CN201035682Y

CN201035682Y - Power line anti-theft detection alarm

Info

Publication number: CN201035682Y
Application number: CNU2007201244070U
Authority: CN
Inventors: 杨博夫; 杨舒婷
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-04
Filing date: 2007-06-04
Publication date: 2008-03-12
Anticipated expiration: 2017-06-04

Abstract

The utility model discloses an electric power line anti-theft detection warning device, which comprises a relay (J), a buzzer (B), and a direct current power. The electric power line anti-theft detection warning device is characterized in that the detection warning device also comprises an indicating lamp (L), a first self-locking switch (K1), and a second self-locking switch (K2), wherein, the first self-locking switch (K1) and the coil winding of the relay (J) are connected together in series to form an induced return circuit, which is connected on an alternating current electric network circuit in series; a second normal close contact (J(1)) of the relay (J) is connected with the second self-locking switch (K2), the buzzer (B), and the direct current power together in series to form a warning return circuit. The utility model has the remarkable advantages that the structure is simple, the cost is low, the utility model has the self-detecting function, and the working stability of products is enhanced.

Description

The antitheft detection alarm device of power circuit

Technical field

The utility model belongs to the power line protection technical field, specifically, relates to the antitheft detection alarm device of a kind of power circuit to the power line network power alarm.

Background technology

At present, the agricultural power line network in vast rural area is often stolen, all bring great harm for agricultural life operation, but the burglar alarm at the rural power electric wire is fewer, the patent No. 00257696.1 discloses a kind of power cord burglar alarm, this power cord burglar alarm is made up of casing, binding post, A.C. contactor, relay, electric bell, power supply and three-phase power line, electric bell carries out switching control by relay normally open, normally closed contact, and the switching of relay is by the break-make control of A.C. contactor.

Its shortcoming is: complex structure, cost height, and device does not have self-checking function.

The utility model content

The purpose of this utility model provides the antitheft detection alarm device of a kind of power circuit, and it is simple in structure, cost is low.

For achieving the above object, the utility model is the antitheft detection alarm device of a kind of power circuit, comprise relay J, hummer B and direct supply, its key is: also comprise pilot lamp L, first self-lock switch and second self-lock switch, the coil winding of first self-lock switch and the relay J composition loop inductance that is serially connected wherein, this loop inductance is serially connected on the AC network circuit;

Second normally closed contact of described relay J and described second self-lock switch, hummer B and the direct supply composition alarm circuit that is chained together.

During AC network circuit operate as normal, be communicated with first self-lock switch, the coil winding of relay J is got, its second normally closed contact disconnects, and alarm circuit disconnects, even close second self-lock switch, hummer B also can't connect with direct supply, and hummer B can not work.

When the power down of AC network circuit, the coil winding power down of relay J, its second normally closed contact closure, the alarm circuit conducting, hummer B and direct supply are connected, and hummer B reports to the police, after the operator is known power down information, just can investigate normal the power failure or the unexpected broken string of AC network circuit appearance, and disconnect second self-lock switch, make hummer B stop to report to the police.

First normally closed contact of described relay J and pilot lamp L are serially connected and form the indication loop, and this indication loop and described loop inductance are connected in parallel on the same AC network circuit.

AC network circuit operate as normal, when being communicated with first self-lock switch, the coil winding of relay J gets when electric, and its first normally closed contact disconnects, pilot lamp L power down, when disconnecting first self-lock switch, during the coil winding power down of relay J, first normally closed contact is connected, and pilot lamp L shows, and the hummer B of alarm circuit work can be carried out self check to device whereby.

Described direct supply is composed in series by three lithium coin cells.

Lithium coin cells provides the direct supply of 4.5V for hummer B.

Remarkable result of the present utility model is: provide a kind of power circuit simple in structure, that cost is low antitheft detection alarm device, and had self-checking function, whether being convenient to operating personnel, regularly to understand device working properly, improved the job stability of product.

Description of drawings

Fig. 1 is circuit theory diagrams of the present utility model.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

As shown in Figure 1: the antitheft detection alarm device of a kind of power circuit, form by relay J, pilot lamp L, hummer B, direct supply, the first self-lock switch K1 and the second self-lock switch K2, the coil winding of the first self-lock switch K1 and the relay J composition loop inductance that is serially connected wherein, this loop inductance is serially connected on the AC network circuit;

The second normally closed contact J of described relay J " with the described second self-lock switch K2, hummer B and the direct supply composition alarm circuit that is chained together.

The first normally closed contact J ' of described relay J is serially connected with pilot lamp L and forms the indication loop, and this indication loop and described loop inductance are connected in parallel on the same AC network circuit.

AC network circuit operate as normal, when being communicated with the first self-lock switch K1, the coil winding of relay J gets when electric, and its first normally closed contact J ' disconnects, pilot lamp L power down, when disconnecting the first self-lock switch K1, during the coil winding power down of relay J, the first normally closed contact J ' connects, and pilot lamp L shows, and the hummer B of alarm circuit work can be carried out self check to device whereby.

Described direct supply is composed in series by three lithium coin cells.

Lithium coin cells provides the direct supply of 4.5V for hummer B.

Its principle of work is:

During AC network circuit operate as normal, be communicated with the first self-lock switch K1, the coil winding of relay J is got, its second normally closed contact J " disconnect, alarm circuit disconnects, even close the second self-lock switch K2; hummer B also can't connect with direct supply, and hummer B can not work.

When the power down of AC network circuit, the coil winding power down of relay J, its second normally closed contact J " closure; the alarm circuit conducting, hummer B and direct supply are connected, and hummer B reports to the police; after the operator is known power down information; just can investigate normal the power failure or the unexpected broken string of AC network circuit appearance, and disconnect the second self-lock switch K2, make hummer B stop to report to the police.

Claims

1. antitheft detection alarm device of power circuit, comprise relay (J), hummer (B) and direct supply, it is characterized in that: also comprise pilot lamp (L), first self-lock switch (K1) and second self-lock switch (K2), the coil winding of first self-lock switch (K1) and relay (J) the composition loop inductance that is serially connected wherein, this loop inductance is serially connected on the AC network circuit;

Second normally closed contact of described relay (J) (J ") and described second self-lock switch (K2), hummer (B) and the direct supply composition alarm circuit that is chained together.

2. the antitheft detection alarm device of power circuit according to claim 1, it is characterized in that: first normally closed contact of described relay (J) (J ') is serially connected with pilot lamp (L) and forms the indication loop, and this indication loop and described loop inductance are connected in parallel on the same AC network circuit.

3. the antitheft detection alarm device of power circuit according to claim 1 is characterized in that: described direct supply is composed in series by three lithium coin cells.