CN101608614B - Fire pump discharge pressure full-automatic balancing system - Google Patents
Fire pump discharge pressure full-automatic balancing system Download PDFInfo
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- CN101608614B CN101608614B CN2009101574816A CN200910157481A CN101608614B CN 101608614 B CN101608614 B CN 101608614B CN 2009101574816 A CN2009101574816 A CN 2009101574816A CN 200910157481 A CN200910157481 A CN 200910157481A CN 101608614 B CN101608614 B CN 101608614B
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Abstract
The invention discloses a fire pump discharge pressure full-automatic balancing system, which comprises a CPU microprocessor, a power isolation voltage stabilizing module, a power isolation module and an operation panel, wherein the operation panel and the power isolation voltage stabilizing module are respectively connected to the CPU microprocessor; the fire pump outlet pressure full-automatic balancing system also comprises a pressure sensor connected to the CPU microprocessor through an operational amplifier, a rotational speed sensor connected to the CPU microprocessor through a photocoupling module; the power isolation module is respectively connected to the pressure sensor and the rotational speed sensor; and the CPU microprocessor is connected to an automobile ECU accelerator control port through a high-isolation photocoupling amplifier. Compared with the prior art, the fire pump outlet pressure full-automatic balancing system has the advantages of using the method for controlling the vehicle-mounted fire pump pressure through changing the rotational speed of an automobile engine to automatically balance the working pressure of the fire pump under the set pressure of a user, thereby changing a plurality of defects caused by manual pressure adjusting and mechanical pressure balancing of the vehicle-mounted fire pump. The fire pump outlet pressure full-automatic balancing system has the advantages of accurate balancing pressure numerical value, short balancing time and easy mounting.
Description
Technical field
The present invention relates to used in fire-fighting fire pump discharge system, particularly a kind of fire pump discharge pressure full-automatic balancing system.
Background technique
The control of fire pump discharge pressure is fully paid attention to by industry in recent years, how to guarantee fire-protection equipment and fire personnel's safety in the fire extinguishing operating process, is also paid close attention to.GB GB7956-2008 (tentative original text) has proposed requirements at the higher level to safety how to protect fire-protection equipment and fire personnel.
Because the discreteness of fire water pump parameter, the complexity at fire-fighting fire extinguishing scene, and the carelessness of the hasty operation of fire personnel, when fire-fighting fire extinguishing, fire pump discharge pressure usually occurs and raise suddenly, cause the explosion of fire-extinguisher water hose superpressure, and the hydraulic giant kick increases suddenly, cause injury, and fire equipments causes the phenomenon of damage to the fire personnel; And the pressure of suppression system can reduce (as: the fire-fighting monitor flow increases, pressure water outlet increase etc.) suddenly and makes on-the-spot fire extinguishing deleterious sometimes, loses best fire extinguishing opportunity, causes damage to the people's lives and property.
What traditional fire pump discharge pressure balance adopted is: produce the principle of being out of shape after utilizing the spring pressurized, the Equilibrator that one cover mainly is made up of spring is set in the fire water pump outlet port, the spring pressurized produced deformation when pressure raise, open control valve, the over pressure water pump entrance place that releases, after pressure balance, the spring reset throttle down has reached the pressure balance purpose.This device disadvantage: in a single day 1, regulate predetermined pressure, outlet system just can only be operated under this pressure, if will change to other pressure control point, need to regulate repeatedly, and the institute amateur factory of pressure regulation power can't demarcate; 2, this device volume is big, the pipeline complexity, and annex is many, gives to install and use and brings very big inconvenience; 3, balance pressure point pressure numerical value is inaccurate, equilibrium time long (about 5-7 second); Do not work when 4, discharge pressure reduces.
Regulating the fire water pump rotating speed at present all is to regulate by manual accelerator control, utilizes steel wire, spring to remove to spur the mechanical type air throttle of car, goes to change engine speed.On state III emission standard electronic fuel injection engine, then be to utilize steel wire, spring to go to spur gas pedal, to go to change the relative position of throttle position switch and change engine speed, method is very backward, and reliability is very poor, installs very loaded down with trivial details.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned prior art present situation, and to provide a kind of balance pressure numerical value standard, equilibrium time weak point, easy-to-install fire pump discharge pressure full-automatic balancing system.
The present invention solves the problems of the technologies described above the technological scheme that is adopted: a kind of fire pump discharge pressure full-automatic balancing system comprises CPU microprocessor, isolated from power Voltage stabilizing module, power isolation module, operation panel; Described operation panel, isolated from power Voltage stabilizing module insert described CPU microprocessor respectively, it is characterized in that: also comprise the pressure transducer that inserts described CPU microprocessor once operational amplifier; Insert the speed probe of described CPU microprocessor once the photoelectricity coupling module; Described power isolation module inserts described pressure transducer, speed probe respectively; Described CPU microprocessor inserts an automobile ECU Throttle Opening Control port through a high optocoupler amplifier of isolating.
Described CPU microprocessor also connects a liquid crystal display.
Described CPU microprocessor comprises signal gathering unit, signal sampling unit, recognition unit, processing unit, arithmetic element, amplifying unit, output unit; Described signal sampling unit, recognition unit, arithmetic element, processing unit electricity successively are linked in sequence, described recognition unit, processing unit, amplifying unit, output unit order successively are electrically connected, described processing unit is electrically connected signal gathering unit, output unit respectively, and described signal gathering unit inserts described recognition unit.
Described speed probe is the Sai Pulasi Hall transducer; Described CPU microprocessor is the grand basic single-chip microcomputer of stc12c5412ad.
Compared with prior art, the invention has the advantages that, go to control the method for vehicle mounted fire pump pressure with the change rotating speed of automobile engine, realize fire water pump working pressure autobalance under user's setting pressure, fundamentally changed vehicle mounted fire pump manual tune pressure, the existing many disadvantages of mechanical compression balance; Balance pressure numerical value standard of the present invention, equilibrium time weak point are easy to install.
Description of drawings
Fig. 1 is the circuit structure block diagram of the embodiment of the invention;
Fig. 2 is the CPU microprocessor circuit structured flowchart among Fig. 1;
Fig. 3 is the programming flow diagram of the CPU microprocessor among Fig. 1;
Fig. 4 is the control principle figure of the embodiment of the invention;
Fig. 5 is the output waveform figure of the throttle control signal of the embodiment of the invention.
Embodiment
According to embodiment and accompanying drawing the present invention is described in further detail below.
Shown in Fig. 1 to 5, a kind of fire pump discharge pressure full-automatic balancing system comprises CPU microprocessor 1, isolated from power Voltage stabilizing module 2, power isolation module 3, operation panel 4, liquid crystal display 5; Described liquid crystal display 5, operation panel 4, isolated from power voltage stabilizing mould certainly 2 insert described CPU microprocessor 1 respectively;
Also comprise the pressure transducer 7 that inserts described CPU microprocessor once operational amplifier 6; Insert the speed probe 9 of described CPU microprocessor 1 once photoelectricity coupling module 8; Described power isolation module 3 inserts described pressure transducer 7, speed probe 9 respectively; Described CPU microprocessor 1 inserts an automobile ECU Throttle Opening Control port one 01 through a high optocoupler amplifier 100 of isolating; Referring to Fig. 1.
Described CPU microprocessor 1 comprises signal gathering unit 11, signal sampling unit 12, recognition unit 13, arithmetic element 14, processing unit 15, amplifying unit 16, output unit 17; Described signal sampling unit 12, recognition unit 13, arithmetic element 14, processing unit 15 electricity successively are linked in sequence, described recognition unit 13, processing unit 15, amplifying unit 16, output unit 17 order successively are electrically connected, described processing unit 15 is electrically connected signal gathering unit 11, output unit 17 respectively, and described signal gathering unit 11 inserts described recognition unit 13.Referring to Fig. 2.
Described speed probe 9 is the Sai Pulasi Hall transducer; Described CPU microprocessor 1 is the grand basic single-chip microcomputer of stc12c5412ad.
Working principle of the present invention is as follows:
Shown in Fig. 1 to 5, utilize the CPU programming technique, inventor's design concept control strategy is stored in CPU inside by the program source code mode, with hardware whole system is organically coupled together, come caller by key operation, finish the pressure balance purpose.
The input power supply provides working power through isolated from power Voltage stabilizing module 2 for CPU microprocessor 1; The input power supply provides working power through power isolation module 3 for pressure transducer 7, speed probe 9; What speed probe 9 adopted is CYPRESS3013 Sai Pulasi Hall transducer, is installed in power take-off and water pump transmission shaft top, and the method indigo plant that the strong magnetic of neodymium iron boron is housed is fixed on the transmission shaft, with sensor relative position＜3mm.Hall transducer has waterproof and dustproof, against shock characteristic, adapts under the rugged environment to use.Handle being input to speed probe 9 signals sampling. voltage DC24V, the pulse of output high-low level, revolution picks up six pulse signals, and display precision＜2 ‰ have solved that slow-speed of revolution counting in the existing rotating speed Display Technique is inaccurate, numeral is flashed disadvantage.Output pulse signal after 9 pairs of input signal sampling processing of speed probe, through photo coupler 8, output to the INTO end of CPU microprocessor 1, after CPU microprocessor 1 internal processes is handled signal operation, output to liquid crystal display 5, demonstrate the real work rotating speed of fire water pump, satisfied the related request of GB7956-2008 standard in the design.Pressure transducer 7 adopts TO2 series precision pressure sensor, the system pressure signal that samples, through operational amplifier 6 with the emitter-base bandgap grading way of output, send to the PIO/AIC0 end of CPU microprocessor 1, the various interference of filtering effectively accurately stably offer system to the fire water pump actual pressure on the circuit design.Pressure range: 0～2.5Mpa, the output of 4～20ma normalized current, stainless steel material manufacturing, corrosion-resistant, vibration resistance, standard thread interface.
The present invention is provided with " manually " " automatically " operator scheme, and it is characterized in that only needs two buttons of operation, can switch easily.Click " manually " button, (the 5V voltage of isolated from power Voltage stabilizing module 2 outputs connects the button input end to high level signal, button output termination integration circuit, pushing back contact connects) deliver to the INT1 end of CPU microprocessor 1, internal processes sends manual command after to signal processing, whole system is operated in manual mode, this moment setting pressure button locked inoperative display screen not display setting pressure and show "; manually ", the throttle button works, according to different pressures require to press throttle pressure port+or-button.
Click " automatically " button, high level signal is delivered to the TO end of CPU microprocessor 1, internal processes to signal processing after, send automatic command, whole system is operated under " automatically " pattern.It is characterized in that; Throttle+or-button is inoperative, and the setting pressure button is set pressure and is shown on showing, whenever pushes variation in pressure 0.1Mpa one time, excursion: 0.-2Mpa, and can " dynamically " adjust setting pressure.Under (fire water pump can be set in fire extinguishing procedure as required at any time) automatic mode, the setting program of CPU microprocessor 1 inside sends a series of instructions: setting pressure and system pressure are compared, according to comparative result, the output throttle control signal, remove to change rotating speed of automobile engine, thereby changed the pressure of fire water pump, this process is being carried out all the time, guarantees that system pressure is consistent with the setting pressure balance.
The employing parallel input mode is switched in " manually " " automatically ", and which kind of pattern no matter signal be operated under in no particular order, as long as there is high level signal to send from manual, automatic, button, CPU microprocessor 1 is just carried out the instruction of sending immediately.Dynamically the theory of setting has improved system's operability, rapidity greatly.
The throttle control signal that the PMMO end output of CPU microprocessor 1 can be complementary with the ECU Throttle Opening Control port of most of state III electronic fuel injection engine, after the coupling of LM358D emitter-base bandgap grading is amplified, deliver to the high optocoupler amplifier 100 of isolating, output and the throttle control signal that whole system is isolated fully, carrying load ability is strong insert automobile ECU Throttle Opening Control port one 01.The throttle signal waveform of output is according to automobile engine characteristics and fire water pump pressure control characteristic particular design.It is characterized in that:, export rotating speed a--pressure controling signal that can mate, can adapt to again the fire water pump performance requirement fully with motor car engine ECU Throttle Opening Control end according to pressure balance requirement and the manual function in the balance sysmte.To handle this signal well be most important design concept of the present invention, be the key that realizes the full-automatic pressure balance.Referring to Fig. 5, Fig. 6.
Claims (2)
1. a fire pump discharge pressure full-automatic balancing system comprises CPU microprocessor (1), isolated from power Voltage stabilizing module (2), power isolation module (3), operation panel (4); Described operation panel (4), isolated from power Voltage stabilizing module (2) insert described CPU microprocessor (1) respectively, it is characterized in that: also comprise the pressure transducer (7) that inserts described CPU microprocessor once operational amplifier (6); Insert the speed probe (9) of described CPU microprocessor (1) once photoelectricity coupling module (8); Described power isolation module (3) inserts described pressure transducer (7), speed probe (9) respectively; Described CPU microprocessor (1) inserts an automobile ECU Throttle Opening Control port (101) through a high optocoupler amplifier (100) of isolating, wherein, described CPU microprocessor (1) comprises signal gathering unit (11), signal sampling unit (12), recognition unit (13), arithmetic element (14), processing unit (15), amplifying unit (16), output unit (17); Described signal sampling unit (12), recognition unit (13), arithmetic element (14), processing unit (15) electricity successively are linked in sequence, described recognition unit (13), processing unit (15), amplifying unit (16), output unit (17) order successively are electrically connected, described processing unit (15) is electrically connected signal gathering unit (11), output unit (17) respectively, and described signal gathering unit (11) inserts described recognition unit (13).
2. fire pump discharge pressure full-automatic balancing system according to claim 1 is characterized in that: described CPU microprocessor (1) also connects a liquid crystal display (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101574816A CN101608614B (en) | 2009-07-31 | 2009-07-31 | Fire pump discharge pressure full-automatic balancing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101574816A CN101608614B (en) | 2009-07-31 | 2009-07-31 | Fire pump discharge pressure full-automatic balancing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101608614A CN101608614A (en) | 2009-12-23 |
| CN101608614B true CN101608614B (en) | 2011-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101574816A Expired - Fee Related CN101608614B (en) | 2009-07-31 | 2009-07-31 | Fire pump discharge pressure full-automatic balancing system |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102236357A (en) * | 2010-05-06 | 2011-11-09 | 徐晓光 | Constant-pressure control device of fire truck |
| CN102374162A (en) * | 2010-08-25 | 2012-03-14 | 上海博灿信号设备有限公司 | Water outlet pressure full-automatic control protective system of fire pump |
| CN101995501B (en) * | 2010-10-09 | 2012-07-04 | 佛山市中格威电子有限公司 | Testing method and circuit capable of separating power source, input signals and output signals |
| CN102493949B (en) * | 2011-11-30 | 2015-04-15 | 中国科学院自动化研究所 | Fire vehicle water pump control system |
| CN103004729A (en) * | 2012-12-06 | 2013-04-03 | 安徽工程大学 | Pesticide spraying barrel with full-automatic pressure balance |
| CN108131282A (en) * | 2017-12-21 | 2018-06-08 | 龙岩畅丰专用汽车有限公司 | A kind of constant-pressure control device |
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2009
- 2009-07-31 CN CN2009101574816A patent/CN101608614B/en not_active Expired - Fee Related
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| CN101608614A (en) | 2009-12-23 |
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Granted publication date: 20110803 Termination date: 20170731 |