CN102589878B - Portable type wet type clutch detection data collecting system and fault diagnosis method - Google Patents
Portable type wet type clutch detection data collecting system and fault diagnosis method Download PDFInfo
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Abstract
The invention relates to a portable type wet type clutch detecting data collecting system and a fault diagnosis method. The fault diagnosis method comprises the following steps of: 1) arranging a detecting data collecting system comprising electromagnetic rotating speed transducers, current type pressure sensors, a data collection instrument, a handheld type terminal and a speed changing box containing a plurality of wet type clutches and a plurality of transmission shaft speed detecting gears; 2) connecting the electromagnetic rotating speed transducer, the current type pressure sensor, wet type clutches, the data collection instrument and the handheld type terminal; 3) starting a vehicle to be operated at a neutral position and starting the handheld type terminal and the data collection instrument; 4) observing a signal receiving state through the handheld type terminal; 5) carrying out fault diagnosis on data at each detected point of all the electromagnetic rotating speed transducers and the current type pressure sensors; 6) after finishing the detection at a certain gear position, replacing the gear position of the speed changing box to repeatedly detect; and 7) after finishing signal collection and fault diagnosis of all the gear positions, outputting collected data and diagnosed results through a result output module in the handheld type terminal. The portable type wet type clutch detecting data collecting system and the fault diagnosis method, disclosed by the invention, can be widely applied to wet type clutches of various belt vehicle speed changing boxes.
Description
Technical field
The present invention relates to a kind of data acquisition system (DAS) and method for diagnosing faults, particularly about a kind of data acquisition system (DAS) of portable inspectiont for the tracked vehicle gearbox wet clutch and method for diagnosing faults.
Background technology
At present, the wet clutch fixed axle gearbox is used widely on numerous endless-track vehicles and engineering machinery, this wheel box is the organic synthesis of the technology such as mechanical, electrical, liquid, has that hydrodynamic drive, hydraulic stepless turn to, its telotisms of technical characterstic such as power shift and fluid drive, technical merit are advanced.Quick raising along with wheel box performance and the level of IT application, failure rate also strengthens thereupon, how wheel box is carried out effective status monitoring and fault diagnosis, control its running status, guarantee riding quality, and can in time carry out maintenance when breaking down sign, these problems day by day obtain producer and user's great attention.Facts have proved, the most outstanding also most important in Fault Diagnosis of Gearbox is exactly how these most common failure parts of wet type gear shift sleeve to be carried out the real vehicle monitoring, performance, life-span, the reliability important of the solution of this problem to wheel box and even car load, therefore, wet clutch state-detection data acquisition system (DAS) and to study method for diagnosing faults significant in research and development endless-track vehicle, construction machinery gear box.
At present, mainly there is following problem in existing tracked vehicle gearbox fault diagnosis system: 1, in data acquisition system (DAS), signal isolation module, signal condition module and signal acquisition module are separate, the integrated microcircuit design of unrealized unification, cause acquisition system to be formed by signal process box and data acquisition device two parts, be unfavorable for the requirement of real vehicle test to testing tool portability and convenience.Adopt the flexible high pressure oil pipe that gear box hydraulic oil is transferred into the pressure measurement valve plate when 2, hydraulic pressure signal gathers; setting pressure measuring pressure of sensor on the pressure measurement valve plate; although said apparatus has played the pressure buffer effect; protected sensor; but the length issue of hydraulic oil pipe has caused dynamic pressure waveform test distortion, fault diagnosis difficult judgment.Although 3 have adopted independent lithium battery box power supply, have guaranteed the collecting sensor signal quality, the lithium battery box volume is bigger than normal, does not accomplish the integrated of battery and acquisition instrument, and while causing the real vehicle test, difficulty is put and fixed to battery case.4, installation of sensors quantity is too many, causes the set-up time long, execute-in-place difficulty and time-consuming.Although 5, data acquisition system (DAS) adopts PXI cabinet and high-speed a/d modular converter, guaranteed the real-time of signals collecting, whole cabinet volume is bigger than normal, does not meet vehicle carried data collecting system to portable and microminiaturized requirement.6, just based on the judgement of individual signals boundary value size, diagnostic result is simple, unrealized localization of fault and failure prediction truly for fault diagnosis.7, excessively pursue fault diagnosis system complete function and powerful, cause diagnostic result inaccurate.
Summary of the invention
, for the problems referred to above, the purpose of this invention is to provide a kind of easy to carry, simple to operate, applied widely and Portable type wet type clutch detection data collecting system and the method for diagnosing faults that can detect in real time online.
For achieving the above object, the present invention takes following technical scheme: a kind of Portable type wet type clutch detects the data fault diagnostic method, it comprises the following steps: 1) arrange one and detect data acquisition system (DAS), it comprises magnetoelectric tachometric transducer, current type pressure transducer, data collecting instrument, handheld terminal and contains several wet clutches and the wheel box of several transmission shaft measure speed gearses, wherein, be provided with data reception module, fault diagnosis module, display module, output module, data memory module and power supply as a result in handheld terminal; 2) magnetoelectric tachometric transducer is connected cable with the current type pressure transducer and is connected with wet clutch in wheel box, and connection data Acquisition Instrument and handheld terminal; When 3) starting the operation of vehicle neutral gear, start handheld terminal and data collecting instrument; 4) observe receiving state signal by display module in handheld terminal,, if all signals are normal, carry out gear-change operation, the gear shift cycling to gear in the Vehicle Driving Cycle process is tested; 5) each magnetoelectric tachometric transducer and each current type pressure transducer flow to data collecting instrument with each measured point data, and transfer in the fault diagnosis module of handheld terminal and carry out fault diagnosis, if diagnostic result is normal, by data memory module storage of collected data; If diagnostic result shows a certain wet clutch fault, by display module, show in real time failure message, complete failure message storage and acquired data storage; 6) after completing a certain gear and detecting, change gearbox-gear, repeating said steps 5), until complete signals collecting and fault diagnosis under all gears; 7) after completing signals collecting and fault diagnosis under all gears, by in handheld terminal as a result output module with image data and fault diagnosis result output.
Described step 5) in, method for diagnosing faults in described fault diagnosis module comprises the following steps: (1) is according to the wet clutch operating oil pressure calculated signals oleo cushion time that receives, and according to predefined technical indicator, judge whether the surge time of oil pressure in the wet clutch cohesive process is long or too short, if long or too short, the number of times of bulk registration appearance, carry out next step; Otherwise whether the continuation gear shift detects surge time long or too short; (2) judge whether surge time long or too short number of times reaches the fault setting value with the ratio of total shift number,, if reach, points out this wet clutch fault, otherwise whether continuing gear shift, to detect surge time long or too short; (3) synchronize with described step (1), detect the gear fault according to the operating oil pressure signal of wet clutch and the tach signal of transmission shaft measure speed gears: whether normally (i) detect wet clutch operating oil pressure signal pressure, if normal, according to the wet clutch that is in bonding state, be defined as working as the gear of front gear box, this gear is current hydraulic pressure gear, and current hydraulic pressure gear displayed value is stored as hydraulic pressure gear last time, continue gear shift and detect; Otherwise, the prompting pressure fault; (ii) calculate ratio of gear according to the tach signal of transmission shaft measure speed gears, judge whether this ratio of gear equals the gear ratio value of certain gear,, if equal, show current mechanical gear, and this mechanical-type unit displayed value is stored as machinery gear last time, continue gear shift and detect; Otherwise, prompting ratio of gear fault; (iii) be that all gear consistent with hydraulic pressure gear last time in step (ii) with machinery gear contrast judgement last time with described step (i),, if consistent, continue gear shift and detect, otherwise, prompting gear fault; (4) whether the operating oil pressure signal pressure of continuation gear shift detection wet clutch two tach signal ratios whether normal, that calculate in transmission shaft testing gears sensor are equaling the ratio of gear of certain gear, and detect the gear fault: if (i) pressure is normal, show current hydraulic pressure gear, and hydraulic pressure gear contrast last time in (i) judges whether trip stop with this hydraulic pressure gear and step (3), if, unanimously without trip stop, continuing gear shift, gear detects; Otherwise, prompting gear fault; (ii) if ratio of gear equals the ratio of gear of a certain gear, show current mechanical gear, and should the machinery gear and the last time machinery gear contrast of step (3) in (ii) judge whether trip stop, detect if gear, unanimously without trip stop, continues gear shift; Otherwise, prompting gear fault; (5) the current hydraulic pressure gear in described step (4) and current mechanical gear are compared, judge whether gear is consistent,, if consistent, continue gear shift and detect, otherwise, current gear fault pointed out.
A kind of Portable type wet type clutch detection data collecting system of realizing above-mentioned detection data fault diagnostic method, it is characterized in that: it comprises fixed axle gearbox, magnetoelectric tachometric transducer, current type pressure transducer, data collecting instrument and handheld terminal, is provided with signal condition module, A/D conversion module and data transmission blocks in described data collecting instrument; Described wheel box contains several wet clutches and several transmission shaft measure speed gearses, each described wet clutch all connects described magnetoelectric tachometric transducer by X-over, and each described transmission shaft measure speed gears also all connects described current type pressure transducer by X-over; The tach signal of described transmission shaft measure speed gears is sent in described data collecting instrument after by described magnetoelectric tachometric transducer collection; The operating oil pressure signal of described wet clutch is sent in described data collecting instrument after by the collection of described current type pressure transducer, tach signal and the operating oil pressure signal condition that signal condition module in described data collecting instrument will receive and remove undesired signal after, send into the internal conversion of described A/D conversion module and become digital signal, and by described data transmission blocks, be sent to described handheld terminal, complete the collection that wet clutch is detected data.
Described handheld terminal comprises data reception module, fault diagnosis module, output module, display module, data memory module and power supply as a result, and described power supply is each parts and magnetoelectric tachometric transducer, current type pressure transducer and data collecting instrument power supply in described handheld terminal; Described data reception module receives the data of data transmission blocks transmission in described data collecting instrument, and send data in described fault diagnosis module, diagnostic result is sent to respectively in described output module as a result, display module and data memory module, described output module is as a result exported diagnostic result, and described display module demonstrates diagnostic result.
Described power acquisition lithium ion battery, described lithium ion battery and described handheld terminal integration packaging.
Data transfer mode between data reception module employing CAN bus transmission model in data transmission blocks and described handheld terminal in described data collecting instrument.
Data transfer mode between data reception module employing wireless transmission method in data transmission blocks and described handheld terminal in described data collecting instrument.
Signal condition module in described data collecting instrument comprises bandpass filter, presses modular converter, two voltage isolation modules, low-pass filter and signal conversion module frequently; The tach signal that described magnetoelectric tachometric transducer collects is pressed in modular converter through the described frequency of described bandpass filter input, and frequency signal is converted to after voltage signal and completes isolation and anti-interference rear output in the described voltage isolation module of input; The operating oil pressure signal that described current type pressure transducer collects in the described signal conversion module of described low-pass filter input, converts current signal to after voltage signal output after isolation in another described voltage isolation module of input.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention is owing to adopting data collecting instrument to carry out data acquisition, this data collecting instrument consists of signal condition module, A/D conversion module and data outputting module, completed the function unifications such as signal condition, signal isolation, analog to digital conversion and data transmission have been integrated, realized the integrated and microminiaturized of circuit design, dwindle the volume of data acquisition system (DAS), guaranteed the portability of system.2, the present invention is because the battery in handheld terminal adopts lithium ion battery, this lithium ion battery and hand-held display terminal integration packaging, so namely guaranteed to adopt stable lithium power supply to power separately, reduce the interference that collection signal is subject to, improved again the integration of whole system, the convenience while having improved the real vehicle operation.3, the present invention adopts X-over directly the current type pressure transducer to be connected with wheel box, high-pressure oil pipe and the pressure measurement valve plate of available technology adopting have been cancelled, so namely guaranteed the real-time that dynamic pressure signal gathers, reduce again the formation of data acquisition system (DAS), further improved the portability of system.4, the signal of the present invention's detection includes only the tach signal of wet clutch operating oil pressure signal and transmission shaft measure speed gears, the test signal negligible amounts, so namely shortened the time that the front system of real vehicle test is installed, reduced workload, saved again equipment cost, simplify the system formation, improved system portable.5, in the present invention, the data of data acquisition system (DAS) collection are utilized the CAN bus transmission model, have namely guaranteed the real-time of signal transmission, have realized again the requirement of Long-range Data Transmission.6, the present invention carries out data transmission because data acquisition system (DAS) namely can adopt the CAN bus transmission model, can also adopt wireless transmission method to carry out data transmission, the convenience of operation while greatly having improved the real vehicle test.7, the present invention carries out fault detect because the fault diagnosis module that adopts is based on gearbox gear-shift historical process data, and the fault detect object is wet clutch, so the fault judgement is more accurate.8, the present invention, owing to being provided with display module in handheld terminal, can show diagnostic result, failure message and trouble location in real time, and diagnostic procedure is quick, the diagnostic result intuitive display, understandable, system is easy and simple to handle.The present invention can extensively apply in various tracked vehicle gearbox wet clutches.
Description of drawings
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2 is handheld terminal structural representation of the present invention;
Fig. 3 is signal condition modular structure schematic diagram in data collecting instrument of the present invention;
Fig. 4 is working-flow figure of the present invention;
Fig. 5 is Troubleshooting Flowchart of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, Portable type wet type clutch detection data collecting system of the present invention comprises fixed axle gearbox 1, magnetoelectric tachometric transducer 2, current type pressure transducer 3, data collecting instrument 4 and handheld terminal 5, is provided with signal condition module 6, A/D conversion module 7 and data transmission blocks 8 in data collecting instrument 4.Wherein, wheel box 1 contains several wet clutch 9 and several transmission shaft measure speed gearses 10, each wet clutch 9 all connects magnetoelectric tachometric transducer 2 by X-over, each transmission shaft measure speed gears 10 also all connects current type pressure transducer 3 by X-over, below take the interior wet clutch 9 of wheel box 1 and a transmission shaft measure speed gears 10 as example.
The tach signal of wheel box 1 intermediate solid drive shaft measure speed gears 10 is sent in data collecting instrument 4 after gathering by magnetoelectric tachometric transducer 2; In wheel box 1, the operating oil pressure signal of each wet clutch 9 is sent in data collecting instrument 4 after gathering by current type pressure transducer 3.Tach signal and the operating oil pressure signal condition that signal condition modules 6 in data collecting instrument 4 will receive and remove undesired signal after, send into 7 internal conversions of A/D conversion module and become digital signal, and by data transmission blocks 8, be sent to handheld terminal 5, complete the collection that wet clutch is detected data.
As shown in Figure 1 and Figure 2, handheld terminal 5 of the present invention comprises data reception module 51, fault diagnosis module 52, output module 53, display module 54, data memory module 55 and power supply 56 as a result, power supply 56 is each parts power supply in handheld terminal 5, is magnetoelectric tachometric transducer 2, current type pressure transducer 3 and data collecting instrument 4 power supplies simultaneously.Data reception module 51 receives the data of data transmission blocks 8 transmission, and send data to the interior diagnosis of fault diagnosis module 52, diagnostic result is sent to respectively as a result in output module 53, display module 54 and data memory module 55, by output module 53 as a result with diagnostic result with file or report form output, and demonstrate diagnostic result by display module 54 so that when breaking down reminding user.
In above-described embodiment, power supply 55 can adopt lithium ion battery, this lithium ion battery and handheld terminal 5 integration packagings.
In the various embodiments described above, the data transfer mode between data transmission blocks 8 and data reception module 51 can adopt the CAN bus transmission model, also can adopt wireless transmission method.When adopting the CAN bus transmission model, the CAN bus adopts twin-channel USBCAN-II form, a channel transfer tach signal, and another one channel transfer pressure signal, can guarantee data transmission capacity and transfer rate like this.CAN bus communication cable length adopts step-by-step design, and real vehicle can increase flexibly as required length or shorten length while using.
In the various embodiments described above, the operating voltage of magnetoelectric tachometric transducer 2 and current type pressure transducer 3 is all direct current 24V.Connecting cable in Portable type wet type clutch detection data collecting system of the present invention between each parts adopts the double layer screen high-temperature cable, and cable sheath adopts the silica gel protection, and maximum operating temperature can reach 180 degree, and is namely high temperature resistant, can also prevent fires.
In the various embodiments described above, as shown in Figure 3, the signal condition module 6 in data collecting instrument 4 comprises bandpass filter 61, presses modular converter 62, two voltage isolation modules 63, low-pass filter 64 and signal conversion module 65 frequently.The tach signal that magnetoelectric tachometric transducer 2 collects is pressed in modular converter 62 through bandpass filter 61 input frequently, and frequency signal is converted to after voltage signal and completes isolation and anti-interference rear output in input voltage isolation module 63; The operating oil pressure signal that current type pressure transducer 3 collects in low-pass filter 64 input signal modular converters 65, converts current signal after voltage signal to and exports after the interior isolation of another voltage isolation module 63 of input.
As shown in Figure 4, Portable type wet type clutch method for diagnosing faults of the present invention is on the basis of Portable type wet type clutch detection data collecting system, based on tracked vehicle gearbox practical structures characteristics and wet clutch working pressure index, online detection and the fault diagnosis of realization to the wheel box wet clutch, its concrete steps are as follows:
1) magnetoelectric tachometric transducer 2 is connected with the current type pressure transducer and is connected by the interior wet clutch 9 of cable and wheel box 1, and connection data Acquisition Instrument 4 and handheld terminal 5;
When 2) starting the operation of vehicle neutral gear, start handheld terminal 5 and data collecting instrument 4;
3) observe receiving state signal by the display module 54 in handheld terminal 5,, if all signals are normal, carry out gear-change operation, the gear shift cycling to gear in the Vehicle Driving Cycle process is tested;
4) each magnetoelectric tachometric transducer 2 and each current type pressure transducer 3 flow to data collecting instrument 4 with each measured point data, after signal condition module 6 and 7 conversions of A/D conversion module, in entering the fault diagnosis module 52 of handheld terminal 5, wireless transmission method or CAN bus transmission model carry out fault diagnosis, if diagnostic result is normal, by data memory module 55 storage of collected data; If diagnostic result shows a certain wet clutch 9 faults, by display module 54, show in real time failure message, complete failure message storage and acquired data storage;
5) after completing a certain gear detection, handheld terminal 5 will point out this gear signal collection storage to complete, and whether will proceed signals collecting, change wheel box 1 gear this moment, repeating step 3), 4), until complete signals collecting and fault diagnosis under all gears;
6) after completing signals collecting and fault diagnosis under all gears, handheld terminal 5 will be according to image data and fault diagnosis record, by output module 53 as a result, generates these fault diagnosis report, and can the printout result.
As shown in Figure 5, above-mentioned steps 4) in fault diagnosis module 52 in method for diagnosing faults comprise the following steps:
(1) according to the 9 operating oil pressure calculated signals oleo cushion times of wet clutch that receive, and according to predefined technical indicator, judge whether the surge time of oil pressure in wet clutch 9 cohesive process is long or too short, if long or too short, the number of times of bulk registration appearance, carry out step (2); If surge time does not have longly do not have too shortly yet, proceed gear shift and detect, judge whether surge time is long or too short.
(2) judge whether surge time long or too short number of times reaches the fault setting value with the ratio of total shift number, if reach, point out this wet clutch 9 faults, if do not reach the fault setting value, do not point out this wrong operation of motor information, proceed gear shift and detect, judge whether surge time is long or too short.
(3) synchronize with step (1), according to the operating oil pressure signal of wet clutch 9 and the tach signal of wheel box 1 intermediate solid drive shaft measure speed gears 10, detect the gear fault:
(i) whether normal according to this operating oil pressure signal pressure of wet clutch 9 operating oil pressure input that receives, if pressure is normal, according to the wet clutch 9 that is in bonding state, be defined as working as the gear of front gear box 1, this gear is current hydraulic pressure gear, and show current hydraulic pressure gear, current hydraulic pressure gear displayed value is stored as hydraulic pressure gear last time, continues gear shift and detect, and carry out step (iii); , if pressure is undesired, point out pressure fault.
(ii) calculate ratio of gear according to the tach signal of transmission shaft measure speed gears 10, judge whether this ratio of gear equals the gear ratio value of certain gear, if equal, show current mechanical gear, and this mechanical-type unit displayed value is stored as machinery gear last time, continue gear shift and detect, and carry out step (iii); Otherwise, prompting ratio of gear fault.
(iii) be that all gear consistent with hydraulic pressure gear last time in step (ii) with machinery gear contrast judgement last time with above-mentioned steps (i),, if consistent, continue the gear shift detection and carry out step (4), otherwise, prompting gear fault.
(4) whether the operating oil pressure signal pressure of continuation gear shift detection wet clutch 9 two tach signal ratios whether normal, that calculate in transmission shaft testing gears sensor 2 are equaling the ratio of gear of certain gear, and judgement detection gear fault:
(i) if pressure is normal, show current hydraulic pressure gear, and hydraulic pressure gear contrast last time in (i) judges whether trip stop with this hydraulic pressure gear and step (3),, if gear does not unanimously have trip stop, continue gear shift and detect and carry out step (5); Otherwise, prompting gear fault.
(ii) if ratio of gear equals the ratio of gear of a certain gear, show current mechanical gear, and should the machinery gear and the last time machinery gear contrast of step (3) in (ii) judge whether trip stop,, if gear does not unanimously have trip stop, continue gear shift and detect and carry out step (5); Otherwise, prompting gear fault.
(5) the current hydraulic pressure gear in step (4) and current mechanical gear are compared, judge whether gear is consistent,, if consistent, continue gear shift and detect, otherwise, current gear fault pointed out.
In above steps, the operating oil pressure signal testing quantity of wet clutch 9 is difference with the difference of wheel box 1 model, only calculates the 9 oleo cushion times of wet clutch with pooling feature in test.The tach signal of transmission shaft measure speed gears 10 gathers quantity and is determined by what of wheel box 1 transmission shaft equally, and requires that every transmission shaft all must test rotating speed size from the input shaft to the output shaft.
The various embodiments described above only are used for explanation the present invention; the structure of each parts and connected mode all can change to some extent; on the basis of technical solution of the present invention; all improvement and equivalents of connection and the structure of individual component being carried out according to the principle of the invention, all should not get rid of outside protection scope of the present invention.
Claims (7)
1. a Portable type wet type clutch detects the data fault diagnostic method, and it comprises the following steps:
1) arrange one and detect data acquisition system (DAS), it comprises magnetoelectric tachometric transducer, current type pressure transducer, data collecting instrument, handheld terminal and contains several wet clutches and the wheel box of several transmission shaft measure speed gearses, wherein, be provided with data reception module, fault diagnosis module, display module, output module, data memory module and power supply as a result in handheld terminal;
2) magnetoelectric tachometric transducer is connected cable with the current type pressure transducer and is connected with wet clutch in wheel box, and connection data Acquisition Instrument and handheld terminal;
When 3) starting the operation of vehicle neutral gear, start handheld terminal and data collecting instrument;
4) observe receiving state signal by display module in handheld terminal,, if all signals are normal, carry out gear-change operation, the gear shift cycling to gear in the Vehicle Driving Cycle process is tested;
5) each magnetoelectric tachometric transducer and each current type pressure transducer flow to data collecting instrument with each measured point data, and transfer in the fault diagnosis module of handheld terminal and carry out fault diagnosis, if diagnostic result is normal, by data memory module storage of collected data; If diagnostic result shows a certain wet clutch fault, by display module, show in real time failure message, complete failure message storage and acquired data storage;
Method for diagnosing faults in described fault diagnosis module comprises the following steps:
(1) according to the wet clutch operating oil pressure calculated signals oleo cushion time that receives, and according to predefined technical indicator, judge whether the surge time of oil pressure in the wet clutch cohesive process is long or too short, if long or too short, the number of times of bulk registration appearance, carry out next step; Otherwise whether the continuation gear shift detects surge time long or too short;
(2) judge whether surge time long or too short number of times reaches the fault setting value with the ratio of total shift number,, if reach, points out this wet clutch fault, otherwise whether continuing gear shift, to detect surge time long or too short;
(3) synchronize with described step (1), according to the operating oil pressure signal of wet clutch and the tach signal of transmission shaft measure speed gears, detect the gear fault:
(ⅰ) whether detection wet clutch operating oil pressure signal pressure is normal, if normal, according to the wet clutch that is in bonding state, be defined as working as the gear of front gear box, this gear is current hydraulic pressure gear, and current hydraulic pressure gear displayed value is stored as hydraulic pressure gear last time, continue gear shift and detect; Otherwise, the prompting pressure fault;
(ⅱ) according to the tach signal of transmission shaft measure speed gears, calculate ratio of gear, judge whether this ratio of gear equals the gear ratio value of certain gear,, if equal, show current mechanical gear, and should be stored as machinery gear last time by machinery gear displayed value, continue gear shift and detect; Otherwise, prompting ratio of gear fault;
(ⅲ), with the hydraulic pressure gear and last time machinery gear contrast last time in described step (ⅰ) and step (ⅱ), judge whether that gear is consistent,, if consistent, continue gear shift and detect, otherwise, prompting gear fault;
(4) whether the operating oil pressure signal pressure of continuation gear shift detection wet clutch two tach signal ratios whether normal, that calculate in transmission shaft testing gears sensor equal the ratio of gear of certain gear, and detect the gear fault:
, if (ⅰ) pressure is normal, show current hydraulic pressure gear, and hydraulic pressure gear contrast last time in (ⅰ) judges whether trip stop with this hydraulic pressure gear and step (3), if gear, unanimously without trip stop, continues gear shift, detects; Otherwise, prompting gear fault;
If (ⅱ) ratio of gear equals a certain gear ratio of gear, show current mechanical gear, and should the machinery gear and the last time machinery gear contrast of step (3) in (ⅱ) judge whether trip stop, detect if gear, unanimously without trip stop, continues gear shift; Otherwise, prompting gear fault;
(5) the current hydraulic pressure gear in described step (4) and current mechanical gear are compared, judge whether gear is consistent,, if consistent, continue gear shift and detect, otherwise, current gear fault pointed out;
6) after completing a certain gear and detecting, change gearbox-gear, repeating said steps 5), until complete signals collecting and fault diagnosis under all gears;
7) after completing signals collecting and fault diagnosis under all gears, by in handheld terminal as a result output module with image data and fault diagnosis result output.
2. a realization detects the Portable type wet type clutch detection data collecting system of data fault diagnostic method as claimed in claim 1, it is characterized in that: it comprises fixed axle gearbox, magnetoelectric tachometric transducer, current type pressure transducer, data collecting instrument and handheld terminal, is provided with signal condition module, A/D conversion module and data transmission blocks in described data collecting instrument; Described wheel box contains several wet clutches and several transmission shaft measure speed gearses, each described wet clutch all connects described magnetoelectric tachometric transducer by X-over, and each described transmission shaft measure speed gears also all connects described current type pressure transducer by X-over;
The tach signal of described transmission shaft measure speed gears is sent in described data collecting instrument after by described magnetoelectric tachometric transducer collection; The operating oil pressure signal of described wet clutch is sent in described data collecting instrument after by the collection of described current type pressure transducer, tach signal and the operating oil pressure signal condition that signal condition module in described data collecting instrument will receive and remove undesired signal after, send into the internal conversion of described A/D conversion module and become digital signal, and by described data transmission blocks, be sent to described handheld terminal, complete the collection that wet clutch is detected data.
3. a kind of Portable type wet type clutch detection data collecting system as claimed in claim 2, it is characterized in that: described handheld terminal comprises data reception module, fault diagnosis module, output module, display module, data memory module and power supply as a result, and described power supply is each parts and magnetoelectric tachometric transducer, current type pressure transducer and data collecting instrument power supply in described handheld terminal; Described data reception module receives the data of data transmission blocks transmission in described data collecting instrument, and send data in described fault diagnosis module, diagnostic result is sent to respectively in described output module as a result, display module and data memory module, described output module is as a result exported diagnostic result, and described display module demonstrates diagnostic result.
4. a kind of Portable type wet type clutch detection data collecting system as claimed in claim 3, is characterized in that: described power acquisition lithium ion battery, described lithium ion battery and described handheld terminal integration packaging.
5. a kind of Portable type wet type clutch detection data collecting system as claimed in claim 3, is characterized in that: the employing of the data transfer mode between data reception module CAN bus transmission model in data transmission blocks and described handheld terminal in described data collecting instrument.
6. a kind of Portable type wet type clutch detection data collecting system as claimed in claim 3, is characterized in that: the employing of the data transfer mode between data reception module wireless transmission method in data transmission blocks and described handheld terminal in described data collecting instrument.
7., as claim 2 or 3 or 4 or 5 or 6 described a kind of Portable type wet type clutch detection data collecting systems, it is characterized in that: the signal condition module in described data collecting instrument comprises bandpass filter, presses modular converter, two voltage isolation modules, low-pass filter and signal conversion module frequently; The tach signal that described magnetoelectric tachometric transducer collects is pressed in modular converter through the described frequency of described bandpass filter input, and frequency signal is converted to after voltage signal and completes isolation and anti-interference rear output in the described voltage isolation module of input; The operating oil pressure signal that described current type pressure transducer collects in the described signal conversion module of described low-pass filter input, converts current signal to after voltage signal output after isolation in another described voltage isolation module of input.
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| CN110398684B (en) * | 2019-07-10 | 2021-11-23 | 北京汽车股份有限公司 | Fault diagnosis method and system for automobile clutch switch and automobile |
| CN113505900B (en) * | 2021-07-11 | 2023-12-01 | 中国国家铁路集团有限公司 | Digital maintenance platform and method for auxiliary converter module of motor train unit |
| CN115107824B (en) * | 2022-07-26 | 2024-04-09 | 天津铁路信号有限责任公司 | Electrohydraulic vehicle speed reducer monitoring system |
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| CN101799361B (en) * | 2010-01-27 | 2011-08-10 | 北京信息科技大学 | Fault diagnosis method and detection system of vehicle transmission |
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