CN202067362U

CN202067362U - Hydrant supervising device

Info

Publication number: CN202067362U
Application number: CN2011201191544U
Authority: CN
Inventors: 傅哲龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-21
Filing date: 2011-04-21
Publication date: 2011-12-07
Anticipated expiration: 2021-04-21

Abstract

The utility model relates to the hydrant field, particularly to a hydrant supervising apparatus. The hydrant supervising apparatus comprises a vibration pickup module, a central processor, and an outer trigger module, wherein the output signals of the vibration pickup module are transmitted to a voltage comparison module via a signal amplification module; and the voltage comparison module and the outer trigger module are in output connection with the central processor and are connected with an RS485 communication interface module and an alarm module in an output manner via the central processor. The apparatus employs the vibration pickup module, a comparison amplification circuit, and other modules to form an antitheft monitoring circuit. The outer trigger module collects the signals of the open and closed times of the hydrant case door and the signals are output under the control of the central processor. An alarm to the host is made via the RS485 communication circuit. The alarm circuit is used for on-site alarm, thereby integrating safety monitoring and antitheft function together.

Description

A kind of hose saddle supervising device

Technical field

The utility model relates to the hose saddle field, particularly be a kind of hose saddle supervising device.

Background technology

Hose saddle belongs to urban public utilities, is important fire-fighting watering equipment, and operated by rotary motion is fetched water during in order to breaking out of fire or other emergency condition on both sides of the street.Because unmanned guard, hose saddle is stolen serious, stays hidden danger for the city fire safety, national wealth is suffered a loss, and existing Fire Alarm Button only is to connect fire pump when breaking out of fire, does not have the function of antitheft and security monitoring.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, provide a kind of can not only be antitheft, also have the hose saddle supervising device of security monitoring function.

The technical scheme that its technical matters that solves the utility model adopts is: a kind of hose saddle supervising device, involving vibrations pickup model, central processing unit and external trigger module, the output signal of described vibration pickup module sends to voltage comparison module through the signal amplification module, voltage comparison module and the output of external trigger module connect central processing unit, and connect RS485 communication interface modules and alarm module by central processing unit output.

Described vibration pickup module adopts the vibration transducer of being made up of piezoelectric patches, spring hammer to gather vibration signal.

Described vibration transducer is installed in hose saddle chamber door inside.

Described external trigger module is made of the snap switch output connection resistance and the photoelectricity coupled circuit that are installed in the chamber door.

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

By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: this device adopts vibration pickup module, comparison amplifying circuit etc. to form the anti-thefting monitoring circuit, the external trigger module is gathered the door open switch number of times signal of hose saddle chamber door, through central processing unit control output, report to the police to main frame by the RS485 telecommunication circuit, and warning circuit acts on onsite alarming, reaches security monitoring, anti-theft feature in one.

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.

Embodiment

As shown in Figure 1, a kind of hose saddle supervising device of the present utility model, involving vibrations pickup model 1, central processing unit 2 and external trigger module 3, the output signal of described vibration pickup module 1 sends to voltage comparison module 12 through signal amplification module 11, voltage comparison module 12 and 3 outputs of external trigger module connect central processing unit 2, and connect RS485 communication interface modules 21 and alarm module 22 by central processing unit 2 outputs.

As shown in Figure 2, by snap switch QT, resistance R 10, photoelectricity coupled circuit IC3, resistance R 11 grades are formed elimination bolt door switch number of times external trigger circuit, snap switch QT is installed in the chamber door, when hose saddle is closed, snap switch QT connects, photoelectricity coupled circuit IC3 is in low level state, when hose saddle is in disconnection, snap switch QT disconnects, and photoelectricity coupled circuit IC3 is in high level state, and the level output signal of photoelectricity coupled circuit IC3 is input to single-chip microcomputer U1 the 34th pin, also be high level state, divide two-way output after the control of single-chip microcomputer U1 internal processes, first via output is by the 36th pin output low level of single-chip microcomputer U1, and loudspeaker BYY sends and " ticks.。" alarm sound, prompting hose saddle door is opened; The second tunnel output is formed the RS485 datel circuit by the 1st, 2,3,4 pin of SN75176 chip IC 2 and the 10th, 11,25 pin of single-chip microcomputer U1, send the hose saddle data message that opens the door through SN75176 chip IC 2 to the PC machine, show by PC and preserve data message.

Form vibrating circuit by vibration transducer RD, resistance R 1, capacitor C 1, capacitor C 2 etc., operational amplifier IC1/a, resistance R 4, resistance R 5, resistance R 6, resistance R 7, diode D1 etc. form relatively amplifying circuit of voltage signal.Vibration transducer RD is installed in hose saddle chamber door inside, vibration transducer RD is by piezoelectric patches+P-, spring hammer+H-forms the vibration signal pickup, weight produces inertial shake when sensor is subjected to vibrating, the pilferage behavior is arranged, thereby drive the piezo vibration, and produce faint alternate electrical signal, after operational amplifier IC1/a amplifies, after diode D1 rectification, be input to the 5th pin of comparer IC1/b by the voltage signal of the 1st pin of operational amplifier IC1/a output, by resistance R 6, the 6th pin of resistance R 7 and comparer IC1/b is formed the benchmark comparative voltage, when the 5th pin current potential of comparer IC1/b is higher than its 6th pin current potential, comparer IC1/b interior overturn, by its 7th pin output high level,, make transistor Q1 conducting through resistance R 8 current limlitings, the 24th pin that is input to single-chip microcomputer U1 is low level state, divide two-way output after the control of single-chip microcomputer U1 internal processes, first via output is by the 36th pin output low level of single-chip microcomputer U1, and loudspeaker BYY sends and " ticks.。。" alarm sound, prompting hose saddle door is opened; The second tunnel output is formed the RS485 datel circuit by the 1st, 2,3,4 pin of SN75176 chip IC 2 and the 10th, 11,25 pin of single-chip microcomputer U1, sends the hose saddle data message that opens the door through SN75176 chip IC 2 to PC, by PC demonstration preservation data message.

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. hose saddle supervising device, it is characterized in that: involving vibrations pickup model (1), central processing unit (2) and external trigger module (3), the output signal of described vibration pickup module (1) sends to voltage comparison module (12) through signal amplification module (11), voltage comparison module (12) and external trigger module (3) output connect central processing unit (2), and connect RS485 communication interface modules (21) and alarm module (22) by central processing unit (2) output.

2. a kind of hose saddle supervising device according to claim 1 is characterized in that: described vibration pickup module (1) adopts the vibration transducer of being made up of piezoelectric patches, spring hammer to gather vibration signal.

3. a kind of hose saddle supervising device according to claim 2 is characterized in that: described vibration transducer is installed in hose saddle chamber door inside.

4. a kind of hose saddle supervising device according to claim 1 is characterized in that: described external trigger module (3) is made of the snap switch output connection resistance and the photoelectricity coupled circuit that are installed in the chamber door.

5. a kind of hose saddle supervising device according to claim 1 is characterized in that: described RS485 communication interface modules (21) sends data message by the SN75176 communication interface chip to PC.