CN202110400U - Portable test controller for indicator diagram of marine diesel - Google Patents
Portable test controller for indicator diagram of marine diesel Download PDFInfo
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- CN202110400U CN202110400U CN2011201544739U CN201120154473U CN202110400U CN 202110400 U CN202110400 U CN 202110400U CN 2011201544739 U CN2011201544739 U CN 2011201544739U CN 201120154473 U CN201120154473 U CN 201120154473U CN 202110400 U CN202110400 U CN 202110400U
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Abstract
The utility model provides a portable test controller for an indicator diagram of a marine diesel, consisting of a power supply unit and a hardware unit, wherein the power supply unit consists of a plurality of power source chips and a plurality of power sources; the hardware unit mainly consists of a charge amplifier, a precision voltage division circuit, a voltage follower, a relay and a singlechip; an input end of the charge amplifier is directly connected with an output end of a charge type cylinder pressure sensor, and an output end of the charge amplifier is connected with an input end of the precision voltage division circuit; an input end of the voltage follower is connected with an output end of the precision voltage division circuit, and an output end of the voltage follower is connected with an analog input end of a 12-bit high-speed AD in the singlechip; the input of the relay controls a pin to be connected with the singlechip, and the output of the relay is connected with a control end of the charge amplifier; and two interrupt pins of the singlechip are directly connected with an output end of a signal conditioning module. The portable test controller has the advantages of being simple in structure, high in integration level, convenient to memorize test data, applied to remote transmission and the like.
Description
Technical field
The utility model relates to controller, the portable test controller of particularly a kind of marine vehicle diesel indicating diagram.
Background technology
Diesel indicating diagram is containing the abundant information relevant with diesel engine performance; Be that the Marine Engine Engineering technician carries out one of most important means of diesel engine performance monitoring and diagnosis, boat diesel engine is provided with the cylinder pressure measurement passage and is used to measure duty in the load-position diagram monitoring cylinder.Boat diesel engine is mainly measured maximum outbreak pressure at present, but this can not reflect the course of work in the cylinder fully, is difficult to analyze the cylinder internal state.
The portable test controller of existing marine vehicle diesel indicating diagram is accomplished jointly or is accomplished by 8 bit single-chip systems by Programmable Logic Controller (PLC) and HSDA equipment.PLC makes that portable test controller equipment is various, reliability decrease, and cost is high; The internal resource of 8 single-chip microcomputers is few, and outside expansion is many, and level of integrated system is low, and data transmission distance is short, and data storage method is dumb.So existing portable test controller system complex can only be carried out acquisition controlling to conditioned cylinder pressure signal, need join data storage inconvenience during test with computing machine.
Therefore, be necessary to develop the novel portable test controller that a kind of integrated level is higher, use is more portable, data storage is more convenient, transmission range is farther.
Summary of the invention
The utility model technical matters to be solved is: provide a kind of marine vehicle diesel indicating diagram portable test controller, to overcome the problem that prior art exists.
The technical scheme that its technical matters that solves the utility model adopts is: be made up of power supply unit and hardware cell.Power supply unit is made up of power supply chip and a plurality of power supply.Hardware cell mainly is made up of charge amplifier, accurate bleeder circuit, voltage follower, relay and single-chip microcomputer; Wherein: said charge amplifier; Its input end directly links to each other with the output terminal of charge type cylinder pressure sensors, and its output terminal links to each other with the input end of accurate bleeder circuit; Said voltage follower, its input end links to each other with the output terminal of accurate bleeder circuit, and its output terminal links to each other with the analog input end of inner 12 high-speed AD of single-chip microcomputer; Said relay, its input control pin links to each other with single-chip microcomputer, and its output links to each other with the control end of charge amplifier; Said single-chip microcomputer, its two interrupt pin directly link to each other with the output terminal of signal condition module.
It is the charge amplifier of Kistler 5040A24 that said charge amplifier can adopt model.
It is the single-chip microcomputer of STM32F103VCT6 that said single-chip microcomputer can adopt model; The 2.5V superhigh precision external voltage reference chip that the inner AD of this single-chip microcomputer uses, its model is MAX6033AAUT.
Said single-chip microcomputer links to each other with the peripheral expansion parts through its IO pin, and these peripheral expansion parts comprise 1602 industrial character mode lcds, matrix keyboard, SD card, RS485 communication module and LED light, and wherein the model of RS485 communication chip is SP3485.
It is the high precision operating amplifier of OP27GS that said voltage follower can adopt model.
It is the relay of G6S-2-Y that said relay can adopt model.
Said signal condition module can be made up of amplitude limiter circuit, voltage comparator and magnetic coupling digital isolator, wherein: said amplitude limiter circuit, its input end links to each other with photoelectric encoder or magnetoelectric tachometric transducer output terminal; Said voltage comparator, its input end links to each other with limit circuit output end; Said magnetic coupling digital isolator, its input end links to each other with the output terminal of voltage comparator, and its output terminal directly links to each other with the interrupt pin of single-chip microcomputer.
It is the voltage comparator of LM393 that said voltage comparator can adopt model.
It is the magnetic coupling digital isolator of ADuM5400 that said magnetic coupling digital isolator can adopt model.
The utility model compared with prior art mainly contains following advantage:
1. the signal condition module uses magnetic coupling numeral to isolate, and can effectively suppress to disturb and protect the portable test controller safety with its interface.
2. primary processor adopts 32 high-performance single-chip microcomputers, and its inside carries 12 high-speed AD, and anti-interference is good; Control through the rising edge down trigger of top dead centre signal and corner signal after the conditioning cylinder pressure signal is waited the crank angle collection, little and processing speed of image data amount and real-time are good.
3. portable test controller integrated level is high, and number of peripheral devices is few, the charge amplifier of inner integrated charge type cylinder pressure sensors with make charge amplifier output signal better and the late-class circuit voltage follower that carries out impedance matching.
4. for avoiding the drift of charge amplifier because of working long hours and producing; Inside is provided with relay; Control the duty of charge amplifier through the break-make of Single-chip Controlling relay, open charge amplifier before realizing gathering, gather and finish the back charge amplifier and reset.
5. the cylinder pressure data storage of gathering is flexible, both can send to host computer through RS485 serial communication data line, can textual form be saved in the built-in SD card of portable test controller again.
6. average in the quasi-periodicity of the enterprising promoting the circulation of qi cylinder of portable test controller pressure signal, reduced data volume.
In a word, the portable test controller of the marine vehicle diesel indicating diagram that the utility model provides have simple in structure, integrated level is high, the test data convenient storage, can be applicable to advantages such as long-distance transmissions.
Description of drawings
Fig. 1 is the structural drawing of the portable test controller of marine vehicle diesel indicating diagram.
Fig. 2 is the signal condition modular structure figure among Fig. 1.
Fig. 3 is the process chart of the portable test controller of marine vehicle diesel indicating diagram.
Fig. 4 is the load-position diagram that the portable test controller of marine vehicle diesel indicating diagram is gathered.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described further.
The portable test controller of the marine vehicle diesel indicating diagram that the utility model provides, its structure is as shown in Figure 1: be made up of portable test controller power supply unit and portable test controller hardware cell.The portable test controller of this marine vehicle diesel indicating diagram have 1 tunnel simulating signal input, the input of 2 way word signals, 1 road RS485 COM1 and ± input of 12VDC power supply.Wherein 1 tunnel analog input directly links to each other with the output of charge type cylinder pressure sensors; 2 way word signals inputs with nurse one's health into standard TTL signal and the top dead centre after magnetic coupling numeral is isolated links to each other with corner signal.Inner 32 single-chip microcomputers of portable test controller wait the crank angle collection according to top dead centre signal after nursing one's health and the control of corner signal down trigger to cylinder pressure signal; And it is average to carry out quasi-periodicity automatically, and the collection point is several to be confirmed according to the numbers of setting quasi-periodicity automatically.If select RS485 serial communication mode, the cylinder pressure data of collection send in the computing machine through RS485 serial communication data line; If select SD card mode, data are stored in the built-in SD card of portable test controller with textual form.
Said portable test controller power supply unit, its structure is as shown in Figure 1, is made up of power supply chip and a plurality of power supply.Wherein outside input+12V directly links to each other with the input end of power supply 1, outside import-12V directly links to each other with the input end of power supply 2.Said power supply 1, an one of which output terminal links to each other with insulating power supply module WRA1212ZP-3w, obtains power supply 6; Another output terminal links to each other with power supply chip LM2575S-5, obtains power supply 3.Said power supply 3, an one of which output terminal links to each other with power supply chip ASM1117, obtains power supply 4; Its another output terminal links to each other with power supply chip MAX6033AAUT, obtains power supply 5.
Above-mentioned six power supplys, power supply 1 are+12V that power supply 2 is-12V that power supply 3 is+5V that power supply 4 is+3.3V that power supply 5 is+2.5V that power supply 6 is+24V; Being respectively applied for to each chip in the hardware cell of the portable test controller of marine vehicle diesel indicating diagram provides its operate as normal required voltage.
Said portable test controller internal hardware unit; Its structure is as shown in Figure 1, is made up of charge amplifier, accurate bleeder circuit, voltage follower, relay, single-chip microcomputer, 1602 liquid crystal, matrix keyboard, SD card, RS485 communication module and LED light.Said charge amplifier, its input directly links to each other with the output of charge type cylinder pressure sensors, and cylinder pressure signal is nursed one's health; Said accurate bleeder circuit, its input links to each other with the output of charge amplifier; Said voltage follower, its input links to each other with the output of accurate bleeder circuit, and its output links to each other with the analog input end of inner 12 high-speed AD of single-chip microcomputer.Said relay, its input control pin links to each other with single-chip microcomputer, and output links to each other with the control end of charge amplifier; Said single-chip microcomputer, its two interrupt pin directly links to each other with the output terminal of signal condition module, and the peripheral expansion parts have devices such as liquid crystal, matrix keyboard, SD card, RS485 communication module and LED light.
Above-mentioned charge amplifier can use the charge amplifier of model as Kistler 5040A24, and its effect is the voltage signal that the charge signal of charge type cylinder pressure sensors output is converted to 0-10V.Through with insulating power supply module WRA1212ZP-3W-the 12V output head grounding, then+12V output terminal obtain its work required+24V voltage.
Above-mentioned accurate bleeder circuit, its effect are that the cylinder pressure signal branch with 0-10V is depressed into 0-2.5V, to guarantee the acquisition range of cylinder pressure signal amplitude at the inner AD of single-chip microcomputer.
Above-mentioned voltage follower, can adopt model is the high precision operating amplifier of OP27GS, its effect be make charge amplifier better and late-class circuit carry out impedance matching.
It is the relay of G6S-2-Y that above-mentioned relay can adopt model, and its effect is to realize the control of low-voltage Single-chip Controlling pin to higher-voltage charge amplifier control pin.
It is 1602 industrial character mode lcds that above-mentioned liquid crystal can adopt model.
It is the chip of SP3485 that above-mentioned RS485 communication chip can adopt model.
Above-mentioned single-chip microcomputer can adopt 32 high-performance single-chip microcomputers of STM32F103 series, and concrete model is STM32F103VCT6, is the core processor of portable test controller.The current test mode of Single-chip Controlling liquid crystal display is also indicated with LED light; If data acquisition begins then Single-chip Controlling relay unlatching charge amplifier; Cylinder pressure signal is connected to the analog input end of inner 12 high-speed AD of single-chip microcomputer behind charge amplifier conditioning, accurate dividing potential drop and voltage follower; This AD uses outside superhigh precision voltage reference chip, and its model is MAX6033AAUT.The rising edge down trigger control of single-chip microcomputer through conditioning back top dead centre and corner signal simultaneously to cylinder pressure signal etc. the crank angle data acquisition, and it is average to carry out quasi-periodicity automatically, the collection point is several definite automatically according to built-in number quasi-periodicity of single-chip microcomputer.The cylinder pressure data of gathering can send to computing machine through RS485 serial communication data line, perhaps are saved in the built-in SD card of portable test controller with textual form.
The structure of said portable test controller signal condition module is as shown in Figure 2: be made up of amplitude limiter circuit, LM393 voltage comparator and magnetic coupling digital isolator ADuM5400.Said amplitude limiter circuit, its input links to each other with photoelectric encoder or magnetoelectric tachometric transducer output terminal; Said LM393 voltage comparator, its input links to each other with the output of amplitude limiter circuit; Said magnetic coupling digital isolator can adopt ADuM5400, and its input links to each other with the output of LM393 voltage comparator, and its output directly links to each other with the interrupt pin of the inner single-chip microcomputer of portable test controller.
Above-mentioned amplitude limiter circuit adopts 2 4.7V voltage stabilizing diode butt joints to form, and can adopt model is IN4732, and its effect is when the sensor signal amplitude surpasses 4.7V, it to be clamped near the 4.7V, damages voltage comparator to avoid too high voltages.
Above-mentioned LM393 voltage comparator, its effect are the TTL signals that the signal condition of photoelectric encoder or magnetoelectric tachometric transducer output is become standard, and isolate through magnetic coupling digital isolator ADuM5400.
Above-mentioned magnetic coupling digital isolator ADuM5400, its effect is the safety that effectively suppresses the inner single-chip microcomputer of portable test controller of interference and protection and its interface.
The portable test controller of the marine vehicle diesel indicating diagram that the utility model provides; The course of work of its inner single-chip microcomputer is as shown in Figure 3: if select RS485 serial communication mode; Portable test controller need link to each other with computing machine through RS485 serial communication data line; Carry out the handshake communication test with host computer after portable test controller powers on, the success of shaking hands then gets into gatherer process.During collection, input earlier needs the cylinder cylinder number of collection, press acknowledgement key after; Open charge amplifier, the charge amplifier pilot lamp is bright, the sampling of crank angles such as entering; The data of gathering are sent to Computer Storage, analysis and processing through the RS485 serial port data line; The reception of wait receiving computer feedback is successfully instructed after accomplishing, and closes charge amplifier, restarts the next round collection.If select SD card mode, after portable test controller powered on, input needed the cylinder cylinder number of collection, and by waiting crank angle collection behind the acknowledgement key, the cylinder pressure data of collection are stored in the built-in SD card of portable test controller with textual form.In the gatherer process, 1602 liquid crystal show current state in real time, and indicate with pilot lamp.
Above-mentioned SD card mode, the FAT32 file system is adopted in the textual form storage.During file system work, single-chip microcomputer carries out initialization to SD earlier, and the DBR data of successful post analysis SD Cavan part system are obtained fileinfo.If " CYLDATA.txt " file by name exists, lock file then writes the cylinder pressure data that collect at the end of this document; If this document do not exist, new files " CYLDATA.txt " and write the cylinder pressure data then.Fig. 4 is for the portable test controller collection of marine vehicle diesel indicating diagram and be kept at the load-position diagram data waveform figure in the SD Cavan part " CYLDATA.txt "; Tested object is No. 3 wheels of sea, Guangdong iron 2 main frames; The main frame model is 8G32, and the main frame operating mode is the load of 25% under the rated speed 600r/min.
The portable test controller of the marine vehicle diesel indicating diagram that the utility model provides, it is used for the boat diesel engine performance test, adopts the method that may further comprise the steps during test:
(1) sensor installation, stube cable, the energising back is if select RS485 serial communication mode, and portable test controller and computing machine carry out the handshake communication test, and the success back gets into waits for acquisition state; If select SD card mode, then directly get into and wait for acquisition state;
(2) open cylinder indicator valve passage, input cylinder number, and press acknowledgement key, portable test controller according to top dead centre and crank-angle pulse rising edge down trigger to cylinder pressure signal etc. the crank angle collection;
(3) in data acquisition, show on the portable test controller liquid crystal that maximal value that current state shows current cylinder pressure simultaneously judges the validity of test data to help the user, omnidistancely indicate with pilot lamp;
(4) if select RS485 serial communication mode, data send in the computing machine through RS485 serial communication data line; If select SD card mode, data are stored in the built-in SD card of portable test controller with textual form;
(5) after transmission or storage finished, the test of next cylinder was carried out in (2) set by step, until the test of accomplishing all cylinders.
Claims (9)
1. the portable test controller of marine vehicle diesel indicating diagram is characterized in that being made up of power supply unit and hardware cell, and wherein: power supply unit is made up of power supply chip and a plurality of power supply; Hardware cell mainly is made up of charge amplifier, accurate bleeder circuit, voltage follower, relay and single-chip microcomputer; Said charge amplifier, its input end directly links to each other with the output terminal of charge type cylinder pressure sensors, and its output terminal links to each other with the input end of accurate bleeder circuit; Said voltage follower, its input end links to each other with the output terminal of accurate bleeder circuit, and its output terminal links to each other with the analog input end of inner 12 high-speed AD of single-chip microcomputer; Said relay, its input control pin links to each other with single-chip microcomputer, and its output links to each other with the control end of charge amplifier; Said single-chip microcomputer, its two interrupt pin directly link to each other with the output terminal of signal condition module.
2. the portable test controller of marine vehicle diesel indicating diagram according to claim 1 is characterized in that it is the charge amplifier of Kistler 5040A24 that said charge amplifier adopts model.
3. the portable test controller of marine vehicle diesel indicating diagram according to claim 1 is characterized in that it is the single-chip microcomputer of STM32F103VCT6 that said single-chip microcomputer adopts model; The 2.5V superhigh precision external voltage reference chip that the inner AD of this single-chip microcomputer uses, its model is MAX6033AAUT.
4. the portable test controller of marine vehicle diesel indicating diagram according to claim 3; It is characterized in that said single-chip microcomputer links to each other with the peripheral expansion parts through its IO pin; The peripheral expansion parts comprise 1602 industrial character mode lcds, matrix keyboard, SD card, RS485 communication module and LED light, and wherein the model of RS485 communication chip is SP3485.
5. the portable test controller of marine vehicle diesel indicating diagram according to claim 1 is characterized in that it is the high precision operating amplifier of OP27GS that said voltage follower adopts model.
6. the portable test controller of marine vehicle diesel indicating diagram according to claim 1 is characterized in that it is the relay of G6S-2-Y that said relay adopts model.
7. the portable test controller of marine vehicle diesel indicating diagram according to claim 1; It is characterized in that said signal condition module is made up of amplitude limiter circuit, voltage comparator and magnetic coupling digital isolator; Wherein: said amplitude limiter circuit, its input end links to each other with photoelectric encoder or magnetoelectric tachometric transducer output terminal; Said voltage comparator, its input end links to each other with limit circuit output end; Said magnetic coupling digital isolator, its input end links to each other with the output terminal of voltage comparator, and its output terminal directly links to each other with the interrupt pin of single-chip microcomputer.
8. the portable test controller of marine vehicle diesel indicating diagram according to claim 7, it is characterized in that adopting model is the voltage comparator of LM393.
9. the portable test controller of marine vehicle diesel indicating diagram according to claim 7, it is characterized in that adopting model is the magnetic coupling digital isolator of ADuM5400.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201544739U CN202110400U (en) | 2011-05-16 | 2011-05-16 | Portable test controller for indicator diagram of marine diesel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201544739U CN202110400U (en) | 2011-05-16 | 2011-05-16 | Portable test controller for indicator diagram of marine diesel |
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| CN202110400U true CN202110400U (en) | 2012-01-11 |
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| CN2011201544739U Expired - Fee Related CN202110400U (en) | 2011-05-16 | 2011-05-16 | Portable test controller for indicator diagram of marine diesel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181341A (en) * | 2015-06-29 | 2015-12-23 | 山东大学 | Internal combustion engine combustion process characterization parameter test method and device |
| CN113777990A (en) * | 2021-09-15 | 2021-12-10 | 广州安广电子科技股份有限公司 | Single-line debugging graphic terminal of single-chip microcomputer |
| CN114459766A (en) * | 2022-01-13 | 2022-05-10 | 武汉理工大学 | Method for monitoring working state of oil head of crude oil generator set of ocean platform |
-
2011
- 2011-05-16 CN CN2011201544739U patent/CN202110400U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181341A (en) * | 2015-06-29 | 2015-12-23 | 山东大学 | Internal combustion engine combustion process characterization parameter test method and device |
| CN105181341B (en) * | 2015-06-29 | 2017-08-11 | 山东大学 | A kind of combustion process of the internal-combustion engine characterization parameter method of testing and device |
| CN113777990A (en) * | 2021-09-15 | 2021-12-10 | 广州安广电子科技股份有限公司 | Single-line debugging graphic terminal of single-chip microcomputer |
| CN114459766A (en) * | 2022-01-13 | 2022-05-10 | 武汉理工大学 | Method for monitoring working state of oil head of crude oil generator set of ocean platform |
| CN114459766B (en) * | 2022-01-13 | 2024-06-11 | 武汉理工大学 | Method for monitoring working state of oil head of crude oil generator set on ocean platform |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20160516 |
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| CF01 | Termination of patent right due to non-payment of annual fee |