CN109653884A - Fire engine water-pump voltage-stabilization system - Google Patents
Fire engine water-pump voltage-stabilization system Download PDFInfo
- Publication number
- CN109653884A CN109653884A CN201710944825.2A CN201710944825A CN109653884A CN 109653884 A CN109653884 A CN 109653884A CN 201710944825 A CN201710944825 A CN 201710944825A CN 109653884 A CN109653884 A CN 109653884A
- Authority
- CN
- China
- Prior art keywords
- fire
- water
- control circuit
- engine
- acquisition device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/04—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
- F02D2200/502—Neutral gear position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/60—Input parameters for engine control said parameters being related to the driver demands or status
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The present invention relates to fire engine water-pump voltage-stabilization technical fields, in particular to fire engine water-pump voltage-stabilization system, fire engine water-pump voltage-stabilization system has brake signal acquisition device and/or neutral gear signal acquisition device, the main control circuit can judge whether fire fighting truck is in braking state or neutral state according to the signal of the brake signal acquisition device and/or neutral gear signal acquisition device got, when fire fighting truck is not in braking state and/or neutral state, then stop the work of main control circuit, stop control of the water-pump voltage-stabilization system to fire-fighting truck engine, therefore fire fighting truck is under driving states, its engine not will receive the control of fire pump voltage-stabilizing system, the reliability and stability of manipulation can be ensured to drive, effectively eliminate influence of the water-pump voltage-stabilization system to fire-fighting garage vehicle, it avoids because of water-pump voltage-stabilization system bring It drives out of control.
Description
Technical field
The present invention relates to fire engine water-pump control technology fields, in particular to fire engine water-pump voltage-stabilization system.
Background technique
In the prior art, domestic natural disaster and emergency event are more and more in recent years, and the fire-fighting equipment of rescue and relief work obtains
To more and more concerns；Fire fighter is needed during people's disaster relief is rescued in fire-fighting, and accurately manipulation fire-fighting fills in the shortest time
It is standby, so that fire-fighting equipment is given full play to its performance to reach and rescue people's disaster relief purpose.
It is to rely on fire fighter to turn by directly adjustment engine mostly however in current fire vehicle water pump control system
Speed adjusts the revolving speed of water pump, hydraulic pressure fire extinguishing actually required is then adjusted according to pressure gauge, this is not only complicated for operation, adjusts
Inaccuracy, and water pump may need to connect hydraulic giant in varying numbers and lead to flow according to different situations in practical rescue operations
It changes, and the variation of flow then causes pressure to change, fire fighter needs to adjust revolving speed repeatedly just to adapt to pressure
Demand, whole process need to adjust repeatedly, complicated, so that fire-fighting efficiency is low, the fire-fightings for wasting a large amount of preciousnesses are rescued for cumbersome operation
Help the time.
For this purpose, Chinese patent 201320200234.1 discloses a kind of CAN bus based fire engine water-pump voltage-stabilization control
System, the system obtain the pressure signal of exit of pump by CAN bus, adjust fire-fighting truck engine according to the pressure signal
The power of revolving speed, engine output is transferred to water pump by a transmission mechanism, to adjust the pressure of water pump.The system passes through
Aforesaid way realizes the automatic control to fire fighting truck water-aspirator pressure, but has also discovered some problems in practical applications: by
Power is provided in the pressure adjusting of water pump is the engine of dependence fire fighting truck, therefore, voltage-stabilization control system is to fire fighting truck
The control of engine will affect the driving manipulation of fire fighting truck, and particularly, (water-pump voltage-stabilization regulating system is logical during fire-fighting operation
It is often in running order), emergency running fire fighting truck often is needed because of the variation of site environment, at this time if fire fighting truck
Testing pump system is easy to cause fire fighting truck Driving control out-of-control phenomenon occur the control of engine, and then leads to fire-fighting thing
Therefore.
Summary of the invention
One kind is provided and will not influence fire fighting truck it is an object of the invention to avoid above-mentioned shortcoming in the prior art
Driving manipulation, to effectively avoid driving fire engine water-pump voltage-stabilization system out of control, it should be noted that the present invention is only
Hardware configuration needed for providing the system, those skilled in the art can be on the basis of the hardware configurations by being rationally arranged
Electric elements write the mode of program to realize corresponding method for stabilizing voltage.
Invention thinking: finding in practice, in fire engineering, (usually puts out a fire when if necessary to pump working
Operation), fire-fighting vehicle is typically in dead ship condition, namely is in braking state or neutral state, if fire fighting truck is in row
State is sailed, then does not need fire-fighting operation generally, even if needing fire-fighting operation, engine should also be as the row for being preferentially used for vehicle at this time
Needs are sailed, therefore, when fire fighting truck is not in braking state or neutral state, stop control of the water-pump voltage-stabilization system to engine
System, it will be able to ensure that engine will not be influenced fire fighting truck by water-pump voltage-stabilization system in motion, another aspect water-pump voltage-stabilization system
System reaches voltage regulation result to also can effectively control engine in fire-fighting job engineering.
The purpose of the present invention is achieved through the following technical solutions:
Fire engine water-pump voltage-stabilization system is provided, including main control circuit, the exit of pump pressure connecting with main control circuit
Force snesor, engine and engine control module sense when the main control circuit works according to the water pump discharge pressure
The detected value of device outputs control signals to the engine control module, to control the revolving speed of the engine, and then adjusts
The output hydraulic pressure of water pump, the main control circuit include brake signal acquisition device and/or neutral gear signal acquisition device, the master
Control circuit is to determine according to the signal of the brake signal acquisition device and/or neutral gear signal acquisition device got
It is no to stop working.
Wherein, the main control circuit is exported the signal of controlling to engine control mould by CAN bus
Block.
Wherein, the main control circuit includes that parking brake signal acquisition device and/or neutral gear signal acquisition device are total by CAN
Line obtains brake signal and/or neutral gear signal.
Wherein, the main control circuit further includes PTO signal acquisition device, and the main control circuit is also according to the PTO
Signal that signal acquisition device is got determines whether work.
Beneficial effects of the present invention: fire engine water-pump voltage-stabilization system of the invention have brake signal acquisition device and/or
Neutral gear signal acquisition device, the main control circuit is according to the brake signal acquisition device and/or neutral gear signal acquisition device
The signal got can judge whether fire fighting truck is in braking state or neutral state, when fire fighting truck is not in brake shape
When state and/or neutral state, then stop the work of main control circuit, i.e. control of the stopping water-pump voltage-stabilization system to fire-fighting truck engine
System, therefore fire fighting truck, under driving states, engine not will receive the control of fire pump voltage-stabilizing system, it can be ensured that drive behaviour
The reliability and stability of control effectively eliminate influence of the water-pump voltage-stabilization system to fire-fighting garage vehicle, avoid because water pump is steady
Pressure system bring drives out of control.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings, but the embodiment in attached drawing is not constituted to any limit of the invention
System, for those of ordinary skill in the art, without creative efforts, can also obtain according to the following drawings
Other attached drawings.
Fig. 1 is a kind of circuit block diagram of the embodiment of CAN bus based fire engine water-pump voltage-stabilization control system of the present invention.
Specific embodiment
The invention will be further described with the following Examples.
The specific embodiment of fire engine water-pump voltage-stabilization system of the present invention, as shown in Figure 1, including mutual by CAN bus
The pressure stabilizing control module and engine control module of connection.Wherein pressure stabilizing control module includes interactive terminal, main control circuit and
Water pump discharge pressure sensor, all kinds of parameter values (such as the water-aspirator pressure preset value) transmission that interactive terminal inputs operator
To main control circuit, which is simultaneously sent to main control circuit by water pump discharge pressure sensor detection water pump discharge pressure value
In, main control circuit includes that brake signal obtains port, neutral gear signal acquisition port and PTO signal acquisition port, and master control
Circuit processed is connected with CAN bus, correspondingly, fire fighting truck further includes the brake signal generating means connecting with CAN bus, neutral gear letter
Number generating means and PTO signal generating apparatus (not shown), brake signal generating means, neutral gear signal generating apparatus and PTO
Brake signal, neutral gear signal and PTO signal are sent in CAN bus by signal generating apparatus, the brake signal of main control circuit
Obtain brake signal, sky that port, neutral gear signal acquisition port and PTO signal acquisition port obtain fire fighting truck by CAN bus
Shelves signal and PTO signal (power output signal), certainly, main control circuit can also obtain its of fire fighting truck by CAN bus
His automatically controlled signal.Main control circuit at work, control signal, control letter is exported according to the water pump discharge pressure value got
Number be sent to engine control module through CAN bus, engine control module according to the revolving speed of the control Signal Regulation engine,
To adjust the pressure of water pump.
Specifically, main control circuit executes following methods, following methods can realize by electric controling mode, can also be with
It is realized by computer programming:
Step A: obtaining water pump discharge pressure value, and the revolving speed of the engine of fire fighting truck is adjusted according to water pump discharge pressure value,
To regulating water pump pressure；Pid algorithm is mainly used in step A, principle can refer to Chinese patent 201320200234.1,
Details are not described herein.While executing step A, main control circuit also executes following steps:
Step B: by CAN bus acquire fire fighting truck all types of signals, the present embodiment acquire fire fighting truck brake signal,
Neutral gear signal, PTO signal (power output signal), water pot liquid level signal and with this inlet pressure level of water, adopted by CAN bus
Collecting above-mentioned signal is, to preset signals acquisition time is acquired each time, if do not collected within the preset signal acquisition time
Corresponding signal, then judgement is when time the signal Transmission of acquisition or error, and uses last collected signal conduct
When secondary signal；
Step C: judging whether fire fighting truck is in braking state according to brake signal, judges that fire fighting truck is according to neutral gear signal
No to be in neutral state, more PTO signal judges whether the water pump of fire fighting truck is in running order, if the fire fighting truck is not located
In braking state or it is not in neutral state or water pump is not in working condition, then the work of main control circuit (stops step
Rapid A)；In the present embodiment, brake signal and neutral gear signal are mainly used for judging whether fire fighting truck drives, and are in and drive in fire fighting truck
The state of sailing is off pressure stabilizing control work, to avoid the influence driven to fire fighting truck, PTO signal is used to judge the water of fire fighting truck
Whether pump is in running order, and in the case where fire engine water-pump does not work, pressure stabilizing control is meaningless, also will affect fire fighting truck
Other function, therefore in the case where fire engine water-pump does not work, it is same to stop pressure stabilizing control work, it should be noted that though
Right the present embodiment uses three signals to determine whether to stop pressure stabilizing control, but in practical applications, those skilled in the art
Member also can according to need and select one of those or two only to be judged.
Step D: judging the level value of water pot according to water pot liquid level signal, if the liquid level in water pot is lower than default liquid level
Value, then reduce the revolving speed of the engine of the fire fighting truck；
Step E: if the inlet pressure level of fire engine water-pump be greater than system preset value, open the diversion valve of water pump with
The air in water pump is discharged；Step D and step E primarily to prevent from sucking too many air in water pump and leading to water hammer effect,
Therefore, it is easy to be mixed into more air when water level is lower in water pot, in water pump, therefore reduces engine speed to avoid danger hair
It is raw, it is simultaneously emitted by warning, and when the inlet pressure level of water pump is greater than the preset value of system, then illustrate to be mixed into water pump
More air, therefore system control opens the diversion valve of water pump the air in water pump is discharged, to eliminate danger.
Finally it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than the present invention is protected
The limitation of range is protected, although explaining in detail referring to preferred embodiment to the present invention, those skilled in the art are answered
Work as understanding, it can be with modification or equivalent replacement of the technical solution of the present invention are made, without departing from the reality of technical solution of the present invention
Matter and range.
Claims (4)
1. fire engine water-pump voltage-stabilization system, including main control circuit, the water pump discharge pressure sensor being connect with main control circuit,
Engine and engine control module, according to the detected value of the water pump discharge pressure sensor when main control circuit works
The engine control module is output control signals to, to control the revolving speed of the engine, and then adjusts the output of water pump
Hydraulic pressure, it is characterised in that: the main control circuit includes brake signal acquisition device and/or neutral gear signal acquisition device, described
Main control circuit is to determine according to the signal of the brake signal acquisition device and/or neutral gear signal acquisition device got
It is no to stop working.
2. fire engine water-pump voltage-stabilization system as described in claim 1, it is characterised in that: the main control circuit is total by CAN
Line exports the signal of controlling to the engine control module.
3. fire engine water-pump voltage-stabilization system as described in claim 1, it is characterised in that: the main control circuit includes parking brake letter
Number acquisition device and/or neutral gear signal acquisition device pass through CAN bus and obtain brake signal and/or neutral gear signal.
4. fire engine water-pump voltage-stabilization system as described in claim 1, it is characterised in that: the main control circuit further includes PTO
Signal acquisition device, signal that the main control circuit is got also according to the PTO signal acquisition device determine whether work
Make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710944825.2A CN109653884A (en) | 2017-10-12 | 2017-10-12 | Fire engine water-pump voltage-stabilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710944825.2A CN109653884A (en) | 2017-10-12 | 2017-10-12 | Fire engine water-pump voltage-stabilization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109653884A true CN109653884A (en) | 2019-04-19 |
Family
ID=66108463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710944825.2A Pending CN109653884A (en) | 2017-10-12 | 2017-10-12 | Fire engine water-pump voltage-stabilization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109653884A (en) |
-
2017
- 2017-10-12 CN CN201710944825.2A patent/CN109653884A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190419 |
|
| WD01 | Invention patent application deemed withdrawn after publication |