CN2739759Y

CN2739759Y - Electronic whistle

Info

Publication number: CN2739759Y
Application number: CN 200420083929
Authority: CN
Inventors: 朱文津
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-09-08
Filing date: 2004-09-08
Publication date: 2005-11-09
Anticipated expiration: 2014-09-08

Abstract

The utility model discloses an electronic whistle which includes an emitting part and a receiving part. The emitting part is an emitting circuit with a switch and is used to emit the wireless signal. The receiving part includes a receiving circuit, a power control circuit, an oscillating circuit, a propelling circuit and a buzzer. The receiving circuit is used to receive the wireless signal caused by the emitting circuit and exports the signal to the power control circuit and makes the power control circuit supply the power for the oscillating circuit and the propelling circuit. The oscillating circuit is used to generate the low-frequency square wave signal and exports the low-frequency square wave signal to the propelling circuit. The propelling circuit generates the acoustic frequency oscillating signal with interchanged frequency to make the buzzer send out the whistle. The utility model uses the electronic whistle to replace the traditional whistle. The electronic whistle does not need to blow by the mouth, which solves the sanitary problem. The emitting and the receiving parts solve the problem that the electronic whistle with the prior art is inconvenient to use. The emitting part can be made into a small one and can be covered on the finger. So, the electronic whistle can really replace the whistle.

Description

The electronics whistle

Technical field

The utility model belongs to a kind of electronic simulation birdie generator.Simulate a kind of device that sends original whistle true to nature by application of electronic technology.

Background technology

Existing whistle, all be traditional type by manually directly using the mouth blown work, convert mechanical rotation to the birdie signal.Owing to must directly contact object with the oral cavity during work of this whistle, unhygienic, easily cause bacterium to enter in the body by the oral cavity, communicate illness, thus influence people's health.And the people is also relatively harder when blowing a whistle, and air-flow is unbalanced, and sound is on the low side, thereby influences the birdie quality.

In order to address this problem, once the someone had designed the electronics whistle, it as publication number 2129027 Chinese patent " the electronics whistle ", the dual time base circuit that comprises shell, loudspeaker, battery, electric source filter circuit, forms by low-frequency square-wave oscillator and audio frequency oscillator, produce low-frequency square-wave signal voltage by the low-frequency square-wave oscillator, the control audio oscillator produces the audio oscillation of frequency height alternate, drives loudspeaker through RC wave filter, coupling capacitance, power amplifier again and sends the simulation whistle.Because of volume is big, hold very inconveniently in the hand, thereby be difficult to substitute traditional whistle.

The utility model content

The technical problems to be solved in the utility model proposes a kind of new electronics whistle, can not only solve the antihygienic problem of whistle, also can solve existing electronics whistle inconvenient problem with use, can extensively substitute traditional whistle.

The utility model comprises radiating portion and receiving unit.Described radiating portion is the radiating circuit of a belt switch, is used for launching wireless signal.Described receiving unit comprises receiving circuit, power control circuit, oscillatory circuit, promotion circuit and hummer.Receiving circuit is used for receiving the wireless signal that radiating circuit produces, and outputs signal to power control circuit and gives oscillatory circuit and promote power supply by it.Oscillatory circuit is used for producing low-frequency square-wave signal and exports to the promotion circuit, promotes the audio oscillator signal that circuit produces frequency height alternate, makes described hummer send whistle.

The utility model replaces traditional whistle with the electronics whistle, need not blow by mouth, has solved hygienic issues.Because of with transmitting and receiving two parts, solved electronics of the prior art whistle inconvenient problem with use.Radiating portion can be done very for a short time, is enclosed within finger and goes up just passablely, thereby can really substitute whistle.

Description of drawings

Fig. 1 is the functional-block diagram of the utility model circuit;

Fig. 2 is the remote control circuit schematic diagram among embodiment of the utility model;

Fig. 3 is the receiving circuit schematic diagram among embodiment of the utility model;

Fig. 4 is the power control circuit schematic diagram among embodiment of the utility model;

Fig. 5 is the oscillatory circuit among embodiment of the utility model and promotes circuit theory diagrams.

Embodiment

The utility model is described in further detail by a concrete example below in conjunction with accompanying drawing.

Figure 1 shows that functional-block diagram of the present utility model, the electronics whistle comprises radiating portion and receiving unit two parts.Radiating portion is the radiating circuit of a band keyswitch.Receiving unit comprises receiving circuit, power control circuit, oscillatory circuit, promotion circuit and hummer.Radiating circuit and receiving circuit are all used powered battery.Battery can adopt rechargeable battery.When pressing the transmitter power keyswitch, radiating circuit just sends wireless signal, wireless signal by receiving circuit automatic reception arrival self-emission device, produce output signal and enter power control circuit, give oscillatory circuit and promote circuit supply, oscillatory circuit just produces a low-frequency square-wave signal voltage and outputs to the promotion circuit, promotes the oscillating voltage signal that circuit produces the variation of a frequency height alternate cycle again, makes hummer send a kind of whistle true to nature.

Be a kind of embodiment of radiating circuit as shown in Figure 2.Radiating circuit is that chip SCTX2BS and peripheral circuit are formed.S1 is a signal emission keyswitch, and chip U1 adopts SCTX2BS, and modulation signal of emission under the R1 effect by R2, under the carrier signal effect that Y1, Q1 produce, is sent by L2.

Be a kind of embodiment of receiving circuit as shown in Figure 3.Receiving circuit comprises a high frequency receiving circuit and demodulation chip U2 and peripheral circuit thereof, and U2 adopts SCRX2FS.Under the effect of the high frequency receiving circuit of forming by L3, L4, Q2, C6, C7 etc., receive modulation signal, be coupled to U2 by R5, C8, again by U2 demodulation output voltage control signal, J102B-3 is the voltage control signal output terminal.

Be a kind of embodiment of power control circuit as shown in Figure 4.J102B among the figure is a receiving circuit shown in Figure 3.Power control circuit mainly is made of triode and relay.S2 is a power control switch.Receive the wireless signal of transmitter as receiving circuit J02B after, produce output voltage signal, by triode Q3 pilot relay RLY conducting, OUT end output voltage is given oscillatory circuit and is promoted circuit supply.In the present embodiment, power supply adopts rechargeable battery, comprises also in this programme that DC seat J1 and diode D2 form the battery charge built-up circuit.Whether in running order in order in time to understand the utility model, also comprise power supply indication LED lamp in the utility model, i.e. D4.

As shown in Figure 5, be oscillatory circuit of the present utility model and a kind of embodiment that promotes circuit.OUT in the IN map interlinking 4 among this figure.Oscillatory circuit mainly comprises C21, R20, VR1 and integrated circuit U3, and U3 can adopt CD40106.U3 produces low-frequency square-wave signal voltage under the effect of C21, R20, VR1, be added to the Q7 base stage through R22, C22 and R21, high level makes the Q7 conducting, and low level is ended Q7, makes the Q5 conducting during Q7 conducting, Q6 conducting when Q7 ends, make the Q4 conducting during Q6 conducting, by the ON time of C19 and C20 control Q4 and Q5, Q4 and Q5 alternate conduction and end like this, make 1 and 3 pin of T1 alternately produce concussion, promote hummer and send loud whistle with time utmost point.Potentiometer VR1 scalable low-frequency square-wave signal voltage is to the degree of modulation of the oscillator signal of promotion circuit generation.Hummer can adopt ceramic piezo.

The utility model electronics whistle is provided with two switches, triggering keyswitch S1 on the telepilot and the toggle switch S2 on the power control circuit.The opening power toggle switch S2 of elder generation during work controls the break-make of whistle then by the triggering keyswitch S1 on the telepilot.

To those skilled in the art, can adopt multiple replacement scheme respectively because of the radiating circuit in the utility model, receiving circuit, power control circuit, oscillatory circuit, promotion circuit etc.Protection domain of the present utility model is not subjected to the restriction of the embodiment of this instructions introduction.

Claims

1, a kind of electronics whistle is characterized in that, comprises radiating portion and receiving unit; Described radiating portion is the radiating circuit of a belt switch, is used for launching wireless signal; Described receiving unit comprises receiving circuit, power control circuit, oscillatory circuit, promotion circuit and hummer; Described receiving circuit is used for receiving the wireless signal that radiating circuit produces, and outputs signal to described power control circuit and gives described oscillatory circuit and promote circuit supply by it; Described oscillatory circuit is used for producing low-frequency square-wave signal and exports to described promotion circuit, and described promotion circuit produces the audio oscillator signal of frequency height alternate, makes described hummer send whistle.

2, the described electronics of claim 1 whistle is characterized in that, described radiating circuit is that chip SCTX2BS and peripheral circuit are formed.

3, the described electronics of claim 1 whistle, it is characterized in that, described receiving circuit comprises a high frequency receiving circuit and demodulation chip SCRX2FS and peripheral circuit thereof, and described high frequency receiving circuit demodulates voltage control signal by the RC which couple to demodulation chip after receiving modulation signal.

4, the described electronics of claim 1 whistle is characterized in that, described power control circuit is made of triode and relay.

5, the described electronics of claim 1 whistle is characterized in that, described oscillatory circuit is that low-frequency square-wave signal produces circuit.

6, the described electronics of claim 5 whistle is characterized in that, described low-frequency square-wave signal produces circuit and is made of chip CD40106 and peripheral circuit.

7, the described electronics of the arbitrary claim of claim 1 to 6 whistle is characterized in that receiving unit also comprises charging circuit.