CN210694441U

CN210694441U - Illumination control system based on PLC controller

Info

Publication number: CN210694441U
Application number: CN201921563008.3U
Authority: CN
Inventors: 陈英; 张仕海
Original assignee: Leshan Vocational and Technical College
Current assignee: Leshan Vocational and Technical College
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-06-05
Anticipated expiration: 2029-09-19

Abstract

The utility model discloses a lighting control system based on a PLC controller, which relates to the technical field of lighting control systems and comprises a PLC controller, a multiplexer switch, an infrared sensor group, an illumination sensor group and a lamp group; the multi-path switch and the lamp group are respectively and electrically connected with the PLC, and the infrared sensor group and the illumination sensor group are respectively and electrically connected with the multi-path switch; the PLC is externally connected with a power supply; a timer is arranged in the PLC.

Description

Illumination control system based on PLC controller

Technical Field

The utility model relates to a lighting control system technical field, concretely relates to lighting control system based on PLC controller.

Background

At present, most classrooms of all colleges and universities are in an open management mode, indoor illumination is generally composed of a plurality of daylight-off lamp tubes, and the fixed illumination intensity can be formed when the daylight lamps in the colleges and universities are started or extinguished simultaneously. Meanwhile, the switch needs to be manually controlled, and the phenomenon of turning on the lamp still commonly exists under the condition of high indoor illumination in daytime sometimes; the lamps of the whole classroom are all on even when few people are in the classroom; even the phenomenon of wasting electric energy such as people walking on the lamp can occur.

SUMMERY OF THE UTILITY MODEL

The utility model provides a to prior art, provide an illumination control system based on PLC controller.

The utility model discloses a following technical scheme realizes: the lighting control system based on the PLC comprises the PLC, a multiplexer switch, an infrared sensor group, an illumination sensor group and a lamp group; the multi-path switch and the lamp group are respectively and electrically connected with the PLC, and the infrared sensor group and the illumination sensor group are respectively and electrically connected with the multi-path switch; the PLC is externally connected with a power supply; a timer is arranged in the PLC.

The infrared sensor group and the illumination sensor group adopt a multiplexer switch centralized control switch to realize multipath control.

Further, the lighting control system further comprises a manual switch, wherein the manual switch comprises a projector switch and a manual lamp group switch; the projector switch is electrically connected with the PLC, and the manual lamp bank switch is electrically connected with the lamp bank.

The manual lamp bank switch and the PLC controller separately control the lamp bank to be turned on and turned off, and intelligent control and manual control of the lamp bank are achieved. The projector switch is electrically connected with the PLC, so that the projector switch can control the switch of the PLC, the lighting control system is temporarily turned off, and the projector can be conveniently used at any time.

The timer built-in the PLC controller controls the timing switch of the PLC controller in a timing mode, the PLC controller can be started and closed in a timing mode, power consumption of the PLC controller in the process of running at night is reduced, meanwhile, the timer can also achieve timing closing of the lamp bank, and the problem that a user forgets to close the lamp bank to cause electric energy waste is avoided.

Furthermore, the infrared sensor group comprises a plurality of infrared sensors, the illumination sensor group comprises a plurality of illumination sensors, and the infrared sensors and the illumination sensors are uniformly distributed; the lamp group comprises a plurality of illuminating lamps which are uniformly distributed; the quantity and the distribution of the infrared sensors and the illumination sensors are the same; the multi-path switch comprises a first multi-path switch and a second multi-path switch, the infrared sensor group is electrically connected with the PLC through the first multi-path switch, and the illumination sensor group is electrically connected with the PLC through the second multi-path switch.

The infrared sensor and the illumination sensor are respectively controlled in a centralized way through two paths of multiplexer switches, so that the infrared sensor and the illumination sensor are controlled separately.

Further, the infrared sensor is connected with the first multiplexer switch through an infrared connection circuit, and the infrared connection circuit comprises a resistor R1, a resistor R2 and a triode Q1; three connection ends of the triode Q1 are respectively and electrically connected with the resistor R1, the resistor R2 and the power supply; the output end of the infrared sensor is connected with the other end of the resistor R2; the other end of the resistor R1 is grounded; the connection point of the multiplexer switch and the infrared connection circuit is arranged between the triode Q1 and the resistor R1.

Further, the infrared sensor adopts an HC-SR501 human body infrared sensor.

Further, the illumination sensor comprises an ambient light acquisition circuit; the ambient light acquisition circuit comprises a phototriode LDR1, a resistor R3, a resistor R4 and a triode Q2; the resistor R3, the phototriode LDR1 and the resistor R4 are sequentially connected in series, one end of the resistor R3 is connected with a power supply, and one end of the resistor R4 is connected with a multiplexer switch; and three connection ends of the triode Q2 are respectively electrically connected with one end of the resistor R3 connected with the phototriode LDR1, one end of the resistor R4 connected with the second multiplexer switch and a power supply.

Further, the multiplexer switch is an AD7501 multiplexer switch.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

(1) the utility model provides a lighting control system based on PLC controller detects classroom personnel through infrared sensor and light sensor and distributes and ambient light as the sensor, and then realizes the intelligence switch of banks through the PLC controller, realizes the illumination intelligent control of every region in the classroom, practices thrift the electric energy.

(2) The utility model provides a lighting control system based on PLC controller still sets up the timer, to the positioning control of PLC controller, realizes closing of PLC controller night, practices thrift the electric energy.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the infrared connection circuit of the present invention;

fig. 3 is a circuit diagram of an ambient light acquisition circuit of the illumination sensor of the present invention;

fig. 4 is a schematic diagram of a pin of the PLC controller of the present invention;

fig. 5 is a schematic pin diagram of a first multiplexer switch according to the present invention;

fig. 6 is a pin diagram of a second multiplexer switch according to the present invention;

wherein: 1-water inlet cavity channel, 11-flushing side hole, 12-water inlet branch pipe, 13-thread hole, 2-water outlet cavity channel, 21-drainage side hole, 22-water outlet branch pipe, 3-metal guide wire, 4-traction silk thread, 41-hard section, 42-soft section, 5-silk thread outlet pipe, 51-joint and 6-retention clip.

Detailed Description

The present invention will be described in further detail with reference to examples, but the present invention is not limited thereto.

Example 1

As shown in fig. 1, a lighting control system based on a PLC controller includes a PLC controller, a multiplexer switch, an infrared sensor group, an illumination sensor group, and a lamp group; the multi-path switch and the lamp group are respectively and electrically connected with the PLC, and the infrared sensor group and the illumination sensor group are respectively and electrically connected with the multi-path switch; the PLC is externally connected with a power supply; a timer is arranged in the PLC. The infrared sensor group and the illumination sensor group adopt a multiplexer switch centralized control switch to realize multipath control.

The manual switch and the PLC controller separately control the on and off of the lamp bank, and intelligent control and manual control of the lamp bank are achieved.

The infrared sensor group comprises a plurality of infrared sensors, the illumination sensor group comprises a plurality of illumination sensors, and the infrared sensors and the illumination sensors are uniformly distributed; the lamp group comprises a plurality of illuminating lamps which are uniformly distributed; the quantity and the distribution of the infrared sensors and the illumination sensors are the same; the multi-path switch comprises a first multi-path switch and a second multi-path switch, the infrared sensor group is electrically connected with the PLC through the first multi-path switch, and the illumination sensor group is electrically connected with the PLC through the second multi-path switch.

As shown in fig. 2 to 6, taking distribution in a classroom as an example, the infrared sensor group includes 5 infrared sensors distributed on a ceiling of the classroom, and the distribution includes five areas, namely a podium area, an upper left classroom area, an upper right classroom area, a lower left classroom area and a lower right classroom area, which completely cover the whole classroom and realize the human body infrared detection of the whole classroom area. And each infrared sensor is electrically connected with the S11-S15 interfaces of the first multiplexer switch in a one-to-one correspondence manner through an infrared connecting circuit.

The lamp group is also divided into 5 parts, each part comprises at least one illuminating lamp, and the distribution mode of the lamp group is consistent with that of the infrared sensor. The illumination sensor group also comprises 5 illumination sensors, and the distribution mode of the illumination sensors is consistent with that of the infrared sensors; and each illumination sensor is respectively electrically connected with the 21-S25 interfaces of the second multiplexer switch in a one-to-one correspondence manner.

The illumination control system can judge whether people sit in different places of a classroom or not through detection results of infrared sensors distributed in different areas of the classroom in the control process, and then the PLC controls the illumination lamp in the area to be turned on or turned off, so that when the number of people is small, the intelligent switch of the illumination lamp in the classroom is realized, and the electric energy consumption of illumination in the unmanned area of the classroom is saved.

Meanwhile, at night, no students or teachers exist in the classroom under normal conditions, so that illumination is not needed, and the PLC does not need to work. However, in order to prevent accidents, a manual switch for controlling the switch of the lamp group is arranged, so that the lamp group can be manually turned on and off under special conditions.

Preferably, the multiplexer switch is an AD7501 multiplexer switch.

Example 2

The embodiment is improved on the basis of embodiment 1, and the improvement is as follows: the illumination sensor comprises an ambient light acquisition circuit; the ambient light acquisition circuit comprises a phototriode LDR1, a resistor R3, a resistor R4 and a triode Q2; the resistor R3, the phototriode LDR1 and the resistor R4 are sequentially connected in series, one end of the resistor R3 is connected with a power supply, and one end of the resistor R4 is connected with a multiplexer switch; and three connection ends of the triode Q2 are respectively electrically connected with one end of the resistor R3 connected with the phototriode LDR1, one end of the resistor R4 connected with the second multiplexer switch and a power supply.

The HC-SR501 high-level output full-automatic sensing sensor outputs high level when a person enters a sensing range, outputs low level after a short delay if the person leaves, and the controller judges whether the person enters a classroom by judging the level.

The illumination sensor comprises an ambient light acquisition circuit; the ambient light acquisition circuit comprises a phototriode LDR1, a resistor R3, a resistor R4 and a triode Q2; the resistor R3, the phototriode LDR1 and the resistor R4 are sequentially connected in series, one end of the resistor R3 is connected with a power supply, and one end of the resistor R4 is connected with a multiplexer switch; and three connection ends of the triode Q2 are respectively electrically connected with one end of the resistor R3 connected with the phototriode LDR1, one end of the resistor R4 connected with the second multiplexer switch and a power supply.

When the ambient light intensity is higher than the specified degree, the phototriode LDR1 is in a low-resistance state, namely less than 1K ohm, the base voltage of the NPN type triode Q2 is increased, the triode Q2 is in a saturation state and is conducted, and the low level is output from the collector side. When the light intensity is less than the prescribed level, the phototriode LDR1 is in a high-impedance state, i.e., 100k ohm, at this time, the triode Q2 is in a cut-off state, and the collector side outputs a high level.

Other parts in this embodiment are substantially the same as those in embodiment 1, and thus are not described in detail.

The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.

Claims

1. The utility model provides a lighting control system based on PLC controller which characterized in that: the system comprises a PLC controller, a multiplexer switch, an infrared sensor group, an illumination sensor group and a lamp group; the multi-path switch and the lamp group are respectively and electrically connected with the PLC, and the infrared sensor group and the illumination sensor group are respectively and electrically connected with the multi-path switch; the PLC is externally connected with a power supply; a timer is arranged in the PLC.

2. The lighting control system based on the PLC controller as claimed in claim 1, wherein: the infrared sensor group comprises a plurality of infrared sensors, the illumination sensor group comprises a plurality of illumination sensors, and the infrared sensors and the illumination sensors are uniformly distributed; the lamp group comprises a plurality of illuminating lamps which are uniformly distributed; the quantity and the distribution of the infrared sensors and the illumination sensors are the same; the multi-path switch comprises a first multi-path switch and a second multi-path switch, the infrared sensor group is electrically connected with the PLC through the first multi-path switch, and the illumination sensor group is electrically connected with the PLC through the second multi-path switch.

3. The lighting control system based on the PLC controller as claimed in claim 2, wherein: the infrared sensor is connected with the first multiplexer switch through an infrared connection circuit, and the infrared connection circuit comprises a resistor R1, a resistor R2 and a triode Q1; three connection ends of the triode Q1 are respectively and electrically connected with the resistor R1, the resistor R2 and the power supply; the output end of the infrared sensor is connected with the other end of the resistor R2; the other end of the resistor R1 is grounded; the connection point of the multiplexer switch and the infrared connection circuit is arranged between the triode Q1 and the resistor R1.

4. The lighting control system based on the PLC controller as claimed in claim 3, wherein: the infrared sensor is an HC-SR501 human body infrared sensor.

5. The lighting control system based on the PLC controller as claimed in claim 2, wherein: the illumination sensor comprises an ambient light acquisition circuit; the ambient light acquisition circuit comprises a phototriode LDR1, a resistor R3, a resistor R4 and a triode Q2; the resistor R3, the phototriode LDR1 and the resistor R4 are sequentially connected in series, one end of the resistor R3 is connected with a power supply, and one end of the resistor R4 is connected with a multiplexer switch; and three connection ends of the triode Q2 are respectively electrically connected with one end of the resistor R3 connected with the phototriode LDR1, one end of the resistor R4 connected with the second multiplexer switch and a power supply.

6. The lighting control system based on the PLC controller as claimed in any one of claims 1-5, wherein: the multiplexer switch is an AD7501 multi-path switch.

7. The lighting control system based on the PLC controller as claimed in any one of claims 1-5, wherein: the projector lamp further comprises a manual switch, wherein the manual switch comprises a projector switch and a manual lamp group switch; the projector switch is electrically connected with the PLC, and the manual lamp bank switch is electrically connected with the lamp bank.