CN202061304U

CN202061304U - Pressure monitoring device of fire hydrant

Info

Publication number: CN202061304U
Application number: CN2011201388393U
Authority: CN
Inventors: 李明洁
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-05
Filing date: 2011-05-05
Publication date: 2011-12-07
Anticipated expiration: 2021-05-05

Abstract

The utility model relates to the technical field of fire hydrants, in particular to a pressure monitoring device of a fire hydrant, which comprises a pressure sensor detection circuit, a trigger circuit, a singlechip control circuit, a warning circuit, a water pump driving circuit and a RS485 communication interface circuit. Output signals of the pressure sensor detection circuit are transmitted to a voltmeter, the output end of the voltmeter is connected with the trigger circuit, and the output signals are output to the singlechip control circuit by the trigger circuit. The singlechip control circuit is connected with the warning circuit, the water pump driving circuit and the RS485 communication interface circuit in an output mode. The pressure monitoring device for the fire hydrant adopts the pressure sensor detection circuit to detect and collect signals, and monitors the pressure of the fire hydrant in real time. When the pressure is smaller than a set value, the pressure monitoring device drives a water pump to supply water to a water feeder and sends out warning prompt at the spot, and the warning prompt is transmitted to a fire fighting control center through a system bus so as to remind designated personnel to deal with the warning prompt in time.

Description

A kind of fire hydrant pressure monitoring device

Technical field

The utility model relates to the fire hydrant technical field, particularly be a kind of fire hydrant pressure monitoring device.

Background technology

In city layout and building, the configuration of fire hydrant is one of factor of basic consideration.But after building comes into operation, the fire hydrant that is disposed can be on the shelf for a long time, when the burst fire alarm, can use and pressure of supply water is not understood fire hydrant, therefore can not normally use or under the situation of not grasping water supply capacity, use fire hydrant, just may incur loss through delay fire fighting work, result in greater loss.

The checkout equipment that the test that is specifically designed to fire hydrant hydraulic pressure is arranged at present, principle are to add a Pressure gauge at the hydraulic giant head, open fire hydrant (closing the hydraulic giant head simultaneously) test fire hydrant hydraulic pressure.Disclose a kind of fire hydrant water supply checkout gear such as Chinese utility model patent ZL93212194.2, used for reference the structure and the principle of water pressure gauge, be used for the detection of fire hydrant water supply capacity.Though these above-mentioned methods can be effectively the hydraulic pressure of fire hydrant are detected, and wait in the specific implementation, must be equipped with and carry checkout equipment, bring very big trouble to the fire-fighting work person.Especially in when fire fighting, be the hydraulic pressure of grasping fire hydrant, fire fighting truck, band rationally being set and rationally using the water source, as adopt outside checkout equipment, may incur loss through delay fire fighting opportunity.In in case of fire, fire extinguishing is seized every minute and second, so improvements over the prior art are very important.

The utility model content

The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of fire hydrant pressure monitoring device is provided.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of fire hydrant pressure monitoring device, comprise pressure sensor detection circuit, circuits for triggering, single chip machine controlling circuit, warning circuit, water pump drive circuit and RS485 communication interface circuit, the output signal of described pressure sensor detection circuit transfers to voltmeter, the output of voltmeter connects circuits for triggering, export single chip machine controlling circuit to by circuits for triggering again, single chip machine controlling circuit output connects warning circuit, water pump drive circuit and RS485 communication interface circuit.

Described circuits for triggering are made of NE555 integrated circuit and peripheral resistance, electric capacity thereof.

Described RS485 communication interface circuit sends data message by the SN75176 communication interface modules to PC.

By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: this device adopts pressure sensor testing circuit detects gathers signal, monitor fire hydrant pressure in real time, when pressure less than when setting value, driving water pump supplies water in water-feed, and the scene sends alarm, transfers to fire protection control center by system bus again, reminds the designated person in time to handle.

Description of drawings

Fig. 1 is a frame assumption diagram of the present utility model;

Fig. 2 is circuit theory diagrams of the present utility model.

The specific embodiment

As shown in Figure 1, a kind of fire hydrant pressure monitoring device of the present utility model, comprise pressure sensor detection circuit 1, circuits for triggering 11, single chip machine controlling circuit 2, warning circuit 21, water pump drive circuit 22 and RS485 communication interface circuit 23, the output signal of described pressure sensor detection circuit 1 transfers to voltmeter, the output of voltmeter connects circuits for triggering 11, export single chip machine controlling circuit 2 to by circuits for triggering 11 again, single chip machine controlling circuit 2 outputs connect warning circuit 21, water pump drive circuit 22 and RS485 communication interface circuit 23.

As shown in Figure 2, by pressure sensor KB, resistance R 1, R2, R3 decomposition pressure sensor detection circuit 1, by NE555 integrated circuit U2, resistance R 5, capacitor C 1 grade is formed circuits for triggering 11, pressure sensor KB and NE555 integrated circuit U2 to being provided with Pressure gauge KT between the electric contact, when in the fire hydrant when anhydrous, or pressure inside is when low, movable contact " 1 " and lower limit contact " 3 " closure in the Pressure gauge KT table, making NE555 integrated circuit U2 the 2nd pin is low level state, corresponding NE555 integrated circuit U2 set, the 32nd pin I/O end that the high level signal of the 3rd pin output of NE555 integrated circuit U2 is input to single-chip microcomputer U1 also is high level state, judge that through single-chip microcomputer U1 internal processes control divides three tunnel outputs, first via output through resistance R 6 current limlitings, makes loudspeaker BY send alarm sound by the 4th pin output low level of single-chip microcomputer U1, the prompting Field Force, fire hydrant is under-voltage or lack of water; The second tunnel output is formed RS485 communication interface circuit 23 by the 1st, 2,3,4 pin of SN75176 communication interface modules U3 and the 10th, 11,21 pin of single-chip microcomputer U1, transfer two buses to by the 6th, 7 pin of SN75176 communication interface modules U3 and be connected to PC, send data message by single-chip microcomputer U1 to SN75176 communication interface modules U3, PC shows current fire hydrant state, and sends voice messaging and fire hydrant warning address; Third Road makes triode VT1 conducting by the high level signal of single-chip microcomputer U1 the 8th pin output through resistance R 11 current limlitings, makes relay J 1 adhesive, drives fire pump and supplies water in water-feed, and Pressure gauge KT table internal gas pressure is risen.When rising to " 3 ", Pressure gauge KT movable contact " 1 " breaks away from, and with upper limit contact " 2 " when engaging, NE555 integrated circuit U2 the 6th pin is that high level resets, judge that through single-chip microcomputer U1 internal processes control is by its 8th pin output low level signal, triode VT1 is ended, relay J 1 is discharged, and fire pump does not quit work because of there being electricity.

Above-described only is a preferred embodiment of the present utility model, can not limit the scope that this practicality is implemented, and every equalization of being done according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.

Claims

1. fire hydrant pressure monitoring device, it is characterized in that: comprise pressure sensor detection circuit (1), circuits for triggering (11), single chip machine controlling circuit (2), warning circuit (21), water pump drive circuit (22) and RS485 communication interface circuit (23), the output signal of described pressure sensor detection circuit (1) transfers to voltmeter, the output of voltmeter connects circuits for triggering (11), export single chip machine controlling circuit (2) to by circuits for triggering (11) again, single chip machine controlling circuit (2) output connects warning circuit (21), water pump drive circuit (22) and RS485 communication interface circuit (23).

2. a kind of fire hydrant pressure monitoring device according to claim 1 is characterized in that: described circuits for triggering (11) are made of NE555 integrated circuit and peripheral resistance, electric capacity thereof.

3. a kind of fire hydrant pressure monitoring device according to claim 1 is characterized in that: described RS485 communication interface circuit (23) sends data message by the SN75176 communication interface modules to PC.