CN210202154U

CN210202154U - Microwave induction device

Info

Publication number: CN210202154U
Application number: CN201920138111.7U
Authority: CN
Inventors: Xiwang Lan; 兰希旺
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-01-28
Filing date: 2019-01-28
Publication date: 2020-03-27
Anticipated expiration: 2029-01-28

Abstract

The utility model discloses a microwave induction device, which comprises a power circuit, a microwave induction circuit, a control circuit, a functional circuit and electrical equipment; the power circuit is respectively connected with the microwave induction circuit, the control circuit, the functional circuit and the electrical equipment; the microwave induction circuit is connected with the control circuit, then the control circuit is connected with the functional circuit, and finally the functional circuit is connected with the electrical equipment; compared with a conventional light control circuit and a conventional sound control circuit, the microwave induction device has the advantages of wider application range, better judgment capability and high cost performance, can be installed on a lighting device or household electrical equipment to bring great convenience to the daily life of people, and improves the life quality of people.

Description

Microwave induction device

Technical Field

The utility model relates to a microwave response technique, in particular to microwave induction system.

Background

Most of common lamps and lanterns or household electrical equipment are controlled by human operation, for example, a common switch is controlled by the internet of things technology, and the step of manual control cannot be avoided even if the control is performed by modes such as network and Bluetooth at present. Although many electrical devices are equipped with sensors for performing primary intelligent recognition, the most common light-operated lamps and sound-operated lamps in our daily life are common examples, and at present, motion sensing technology is still applied to people's daily life, and especially, the most popular automatic driving technology is applied to motion sensing technology in hardware level.

The most applied motion sensing technology at present is the microwave sensing technology, which compares the transmitting frequency and the receiving frequency of electromagnetic waves in microwaves by using the doppler principle, if an object moves, the frequency before and after receiving changes, and according to the change, the moving situation of the object can be judged, even the distance, the speed and the acceleration of the object from a transmitting device can be judged. Certainly, for daily application scenes, people can know that an object is close to the scene to meet the needs of people, and further judgment on the scene is not needed.

Compared with the conventional sound control and light control, the microwave induction technology has great advantages, the first judgment is more accurate, for example, the sound control lamp is mostly judged according to the footstep sound of a user, the sensitivity control is difficult to set, the sensitivity is high, sound emitted by the movement of some small animals can be triggered sometimes, even a dog call can be triggered, the sensitivity is low, and the user can not shout two sounds and cannot see the sound. Of course, a sound control lamp capable of recognizing sound frequency to realize sound control function can be used, but the cost is too high. The microwave induction device can judge more accurately, and even can remove part of interference brought by the outside according to the modes such as the height of the induction device. The second universality is stronger, the light control and the sound control are easily interfered by the external environment, the microwave induction technology can not be used under many conditions, and the application range of the microwave induction technology is wider.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims at providing a wide application scope, judge accurate, with low costs microwave induction system.

The utility model provides a microwave induction device, which comprises a power circuit, a microwave induction circuit, a control circuit, a functional circuit and electrical equipment; the power supply circuit is respectively connected with the microwave induction circuit, the control circuit, the functional circuit and the electrical equipment; the microwave induction circuit is connected with the control circuit, then the control circuit is connected with the functional circuit, and finally the functional circuit is connected with the electrical equipment; the control circuit comprises a main control unit, a sensitivity adjusting circuit for adjusting the triggering distance of the microwave induction circuit, a light control circuit and a time delay adjusting circuit; the functional circuit is a voltage division circuit, and the output power is controlled by the voltage division circuit, so that the functions of full-power work and partial-power work of the electrical equipment connected with the voltage division circuit are realized; the microwave induction circuit comprises a voltage stabilizing circuit, a filter circuit, a collector circuit board copper foil, a decoupling circuit board antenna, a high-frequency triode, a bias circuit and an LC oscillating circuit; the main control unit is respectively connected with the LC oscillating circuit, the functional circuit, the sensitivity adjusting circuit, the light control circuit and the delay adjusting circuit on the microwave induction circuit; the LC oscillating circuit comprises a loop antenna and a bypass capacitor; the voltage stabilizing circuit is respectively connected with the filter circuit and the bias circuit, after the filter circuit is connected with the copper foil of the collector circuit board, the copper foil of the collector circuit board is further connected with a collector of the high-frequency triode, the bias circuit is respectively connected with the antenna of the decoupling circuit board and the base of the high-frequency triode, an emitter of the high-frequency triode is connected with the LC oscillating circuit, and the LC oscillating circuit is connected with the control circuit; the high frequency triode, the bias circuit and the decoupling circuit board antenna are combined into a signal transmitting circuit, the high frequency triode and the LC oscillating circuit are combined into a signal receiving circuit, and the control circuit outputs high and low levels to control the functional circuit and the electrical equipment after difference frequency of a transmitting signal transmitted by the signal transmitting circuit and a reflected signal received by the signal receiving circuit.

Preferably, the light control circuit is provided with a light dependent resistor which can change its own resistance value according to the illumination intensity in the use scene so as to control the main control unit to work.

Preferably, the power supply circuit comprises mains power and an auxiliary power supply.

The utility model discloses a microwave induction system's beneficial effect does:

Drawings

Fig. 1 is a schematic block diagram of a microwave induction device according to the present invention;

fig. 2 is a schematic block diagram of a microwave control circuit of the microwave induction device of the present invention;

fig. 3 is a schematic block diagram of a control circuit of the microwave induction device of the present invention;

fig. 4 is a circuit diagram of a microwave sensing circuit of the microwave sensing device of the present invention;

fig. 5 is a circuit diagram of a control circuit of the microwave induction device of the present invention;

reference numbers in the figures: 1. commercial power, 2, an auxiliary power supply, 3, a microwave induction circuit, 4, a control circuit, 5, a functional circuit, 6, electrical equipment, 31 a voltage stabilizing circuit, 32, a filter circuit, 33, a collector circuit board copper foil, 34, a bias circuit, 35, a decoupling circuit board antenna, 36, a high-frequency triode, 37, an LC oscillating circuit, 38, a loop antenna, 41, a main control unit, 42, a delay adjusting circuit, 43, a sensitivity adjusting circuit, 43 and a light control circuit.

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 5, an embodiment of the microwave sensing device of the present invention is provided:

referring to fig. 1, a microwave induction apparatus includes a power supply circuit, a microwave induction circuit 3, and a control circuit 4. The power supply circuit is respectively connected with the microwave induction circuit 3, the control circuit 4, the functional circuit 5 and the electrical equipment 6; the microwave induction circuit 3 is connected with the control circuit 4, then the control circuit 4 is connected with the functional circuit 5, and finally the functional circuit 5 is connected with the electrical equipment 6. The power supply circuit comprises a mains supply 1 and an auxiliary power supply, when the power supply circuit works normally, the mains supply 1 supplies power to the subsequent working circuit and charges the auxiliary power supply 2, and when the power supply fails, the auxiliary power supply 2 supplies power to the subsequent working circuit.

Referring to fig. 2 and 4, the microwave induction circuit 3 includes a voltage stabilizing circuit 31, a filter circuit 32, a collector wiring board copper foil 33, a decoupling wiring board antenna 35, a high frequency transistor 36, a bias circuit 34, and an LC oscillator circuit 37. The filter circuit 32 includes capacitors C4, C5, C6 and C7, the bias circuit 34 includes resistors R18, R19 and R20, and the LC oscillator circuit 37 includes a loop antenna 38 and bypass capacitors C9 and C10. The voltage stabilizing circuit 31 is respectively connected with the filter circuit 32 and the bias circuit 34, after the filter circuit 32 is connected with the collector circuit board copper foil 33, the collector circuit board copper foil 33 is further connected with the collector of the high-frequency triode 36, the bias circuit 34 is respectively connected with the decoupling circuit board antenna 35 and the base of the high-frequency triode 36, the emitter of the high-frequency triode 36 is connected with the LC oscillating circuit 37, and the LC oscillating circuit 37 is connected with the control circuit 4; wherein, the high frequency triode 36, the bias circuit 34 and the decoupling circuit board antenna 35 are combined into a signal transmitting circuit, the high frequency triode 36 and the LC oscillating circuit 37 are combined into the signal receiving circuit, and the transmitting signal transmitted by the signal transmitting circuit and the reflected signal received by the signal receiving circuit are transmitted to the main control unit

Referring to fig. 3 and 5, the control circuit 3 includes a main control unit 41, a sensitivity adjusting circuit 43 for adjusting the trigger distance of the microwave sensing circuit, a light control circuit 44 and a delay adjusting circuit 42; the main control unit 41 is respectively connected with the LC oscillating circuit 37, the functional circuit 5, the sensitivity adjusting circuit 43, the light control circuit 43 and the delay adjusting circuit 42 of the microwave induction circuit 3. The main control unit 41 is internally provided with a delay time timer and a blocking time timer, so that the timing delay time can be set only by changing the frequency of an external oscillator, and the function of the delay adjusting circuit 42 is realized. The model of the master control unit 41 is EG 4002.

The functional circuit 5 comprises two voltage-dividing resistors, and the functions of full-power operation and partial-power operation of the electrical equipment 6 connected with the voltage-dividing circuit can be realized by changing the resistance values of the two resistors.

If the transmitted microwave signal encounters a moving object, the reflected wave will have a phase shift, and the loop antenna 38 receives the reflected signal with the phase shift, performs a difference frequency with the transmitted signal, and outputs a low-frequency signal of about 3kHz to 10MHz to the main control unit 41 for amplification. If there is a moving object master unit 41, a high level will be output, and if there is no moving object master unit 41, a low level will be output. The main control unit 41 is further connected to a photo resistor RG1, when the intensity of external light is high, the resistance of the photo resistor RG1 is decreased, so as to decrease the voltage at the VC pin of the main control unit 41, and when the voltage is less than 0.2VDD, the main control unit 41 is disabled, that is, the main control unit 41 continues to output low level. When the light is weak, the resistance of the photo resistor RG1 is increased, so that the voltage at the VC pin of the main control unit 41 is increased to be greater than 0.2VDD, and the main control unit 41 is in a normal operating state. The subsequent circuit controls the functional circuit 5 and the electric device 6 in accordance with the high-low level output from the control circuit 4.

Compared with a conventional light control circuit and a conventional sound control circuit, the microwave induction device has the advantages of wider application range, better judgment capability and high cost performance, can be installed on a lighting device or household electrical equipment to bring great convenience to the daily life of people, and improves the life quality of people.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structural changes made by the contents of the specification and the drawings, or the direct or indirect application in other related technical fields, are included in the same way in the protection scope of the present invention.

Claims

1. A microwave induction device is characterized by comprising a power supply circuit, a microwave induction circuit, a control circuit, a functional circuit and electrical equipment; the power supply circuit is respectively connected with the microwave induction circuit, the control circuit, the functional circuit and the electrical equipment; the microwave induction circuit is connected with the control circuit, then the control circuit is connected with the functional circuit, and finally the functional circuit is connected with the electrical equipment; the control circuit comprises a main control unit, a sensitivity adjusting circuit for adjusting the triggering distance of the microwave induction circuit, a light control circuit and a time delay adjusting circuit; the functional circuit is a voltage division circuit, and the output power is controlled by the voltage division circuit, so that the functions of full-power work and partial-power work of the electrical equipment connected with the voltage division circuit are realized; the microwave induction circuit comprises a voltage stabilizing circuit, a filter circuit, a collector circuit board copper foil, a decoupling circuit board antenna, a high-frequency triode, a bias circuit and an LC oscillating circuit; the main control unit is respectively connected with the LC oscillating circuit, the functional circuit, the sensitivity adjusting circuit, the light control circuit and the delay adjusting circuit on the microwave induction circuit; the LC oscillating circuit comprises a loop antenna and a bypass capacitor; the voltage stabilizing circuit is respectively connected with the filter circuit and the bias circuit, after the filter circuit is connected with the copper foil of the collector circuit board, the copper foil of the collector circuit board is further connected with a collector of the high-frequency triode, the bias circuit is respectively connected with the antenna of the decoupling circuit board and the base of the high-frequency triode, an emitter of the high-frequency triode is connected with the LC oscillating circuit, and the LC oscillating circuit is connected with the control circuit; the high frequency triode, the bias circuit and the decoupling circuit board antenna are combined into a signal transmitting circuit, the high frequency triode and the LC oscillating circuit are combined into a signal receiving circuit, and the control circuit outputs high and low levels to control the functional circuit and the electrical equipment after difference frequency of a transmitting signal transmitted by the signal transmitting circuit and a reflected signal received by the signal receiving circuit.

2. The microwave induction device according to claim 1, wherein the photo-control circuit has a photo-resistor capable of controlling the operation of the main control unit by changing its resistance value according to the illumination intensity in the use scene.

3. A microwave induction device according to claim 1, characterised in that the power supply circuit comprises mains and an auxiliary power supply.