CN201838141U

CN201838141U - High-voltage dangerous electricity reminding device

Info

Publication number: CN201838141U
Application number: CN2010205928381U
Authority: CN
Inventors: 林美蓉
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-11-05
Filing date: 2010-11-05
Publication date: 2011-05-18
Anticipated expiration: 2020-11-05

Abstract

The utility model relates to a high-voltage dangerous electricity reminding device, which comprises a sensing trigger circuit, a single-chip control circuit, a voice alarm circuit, an alarm bell drive circuit and a keyboard circuit. Signals collected by the sensing trigger circuit are transmitted to the single-chip control circuit, the single-chip control circuit controls outputs to the voice alarm circuit and the alarm bell drive circuit, and the switching function of the keyboard circuit is set in programs of the single-chip control circuit. The device adopts the human body sensing trigger circuit to utter voice alarms and make the alarm bell flash so as to remind people of high-voltage risks and prevent the people from getting close. Moreover, the high-voltage dangerous electricity reminding device has a simple structure, high practicality and stable and reliable performance.

Description

Keep Clear-High Voltage electric alarm set

Technical field

The utility model relates to electronic circuit field, particularly relates to a kind of Keep Clear-High Voltage electric alarm set.

Background technology

Annual China gets an electric shock and dies countlessly because of high pressure, and Sign Board has partly all been taked in TV university so Keep Clear-High Voltage, but because child is fond of play, or the old man is illiterate, high pressure electrocute die, wounded or disabled ratio still is quite a lot of.

The utility model content

The purpose of this utility model provides a kind of employing human body sensing trigger circuit, sends audio alert prompting Keep Clear-High Voltage electric alarm set.

The technical scheme that the utility model adopted is such: Keep Clear-High Voltage electric alarm set, comprise sensor trigger circuit, single chip machine controlling circuit, voice alarm circuit, alarm bell driving circuit, keyboard circuit, the signal conveys that described sensor trigger circuit is gathered is to single chip machine controlling circuit, single chip machine controlling circuit control output voice alarm circuit and alarm bell driving circuit, the switching function of keyboard circuit is provided with by the single chip machine controlling circuit internal processes.

Described sensor trigger circuit is made up of induced electricity pole piece TX, RD627 infrared sensor IC4, oscillatory circuit, switching tube Q2.

Described voice alarm circuit is connected to 9561 alarm chip IC2 by resistance R 8 series connection triode Q4 outputs, after capacitor C 6 is coupled to the amplification of LM386 note amplifier IC3 internal audio frequency, amplify through LM386 note amplifier IC3 output capacitance C7 coupling again, promote hummer Y and send audio alert.

By adopting the aforementioned techniques scheme, the beneficial effects of the utility model are: this device adopts the human body sensing trigger circuit, sends audio alert, alarm bell light flash, Keep Clear-High Voltage with people's alert device, and beyond this point, it is simple in structure, practical, stable and reliable for performance.

Description of drawings

Fig. 1 is the structural diagrams intention of the utility model embodiment;

Fig. 2 is the circuit theory diagrams of the utility model embodiment.

Embodiment

Further specify the utility model below in conjunction with the drawings and specific embodiments.

As Fig. 1, shown in Figure 2, Keep Clear-High Voltage, and electric alarm set comprises sensor trigger circuit 1, single chip machine controlling circuit 2, voice alarm circuit 3, alarm bell driving circuit 4, keyboard circuit 5, the signal conveys that described sensor trigger circuit 1 is gathered is to single chip machine controlling circuit 2, single chip machine controlling circuit 2 control output voice alarm circuit 3 and alarm bell driving circuits 4, the switching function of described keyboard circuit 5 is provided with by single chip machine controlling circuit IC1 internal processes, described sensor trigger circuit 1 is by induced electricity pole piece TX, RD627 infrared sensor IC4, oscillatory circuit, switching tube Q2 forms, induced electricity pole piece TX connects the 1st of RD627 infrared sensor IC4,2 pin, the 6th pin output of RD627 infrared sensor IC4 connects oscillatory circuit, oscillatory circuit is by capacitor C 2 resistance in series R1 and triode Q1, and the output of the collector of triode Q1 connects resistance R 2, capacitor C 3 is formed.Described voice alarm circuit 3 is connected to the 3rd pin of 9561 alarm chip IC2 by resistance R 8 series connection triode Q4 outputs, be coupled to the 3rd pin of LM386 note amplifier IC3 through capacitor C 6, after LM386 note amplifier IC3 internal audio frequency amplifies, amplify through LM386 note amplifier IC3 output capacitance C7 coupling again, promote hummer Y and send audio alert.Described alarm bell driving circuit 4 is by resistance R 7 series connection triode Q3 and relay J 1, and relay J 1 connects switch J1-1, and switch J1-1 output connects alarm bell.K switch 1-K4 pull-up resistor R1-R4 in parallel forms keyboard circuit 5, is used for self check, the setting of the switching function such as alert that resets, disappears, and this function is finished by the setting of single chip machine controlling circuit IC1 internal processes.

Near induced electricity pole piece TX nobody the time, triode Q1 and switching tube Q2 all are in cut-off state, and 6 pin of RD627 infrared sensor IC4 are low level, and A point current potential also is an electronegative potential, single chip machine controlling circuit IC1 internal control program does not have any output, and illustrating does not have human body near power equipment.As human body when the induced electricity pole piece TX, the oscillator oscillatory work, emitter outputting oscillation signal from triode Q1, this oscillator signal is through semiconductor diode D rectification, make switching tube Q2 conducting, 2 pin of RD627 infrared sensor IC4 become low level by high level, 6 pin of RD627 infrared sensor IC4 become high level by low level, this moment, A point current potential also was input to the 3rd pin I/O end of single chip machine controlling circuit IC1 for noble potential, through the computing of single chip machine controlling circuit IC1 internal processes, divide two-way output, the first via makes triode Q4 conducting by the 2nd pin output low level signal of single chip machine controlling circuit IC1 through resistance R 8, therefore 9561 alarm chip IC2 obtain supply voltage, the 2nd pin output audio alert signal of 9561 alarm chip IC2, be coupled to the 3rd pin of LM386 note amplifier IC3 through capacitor C 6, after internal audio frequency amplifies, amplify through the 5th pin output capacitance C7 of LM386 note amplifier IC3 coupling again and promote hummer Y and send audio alert " Keep Clear-High Voltage; please don't be close "; The 21st pin output low level signal of secondary route single chip machine controlling circuit IC1 makes triode Q3 conducting through resistance R 7, makes relay J 1 adhesive, and switch J1-1 makes alarm bell get the electroluminescence flicker by becoming normally closed point normal battle simultaneously.

More than show and described ultimate principle of the present utility model and principal character and advantage thereof; the technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the explanation just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall in claimed the utility model scope, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. Keep Clear-High Voltage electric alarm set, it is characterized in that: comprise sensor trigger circuit (1), single chip machine controlling circuit (2), voice alarm circuit (3), alarm bell driving circuit (4), keyboard circuit (5), the signal conveys that described sensor trigger circuit (1) is gathered is to single chip machine controlling circuit (2), single chip machine controlling circuit (2) control output voice alarm circuit (3) and alarm bell driving circuit (4), the switching function of described keyboard circuit (5) is by single chip machine controlling circuit (2) internal processes setting.

2. Keep Clear-High Voltage electric alarm set according to claim 1, it is characterized in that: described sensor trigger circuit (1) is made up of induced electricity pole piece TX, RD627 infrared sensor IC4, oscillatory circuit, switching tube Q2.

3. Keep Clear-High Voltage electric alarm set according to claim 1, it is characterized in that: described voice alarm circuit (3) is connected to 9561 alarm chip IC2 by resistance R 8 series connection triode Q4 outputs, after capacitor C 6 is coupled to the amplification of LM386 note amplifier IC3 internal audio frequency, amplify through LM386 note amplifier IC3 output capacitance C7 coupling again, promote hummer Y and send audio alert.