CN203552380U - Wireless anti-theft emitter of parking lot - Google Patents

Abstract

The utility model discloses a wireless anti-theft emitter of a parking lot. The wireless anti-theft emitter is composed of a battery, a switch, a suction type dry reed tube, a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a potentiometer, a triode, an NE555 time-based integrated chip, an emission chip and a unidirectional silicon controlled rectifier. The time-based integrated chip, the resistors and the capacitors are used for forming a self-excited multivibrator and the oscillation frequency is 1kHz. The emission chip is based on a built-in antenna type emission circuit; a pulse modulation circuit, a shaping amplification circuit, and an emission circuit and the like are arranged in the chip; and the work frequency is 150kHz. According to the scheme, the circuit works according to the adsorption closing or disconnection situation of the suction type dry reed tube. Moreover, the emitter has advantages of simple operation, high sensitivity, stable working, high efficiency, simple circuit structure, a few components, and low cost and thus can be popularized beneficially.

Description

A kind of wireless anti-theft transmitter of parking lot

Technical field

The utility model relates to a kind of burglary-resisting installation, relates in particular to a kind of wireless anti-theft transmitter of parking lot.

Background technology

Along with scientific and technological development and human living standard's raising, car has been an indispensable part during we live, we are called parking lot by the place of using that parks cars, parking lot can be divided into warm formula garage, garage, cold house, bicycle shed and open parking ground four classes, and its main task is that keeping parks cars.Along with the frequent generation of the stolen event of present vehicle, the also more and more sternness of problem that parking lot is antitheft.Along with the development in domestic security protection market, alarm market is also becoming better and approaching perfection day by day and grows up at present, and wireless anti-theft equipment is widely used in parking lot, yet, the wireless anti-theft transmitter circuit complex structure in a lot of parking lots, element is many, cost is high, and poor sensitivity, is unfavorable for universal and popularization.

Utility model content

The purpose of this utility model is just to provide in order to address the above problem a kind of wireless anti-theft transmitter of parking lot.

The utility model is achieved through the following technical solutions above-mentioned purpose:

The utility model comprises battery, switch, inhale disconnected type tongue tube, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, potentiometer, triode, model is the time base integrated chip of NE555, transmitting chip and one-way SCR, the anodal while of described battery and the first end of the disconnected type tongue tube of described suction, the collector of described triode is connected with the positive pole of described one-way SCR, the negative pole while of described one-way SCR and the first end of described the second resistance, the 4th pin of base integrated chip when described, when described, the 8th pin of base integrated chip and the cathode voltage input end of described transmitting chip are connected, the second end of described the second resistance is connected with the 7th pin of the first end of described the 3rd resistance base integrated chip when described simultaneously, the 6th pin of the first end while of described the 3rd resistance base integrated chip when described, when described, the second pin of base integrated chip is connected with the first end of described the 3rd electric capacity, when described, the 5th pin of base integrated chip connects the first end of described the 4th electric capacity, when described, the 3rd pin of base integrated chip connects the signal input part of described transmitting chip, the control utmost point of described one-way SCR is connected with the first end of described the first resistance with the emitter-base bandgap grading of described triode simultaneously, the base stage of described triode is connected with the first end of described the second electric capacity and the first end of described potentiometer simultaneously, the sliding end of described potentiometer is connected with the second end of the disconnected type tongue tube of described suction with the second end of described potentiometer simultaneously, the negative pole of described battery is connected with the first end of described the first electric capacity with the first end of described the 4th resistance simultaneously, the second end of described the 4th resistance connects the first end of described switch, the second end while of described switch and the cathode voltage input end of described transmitting chip, the second end of described the first electric capacity, the second end of described the 4th electric capacity, the second end of described the second electric capacity, the first pin of base integrated chip when described, the second end of described the first resistance is connected with the second end of described the 3rd electric capacity.

The beneficial effects of the utility model are:

When the utility model adopts, base integrated chip, resistance and electric capacity form free-running multivibrator, according to inhaling the disconnected adhesive of type tongue tube or the situation of disconnection, make circuit working, simple to operate, highly sensitive, working stability, efficiency are high, and circuit structure is simple, element is few, cost is low, is conducive to popularize.

Accompanying drawing explanation

Fig. 1 is circuit structure schematic diagram of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, the utility model is described in further detail:

As shown in Figure 1: the utility model comprises battery E, switch S, inhale disconnected type tongue tube GT, the first resistance R 1, the second resistance R 2, the 3rd resistance R 3, the 4th resistance R 4, the first capacitor C 1, the second capacitor C 2, the 3rd capacitor C 3, the 4th capacitor C 4, potentiometer RP, triode VT, model is that the time basis set of NE555 becomes chip IC 1, transmitting chip IC2 and one-way SCR VS, anodal while and the first end of inhaling disconnected type tongue tube GT of battery E, the collector of triode VT is connected with the positive pole of one-way SCR VS, the negative pole while of one-way SCR VS and the first end of the second resistance R 2, time basis set become the 4th pin of chip IC 1, time basis set become the 8th pin of chip IC 1 and the cathode voltage input end of transmitting chip IC2 to be connected, the second end of the second resistance R 2 simultaneously with the first end of the 3rd resistance R 3 with time basis set become the 7th pin of chip IC 1 to be connected, the first end while of the 3rd resistance R 3 with time basis set become the 6th pin of chip IC 1, time basis set become the second pin of chip IC 1 to be connected with the first end of the 3rd capacitor C 3, time basis set become the 5th pin of chip IC 1 to connect the first end of the 4th capacitor C 4, time basis set become the 3rd pin of chip IC 1 to connect the signal input part of transmitting chip IC2, the control utmost point of one-way SCR VS is connected with the first end of the first resistance R 1 with the emitter-base bandgap grading of triode VT simultaneously, the base stage of triode VT is connected with the first end of potentiometer RP with the first end of the second capacitor C 2 simultaneously, the sliding end of potentiometer RP is connected with the second end of inhaling disconnected type tongue tube GT with the second end of potentiometer RP simultaneously, the negative pole of battery E is connected with the first end of the first capacitor C 1 with the first end of the 4th resistance R 4 simultaneously, the first end of the second end connecting valve S of the 4th resistance R 4, the second end while of switch S and the cathode voltage input end of transmitting chip IC2, the second end of the first capacitor C 1, the second end of the 4th capacitor C 4, the second end of the second capacitor C 2, time basis set become the first pin of chip IC 1, the second end of the first resistance R 1 is connected with the second end of the 3rd capacitor C 3.

As shown in Figure 1: GT is the disconnected type tongue tube of a suction, when the door in parking lot is shut at ordinary times, magnet is near inhaling disconnected type tongue tube GT, inhale contact in disconnected type tongue tube GT and disconnect, base integrated chip when IC1 is, forms free-running multivibrator with the 3rd resistance R 3, the second resistance R 2 and the 3rd capacitor C 3, oscillation frequency is 1kHz, transmitting chip IC2 is concealed antenna formula radiating circuit, and several partial circuits such as pulsed modulation, shaping amplification, transmitting are contained in inside, and frequency of operation is 150kHz.

Claims (1)

1. the wireless anti-theft transmitter in parking lot, is characterized in that: comprise battery, switch, inhale disconnected type tongue tube, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, potentiometer, triode, model is the time base integrated chip of NE555, transmitting chip and one-way SCR, the anodal while of described battery and the first end of the disconnected type tongue tube of described suction, the collector of described triode is connected with the positive pole of described one-way SCR, the negative pole while of described one-way SCR and the first end of described the second resistance, the 4th pin of base integrated chip when described, when described, the 8th pin of base integrated chip and the cathode voltage input end of described transmitting chip are connected, the second end of described the second resistance is connected with the 7th pin of the first end of described the 3rd resistance base integrated chip when described simultaneously, the 6th pin of the first end while of described the 3rd resistance base integrated chip when described, when described, the second pin of base integrated chip is connected with the first end of described the 3rd electric capacity, when described, the 5th pin of base integrated chip connects the first end of described the 4th electric capacity, when described, the 3rd pin of base integrated chip connects the signal input part of described transmitting chip, the control utmost point of described one-way SCR is connected with the first end of described the first resistance with the emitter-base bandgap grading of described triode simultaneously, the base stage of described triode is connected with the first end of described the second electric capacity and the first end of described potentiometer simultaneously, the sliding end of described potentiometer is connected with the second end of the disconnected type tongue tube of described suction with the second end of described potentiometer simultaneously, the negative pole of described battery is connected with the first end of described the first electric capacity with the first end of described the 4th resistance simultaneously, the second end of described the 4th resistance connects the first end of described switch, the second end while of described switch and the cathode voltage input end of described transmitting chip, the second end of described the first electric capacity, the second end of described the 4th electric capacity, the second end of described the second electric capacity, the first pin of base integrated chip when described, the second end of described the first resistance is connected with the second end of described the 3rd electric capacity.

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