CN203422827U

CN203422827U - Rain alarm and automatic control device

Info

Publication number: CN203422827U
Application number: CN201320571857.XU
Authority: CN
Inventors: 黄月华
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-09-16
Filing date: 2013-09-16
Publication date: 2014-02-05
Anticipated expiration: 2023-09-16

Abstract

The utility model relates to a rain alarm and automatic control device. The rain alarm and automatic control device is characterized by comprising a 6V direct-current power supply, a rain drop detection circuit, a phase inversion and filtration circuit, and a buzzer drive and relay control circuit, wherein the enhancement-type N-channel field-effect tube VT2 in the buzzer drive and relay control circuit chooses an IRFZ22 type. The weather forecast does not work as for specific areas and specific time periods, such as the rainy season. It often rains in spring and summer, and particularly when it rains at night of sound sleep, the sudden rain wets the outdoor drying clothes and grains, which brings great trouble to production and life of the people. According to the rain alarm and automatic control device, the electronic technology is used for monitoring whether it rains or not; once the rain drop is detected, buzzing is sounded at once to inform people that it rains and people are reminded to take effective measures at once.

Description

Rain and report to the police and automaton

Technical field

The utility model belongs to application of electronic technology field, is about a kind of rainy warning and automaton.

Background technology

People understand weather condition, are mainly to listen to, watch weather predicting program by timing.But the regional extent of weather forecast overview is wide and the period is whole day 24 hours, and just seem helpless for concrete region and concrete period weather forecast, especially rain and occur in the night that people sleep soundly, for example: plum rain season, and spring, summertime rain and often occur, there is sudden rainfall meeting and drench the clothing of outdoor airing, drench the cereal of airing, bring very burden to people's productive life.Rainy warning described in the utility model and automaton, it utilizes electronic technology to monitor constantly, and whether the situation of raining occurs, and the normally opened contact that utilizes DC relay J can be controlled automatic stow mechanism operation, realizes while raining and can automatically pack up clothing.

Once rain, warning and automaton detect raindrop, will be immediately with buzzer, tell you rainy information, remind you to hasten to adopt an effective measure.Rain to report to the police and the circuit of automaton have simple in structure, power consumption is little, raindrop Detection accuracy high.

Below describe rainy warning described in the utility model and automaton related relevant technologies content in implementation process in detail.

Utility model content

Goal of the invention and beneficial effect: weather forecast just seems helpless for concrete region and concrete period, for example: plum rain season, and spring, summertime rain and often occur, especially rain and occur in the night that people sleep soundly, there is sudden rainfall meeting and drench the clothing of outdoor airing, drench the cereal of airing, bring very burden to people's productive life.Rainy warning described in the utility model and automaton, it utilize electronic technology to monitor constantly whether the situation of raining occurs.Once rain, warning and automaton detect raindrop, will be immediately with buzzer, tell you rainy information, remind you to hasten to adopt an effective measure.

Circuit working principle: in the circuit diagram of warning and automaton that rains, JYQ is rain receiver.Rain receiver JYQ is connected to open air with soft lead-in wire, and is fixed on outdoor appropriate location.

When rain receiver JYQ is in dry air, rain receiver JYQ two ends disconnect substantially, in cut-off state, enhancement mode N channel field-effect pipe VT2 is also in cut-off state less than setovering to make NPN transistor VT1, and hummer HA and DC relay J do not work without electricity;

When rain receiver JYQ runs into raindrop, just there has been resistance at the two ends of rain receiver JYQ, its resistance is along with raindrop increase gradually and diminish rapidly, make so NPN transistor VT1 have biasing circuit and conducting, electrochemical capacitor C1 starts charging, the base voltage of NPN transistor VT1 rises, when voltage rising reaches the forward voltage of NPN transistor VT1, enhancement mode N channel field-effect pipe VT2 is conducting simultaneously also, hummer HA must establish by cable and begin to pipe, remind people to rain in outside, meanwhile the coil of DC relay J also electric work, its normally opened contact can be used for controlling relevant electromechanical equipment.

The grid G of enhancement mode N channel field-effect pipe VT2 is connected to electrochemical capacitor C1, and its effect is filtering, fixed ampllitude and delay, prevents that rain receiver JYQ from receiving small water droplet and volatilize rapidly and fail to report rainy phenomenon.

Technical scheme: rain and report to the police and automaton, it comprises that 6V direct supply, raindrop testing circuit, paraphase and filtering circuit, hummer drive and control relay circuit, is characterized in that:

Raindrop testing circuit: it is comprised of rain receiver JYQ and resistance R 1, the anodal VCC of a termination circuit of rain receiver JYQ, one end of the other end connecting resistance R1 of rain receiver JYQ, another termination paraphase and filtering circuit of resistance R 1;

Paraphase and filtering circuit: it is comprised of NPN transistor VT1, resistance R 2, electrochemical capacitor C1, the base stage of NPN transistor VT1 meets rain receiver JYQ by resistance R 1, the anodal VCC of collector connection circuit of NPN transistor VT1, one end of emitter connecting resistance R2 of NPN transistor VT1 and the positive pole of electrochemical capacitor C1, the negative pole connection circuit ground GND of the other end of resistance R 2 and electrochemical capacitor C1;

Hummer drives and control relay circuit: it is comprised of enhancement mode N channel field-effect pipe VT2, hummer HA and DC relay J, the drain D of enhancement mode N channel field-effect pipe VT2 connects one end of negative pole and the DC relay J coil of hummer HA, the anodal VCC of other end connection circuit of the positive pole of hummer HA and DC relay J coil, the source S connection circuit ground GND of enhancement mode N channel field-effect pipe VT2;

The positive pole of 6V direct supply is connected with circuit anode VCC, and the negative pole of 6V direct supply is connected with circuit ground GND.

Accompanying drawing explanation

Accompanying drawing is the embodiment circuit working schematic diagram that the utility model provides rain warning and an automaton.

Embodiment

According to rainy warning shown in the drawings and automaton circuit working schematic diagram and accompanying drawing explanation, and according to annexation between components and parts in the each several part circuit described in utility model content, and the components and parts technical parameter described in embodiment requires and circuit production main points are implemented to realize the utility model.Below in conjunction with embodiment, correlation technique of the present utility model is further described.

The technical parameter of components and parts and selection requirement

VT1 is NPN transistor, and the model of selecting is 2SC9013, requires β >=140;

VT2 is enhancement mode N channel field-effect pipe, and the model of selecting is IRFZ22; Enhancement mode N channel field-effect pipe VT2 under conducting state, between the source S of enhancement mode N channel field-effect pipe VT2 and drain D pressure drop very little, its pressure drop can be ignored substantially;

Resistance R 1 is 1/4 metalfilmresistor, and its resistance is 18K Ω;

Resistance R 2 is 1/4 metalfilmresistor, and its resistance is 8.2K Ω;

C1 is electrochemical capacitor, and its capacity is 220 μ F/16V;

HA is hummer, selects solderable and indoor design to have audio generating circuit, and operating voltage is 6V;

J is DC relay, and the DC voltage of coil is 5V, and the contact rated power of DC relay J requires to be greater than 250V/3A.

Circuit production main points and circuit debugging

The making of rain receiver JYQ: the outward appearance of rain receiver JYQ is interdigital shape, use the one side epoxy copper foil plate of 10 centimetres of 8 cm x, every 2 millimeters of sharp pocket knives of use or scratch the Copper Foil of 1 mm wide with breaking saw blade, the flexible circuit conductor of 1 2～4 meters of then burn-oning respectively at one side epoxy copperplate two ends; When rain receiver JYQ settles fixedly out of doors, the one side epoxy copper foil plate one of rain receiver JYQ should be placed facing up;

The circuit structure of the rainy warning of cause and automaton is fairly simple, as long as the electronic devices and components performance of generally selecting is intact, and the components and parts annexation in accompanying drawing is welded to specifications, physical connection line and welding quality are after careful inspection is correct, circuit of the present utility model does not need to carry out any debugging substantially, and connecting 6V direct supply can work;

Resistance R 1 is for the sensitivity of regulating device; Resistance R 2 is for finely tuning the volume of hummer HA;

Utilize the normally opened contact of DC relay J to control to receive clothing mechanism and automatically move, realize the object that can automatically pack up clothing while raining.

Claims

1. rain and report to the police and an automaton, it comprises that 6V direct supply, raindrop testing circuit, paraphase and filtering circuit, hummer drive and control relay circuit, is characterized in that:

Described raindrop testing circuit is comprised of rain receiver JYQ and resistance R 1, the anodal VCC of a termination circuit of rain receiver JYQ, one end of the other end connecting resistance R1 of rain receiver JYQ, another termination paraphase and filtering circuit of resistance R 1;

Described paraphase and filtering circuit are comprised of NPN transistor VT1, resistance R 2, electrochemical capacitor C1, the base stage of NPN transistor VT1 meets rain receiver JYQ by resistance R 1, the anodal VCC of collector connection circuit of NPN transistor VT1, one end of emitter connecting resistance R2 of NPN transistor VT1 and the positive pole of electrochemical capacitor C1, the negative pole connection circuit ground GND of the other end of resistance R 2 and electrochemical capacitor C1;

Described hummer drives and control relay circuit is comprised of enhancement mode N channel field-effect pipe VT2, hummer HA and DC relay J, and the model that enhancement mode N channel field-effect pipe VT2 selects is IRFZ22; The drain D of enhancement mode N channel field-effect pipe VT2 connects one end of negative pole and the DC relay J coil of hummer HA, the anodal VCC of other end connection circuit of the positive pole of hummer HA and DC relay J coil, the source S connection circuit ground GND of enhancement mode N channel field-effect pipe VT2;

The positive pole of described 6V direct supply is connected with circuit anode VCC, and the negative pole of 6V direct supply is connected with circuit ground GND.