KR890002619Y1 - Whistle of replying for signal machine - Google Patents

Abstract

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Description

Beacon in response to whirlwind

1 is a circuit diagram of the present invention.

2 is an exemplary view showing a state of use of the present invention.

* Explanation of symbols for main parts of the drawings

(A): Speaker circuit (B): Amplification circuit

(C): Comparison circuit (D): Signal operation time control circuit

(E): Oscillation circuit

The present invention forms a signal that can sound audible frequency by operating by a whirlwind sound and connects it together to a key ring so that when the user does not know where the key is left after using it, the signal sounds in response. It's about a beacon that responds to a whirlwind that lets you instantly know the location of the rear key.

After using a car key or various keys in the home, you often forget where you left it, and then try to use it after you do not know it well, especially in the case of small daily necessities. It is hard to find every time you write because you don't know what you put in, and the more forgetful you are in a complicated social life, the more frequent this phenomenon becomes.

The present invention corrects this problem, and when it blows a whirlwind, it automatically sounds an electronic signal as if responding to the whirlwind so that it can audibly announce the position where it is known. A circuit, a transistor amplification circuit, a comparison circuit that compares and sorts only a whistle sound signal, and an IC oscillation circuit that oscillates by this signal. When connected together, or if you don't know where the key is, when the wind blows, the sound is amplified by a transistor amplifier through a microphone, and the noise signal is removed by the comparison circuit among the amplified received signals along with other noises. And selects only the wind signal and makes the IC oscillate by this signal. When the operation start and at about 7-8 seconds wool rear instant set of audio frequency signals in advance to have devised able to know the location of the key by drawing illustrate this in detail with the following:

Known pizos are coupled to transistor Q ₁ with resistors R ₁ and ₂ to speaker circuit A to resistors R ₃ , ₁₂ , _{4, 13, 5} , ₁₄ , ₆ , ₁₆ ) And amplification circuit (B) consisting of (C ₁ , ₄ , ₅ , ₆ ) and transistors (Q ₂ , ₃ , ₄ , ₅ ) to amplify the audio signal received from the speaker circuit, R ₁₈₎ and capacitor (C _5), a transistor (Q _7), a resistance (R ₁₅₎ and capacitor (C _9), a with the transistor (Q _8), resistors (R _{7, 20)} and a capacitor (C ₁₀ comprising a) And a transistor comparison circuit (C) consisting of a transistor (Q ₆ ) with a diode (D ₁ ) and a resistor (R ₁₇ ) and a capacitor (C ₇ ) to the output of the transistor amplification circuit (B) with noise. IC ₁ circuit including noise (R ₈ ), condenser (C ₃ ) and diode (D ₂ ) to remove noise from the amplified voice signal and to select only the wind signal (about 4.5KHZ ± 500HZ). resistance (R ₉₎ and Output end of the condenser (C ₁₁₎ and a diode (D _3), one (IC ₂₎ two transistors (Q _{6, 7)} of the comparison circuit to the input terminal of the IC ₁ in the time constant circuit signal time control circuit (D) hayeoseo combined with a side by side connected to the resistor (R _{10, 11)} and a capacitor (C ₂₎ and IC _3, to the IC ₄ to connect the output end of the signal timing control circuit to the IC ₃ input terminal of the oscillator circuit (e) composed of a resistance (R ₉₎ The oscillation circuit (e) can be operated for a time set by the time constant of the condenser (C ₁₁ ) and the output terminal of the oscillation circuit (e) is connected to the speaker circuit (a) through the diode (4) and the resistor (R ₂₁ ). Connected to a pizo wire so that the signal of oscillating audible frequency can be sounded for a set time with a speaker, and this circuit is installed in a small case (1) so that speaker sound can be heard through the speaker hole (2). Connect to the next key ring (3), etc., and use the random key (4) with other items It is.

The present invention, as shown in FIG. 2, is difficult to find because the car key or any article used always is connected with the whirling signal, and it is not known where the key is placed anywhere. When the wind blows, the wind blows the case 1 through the speaker hole 2 to the pizo speaker, which transmits the voice signal as well as the transistors Q ₂ , ₃ , ₄ , and so on. ₅ ) amplified by the multi-stage amplification circuit (b) and then applied via the capacitor (C ₇ ) to the base side of each transistor (Q ₇ , ₈ ) of the comparison circuit consisting of transistors (Q ₆ , ₇ , ₈ ), respectively. . The noise in the simultaneous transistor Q ₈ is that the noise signal is removed by the function of the transistor among the voice signals input to the transistor Q ₇ , and only the audio signal of the wind noise of about 4.5KHZ is applied to one input terminal of the IC ₁ . The voice signal from which the signal is removed is removed by the quaternary transistor Q ₆ , and only the voice signal of the whirlwind sound is applied to the other input terminal of the IC ₁ . Again removing the noise signal from the IC ₁ circuit completely and only once the wind signal the IC ₂ for being applied to the IC ₂ operates the time control circuit (D) is a time constant set by the resistance (R ₉₎ and a capacitor (C _11), for example about The operation signal is applied to one input terminal of IC ₃ of the oscillation circuit (e) for 7-8 seconds, and during the set time, the IC oscillation circuit (e) oscillates and transmits the audible frequency signal through the diode D ₄ to the speaker circuit. (A) The signal that can be audibly heard from the speaker (Pizo) can be used to know the location of the key, etc., which is a small combination of speaker circuit, amplification circuit, comparison circuit and oscillation circuit. Since it is stored inside the case and connected to any key ring or ring of other items, it can be used while being carried together, so if you don't know where you put it after using the key, blow it. In response to the sound of the wind, an audible frequency signal sounds for 7-8 seconds immediately, so you can see the location of the key light on the spot immediately.If you attach this signal to a child as well as a portable object, When it is not found where your child is, the wind blows and responds with a signal, so you can check the child's location and use it for various purposes.

Claims (1)

A multistage amplification circuit (B) of transistors Q ₂ , ₃ , ₄ , and ₅ is connected to a speaker circuit (a) consisting of a typical pizo speaker (pizo) and a transistor (Q ₁ ), and a transistor ( A comparison circuit (C) which removes noise other than a round wind voice signal consisting of Q ₇ , ₈ , and ₉ is connected, and at the output terminal of the comparison circuit (C), a signal operating time control circuit consisting of IC ₁ and IC ₂ ( D) Signaling device that responds to the sound of the wind that can be sounded by the speaker by combining the IC ₂ and IC ₃ oscillating circuits (e) to oscillate an audio frequency signal in response to the sound of the wind.