CN106970282B - ECU working state monitoring device and method of electric control diesel engine - Google Patents
ECU working state monitoring device and method of electric control diesel engine Download PDFInfo
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- CN106970282B CN106970282B CN201710261310.2A CN201710261310A CN106970282B CN 106970282 B CN106970282 B CN 106970282B CN 201710261310 A CN201710261310 A CN 201710261310A CN 106970282 B CN106970282 B CN 106970282B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The invention relates to the technical field of circuit fault judgment of non-road electric control diesel engines, in particular to an ECU working state monitoring device and method of an electric control diesel engine. An ECU working state monitoring device of an electric control diesel engine comprises an electric control unit, a system self-checking lamp, a power supply relay, a switch, a storage battery and a working indicator lamp; the positive electrode of the storage battery is connected with one end of the switch, the other end of the switch is respectively connected with the logic power supply input end of the electric control unit and the positive electrode of the system self-checking lamp, and the negative electrode of the system self-checking lamp is connected with the system self-checking lamp control end of the electric control unit; the positive pole of battery still with power relay's positive pole is connected, power relay's negative pole with the electrical control unit is connected. According to the invention, a worker can monitor the working state of the ECU controlling the diesel engine through the system self-checking lamp and the working indicator lamp, and can judge the fault source of the circuit according to the working state of the ECU.
Description
Technical Field
The invention relates to the technical field of circuit fault judgment of non-road electric control diesel engines, in particular to an ECU working state monitoring device and method of an electric control diesel engine.
Background
Under the current situation of the third-stage emission regulation of the powerful propulsion of the non-road engine, the diesel engines of three or more countries are applied to various fields of non-roads, the circuit of the whole vehicle becomes more complex, the failure rate is further increased, meanwhile, the shortage and shortage of electrical appliance knowledge of diesel engine service personnel can make users intuitively judge the working state of the ECU and process the basic circuit failure, and the problem that the electronic control diesel engine is the most troublesome at present is solved.
At present, most of off-road machines or agricultural machines are not provided with a cab, and in the process of outdoor storage and use, electrical elements are easy to enter water or dust, so that the electrical elements are damaged, an ECU (electronic control unit) cannot be electrified to work, a user forcibly starts a diesel engine under the condition of no knowledge, and other electrical elements or machines of the diesel engine are damaged.
Disclosure of Invention
The invention provides a device and a method for monitoring the working state of an ECU (electronic control unit) of an electric control diesel engine aiming at the problems in the prior art, wherein a worker can monitor the working state of the ECU of the electric control diesel engine through a system self-checking lamp and a working indicator lamp and can judge a fault source of a circuit according to the working state of the ECU.
The technical scheme adopted by the invention for solving the technical problem is as follows: an ECU working state monitoring device of an electric control diesel engine comprises an electric control unit, a system self-checking lamp, a power supply relay, a switch, a storage battery and a working indicator lamp;
the positive electrode of the storage battery is connected with one end of the switch, the other end of the switch is respectively connected with the logic power supply input end of the electric control unit and the positive electrode of the system self-checking lamp, and the negative electrode of the system self-checking lamp is connected with the system self-checking lamp control end of the electric control unit;
the positive electrode of the storage battery is also connected with the positive electrode of the power supply relay, the negative electrode of the power supply relay is connected with the electric control unit, the negative electrode of the power supply relay is also connected with the positive electrode of the working indicator light, and the negative electrode of the working indicator light is connected with the negative electrode of the storage battery;
and the negative electrode of the storage battery is connected with the ground wire end of the ECU of the electronic control unit.
Preferably, the positive pole of battery respectively with power relay's power relay input end and coil power input end are connected, power relay's coil's earthing terminal with the power relay control end of electrical unit is connected, power relay's power relay output with the ECU main power source end of electrical unit is connected, power relay's power relay output with the positive pole of work pilot lamp is connected.
Preferably, a relay switch is arranged between the input end of the power relay and the output end of the power relay, and a relay inductor and a relay diode are connected in parallel between the coil power input end of the power relay and the grounding end of the coil.
Preferably, the system self-checking lamp comprises a self-checking lamp and a self-checking lamp diode, and a cathode of the self-checking lamp diode is connected with a control end of the system self-checking lamp of the electronic control unit.
Preferably, the working indicator lamp comprises an indicator lamp and an indicator lamp diode, and the cathode of the indicator lamp diode is connected with the cathode of the storage battery.
The ECU working condition monitoring method of an electronic control diesel engine, under the condition that ECU ground wire end of the electronic control unit is grounded, when the switch is closed, the logic power input end of the electronic control unit obtains the logic power; after the logic power supply input end of the electric control unit obtains a logic power supply, the electric control unit sends low level signals to the system self-checking lamp control end and the power supply relay control end of the electric control unit, so that the system self-checking lamp is turned on, and the power supply relay is turned off; when the power supply relay is closed, the working indicator lamp is lightened; after the working indicator lamp is lightened, the electric control unit can detect the current signal and the historical fault of each sensor, and when the detection result is normal, the electric control unit can disconnect the low level signal at the control end of the system self-checking lamp of the electric control unit to enable the system self-checking lamp to be extinguished; the system self-checking lamp is turned on first and then turned off, the working indicator lamp is turned on all the time and is set to be in a first state, and the electric control system and the circuit are judged to be in a normal state.
Preferably, the system self-checking lamp is always on, the work indicator lamp is always on, the state II is set, the electric control unit is judged to have historical faults or current faults, and the current faults of the signals of the sensors need to be repaired or the historical faults of the electric control unit need to be cleared by a diagnosis device.
Preferably, the system self-checking lamp is always on, the working indicator lamp is always off, and the state is set to be the third state, and the main power supply end of the ECU of the electronic control unit is judged to be lack of power supply, whether the power supply relay is damaged or not needs to be overhauled or whether the positive pole of the power supply relay is connected with the positive pole of the storage battery.
Preferably, the system self-checking lamp is turned off all the time, the working indicator lamp is turned on all the time, the state is set to be four, the ECU ground end of the electronic control unit is judged to be disconnected with the negative pole of the storage battery, and whether the connection between the ECU ground end of the electronic control unit and the negative pole of the storage battery is good needs to be overhauled.
Preferably, the system self-checking lamp is turned off all the time, the working indicator lamp is set to be in a fifth state all the time, and whether a lead from the switch to the logic power supply input end of the electric control unit is in an open circuit state or not is judged to be short of the logic power supply at the logic power supply input end of the electric control unit and needs to be overhauled.
The invention has the advantages that 1, faults can be accurately identified and processed by monitoring the working state of the ECU of the electric control diesel engine, the engine is protected, and the fault rate of a circuit is reduced; 2. the monitoring indicator lamp can be integrated in the combination instrument, has strong pertinence and intuitive fault, and is convenient for users to use and maintain.
Drawings
FIG. 1 is a schematic structural diagram of an ECU working state monitoring device of an electric control diesel engine according to the invention;
the system comprises an electronic control unit 1, a system self-checking lamp 2, a power supply relay 3, a switch 4, a storage battery 5, a working indicator lamp 6.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1, an ECU operating condition monitoring device for an electrically controlled diesel engine includes an electronic control unit 1, a system self-check lamp 2, a power relay 3, a switch 4, a storage battery 5, and an operation indicator lamp 6. The positive pole of battery 5 with the one end of switch 4 is connected, the other end of switch 4 respectively with electrical unit 1's logic power input end and the anodal of system self-checking lamp 2 is connected, the negative pole of system self-checking lamp 2 with electrical unit 1's system self-checking lamp control end is connected. The positive pole of battery 5 still with power relay 3's positive pole is connected, power relay 3's negative pole with electrical unit 1 connects, power relay 3's negative pole still with the anodal of work pilot lamp 6 is connected, the negative pole of work pilot lamp 6 with the negative pole of battery 5 is connected. And the negative electrode of the storage battery 5 is connected with the ground wire end of the ECU of the electronic control unit 1.
Wherein, 86 pins of the relay are the power input ends of the coil, 85 pins are the grounding ends of the coil, 30 pins are the input ends of the power relay, and 87 pins are the output ends of the power relay. The K01 end is a control end of a system self-checking lamp, the K02 end is a logic power input end, the K03 end is a control end of a power relay, the K04 end is a main power end of an ECU, and the K05 end is an earth end of the ECU.
The system self-checking lamp 2 comprises a self-checking lamp and a self-checking lamp diode, and the negative electrode of the self-checking lamp diode is connected with the control end of the system self-checking lamp of the electric control unit 1. The working indicator lamp 6 comprises an indicator lamp and an indicator lamp diode, and the cathode of the indicator lamp diode is connected with the cathode of the storage battery 5.
The utility model provides a ECU operating condition monitoring method of automatically controlled diesel engine, when switch 4 closure, the logic power input of automatically controlled unit 1 obtains logic power, then, the system self-checking lamp control end of automatically controlled unit 1, power relay control end can give system self-checking lamp 2 and power relay 3 low level signal, let system self-checking lamp 2 light, power relay 3 closure, work pilot lamp 6 lights, then, automatically controlled unit 1 can detect the current signal and the historical fault of each sensor, the logic power input low level signal of detecting system self-checking lamp 2 can be disconnected to the detecting system when normal, let system self-checking lamp 2 extinguish, and work pilot lamp 6 can be in the light state always, show that electrically controlled system and circuit are in normal condition this moment, can start diesel engine work. Namely, the state one: the system self-checking lamp 2 is turned on first and then turned off, and the work indicating lamp 6 is turned on all the time, so that the electric control system and the circuit are in a normal state.
And if the system self-test lamp 2 and the working indicator lamp 6 are always in the lighting state when the switch 4 is closed, the historical fault or the current fault of the electric control unit 1 is indicated, and the current fault of each sensor signal needs to be repaired or the historical fault of the electric control unit 1 needs to be cleared by using a diagnostic device. Namely, the state two: the system self-checking lamp 2 is always on, and the working indicator lamp 6 is always on, which indicates that the electric control unit 1 has historical faults or current faults.
And if the switch 4 is closed, the system self-checking lamp 2 is always in a lighting state and the working indicator lamp 6 is turned off, which indicates that the main power supply end of the ECU of the electric control unit 1 lacks a power supply and whether the power supply relay 3 is damaged or not and whether the positive electrode of the power supply relay 3 is connected with the positive electrode of the storage battery 5 or not. Namely, the state three: the system self-test lamp 2 is always on, and the work indicator lamp 6 is always off, which indicates that the main power supply end of the ECU 1 lacks power supply.
If the switch 4 is closed, the system self-checking lamp 2 is turned off and the working indicator lamp 6 is turned on, which means that the logic power supply passes through the interior of the electronic control unit 1 to make the voltage of the main power supply of the ECU be raised and pass through the working indicator lamp 6 to the negative electrode of the storage battery 5, so that the working indicator lamp 6 falsely displays the false image that the electronic control unit 1 works normally, which indicates that the ECU ground wire end of the electronic control unit 1 is disconnected with the negative electrode of the storage battery 5, the ECU ground wire end lacks a ground wire, and the negative ground wire of the ECU ground wire end of the electronic control unit 1 needs to be repaired at this time. Namely, state four: the system self-checking lamp 2 is turned off all the time, and the working indicator lamp 6 is turned on all the time, which indicates that the ECU ground wire end of the electric control unit 1 and the cathode of the storage battery 5 are disconnected.
If the switch 4 is closed, the system self-test lamp 2 and the working indicator lamp 6 are both in an off state, which indicates that the logic power input end of the electronic control unit 1 lacks logic power, and whether the lead between the switch 4 and the electronic control unit 1 is in an open circuit state needs to be checked. Namely, the state five: the system self-checking lamp 2 is turned off all the time, and the work indicating lamp 6 is turned off all the time, which indicates that the logic power supply input end of the electric control unit 1 lacks logic power supply.
The five working states of the system self-checking lamp 2 and the working indicator lamp 6 cover all fault modes of the ECU, all circuit faults caused by the power supply of the electronic control unit 1 can be rapidly identified and processed through the system self-checking lamp 2 and the working indicator lamp 6, and the use of a user is greatly facilitated.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the spirit and scope of the present invention. Various modifications and improvements of the technical solutions of the present invention may be made by those skilled in the art without departing from the design concept of the present invention, and the technical contents of the present invention are all described in the claims.
Claims (7)
1. The utility model provides a ECU operating condition monitoring devices of automatically controlled diesel engine which characterized in that: the system comprises an electric control unit (1), a system self-checking lamp (2), a power supply relay (3), a switch (4), a storage battery (5) and a work indicator lamp (6);
the positive electrode of the storage battery (5) is connected with one end of the switch (4), the other end of the switch (4) is respectively connected with the logic power supply input end of the electric control unit (1) and the positive electrode of the system self-checking lamp (2), and the negative electrode of the system self-checking lamp (2) is connected with the system self-checking lamp control end of the electric control unit (1);
the positive electrode of the storage battery (5) is also connected with the positive electrode of the power supply relay (3), the negative electrode of the power supply relay (3) is connected with the electric control unit (1), the negative electrode of the power supply relay (3) is also connected with the positive electrode of the work indicator lamp (6), and the negative electrode of the work indicator lamp (6) is connected with the negative electrode of the storage battery (5);
the negative electrode of the storage battery (5) is connected with the ground wire end of the ECU of the electronic control unit (1);
the positive pole of the storage battery (5) is connected with the power supply relay input end and the coil power supply input end of the power supply relay (3), the grounding end of a coil of the power supply relay (3) is connected with the power supply relay control end of the electric control unit (1), the power supply relay output end of the power supply relay (3) is connected with the ECU main power supply of the electric control unit (1), and the power supply relay output end of the power supply relay (3) is connected with the positive pole of the work indicator lamp (6);
the system self-checking lamp (2) comprises a self-checking lamp and a self-checking lamp diode, and the cathode of the self-checking lamp diode is connected with the control end of the system self-checking lamp of the electric control unit (1);
the working indicator lamp (6) comprises an indicator lamp and an indicator lamp diode, and the cathode of the indicator lamp diode is connected with the cathode of the storage battery (5).
2. The ECU operating condition monitoring device of an electrically controlled diesel engine as claimed in claim 1, characterized in that: a relay switch is arranged between the input end of the power supply relay (3) and the output end of the power supply relay, and a relay inductor and a relay diode are connected in parallel between the coil power supply input end of the power supply relay (3) and the grounding end of the coil.
3. An ECU operating condition monitoring method of an electronically controlled diesel engine, which employs the ECU operating condition monitoring device of claim 1, characterized in that: under the condition that the ground wire end of an ECU of the electric control unit (1) is grounded, when the switch (4) is closed, the logic power supply input end of the electric control unit (1) obtains a logic power supply; after a logic power supply input end of the electric control unit (1) obtains a logic power supply, the electric control unit (1) sends low-level signals to a system self-checking lamp control end and a power supply relay control end of the electric control unit (1), so that the system self-checking lamp (2) is lightened, and the power supply relay (3) is closed; when the power supply relay (3) is closed, the working indicator lamp (6) is lightened; after the working indicator lamp (6) is lightened, the electric control unit (1) can detect the current signals and the historical faults of each sensor, and when the detection result is normal, the electric control unit (1) can disconnect the low-level signals at the control end of the system self-check lamp of the electric control unit (1) to enable the system self-check lamp (2) to be extinguished; the system self-checking lamp (2) is turned on first and then turned off, the working indicator lamp (6) is turned on all the time and set to be in a first state, and the electric control system and the circuit are judged to be in a normal state.
4. The method for monitoring the ECU operating state of the electrically controlled diesel engine according to claim 3, characterized in that: and (3) the system self-checking lamp (2) is always on, the working indicator lamp (6) is always on, and the state II is set, so that the electronic control unit (1) is judged to have a historical fault or a current fault, and the current fault of each sensor signal needs to be repaired or the historical fault of the electronic control unit (1) needs to be cleared by using a diagnosis device.
5. The method for monitoring the ECU operating state of the electrically controlled diesel engine according to claim 3, characterized in that: and the system self-checking lamp (2) is always on, the working indicator lamp (6) is always off, and the state is set to be the third state, and whether the ECU main power supply of the electric control unit (1) is short of the power supply and the power supply relay (3) needs to be overhauled or not or whether the positive pole of the power supply relay (3) is connected with the positive pole of the storage battery (5) or not is judged.
6. The method for monitoring the ECU operating state of the electrically controlled diesel engine according to claim 3, characterized in that: the system self-checking lamp (2) is turned off all the time, the working indicator lamp (6) is turned on all the time and is set to be in a state IV, the ECU ground end of the electric control unit (1) is judged to be in open circuit with the negative pole of the storage battery (5), and whether the connection between the ECU ground end of the electric control unit (1) and the negative pole of the storage battery (5) is good needs to be overhauled or not.
7. The method for monitoring the ECU operating state of the electrically controlled diesel engine according to claim 3, characterized in that: the system self-checking lamp (2) is turned off all the time, the working indicator lamp (6) is turned off all the time and is set to be in a fifth state, and whether the logic power supply input end of the electric control unit (1) is short of a logic power supply and a lead from the switch (4) to the logic power supply input end of the electric control unit (1) needs to be overhauled is in an open circuit state or not is judged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710261310.2A CN106970282B (en) | 2017-04-20 | 2017-04-20 | ECU working state monitoring device and method of electric control diesel engine |
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| CN201710261310.2A CN106970282B (en) | 2017-04-20 | 2017-04-20 | ECU working state monitoring device and method of electric control diesel engine |
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| CN106970282A CN106970282A (en) | 2017-07-21 |
| CN106970282B true CN106970282B (en) | 2023-04-11 |
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| CN113933691A (en) * | 2021-07-30 | 2022-01-14 | 东风商用车有限公司 | Switch endurance automatic testing and monitoring system based on MCU control |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0353331A1 (en) * | 1988-08-05 | 1990-02-07 | Robert Bosch Gmbh | Fault finding system with selective interactive communication |
| CN101865773B (en) * | 2010-02-01 | 2012-05-02 | 东风朝阳柴油机有限责任公司 | Simple whole machine diagnostic unit of electric control diesel engine |
| CN102455416A (en) * | 2010-10-20 | 2012-05-16 | 埃泰克汽车电子(芜湖)有限公司 | Self-check system of LED alarm lamp of automobile instrument |
| CN104535856B (en) * | 2014-12-17 | 2017-06-23 | 万向钱潮股份有限公司 | A kind of magneto-rheological vibration damper failure and fault detection method |
| CN206725672U (en) * | 2017-04-20 | 2017-12-08 | 星光农机股份有限公司 | A kind of ECU apparatus for monitoring working state of electronic controlled diesel |
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