CN115468750A - Monitoring method and monitoring system for overturning air cylinder and storage medium - Google Patents
Monitoring method and monitoring system for overturning air cylinder and storage medium Download PDFInfo
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- CN115468750A CN115468750A CN202110563852.1A CN202110563852A CN115468750A CN 115468750 A CN115468750 A CN 115468750A CN 202110563852 A CN202110563852 A CN 202110563852A CN 115468750 A CN115468750 A CN 115468750A
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- 230000007306 turnover Effects 0.000 claims abstract description 70
- 230000000737 periodic effect Effects 0.000 claims abstract description 38
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 230000033001 locomotion Effects 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims description 11
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Abstract
The invention provides a monitoring method and a monitoring system for a turnover cylinder and a storage medium. Firstly, signal wire laying is possible for realizing monitoring, and secondly, the program algorithm judgment of the core is carried out. The monitoring method comprises the following steps: and acquiring internal action periodic signals in real time in the overturning cylinder, and acquiring external action periodic signals in real time outside the overturning cylinder. Comparing the internal action period signal and the external action period signal with a preset cylinder action period value respectively; and calculating a cycle time difference value between the internal action cycle signal and the external action cycle signal in one movement cycle of the turnover cylinder, and comparing the cycle time difference value with a preset time value. And comprehensively judging whether the operation of the turnover cylinder is normal or not according to the comparison result. Running time state monitoring is carried out by developing a functional program of the turnover cylinder, and laying is carried out by combining with an external detection signal, so that various risk hidden dangers are eliminated.
Description
Technical Field
The invention relates to the technical field of cylinder control, in particular to a monitoring method, a monitoring system and a storage medium for a turnover cylinder.
Background
In the machine manufacturing industry, especially in the field of automobile body manufacturing, because a large number of overturning cylinders are required in the process, the automobile body positioning device with a large size waits for the in-place information of the overturning cylinders in the actual work, and the information is subjected to position detection by a signal detection switch of the cylinders, so that the cylinder action of the subsequent step is met. After the turnover air cylinder equipment runs for a long time at a high frequency, if a signal sending part is damaged or an air cylinder connecting rod is loosened, after the turnover air cylinder equipment is broken, a position signal arrives instantly and is asynchronous with the actual turnover air cylinder action, so that the position is not accurately positioned in advance, a control program is executed downwards, the follow-up air cylinder acts in advance, and equipment collision and matching quality accidents are caused.
In view of the above problems, the present inventors have finally obtained the present invention through long-term research and practice.
Disclosure of Invention
Various aspects of the invention provide a monitoring method, a monitoring system and a storage medium for a turnover cylinder, which are used for solving the problem of various risks caused by detection failure of the turnover cylinder.
The technical scheme adopted by the invention is as follows:
in one aspect, a monitoring method for a rollover cylinder is provided, which includes:
s01, acquiring an internal action periodic signal in real time in the overturning cylinder and acquiring an external action periodic signal in real time outside the overturning cylinder;
s02: comparing the internal action period signal and the external action period signal with a preset cylinder action period value respectively;
and S03, judging whether the operation of the turnover cylinder is normal or not according to the comparison result.
Further, step S02 further includes: and calculating a period time difference value between the internal action period signal and the external action period signal in one movement period of the turnover cylinder, and comparing the period time difference value with a preset time value.
Exemplarily, step S03: according to the comparison result, judge whether the operation of upset cylinder is normal, include:
and if the difference value between the internal action period signal and the preset cylinder action period value is within a preset first range, and the difference value between the external action period signal and the preset cylinder action period value is within a preset second range, judging that the operation of the turnover cylinder is normal, otherwise, judging that the operation of the turnover cylinder is abnormal.
Exemplarily, step S03: according to the comparative result, whether the operation of the turnover cylinder is normal is judged, which comprises the following steps:
if the difference value of the internal action period signal and the preset cylinder action period value is within a preset first range, the difference value of the external action period signal and the preset cylinder action period value is within a preset second range, and the difference value of the period time difference value and the preset time value is within a preset third range, judging that the operation of the turnover cylinder is normal, and otherwise, judging that the operation of the turnover cylinder is abnormal.
Preferably, the preset third range is less than 0.1S.
Further, the internal action periodic signal comprises an internal extension periodic signal and an internal return periodic signal, and the external action periodic signal comprises an external extension periodic signal and an external return periodic signal.
In another aspect, a monitoring method for a roll-over cylinder is provided, including:
simultaneously, acquiring internal action periodic signals in real time inside a plurality of turnover cylinders on the automatic line, and acquiring external action periodic signals in real time outside the plurality of turnover cylinders on the automatic line;
and calculating the action period value of each overturning cylinder and the action period average value of all overturning cylinders according to the internal action period signal and the external action period signal, and performing airflow regulation on a single overturning cylinder according to the action period value of each overturning cylinder and the action period average value of all overturning cylinders so as to optimize the production rhythm of the automatic line.
In another aspect, a computer-readable storage medium is provided, on which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the above-mentioned monitoring method of a rollover cylinder.
On the other hand, the monitoring system of the turnover cylinder comprises an action detection device, wherein the action detection device comprises an internal action sensor arranged in the turnover cylinder and used for acquiring an internal action periodic signal of the turnover cylinder in real time;
the action detection device also comprises an external action sensor arranged outside the turnover cylinder and used for acquiring external action periodic signals of the turnover cylinder in real time;
the monitoring system also comprises a control device which is electrically connected or in signal connection with the action detection device and comprises a memory and a processor,
the memory is configured to store a computer program;
the processor is configured to execute the computer program to implement the steps of the rollover cylinder monitoring method described above.
Furthermore, the external motion sensor comprises a first position sensor and a second position sensor, the first position sensor is used for detecting whether the working end of the turnover cylinder reaches the extending working position, and the second position sensor is used for detecting whether the working end of the turnover cylinder reaches the returning working position.
Compared with the prior art, the invention has the beneficial effects that:
the monitoring method and the monitoring device for the turnover cylinder, disclosed by the invention, have the advantages that the running time state monitoring is carried out by developing the functional program of the turnover cylinder and the external detection signal laying is combined, various risk hidden dangers are eliminated, the turnover cylinder is ensured to run stably, the positioning precision is ensured, the cylinder signal comparison is carried out, the generation of waste reporting parts and the collision phenomenon caused by positioning are eliminated, and the station stopping time is greatly reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 shows a schematic flow diagram of a monitoring method according to an embodiment of the invention;
FIG. 2 shows a schematic flow diagram of a monitoring method according to another embodiment of the invention;
fig. 3 shows a schematic flow diagram of a monitoring method according to another embodiment of the invention.
Detailed Description
The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of technical features indicated are in fact significant. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two unless specifically defined otherwise.
The words "if", as used herein may be interpreted as "at \8230; \8230whenor" when 8230; \8230when or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.
It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in articles of commerce or systems including such elements.
In the embodiment of the application, the overturning air cylinder can be applied to the machinery manufacturing industry, is an important part of automobile body positioning equipment in the automobile manufacturing field, is internally provided with an internal action sensor for position detection, and meets the requirement of cylinder action of subsequent steps.
In order to accurately judge the running state of the overturning cylinder and the signal sending component, external signals are laid on the overturning cylinder: and laying an external action sensor, and acquiring whether the air cylinder turns over in real time is an actually arriving position or not and acquiring an external action periodic signal of the turning air cylinder in real time.
In one embodiment, as shown in fig. 1, a monitoring method of a tumble cylinder includes:
s01, acquiring an internal action periodic signal in real time in the overturning cylinder and acquiring an external action periodic signal in real time outside the overturning cylinder;
s02: comparing the internal action period signal and the external action period signal with a preset cylinder action period value respectively;
and S03, judging whether the operation of the turnover air cylinder is normal or not according to the comparison result.
The external signals and the internal signals form a closed loop, the program monitors the action time of the turnover cylinder in real time, the main monitoring parameters are time values from the action output of the cylinder to the arrival of the actual position, the internal action periodic signals comprise internal extending periodic signals and internal returning periodic signals, and the external action periodic signals comprise external extending periodic signals and external returning periodic signals. For example, the time from the first position to the second position (or from the second position to the first position) of the signal in the turnover cylinder is T1, the time from the first position to the second position (or from the second position to the first position) of the externally laid signal is T2, the time T3 from the first position to the second position of the turnover cylinder is measured, the T1 and the T2 are compared with the T3 respectively, whether the running time of the turnover cylinder is normal or not is judged, a fault alarm signal is sent out when the running time is abnormal, and the equipment stops running. Avoid equipment collision and the product matching quality problem that leads to because of the chronogenesis problem.
In one embodiment, as shown in fig. 2, a monitoring method of a tumble cylinder includes:
s01', acquiring internal action periodic signals in real time inside the turnover cylinder and acquiring external action periodic signals in real time outside the turnover cylinder;
s02': comparing the internal action period signal and the external action period signal with a preset cylinder action period value respectively;
s03', judging whether the operation of the turnover cylinder is normal according to the comparison result, wherein the judgment comprises the following steps:
and if the difference value between the internal action period signal and the preset cylinder action period value is within a preset first range, and the difference value between the external action period signal and the preset cylinder action period value is within a preset second range, judging that the operation of the turnover cylinder is normal, otherwise, judging that the operation of the turnover cylinder is abnormal.
In actual work, the time values of the internal action period signal and the external action period signal may be different, and the time values are respectively compared with the preset cylinder action period value, and the judgment is carried out according to the difference range of the internal signal and the external signal and the preset value. For example, during operation, problems arise with the internal signals, and if the internal signals are not monitored in advance, i.e. automatically run to the next manufacturing step, problems with equipment collisions or quality matching can arise.
In one embodiment, as shown in fig. 3, a monitoring method of a tumble cylinder includes:
s01', acquiring an internal action periodic signal in real time inside the overturning cylinder and acquiring an external action periodic signal in real time outside the overturning cylinder;
s02': comparing the internal action period signal and the external action period signal with a preset cylinder action period value respectively; calculating a cycle time difference value between the internal action cycle signal and the external action cycle signal in one motion cycle of the turnover cylinder, and comparing the cycle time difference value with a preset time value;
s03 ", judging whether the operation of the turnover cylinder is normal or not according to the comparison result, wherein the judgment comprises the following steps:
and if the difference value of the internal action period signal and the preset cylinder action period value is within a preset first range, the difference value of the external action period signal and the preset cylinder action period value is within a preset second range, and the difference value of the period time difference value and the preset time value is within a preset third range, judging that the operation of the turnover cylinder is normal, otherwise, judging that the operation of the turnover cylinder is abnormal.
In the experimental situation, the difference of the cycle time between the internal action cycle signal and the external action cycle signal is usually not more than 0.1S, and the actual running state of the cylinder can be determined through respective time, namely whether the phenomena of signal misgeneration and cylinder body damage exist or not. And comparing the cycle time difference between the internal action periodic signal and the external action periodic signal with the set difference by a program to judge whether the running time is normal or not, comprehensively judging by combining the field signal, sending a fault alarm signal when the running time is abnormal, and stopping the running of the equipment. Avoid equipment collision and the product matching quality problem that leads to because of the chronogenesis problem. For example, in the work, the internal signal has a problem, the time difference between the internal signal and the external signal of the cylinder has a problem, and when the internal signal is not monitored in advance, the problem of equipment collision or quality matching can occur when the internal signal is automatically operated to the next manufacturing link. In this case, the time difference can be set to be a small difference, for example, 0.25S, and the judgment is participated in the program, and under the above condition, the equipment reports the error, so that the next link in the manufacturing process is avoided, and the occurrence of accidents is avoided.
In one embodiment, a monitoring method of a tumble cylinder is provided, including:
simultaneously, acquiring internal action periodic signals in real time inside a plurality of turnover cylinders on the automatic line, and acquiring external action periodic signals in real time outside the plurality of turnover cylinders on the automatic line;
and calculating the action period value of each overturning cylinder and the action period average value of all overturning cylinders according to the internal action period signal and the external action period signal, and performing airflow regulation on a single overturning cylinder according to the action period value of each overturning cylinder and the action period average value of all overturning cylinders so as to optimize the production rhythm of the automatic line.
The monitoring method has an auxiliary effect on the beat lifting of an automatic line, determines which air cylinder acts slowly to delay the beat through the acquired time, specifically, namely, a plurality of air cylinders can act simultaneously in the control, the algorithm program outputs the running value and the average value of each air cylinder, and the single air cylinder can be subjected to air flow regulation through the running value, so that the action time is optimized, and the production beat is lifted.
According to a second aspect of the present invention, there is provided a computer readable storage medium having stored thereon a computer program which, when being executed by a processor, carries out the steps of the above-mentioned monitoring method of a rollover cylinder. Therefore, the computer readable storage medium has all the advantages of the monitoring method, and will not be described herein again.
In an embodiment, according to a third aspect of the present invention, there is provided a monitoring system for a rollover cylinder, including a motion detection device and a control device, where the motion detection device includes an internal motion sensor disposed inside the rollover cylinder, and is configured to collect an internal motion period signal of the rollover cylinder in real time; the action detection device also comprises an external action sensor arranged outside the turnover cylinder and used for acquiring external action periodic signals of the turnover cylinder in real time. The control device is electrically or signal-connected with the motion detection device and comprises a memory and a processor, wherein the memory is configured to store a computer program, and the processor is configured to execute the computer program to realize the steps of the monitoring method of the turnover air cylinder. The external action sensor comprises a first position sensor and a second position sensor, the first position sensor is used for detecting whether the working end of the turnover cylinder reaches the extending working position, and the second position sensor is used for detecting whether the working end of the turnover cylinder reaches the returning working position.
The monitoring system of the invention can be matched with cylinder products produced by various large manufacturers at home and abroad. Due to the process design, the loads on each clamping arm of the turnover cylinder are different, and the clamping in-place time of the cylinder is different. The implementation of the scheme mainly comprises the steps of adding outer plate signal laying, and forming closed-loop detection and program algorithm judgment between the detection switch and the air cylinder in a program by installing the air cylinder clamping arm in-place detection switch. Matching according to the tightening in-place time of each overturning cylinder, developing a program block to monitor the running state, carrying out real-time monitoring and recording on the action time of each overturning cylinder by the program block, setting a standard value for the on-off closing time of an on-off switch, wherein the standard value is a time difference value for real-time monitoring of internal and external signals when the cylinder runs, and stopping running when the tightening in-place time of each overturning cylinder exceeds the set standard value. Only in the operation, the actual action is within the allowable difference, the in-place signal can be output, otherwise, the panel gives an alarm, the equipment stops operating immediately, and the collision risk is avoided. Meanwhile, signal verification is carried out by comparing the arrival time of signals inside and outside the air cylinder in a program algorithm, so that the signal problem or the equipment problem can be effectively discriminated, the state of the equipment is early warned in advance, and the application risk of the equipment is eliminated.
The monitoring system of the invention collects data in real time, dynamically collects and outputs the time of the turning cylinder in operation in real time according to the operation logic of the cylinder, averages the same group of operation time and compares the time of internal and external signal pulses in the same direction. The method can be applied to station beat lifting and equipment fault judgment. The method can be applied to all cylinder operation monitoring, particularly to the turnover cylinder with similar positioning effect, different operation time set values are set for different turnover cylinders according to different loads, and comparison and judgment are carried out on the operation time of each dynamic state. And intelligent fault diagnosis, namely laying an external position detection switch to perform closed-loop detection, and comprehensively providing a judgment result of the operation of the turnover cylinder by combining a time monitoring result and a homodromous signal time judgment result. Cost reduction and efficiency improvement are realized, the problems of equipment collision risk and product size matching are avoided, early warning can be carried out on the equipment state, and the hidden danger of direct station halt is avoided.
The foregoing is merely a preferred embodiment of this invention, which is intended to be illustrative, and not limiting. The structures, the connection modes and the like of all the components in the invention can be changed, and the equivalent transformation and improvement on the basis of the technical scheme of the invention are not excluded from the protection scope of the invention.
Claims (10)
1. A method of monitoring a rollover cylinder, comprising:
s01, acquiring an internal action periodic signal in real time in the overturning cylinder and acquiring an external action periodic signal in real time outside the overturning cylinder;
s02: comparing the internal action period signal and the external action period signal with a preset cylinder action period value respectively;
and S03, judging whether the operation of the turnover cylinder is normal or not according to the comparison result.
2. The monitoring method of a roll-over cylinder according to claim 1, wherein the step S02 further comprises: and calculating a period time difference value between the internal action period signal and the external action period signal in one movement period of the turnover cylinder, and comparing the period time difference value with a preset time value.
3. The monitoring method for a rollover cylinder according to claim 1, wherein the step S03: according to the comparison result, judge whether the operation of upset cylinder is normal, include:
and if the difference value of the internal action period signal and the preset cylinder action period value is within a preset first range, and the difference value of the external action period signal and the preset cylinder action period value is within a preset second range, judging that the operation of the turnover cylinder is normal, otherwise, judging that the operation of the turnover cylinder is abnormal.
4. The monitoring method of a roll-over cylinder according to claim 2, wherein the step S03: according to the comparison result, judge whether the operation of upset cylinder is normal, include:
if the difference value of the internal action period signal and the preset cylinder action period value is within a preset first range, the difference value of the external action period signal and the preset cylinder action period value is within a preset second range, and the difference value of the period time difference value and the preset time value is within a preset third range, judging that the operation of the turnover cylinder is normal, and otherwise, judging that the operation of the turnover cylinder is abnormal.
5. A method of monitoring a tilt cylinder according to claim 4, wherein the predetermined third range is less than 0.1S.
6. A method of monitoring a rollover cylinder according to any of claims 1-5, wherein the internal operating cycle signals include internal extend cycle signals and internal return cycle signals, and the external operating cycle signals include external extend cycle signals and external return cycle signals.
7. A method of monitoring a rollover cylinder, comprising:
simultaneously, acquiring internal action periodic signals in real time inside a plurality of turnover cylinders on the automatic line, and acquiring external action periodic signals in real time outside the plurality of turnover cylinders on the automatic line;
and calculating the action period value of each overturning cylinder and the action period average value of all overturning cylinders according to the internal action period signal and the external action period signal, and performing air flow regulation on a single overturning cylinder according to the action period value of each overturning cylinder and the action period average value of all overturning cylinders so as to optimize the production rhythm of the automatic line.
8. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method for monitoring a rollover cylinder as claimed in any of claims 1 to 7.
9. A monitoring system of a turnover cylinder comprises an action detection device, wherein the action detection device comprises an internal action sensor arranged in the turnover cylinder and used for acquiring an internal action periodic signal of the turnover cylinder in real time;
it is characterized in that the preparation method is characterized in that,
the action detection device also comprises an external action sensor arranged outside the turnover cylinder and used for acquiring external action periodic signals of the turnover cylinder in real time;
the monitoring system also comprises a control device which is electrically connected or in signal connection with the action detection device and comprises a memory and a processor,
the memory is configured to store a computer program;
the processor is configured to execute the computer program to carry out the steps of the method of monitoring a rollover cylinder according to any of claims 1 to 7.
10. The monitoring system of the turnover cylinder is characterized in that the external action sensor comprises a first position sensor and a second position sensor, the first position sensor is used for detecting whether the working end of the turnover cylinder reaches an extending working position, and the second position sensor is used for detecting whether the working end of the turnover cylinder reaches a returning working position.
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| CN202110563852.1A CN115468750A (en) | 2021-05-24 | 2021-05-24 | Monitoring method and monitoring system for overturning air cylinder and storage medium |
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| CN202110563852.1A CN115468750A (en) | 2021-05-24 | 2021-05-24 | Monitoring method and monitoring system for overturning air cylinder and storage medium |
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Application publication date: 20221213 |