CN202533772U

CN202533772U - Pressure monitoring module of fire hydrant

Info

Publication number: CN202533772U
Application number: CN201220207925XU
Authority: CN
Inventors: 吴桂林
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-10
Filing date: 2012-05-10
Publication date: 2012-11-14
Anticipated expiration: 2022-05-10

Abstract

The utility model relates to the technical field of a fire hydrant, in particular to a pressure monitoring module of the fire hydrant. The pressure monitoring module comprises a pressure sensor detection circuit, a trigger circuit, a single chip microcomputer control circuit, an alarm circuit, a water pump driving circuit and a carrier signal phase lock circuit. Output signals of the pressure sensor detection circuit are sent to the trigger circuit through a voltmeter, output signals of the trigger circuit are controlled and output to the alarm circuit, the water pump driving circuit and the carrier signal phase lock circuit through the single chip microcomputer control circuit, and output signals of the carrier signal phase lock circuit are sent to a carrier signal interpretation circuit through a frequency-selective amplifier. The pressure monitoring module uses the pressure sensor detection circuit to collect signals, timely monitors fire hydrant pressure, drives a water pump to supply water for a water feeder when the pressure is smaller than a setting value, gives out alarm and prompts for site, and achieves a purpose of wireless monitoring due to the fact that the alarm and the prompts are further transmitted to a fire control centre through a system bus to alarm designated personnel to timely processing failures.

Description

Hose saddle pressure monitor module

Technical field

The utility model relates to the hose saddle technical field, particularly be a kind of hose saddle pressure monitor module.

Background technology

In city layout and building, hose saddle is the main equipment of fire-fighting fire extinguishing, but after buildings comes into operation; The hose saddle that is disposed can be on the shelf for a long time; In burst during fire alarm, the pressure of hose saddle can satisfy fire fighting hydraulic pressure require most important, in case the hydraulic pressure of hose saddle is not enough; Just may incur loss through delay fire fighting work, result in greater loss.

The checkout equipment that the test that is specifically designed to hose saddle hydraulic pressure is arranged at present, principle are to add a tensimeter at the hydraulic giant head, open hose saddle (closing the hydraulic giant head simultaneously) test hose saddle hydraulic pressure.Disclose a kind of hose saddle water supply pick-up unit 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 hose saddle water supply capacity.Though these above-mentioned methods can be effectively the hydraulic pressure of hose saddle 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 hose saddle, fire truck, band rationally being set and rationally using the water source, as adopt outside checkout equipment, possibly 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 the utility model is to overcome above-mentioned deficiency, and a kind of hose saddle pressure monitor module is provided.

The utility model solves the technical scheme that its technical matters adopted: hose saddle pressure monitor module; Comprise pressure sensor detection circuit, trigger circuit, single chip machine controlling circuit, warning circuit, water pump driving circuit and carrier signal phase lock circuitry; The output signal of said pressure sensor detection circuit is sent to trigger circuit through voltage table; Output signal by trigger circuit exports warning circuit, water pump driving circuit and carrier signal phase lock circuitry to through single chip machine controlling circuit control again, and the output signal of said carrier signal phase lock circuitry sends to the carrier signal decoding scheme through the frequency-selecting amplifier circuit.

Said trigger circuit are made up of NE555 IC 2 and peripheral resistance R 5, capacitor C 1 thereof.

Said carrier signal phase lock circuitry is made up of LM567 tone decoder U1 and peripheral electric capacity 2C1, resistance 2R1, resistance 2R2 thereof.

Said frequency-selecting amplifier circuit is made up of elementary L1, electric capacity 2C2, the capacitor 2C3 of triode VT1, audio-frequency transformer (AFT) T, and sends data-signal through telephone wire to the carrier signal decoding scheme through secondary L2, the electric capacity 2C4 of audio-frequency transformer (AFT) T.

Said carrier signal decoding scheme is made up of the audio-frequency transformer (AFT) T1, LM567 ATD U2, triode VT2 and the LED that connect successively.

Through adopting above-mentioned technical scheme, the beneficial effect of the utility model is: this device adopts pressure sensor testing circuit detects acquired signal, monitors hose saddle pressure in real time; When pressure during less than setting value; Drive water pump and in water-feed, supply water, and the scene sends alarm, transfer to fire protection control center through system bus again; Remind the timely handling failure of designated person, reach the purpose of wireless monitor.

Description of drawings

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

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

Embodiment

Like Fig. 1, shown in Figure 2; The hose saddle pressure monitor module of the utility model; Comprise pressure sensor detection circuit 1, trigger circuit 11, single chip machine controlling circuit 2, warning circuit 3, water pump driving circuit 5 and carrier signal phase lock circuitry 6; The output signal of said pressure sensor detection circuit 1 is sent to trigger circuit 11 through voltage table; Output signal by trigger circuit 11 exports warning circuit 3, water pump driving circuit 5 and carrier signal phase lock circuitry 6 to through single chip machine controlling circuit 2 controls again, and the output signal of said carrier signal phase lock circuitry 6 sends to carrier signal decoding scheme 8 through frequency-selecting amplifier circuit 7.

By pressure transducer KB, resistance R 1, R2, R3 decomposition pressure sensor detection circuit 1 are formed trigger circuit 11 by NE555 IC 2, resistance R 5, capacitor C 1; Pressure transducer KB and NE555 IC 2 to being provided with tensimeter KT between the electric contact, when in the hose saddle when anhydrous, or pressure inside is when low; Moving contact " 1 " and lower limit contact " 3 " closure in the tensimeter KT table; Making NE555 IC 2 the 2nd pin is low level state, corresponding NE555 IC 2 set, and the 32nd pin I/O end that the high level signal of the 3rd pin output of NE555 IC 2 is input to single-chip microcomputer IC1 also is high level state; Judge that through single-chip microcomputer IC1 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 IC1; The prompting field staff, hose saddle is under-voltage or lack of water; The second tunnel output is formed carrier signal phase lock circuitry 6 by the multivibrator that LM567 tone decoder U1 and peripheral electric capacity 2C1, resistance 2R1, resistance 2R2 thereof constitute; Its oscillation frequency is by the parameter determining of electric capacity 2C1, resistance 2R1, and carrier frequency is adjusted in the 150-300KHZ scope.Elementary L1, electric capacity 2C2, capacitor 2C3 by triode VT1, audio-frequency transformer (AFT) T constitute frequency-selecting amplifier circuit 7; The 28th pin output high level signal by single-chip microcomputer IC1; Make LM567 tone decoder U1 obtain working power; LM567 tone decoder U1 starts working, and is coupled on local telephone network speaking wire or the AC network AC220V power lead and is sent by secondary L2, the electric capacity 2C4 of audio-frequency transformer (AFT) T, sends data-signal to the carrier wave main frame.

Said carrier signal decoding scheme 8 is made up of the audio-frequency transformer (AFT) T1, LM567 ATD U2, triode VT2, the LED that connect successively; The time constant of resistance 1R1, electric capacity 1C5 network has determined the voltage controlled oscillator of LM567 ATD U2; When the carrier wave extension set when main frame sends 150-300KHZ carrier wave command signal; Be coupled to the secondary L3 of audio-frequency transformer (AFT) T through electric capacity 1C1, audio-frequency transformer (AFT) T1, its secondary L3, electric capacity 1C2, electric capacity 1C3 form a carrier wave frequency selection network.Signal after the frequency-selecting is coupled to the 3rd pin signal input part of LM567 ATD U2 through electric capacity 1C4, after LM567 ATD U2 decoding, by its 8th pin output terminal output low level; Make triode VT2 conducting; LED is lighted, and the carrier data signal of receiving extension set is described, expression hose saddle hydraulic pressure or lack of water fault; Please in time observe processing, ensure that fire-fighting is equipped with operate as normal; Third Road output through resistance R 7 current limlitings, makes triode Q1 conducting by the 22nd pin output high level signal of single-chip microcomputer IC1, makes relay J 1 adhesive, and fire extinguishing pump supplies water in water-feed, and tensimeter KT internal gas pressure rises.

When rising to " 3 ", the moving contact " 1 " of tensimeter KT breaks away from; And with upper limit contact " 2 " when engaging, the 6th pin of NE555 IC 2 is that high level resets, after single-chip microcomputer IC1 internal processes is judged; The control signal of sending is through the 22nd pin output low level signal of single-chip microcomputer IC1; Triode Q1 is ended, and relay J 1 discharges, and fire extinguishing pump does not quit work because of there being electricity.

An above-described preferred embodiment that is merely the 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. hose saddle pressure monitor module; It is characterized in that: comprise pressure sensor detection circuit (1), trigger circuit (11), single chip machine controlling circuit (2), warning circuit (3), water pump driving circuit (5) and carrier signal phase lock circuitry (6); The output signal of said pressure sensor detection circuit (1) is sent to trigger circuit (11) through voltage table; Output signal by trigger circuit (11) exports warning circuit (3), water pump driving circuit (5) and carrier signal phase lock circuitry (6) to through single chip machine controlling circuit (2) control again, and the output signal of said carrier signal phase lock circuitry (6) sends to carrier signal decoding scheme (8) through frequency-selecting amplifier circuit (7).

2. hose saddle pressure monitor module according to claim 1 is characterized in that: said trigger circuit (11) are made up of NE555 IC 2 and peripheral resistance R 5, capacitor C 1 thereof.

3. hose saddle pressure monitor module according to claim 1 is characterized in that: said carrier signal phase lock circuitry (6) is made up of LM567 tone decoder U1 and peripheral electric capacity 2C1, resistance 2R1, resistance 2R2 thereof.

4. hose saddle pressure monitor module according to claim 1; It is characterized in that: said frequency-selecting amplifier circuit (7) is made up of elementary L1, electric capacity 2C2, the capacitor 2C3 of triode VT1, audio-frequency transformer (AFT) T, and sends data-signal through telephone wire to carrier signal decoding scheme (8) through secondary L2, the electric capacity 2C4 of audio-frequency transformer (AFT) T.

5. according to claim 1 or 4 described hose saddle pressure monitor modules, it is characterized in that: said carrier signal decoding scheme (8) is made up of the audio-frequency transformer (AFT) T1, LM567 ATD U2, triode VT2 and the LED that connect successively.