Summary of the invention
The present invention, in order to overcome the shortcoming of above-mentioned technical problem, provides a kind of low in energy consumption, long service life and can realize fire hydrant on-line monitoring navigation system and the method thereof of seamless monitoring.
Fire hydrant on-line monitoring navigation system of the present invention, the phase difference locating base station comprising MCU controller, GPRS communication module, PC main control system and fire hydrant is positioned; It is characterized in that: the input of shown MCU controller is connected with the mechanical compression overrun testing sensor detecting the whether super upper and lower bound of fire hydrant hydraulic pressure, the electronic water pressure sensor detected the hydraulic pressure numerical value of fire hydrant and periodic awakening impulse generator, and mechanical compression overrun testing sensor and electronic water pressure sensor are all arranged on fire hydrant body; GPRS communication module is connected with the output of MCU controller, for the geographical position coordinates information of the alarm signal of MCU controller collection, hydraulic pressure numerical value and this point is sent to PC main control system by Ethernet, PC main control system is connected with the short message alarm module for sending warning message to mobile terminal.
Fire hydrant on-line monitoring navigation system of the present invention, comprise the relay station of reception and forwarding data, described MCU controller is connected with ISM band communication module, the data of collection are sent to relay station by ISM band communication module by MCU controller, and the receipt of reception is sent by GPRS communication module by relay station.
Fire hydrant on-line monitoring navigation system of the present invention, described mechanical compression overrun testing sensor comprises fixed cover, pressure calibration knob, checkout gear head protector and pressure transmission rod, and the inside of fixed cover and pressure calibration knob is cavity; Fire hydrant body offers the screwed hole matched with fixed cover, pressure calibration knob is placed in the inside of fixed cover by screw thread, and checkout gear head protector is fixed on the top of pressure calibration knob; One end of pressure transmission rod stretches in the internal cavities of fire hydrant body, and the other end is provided with the triggering trip block that conductive material is formed, and is provided with pressure throw over spring between pressure calibration knob and pressure transmission rod; The periphery of described checkout gear head protector is disposed with pressure upper limit adjustment ring, threshold pression adjustment ring from top to bottom, the inwall of threshold pression adjustment ring and pressure upper limit adjustment ring is all movably set with trigger terminal, trigger terminal is made up of two spaced electrodes, checkout gear head protector offers vertical slot, and trigger terminal is placed in vertical slot; By rotation pressure demarcate knob can change pressure throw over spring by compression degree, and then regulate hydraulic pressure in fire hydrant body to reach the upper limit, lower position of triggering trip block in limited time; By rotating the height of threshold pression adjustment ring and the adjustable trigger terminal on it of threshold pression adjustment ring, and then the pressure upper limit value of hydraulic pressure and threshold pression value in fire hydrant body during regulation output alarm signal.
Fire hydrant on-line monitoring navigation system of the present invention, described checkout gear head protector is connected by screw thread with pressure calibration knob, and described threshold pression adjustment ring and pressure upper limit adjustment ring are by being screwed on the outer wall of checkout gear head protector.
Fire hydrant on-line monitoring navigation system of the present invention, the lower end of described pressure calibration knob inwall is provided with the first position limiting convex ring, the outer wall of pressure transmission rod lower end is provided with the second position limiting convex ring, pressure throw over spring is between the first position limiting convex ring and the second position limiting convex ring; Fixed cover below second position limiting convex ring is provided with the 3rd position limiting convex ring, the below of the 3rd position limiting convex ring is provided with the sealing ring to the sealing gap between pressure transmission rod and fixed cover.
Fire hydrant on-line monitoring navigation system of the present invention, the inwall of described threshold pression adjustment ring and pressure upper limit adjustment ring all offers two annular slots, two electrodes of trigger terminal are fixed on collets, collets are provided with two fixture blocks matched with annular slot.
The monitoring method of fire hydrant on-line monitoring navigation system of the present invention, its special feature is, is realized: a) by following steps. system initialization self-inspection, after system is opened, first MCU controller initializes the modules that also self-inspection is coupled, enters step b after errorless); B). system enters resting state, and under the control action of MCU controller, whole system enters resting state; C). whether there is pressure limit interrupt signal to export, whether mechanical compression overrun testing sensor detects that the hydraulic pressure in fire hydrant reaches higher limit or lower limit, if reach higher limit or lower limit, then send interrupt signal and wake MCU controller up, perform steps d); D). produce hydraulic pressure overload alarm signal, after MCU controller receives the upper limit or lower limit alarm signal, by GPRS communication module, Ethernet, alarm signal is sent to PC main control system, alarm signal is sent to the mobile terminal of staff by PC main control system by short message alarm module; If reported to the police for force value surpasses lower limit, then show the not enough or lack of water of hydraulic pressure in fire hydrant, if surpass upper limit alarm for force value, then show the hypertonia in fire hydrant, should check and keep in repair in the scene of sending someone in time; E). judge whether timing cycle, judge whether the timing cycle T reaching periodic awakening impulse generator, if reached, then produce and wake pulse up, wake MCU controller up and detect hydraulic pressure by electronic water pressure sensor, fire hydrant inner pipe water pressure is gathered, perform step f); F). transmit pressure value signal, the pressure value signal of collection is sent on PC main control system by GPRS communication module, Ethernet by MCU controller, the fire hydrant hydraulic signal of collection is sent on the mobile terminal of staff by PC main control system again, to realize the measurement of fire hydrant hydraulic pressure numerical value.
The monitoring method of fire hydrant on-line monitoring navigation system of the present invention, steps d) in the alarm signal that sends of MCU controller comprise the geographical location information of fire hydrant and the super upper limit or super lower limit information, step e) described in timing cycle T be 8 hours, 12 hours or 24 hours.
The invention has the beneficial effects as follows: fire hydrant on-line monitoring navigation system of the present invention and monitoring method thereof, by arranging the mechanical compression overrun testing sensor and electronic water pressure sensor that are connected with MCU controller, when the hydraulic pressure in fire hydrant is too high or too low, all can produce and interrupt alarm signal to MCU controller, the very power saving of this test format, effectively extends the service life of sensor; Periodically can wake MCU up by impulse generator and measure the hydraulic pressure in fire hydrant, guaranteeing can obtain in certain hour section the hydraulic pressure value in fire hydrant at least one times, ensure that the own health of fire hydrant detection module runs.
The present invention adopts mechanical type and electronic type " double mode " pressure sensor, mechanical pressure sensors realizes monitoring point and detects hydraulic pressure in real time, detection MCU is allowed to enter resting state, save power consumption, mechanical pressure sensors and recurrent pulses generator wake MCU reading electronic pressure sensor accurate pressure value up and upload after producing and waking pulse up.
Fire hydrant on-line monitoring navigation system of the present invention and monitoring method thereof, adopt mechanical compression to transfinite detection mode that sensor combines with electronic water pressure sensor, both reduce the energy consumption of sensor, extend its service life, achieve again the uninterrupted detection to fire hydrant state, beneficial effect is remarkable, is suitable for applying.
Detailed description of the invention
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, give the schematic diagram of fire hydrant on-line monitoring navigation system of the present invention, it phase difference locating base station comprising mechanical compression overrun testing sensor 1, electronic water pressure sensor 2, periodic awakening impulse generator 3, MCU controller 4, ISM band communication module 5, GPRS communication module 6, Ethernet 7, PC main control system 8, short message alarm module 9, report writer 10 and fire hydrant is positioned; Mechanical compression overrun testing sensor 1, electronic water pressure sensor 2, periodic awakening impulse generator 3 are all connected with the input of MCU controller 4, and ISM band communication module 5 is all connected with the output of MCU controller 4 with GPRS communication module 6.
Only have when the hydraulic pressure in fire hydrant exceedes determined threshold or higher limit, mechanical compression overrun testing sensor 1 just can produce triggering signal and wake MCU controller 4 up, for very energy-conservation this detection mode, extend the service life of sensor, ensure that Long-Time Service.Only have periodic awakening impulse generator 3 time-count cycle then, just electronic water pressure sensor 2 is waken up, carry out the measurement of hydraulic signal in fire hydrant, achieve the saving of the energy content of battery.This employing mechanical compression overrun testing sensor 1 and the detection mode of electronic water pressure sensor 2 complementation, achieve and monitor " uninterruptedly " of fire hydrant, ensure that the normal of hydraulic pressure in fire hydrant, and energy consumption is low, is suitable for being applied on the fire hydrant of outdoor.
Shown ISM band communication module 5, GPRS communication module 6 are all connected with MCU controller 4, fire hydrant monitoring system communication mode is divided into two classes: a class is Outdoor Fire Hydrant, fire hydrant is generally established along road, the overseas cloth in No Fire Area, fire hydrant monitoring point, active power supply difficulty is large, cost is high, adopt the pattern of data relay teletransmission and active power supply contradiction, so the data communication of Outdoor Fire Hydrant monitoring point adopts one point data GPRS teletransmission pattern; Another kind of is indoor fireplug, seek in indoor and get the convenient point of power supply as relay wireless signals station, receive the data of the wireless ISM wave band of fire hydrant monitoring point, relay station takes the mode of GPRS by data remote, saves the rate that indoor each data of monitoring point teletransmission brings.As shown in Figure 4, give the circuit diagram of relay station, relay station receives the wireless ISM wave band data of fire hydrant monitoring point, by the mode of GPRS, data is sent to Surveillance center.
Hydraulic pressure value in the super upper limit that MCU controller 4 gathers, lower limit alarm signal and fire hydrant transfers to the PC main control system 8 of far-end by GPRS communication module 6, Ethernet 7, PC main control system 8 is connected with short message alarm module 9 and report writer 10, so that warning message and force value are sent on the mobile terminal of staff by PC main control system 8, and printed by report writer 10, be convenient to the running status that staff knows fire hydrant, inspection and maintenance is carried out to the fire hydrant broken down.
Fire hydrant is located, and during as adopted built-in GPS chip positioning, needs external GPS positioning antenna.Fire hydrant in the building of actual monitoring, positioning antenna cannot receiving satellite signal, is difficult to obtain fire hydrant coordinate information.When public fire protection bolt adds GPS location, satellite earth antenna is easily damaged, and each start all needs to start GPS and carries out coordinate acquisition.Realize the meter level location of fire hydrant, need Differential positioning be adopted, or buy the absolute coordinate of this point.Adopt Differential positioning, the start of each monitoring point realizes Differential positioning to the correct differential signal that receives, and needs about 1 minute consuming time, causes Overall Power Consumption to rise, and the gps antenna of monitoring point installs difficulty simultaneously, and is easily subject to extraneous destruction.Native system adopts, preset monitoring point difference coordinate, and whenever monitoring point, periodicity Monitoring Data reports, or event flip-over type data report, and all sends difference coordinate data.For fire hydrant is found in responding, providing accurate position coordinates, providing basic data for optimizing fire route scheme.
At fire fighting monitoring center, build based on carrier phase differential positioning base station, base station provides Differential positioning correction value to for each sense terminals, improves each sense terminals positioning precision within 30cm.During single base station Differential positioning, can ensure that positioning precision is within 30cm scope, the area of effective coverage of base station is circumference 10km.The navigation system of native system fire hydrant test point adopts longitude and latitude preset mode to position.Before test point erection unit, carry out the longitude and latitude differential testing of this point, carry out the calculating of longitude and latitude deviation in the whole cycle that operated by satellite, ask its mean value.The latitude and longitude information obtained and dynamic difference satellite location data carry out deviation calculating, and average latitude and longitude coordinates and dynamic latitude and longitude coordinates deviation are within 30cm.When responding personnel go to spot, carry the navigator receiving base station differential data, can provide and go to spot path profile, and position of hydrant figure nearby, navigation positioning error, within 30cm, provides the running status of fire hydrant nearby simultaneously.Make responding personnel can find spot and available fire hydrant accurately, timely.
As shown in Figure 2, give the structural representation of mechanical type fire hydrant pressure limit checkout gear of the present invention, it comprises fixed cover 12, pressure calibration knob 13, checkout gear head protector 16, pressure transmission rod 19, pressure throw over spring 20, triggers trip block 17, threshold pression adjustment ring 14, pressure upper limit adjustment ring 15, sealing ring 21; Shown fire hydrant body 1 is the structure of fire hydrant, after perforating on fire hydrant body 11, tapping, is fixed on fire hydrant body 1 by fixed cover 12.Shown fixed cover 12, the inside of pressure calibration knob 13 are cavity, pressure transmission rod 19 is placed in the internal cavities of fixed cover 12 and pressure calibration knob 13, the inside of fixed cover 2 lower end is provided with the 3rd position limiting convex ring 25, the below of the 3rd position limiting convex ring 25 is provided with sealing ring 21, sealing ring 21 for the sealing gap between pressure transmission rod 19 and fixed cover 12, to move under the effect ensureing pressure transmission rod 19 inside water pressure in fire hydrant body 11.
The outer surface of shown pressure transmission rod 19 lower end is provided with the second position limiting convex ring 24, the lower end of pressure calibration knob 13 inwall is provided with the first position limiting convex ring 23, pressure throw over spring 20 between the first position limiting convex ring 23 and the second position limiting convex ring 24, to ensure that pressure transmission rod 19 is mobile with the change of pressure in fire hydrant body 11.Demarcate knob 13 by rotational pressure, can change pressure throw over spring 20 by compression degree, and then change the position of triggering trip block 7 when pressure in fire hydrant body reaches the upper limit, lower limit.
Checkout gear head protector 16 is fixed on the top of pressure calibration knob 13, the central openings of checkout gear head protector 16.Shown pressure upper limit adjustment ring 15 and threshold pression adjustment ring 14 are by being screwed on checkout gear head protector 16 periphery, pressure upper limit adjustment ring 15 and threshold pression adjustment ring 14 are all movably set with trigger terminal 18, checkout gear head protector 16 offers vertical slot 22, trigger terminal 18 is placed in vertical slot 22, in the process of limits pressure adjustment ring 14 and pressure upper limit adjustment ring 15 under rotation, trigger terminal 18 can be made to move up and down in vertical slot 22.
In the process that pressure transmission rod 19 moves up and down with the pressure change in fire hydrant, when the hydraulic pressure value in fire hydrant body 11 increases to a certain degree, the triggering at pressure transmission rod 19 top can be made to swim block 17 contact with the trigger terminal 18 in pressure upper limit adjustment ring 15, make two electrode conductions of this trigger terminal 18, the too high alarm signal of output pressure.When the hydraulic pressure value in fire hydrant body 11 is reduced to a certain degree, the triggering at pressure transmission rod 19 top can be made to swim block 17 contact with the trigger terminal 18 in threshold pression adjustment ring 14, make two electrode conductions of this trigger terminal 18, the too low alarm signal of output pressure.By regulating the position of trigger terminal in pressure upper limit adjustment ring 15 and threshold pression adjustment ring 14, can regulate the pressure upper limit alarming value of sensor and threshold pression alarming value.
As shown in Figure 3, give trigger terminal and upper, the structure chart that threshold pression adjustment ring matches, shown threshold pression adjustment ring 14 and the inwall of pressure upper limit adjustment ring 15 all offer two annular slots 27, trigger terminal 18 has two electrodes to form, two electrodes are fixed on collets 26, collets 26 are provided with the fixture block 28 matched with annular slot 27, in the process of assembling, by pressure upper limit adjustment ring 15, threshold pression adjustment ring 14 is placed in after on checkout gear head protector 16, trigger terminal 18 snaps onto in annular slot 27 through after vertical slot 22, trigger terminal 18 can be realized upper, activity in threshold pression adjustment ring is fixed.
The detection method of fire hydrant on-line monitoring navigation system of the present invention, is realized by following steps:
A). system initialization self-inspection, after system is opened, first MCU controller initializes and the coupled modules of self-inspection, enters step b after errorless);
B). system enters resting state, and under the control action of MCU controller, whole system enters resting state;
C). whether there is pressure limit interrupt signal to export, whether mechanical compression overrun testing sensor detects that the hydraulic pressure in fire hydrant reaches higher limit or lower limit, if reach higher limit or lower limit, then send interrupt signal to MCU controller, perform steps d);
D). produce hydraulic pressure overload alarm signal, after MCU controller receives the upper limit or lower limit alarm signal, by GPRS communication module, Ethernet, alarm signal is sent to PC main control system, alarm signal is sent to the mobile terminal of staff by PC main control system by short message alarm module; If reported to the police for force value surpasses lower limit, then show the not enough or lack of water of hydraulic pressure in fire hydrant, if surpass upper limit alarm for force value, then show the hypertonia in fire hydrant, should check and keep in repair in the scene of sending someone in time;
In this step, the alarm signal that MCU controller sends comprises the geographical location information of fire hydrant and the super upper limit or super lower limit information,
E). judge whether timing cycle, judge whether the timing cycle T reaching periodic awakening impulse generator, if reached, then MCU controller wakes the work of electronic water pressure sensor up, gathers fire hydrant inner pipe water pressure, performs step f);
In this step, described timing cycle T is 8 hours, 12 hours or 24 hours;
F). transmit pressure value signal, the pressure value signal of collection is sent on PC main control system by GPRS communication module, Ethernet by MCU controller, the fire hydrant hydraulic signal of collection is sent on the mobile terminal of staff by PC main control system again, to realize the measurement of fire hydrant hydraulic pressure numerical value.
8. the detection method of fire hydrant on-line monitoring navigation system according to claim 7, is characterized in that: step e) in.