CN102499520A

CN102499520A - Touch alarm of travel suitcase

Info

Publication number: CN102499520A
Application number: CN2011103213218A
Authority: CN
Inventors: 黄宇嵩
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-10-21
Filing date: 2011-10-21
Publication date: 2012-06-20

Abstract

The invention relates to a touch alarm of a travel suitcase, which is composed of a 9V direct-current power supply DC (Direct Current), a monostable circuit and a working status indicating and loudspeaking circuit, wherein the monostable circuit is composed of a time-base circuit IC (Integrated Circuit)1, a touch electrode M, a resistor R1, a capacitor C1, a resistor R2, an electrolytic capacitor C2 and a capacitor C3; and the working status indicating and loudspeaking circuit is composed of a red light emitting diode (LED), a resistor R3 and a high-loudness bicycle electric horn HA (High Availability). The touch alarm of the travel suitcase, disclosed by the invention, is an anti-theft device installed in the travel suitcase (draw-bar box) and is used for preventing the travel suitcase from being stolen when people go out. When the travel suitcase is in the hand of a master, the alarm does not work. When the master needs to temporarily leave or go to the bathroom, the alarm immediately gives out a high-decibel alarm sound when the travel suitcase is robbed under the condition that the travel suitcase is unwatched, a hijacking person can be forced to give up a thought of stealing the travel suitcase or quickly abandon the travel suitcase to flee the scene.

Description

The suitcase touching warner

Technical field

The invention belongs to the electron controls technology field, relate to a kind of suitcase touching warner.

Background technology

Suitcase touching warner of the present invention is a kind of anti-theft device that is installed in the suitcase (draw-bar box), in order to prevent your the be away from home generation of suitcase hijacking.Alarm is noiseless when suitcase is in owner's hand; During owner need leave temporarily or go the toilet convenient; In a single day suitcase is robbed by the people under unserviced situation and is got; This alarm can send the alarm song of high-decibel at once, can force to rob taker and abandon robbing the thought of getting suitcase, or abandon suitcase rapidly and flee the scene.

The circuit that below specifies the suitcase touching warner related correlation technique content in manufacturing process.

Summary of the invention

Goal of the invention and beneficial effect: suitcase touching warner of the present invention is a kind of anti-theft device that is installed in the suitcase (draw-bar box), the generation of the incident of being robbed in order to the suitcase that prevents to be away from home.This alarm is not worked when suitcase is in owner's hand; During owner need leave temporarily or go the toilet convenient; In a single day suitcase is robbed by the people under unserviced situation and is got; This alarm can send the alarm song of high-decibel at once, can force to rob taker and abandon robbing the thought of getting suitcase, or abandon suitcase rapidly and flee the scene.

Technical characterictic: the suitcase touching warner, form by 9V dc source DC, monostable circuit, duty indication and loudspeaker circuit, it is characterized in that:

Monostable circuit: form by time base circuit IC1, touch electrode M, resistance R 1, capacitor C 1, resistance R 2, electrochemical capacitor C2 and capacitor C 3; The model of time base circuit IC1 is selected NE555 for use; An end of electrode M and capacitor C 1 and an end of resistance R 1 are touched in the 2 pin contact of time base circuit IC1, the other end connection circuit ground GND of capacitor C 1, the anodal VCC of the other end connection circuit of resistance R 1; The end of 6 pin of time base circuit IC1 and 7 pin connecting resistance R2 and the positive pole of electrochemical capacitor C2; The anodal VCC of the other end connection circuit of resistance R 2, the 1 pin connection circuit ground GND of the negative pole of electrochemical capacitor C2 and time base circuit IC1,5 pin of time base circuit IC1 connect an end of capacitor C 3; The other end connection circuit ground GND of capacitor C 3, the anodal VCC of 4 pin of time base circuit IC1 and 8 pin connection circuits;

Duty indication and loudspeaker circuit: form by red light emitting diodes LED, resistance R 3 and high loudness bicycle electric horn HA; 3 pin of time base circuit IC1 connect the positive pole of red light emitting diodes LED; The end of the negative pole connecting resistance R3 of red light emitting diodes LED; The other end connection circuit ground GND of

resistance R

3,3 pin of time base circuit IC1 connect the positive pole of high loudness bicycle electric horn HA, the negative pole connection circuit ground GND of high loudness bicycle electric horn HA.

Other partial circuits are formed and the mutual annexation of components and parts

The positive pole of 9V dc source DC connects the end of DC power supply switch SW; One end of another termination microswitch AN normally-closed contact of DC power supply switch SW; The other end of microswitch AN normally-closed contact links to each other with circuit anode VCC, and the negative pole of 9V dc source DC links to each other with circuit ground GND.

The circuit working principle: the secret of this alarm is installed in the suitcase handle last one hidden normally closed type microswitch; When owner's finger was held in the suitcase handle in last time; Finger is normally closed type microswitch contact disconnection, and alarm circuit can sounding because of there not being electricity; When owner finger leave the suitcase handle the time; The contact demand working dc source DC of normally closed type microswitch; In case when having the people to touch the suitcase handle last touch electrode, the high loudness bicycle electric horn HA in the alarm circuit will get electric and send loud chimes of doom.

This circuit is mainly formed monostable circuit by 555 time base circuits; Suitcase carrying handle touch electrode M is on hand processed by sheet metal; As long as finger touch is to suitcase carrying handle touch electrode M on hand; Monostable circuit will be triggered, and the red light emitting diodes LED in the monostable circuit can be lighted, about 10 seconds of timing circuit working time.

Bump touch electrode M as the human finger, the noise signal voltage of human body sensing adds to trigger end 2 pin of time base circuit IC1, and this moment, the 3 pin output of time base circuit IC1 became high level by low level at once; Red light emitting diodes LED is lighted; High loudness bicycle electric horn HA will get electric and send loud chimes of doom simultaneously, and dc source DC gives electrochemical capacitor C2 charging through resistance R 2, regularly just picks up counting; When the voltage on the electrochemical capacitor C2 rise to the dc source dc voltage 2/3 the time; Electrochemical capacitor C2 makes 3 pin of time base circuit IC1 change low level into by the output high level through the 7 pin discharge of time base circuit IC1, and timing promptly comes to an end; Red light emitting diodes LED extinguishes because of outage, and high loudness bicycle electric horn HA stops to pipe because of dead electricity.

Description of drawings

Accompanying drawing 1 is the fundamental diagram of suitcase touching warner circuit; The negative pole of 9V dc source DC links to each other with circuit ground GND in the accompanying drawing 1; Microswitch AN uses its normally-closed contact.

The specific embodiment

Specification requirement according to circuit working schematic diagram shown in the accompanying drawing 1 and description of drawings and the following stated is implemented, and can realize the present invention.

The selection of components and parts and technical parameter

IC1 is a time base circuit, and its model is NE555, is encapsulated as 8 pin DIP, each pin function: 1 pin is circuit ground GND; 2 pin are trigger end; 3 pin outputs; 4 pin preset ends; 5 pin are control voltage; 6 pin thresholdings (threshold value); 7 pin are discharge end; 8 pin are positive source VCC;

It is 1/8W metalfilmresistor or fixed carbon resister that resistance is selected power for use, and the resistance of resistance R 1 is 1M Ω; The resistance of resistance R 2 is 22K Ω; The resistance of resistance R 3 is 510 Ω;

C1 is an electric capacity of the dacron, and capacity is 0.01 μ F; C2 is an electrochemical capacitor, and capacity is 1 μ F/16V; C3 is an electric capacity of the dacron, and capacity is 0.01 μ F;

LED is a red light emitting diodes, for indication monostable circuit duty is established;

HA is high loudness bicycle electric horn, and there is electronic circuit inside, and working power is 9V, and operating current is 100～120mA;

AN is a microswitch, selects the miniature microswitch of 5mm * 5mm * 12mm for use, uses its normally-closed contact;

SW is a DC power supply switch, selects the small-sized toggle switch of 5mm * 5mm * 12mm for use;

M is a touch electrode, can use the bullion sheet of 10mm * 70mm to make;

Dc source DC can use the 9V laminated cell, and rechargeable 9V battery pack is used in suggestion.

Make main points and circuit debugging

The circuit of suitcase touching warner gets final product operate as normal so long as the components and parts performance is intact after installation, the errorless energising of welding.

Suitcase touching warner circuit timing length is by the resistance of resistance R 2 or the capacity decision of electrochemical capacitor C2, that is: T1=1.1 * R2 * C2; By the numerical value of being given among the embodiment, the timing range of circuit about 10 seconds; The timer delay time is realized through the resistance of the resistance R 2 of change, can be changed the sensitivity that monostable circuit triggers through the resistance that changes resistance R 1.

Claims

1. a suitcase touching warner is made up of 9V dc source DC, monostable circuit, duty indication and loudspeaker circuit, it is characterized in that:

Monostable circuit is made up of time base circuit IC1, touch electrode M, resistance R 1, capacitor C 1, resistance R 2, electrochemical capacitor C2 and capacitor C 3; The model of time base circuit IC1 is selected NE555 for use; An end of electrode M and capacitor C 1 and an end of resistance R 1 are touched in the 2 pin contact of time base circuit IC1, the other end connection circuit ground GND of capacitor C 1, the anodal VCC of the other end connection circuit of resistance R 1; The end of 6 pin of time base circuit IC1 and 7 pin connecting resistance R2 and the positive pole of electrochemical capacitor C2; The anodal VCC of the other end connection circuit of resistance R 2, the 1 pin connection circuit ground GND of the negative pole of electrochemical capacitor C2 and time base circuit IC1,5 pin of time base circuit IC1 connect an end of capacitor C 3; The other end connection circuit ground GND of capacitor C 3, the anodal VCC of 4 pin of time base circuit IC1 and 8 pin connection circuits;

Duty indication and loudspeaker circuit are made up of red light emitting diodes LED, resistance R 3 and high loudness bicycle electric horn HA; 3 pin of time base circuit IC1 connect the positive pole of red light emitting diodes LED; The end of the negative pole connecting resistance R3 of red light emitting diodes LED; The other end connection circuit ground GND of resistance R 3,3 pin of time base circuit IC1 connect the positive pole of high loudness bicycle electric horn HA, the negative pole connection circuit ground GND of high loudness bicycle electric horn HA.

2. suitcase touching warner according to claim 1; It is characterized in that: the positive pole of 9V dc source DC connects the end of DC power supply switch SW; One end of another termination microswitch AN normally-closed contact of DC power supply switch SW; The other end of microswitch AN normally-closed contact links to each other with circuit anode VCC, and the negative pole of 9V dc source DC links to each other with circuit ground GND.