CN207946182U - Control system based on the portable ship electronic indicators of ARM - Google Patents
Control system based on the portable ship electronic indicators of ARM Download PDFInfo
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- CN207946182U CN207946182U CN201721434197.5U CN201721434197U CN207946182U CN 207946182 U CN207946182 U CN 207946182U CN 201721434197 U CN201721434197 U CN 201721434197U CN 207946182 U CN207946182 U CN 207946182U
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Abstract
Based on the control system of the portable ship electronic indicators of ARM, including cylinder pressure sensor, crank angle sensor, ARM controller, industrial personal computer, display screen, keyboard, file management controller；It is characterized in that：The cylinder pressure sensor, crank angle sensor are electrically connected by signal processing circuit with ARM controller；The keyboard is used to input instruction and shows that another way uploads industrial personal computer by serial communication modular by display screen all the way to ARM controller and by the parameter signal that ARM controller is handled；The ARM controller is also connect with printer；The file management controller is connected with ARM controls, is used for reading and writing of files.Directly the data acquired are handled using the data processing speed and ability of ARM, timeliness higher；Improve the practicability of system function and the economy of equipment cost.
Description
Technical field
The utility model is related to a kind of novel portable electronics to show work(device, portable based on ARM more particularly, to one kind
The control system of ship electronic indicator.
Background technology
Diesel engine is due to having many advantages, such as that the thermal efficiency is high, power application range is wide, compact-sized being widely used in ship
As main and auxiliaries power-equipment.Discharge, economy, durability and can will more be paid attention to the research and development of diesel engine
By various aspects such as property.The research of the combustion process of diesel engine be unable to do without measuring for indicator card, and indicator card is working medium pressure in cylinder
The figure that power changes with crank angle, cylinder pressure carry a large amount of useful informations of diesel engine combustion, and and diesel oil
The performance indicator and evaluation parameter of the machine course of work have close relationship, the running parameter of each cylinder, performance indicator, discharge index
Etc. differences be all reflected on cylinder pressure in whole or in part.It is both study working process of diesel engine degree of perfection it is important according to
According to, and for calculating the foundation of diesel engine indicated horsepower, can be used as the money of diesel engine Strength co-mputation and Cable Power Computation
Material.Cylinder of diesel engine combustion process, Combustion Release Heat can be studied by indicator card, cylinder temperature, diesel engine power is calculated, comments
Estimate scavenging process, determines diesel engine maximum combustion pressure and compression pressure etc..Since indicator card can show bavin with image format
Oil machine in-cylinder process, and measuring instrument is simple and practical, while bavin is judged according to the calculating of indicator card and analysis result
The working performance of oil machine, and adjustment appropriate can be carried out to diesel engine, ensure that diesel oil function operates under optimum, improves warp
Ji property, reliability and dynamic property.However, being used to measure the test system of diesel engine performance in the prior art, there is also much not
The defects of foot cannot be implemented to read or be written, change parameter if its system does not open, and measurement accuracy is not high.
Utility model content
The utility model solves deficiency in the prior art, devises one kind and showing work(based on the portable ship electronics of ARM
The control system of device, its technical solution is as follows：
Based on the control system of the portable ship electronic indicators of ARM, including cylinder pressure sensor, crank angle sensor,
ARM controller, industrial personal computer, display screen, keyboard, file management controller；It is characterized in that：The cylinder pressure sensor, crank angle
Sensor is electrically connected by signal processing circuit with ARM controller；The keyboard is for inputting instruction to ARM controller and inciting somebody to action
The parameter signal of ARM controller processing shows that another way uploads industrial personal computer by serial communication modular by display screen all the way；Institute
ARM controller is stated also to connect with printer；The file management controller is connected with ARM controls, is used for reading and writing of files.
Preferably：The cylinder pressure sensor uses model KISTLER6125C pressure sensors, input signal
PRESSURE is charge signal；The charge signal after charge amplifying circuit, signaling conversion circuit, signal conditioning circuit,
Charge signal is converted into voltage signal；The voltage signal is after being isolated pick-up conversion module, by selecting switch, by cylinder pressure
The pressure signal of sensor acquisition is transmitted to ARM input/output end ports.
Preferably：The isolation pick-up conversion module output end connects a selecting switch S0, the output of the selection switch S0
The input/output end port of end connection ARM controller：PB0, PB1, ARM controller are selected by the dial position difference of selecting switch S0
Select different input branches.
Preferably：The crank angle sensor uses model KISTLER2613B crank angle sensor, the sensing
Device is mounted on diesel engine free end, measures rotating speed and is not less than 15000rpm, measures drift error and is not more than 0.05 °C of A；The song
The angular signal of acquisition is changed into pulse signal by the output signal of shaft rotation angle transducer after signal processing circuit.
Preferably：The ARM controller is with model：STM32F103 chips core in order to control.
Preferably：Further include USB interface, the USB interface is connect with ARM controller.
Preferably：The file management controller uses CH376S document control chips；The serial communication modular uses
MAX232 chips.
Advantageous effect：Directly the data acquired are handled using the data processing speed and ability of ARM, timeliness
Higher；Improve the practicability of system function and the economy of equipment cost.
Description of the drawings
Fig. 1 is Tthe utility model system entire block diagram.
Fig. 2 is the utility model charge amplifier circuit schematic diagram.
Fig. 3 is the utility model subtraction circuit.
Fig. 4 is the utility model isolation pick-up conversion module.
Fig. 5 is the utility model cdm signal finishing circuit.
Fig. 6 is the utility model TRG trigger signal finishing circuits.
Fig. 7 is the utility model keyboard circuit figure.
Fig. 8 is that the utility model ARM minimum systems and port connect circuit diagram.
Fig. 9 is 4.3 inch TFT liquid crystal interface circuit diagrams of the utility model.
Figure 10 is that the utility model CH376S is that file management controls chip interface circuit.
Figure 11 is the utility model 3.3V regulator circuit schematic diagrams.
Figure 12 is the utility model electric source filter circuit circuit diagram.
Specific implementation mode
Shown in attached drawing 1.Based on the control system of the portable ship electronic indicators of ARM, including cylinder pressure sensor, song
Shaft rotation angle transducer, ARM controller, industrial personal computer, display screen, keyboard, it is characterized in that：Cylinder pressure sensor, crank angle sensor
It is connect with ARM controller by signal processing circuit；The keyboard passes through ARM controller for inputting instruction to ARM controller
The parameter signal of processing can show that another way uploads industrial personal computer by serial port module by display screen all the way；The ARM controller
Also it is connect with printer.
The measuring cells such as cylinder pressure sensor, crank angle sensor are mounted on diesel engine indicator valve and free end, to pressure
It is measured with corner, signal measured by sensor is used as Signal-regulated kinase input by cable and is directly linked.Signal
Conditioning module passes through noise reduction and level conversion, and signal can be received by converting a signal into ARM, and be read by the ports I/O of ARM
Enter.4.3 inch TFT liquid crystal displays are linked by the ports I/O of ARM, show the result of handled data.Key-press module is logical
The ports I/O for crossing ARM carry out link as data entry terminal.File management control chip CH376 passes through serial communication interface
It is connected with the ports I/O with ARM.Printer is connected by the ports I/O with printer.The system can with independent operating also with
Computer is connected, and the computer is industrial personal computer.
Embodiment 1
Cylinder pressure sensor uses model KISTLER6125C cylinder pressure sensors, sensor installation to show work(with marine diesel
On valve, for measuring in-cylinder pressure.Pressure-bearing maximum value is not less than 300bar, and 250 degrees Celsius, temperature drift errors are more than 1%.It passes
Sensor is mounted on diesel engine indicator valve port for measuring pressure in diesel engine inside cylinder.
Signal PRESSURE from cylinder pressure sensor KISTLER6125C is charge signal, for the diesel engine combustion detected
Cylinder pressure during burning.Since the cylinder pressure sensor KISTLER6125C signals detected are charge signal, need its turn
Voltage signal is changed into measure.Include charge amplifier circuit, subtraction circuit, isolation pick-up to cylinder pressure sensor signal processing
Conversion module IPO EM-10-P-3.3.
Shown in attached drawing 2-4, the quantity of electric charge very little of piezoelectric transducer output integrates fortune for that can realize impedance matching
The LF356 chips using ST companies are put, which is broadband type junction field high input impedance operational amplifier, with
Technotron has high input impedance, Low-bias Current and low input offset current as input stage.
The circuit that U10A is formed is charge conversion module.Wherein resistance R60 is brought into cable transmission for eliminating
Noise jamming.U10A, feedback capacity C61 and feedback resistance R62 form charge conversion circuit, pressure sensor
The charge signal that KISTLER6125C is measured is converted into voltage signal.Output voltage after sensor output charge signal Q is converted
For U0Between relationship be：
Wherein：A is operational amplifier open-loop gain, and the order of magnitude is：103~104
Q pressure sensor KISTLER6125C output charge amounts
C61Feedback capacity
Capacitance C61The quality of performance directly decides whether charge amplifier is stablized, so C61There should be high-leakage electricity
The high performance such as resistance, good adsorption effect, high stability, selects polystyrene capacitance as feedback capacity, capacitance 1000pF.
In order to protect amplifier LF356N, in input terminal series resistance R61
U10B、R63With R64Voltage amplification module, voltage output are：
According to actual needs, gain is adjusted by adjusting RP8.Zero-bit output is adjusted by adjusting potentiometer RP9.
PRESSURE signals from cylinder pressure sensor export U1 after the signal processing of charge amplifier circuitOUTLetter
Number, however, the signal is reversed negative voltage signal, to convert it to positive axis section using operational amplifier OP07 compositions
Subtraction.In the subtraction circuit that operational amplifier OP07 is formed：Feedback resistance slide rheostat RP1 is adjusted to and resistance R50 mono-
It causes, it is -1 times to make its amplification factor.Adjusting slide rheostat RP4 makes its output voltage be 5V.Pressure signal passes through operation amplifier
The subtraction circuit that device OP07 is formed converts the signal into 0~5V voltage signals Psin。
Due to the voltage signal P generated by signal processing circuitsinThere are certain noises, in order to ensure to acquire letter
Number reliability, authenticity, needed before the signal input processor by signal isolation, isolation pick-up conversion module is
IPO EM-10-P-3.3, while pressure signal is transformed into the 0~3.3V voltage signals for meeting processor level needs by this.Every
A selecting switch S0 is connected from pick-up conversion module output end.The input of the output end connection ARM controller of the selection switch S0
Output port：PB0, PB1 select different branch by switch shifting difference.
Embodiment 2
Crank angle sensor uses model KISTLER2613B crank angle sensor.Sensor is mounted on diesel engine
Free end measures rotating speed and is not less than 15000rpm, measures drift error and is not more than 0.05 °C of A.
Shown in attached drawing 5-6.Crank angle sensor signal processing circuit includes cdm signal finishing circuit, triggering letter
Number TRG finishing circuits.
Cdm signal derived from KISTLER2613B crank angle sensor CAM pins is as crankshaft of diesel engine rotation angle
The signal of record, for confirming the angle turned over selected by crankshaft of diesel engine, the abscissa for determining indicator card.It is existing due to acquiring
Field interference is larger, carries out shaping to cdm signal using voltage comparator, it is standard block signal to make output.Signal is using light
Electric coupler 6N137 carries out signal isolation, prevents from damaging processor ARM, while converting a signal into 3.3V level, energy
Enough it is directly inputted to the ports I/O of processing ARM.PB15 is the ports I/O of ARM.
TRIG signals derived from KISTLER2613B crank angle sensor CAMM pins stop as trigger signal for upper
The determination of point.Since collection site interference is larger, shaping is carried out to TRIG signals using voltage comparator, it is standard side to make output
Wave signal.Signal carries out signal isolation using photoelectrical coupler P521, prevents from damaging processor ARM, while will letter
Number 3.3V level is converted to, the ports I/O of processing ARM can be directly inputted to.The circuit output signal is：By what is arranged
Regular pulse signal represents 0 number of degrees of crank angle, is determined for top dead centre.
Embodiment 3
Shown in attached drawing 7.Independent keyboard is used for information input.Diesel Engine Parameters in test can be carried out defeated
Enter, different types of test result can be selected with handover measurement interface, is such as shownCurve still shows P-V curves etc.
Deng.PB10, PB11, PB12, PB13, PB14 are the ports I/O of ARM.
It show ARM minimum systems and port connection relationship, 4.3 inch TFT liquid crystal displays interface electricity referring to attached drawing 8-9
Road, port pinout are directly attached with the ports I/O of ARM.The parameter of ARM processing can be directly displayed on the display screen
It is referred to for tester.
It is that file management controls chip interface circuit to show CH376S referring to attached drawing 10, and CH376S is file management control
Chip, for the file in microcontroller/DSP/MCU/MPU system read-writes USB flash disk or SD card.Upper figure is file management control chip
CH376 interface circuits are directly linked with the ports I/O of ARM.Measured data can be stored to movable storage device
In, it is preserved, is handled.
The power filter electricity used in system 3.3V regulator circuits schematic diagram and its system is shown referring to attached drawing 11-12
Road.Wherein regulator circuit uses integrated chip LT1117；Electric source filter circuit, wherein E1, E2, E3, E4, E8, E9, E10, E11
The two capacitances are the influences in order to reduce positive-negative power to amplifier, reduce the low-and high-frequency interference for introducing amplifier.
Embodiment 4
Control system operation principle based on the portable ship electronic indicators of ARM is as follows：
Sensor synchronous acquisition pressure output is PRESSURE charge signal Q, corner signal CMD, trigger signal
TRG.1. charge signal is converted by charge amplifier, voltage signal is converted thereof into, 2. passing through level shifting circuit will
Its voltage range is transferred to 0~5V, and 3. converting voltages into 0~3.3V voltages using voltage isolation finishing circuit, (ARM can connect
By voltage range)；Corner signal CMD passes through flip-flop circuit, carries out shaping to signal, and remove interference signal；Triggering
Signal TRG passes through trigger circuit, carries out shaping to signal, and remove interference signal；ARM is same by the signal of the ports pair I/O three
When read；ARM system keyboard inputs Diesel Engine Parameters：Cylinder bore, crankshaft-link rod ratio, compression ratio, piston stroke etc.；On
Stop, in diesel engine, position when piston is lifted off crankshaft center maximum distance is known as top dead centre, determines the main mesh of top dead centre
Be to determine measurement initial time；Compression collimation method is also motoring breakdown, exactly measures pressure when diesel engine is misfired and shows work(
Figure, is not considering pumping loss and heat exchange ideally, and cylinder pressure is symmetrical with top dead centre distribution, and pressure is most
High point, that is, position when volume of cylinder minimum, as top dead center position, therefore we can do one along towing astern indicator card
A little lines for being parallel to atmospheric pressure, the midpoint for connecting these lines is assured that the top dead center position of towing astern indicator card, true
Combustion process in, it is contemplated that air loss and heat transfer losses, top dead center position do not show work(with towing astern ideally
Figure top dead center position is consistent, always in advance in towing astern indicator card top dead center position certain angle, we usually by this angle
Heat Loss Angle is done, different Heat Loss Angles are different from rotating speed because of structural parameters for different diesel engines, therefore we can
To determine towing astern indicator card top dead center position according to compression collimation method first, heating power damage of the diesel engine under the operating mode is then subtracted
Lose diesel engine top dead centre position when angle is true burning；The pressure data singular point of measurement is handled；To the pressure of measurement
Force curve carries out smooth treatment.
Many details are elaborated in the above description in order to fully understand the utility model.But above description
Only it is the preferred embodiment of the utility model, the utility model can be much to come different from other manner described here
Implement, therefore the utility model is not limited by specific implementation disclosed above.Any those skilled in the art exist simultaneously
It does not depart under technical solutions of the utility model ambit, it is all new to this practicality using the methods and technical content of the disclosure above
Type technical solution makes many possible changes and modifications, or is revised as the equivalent embodiment of equivalent variations.It is every without departing from this
The content of utility model technical solution any is simply repaiied according to the technical essence of the utility model is made to the above embodiment
Change, equivalent variations and modification, in the range of still falling within technical solutions of the utility model protection.
Claims (7)
1. based on the control system of the portable ship electronic indicators of ARM, including cylinder pressure sensor, crank angle sensor, ARM
Controller, industrial personal computer, display screen, keyboard, file management controller；It is characterized in that：The cylinder pressure sensor, crank angle sensing
Device is electrically connected by signal processing circuit with ARM controller；The keyboard instructs to ARM controller for inputting and controls ARM
The parameter signal of device processing processed shows that another way uploads industrial personal computer by serial communication modular by display screen all the way；The ARM
Controller is also connect with printer；The file management controller is connected with ARM controls, is used for reading and writing of files.
2. the control system according to claim 1 based on the portable ship electronic indicators of ARM, it is characterized in that：It is described
It is charge signal that cylinder pressure sensor, which uses model KISTLER6125C pressure sensors, input signal PRESSURE,；It is described
Charge signal is converted to voltage letter after charge amplifying circuit, signaling conversion circuit, signal conditioning circuit, by charge signal
Number；The voltage signal, by selecting switch, the pressure signal of cylinder pressure sensor acquisition is passed after pick-up conversion module is isolated
Transport to ARM input/output end ports.
3. the control system according to claim 2 based on the portable ship electronic indicators of ARM, it is characterized in that：It is described
Pick-up conversion module output end is isolated and connects a selecting switch S0, the output end of the selection switch S0 connects the defeated of ARM controller
Enter/output port：PB0, PB1, ARM controller select different input branches by the dial position difference of selecting switch S0.
4. the control system according to claim 1 based on the portable ship electronic indicators of ARM, it is characterized in that：It is described
Crank angle sensor uses model KISTLER2613B crank angle sensor, and it is free which is mounted on diesel engine
End measures rotating speed and is not less than 15000rpm, measures drift error and is not more than 0.05 DEG C of A；The output of the crank angle sensor
The angular signal of acquisition is changed into pulse signal by signal after signal processing circuit.
5. the control system according to claim 1 based on the portable ship electronic indicators of ARM, it is characterized in that：It is described
ARM controller is with model STM32F103 chips core in order to control.
6. the control system according to claim 1 based on the portable ship electronic indicators of ARM, it is characterized in that：Also wrap
USB interface is included, the USB interface is connect with ARM controller.
7. the control system according to claim 1 based on the portable ship electronic indicators of ARM, it is characterized in that：It is described
File management controller uses CH376S document control chips；The serial communication modular uses MAX232 chips.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721434197.5U CN207946182U (en) | 2017-10-31 | 2017-10-31 | Control system based on the portable ship electronic indicators of ARM |
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| CN201721434197.5U CN207946182U (en) | 2017-10-31 | 2017-10-31 | Control system based on the portable ship electronic indicators of ARM |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107631825A (en) * | 2017-10-31 | 2018-01-26 | 集美大学 | Control system and its control method based on the portable ship electronic indicators of ARM |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107631825A (en) * | 2017-10-31 | 2018-01-26 | 集美大学 | Control system and its control method based on the portable ship electronic indicators of ARM |
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