CN201278520Y

CN201278520Y - Microwave induction switch

Info

Publication number: CN201278520Y
Application number: CNU2008202129341U
Authority: CN
Inventors: 武光杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-15
Filing date: 2008-10-15
Publication date: 2009-07-22
Anticipated expiration: 2018-10-15

Abstract

A microwave inductive switch utilizing a microwave mobile sensor to detect the movement of a human body comprises an on-off power supply circuit, a voltage stabilizing circuit, a microwave mobile sensor, a signal amplifying circuit, a single chip microcomputer control circuit, a relay output circuit and the like. The microwave inductive switch utilizes 110V or 220V AC power supply or 60-20V DC power supply to work, adopts a 86*86 mm power supply bottom case, is conveniently installed and can replace other switches; and the working frequency of the microwave mobile sensor is 10-12 GHz. The utility model has reliable performance, low power consumption, convenient installation and wide voltage range due to the utilization of both AC and DC power supplies, and can be applied to the fields of electricity-saving illumination of electric appliances and corridors, automatically inductive electricity-saving illumination of underground parking lots, inductive control of indoor and outdoor equipment, and the like.

Description

Microwave inductive switch

Technical field

The utility model relates to the microwave motion sensor application technology, relates in particular to microwave inductive switch.

Background technology

At present, the automatic inductive switch of human body is mainly used in corridor economize on electricity illumination and indoor security protection etc. mainly based on pyroelectricity (PIR) transducer.Because pyroelectric sensor is to air ambient variations in temperature sensitivity, air flows is also very big to the influence of transducer, therefore the induction product of pyroelectric sensor class is mainly used in indoor, if be used for outdoor, then the misoperation probability is very high, even cisco unity malfunction, the use of human induction switch is limited to.Microwave motion sensor then is a kind of transducer that utilizes doppler principle to come human body to move, transducer itself produces the signal of a fixed frequency, outwards transmit by transmitting antenna, when human body is mobile in investigative range, accept antenna and can receive that one exists the signal of frequency difference with tranmitting frequency, this signal with transmit through after the mixing detection, produce the Doppler signal of a low frequency, by analyzing and processing, realize the human body purpose of induction automatically to Doppler signal.Microwave motion sensor belongs to the microwave signal transmitter and receiver, the mobile variation of air ambient air temperature and current exerts an influence minimum to it, the signal frequency of microwave motion sensor is at the Ku wave band, frequency is higher, extraneous frequency is also very little to its interference, therefore come human body to move with microwave motion sensor at present, it is one of method that improves product reliability, the utility model microwave inductive switch adopts the microwave motion sensor design, can satisfy the requirement of human body indoor and outdoor induction, the performance of inductive switch is greatly improved.

Summary of the invention

The utility model provides a kind of microwave inductive switch with the microwave motion sensor design, box designed at the bottom of this switch adopted standard 86 types, can use and exchange or DC power supply, circuit part comprises: power supply input and relay output, Switching Power Supply, stabilized voltage power supply, microwave motion sensor, the induced signal amplifier, distance of reaction adjustment, photo resistance adjustment, but the induced signal repeated trigger time is adjusted, A/D single-chip microcomputer etc., this microwave inductive switch can replace human body infrared induction switch and standard machinery formula switch fully, and it is energy-conservation to be widely used in indoor and outdoor, economize on electricity and human body are responded to control etc. automatically.

To achieve the above object of the invention, the utility model proposes following technical scheme:

A kind of microwave inductive switch, it is characterized in that: this inductive switch is made up of microwave motion sensor and two circuit boards of letter processing and amplifying, two circuit boards are contained in the plastic casing of 53mm*48mm*26mm, by concavo-convex buckle, kayser and is in the center position of switch panel on standard 86mm*86mm switch panel.The signal processing circuit plate of microwave motion sensor, top components and parts are provided with: LDO Regulator, microwave motion sensor power supply are connected location staight needle, Switching Power Supply with signal, exchange or dc supply input, distance of reaction is adjusted, CDS photo resistance, but the adjustment of induced signal repeated trigger time, the A/D single-chip microcomputer, output relay, the microwave motion sensor signal amplifies IC, electronic devices and components such as relay output end.

Preferably, described circuit board also is provided with and exchanges or dc supply input and relay output end are positioned under the circuit board.

Preferably, but described circuit board also is provided with distance of reaction adjustment resistance R L and repeated trigger time adjustment resistance R T is positioned at directly over the circuit board, and there is photo resistance CDS the centre.

Preferably, described circuit board also is provided with microwave motion sensor and is connected and fixed by location staight needle soldering, in the center of circuit board and be in the circuit board another side.

As can be seen from the above technical solutions, the utility model is with Switching Power Supply, LDO Regulator, microwave motion sensor, Switching Power Supply exchanges or dc supply input, distance of reaction is adjusted, CDS photo resistance, but the adjustment of induced signal repeated trigger time, the A/D single-chip microcomputer, output relay, the microwave motion sensor signal amplifies IC, and electronic devices and components such as relay output end are designed to circuit board, are contained on the standard type 86*86mm switch panel, form microwave inductive switch, can use to exchange or DC power supply work, can replace other induction switches and standard machinery switch, interchangeability is strong, easy to use, can be extensively owing to the indoor and outdoor energy-saving device, induction door, fields such as industrial electrical equipment or equipment automatization control.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the fundamental block diagram of the utility model microwave inductive switch.

Fig. 2 is the electrical schematic diagram of the utility model microwave inductive switch.

Fig. 3 is the contour structures and the components and parts location drawing of the utility model microwave inductive switch circuit board.

Fig. 3 is the contour structures and the explanation of the components and parts location drawing of the utility model microwave inductive switch circuit board:

Among the figure: circuit board overall dimension 50mm*45mm (1), top components and parts are provided with: LDO Regulator (2), the microwave motion sensor power supply is connected location staight needle (3) Switching Power Supply (4) with signal, exchange or dc supply input (5) distance of reaction adjustment (6), CDS photo resistance (7), but the repeated trigger time is adjusted (8), A/D single-chip microcomputer (9), output relay (10), the microwave motion sensor signal amplifies IC (11), relay output end electronic devices and components such as (12).

Embodiment

Below in conjunction with specific embodiment the technical solution of the utility model is described.

As shown in Figure 1-Figure 3:

The operation principle of microwave inductive switch:

When using AC power,,, produce the DC power supply of 6V behind the rectifying and voltage-stabilizing, be input to LDO Regulator through Switching Power Supply by power input terminal A, B input AC 110/220V voltage; When using DC power supply, by the power supply of power input terminal A, B input direct current 6-24V, to LDO Regulator, the direct voltage of being exported 5V by LDO Regulator HT7550 is for the microwave inductive switch circuit working.Microwave motion sensor M drives Q1 control by single-chip microcomputer HT46R47, regularly, directional transmissions microwave signal, in the distance of reaction of setting, there is the people to move, microwave motion sensor M senses movable signal, after this signal amplifies through the two-stage calculation amplifier of being made up of LM358, is input to 8 pin of single-chip microcomputer HT46R47, after the single-chip microcomputer analyzing and processing, 4 pin output 5V high level signal by the adhesive of Q3 control output relay, drives loaded work piece by C, D terminal.Adjust RL resistance, can change the distance of reaction of microwave inductive switch, make distance of reaction adjustable in 0.3-8 rice.Adjust RT resistance, but can change induced signal repeated trigger delay time, make the relay output delay time adjustable in second at 3-300.Meet photo resistance CDS, the may command microwave inductive switch is not worked daytime, has only work under the very dark environment of night or light.

1 induced signal produces and signal amplifies enforcement:

Single-chip microcomputer HT46R47 generation frequency 0.5K duty ratio is 3% negative pulse square wave, control Q1 conducting, provide power supply to microwave motion sensor M, produce frequency 0.5K duty ratio simultaneously and be 1% positive pulse square wave, control Q2 conducting, the signal that microwave motion sensor M is surveyed is input in the discharge circuit of back, and by LM358 and peripheral R, the C element is formed signal amplification circuit.

Microwave motion sensor M is under single-chip microcomputer HT46R47 control, the microwave signal of timing directional transmissions 10-12Ghz, in the detection range of setting, there is not human body to move, have only faint noise signal to be coupled in the amplifying circuit of back during the Q2 conducting, signal amplitude of variation after the amplification is very little, and after Chip Microcomputer A/D conversion, analyzing does not have mobile human body in the investigative range.In the detection range of setting, move when sensing human body, the signal of microwave motion sensor M output is after Q2 leads, and after C6 filtering, 3 pin that are coupled to LM358 first order amplifier by C7 and R3 carry out the signal amplification.Amplifying signal is exported by 1 pin, and through C12, R10 is coupled to 6 pin of second level amplifier, carries out after second level signal amplifies, and outputs to 8 pin of single-chip microcomputer HT46R47 by IC 7 pin, and signal is handled through Chip Microcomputer A/D conversion post analysis, by relay output control signal.

2 single-chip microcomputer work and relay output control are implemented:

HT46R47 is the technical grade single-chip microcomputer, has 4 passage A/D conversion and 9 accuracy.The utility model uses the RC vibration, finishes frequency of oscillation 8Mhz by 13 pin R17 and the C18 of HT46R47.12 pin are 5V positive sources, 9 pin power cathodes.11 pin are single-chip microcomputer resetting pins, meet R16 and C17 and are used for the single-chip microcomputer electrification reset.

After the induced signal of microwave motion sensor M amplifies through the LM358 dual-stage amplifier, be input to single-chip microcomputer 8 pin, carry out the A/D conversion, but single-chip microcomputer is also according to the distance of reaction of adjustable resistance RL setting and the induced signal repeated trigger time of adjustable resistance RT setting, and the photosensitivity of external CDS photo resistance, after the analysis-by-synthesis, determine whether to export control signal.Single-chip microcomputer 4 pin are 5V high-level control signal delivery outlet, and signal is input to the Q3 base stage by R18, drive relay output by Q3, drive load.

3 distance of reaction adjustment are implemented:

6 pin of single-chip microcomputer HT46R47 are connected to 1M adjustable resistance RL, adjust RL, and its resistance value is changed between 1-1M ohm, and this resistance value is after Chip Microcomputer A/D conversion, and the distance of reaction of controlled microwave inductive switch is adjustable in 0.3-8 rice.

But 4 induced signal repeated trigger times were adjusted and implement:

7 pin of single-chip microcomputer HT46R47 are connected to 1M adjustable resistance RT, adjust RT, and its resistance value is changed between 1-1M ohm, and this resistance value is after Chip Microcomputer A/D conversion, and the relay output delay time of controlled microwave inductive switch is adjustable in second at 3-300.

5 photo resistance CDS adjust enforcement:

5 pin of single-chip microcomputer HT46R47 are connected to the CDS photo resistance, the light at daytime and night changes, make it change resistance between 200K-2M ohm, this resistance value is after Chip Microcomputer A/D conversion, the may command microwave inductive switch is not worked by day or under the bright environment of light, only works under the very dark environment of night or light, thereby reaches the purpose of saves energy, break J3 works switch daytime and night.

As shown in Figure 3, the position distribution of each components and parts is among the utility model embodiment:

Interchange or dc supply input 5 and relay output end 12 are positioned under the circuit board.

But distance of reaction adjustment 6 and repeated trigger time are adjusted 8 and are positioned at directly over the circuit board, and CDS photo resistance 7 is arranged in the middle of two components and parts.

LDO Regulator 2 is positioned at the circuit board upper left corner.

Switching Power Supply 4 is positioned at position on the lower side, center, the circuit board left side.

Output relay 10 is positioned at position on the lower side, the positive center of circuit board, and the right has the microwave motion sensor signal to amplify IC (11), and there is A/D single-chip microcomputer (9) in the upper right corner.

Microwave motion sensor is connected and fixed by location staight needle 3 solderings, in the center of circuit board and be in the circuit board another side.

The above embodiment has only expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.

Claims

1, a kind of microwave inductive switch, it is characterized in that: this inductive switch is made up of microwave motion sensor and two circuit boards of letter processing and amplifying, two circuit boards are contained in the plastic casing of 53mm*48mm*26mm, by concavo-convex buckle, kayser and is in the center position of switch panel on standard 86mm*86mm switch panel; The overall dimension 50mm*45mm (1) of the signal processing circuit plate of microwave motion sensor, top components and parts are provided with: LDO Regulator (2), the microwave motion sensor power supply is connected location staight needle (3) with signal, Switching Power Supply (4), exchange or dc supply input (5), distance of reaction is adjusted (6), CDS photo resistance (7), but the induced signal repeated trigger time is adjusted (8), A/D single-chip microcomputer (9), output relay (10), the microwave motion sensor signal amplifies IC (11), relay output end electronic devices and components such as (12); When using AC power,,, be input to LDO Regulator (2) through producing the DC power supply of 6V behind Switching Power Supply (4) rectifying and voltage-stabilizing by power input terminal A, B input AC 110/220V voltage; When using DC power supply, by the power supply of power input terminal A, B input direct current 6-24V, to LDO Regulator (2), the direct voltage of being exported 5V by LDO Regulator HT7550 is for the microwave inductive switch circuit working; Microwave motion sensor M is controlled by A/D single-chip microcomputer (9), regularly, directional transmissions microwave signal, in the distance of reaction of setting, there is the people to move, microwave motion sensor M senses movable signal, after this signal amplifies through the two-stage calculation amplifier of being made up of LM358, is input to 8 pin of single-chip microcomputer HT46R47, after the single-chip microcomputer analyzing and processing, 4 pin output 5V high level signal by the adhesive of Q3 control output relay (10), drives loaded work piece by C, D terminal; Adjust RL resistance, can change the distance of reaction of microwave inductive switch, make distance of reaction adjustable in 0.3-8 rice; Adjust RT resistance, but can change induced signal repeated trigger delay time; Make the relay output delay time adjustable in second at 3-300; Meet photo resistance CDS, the may command microwave inductive switch is not worked daytime, has only work under the very dark environment of night or light.

2, microwave inductive switch according to claim 1 is characterized in that: this microwave inductive switch interchange or dc supply input (5) and relay output end (12) are positioned under the circuit board; Distance of reaction adjust (6) but and the repeated trigger time adjust (8) and be positioned at directly over the circuit board, and there is CDS photo resistance (7) these two components and parts centres; LDO Regulator (2) is positioned at the circuit board upper left corner; Switching Power Supply (4) is positioned at position on the lower side, center, the circuit board left side; Output relay (10) is positioned at position on the lower side, the positive center of circuit board, and the right has the microwave motion sensor signal to amplify IC (11), and there is A/D single-chip microcomputer (9) in the upper right corner; Microwave motion sensor is connected and fixed by location staight needle (3) soldering, in the center of circuit board and be in the circuit board another side.