CN104298154A - Public kitchen electric control and lamp control system based on single chip microcomputer - Google Patents

Abstract

The invention discloses a public kitchen electric control and light control system based on a single-chip microcomputer, which includes a single-chip processor, a power conversion module, a brightness detection module, a fluorescent lamp control module, and a high-power relay control module; Infrared switch circuit and medium power relay, high power relay control module includes high power relay and high power electrical appliance connected in series in high power electrical circuit, medium power relay and high power relay are respectively connected with single chip processor; brightness detection module includes photosensitive The resistor divider circuit and the A/D conversion module, the A/D conversion module is connected with the single-chip processor, the input terminal of the power conversion module is connected with the infrared switch circuit, and the output terminal is connected with the single-chip processor and the brightness detection module. The present invention adopts two schemes to control the fluorescent lamp circuit and the high-power electrical appliance circuit in the used room, so that the fluorescent lamp and the high-power electrical appliance in the used room do not interfere with each other.

Description

A public kitchen electric control and light control system based on single chip microcomputer

the

Technical field:

The invention relates to a public kitchen electric control and light control system based on a single-chip microcomputer, which belongs to the field of smart home.

Background technique:

The single-chip microcomputer control system has entered the stage of smart home application. At present, public kitchens still use manual control of power and power consumption systems. Generally, manual switches are used to control the fluorescent lamps on and off, and switch switches are used to control high-power power consumption lines in the kitchen. It is very inconvenient to use manual control for these control methods, and often encounter forgetting phenomena, which may cause a large amount of waste of electric energy and cause loss of life and property. Moreover, the switch is often used to cause problems such as aging and poor contact, making maintenance difficult.

Infrared switch circuits are more and more used in daily life, and the existing infrared switch circuits are only used for the control of corridor lights and can only be turned on when someone enters when the light is dark, and the function is relatively single.

Relays are commonly used power switch control devices. At present, electromagnetic relays, inductive relays, rectifier relays, electronic relays and digital relays are commonly used. However, due to the different power requirements of different electrical appliances, relays with different control capabilities need to be used for corresponding equipment.

Therefore, it is necessary to improve the prior art to solve the deficiencies of the prior art.

Invention content:

The present invention provides a public kitchen electric control and light control system based on a single-chip microcomputer in order to solve the above-mentioned problems in the prior art.

The technical scheme adopted in the present invention has:

A public kitchen electric control and light control system based on single-chip microcomputer, including fluorescent lamp circuit and high-power electrical appliance circuit, also includes single-chip processor, power conversion module, brightness detection module, fluorescent lamp control module, high-power relay control module; fluorescent lamp control module It includes an infrared switch circuit and a medium-power relay connected in series in the fluorescent lamp circuit. The high-power relay control module includes a high-power relay and a high-power electrical appliance connected in series in the circuit of a high-power electrical appliance. Connected; the brightness detection module includes a photoresistor voltage divider circuit and an A/D conversion module, the A/D conversion module is connected with the single-chip processor, the input terminal of the power conversion module is connected with the infrared switch circuit, and the output terminal is connected with the single-chip processor and the brightness detection module connected.

A further design of the present invention is:

The infrared switch circuit includes RD8702 integrated circuit chip and RS03 infrared sensor; the photoresistor voltage divider circuit is composed of resistor R1 and photoresistor R2 connected in series, resistor R1 is connected to the power conversion module, and photoresistor R2 is connected to the A/D conversion module.

The system also includes a Fresnel lens, and the RS03 infrared sensor in the infrared switch circuit is placed behind the Fresnel lens.

The system is set at the entrance in the kitchen.

The single-chip processor adopts a C8051F340 single-chip microcomputer; the model of the medium-power relay is JZC-7FF relay; the model of the high-power relay is JQX-38F relay; the power conversion module adopts the MTW5-S5C power supply module.

The present invention has following beneficial effects:

(1) The present invention is simple to implement. Two sets of schemes are adopted to control the control fluorescent lamp circuit and the high-power electrical circuit in the used room, so that the fluorescent lamp and the high-power circuit in the used room do not interfere with each other.

(2) The present invention does not require manual operation, saves electric energy, is safe to use, and has wide popularity.

the

Description of drawings:

Figure 1 is a schematic diagram of the circuit of the present invention.

Figure 2 is a schematic diagram of the infrared switch circuit of the present invention.

the

Detailed ways:

The present invention will be further described below in conjunction with the accompanying drawings.

Please refer to Fig. 1, a public kitchen electric control and light control system based on a single-chip microcomputer of the present invention has a power conversion module, a brightness detection module, a single-chip processor, a high-power relay control module, a fluorescent lamp control module, a keyboard, a display module, and a fluorescent lamp Lines and high-power electrical circuits; fluorescent lamp lines and high-power electrical circuits are connected to household 220V lines, fluorescent lamp control modules include infrared switch circuits, fluorescent lamps and medium-power relays, infrared switch circuits, medium-power relays and fluorescent bulbs are connected in series to fluorescent lamp circuits The medium and medium power relays control the power on and off of the fluorescent lamp circuit; the high power relay control module includes a high power relay and a high power electrical appliance connected in series in the high power electrical circuit, and the high power relay controls the power on and off of the high power electrical circuit; The power relay and the high-power relay are respectively connected with the single-chip processor.

The brightness detection module includes a photoresistor voltage divider circuit and an A/D conversion module, the A/D conversion module is connected with the single-chip processor, the input end of the power conversion module is connected with the infrared switch circuit, and the output end is connected with the single-chip processor and the brightness detection module; The photoresistor transmits the sensed brightness to the A/D conversion module, and after the A/D conversion module performs analog-to-digital conversion, it sends it to the single-chip processor. The power conversion module adopts MTW5-S5C power module, which converts 220V AC into 5V DC. Single-chip microcomputer processor among the present invention adopts C8051F340 single-chip microcomputer; The model that medium power relay adopts is JZC-7FF relay; The model of high-power relay is JQX-38F relay; Display module adopts the liquid crystal display LCD1602 that has eight parallel ports.

In the present invention, the corresponding control terminal on the single-chip processor is also connected with an input keyboard, and the keyboard can manually control the fluorescent lamp control module and the high-power relay control module, thereby controlling the on-off of the fluorescent lamp circuit and the high-power electrical circuit, and at the same time, each controlled Part of the working status is displayed on the display module for human-computer interaction.

Please refer to Figure 2. The infrared switch circuit includes the RD8702 integrated circuit chip and the RS03 infrared sensor. The infrared signal sensed by the pyro-infrared sensor RS03 is converted into a voltage signal by itself and then amplified twice through the RD8702 integrated circuit chip. The comparator in the RD8702 integrated circuit chip performs comparison and sends it to the internal control circuit of the chip, and the control circuit outputs a zero-crossing pulse to trigger the conduction of the bidirectional thyristor Q1. The invention adopts an AC zero-crossing trigger mode when controlling the conduction of the bidirectional thyristor, thereby greatly reducing the surge when the thyristor is conducting, and prolonging the service life of the fluorescent lamp. The integrated circuit chip has its own system clock for conduction delay through the internal timer. Its delay duration can be changed by changing the value of R6; in addition, the present invention uses the brightness detection module for the detection of brightness, so the 9-pin light control input terminal of the RD8702 integrated circuit chip is directly connected to a high level so that the infrared switch circuit detects that someone has entered Even in the daytime when someone enters the kitchen, the infrared switch circuit works, and the power conversion module is connected to supply power to the single-chip microcomputer, and the single-chip processor can also open the high-power electrical circuit. Separate and ground the fluorescent lamp circuit and the high-power electrical circuit to ensure the safety and reliability of the system. In order to meet the functional requirements of this design for the infrared switch circuit, the infrared switch circuit is connected to the input terminal of the power conversion module. The invention also includes a Fresnel lens. The RS03 infrared sensor in the infrared switch circuit is placed at the rear of the Fresnel lens. The RS03 infrared sensor should be used in conjunction with the Fresnel lens to expand the detection angle, and P2 is the interface of the daylight bulb. The present invention is arranged at the entrance position in the kitchen.

Please refer to Fig. 1 and Fig. 2, the control flow of the present invention is that when the infrared switch circuit detects that someone enters the public kitchen, the infrared switch circuit is turned on, and the power conversion module provides power for the single-chip processor at this time. The single-chip processor detects the current light intensity of the public kitchen through the brightness detection module.

When the brightness detection module detects that the current light is dark, the single-chip processor turns on the medium-power relay and the high-power relay. Appliances can be used.

When the brightness detection module detects that the current light is sufficient, the single-chip processor only controls the high-power relay, the high-power electrical circuit is turned on, and the high-power electrical appliances connected to the high-power electrical circuit can be used.                       

If people leave the public kitchen, the infrared switch circuit is disconnected, and the single-chip processor is powered off, the medium-power relay is disconnected from the high-power electrical appliance, and the fluorescent lamp circuit and the high-power electrical appliance circuit of the public kitchen are powered off.

The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, some improvements can also be made without departing from the principle of the present invention, and these improvements should also be regarded as the invention. protected range.

Claims (5)

1. the automatically controlled and lighting control system of a SCM Based public kitchen, comprise daylight lamp circuit and high-power electric appliance circuit, it is characterized in that: also comprise processor of single chip computer, power transfer module, brightness detection module, daylight lamp control module, high power relay control module; Daylight lamp control module comprises and is connected on infrared switch circuit in daylight lamp circuit and middle power relay, high power relay control module comprises and is connected on high power relay in high-power electric appliance circuit and high-power electric appliance, and middle power relay is connected with processor of single chip computer respectively with high power relay; Brightness detection module comprises photoresistance bleeder circuit and A/D modular converter, and A/D modular converter is connected with processor of single chip computer, and power transfer module input end is connected with infrared switch circuit, and output terminal is connected with brightness detection module with processor of single chip computer.

2. the automatically controlled and lighting control system of SCM Based public kitchen as claimed in claim 1, is characterized in that: infrared switch circuit comprises RD8702 integrated circuit (IC) chip and RS03 infrared sensor; Photoresistance bleeder circuit is in series by resistance R1 and photoresistance R2, and resistance R1 is connected with Power convert mould, and photoresistance R2 is connected with A/D modular converter.

3. the automatically controlled and lighting control system of SCM Based public kitchen as claimed in claim 1, it is characterized in that: this system also comprises Fresnel Lenses, the RS03 infrared sensor in described infrared switch circuit is placed in Fresnel Lenses rear portion.

4. the automatically controlled and lighting control system of SCM Based public kitchen as claimed in claim 1, is characterized in that: this Operation system setting is entered position in kitchen.

5. the automatically controlled and lighting control system of SCM Based public kitchen as claimed in claim 1, is characterized in that: described processor of single chip computer adopts C8051F340 single-chip microcomputer; The model of middle power relay is JZC-7FF relay; The model of high power relay is JQX-38F relay; Power transfer module adopts MTW5-S5C power module.