CN218416749U

CN218416749U - Control circuit of light-operated automatic switch

Info

Publication number: CN218416749U
Application number: CN202222449281.1U
Authority: CN
Inventors: 陈汉湘
Original assignee: Yueqing Ruiyang Electronics Co ltd
Current assignee: Yueqing Ruiyang Electronics Co ltd
Priority date: 2022-09-13
Filing date: 2022-09-13
Publication date: 2023-01-31
Anticipated expiration: 2032-09-13

Abstract

The utility model provides a control circuit of a light-operated automatic switch, which comprises a filtering and rectifying module, a first filtering and voltage-stabilizing module electrically connected with the filtering and rectifying module, a relay and a driving module electrically connected with the first filtering and voltage-stabilizing module, a second filtering and voltage-stabilizing module electrically connected with the relay and the driving module, and a relay on-off control module which is respectively electrically connected with the relay and the driving module as well as the second filtering and voltage-stabilizing module, is used for outputting a corresponding control signal according to the detected brightness and controlling the power on-off of a LAMP to be controlled through the relay and the driving module; the relay on-off control module comprises an infrared sensor, a photoresistor and a single chip microcomputer. The utility model discloses a set up the structure setting of two light sensitive elements and cooperation singlechip, can effectively solve among the prior art only adopt a light-operated automatic switch's of light sensitive element control circuit and easily make controlled lamps and lanterns relapse the switching and cause the unstable technical problem that damages even of illumination.

Description

Control circuit of light-operated automatic switch

Technical Field

The utility model relates to a switch technical field, concretely relates to light-operated automatic switch's control circuit.

Background

For saving electricity and manpower, lamps such as street lamps, projection lamps, outdoor advertising lamps, square illuminating lamps and the like are generally provided with a light-operated automatic switch which automatically controls the lamps to be turned on and off according to the illumination intensity, and the light-operated automatic switch controls the on-off of a power supply of the lamps through a control circuit so as to realize the function of automatically switching the lamps on and off according to the illumination intensity. At present, a control circuit of the light-operated automatic switch generally adopts a single photoelectric conversion element to detect the ambient illumination intensity (brightness) and correspondingly controls a lamp through the control circuit. The control circuit commonly used for the existing LAMP control switch is shown in fig. 1 and mainly comprises a filtering rectification module, a filtering voltage stabilizing module, a relay and a driving module thereof, a relay on-off control module and the like, wherein a photosensitive resistor RM is adopted in the relay on-off control module to detect the change of the ambient illumination intensity, and the on-off control circuit correspondingly controls the on-off of the LAMP LAMP by controlling the on-off of the circuit breaker J1 by utilizing the characteristics that the photosensitive resistor RM has the resistance value which becomes smaller when the illumination intensity becomes larger and the resistance value becomes larger when the illumination intensity becomes smaller. The LAMP LAMP has the problems that the ambient brightness of the LAMP LAMP is improved after the LAMP LAMP is turned on, part of light emitted by the LAMP LAMP can shine back to the photoresistor RM, so that when the ambient brightness added with LAMP LAMP shining back reaches the LAMP turning-off brightness, the LAMP LAMP can be automatically turned off by the control circuit, the LAMP LAMP is repeatedly turned on/off, the LAMP LAMP is unstable in illumination and even damaged, and particularly when the LAMP is installed in a place with large light reflection, the LAMP cannot normally work under the control of the control circuit of the existing light-operated automatic switch similar to that shown in the figure 1.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the control circuit of the light-operated automatic switch with the improved structure is provided to solve the technical problem that the existing control circuit of the light-operated automatic switch is easy to cause unstable illumination and even damage due to repeated opening and closing of a controlled lamp.

The technical scheme of the utility model is that: the utility model discloses a control circuit of light-operated automatic switch, include the alternating current that converts the input to direct current filtering rectifier module, the first filtering voltage stabilizing module of being connected with above-mentioned filtering rectifier module electricity, the relay and the drive module of being connected with above-mentioned first filtering voltage stabilizing module electricity, the second filtering voltage stabilizing module of being connected with above-mentioned relay and drive module electricity, its structural feature is: the LAMP control system also comprises a relay on-off control module which is respectively electrically connected with the relay, the driving module of the relay and the second filtering voltage stabilizing module and is used for outputting corresponding control signals according to the detected light brightness and controlling the on-off of the power supply of the LAMP to be controlled through the relay and the driving module of the relay; the relay on-off control module comprises an infrared sensor D6, a photoresistor RM, a resistor R3, a resistor R4 and a singlechip U1, the singlechip U1 is provided with a power supply pin, a grounding pin, a first signal input pin, a second signal input pin and a control signal output pin, the control signal output pin of the singlechip U1 is electrically connected with the relay and a driving module thereof, a common contact point of each end of the infrared sensor D6 and the photoresistor RM and the power supply pin of the singlechip U1 is electrically connected with a second filtering voltage stabilizing module, a common contact point of each other end of the infrared sensor D6, one end of the resistor R3 and the first signal input pin of the singlechip U1 is provided with the other end of the photoresistor RM, one end of the resistor R4 and the second signal input pin of the singlechip U1, and the other ends of the resistor R3 and the resistor R4 and the grounding pin of the singlechip U1 are grounded, namely connected with GND.

The further scheme is as follows: the photoresistor RM is replaced by a photodiode or a phototriode.

The further scheme is as follows: the single chip microcomputer U1 is an ATtiny13 type single chip microcomputer with No. 1-8 functional pins, and the power supply pin and the grounding pin of the single chip microcomputer U1 are No. 8 pin and No. 4 pin correspondingly; the first signal input pin and the second signal input pin of the singlechip U1 are the pins No. 2 and No. 3 correspondingly, and the control signal output pin of the singlechip U1 is the pin No. 6.

The further scheme is as follows: the filtering and rectifying module comprises a resistor R1, a resistor R2, a capacitor C1 and a rectifying bridge DB, wherein each end of the resistor R1, the resistor R2 and the capacitor C1 is provided with a common joint, each other end of the resistor R2 and the capacitor C1 and one alternating current input end of the rectifying bridge DB are provided with a common joint, when the filtering and rectifying module is used, the other end of the resistor R1 is electrically connected with a live wire L of a circuit installed by the controlled LAMP LAMP, and the other alternating current input end of the rectifying bridge DB is electrically connected with a zero wire N of the circuit installed by the controlled LAMP LAMP; and the negative electrode of the direct current output end of the rectifier bridge DB is grounded.

The further scheme is as follows: the first filtering and voltage stabilizing module comprises an electrolytic capacitor C2 and a voltage stabilizing diode DW1, the anode of the electrolytic capacitor C2 and the cathode of the voltage stabilizing diode DW1 are connected in parallel and are electrically connected with the anode of the direct current output end of the rectifier bridge DB of the filtering and rectifying module, and the cathode of the electrolytic capacitor C2 and the anode of the voltage stabilizing diode DW1 are grounded.

The further scheme is as follows: the relay and the driving module thereof comprise a relay J1, a triode Q1, a diode D5 and a resistor R5, wherein one end of a coil of the relay J1 and the negative electrode of the diode D5 are in common connection with the negative electrode of a voltage stabilizing diode DW1 of the first filtering and voltage stabilizing module, the other end of the coil of the relay J1, the positive electrode of the diode D5 and the collector electrode of the triode Q1 are in common connection, the base electrode of the triode Q1 is electrically connected with one end of the resistor R5, the emitter of the triode Q1 is grounded, the moving contact of the relay J1 is electrically connected with a live wire L of a circuit installed by the controlled LAMP LAMP, the normally open fixed contact of the relay J1 is electrically connected with one power end of the controlled LAMP LAMP, and the other power end of the controlled LAMP LAMP is electrically connected with a zero wire N of the circuit installed by the controlled LAMP LAMP.

The further scheme is as follows: the second filtering and voltage stabilizing module comprises a resistor R6, an electrolytic capacitor C3 and a voltage stabilizing diode DW2, one end of the resistor R6 and the cathode of a diode D5 of the relay and the driving module thereof are provided with a common contact, the other end of the resistor R6, the anode of the electrolytic capacitor C3 and the cathode of the voltage stabilizing diode DW2 are provided with a common contact, and the cathode of the electrolytic capacitor C3 and the anode of the voltage stabilizing diode DW2 are grounded.

The further scheme is as follows: the control signal output pin of the singlechip U1 of the relay on-off control module is electrically connected with the other end of the resistor R5 of the relay and the drive module thereof, and a common contact point of each end of the infrared sensor D6 and the photoresistor RM and a common contact point of a power supply pin of the singlechip U1 and a cathode of the voltage stabilizing diode DW2 of the second filtering voltage stabilizing module are provided with a common contact point.

The utility model discloses has positive effect: (1) The utility model discloses a set up infrared ray sensor to containing infrared ray's natural light sensitivity and be used for the bright photo resistance of testing environment, and utilize two way real-time voltage signal of singlechip sampling and compare with built-in threshold value, singlechip U1 just can make controlled lamps and lanterns light on and extinguish through the relay when only two way voltage signal satisfy the condition of turning on the light or turning off the light simultaneously, thereby can effectively solve among the prior art and only adopt a light-sensitive element's light-operated automatic switch's control circuit easily make controlled lamps and lanterns relapse the switching and cause the unstable technical problem that damages even of illumination. (2) The utility model discloses because the setting can conveniently be adjusted according to particular case to the built-in first and second voltage comparison threshold value of singlechip, also can implement the accurate settlement to the light-operated luminance that lamps and lanterns were lighted and were extinguished and correspond, make the utility model discloses for the control circuit of the same kind among the prior art, more energy-conserving in the use.

Drawings

Fig. 1 is an electrical schematic diagram of a control circuit of a general light-operated automatic switch in the prior art, and shows a LAMP to be controlled LAMP LAMP;

fig. 2 is an electrical schematic diagram of the present invention, in which LAMP controlled LAMP is also shown.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

(example 1)

Referring to fig. 2, the control circuit of the light-operated automatic switch of the present embodiment mainly includes a filtering and rectifying module, a first filtering and voltage-stabilizing module, a relay and its driving module, a second filtering and voltage-stabilizing module, and a relay on-off control module.

The filtering and rectifying module is used for outputting direct-current voltage after filtering and rectifying the alternating current Uin. As a specific implementation manner, in this embodiment, the filtering and rectifying module mainly comprises a resistor R1, a resistor R2, a capacitor C1 and a rectifying bridge DB, wherein one end of each of the resistor R1, the resistor R2 and the capacitor C1 has a common contact, the other ends of the resistor R2 and the capacitor C1 and one alternating current input end of the rectifier bridge DB are provided with a common contact, when the LAMP is used, the other end of the resistor R1 is electrically connected with a live wire L of a circuit installed by the controlled LAMP LAMP, and the other alternating current input end of the rectifier bridge DB is electrically connected with a zero wire N of the circuit installed by the controlled LAMP LAMP; and the negative electrode of the direct current output end of the rectifier bridge DB is grounded, namely is connected with GND.

The first filtering and voltage stabilizing module is used for filtering and stabilizing the direct-current voltage output by the filtering and rectifying module and is electrically connected with the filtering and rectifying module. As a specific implementation manner, in this embodiment, the first filtering and voltage stabilizing module is composed of an electrolytic capacitor C2 and a voltage stabilizing diode DW1, a positive electrode of the electrolytic capacitor C2 and a negative electrode of the voltage stabilizing diode DW1 are connected in parallel and are electrically connected to a positive electrode of a dc output terminal of a rectifier bridge DB of the filtering and rectifying module, and a negative electrode of the electrolytic capacitor C2 and a positive electrode of the voltage stabilizing diode DW1 are connected to GND.

The relay and the driving module thereof are used for correspondingly controlling the on-off of the power supply of the LAMP to be controlled under the control of the relay on-off control module, and the relay and the driving module thereof are electrically connected with the first filtering voltage stabilizing module. As a specific implementation manner, in this embodiment, the relay and the driving module thereof mainly include a relay J1, a transistor Q1, a diode D5, and a resistor R5. One end of a coil of the relay J1 and the negative electrode of the diode D5 are in common connection with the negative electrode of the voltage stabilizing diode DW1 of the first filtering voltage stabilizing module, the other end of the coil of the relay J1, the positive electrode of the diode D5 and the collecting electrode of the triode Q1 are in common connection, the base electrode of the triode Q1 is electrically connected with one end of the resistor R5, the emitter electrode of the triode Q1 is connected with GND, the moving contact of the relay J1 is electrically connected with the live wire L of the circuit installed by the controlled LAMP LAMP, the normally-open static contact of the relay J1 is electrically connected with one power supply end of the controlled LAMP LAMP, and the other power supply end of the controlled LAMP LAMP is electrically connected with the zero wire N of the circuit installed by the controlled LAMP LAMP.

The second filtering voltage-stabilizing module is used for filtering and stabilizing the direct-current power supply of the input relay on-off control module, and the second filtering voltage-stabilizing module is electrically connected with the relay and the drive module thereof. As a specific implementation manner, in this embodiment, the second filtering and voltage stabilizing module mainly includes a resistor R6, an electrolytic capacitor C3, and a voltage stabilizing diode DW2, one end of the resistor R6 and a cathode of a diode D5 of the relay and the driving module thereof have a common contact, the other end of the resistor R6, an anode of the electrolytic capacitor C3, and a cathode of the voltage stabilizing diode DW2 have a common contact, and a cathode of the electrolytic capacitor C3 and an anode of the voltage stabilizing diode DW2 are connected to GND.

As shown in a dotted line frame in fig. 2, the relay on-off control module is configured to output a corresponding control signal according to the detected light brightness, control the relay J1 through the relay and the driving module thereof to correspondingly control on-off of the power supply of the LAMP to be controlled, and is respectively electrically connected to the second filtering and voltage stabilizing module, the relay and the driving module thereof. As a specific implementation manner, in this embodiment, the relay on-off control module mainly includes an infrared sensor D6, a photoresistor RM, a resistor R3, a resistor R4, and a single chip microcomputer U1. Singlechip U1 has power foot, ground pin, first signal input foot, second signal input foot and control signal output foot, and singlechip U1 embeds has first and second voltage comparison threshold. In this embodiment, the single chip microcomputer is an ATtiny13 type single chip microcomputer, and has No. 1-8 functional pins, where No. 8 and No. 4 pins are a power pin and a ground pin, respectively, and No. 2 and No. 3 pins are a first signal input pin and a second signal input pin, respectively. The photoresistor RM may also be replaced by electronic components such as photodiodes, phototransistors, which are capable of receiving high energy spectra of sunlight.

It should be emphasized that the program built in the single chip microcomputer 1 is the simplest and most mature prior art.

A control signal output pin (pin 6 of the singlechip U1, a voltage signal output by the singlechip U1 is recorded as Vout) is electrically connected with the other end of a resistor R5 of the relay and a driving module thereof, one ends of the infrared sensor D6 and the photoresistor RM, a power supply pin (pin 8) of the singlechip U1 and a cathode of a zener diode DW2 of the second filtering and voltage stabilizing module have a common contact, the other end of the infrared sensor D6, one end of the resistor R3 and a first signal input pin (pin 2) of the singlechip U1 have a common contact (the voltage of the common contact is recorded as V1 in the working process), the other end of the photoresistor RM, one end of the resistor R4 and a second signal input pin (pin 3) of the singlechip U1 have a common contact (the voltage of the common contact is recorded as V2 in the working process), and the other ends of the resistor R3 and the resistor R4 and a grounding pin (pin 4) of the singlechip U1 are connected with GND.

The working principle and the process of the control circuit of the light-operated automatic switch of the embodiment are briefly described as follows:

when the LAMP works, the infrared sensor D6 receives a high-energy spectrum in sunlight (back illumination light generated by LAMP LAMP is abandoned), and generates a voltage signal V1 through the resistor R3; the photoresistor RM receives a light brightness signal in the environment and generates a voltage signal V2 through a resistor R4; the single chip microcomputer U1 collects a voltage signal V1 and a voltage signal V2 in real time, compares the real-time voltage signal V1 and the voltage signal V2 with a first voltage comparison threshold and a second voltage comparison threshold which are arranged in the single chip microcomputer U1 respectively, only when the real-time voltage signal V1 is smaller than the first comparison threshold and simultaneously the voltage signal V2 is smaller than the second voltage comparison threshold, the voltage signal Vout output by a control signal output pin of the single chip microcomputer U1 is at a high level, a triode Q1 of a relay and a driving module thereof are conducted, a coil of the relay J1 is electrified to work, so that a movable contact of the relay J1 is changed from being in contact with a normally closed fixed contact to being in contact with a normally open fixed contact, the controlled LAMP is electrified to be lightened, and the LAMP is lightened along with the increase of the brightness of the environment when the LAMP is naturally bright, the resistance values of the infrared sensor D6 and the photoresistor RM are reduced, the current in the circuit is increased, so that the real-time voltage signals V1 and V2 are increased, when the voltage signal V1 is increased to reach or exceed a first comparison threshold value and simultaneously the voltage signal V2 is increased to reach or exceed a second comparison threshold value V2, the voltage signal Vout output by the control signal output pin of the singlechip U1 is at a low level, the triode Q1 is cut off, the movable contact of the relay J1 is restored to be in contact with the normally closed fixed contact, so that the controlled LAMP is powered off and extinguished, and the steps are repeated, so that the control circuit of the light-operated automatic switch of the embodiment automatically controls the on and off of the controlled LAMP according to the ambient light brightness.

It can be seen from the foregoing that, in the control circuit of the light-operated automatic switch of the embodiment, the infrared sensor D6 sensitive to the natural light containing infrared rays and the photo resistor RM for detecting the brightness of the environment are arranged, the single chip microcomputer U1 is used for sampling two paths of real-time voltage signals V1 and V2 and comparing the two paths of real-time voltage signals with the built-in threshold value, only the two paths of voltage signals V1 and V2 simultaneously satisfy the condition of turning on or off the LAMP, the single chip microcomputer U1 correspondingly sends high/low level signals, and the relay J1 is used for turning on and off the LAMP to be controlled. Therefore, the technical problem that the existing control circuit of the light-operated automatic switch only adopting one photosensitive element is easy to cause unstable illumination and even damage due to repeated opening and closing of the controlled lamp can be effectively solved; in addition, the first voltage comparison threshold and the second voltage comparison threshold which are arranged in the single chip microcomputer U1 can be conveniently adjusted and set according to factors such as the using place of the lamp, the environment, the season and the like, namely, the light-operated brightness corresponding to the turning-on and turning-off of the lamp can be accurately set, so that the control circuit is more energy-saving in the using process compared with the similar control circuit in the prior art.

The above embodiments are illustrative of the specific embodiments of the present invention, but not limiting to the present invention, and those skilled in the relevant art can also make various changes and modifications to obtain the equivalent technical solutions without departing from the spirit and scope of the present invention, so that all equivalent technical solutions should fall under the protection scope of the present invention.

Claims

1. A control circuit of a light-operated automatic switch comprises a filtering and rectifying module for converting input alternating current into direct current, a first filtering and voltage-stabilizing module electrically connected with the filtering and rectifying module, a relay and a driving module thereof electrically connected with the first filtering and voltage-stabilizing module, and a second filtering and voltage-stabilizing module electrically connected with the relay and the driving module thereof, and is characterized in that: the LAMP control system also comprises a relay on-off control module which is respectively electrically connected with the relay, the driving module of the relay and the second filtering voltage stabilizing module and is used for outputting corresponding control signals according to the detected light brightness and controlling the on-off of the power supply of the LAMP to be controlled through the relay and the driving module of the relay; the relay on-off control module comprises an infrared sensor D6, a photoresistor RM, a resistor R3, a resistor R4 and a single chip microcomputer U1, the single chip microcomputer U1 is provided with a power supply pin, a grounding pin, a first signal input pin, a second signal input pin and a control signal output pin, the control signal output pin of the single chip microcomputer U1 is electrically connected with the relay and a driving module thereof, a common contact point of each end of the infrared sensor D6 and the photoresistor RM and the power supply pin of the single chip microcomputer U1 is electrically connected with a second filtering and voltage stabilizing module, a common contact point of each other end of the infrared sensor D6, one end of the resistor R3 and the first signal input pin of the single chip microcomputer U1 is arranged at the other end of the photoresistor RM, one end of the resistor R4 and the second signal input pin of the single chip microcomputer U1, and the other ends of the resistor R3 and the resistor R4 and the grounding pin of the single chip microcomputer U1 are grounded.

2. The control circuit of a light-operated automatic switch according to claim 1, characterized in that: the photoresistor RM is replaced by a photodiode or a phototriode.

3. The control circuit of a light-operated automatic switch according to claim 1, characterized in that: the single chip microcomputer U1 is an ATtiny13 type single chip microcomputer with No. 1-8 functional pins, and the power supply pin and the grounding pin of the single chip microcomputer U1 are No. 8 pin and No. 4 pin correspondingly; the first signal input pin and the second signal input pin of the singlechip U1 are the pins No. 2 and No. 3 correspondingly, and the control signal output pin of the singlechip U1 is the pin No. 6.

4. The control circuit of a light-operated automatic switch according to claim 1, characterized in that: the filtering and rectifying module comprises a resistor R1, a resistor R2, a capacitor C1 and a rectifying bridge DB, wherein each end of the resistor R1, the resistor R2 and the capacitor C1 is provided with a common joint, each other end of the resistor R2 and the capacitor C1 and one alternating current input end of the rectifying bridge DB are provided with a common joint, when the filtering and rectifying module is used, the other end of the resistor R1 is electrically connected with a live wire L of a circuit installed by the controlled LAMP LAMP, and the other alternating current input end of the rectifying bridge DB is electrically connected with a zero wire N of the circuit installed by the controlled LAMP LAMP; and the negative electrode of the direct current output end of the rectifier bridge DB is grounded.

5. The control circuit of a light operated automatic switch as set forth in claim 4, wherein: the first filtering and voltage-stabilizing module comprises an electrolytic capacitor C2 and a voltage-stabilizing diode DW1, the anode of the electrolytic capacitor C2 and the cathode of the voltage-stabilizing diode DW1 are connected in parallel and electrically connected with the anode of the direct-current output end of a rectifier bridge DB of the filtering and rectifying module, and the cathode of the electrolytic capacitor C2 and the anode of the voltage-stabilizing diode DW1 are grounded.

6. The control circuit of a light operated automatic switch as set forth in claim 5, wherein: the relay and the driving module thereof comprise a relay J1, a triode Q1, a diode D5 and a resistor R5, one end of a coil of the relay J1 and the negative electrode of the diode D5 have a common contact with the negative electrode of a voltage stabilizing diode DW1 of the first filtering voltage stabilizing module, the other end of the coil of the relay J1, the positive electrode of the diode D5 and the collector electrode of the triode Q1 have a common contact, the base electrode of the triode Q1 is electrically connected with one end of the resistor R5, the emitter of the triode Q1 is grounded, the moving contact of the relay J1 is electrically connected with a live wire L of a circuit installed by the controlled LAMP LAMP, the normally-open static contact of the relay J1 is electrically connected with one power end of the controlled LAMP LAMP, and the other power end of the controlled LAMP is electrically connected with a zero line N of the circuit installed by the controlled LAMP LAMP.

7. The control circuit of a light operated automatic switch as set forth in claim 6, wherein: the second filtering voltage stabilizing module comprises a resistor R6, an electrolytic capacitor C3 and a voltage stabilizing diode DW2, one end of the resistor R6 and the cathode of a diode D5 of the relay and the driving module thereof are provided with a common connection point, the other end of the resistor R6, the anode of the electrolytic capacitor C3 and the cathode of the voltage stabilizing diode DW2 are provided with a common connection point, and the cathode of the electrolytic capacitor C3 and the anode of the voltage stabilizing diode DW2 are grounded.

8. The control circuit of a light operated automatic switch as set forth in claim 7, wherein: and a control signal output pin of a singlechip U1 of the relay on-off control module is electrically connected with the other end of a resistor R5 of the relay and a driving module thereof, and a common contact point of each end of an infrared sensor D6 and a photoresistor RM and a power supply pin of the singlechip U1 and a cathode of a voltage stabilizing diode DW2 of the second filtering voltage stabilizing module are common contact points.