication Date |
|---|---|
| CN210294479U true CN210294479U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920970493.XU Active CN210294479U (en) | 2019-06-24 | 2019-06-24 | Intelligent switch detection circuit |
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| CN (1) | CN210294479U (en) |
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- 2019-06-24 CN CN201920970493.XU patent/CN210294479U/en active Active
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