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Alarm system with acousto-optic early-warning design

An alarm system, acousto-optic technology, applied in the fields of optics, acoustics, and electronic science, can solve the problems of inability to play early warning, unusable, too simple design, etc., and achieve the effect of low power consumption, simple structure, scientific and reasonable working principle

Inactive Publication Date: 2018-06-01
CHENGDU CAIZHI SHENGYOU TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Alarm circuit, and a device or equipment or circuit that will automatically alarm when there is a hazard or exceeds a predetermined threshold after detection, and the existing alarm circuit or equipment is often too simple in design to provide early warning effect; or use high cost to design an extremely powerful alarm circuit, so that this circuit can be intelligently used in places such as fire protection, linkage control, etc., but cannot be used in places such as reminders of pests and small animals

Method used

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  • Alarm system with acousto-optic early-warning design

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Effect test

Embodiment 1

[0025] An alarm system designed with sound and light early warning, designed a relatively simple structure, but with early warning and alarm function, using sound and light synchronous reminder to alarm system, when the sound is not enough to expel pests or pests in the protected area In the case of small animals, the abruptness of light can be used to scare away pests or small animals. Its scientific and reasonable working principle and practical functionality are loved by the majority of users, such as figure 1 As shown, the following structure is specially provided: including a light early warning circuit and a sound early warning circuit, the light early warning circuit is connected to the sound early warning circuit; the light early warning circuit includes a resistor R6, a light emitting diode LED1, a light emitting diode LED2, a resistor R7 and an NPN Transistor Q4, the sound warning circuit is respectively connected to the first end of the resistor R6 and the first end ...

Embodiment 2

[0027] This embodiment is further optimized on the basis of the above-mentioned embodiments. Further, in order to better realize the present invention, sound mode can be used for early warning, such as figure 1 As shown, the following structure is particularly provided: the sound warning circuit is mainly composed of a piezoelectric conversion circuit, a time base circuit, and an audio processing circuit, the piezoelectric conversion circuit is connected to the time base circuit, and the time base circuit is connected to the audio processing circuit. Circuit; the first end of the resistor R6 and the first end of the resistor R7 are both connected to the audio processing circuit.

Embodiment 3

[0029] This embodiment is further optimized on the basis of the above-mentioned embodiments, further to better realize the present invention, such as figure 1 As shown, the following structure is particularly provided: the piezoelectric conversion circuit includes a piezoelectric ceramic buzzer HTD, an NPN transistor Q1, a resistor R2 and an electrolytic capacitor C1, and the first ends of the piezoelectric ceramic buzzer HTD are respectively Connect the second end of the resistor R1 to the base of the NPN transistor Q1, the second end of the piezoelectric ceramic buzzer HTD is connected to the emitter of the NPN transistor Q1; the collector of the NPN transistor Q1 is respectively connected to the resistor R1 The second end, the first end of the resistor R2 are connected to the positive pole of the electrolytic capacitor C1, and the first end of the resistor R2, the negative pole of the electrolytic capacitor C1 and the emitter of the NPN transistor Q1 are all connected to the...

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Abstract

The invention provides an alarm system with the acousto-optic early-warning design. The alarm system comprises a light early-warning circuit and a sound early-warning circuit, wherein the light early-warning circuit is connected with the sound early-warning circuit, the light early-warning circuit comprises a resistor R6, a light emitting diode LED1, a light emitting diode LED2, a resistor R7 anda transistor Q4, the sound early-warning circuit is respectively connected with the first end of the resistor R6 and the first end of the resistor R7, the second end of the resistor R6 is connected with the first end of the transistor Q4 through the light emitting diode LED1 and the light emitting diode LED2 which are connected in series, the second end of the transistor Q4 is connected with the second end of the resistor R7, and the third end of the transistor Q4 is grounded. A system with relatively simple structure and an early-warning alarm function for giving an alarm by utilizing a soundand light synchronous reminding mode is designed. Under the condition that the sound is insufficient to expel pests or small animals in the protected region, the pests or the small animals can be frightened by the abruptness of the light rays.

Description

technical field [0001] The invention relates to the technical fields of electronic science, acoustics, optics, etc., and specifically relates to an alarm system designed with sound and light early warning. Background technique [0002] The 555 timer (NE555 time base chip) has low cost and reliable performance. It only needs a few external resistors and capacitors to realize pulse generation and conversion circuits such as multivibrator, monostable trigger and Schmitt trigger. [0003] It includes two voltage comparators, three equivalent series resistors, an RS flip-flop, a discharge tube T and a power output stage. It provides two reference voltages VCC / 3 and 2VCC / 3. [0004] The function of the 555 timer is mainly determined by two comparators. The output voltages of the two comparators control the state of the RS flip-flop and discharge tube. Add a voltage between the power supply and the ground. When pin 5 is suspended, the voltage of the non-inverting input terminal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B7/06
CPCG08B7/06
Inventor 不公告发明人
Owner CHENGDU CAIZHI SHENGYOU TECH LLC
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