CN201629021U - Fireproof earth-leakage monitoring device - Google Patents

Abstract

The utility model discloses a fireproof earth-leakage monitoring device, which can monitor fires caused by electrical reason or other reasons. The fireproof earth-leakage monitoring device comprises a single chip microcomputer; a tripping control circuit, a sound and light alarm circuit, a keyboard, a display circuit and a storage unit are in external connection with the single chip microcomputer, and an earth leakage transformer is connected with the single chip microcomputer via an A/D conditioning circuit. The fireproof earth-leakage monitoring device is characterized in that gas, smoke and temperature sensors are connected with the single chip microcomputer via a signal processing circuit. The fireproof earth-leakage monitoring device can realize on-line detection of residual current signal and smoke, temperature and gas signals, controls fire risk parameter changes and abnormal states of electric circuits or equipment at any time, can discover potential fire hazards and then eliminate the hazards by aid of sound and light alarm, tripping control and remote monitor.

Description

Fire prevention electric leakage supervising device

Technical field:

The utility model relates to a kind of supervising device, specifically a kind of fire prevention electric leakage supervising device.

Background technology:

At present, the supervising device that is provided with in the building is as fire prevention electric leakage supervising device, the device that it is reported to the police or cut off the electricity supply with the electrical fire monitoring in real time and the enforcement of formations such as leakage current transformer, alarm, dropout control circuit, this device mainly is adapted to the monitoring of electrical fire, then can not monitor the fire that is caused by other reasons.

Summary of the invention:

The purpose of this utility model provides a kind of fire prevention electric leakage supervising device that can monitor fire electric and that other reasons cause.

The utility model is to adopt following technical scheme to realize its goal of the invention, a kind of fire prevention electric leakage supervising device, it comprises single-chip microcomputer, single-chip microcomputer is circumscribed with dropout control circuit, sound light alarming circuit, keyboard and display circuit, storer, leakage current transformer is connected with single-chip microcomputer by the A/D modulate circuit, and gas, smog, temperature sensor are connected with single-chip microcomputer by signal processing circuit.

Single-chip microcomputer of the present utility model is circumscribed with the communication interface circuit that is used for telecommunication.

Owing to adopt technique scheme, the utility model has been realized goal of the invention preferably, can realize online detection residual current signal and smog, temperature, gas signal, at any time grasp the situation of change and the abnormality of the fire hazard parameter of electric wiring or equipment, and can in time find disaster hidden-trouble, remove a hidden danger by sound and light alarm, dropout control and remote monitoring.

Description of drawings:

Fig. 1 is a circuit block diagram of the present utility model.

Embodiment:

The utility model is described in further detail below in conjunction with accompanying drawing.

As shown in Figure 1, a kind of fire prevention electric leakage supervising device, it comprises single-chip microcomputer, single-chip microcomputer is circumscribed with dropout control circuit, sound light alarming circuit, keyboard and display circuit, storer, leakage current transformer is connected with single-chip microcomputer by the A/D modulate circuit, and gas, smog, temperature sensor are connected with single-chip microcomputer by signal processing circuit.

Single-chip microcomputer of the present utility model is circumscribed with the communication interface circuit that is used for telecommunication.

During the utility model work, the parameter setting is carried out at first self check after device starts, initialization.After program brought into operation, by leakage current transformer, smog, temperature, gas sensor were gathered residual current signal, smog, temperature, gas signal, and pass to single-chip microcomputer by A/D modulate circuit and signal processing circuit.

Single-chip microcomputer is handled the signal process of collecting, and in time is sent to display, if abnormal occurrence is arranged, then by the sound light alarming circuit warning or by communication interface relevant information is offered the remote monitoring end.

That the utility model single-chip microcomputer adopts is the STC89LE516AD of the PLCC44 of STC Corporation encapsulation, storer adopts 24LC256, gas sensor is selected the gas sensor of wide spectrum for use, and smoke transducer adopts the infrared electro attenuation type, and temperature sensor adopts platinum resistance temperature sensor.

Claims (2)

1. fire prevention electric leakage supervising device, it comprises single-chip microcomputer, single-chip microcomputer is circumscribed with dropout control circuit, sound light alarming circuit, keyboard and display circuit, storer, leakage current transformer is connected with single-chip microcomputer by the A/D modulate circuit, it is characterized in that gas, smog, temperature sensor are connected with single-chip microcomputer by signal processing circuit.

2. fire prevention electric leakage supervising device according to claim 1 is characterized in that single-chip microcomputer is circumscribed with the communication interface circuit that is used for telecommunication.

Images