CN218100423U - Short-circuit alarm circuit of light-emitting diode - Google Patents
Short-circuit alarm circuit of light-emitting diode Download PDFInfo
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- CN218100423U CN218100423U CN202222326866.4U CN202222326866U CN218100423U CN 218100423 U CN218100423 U CN 218100423U CN 202222326866 U CN202222326866 U CN 202222326866U CN 218100423 U CN218100423 U CN 218100423U
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Abstract
The utility model discloses a light emitting diode short circuit warning circuit relates to the safety protection field, and this light emitting diode short circuit warning circuit includes: the voltage supply module is used for supplying alternating current voltage or direct current voltage to the load electricity utilization module; the load electricity utilization module is used for the load to obtain electricity for work; the short circuit detection module is used for detecting whether the load power utilization module is short-circuited or not and triggering the alarm protection module during short circuit; the alarm protection module is used for sounding an alarm and disconnecting a working loop of the voltage supply module and the load electricity utilization module simultaneously when the alarm protection module works; compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a short circuit detection module detects whether short circuit of load power consumption module, because short circuit and non-short circuit current difference are great, short circuit detection module passes through sampling current information, turns into voltage information, and is dual-purpose with emitting diode, when instructing the short circuit as emitting device, also as detecting device, detects whether short circuit.
Description
Technical Field
The utility model relates to a safety protection field specifically is a light emitting diode short circuit warning circuit.
Background
With the development of society, the use of electric appliances is not isolated in daily life, and when the electric appliances are abnormal, related alarm circuits are often needed to warn users. And a circuit for reporting the state of the machine or a dangerous condition to an operator in a visual display or audible alarm manner.
The existing alarm circuit is often provided with a light emitting diode, but the light emitting diode is only used for light emitting indication, is not fully utilized and needs to be improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a light emitting diode short circuit warning circuit to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a light emitting diode short circuit alarm circuit comprising:
the voltage supply module is used for supplying alternating current voltage or direct current voltage to the load electricity utilization module;
the load electricity utilization module is used for the load to obtain electricity for work;
the short circuit detection module is used for detecting whether the load power utilization module is short-circuited or not and triggering the alarm protection module when the load power utilization module is short-circuited;
the alarm protection module is used for sounding an alarm and disconnecting a working loop of the voltage supply module and the load electricity utilization module simultaneously when the alarm protection module works;
the voltage-stabilizing power supply module is used for supplying power to the alarm protection module;
the voltage supply module is connected with the load electricity utilization module, the load electricity utilization module is connected with the short circuit detection module, the short circuit detection module is connected with the alarm protection module, and the voltage stabilization power supply module is connected with the alarm protection module.
As a further aspect of the present invention: the load electricity utilization module comprises a switch S1 and a load X, one end of the switch S1 is connected with the voltage supply module, the other end of the switch S1 is connected with one end of the load X, the other end of the load X is grounded, and the switch S1 is in a normally-closed state.
As a further aspect of the present invention: short circuit detection module includes current transformer Y, diode D1, electric capacity C1, resistance R1, diode D2, electric capacity C2, resistance R2, diode D1's positive pole is connected to current transformer Y's one end, current transformer Y's other end ground connection, electric capacity C1's one end is connected to diode D1's negative pole, resistance R1's one end, diode D2's positive pole, electric capacity C1's other end ground connection, resistance R1's other end ground connection, electric capacity C2's one end is connected to diode D2's negative pole, resistance R2's one end, the warning protection module, electric capacity C2's other end ground connection, resistance R2's other end ground connection.
As the utility model discloses further scheme again: the alarm protection module comprises a triode V1, a triode V2, a loudspeaker SPEAKER, a relay J1 and a diode D3, wherein the base electrode of the triode V1 is connected with the control electrode of a silicon controlled rectifier Z1, the short-circuit detection module, the emitting electrode of the triode V1 is grounded, the negative electrode of the silicon controlled rectifier Z1 is grounded, the collecting electrode of the triode V1 is connected with one end of the loudspeaker SPEAKER, the other end of the loudspeaker SPEAKER is connected with a voltage-stabilizing power supply module, the positive electrode of the silicon controlled rectifier Z1 is connected with one end of the relay J1, the positive electrode of the diode D3, the other end of the relay J1 is connected with the negative electrode of the diode D3, and the voltage-stabilizing power supply module.
As a further aspect of the present invention: the voltage stabilizing power supply module comprises a resistor R4, a voltage stabilizer U1, a potentiometer RP1 and a resistor R3, wherein one end of the resistor R4 is connected with a power supply voltage VDD, the other end of the resistor R4 is connected with the input end of the voltage stabilizer U1, the grounding end of the voltage stabilizer U1 is connected with one end of the potentiometer RP1 and one end of the resistor R3, the other end of the potentiometer RP1 is grounded, and the output end of the voltage stabilizer U1 is connected with the other end of the resistor R3 and the alarm protection module.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a short circuit detection module detects whether short circuit of load power consumption module, because short circuit and non-short circuit current difference are great, short circuit detection module passes through sampling current information, turns into voltage information, and is dual-purpose with emitting diode, when instructing the short circuit as emitting device, also as detecting device, detects whether short circuit.
Drawings
Fig. 1 is a schematic diagram of a short-circuit alarm circuit of a light emitting diode.
Fig. 2 is a circuit diagram of a short-circuit alarm circuit of a light-emitting diode.
Fig. 3 is an internal structural view of the diode.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1, a short-circuit alarm circuit of a light emitting diode includes:
the voltage supply module is used for supplying alternating current voltage or direct current voltage to the load electricity utilization module;
the load electricity utilization module is used for the load to obtain electricity for work;
the short circuit detection module is used for detecting whether the load power utilization module is short-circuited or not and triggering the alarm protection module when the load power utilization module is short-circuited;
the alarm protection module is used for sounding an alarm and disconnecting a working loop of the voltage supply module and the load electricity utilization module simultaneously when the alarm protection module works;
the voltage-stabilizing power supply module is used for supplying power to the alarm protection module;
the voltage supply module is connected with the load electricity utilization module, the load electricity utilization module is connected with the short circuit detection module, the short circuit detection module is connected with the alarm protection module, and the voltage stabilizing power supply module is connected with the alarm protection module.
In this embodiment: referring to fig. 2, the load electricity utilization module includes a switch S1 and a load X, one end of the switch S1 is connected to the voltage supply module, the other end of the switch S1 is connected to one end of the load X, the other end of the load X is grounded, and the switch S1 is in a normally closed state.
The load X can be an alternating current electric appliance or a direct current electric appliance, when the load X is an alternating current electric appliance, the voltage supply module supplies alternating current VCC (AC), when the load X is a direct current electric appliance, the voltage supply module supplies direct current VCC (DC), wherein the switch S1 is normally closed, and the load X can work after being electrified. When the circuit is normal, the current flowing through the load X is normal; when the circuit is short-circuited, the current flowing through the load X increases.
In this embodiment: referring to fig. 2 and 3, the short circuit detection module includes a current transformer Y, a diode D1, a capacitor C1, a resistor R1, a diode D2, a capacitor C2, and a resistor R2, one end of the current transformer Y is connected to the anode of the diode D1, the other end of the current transformer Y is grounded, the cathode of the diode D1 is connected to one end of the capacitor C1, one end of the resistor R1, the anode of the diode D2, the other end of the capacitor C1 is grounded, the other end of the resistor R1 is grounded, the cathode of the diode D2 is connected to one end of the capacitor C2, one end of the resistor R2, the alarm protection module, the other end of the capacitor C2 is grounded, and the other end of the resistor R2 is grounded.
When the circuit is normal, the current transformer Y detects the current flowing through the load X, voltage signals are formed on the resistor R1 after the current is rectified by the diode D1 and filtered by the capacitor C1, and due to the fact that the light emitting diode D2 has voltage drop and different models, specific voltage drop values depend on doping materials and wavelengths selected by different manufacturers. At this time, the voltage on the resistor R1 is small, and cannot reach the initial light emitting voltage of the light emitting diode D2, and the light emitting diode D2 is not turned on; when the circuit is in short circuit, the voltage on the resistor R1 is larger at the moment, the light emitting diode D2 is conducted to emit light to prompt short circuit, and meanwhile, the alarm protection module is triggered through the light emitting diode D2. The diode is an electronic device made of semiconductor material (silicon, selenium, germanium, etc.), and is formed by packaging a PN junction, a corresponding electrode lead and a tube shell, and has unidirectional conductivity.
In this embodiment: referring to fig. 2, the alarm protection module includes a triode V1, a triode V2, a SPEAKER, a relay J1, and a diode D3, wherein a base of the triode V1 is connected to a control electrode of the thyristor Z1, the short circuit detection module, an emitter of the triode V1 is grounded, a cathode of the thyristor Z1 is grounded, the collector of triode V1 connects the one end of SPEAKER SPEAKER, and the other end of SPEAKER SPEAKER connects steady voltage power supply module, and the one end of relay J1, the positive pole of diode D3 are connected to the positive pole of silicon controlled rectifier Z1, and the negative pole of diode D3, steady voltage power supply module are connected to the other end of relay J1.
When receiving the trigger signal, the SPEAKER is ensured to be triggered to alarm through the amplification of the triode V1; meanwhile, the silicon controlled rectifier Z1 is triggered to be switched on, the relay J1 works by being electrified, the control switch S1 is switched off, and the load X is switched off a power supply line and does not work.
In this embodiment: referring to fig. 2, the voltage stabilizing power supply module includes a resistor R4, a voltage stabilizer U1, a potentiometer RP1, and a resistor R3, wherein one end of the resistor R4 is connected to the power supply voltage VDD, the other end of the resistor R4 is connected to the input end of the voltage stabilizer U1, the ground terminal of the voltage stabilizer U1 is connected to one end of the potentiometer RP1 and one end of the resistor R3, the other end of the potentiometer RP1 is grounded, and the output end of the voltage stabilizer U1 is connected to the other end of the resistor R3 and the alarm protection module.
The power supply voltage VDD supplies direct current to the voltage stabilizer U1 through the resistor R4, and provides proper working voltage for the alarm protection module after passing through the voltage stabilizer U1.
The utility model discloses a theory of operation is: the voltage supply module supplies alternating current voltage or direct current voltage to the load electricity utilization module, the load electricity utilization module is used for the load to obtain electricity to work, the short circuit detection module detects whether the load electricity utilization module is in short circuit or not, the alarm protection module is triggered during short circuit, the alarm protection module buzzes to alarm during working, meanwhile, a working loop of the voltage supply module and the working loop of the load electricity utilization module are disconnected, and the voltage stabilization power supply module supplies power for the alarm protection module.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A short-circuit alarm circuit of a light-emitting diode is characterized in that:
the short-circuit alarm circuit of the light-emitting diode comprises:
the voltage supply module is used for supplying alternating current voltage or direct current voltage to the load electricity utilization module;
the load electricity utilization module is used for the load to obtain electricity for work;
the short circuit detection module is used for detecting whether the load power utilization module is short-circuited or not and triggering the alarm protection module during short circuit;
the alarm protection module is used for sounding an alarm and disconnecting a working loop of the voltage supply module and the load electricity utilization module simultaneously when the alarm protection module works;
the voltage-stabilizing power supply module is used for supplying power to the alarm protection module;
the voltage supply module is connected with the load electricity utilization module, the load electricity utilization module is connected with the short circuit detection module, the short circuit detection module is connected with the alarm protection module, and the voltage stabilization power supply module is connected with the alarm protection module.
2. The LED short-circuit alarm circuit as claimed in claim 1, wherein the load power utilization module comprises a switch S1 and a load X, one end of the switch S1 is connected to the voltage supply module, the other end of the switch S1 is connected to one end of the load X, the other end of the load X is grounded, and the switch S1 is in a normally closed state.
3. The LED short-circuit alarm circuit according to claim 1, wherein the short-circuit detection module comprises a current transformer Y, a diode D1, a capacitor C1, a resistor R1, a diode D2, a capacitor C2 and a resistor R2, one end of the current transformer Y is connected with the anode of the diode D1, the other end of the current transformer Y is grounded, the cathode of the diode D1 is connected with one end of the capacitor C1, one end of the resistor R1 and the anode of the diode D2, the other end of the capacitor C1 is grounded, the other end of the resistor R1 is grounded, the cathode of the diode D2 is connected with one end of the capacitor C2, one end of the resistor R2 and the alarm protection module, the other end of the capacitor C2 is grounded, and the other end of the resistor R2 is grounded.
4. The short-circuit alarm circuit of claim 1, wherein the alarm protection module comprises a transistor V1, a transistor V2, a SPEAKER, a relay J1, and a diode D3, wherein the base of the transistor V1 is connected to the control electrode of the thyristor Z1, the short-circuit detection module, the emitter of the transistor V1 is grounded, the negative pole of silicon controlled rectifier Z1 is ground connection, and the collecting electrode of triode V1 connects the one end of SPEAKER SPEAKER, and the other end of SPEAKER SPEAKER connects steady voltage power supply module, and the one end of relay J1, the positive pole of diode D3 are connected to the positive pole of silicon controlled rectifier Z1, and the negative pole of diode D3, steady voltage power supply module are connected to the other end of relay J1.
5. The LED short-circuit alarm circuit according to claim 4, wherein the voltage-stabilizing power supply module comprises a resistor R4, a voltage regulator U1, a potentiometer RP1 and a resistor R3, one end of the resistor R4 is connected with the supply voltage VDD, the other end of the resistor R4 is connected with the input end of the voltage regulator U1, the ground terminal of the voltage regulator U1 is connected with one end of the potentiometer RP1 and one end of the resistor R3, the other end of the potentiometer RP1 is grounded, and the output end of the voltage regulator U1 is connected with the other end of the resistor R3 and the alarm protection module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222326866.4U CN218100423U (en) | 2022-08-31 | 2022-08-31 | Short-circuit alarm circuit of light-emitting diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222326866.4U CN218100423U (en) | 2022-08-31 | 2022-08-31 | Short-circuit alarm circuit of light-emitting diode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218100423U true CN218100423U (en) | 2022-12-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222326866.4U Active CN218100423U (en) | 2022-08-31 | 2022-08-31 | Short-circuit alarm circuit of light-emitting diode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218100423U (en) |
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2022
- 2022-08-31 CN CN202222326866.4U patent/CN218100423U/en active Active
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