CN112082746A - Motor train unit wiper swing abnormity monitoring and self-optimizing system - Google Patents
Motor train unit wiper swing abnormity monitoring and self-optimizing system Download PDFInfo
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- CN112082746A CN112082746A CN202010928172.0A CN202010928172A CN112082746A CN 112082746 A CN112082746 A CN 112082746A CN 202010928172 A CN202010928172 A CN 202010928172A CN 112082746 A CN112082746 A CN 112082746A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
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Abstract
The invention relates to a monitoring and self-optimizing system for abnormal swinging of a wiper of a motor train unit, which comprises the following components: the infrared sensing counter is used for collecting the current swinging times of the wiper in a fixed period in real time; the oil pressure sensor is used for monitoring the current oil quantity of the wiper driving device in real time; the windshield wiper control unit is respectively connected with the infrared sensing counter and the oil pressure sensor, is used for comparing the current swinging times with a swinging expected value, adjusting the magnitude of driving wind pressure output to the windshield wiper driving device in real time according to a comparison result, and is also used for sending an alarm signal to an alarm when judging that the current oil quantity is lower than an oil quantity threshold value corresponding to the maximum leakage quantity of the hydraulic oil; and the alarm is used for alarming according to the alarm signal. The invention can adjust the driving wind pressure of the wiper in real time, always control the swinging times of the wiper in a qualified range, avoid abnormal conditions such as over-fast or over-slow swinging times and the like, improve the running stability of the wiper and ensure the driving safety.
Description
Technical Field
The invention relates to the technical field of motor train unit wipers, in particular to a motor train unit wiper swing abnormity monitoring and self-optimizing system.
Background
The wiper of the motor train unit is an important facility for keeping a driver in a good visual field when the motor train unit travels in severe weather conditions such as rainstorm, snowstorm and the like, and components such as the wiper and the like are one of important contents of maintenance work in the maintenance stage of the motor train unit. In 2019, when a CRH380B/BG type motor train unit four-level overhaul project is carried out by a manufacturing center of a middle-sized and long-sized high-speed motor train unit, after a repair process, abnormal wiper swinging faults occur successively in 11 (more than half) trains in 21 trains, the operation of the vehicles is influenced, and hidden dangers are brought to the driving safety of the motor train unit.
At present, in order to reduce abnormal swinging faults of a wiper of a motor train unit, the following two modes are generally adopted:
1. the air pressure at the air supply interface of the windshield wiper driving device is adjusted by adjusting the proportional valve on the electro-pneumatic control valve plate, so that the swinging times of the windshield wiper are optimized. This scheme only can solve some such troubles, can't solve because of proportional valve and the wiper drive arrangement cooperation bad wiper swing abnormal problem who takes place, can't carry out real-time control to wiper swing abnormal fault simultaneously, also can't realize the real-time regulation of wind pressure.
2. The wiper drive (wiper motor) is replaced regularly during maintenance. According to the scheme, early warning cannot be carried out on abnormal swinging faults of the wiper, the operation difficulty of replacing the wiper motor is high, the number of operators is large, the workload of the operators is increased to a great extent, the production period is influenced, the cost of the wiper motor is high, and the maintenance cost of the motor train unit is increased.
Disclosure of Invention
On the basis, the system for monitoring and self-optimizing the swing abnormity of the wiper of the motor train unit is necessary to solve the problems that the existing scheme for solving the swing abnormity fault of the wiper of the motor train unit usually has larger workload, more operating personnel are involved, the production period of a vehicle is seriously influenced, the real-time monitoring on the swing abnormity fault of the wiper cannot be carried out and the like.
In order to solve the problems, the invention adopts the following technical scheme:
the utility model provides a EMUs wiper swing anomaly monitoring and self-optimization system, includes:
the infrared sensing counter is arranged at the edge of a windshield glass of the motor train unit and is used for collecting the current swinging times of the wiper in a fixed period in real time;
the oil pressure sensor is arranged in a shock absorber of the windshield wiper driving device and used for monitoring the current oil quantity of the windshield wiper driving device in real time;
the windshield wiper control unit is respectively connected with the infrared sensing counter and the oil pressure sensor, is used for comparing the current swinging times with a swinging expected value, adjusting the magnitude of driving wind pressure output to the windshield wiper driving device in real time according to a comparison result, and is also used for sending an alarm signal to an alarm when judging that the current oil quantity is lower than an oil quantity threshold value corresponding to the maximum leakage quantity of hydraulic oil;
and the alarm is connected with the wiper control unit and used for giving an alarm according to the alarm signal.
Compared with the prior art, the invention has the following beneficial effects:
the system for monitoring and self-optimizing the swing abnormity of the wiper of the motor train unit is a closed-loop monitoring system, can adjust the driving wind pressure of the wiper in real time, always control the swing times of the wiper in a qualified range, avoid abnormal conditions such as too fast swing times (influencing the service life of the wiper) or too slow swing times (not being cleanly scraped) and the like, improve the running stability of the wiper, ensure that the sight of a driver is not interfered by rain, snow and the like when the natural weather is severe, ensure the driving safety, simultaneously shorten the debugging period of the motor train unit, reduce the failure rate when the motor train unit leaves the factory, and save the production and maintenance cost of the motor train unit.
Drawings
FIG. 1 is a block diagram of a system for monitoring abnormal swinging of a wiper of a motor train unit and self-optimizing the wiper of the motor train unit according to an embodiment of the invention;
FIG. 2 is a schematic view of an installation position of an infrared sensing counter;
fig. 3 is a control flow diagram of the wiper control unit in one embodiment of the present invention.
Detailed Description
The invention sets a motor train unit wiper swing abnormity monitoring and self-optimizing system in the existing pneumatic wiper system, plays the functions of monitoring the swing condition of the wiper in real time and automatically optimizing and adjusting, and controls the swing times of the wiper in a qualified range all the time. The technical solution of the present invention will be described in detail with reference to the accompanying drawings and preferred embodiments.
In one embodiment, as shown in fig. 1, the invention provides a motor train unit wiper swing abnormality monitoring and self-optimizing system, which includes an infrared sensing counter 1, an oil pressure sensor 2, a wiper control unit 3 and an alarm 4, wherein the infrared sensing counter 1, the oil pressure sensor 2 and the alarm 4 are respectively electrically connected with the wiper control unit 3, and wherein:
(1) as shown in fig. 2, the infrared sensing counter 1 is installed at the edge of the windshield glass 5 of the motor train unit, and in a fixed period (for example, 60 seconds is a fixed period), every time a wiper arm of the wiper 6 passes by, the count of the infrared sensing counter 1 is increased by 1, the infrared sensing counter 1 collects and records the swing frequency of the wiper 6 in the fixed period in real time, and feeds back the collected result, that is, the current swing frequency of the wiper 6 in the fixed period, to the wiper control unit 3; the wiper 6 in this embodiment is a pneumatic wiper, which mainly includes a main arm, a parallel arm, a wiper driving device, an electro-pneumatic control valve plate, a water spray button, and the like;
(2) an oil pressure sensor 2 is arranged in a shock absorber of the windshield wiper driving device, and the oil pressure sensor 2 is used for monitoring the current oil quantity (or oil pressure) of the windshield wiper driving device in real time and feeding back the collected current oil quantity to a windshield wiper control unit 3;
(3) the wiper control unit 3 receives the current swinging times fed back by the infrared sensing counter 1 and the current oil amount fed back by the oil pressure sensor 2, compares the current swinging times with a swinging expected value, and adjusts the magnitude of the driving wind pressure output to the wiper driving device in real time according to the comparison result, so that the wiper driving device drives the wiper 6 to swing according to the adjusted driving wind pressure, and further the purpose of controlling the swinging times of the wiper 6 in a qualified range all the time is achieved; in addition, the wiper control unit 3 is further configured to determine whether the current oil amount is lower than an oil amount threshold corresponding to the maximum hydraulic oil leakage amount, and when the wiper control unit 3 determines that the current oil amount is lower than the oil amount threshold corresponding to the maximum hydraulic oil leakage amount, send an alarm signal to the alarm 4.
Further, as a specific embodiment, the wiper control unit 3 compares the current oscillating frequency with an expected oscillating value, and adjusts the magnitude of the driving wind pressure output to the wiper driving device in real time according to the comparison result, and the control flow is as shown in fig. 3, and specifically includes the following steps:
step one (S1): receiving an input swing expected value i0 and a driving wind pressure Pw;
step two (S2): acquiring the current swinging times i acquired by the infrared induction counter 1 in real time;
step three (S3): judging whether the current swinging times i are equal to the swinging expected value i0, if so, executing a step four (S4); if not, executing a step five (S5);
step four (S4): outputting the driving wind pressure Pw to a windshield wiper driving device, so that the windshield wiper driving device drives a windshield wiper arm to swing according to the driving wind pressure Pw;
step five (S5): judging whether the current swinging times i are greater than the swinging expected value i0, if so, executing a sixth step (S6); if not, executing a seventh step (S7);
step six (S6): the driving wind pressure Pw is reduced to the driving wind pressure Pw-, so that the windshield wiper driving device drives the windshield wiper arm to swing according to the driving wind pressure Pw-;
step seven (S7): the driving wind pressure Pw is increased to the driving wind pressure Pw + +, so that the windshield wiper driving device drives the windshield wiper arm to swing according to the driving wind pressure Pw + +;
step eight (S8): and outputting the correspondingly adjusted driving wind pressure to a wiper driving device, and returning to the step two.
(4) An alarm 4 is further arranged in the motor train unit wiper swing abnormity monitoring and self-optimizing system, the alarm 4 receives an alarm signal sent by the wiper control unit 3 and gives an alarm according to the alarm signal, namely when hydraulic oil in the shock absorber leaks to a certain value, the wiper control unit 3 triggers the alarm 4 to remind a vehicle maintenance person to process in time.
The monitoring of EMUs wiper swing anomaly and from optimizing system that this embodiment provided is a closed loop monitored control system, the drive wind pressure of wiper can be adjusted in real time to this system, control wiper swing number of times all the time in qualified scope, avoid appearing the swing number of times unusual circumstances such as too fast (influence wiper life-span) or too slow (scrape unclean), promote wiper operating stability, guarantee when natural weather is abominable, driver's sight is not disturbed such as sleet, guarantee driving safety, adopt this from optimizing system can shorten EMUs debugging cycle simultaneously, reduce the fault rate when the vehicle dispatches from the factory, practice thrift EMUs production and maintenance cost. By the aid of the system, the swing condition of the wiper of the CRH380B/BG type motor train unit can be monitored and adjusted in real time, fault early warning is added, whether faults occur is judged by checking fault information, detection and finding are facilitated, and fault detection efficiency is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (3)
1. The utility model provides a EMUs wiper swing anomaly monitoring and self-optimization system which characterized in that includes:
the infrared sensing counter (1) is arranged at the edge of a windshield glass (5) of the motor train unit and is used for collecting the current swinging times of a wiper (6) in a fixed period in real time;
the oil pressure sensor (2) is arranged in a shock absorber of the windshield wiper driving device and used for monitoring the current oil quantity of the windshield wiper driving device in real time;
the wiper control unit (3) is respectively connected with the infrared sensing counter (1) and the oil pressure sensor (2) and is used for comparing the current swinging times with a swinging expected value, adjusting the magnitude of driving wind pressure output to the wiper driving device in real time according to a comparison result, and sending an alarm signal to an alarm (4) when the current oil quantity is judged to be lower than an oil quantity threshold value corresponding to the maximum leakage quantity of hydraulic oil;
and the alarm (4) is connected with the wiper control unit (3) and is used for giving an alarm according to the alarm signal.
2. The system for monitoring and self-optimizing swing abnormality of wiper of motor train unit according to claim 1, wherein the wiper control unit (3) compares the current swing frequency with a swing expected value, and adjusts the magnitude of the driving wind pressure output to the wiper driving device in real time according to the comparison result comprises the steps of:
the method comprises the following steps: receiving the input swing expected value and the input driving wind pressure;
step two: acquiring the current swinging times acquired by the infrared induction counter (1) in real time;
step three: judging whether the current swinging times are equal to the swinging expected value or not, if so, executing a fourth step; if not, executing the fifth step;
step four: outputting the driving wind pressure to the wiper driving device;
step five: judging whether the current swinging times are larger than the swinging expected value or not, if so, executing a sixth step; if not, executing the step seven;
step six: adjusting the driving wind pressure to be small;
step seven: adjusting the driving wind pressure to be larger;
step eight: and outputting the correspondingly adjusted driving wind pressure to the wiper driving device, and returning to the step two.
3. The system for monitoring and self-optimizing wiper oscillation abnormality of motor train unit according to claim 1 or 2, wherein,
the fixed period is 60 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010928172.0A CN112082746A (en) | 2020-09-07 | 2020-09-07 | Motor train unit wiper swing abnormity monitoring and self-optimizing system |
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| CN202010928172.0A CN112082746A (en) | 2020-09-07 | 2020-09-07 | Motor train unit wiper swing abnormity monitoring and self-optimizing system |
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| CN202010928172.0A Pending CN112082746A (en) | 2020-09-07 | 2020-09-07 | Motor train unit wiper swing abnormity monitoring and self-optimizing system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113219267A (en) * | 2021-03-24 | 2021-08-06 | 上海宏英智能科技股份有限公司 | Device and method for monitoring installation tightness of vehicle windscreen wiper |
| US11834007B2 (en) | 2021-07-27 | 2023-12-05 | Cap Corporation | Indicator for wiper blade and wiper blade |
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