CN202883137U - Master control modular circuit of diesel engine safety protection controller - Google Patents
Master control modular circuit of diesel engine safety protection controller Download PDFInfo
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- CN202883137U CN202883137U CN 201220570526 CN201220570526U CN202883137U CN 202883137 U CN202883137 U CN 202883137U CN 201220570526 CN201220570526 CN 201220570526 CN 201220570526 U CN201220570526 U CN 201220570526U CN 202883137 U CN202883137 U CN 202883137U
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- diesel engine
- chip microcomputer
- w78e52d
- safety protection
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Abstract
The utility model relates to the technical field of diesel engine safety protection, and discloses a master control modular circuit of a diesel engine safety protection controller. The master control modular circuit of the diesel engine safety protection controller comprises a central processing unit circuit, a communication circuit MAX485, a watchdog circuit MAX813L, a sensor measuring circuit, a line fault detection circuit, an operational order detection circuit and a parameter configuration circuit. An input end of the central processing unit circuit is connected with the sensor measuring circuit through a switching value signal acquisition circuit and is connected with the line fault detection circuit, the operational order detection circuit and the parameter configuration circuit. An output end of the central processing unit circuit is connected with a display module circuit. The master control modular circuit of the diesel engine safety protection controller can monitor some faults and give an alarm intelligently, achieve automatic emergency cut-off protection under the abnormal conditions such as overspeed of a diesel engine, improve operation safety and reliability of a diesel engine system, and improve control accuracy.
Description
[technical field]
The utility model relates to diesel engine safety resist technology field, especially relates to a kind of main control module circuit of diesel engine safety protection controller.
[background technique]
The various functions of diesel engines at present safety protection adopt discrete device or versatility PLC to realize mostly; although solved to a certain extent the diesel engine safety operation problem; but owing to do not possess the function such as signal line detecting fault, so combined reliability still needs further to promote.The develop rapidly of domestic economy is widened rapidly the application of the high-end equipments such as large-scale ocean going vessel and heavy engineering machinery; power system is also more and more higher as its technical need of core of equipment; domestic with international related specifications requires also more and more stricter, provides more efficient, safer power system safety protection to become requisite constituent element.
[summary of the invention]
For solving because the control surface of safety protection control system in the Diesel Engine Control case is single, cause the low problem of safety protection coefficient.The utility model provides a kind of main control module circuit of diesel engine safety protection controller; Independent safety protection controller can be increased on the basis of conventional diesel engine monitoring system and redundancy protecting control under the abnormal conditions can be effectively realized; compare the integration capabilities such as (switching value) line fault detecting that possessed sensor, the detecting of emergency shutdown operational order line fault, field bus communication, system failure warning with similar conventional apparatus, significantly improved diesel engine system Operation safety, reliability.The utlity model has simple in structure, more cheap, the comprehensive applicability of cost is stronger, can satisfy the application of High speed and heavy duty diesel engine in marine system, improves Security, the reliability of diesel engine operation and safety protection device work.
For achieving the above object, the utility model adopts following technological scheme:
A kind of main control module circuit of diesel engine safety protection controller includes central processing unit (CPU) circuit, communicating circuit MAX485, watchdog circuit MAX813L, sensor measuring circuit, line fault testing circuit, operational order testing circuit and parameter configuration circuit; The central processing unit (CPU) circuit is single-chip microcomputer W78E52D, single-chip microcomputer W78E52D first input end links to each other with sensor measuring circuit by the switching value signal acquisition circuit, single-chip microcomputer W78E52D the second input end links to each other with the line fault testing circuit, single-chip microcomputer W78E52D the 3rd input end and operational order detect, the configuration parameter circuit links to each other, single-chip microcomputer W78E52D is connected with watchdog circuit MAX813L, single-chip microcomputer W78E52D the first output terminal links to each other with the display modular circuit by communication MAX485 circuit, and single-chip microcomputer W78E52D the second output terminal is by displacement CD4099, driving the UL2803 circuit links to each other with control relay circuit.
Owing to adopt aforesaid technological scheme, the utlity model has following good effect:
A kind of diesel engine safety protection controller main control module circuit; be the safety protector of diesel engine of a kind of RS485 of having field bus communication, single-chip microcomputer Digital Control characteristics, be used for the diesel engine hypervelocity, lubricating oil pressure is excessively low, cooling water temperature is too high, the automatic protection control under the high abnormal conditions of crankcase pressure.It is control core that this type controller adopts enhancement mode 51 series monolithics; configuration tach signal shaping circuit, Boolean value output sensor state-detection and measurement circuitry fault monitoring circuit, fingertip control command detection and line fault circuit for detecting, protection control drive circuit, RS485 communicating circuit, classification state display driver circuit etc.; automatic emergency stop-working protection by under the abnormal conditions such as realization diesel engine hypervelocity after the integrated logic processing improves diesel engine system safety in operation, reliability.
[description of drawings]
Fig. 1 diesel engine control system structural drawing;
Among the figure: 1, basic supervisory system, 2, sensor, 3, diesel engine, 4, the safety protection executive component, 5, the safety protection control system, 6, substantially monitor executive component.
Fig. 2 is main control module circuit structure skeleton diagram;
[embodiment]
Can explain in more detail the utility model by following embodiment;
The utility model is to do independent safety protection to use in the other control system of marine diesel oil Generator.During the diesel engine operation; by monitoring constantly pressure, the temperature of fuel oil/lubricating oil/seawater/fresh water, the running speed of fuel oil/lubricating oil/seawater/fresh water are isoparametric; health status in the time of can making the staff effectively identify the diesel engine operation; by independently safety system is set, further improve diesel engine Operation safety, reliability in the ocean going vessel.
Such as accompanying drawing 1 brief overview the framework of whole system; 1～n various kinds of sensors 2 is installed on the diesel engine 3 to be gathered and is transmitted to guarantee all kinds of monitor datas; the data that sensor 2 gathers comprise that analogue signal (0-5V or 4-20mA)/switching value signal (logic state 0 and 1) enters respectively basic supervisory system 1 and safety protection control system 5 carries out calculation process, require processing result is sent to safety protection executive component 4, substantially monitors executive component 6 completion system closed loop controls according to applied logic.
Described main control module circuit includes central processing unit (CPU) circuit, communicating circuit MAX485, watchdog circuit MAX813L, sensor measuring circuit, line fault testing circuit, operational order testing circuit and parameter configuration circuit; The central processing unit (CPU) circuit is single-chip microcomputer W78E52D, single-chip microcomputer W78E52D first input end links to each other with sensor measuring circuit by the switching value signal acquisition circuit, single-chip microcomputer W78E52D the second input end links to each other with the line fault testing circuit, single-chip microcomputer W78E52D the 3rd input end and operational order detect, the configuration parameter circuit links to each other, single-chip microcomputer W78E52D is connected with watchdog circuit MAX813L, single-chip microcomputer W78E52D the first output terminal links to each other with the display modular circuit by communication MAX485 circuit, and single-chip microcomputer W78E52D the second output terminal is by displacement CD4099, driving the UL2803 circuit links to each other with control relay circuit.
1), the main control module structure, adopt the aluminum alloy casing encapsulation, configuration input, output pin terminal, parameter configuration toggle switch, test button.
Main control module interface configuration table
| Sequence number | Title | Classification | Functional description | Remarks | ||
| 1 | + | Input | Positive | Lead terminal | ||
| 2 | + | Input | Positive source | Lead terminal | ||
| 3 | - | Input | Power cathode | Lead terminal | ||
| 4 | - | Input | Power | Lead terminal | ||
| 5 | 0 | Input | Speed probe | Lead terminal, magnetoelectric | ||
| 6 | 1 | Input | The instruction of remote control emergency shutdown | Lead terminal | ||
| 7 | 2 | Input | The other emergency shutdown instruction of machine | Lead terminal | ||
| 8 | 3 | Input | Reset instruction | Lead terminal | ||
| 9 | 4 | Input | Basic supervisory system fault | Lead terminal | ||
| 10 | 5 | Input | The diesel engine running state | Lead terminal | ||
| 11 | 6 | Input | More control instruction | Lead terminal | ||
| 12 | 7 | Input | The instruction of examination lamp | Lead terminal | ||
| 13 | 8 | Input | The noise reduction instruction | Lead terminal | ||
| 14 | 9 | Input | The detecting of anxious power |
Lead terminal | ||
| 15 | 10 | Input | The detecting of anxious power failure magnet valve 1 line fault | Lead terminal | ||
| 16 | 11 | Input | The too high sensor of cooling water temperature | Lead terminal, switching value form | ||
| 17 | 12 | Input | The high sensor of crankcase pressure | Lead terminal, switching value form | ||
| 18 | 13 | Input | Lubricating oil pressure is crossed low sensor | Lead terminal, switching value form | ||
| 19 | - | Communication | Power cathode | Lead terminal | ||
| 20 | B | Communication | The RS485 bus B | Lead terminal | ||
| 21 | A | Communication | RS485 bus A | Lead terminal | ||
| 22 | 0 | | Output pin | 1,2 signal common ports | Lead terminal | |
| 23 | 1 | Output | Emergency shutdown drives signal | Lead terminal | ||
| 24 | 2 | Output | Buzzer drives signal | Lead terminal | ||
| 25 | 3 | | Output pin | 4 signal common ports | Lead terminal | |
| 26 | 4 | Output | Controller synthesis is reported to the police | Lead terminal | ||
| 27 | 5 | Output | The controller power source fault | Lead terminal | ||
| 28 | 6 | Output | Controller lost efficacy | Lead terminal | ||
| 29 | 7 | Output | Line fault detecting integrated alarm | Lead terminal | ||
| 30 | 8 | Output | The too high warning of cooling water temperature | Lead terminal | ||
| 31 | 9 | Output | Crankcase pressure is high reports to the police | Lead terminal | ||
| 32 | 10 | Output | Lubricating oil pressure is crossed low the warning | Lead terminal | ||
| 33 | 11 | Output | Overspeed alarming | Lead terminal | ||
| 34 | 12 | | Output pin | 5,6,7,8,9,10,11 signal common ports | Lead terminal | |
| 35 | Test button | Input | Simulation test hypervelocity, lubricating oil pressure are crossed low warning function | Body is installed | ||
| 36 | Toggle switch | Input | The Configuration Control Unit mode of operation | Body is installed | ||
| 37 | Power supply indicator | Output | The controller power supply indication | Body is installed | ||
| 38 | The link tutorial light | Output | The indication of RS485 communication link state | Body is installed |
Single-chip microcomputer sends data to MAX485 by serial ports, after the level signal conversion data is delivered to the RS485 bus, and the D2 tutorial light can glimmer with the variation of data in the process of transmitting; External data enters controller and carries out level translation by MAX485 and enter single-chip microcomputer by serial ports.Because the RS485 bus is the half duplex communication pattern, therefore in SCM program, carry out communication succession control, this controller carries out communication succession control according to MODBUS-RTU agreement master slave mode, and controller (main control module) is that main website, display modular (from the control module) are slave station.
This controller has adopted hardware watchdog circuit MAX813, feeding the dog period definition is 1.6S, when the single-chip microcomputer mistake or when unusually failing regularly to export feeding-dog signal according to the programming requirement (twice feed the dog interval greater than 1.6 seconds), MAX813 will export WDO signal driver optocoupler, triode, relay, produce the system failure and report to the police.
Claims (1)
1. the main control module circuit of a diesel engine safety protection controller, it is characterized in that: the main control module circuit includes central processing unit (CPU) circuit, communicating circuit MAX485, watchdog circuit MAX813L, sensor measuring circuit, line fault testing circuit, operational order testing circuit and parameter configuration circuit; The central processing unit (CPU) circuit is single-chip microcomputer W78E52D, single-chip microcomputer W78E52D first input end links to each other with sensor measuring circuit by the switching value signal acquisition circuit, single-chip microcomputer W78E52D the second input end links to each other with the line fault testing circuit, single-chip microcomputer W78E52D the 3rd input end and operational order detect, the configuration parameter circuit links to each other, single-chip microcomputer W78E52D is connected with watchdog circuit MAX813L, single-chip microcomputer W78E52D the first output terminal links to each other with the display modular circuit by communication MAX485 circuit, and single-chip microcomputer W78E52D the second output terminal is by displacement CD4099, driving the UL2803 circuit links to each other with control relay circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220570526 CN202883137U (en) | 2012-11-01 | 2012-11-01 | Master control modular circuit of diesel engine safety protection controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220570526 CN202883137U (en) | 2012-11-01 | 2012-11-01 | Master control modular circuit of diesel engine safety protection controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202883137U true CN202883137U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220570526 Expired - Fee Related CN202883137U (en) | 2012-11-01 | 2012-11-01 | Master control modular circuit of diesel engine safety protection controller |
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| Country | Link |
|---|---|
| CN (1) | CN202883137U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810300A (en) * | 2020-07-03 | 2020-10-23 | 东方电气自动控制工程有限公司 | Gas turbine protection device |
-
2012
- 2012-11-01 CN CN 201220570526 patent/CN202883137U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810300A (en) * | 2020-07-03 | 2020-10-23 | 东方电气自动控制工程有限公司 | Gas turbine protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20151101 |
|
| EXPY | Termination of patent right or utility model |