CN211236300U - Multi-sensor switch circuit capable of preventing false triggering - Google Patents

Abstract

The utility model provides a prevent multi-sensor switch circuit that mistake was triggered sets up multi-sensor switch circuit on the automatically-controlled door. The sensing module includes: the gravity sensor and the laser sensor are respectively connected with the input end of the ADC; the output end of the ADC is connected with a storage module, and gravity sensor data and laser sensor data related to an initial environment are stored in the storage module; the output end of the storage module is connected with the microprocessor; the output end of the microprocessor is connected with the control processing module; the output end of the control processing module is respectively connected with the gravity sensor and the laser sensor; the output end of the microprocessor is also connected with a switch arranged on the automatic door. The utility model discloses can solve the problem that goods or child triggered the auto-induction door by mistake, improve the security of automatically-controlled door.

Description

Multi-sensor switch circuit capable of preventing false triggering

Technical Field

The utility model relates to an automatic control technology especially relates to a prevent multi-sensor switch circuit of mistake trigger.

Background

With the improvement of living standard and the improvement of scientific and technical level, people have more and more great demand on intelligent life. Accordingly, a plurality of intelligent and humanized hardware is developed. The device is a small device commonly used in daily life. The remote controller and the desk lamp are small, and the water heater and the refrigerator are large, so that the switch is inevitably installed. The intelligent life needs to continuously improve the switch, so that the induction switch can be operated.

The inductive switches on the market at present mainly comprise: infrared inductive switch, microwave inductive switch, ultrasonic inductive switch, piezoelectric inductive switch, electromagnetic inductive switch, capacitance inductive switch, etc. Each of these inductive switches has various advantages. After the advanced inductive switches are installed on some household appliances or intelligent homes, the life of people is greatly enriched. However, even with such a large number of inductive switches, the demands of people in life cannot be fully met, especially in some specific situations. For example, some automatic doors' inductive switch is intelligent inadequately, and some children play in front of the door or when goods triggered the automatic inductive door by mistake, the automatic inductive door also can open immediately.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent the multi-sensor switch circuit that triggers by mistake can solve the problem that goods or child triggered the auto-induction door by mistake.

Particularly, the utility model provides a prevent multi-sensor switch circuit that mistake was triggered sets up on the automatically-controlled door multi-sensor switch circuit includes: the device comprises a sensing module, a storage module and a signal processing module;

the sensing module includes: the gravity sensor and the laser sensor are respectively connected with an ADC (analog-to-digital converter), the ADC is connected with a storage module, and gravity sensor data and laser sensor data related to an initial environment are stored in the storage module;

the signal processing module includes: the output end of the storage module is connected with the microprocessor; the output end of the microprocessor is connected with the control processing module; the output end of the control processing module is respectively connected with the gravity sensor and the laser sensor; the output end of the microprocessor is also connected with a switch arranged on the automatic door.

Preferably, the signal processing module further includes: and the output end of the counter is connected with the microprocessor.

Preferably, the single counting time of the counter is 6 s.

The utility model discloses a multisensor switch circuit has combined gravity sensor and laser sensor. And when the microprocessor judges the triggering, the microprocessor integrates multiple groups of data from the gravity sensor and the laser sensor. First, the microprocessor can retrieve the gravity sensor data and the laser sensor data of the initial environment in the memory module. The microprocessor can also acquire the gravity sensor data and the laser sensor data of the current environment, and at the moment, the counter starts to time. The microprocessor is then also able to acquire the gravity sensor data and the laser sensor data of the environment at the end of the timekeeping. By comprehensively comparing the multiple groups of data, the microprocessor can judge whether the pedestrian normally passes in front of the automatic door, the child playing in a moving mode or the false triggering of other objects. Therefore, the utility model discloses can solve goods or child effectively and trigger the problem of automatic induction door by mistake, improve the security of automatic induction door.

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 multi-sensor switching circuit that is protected from false triggering according to an embodiment of the present invention;

fig. 2 is a schematic view of an embodiment of the present invention applied to an automatic door;

Detailed Description

As shown in FIG. 1 and FIG. 2, the utility model discloses prevent multi-sensor switch circuit of spurious triggering, set up on automatically-controlled door. The gravity sensor 1 is arranged in front of and behind the door. When a person or an object is located in front of or behind the door, the gravity sensor 1 determines the weight of the object at the sensing position. The laser sensor 2 is disposed above or on the door frame side. When a person or an object is in a position in front of or behind the door, the laser sensor 2 can determine whether the object has reached a sufficient height.

The sensing module includes: the device comprises a gravity sensor 1, a laser sensor 2, a first ADC (analog-to-digital converter) 3 and a second ADC 4. The output end of the gravity sensor 1 is connected with the input end of the first ADC analog-to-digital converter 3 through a preprocessing circuit. The output end of the receiving module in the laser sensor 2 is connected with the input end of the second ADC analog-to-digital converter 4 through the preprocessing circuit.

The storage module 7 includes: a first register group 5 and a second register group 6. The output of the first ADC analog-to-digital converter 3 is connected to the input of a first register bank 5. The output of the second ADC analog-to-digital converter 4 is connected to the input of a second register bank 6. The memory module 7 has therein gravity sensor data and laser sensor data relating to the initial environment, i.e. the initial data before and after the door without any object/person.

The signal processing module includes: control processing module 8, counter 10, microprocessor 9. The output end of a storage module 7 consisting of the first register group 5 and the second register group 6 is connected with the first input end of the microprocessor 9. An output of the counter 10 is connected to a second input of the microprocessor 9.

A first output of the microprocessor 9 is connected to a switch 11. A second output of the microprocessor 9 is connected to an input of the control processing module 8. The output end of the control processing module 8 is connected with the input end of the transmitting module of the laser sensor 2, and the output end of the control processing module 8 is also connected with the input end of the gravity sensor 1.

At the present moment, the gravity sensor 1 passes through the preprocessing circuit and then enters the input end of the first ADC analog-to-digital converter 3 to be input into the first ADC analog-to-digital converter 3, and then passes through the output end of the first ADC analog-to-digital converter 3 to be input into the first register group 5. The microprocessor 9 can call the initial environment data and the current time data in the first register group 5 to perform the identification processing. Wherein, the gravity sensing is used for judging the weight of the object at the sensing position.

At the current moment, the transmitting module in the laser sensor 2 is controlled to transmit laser, the laser is reflected and received by the receiving module in the laser sensor 2, and the received echo time difference passes through the output end of the receiving module in the laser sensor 2. After passing through the preprocessing circuit, the input end of the second ADC analog-to-digital converter 4 is input into the second ADC analog-to-digital converter 4. And then input into the second register bank 6 via the output of the second ADC analog-to-digital converter 4. The microprocessor 9 can call the initial environment data and the current time data in the second register group 6 to perform the identification processing. Wherein, the laser sensor is used for judging whether the object reaches enough height.

The microprocessor 9 compares at least four groups of data transmitted by the gravity sensor 1 and the laser sensor 2 to judge whether the switch 11 can be opened. When the data sent by the two receivers to the microprocessor 9 indicate that a person is present at the same time, the first output of the microprocessor 9 will send out the data that opens the switch 11.

Meanwhile, the control end of the microprocessor 9 controls the counter 10 to start counting, and after the counting is finished, the microprocessor 9 repeats the above process to judge whether the four groups of data transmitted by the gravity sensor 1 and the laser sensor 2 pass through. If no one is judged, the microprocessor 9 sends a command of closing the switch; if the person is judged to pass through the control device, the steps are continuously repeated until no person is judged, and the microprocessor 9 sends a command for closing the switch 11.

In a particular application: a gravity sensor, a laser transmitter, a microprocessor TMS320F28335PGFA, two registers AT45DB081B, a laser receiver, two AD9634, a control switch and a counter are selected. The peripheral I2C interface realizes the communication between microprocessor TMS320F28335PGFA, laser receiver and gravity sensor.

The whole system is applied to an automatic induction door as shown in fig. 2. When the system supplies power and works, the output end of the microprocessor TMS320F28335PGFA is connected with the input end of the control processing module and is in a normally open command. The output end of the control processing module is connected with the input end of the laser transmitter to drive the laser transmitter to transmit laser. If no person exists, the emitted laser is reflected by the wall surface and then received by the laser receiver, and the received echo time difference passes through the output end of the laser receiver and enters the corresponding input end of the AD9634 to be input into the AD9634 after passing through the preprocessing circuit. The output via the AD9634 is then input into the register AT45DB081B via the input of the corresponding register AT45DB 081B. The microprocessor TMS320F28335PGFA recalls the data in the register AT45DB081B to perform recognition processing, and AT this time, laser sensing determines that no person is present. If a person stands AT the gravity sensing position shown in fig. 2, the reflected person is received by the laser receiver, the received echo time difference passes through the output end of the laser receiver, passes through the preprocessing circuit, enters the input end of the AD9634 and is input into the corresponding AD9634, then passes through the output end of the AD9634 and is input into the register AT45DB081B through the input end of the corresponding register AT45DB081B, the microprocessor TMS320F28335PGFA recalls the data in the register AT45DB081B to perform identification processing, and the laser sensing judges that the person is present AT this time. The laser sensor is used for judging the height of the object.

The normally open gravity sensor receives the weight of the gravity sensing position in the figure 2, after the weight is changed into a voltage signal through the preprocessing circuit, the voltage signal enters the corresponding AD9634 input end and is input into the AD9634, then the voltage signal is input into the register AT45DB081B through the AD9634 output end and the register AT45DB081B input end, the microprocessor TMS320F28335PGFA calls the data in the register AT45DB081B again for identification processing, and the weight of the gravity sensing position object AT the moment is judged. The gravity sensor is used for judging whether the object placed at the sensing position reaches the standard in weight.

When laser sensing, gravity sensing all sensed someone and exist, microprocessor TMS320F28335PGFA just judges for someone is present, and the time could send the command to control switch, opens the auto-induction door. For example, when the microprocessor TMS320F28335PGFA judges that the height of the person in front of the door is more than 150cm according to the data transmitted from the laser sensor, and judges that the weight of the person in front of the door is more than 30KG according to the data transmitted from the gravity sensor, the microprocessor TMS sends a command to the control switch to open the automatic induction door, so that the possibility that a small child passes through the automatic induction door is isolated, and the automatic induction door cannot be opened when only goods are placed at the automatic induction door.

Meanwhile, the control end of the microprocessor TMS320F28335PGFA controls the counter to start counting for 6s, and after the counting is finished, the microprocessor TMS320F28335PGFA repeats the above process to judge whether the two groups of data sent by the laser sensor and the gravity sensor pass through by people. If no one is judged, the microprocessor TMS320F28335PGFA sends a command of closing the switch; and if the person passes through the TMS, continuously repeating the steps until the person does not pass through the TMS320F28335PGFA, and sending a command for closing the control switch by the microprocessor TMS320F28335 PGFA.

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 (3)

1. The utility model provides a prevent multi-sensor switch circuit that mistake triggered which characterized in that sets up on the automatically-controlled door multi-sensor switch circuit includes: the device comprises a sensing module, a storage module and a signal processing module;

the sensing module includes: the gravity sensor and the laser sensor are respectively connected with an ADC (analog-to-digital converter), the ADC is connected with the storage module, and gravity sensor data and laser sensor data related to an initial environment are stored in the storage module;

the signal processing module includes: the output end of the storage module is connected with the microprocessor; the output end of the microprocessor is connected with the control processing module; the output end of the control processing module is respectively connected with the gravity sensor and the laser sensor; the output end of the microprocessor is also connected with a switch arranged on the automatic door.

2. The multi-sensor switch circuit of claim 1, wherein the signal processing module further comprises: and the output end of the counter is connected with the microprocessor.

3. The multi-sensor switching circuit according to claim 2, wherein the single count time of the counter is 6 s.

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