CN203722897U - Street lamp control system based on photo resistor - Google Patents

Abstract

The utility model relates to a street lamp control system based on a photosensitive resistor, comprising a voltage stabilizing circuit module, a sound intake module, a voice control circuit module, a light control circuit module, a signal amplification integer circuit module and a delay processing circuit module. The core element of the circuit module is a photoresistor, and the voltage stabilizing circuit module supplies power for the sound intake module, the sound control circuit module, and the light control circuit module, the output end of the sound intake module is connected to the input end of the sound control circuit module, and the sound control circuit module The output end of the circuit module is connected to the light control circuit module, the voice control circuit module and the light control circuit module transmit signals to the signal amplification and integer circuit module, and the signal amplification and integer circuit module transmits the signal to the delay processing circuit module. The utility model has the advantages of long service life, small size, beautiful appearance, easy manufacture, reliable operation, etc., and is suitable for lighting equipment in corridors of various buildings; at the same time, it reduces energy consumption and saves energy.

Description

A Street Light Control System Based on Photoresistor

technical field

The utility model relates to the field of signal amplification and digital integrated circuit control systems, in particular to a street lamp control system based on photosensitive resistors.

Background technique

In the public places of schools, government agencies, factories and mines and other units, as well as the public corridors of residential areas, the phenomenon of always-on lights is very common, which has caused a great waste of energy. In addition, due to frequent switching or human factors, the damage rate of the wall switch is very high, which increases the amount of maintenance and wastes money. At the same time, the risk of aging of the electric wire is also great. At present, voice-activated lights are usually used in corridors or aisles, which can save a large part of electric energy. However, if the sound of this voice-activated light is too loud during the day, it will become brighter, which will cause waste of electric energy and have a low service life.

Utility model content

The purpose of the utility model is to provide a street lamp control system based on photoresistors in order to overcome the deficiencies of the prior art.

The utility model is realized through the following technical solutions:

A street lamp control system based on a photoresistor, including a voltage stabilizing circuit module, a sound intake module, a voice control circuit module, a light control circuit module, a signal amplification integer circuit module and a delay processing circuit module, the core of the light control circuit module The element is a photoresistor, and the voltage stabilizing circuit module supplies power to the sound intake module, the sound control circuit module, and the light control circuit module, the output end of the sound intake module is connected to the input end of the sound control circuit module, and the output of the sound control circuit module The terminal is connected to the light control circuit module, the voice control circuit module and the light control circuit module transmit the signal to the signal amplification and integer circuit module, and the signal amplification and integer circuit module transmits the signal to the delay processing circuit module.

As a preferred technical solution of the present invention, the voice control circuit module includes a voice control switch, the light control circuit module includes a light control switch, and the voice control switch and the light control switch are respectively connected to the digital integrated circuit module.

As a preferred technical solution of the utility model, the voltage stabilizing circuit module is composed of a power transformer and four rectifying diodes.

As a preferred technical solution of the utility model, the chip in the digital integrated circuit module adopts the model of CD4011.

The working principle of the utility model is:

When there is sound and light, the bulb does not light up. When there is a sound signal coming in and no light is shining on the photoresistor, the resistance value is very large, and the attenuation of the DC control voltage is very small. The electronic switch composed of the triode and the resistor is turned on to charge the bypass capacitor. Since the full charging time is very fast, after the capacitor is fully charged, the DC trigger voltage is added to the electret microphone control terminal through the resistor, the electret is turned on, and the bulb is lit. When the charge in the capacitor is dropped to zero, the electret returns to the cut-off state, and the lamp goes out.

When there is sound but no light, the light bulb is on. When a new sound source appears during the lighting of the bulb, the capacitor will be recharged and then discharged again, that is, the lighting time will be recalculated. If you need to change the lighting time, you only need to change the parameters of the capacitor or bypass resistor.

Use sound and light control switches to replace the switches on the corridors of residential quarters. Only after dark, when someone walks through the stairway and makes footsteps or other sounds, the corridor lights will automatically light up to provide lighting. When people enter the house or When you walk out of the apartment, the corridor lights will automatically turn off after a few minutes of delay. During the day, even if there is sound, the corridor lights will not be on, which can achieve the purpose of energy saving. The sound and light control delay switch is not only suitable for corridors in residential areas, but also suitable for public places such as factories, office buildings, and teaching buildings.

Compared with the existing technology, the beneficial effects of the utility model are: the utility model has the advantages of long service life, small volume, beautiful appearance, easy manufacture, reliable operation, etc., and is suitable for lighting equipment of various building corridors; consumption and save energy.

Description of drawings

Fig. 1 is a block diagram of the utility model;

Fig. 2 is the circuit schematic diagram of the sound and light control circuit module of the present utility model;

Fig. 3 is a block diagram inside the chip in the digital integrated circuit module of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

Please refer to Fig. 1, Fig. 2 and Fig. 3, wherein, Fig. 1 is the functional block diagram of the present utility model, Fig. 2 is the circuit schematic diagram of the sound and light control circuit module of the present utility model, Fig. 3 is the digital integration of the present utility model Internal block diagram of the chip in the circuit module.

The photoresistor-based street lamp control system includes a voltage stabilizing circuit module, a sound intake module, a voice control circuit module, a light control circuit module, a signal amplification and integer circuit module, and a delay processing circuit module. The light control circuit module The core component is a photoresistor, and the voltage stabilizing circuit module supplies power for the sound intake module, the sound control circuit module, and the light control circuit module, the output end of the sound intake module is connected to the input end of the sound control circuit module, and the sound control circuit module The output end of the output terminal is connected to the light control circuit module, the sound control circuit module and the light control circuit module transmit the signal to the signal amplification and integer circuit module, and the signal amplification and integer circuit module transmits the signal to the delay processing circuit module. The voice control circuit module includes a voice control switch, the light control circuit module includes a light control switch, the voice control switch and the light control switch are respectively connected to the digital integrated circuit module, and the voltage stabilizing circuit module is composed of a power transformer, Composed of four rectifying diodes, the chip in the digital integrated circuit module adopts the model CD4011.

When the daytime light is good, no matter how loud the passers-by make, the light bulb will not be on; when the light is dark at night, as long as the voice control circuit module detects a sudden sound, it will automatically turn on for pedestrian lighting, and then turn on again after a few minutes. Automatically turn off, saving energy and electricity. Sound and light dual-control energy-saving lamps have the advantages of small size, beautiful appearance, easy manufacture, and reliable operation. When the sound signal (footsteps, applause, etc.) is received by the electret microphone BM and converted into an electrical signal, the capacitor C1 is coupled to the base of the transistor VT for voltage amplification, and the amplified signal is sent to the NAND gate D2 in CD4011 2 pins, the resistors (R4, R7) are the bias resistors of the triode VT, and the power supply filter capacitor C2 is used for power filtering; in order to make the sound and light switch switch off during the day, even if the light is not on, the photosensitive resistor RG and other components A light control circuit is formed, and resistors (R5, RG) form a series voltage divider circuit. When the environment is dark at night, the resistance value of the photosensitive resistor RG is very large, and the voltage across the resistor RG is high, that is, during the high level period t=2πR8C3, changing the value of the resistor R8 or capacitor C3 can change the delay time to meet different purposes . NAND gate D3 and NAND gate D4 in CD4011 form a two-stage shaping circuit to shape the square wave signal. When the NAND gate C3 is charged to a certain level, the signal is output to a high level after passing through the NAND gate (D3, D4), so that the one-way thyristor is turned on, and the electronic switch is closed; after the NAND gate C3 is fully charged, only Resistor R8 is discharged. When the discharge reaches a certain level, the output of the NAND gate (D3, D4) is low level, so that the one-way thyristor is cut off, the electronic switch is turned off, and a complete electronic switch from on to off is completed. process.

Diodes VD1~VD4 carry out bridge rectification of 220V AC to pulsating DC, which is then stepped down by R1. After filtering by power filter capacitor C2, it becomes the DC power of the circuit, which supplies power for BM, VT, IC chips, etc.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (4)

1. the street lamp control system based on photo resistance, it is characterized in that, comprise voltage stabilizing circuit module, sound acquisition module, sound control circuit module, light-operated circuit module, signal amplification integeral type circuit module and delayed processing circuit module, the core parts of described light-operated circuit module are photo resistance, described voltage stabilizing circuit module is sound acquisition module, sound control circuit module, with light-operated circuit module for power supply, the output of described sound acquisition module connects the input of sound control circuit module, the output of described sound control circuit module connects light-operated circuit module, described sound control circuit module and light-operated circuit module pass to signal amplification integeral type circuit module by signal, described signal amplification integeral type circuit module passes to delayed processing circuit module by signal.

2. a kind of street lamp control system based on photo resistance according to claim 1, it is characterized in that, described sound control circuit module comprises audio-switch, and described light-operated circuit module comprises light-operated switch, and described audio-switch and light-operated switch are connected on respectively in digital integrated circuit module.

3. a kind of street lamp control system based on photo resistance according to claim 1, is characterized in that, described voltage stabilizing circuit module is comprised of power transformer, four rectifier diodes.

4. a kind of street lamp control system based on photo resistance according to claim 2, is characterized in that, the chip in described digital integrated circuit module adopts CD4011 model.