CN110572910A

CN110572910A - Automatic control device circuit of water leakage and electric shock preventing LED lamp

Info

Publication number: CN110572910A
Application number: CN201910889596.8A
Authority: CN
Inventors: 王金柱; 刘磊
Original assignee: Shandong Xu Cheng Lighting Technology Co Ltd
Current assignee: Shandong Xu Cheng Lighting Technology Co Ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2019-12-13

Abstract

The invention discloses an automatic control device circuit of a water leakage and electric shock preventing LED lamp, which comprises a main circuit with a silicon controlled rectifier T, an AC input module, a voltage reduction and rectification module, a filtering and voltage stabilization module, a signal probe, a signal processing module, a control output module and an LED load, wherein the AC input module, the voltage reduction and rectification module, the filtering and voltage stabilization module, the signal probe, the signal processing module, the control output module and the LED load are sequentially and electrically connected with the main circuit.

Description

Automatic control device circuit of water leakage and electric shock preventing LED lamp

Technical Field

The invention belongs to the technical field of intelligent control of LED lighting, and particularly relates to an automatic control device circuit of a water leakage and electric shock preventing LED lamp.

Background

Although the waterproof structure is made through various measures in the prior LED lamp, especially outdoor lighting, the waterproof performance is reduced if the waterproof structure is afraid of ensuring that water cannot enter the LED lamp completely, and particularly if the LED lamp is used for a long time, once water enters the LED lamp, electric leakage can be generated, so that electric shock is caused frequently, and lamps in many areas are not protected by grounding or are unreliable in grounding, thereby causing great electric shock safety accidents.

the existing lighting lamp occupies a large proportion of a non-isolation and linear scheme, if the lamp enters water, the lamp shell has electric leakage from 150V to 220V, the electric leakage voltage is more than the safety voltage by several times, and the personal safety is greatly damaged. And at present, the automatic intelligent control of each light is not realized, which brings great safety problems. There is a need to overcome and ameliorate this problem.

Disclosure of Invention

the invention aims at the problems and provides an automatic control device circuit of a water leakage and electric shock preventing LED lamp, which mainly adopts a signal probe to detect whether water enters a lamp body or not, a water inlet signal is processed by a comparator to output a control signal and cut off a power supply, so that the lamp is safe and reliable.

In order to achieve the technical purpose, the invention adopts an automatic control device circuit of the water leakage and electric shock prevention LED lamp, which comprises a main circuit with a silicon controlled rectifier T, and an AC input module, a voltage reduction and rectification module, a filtering and voltage stabilization module, a signal probe, a signal processing module, a control output module and an LED load which are sequentially and electrically connected with the main circuit.

As the improvement of the invention, waterproof glue coating layers are arranged on the AC input module 1, the voltage reduction and rectification module 2, the filtering and voltage stabilization module 3, the signal processing module 5 and the control output module 6.

As a further improvement of the invention, the signal probe 4 is partially exposed outside the whole circuit structure.

The invention mainly feeds back a water inlet signal to a signal processing module for signal processing after a signal probe detects the water inlet signal, the signal probe obtains a high level when no water exists, the high level signal is processed and a high level control signal is output, the control signal enables an optical coupler to be input and conducted, then a silicon controlled rectifier T is opened through the output of the optical coupler, and an LED load is electrified and lightened; if the signal probe has water, the signal probe processes the low level signal to output a low level control signal, and the control signal enables the input of the optical coupler to be switched off and then the optical coupler outputs a switch-off silicon controlled rectifier T to switch off the LED load to lose power and extinguish the LED load.

After the circuit structure is adopted, the invention has the following advantages:

1. The circuit structure of the invention can lead the lamp to have water leakage phenomenon, and the control system automatically cuts off the input of the load, thus leading the lamp to automatically realize the anti-leakage and anti-electric shock phenomenon;

2. the circuit structure of the invention can eliminate the water leakage phenomenon in the lamp and automatically recover the normal work of the lamp after the lamp is dried without any damage to the lamp;

3. The whole control system of the invention adopts an integrated design, is simple, convenient and reliable to use and has lower manufacturing cost;

4. The control device circuit of the invention can meet the requirements of lighting lamps in various lighting places such as highways, tunnels, parking lots, courtyards, corridors, advertisements and the like.

Drawings

FIG. 1 is a circuit configuration diagram of a first embodiment of the present invention;

fig. 2 is a circuit configuration diagram showing a second embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments, and in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to specific embodiments.

Example one

The operating principle of the first embodiment is as shown in fig. 1, after AC input mains voltage is reduced by a resistor-capacitor, a dc power supply is rectified by D1, a voltage regulator tube D2 and a capacitor C2 are stabilized at 12V to supply to the comparator U1, the signal probe 4 is a resistor of 10R (1M), and is exposed outside the whole system, which has the advantages of being capable of detecting whether water is introduced or not, when the probe 4 detects that water is absent, 1M is connected in parallel with R3(100K) to obtain a resistance value of 91K, if R2 is 68K, the comparator U1+ end is 12 × 91/(68+91) =6.868V, the comparator-end R4 and R5 are equal to obtain 24K which is 6V as a reference voltage, at this time, the + end 6.868V is greater than the reference voltage of 6V, the comparator output is high level Q1 is turned on, the input of U2 is turned on to turn on the electrically conductive output, and turn on the LED load thyristor lighting T, at this time, and the LED load lighting thyristor is turned on.

when the probe 4 detects that water exists, the + terminal voltage of the comparator is no longer 6.868V, the resistance value of the water is actually measured to be about 10 to 20, so that the probe R10 (1M) is connected with the water resistor (20K) and the R3 in parallel to obtain 16.39K, the + terminal voltage of the comparator is 12 x 16.39/(68+16.39) =2.33V, the voltage is lower than the reference voltage 6V, the output of the comparator is low-level Q1 is turned off, the input of the optical coupler U2 is turned off, the output of the optical coupler U is turned off, the thyristor T is turned off, and the.

Under the above state, because AC input module 1, step-down rectifier module 2, filtering voltage stabilizing module 3 and signal processing module 5, control output module 6 were done the rubber coating water repellent, silicon controlled rectifier T disconnection input commercial power L, N connects the zero line, so lamps and lanterns are uncharged, have realized the effect of safe protection against electric shock from this, after the drainage of leaking in the lamps and lanterns and drying, lamps and lanterns automatic recovery normal operating condition.

Example two

The working principle of the second embodiment is as shown in fig. 2, AC input mains voltage is rectified into a dc power supply by D1 after being subjected to resistance-capacitance voltage reduction, a voltage regulator tube D2 and a capacitor C2 are stabilized at 12V and supplied to a comparator U1 through a three-terminal regulator outputting 5V, the signal probe 4 is a resistor of 10R (1M) and is exposed for detecting whether water is fed or not, when the probe 4 detects that water is not fed, 1M and R3(100K) are connected in parallel to obtain a resistance value of 91K, if R2 takes 68K, the comparator U1+ end is 5/(91 +91) =2.86V, the comparator-ends R4 and R5 are equal, the reference voltage of 24K is 2.5V, at this time, the comparator output is high-level Q1 is conducted, the control electrode is conducted by negative conduction, the thyristor T is turned on, and at this time, the thyristor lighting of the LED load is obtained.

When the probe 4 detects that water exists, the + terminal voltage of the comparator is no longer 2.86V, the resistance value of the water is actually measured to be about 10 to 20, so that the probe R10 (1M) is connected with the water resistor (20K) and the R3 in parallel to obtain 16.39K, the + terminal voltage of the comparator is 5 x 16.39/(68+16.39) =0.97V, the voltage is lower than the reference voltage 2.5V, the output of the comparator is low-level Q1 is turned off, the thyristor control electrode is powered off, the thyristor T is turned off, and the LED load power-off lamp is turned off. In this state, because the AC input module 1, the voltage reduction and rectification module 2, the filtering and voltage stabilization module 3, the signal processing module 5 and the control output module 6 are subjected to gluing and waterproof treatment, the controllable silicon T is disconnected from the input commercial power L, and N is connected with a zero line, the lamp is uncharged, and the effect of safety and electric shock prevention is realized. When the water leakage in the lamp is discharged and dried, the lamp automatically restores to a normal working state.

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings in the description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without any inventive work.

Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and are not to be construed as limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions and substitutions can be made by those skilled in the art without departing from the spirit of the present invention and the scope of the present invention is also defined by the claims.

Claims

1. A circuit of an automatic control device of a water leakage and electric shock preventing LED lamp comprises a main circuit with a silicon controlled rectifier T, and an AC input module, a voltage reduction and rectification module, a filtering and voltage stabilization module, a signal probe, a signal processing module, a control output module and an LED load which are sequentially and electrically connected with the main circuit.

2. The circuit of claim 1, wherein the AC input module 1, the voltage-reducing rectifying module 2, the filtering and voltage-stabilizing module 3, the signal processing module 5, and the control output module 6 are all provided with waterproof glue layers.

3. The circuit of claim 1, wherein the signal probe 4 is partially exposed outside the whole circuit structure.