CN212176898U

CN212176898U - Sensor switch circuit capable of intelligently identifying human body moving direction

Info

Publication number: CN212176898U
Application number: CN201922428028.6U
Authority: CN
Inventors: 邓宁芳; 沈震
Original assignee: Wuxi Guige Electronic Technology Co ltd
Current assignee: Wuxi Guige Electronic Technology Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-12-18
Anticipated expiration: 2029-12-30

Abstract

The utility model provides a sensor switch circuit of human moving direction of intelligent recognition relates to the automated control field. Set up sensor switch circuit in automatic door, include: the ultrasonic detection circuit comprises a photoelectric detection circuit, an ultrasonic sensor control circuit and a switch control circuit; the photoelectric detection circuit comprises a plurality of photoelectric sensors for detecting a preset range in front of and behind the automatic door, and each photoelectric sensor is connected with the photoelectric AD converter; the ultrasonic sensor control circuit comprises a single chip microcomputer and an ultrasonic sensor for detecting a preset range in front of and behind the automatic door; each photoelectric AD converter is connected with the single chip microcomputer; the single chip microcomputer is connected with the ultrasonic sensor through a control circuit; the ultrasonic sensor is connected with the memory through the ultrasonic AD converter; the singlechip is connected with the output end of the memory to acquire the frequency shift of the sound wave passing through the object. The utility model provides an automatic door frequent switch, to the difficult problem of object mistake discernment, reached energy-conserving effect.

Description

Sensor switch circuit capable of intelligently identifying human body moving direction

Technical Field

The utility model relates to an automatic control technology especially relates to a sensor switch circuit of human moving direction of intelligent recognition.

Background

With the continuous development of science and technology, people have a continuous demand for improvement of the degree of automation in various aspects of life. Among them, the demand for automation in the fields of automatic doors, voice recognition, and the like is increasing. At present, most automatic doors are controlled to be opened and closed only according to the existence of people. If passers-by only pass in front of the automatic door and do not want to enter the door, the moving mode of the passers-by cannot be judged by the automatic door in the prior art alone. This easily causes the problem of long-term opening of the automatic door, not only wastes energy, but also the frequent opening and closing can greatly reduce the service life of the automatic door.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a human moving direction's of intelligent recognition sensor switch circuit, solved the frequent switch of automatically-controlled door, to the difficult problem of object mistake discernment, reached energy-conserving effect.

Particularly, the utility model provides a human moving direction's of intelligent recognition sensor switch circuit sets up sensor switch circuit in the automatic door, include: the ultrasonic detection circuit comprises a photoelectric detection circuit, an ultrasonic sensor control circuit and a switch control circuit;

the photoelectric detection circuit comprises a plurality of photoelectric sensors for detecting a preset range in front of and behind the automatic door, and each photoelectric sensor is connected with a photoelectric AD converter;

the ultrasonic sensor control circuit comprises a single chip microcomputer and an ultrasonic sensor for detecting a preset range in front of and behind the automatic door; each photoelectric AD converter is connected to the single chip microcomputer; the single chip microcomputer is connected with the ultrasonic sensor through a control circuit; the ultrasonic sensor is connected with the memory through an ultrasonic AD converter; the single chip microcomputer is connected with the output end of the memory to acquire frequency shift of sound waves passing through an object; the single chip microcomputer is connected with the switch control circuit.

Preferably, the clock output end of the crystal oscillation tube is connected with the single chip microcomputer.

Preferably, the output end of the memory is further connected with a timer, the output end of the timer is connected with the single chip microcomputer, and one input end of the timer is connected with the single chip microcomputer.

Preferably, the single chip microcomputer is connected with the switch control circuit.

Preferably, the switch control circuit comprises a relay and a switch, and the single chip microcomputer is connected with the relay.

Preferably, in the photodetection circuit: the three photoelectric sensors are respectively connected with three photoelectric AD converters, and the output ends of the three photoelectric AD converters are connected with the input end of the singlechip;

in the ultrasonic sensor control circuit: the clock output end of the crystal oscillation tube is connected with the single chip microcomputer; one output end of the singlechip, the control circuit, the ultrasonic sensor, the ultrasonic AD converter and the memory are sequentially connected; one output end of the memory is connected with the single chip microcomputer, and the other output end of the memory is connected with the timer; the output end of the timer is connected with the single chip microcomputer, and one input end of the timer is connected with the single chip microcomputer;

the switch control circuit comprises a relay and a switch, and the other output end of the single chip microcomputer, the relay and the switch are sequentially connected.

The utility model discloses a theory of operation is: the photoelectric sensor utilizes photoelectric effect, and a light-emitting device are arranged in the photoelectric sensor. If an object passes through the photoelectric sensor, the photoelectric sensor sends a signal, the signal passes through an AD converter to be converted into a digital quantity, and an obtained result is input into the singlechip. The single chip microcomputer is used for determining whether an object passes through the periphery. Then the data processed by the singlechip are sent to a control circuit, and the control circuit controls the ultrasonic sensor to be turned on. The ultrasonic sensor starts working, the measured signal is converted into a digital signal through the AD converter, the digital signal is sent to the memory, and the memory is sent to the singlechip to judge whether the Doppler effect exists. If the transverse frequency shift is generated, judging that the object passes through and the automatic door is not opened; if the frequency shift is not the transverse frequency shift, the single chip sends a signal to the timer and closes the relay, the timer is started, and the relay is opened after a period of time.

The utility model discloses utilize the Doppler effect to judge the direction of motion of object to this reduces the condition that the automatically-controlled door triggers by mistake. And a photoelectric sensor is added, so that the working time of the ultrasonic sensor is reduced, and the automatic door has a good effect on the automatic door which is free of people entering for a long time.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale.

In the drawings:

fig. 1 is a schematic diagram of a sensor switching circuit according to an embodiment of the present invention;

Detailed Description

As shown in FIG. 1, the utility model discloses sensor switch circuit with human moving direction of intelligent recognition sets up in the automatically-controlled door, can survey the space in the predetermined range around the automatically-controlled door. The utility model discloses a detection means comprises photoelectric detection and ultrasonic detection. The sensor switching circuit mainly includes: a photoelectric detection circuit 16, an ultrasonic sensor control circuit 17, and a switch control circuit 18;

the photo detection circuit 16 includes a plurality of photo sensors that detect a predetermined range in front and rear of the automatic door. The photoelectric sensor utilizes photoelectric effect, and a light-emitting device are arranged in the photoelectric sensor. The plurality of photoelectric sensors are distributed at different positions, so that the detection coverage is most suitable. In the embodiment shown in the figures, the number of photosensors is three, respectively: a first photosensor 1, a second photosensor 2, and a third photosensor 3. The AD converters connected with the first photoelectric sensors are respectively as follows: a first AD converter 4, a second AD converter 5, and a third AD converter 6. The output end of the first photoelectric sensor 1 is connected with the input end of the first AD converter 4, the output end of the second photoelectric sensor 2 is connected with the input end of the second AD converter 5, and the output end of the third photoelectric sensor 3 is connected with the input end of the third AD converter 6.

The output end of the first AD converter 4 is connected with the second input end 8b of the singlechip 8, the output end of the second AD converter 5 is connected with the second input end 8c of the singlechip 8, and the output end of the third AD converter 6 is connected with the second input end 8d of the singlechip 8. The three photoelectric sensors are used for detecting the periphery all the time, if an object passes through the three photoelectric sensors, the photoelectric sensors send signals, the signals are converted into digital quantity through the AD converter, and the obtained results are input into the single chip microcomputer. The singlechip judges whether objects pass through the front and the back of the automatic door or not according to the data of the photoelectric AD converter.

The ultrasonic sensor control circuit 17 includes: singlechip 8, control circuit 9, ultrasonic sensor 10, fourth AD converter 11, memory 12, timer 13. The clock output end of the crystal oscillation tube 7 is connected with the first clock input end 8a of the singlechip 8. The first output end 8e of the single chip microcomputer 8 is connected with the input end of the control circuit 9, and the output end of the control circuit 9 is connected with the input end of the ultrasonic sensor 10. The single chip microcomputer processes data and judges whether an object passes through. If an object passes through, the control circuit sends a signal to the ultrasonic sensor, and then the ultrasonic sensor is started. An input of the ultrasonic sensor 10 is connected to an input of a fourth AD converter 11. An output of the fourth AD converter 11 is connected to an input of the memory 12. After the ultrasonic sensor is started, the passing of an object is detected, the analog quantity of the passing process of the object is converted into digital quantity, and the obtained information enters the memory.

The first output end 12b of the memory 12 is connected with the sixth input end 8g of the singlechip 8. The data from the ultrasonic sensor 10 is transmitted to the single chip microcomputer 8 for processing. The single chip microcomputer 8 can judge whether the ultrasonic data has transverse frequency shift, if the transverse frequency shift occurs, it is judged that the object only passes by, and the automatic door is not opened; otherwise, the automatic door is controlled to be opened.

A second output 12c of the memory 12 is connected to a first input 13a of the timer 13. The output end of the timer 13 is connected with the fifth input end 8f of the singlechip 8. A second input end 13b of the timer 13 is connected with a third output end 8i of the singlechip 8. When the single chip microcomputer 8 judges that the automatic door needs to be opened, the single chip microcomputer 8 sends a signal to the timer 12 to serve as opening timing, so that the time for opening the automatic door can be ensured to allow an object to pass through. After a certain time, the timer 12 sends a closing signal to the single chip microcomputer, so that the automatic door is closed after an object passes through the automatic door.

The switch control circuit 18 is composed of a relay 14 and a switch 15. The input end of the relay 14 is connected with the second output end 8i of the single chip microcomputer 8, and the output end of the relay 14 is connected with the input end of the switch 15. The relay is closed after receiving the command of the single chip microcomputer, the switch is switched on, and the automatic door is opened. The relay receives the order of the singlechip to open, release the switch, and the automatically-controlled door closes promptly.

In a particular application: AT present, three photoelectric sensors, an ultrasonic sensor and an AD converter are available, wherein the model of the AD converter is AD9288, the model of a singlechip is STM32F070F6P6, the model of a timer is ICM7555, the model of a memory is AT93C66B, and the model of a relay is JZC-23F (4132).

First, three different orientation light sensors are always in operation. If no object is present around, the entire circuit except the photosensor does not work; if the light sensor detects that someone is approaching, a signal is sent to the AD9288, changing the analog signal into a digital signal. AD converter AD9288 with data transmission to singlechip STM32F070F6P6, singlechip STM32F070F6P6 receive AD 9288's data, just send instruction to control circuit, give signal to ultrasonic sensor by control circuit again, open ultrasonic sensor.

If a person approaches and moves to the side of the automatic door directly, the ultrasonic sensor sends data to the memory AT93C66B through the AD converter AD9288, and sends the data to the singlechip STM32F070F6P6 through the memory AT93C66B to analyze the data. The single chip microcomputer judges the frequency shift form of the object and finds that the object is not the transverse frequency shift. The singlechip STM32F070F6P6 sends a control command to the timer ICM7555, and the timer ICM7555 starts to count time; meanwhile, the single chip microcomputer STM32F070F6P6 sends a control command to the relay JZC-23F (4132), the relay attracts a control switch, and the automatic door is opened. After a certain time, the timer sends a command to the single chip microcomputer, the single chip microcomputer STM32F070F6P6 sends a control command to the relay JZC-23F (4132), the relay releases the control switch, and the automatic door is closed.

If a person approaches the ultrasonic sensor, but the ultrasonic sensor detects that the frequency is shifted transversely, namely, the ultrasonic sensor moves parallel to the automatic door, the ultrasonic sensor sends data to a memory AT93C66B through an AD converter AD9288, and sends the data to a singlechip STM32F070F6P6 through a memory AT93C66B to analyze the data. The lateral frequency shift displayed by the Doppler effect does not act on the relay, and the automatic door does not act.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. The utility model provides a sensor switch circuit of human moving direction of intelligent recognition which characterized in that sets up sensor switch circuit in automatic door, includes: the ultrasonic detection circuit comprises a photoelectric detection circuit, an ultrasonic sensor control circuit and a switch control circuit;

2. The sensor switch circuit of claim 1, wherein a clock output of the crystal oscillator transistor is coupled to the single-chip microcomputer.

3. The sensor switch circuit of claim 1, wherein the output of the memory is further connected to a timer, the output of the timer is connected to the single-chip microcomputer, and one input of the timer is connected to the single-chip microcomputer.

4. The sensor switch circuit of claim 3, wherein the switch control circuit comprises a relay and a switch, and the single chip is connected to the relay.

5. The sensor switch circuit of claim 1,

in the photoelectric detection circuit: the three photoelectric sensors are respectively connected with three photoelectric AD converters, and the output ends of the three photoelectric AD converters are connected with the input end of the singlechip;