CN216211428U - Electrical fire monitoring system - Google Patents

Abstract

The utility model relates to an electrical fire monitoring system, which comprises electrical fire monitoring equipment, a plurality of centralized display units and a plurality of integrated transformers, the electrical fire monitoring equipment is respectively connected with a plurality of centralized display units, and each centralized display unit The unit is connected to a plurality of integrated transformers, the centralized display unit is respectively connected to a temperature sensor and a leakage current transformer, and the integrated transformer is respectively connected to a temperature sensor and a leakage current transformer; the electrical fire monitoring equipment 1 includes a single-chip microcomputer, The data interconnection between the single-chip microcomputer and the human-computer interaction interface, RS232 communication circuit, network port communication circuit, two-bus communication circuit and RS485 communication circuit, the human-computer interaction interface includes buttons, indicator lights, liquid crystal display screens, etc. The interface and SD card data storage module; the single-chip microcomputer is connected to the switch output; the switching power supply is connected to the single-chip computer, and the output voltage is supplied. The utility model is applied to small places and is convenient and efficient.

Description

An electrical fire monitoring system

technical field

The utility model relates to the technical field of fire monitoring systems, in particular to an electrical fire monitoring system applied to small and micro places.

Background technique

With the rapid development of modern science and technology, the pace of social and national urbanization is advancing rapidly. In this process, electric energy is a very important energy source. It can be said that today's society is inseparable from electricity, and human beings cannot do without electricity. The utilization rate of electricity by human beings is increasing every year. Therefore, it is very important to use electricity in a safe and standardized way in life and production. With the increase of people's awareness of electricity consumption, the dangerous events caused by irregular electricity consumption are decreasing every year. safe work.

At present, most of the electrical fire monitoring equipment on the market is the combination of the piano table and the wall-mounted host, or some small places only use the wall-mounted host to build the electrical fire monitoring system. Very complete, but there are also some shortcomings.

The product market of the piano table is generally a metal cabinet, which is composed of industrial computer, communication circuit board and other components; the data of the lower wall-mounted monitoring extension is collected through the network cable connection, and the electrical fire monitoring system on the industrial computer will collect the residual current, Data such as temperature, arc fault, electric energy, etc. are displayed; in general, the functions are very powerful and complete; a console host can be connected to at least 32 extensions, and one extension can be connected to a maximum of 256 points, generally used in large-scale group building.

However, in some small and micro places and single buildings, the equipment connected to the terminal does not have so many points, which results in a waste of host resources; and the price of the host and wall-mounted extension of the piano table is expensive, which is a waste of resources for users. .

There is also an electrical fire system applied to a small single building on the market. A wall-mounted host collects the data of the terminal equipment through RS485 communication, and displays the information to the user on the display screen of the wall-mounted host. This type of wall-mounted host usually It is composed of display screen (Android screen, dot matrix LCD screen, etc.), switching power supply, circuit board, printer, lead-acid battery or lithium battery and other components. There are two disadvantages to this application. First, the wall-mounted host is large in size and light in weight, which has certain requirements for the installation of customers; second, the cost of the wall-mounted host is also relatively high.

Utility model content

The purpose of this utility model is to overcome the above-mentioned shortcomings, provide an electrical fire monitoring system, and provide an electrical fire monitoring system applied to small and micro places, including electrical fire monitoring equipment, a centralized display unit, and an integrated electrical fire monitoring detector.

The purpose of this utility model is achieved in this way:

An electrical fire monitoring system, which includes electrical fire monitoring equipment, a plurality of centralized display units and a plurality of integrated transformers, the electrical fire monitoring equipment is respectively connected with a plurality of centralized display units, and each centralized display unit is connected with a plurality of integrated type transformer, the centralized display unit is respectively connected to the temperature sensor and the leakage current transformer, and the integrated transformer is respectively connected to the temperature sensor and the leakage current transformer; the electrical fire monitoring equipment 1 includes a single-chip microcomputer, and the single-chip computer interacts with man-machine Interface, RS232 communication circuit, network port communication circuit, two bus communication circuit and RS485 communication circuit data interconnection, human-computer interaction interface includes buttons, indicator lights, liquid crystal display, etc. The single-chip microcomputer is also connected with USB interface and SD card data The storage module; the single-chip microcomputer is connected to the switch output; the switching power supply is connected to the single-chip computer, and the output voltage is supplied.

Further, the centralized display unit includes a single-chip microcomputer, the single-chip computer and the human-computer interaction interface, the RS232 communication circuit, the network port communication circuit, the two-bus communication circuit and the RS485 communication circuit are data interconnected, and the human-computer interaction interface includes buttons, indicator lights, and liquid crystals. The single-chip microcomputer is also connected with a USB interface and an SD card data storage module; the single-chip microcomputer is connected to the switching output; the switching power supply is connected to the single-chip microcomputer, and the output voltage is supplied.

Further, the integrated transformer includes a single-chip microcomputer, the single-chip microcomputer is connected with the human-computer interface and the two-bus communication circuit for data interconnection, and the single-chip microcomputer is also connected to the temperature sampling module and the leakage sampling module.

Compared with the prior art, the beneficial effects of the present utility model are:

The utility model provides an electrical fire monitoring system. The electrical fire monitoring host and the centralized display unit of the utility model are designed to have the same shape and size as an instrument, adopt RS485 bus communication, and the monitoring equipment can monitor up to 32 monitoring units (detectors) It can be matched with ARCM series monitoring detectors; compared with the large size of the electrical cabinet of the existing monitoring system, the utility model has a compact and convenient appearance; the installation mode can support rail and wall-mounted installation. The utility model reduces the cost of the monitoring system. The market price of an existing set of mainframes is at least 20,000 yuan, while the cost of the monitoring system of the utility model is estimated to be less than 2,000 yuan.

Description of drawings

Figure 1 is a schematic structural diagram of the utility model.

FIG. 2 is a schematic structural diagram of the electrical fire monitoring equipment of the present invention.

FIG. 3 is a functional block diagram of the electrical fire monitoring equipment of the present invention.

FIG. 4 is a front view of the centralized display unit of the present invention.

FIG. 5 is a functional block diagram of the centralized display unit of the present invention.

FIG. 6 is a functional block diagram of the integrated transformer of the present invention.

in:

Electrical fire monitoring equipment 1, centralized display unit 2, integrated transformer 3, temperature sensor 4, leakage current transformer 5.

Detailed ways

In order to better understand the technical solutions of the present invention, the following will be described in detail with reference to the relevant figures. It should be understood that the following specific embodiments are not intended to limit the specific implementation aspects of the technical solutions of the present invention, but are merely applicable implementation aspects of the technical solutions of the present invention. It should be noted that the description of the positional relationship of each component in this article, such as the fact that part A is located above part B, is based on the description of the relative position of each component in the figure, and is not intended to limit the actual positional relationship of each component.

Example 1:

Referring to Figures 1-6, Figure 1 is a schematic structural diagram of the present invention. As shown in the figure, the utility model relates to an electrical fire monitoring system, which includes electrical fire monitoring equipment 1, a plurality of centralized display units 2, and a plurality of integrated transformers 3. The electrical fire monitoring equipment 1 is connected to three Each centralized display unit 2 is connected to a plurality of integrated transformers 3, the centralized display units 2 are respectively connected to a temperature sensor 4 and a leakage current transformer 5, and the integrated transformers 3 are respectively connected to a temperature sensor 4 and leakage current transformer 5.

The electrical fire monitoring equipment 1 includes a first single-chip computer, and the first single-chip computer and the first human-computer interaction interface, the first RS232 communication circuit, the first network port communication circuit, the first two bus communication circuit and the first RS485 communication circuit data exchange. The first human-computer interaction interface includes a first button, a first indicator light, a first liquid crystal display, etc., and the first single-chip microcomputer is also connected with a first USB interface and a first SD card data storage module; the first single-chip microcomputer is connected to Switch output; the switching power supply is connected to the first single-chip microcomputer, and the output voltage is supplied for power supply.

The rated working voltage of the switching power supply is AC 220V (85%~110%);

The electrical fire monitoring equipment 1 is a 24-hour working system;

The communication mode of the electrical fire monitoring equipment 1 includes RS485 bus communication, Modbus-RTU communication protocol, the transmission distance is 1Km, and the communication transmission distance can be extended through the repeater;

The monitoring capacity of the electrical fire monitoring equipment 1: the monitoring equipment can monitor up to 32 monitoring units (detectors); it can be connected with ARCM series monitoring detectors.

The monitoring and alarming items of the electrical fire monitoring equipment 1:

(1) Residual current fault (leakage): attribute of faulty unit (location, type);

(2) Temperature alarm (over temperature): attribute of faulty unit (location, type);

(3) Monitoring alarm response time: ≤10s

(4) Monitoring alarm sound pressure level (A weighting): ≥70dB/ Im

(5) Monitor alarm light display: red LED indicator, red light alarm signal should be maintained until manual reset

(6) Monitor the alarm sound signal: it can be eliminated manually, and it can be started again when there is an alarm signal input again.

The fault alarm items of the electrical fire monitoring equipment 1:

(1) The communication cable between the monitoring equipment and the detector is open or short-circuited;

(2) The connection line between the detector and the residual current sensor and temperature sensor is open or short circuited;

(3) Fault alarm response time: ≤100s;

(4) Monitoring alarm sound pressure level (A weighting): ≥70dB/ Im;

(5) Monitor alarm light display: yellow LED indicator light, yellow light alarm signal should be maintained until the fault is eliminated;

(6) Fault alarm sound signal: it can be eliminated manually, and it can be started again when the alarm signal is input again;

(7) During the fault period, the normal operation of the non-faulty circuit is not affected.

The control output of the electrical fire monitoring equipment 1:

Alarm control output: 2 groups of normally open passive contacts; contact capacity AC 220V/1A, DC 30V/1A.

The self-check items of the electrical fire monitoring equipment 1:

(1) Indicator light inspection: alarm, fault, operation;

(2) Screen inspection and sound inspection;

(3) Self-test time ≤ 60s.

Event records of the electrical fire monitoring equipment 1:

(1) Record content: record type, occurrence time, detector number, area, fault description, etc.

(2) Record query: query according to the date, type and other conditions of the record.

The operation classification of the electrical fire monitoring equipment 1:

(1) Daily duty class: real-time status monitoring, event record query;

(2) Monitoring operation level: real-time status monitoring, event record query, detector remote reset, equipment self-check;

(3) System management level: real-time status monitoring, event record query, detector remote reset, equipment self-inspection, monitoring equipment system parameter query, separate monitoring of each module of monitoring equipment, operator addition and deletion.

The centralized display unit 2 includes a second single-chip computer, the second single-chip computer and the second human-machine interface, the second RS232 communication circuit, the second network port communication circuit, the second bus communication circuit and the second RS485 communication circuit data interconnection , the second human-computer interaction interface includes a second button, a second indicator light, a second liquid crystal display, etc., the second single-chip microcomputer is also connected with a second USB interface and a second SD card data storage module; the second single-chip microcomputer is connected to a switch The switching power supply is connected to the second single-chip microcomputer, and the output voltage is supplied.

The integrated transformer 3 includes a third single-chip microcomputer, which is data interconnected with the third human-machine interface and the third-second bus communication circuit, and the third single-chip computer is connected to the temperature sampling module and the leakage sampling module.

The above are only specific application examples of the present invention, and do not constitute any limitation to the protection scope of the present invention. All technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims (3)

1. An electrical fire monitoring system is characterized in that: it comprises electrical fire monitoring equipment and a plurality of centralized display units and a plurality of integrated transformers, and the electrical fire monitoring equipment is connected with a plurality of centralized display units respectively, and each centralized display unit. The display unit is connected to a plurality of integrated transformers, the centralized display unit is respectively connected to a temperature sensor and a leakage current transformer, and the integrated transformer is respectively connected to the temperature sensor and the leakage current transformer; the electrical fire monitoring equipment includes a first The single-chip microcomputer, the first single-chip computer and the first human-computer interaction interface, the first RS232 communication circuit, the first network port communication circuit, the first two bus communication circuit and the first RS485 communication circuit are data interconnected, and the first human-computer interaction interface includes the first A button, a first indicator light, and a first liquid crystal display screen, the first single-chip microcomputer is also connected with a first USB interface and a first SD card data storage module; the first single-chip microcomputer is connected to the switching output; the switching power supply is connected to the first single-chip computer, output voltage supply. 2 . An electrical fire monitoring system according to claim 1 , wherein the centralized display unit comprises a second single-chip computer, the second single-chip computer and the second human-computer interface, the second RS232 communication circuit, the second network The port communication circuit, the second bus communication circuit and the second RS485 communication circuit are data interconnected, the second human-computer interaction interface includes a second button, a second indicator light, and a second liquid crystal display screen, and the second single-chip microcomputer is also connected with a The second USB interface and the second SD card data storage module; the second single-chip microcomputer is connected to the switching output; the switching power supply is connected to the second single-chip computer, and the output voltage supplies power. 3. An electrical fire monitoring system according to claim 1, characterized in that: the integrated transformer comprises a third single-chip microcomputer, and the third single-chip microcomputer interacts with a third human-computer interface and a third-second bus communication circuit for data exchange. The third single-chip microcomputer is also connected to the temperature sampling module and the leakage sampling module.

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