System for determining fault and / or cause of fault in conveying system
By setting up section control devices, data evaluation controllers and digital twin systems in the conveying equipment, collecting and storing physical parameter data, and using the digital twin system to imitate the status sequence, the fault behavior problems caused by incorrect programming of the conveying equipment are solved, and fast and accurate fault identification and positioning are achieved.
Patent Information
- Application Number
- CN202422156570.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-03
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2034-09-03
AI Technical Summary
Existing conveyor equipment may experience failure behavior when programmed incorrectly, making it difficult to quickly identify the fault or cause of the failure.
A system is designed that collects and stores physical parameter data of the conveying equipment by setting up a section control device, a data evaluation controller and a digital twin system in the conveying equipment, and uses the digital twin system to imitate the state sequence of the conveying equipment, and compares the deviation between the imitation state sequence and the actual state sequence to identify and locate the cause of the fault or failure.
It enables faster and more accurate identification and location of faults or causes of conveyor equipment, improving the efficiency of troubleshooting.
Smart Images
Figure CN223032107U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a system for determining faults and / or causes of faults in a conveying device. Background Art
[0002] As is well known, a conveying device may exhibit faulty behavior due to incorrect programming. Summary of the Utility Model
[0003] Therefore, the object of the utility model is to more easily identify the cause of a fault or faulty behavior in a conveying device.
[0004] According to the utility model, this object is achieved by a system having the following features.
[0005] For a system for determining faults and / or causes of faults in a conveying device, an important feature of the utility model is that the conveying device has a conveying line and a moving device capable of moving along the conveying line,
[0006] wherein a section control device of the conveying device is configured to send driving tasks and permissions to the moving device,
[0007] wherein the section control device is connected to a first network for data exchange,
[0008] wherein a second network is connected to the first network for data exchange,
[0009] wherein a data evaluation controller is configured to collect data and cause the data to be transmitted, in particular, from the data evaluation controller via the first network and the second network to a data memory connected to the second network,
[0010] in particular, such that a state sequence of the system (i.e., the conveying device) is archived and traceable,
[0011] In particular, wherein the state of the system is defined by a tuple of physical parameter values, and wherein the physical parameters include the position, speed, and / or acceleration of the moving device.
[0012] The advantage here is that the data, i.e., the values of the physical parameters measured by the sensors of the conveying device and / or the physical parameters of the actuators of the conveying device, as well as the driving tasks of the moving device, are stored and are thus available for evaluating the data. In this way, the stored data can be transmitted to a digital twin system, and thus the state sequence of the conveying device can be compared with the state sequence simulated in the digital twin system. Therefore, inadmissible large deviations can be identified and attributed to faults, or the cause of the faults can be identified.
[0013] In an advantageous design, the conveying line is divided into sections arranged successively along the conveying line. The advantage here is that the operation of the conveying device can be controlled in a simple manner by issuing driving tasks only in sections, and the mobile device autonomously executes the driving tasks within the section. Only when the corresponding mobile device reaches the end region of the corresponding section does the mobile device report this to the section control device and / or obtain permission to enter the next section along the driving line. In the case of obtaining permission to enter the next section along the driving line, as feedback from the mobile device to the section control device, it is only necessary to indicate the section where the mobile device is located.
[0014] In an advantageous design, the data evaluation controller is set to evaluate the collected data to determine the evaluated results, which are also transmitted to the data memory. The advantage here is that, for example, the speed change curve over time can be determined and stored based on the collected position data.
[0015] In an advantageous design, the third network is connected to the second network for data exchange,
[0016] wherein the master computer, the operating state control device, the service computer, and / or other computers for data exchange are connected to the third network as network users, in particular. The advantage here is that the operation can be monitored and / or preset using a superior computer, in particular the master computer. In addition, not only the conveying device but also the digital twin system can be monitored through this superior computer.
[0017] In an advantageous design, a computer is connected to the second network for data exchange, wherein the computer is set to form a digital twin system of the conveying device, and when the data stored in the data memory is transmitted, the digital twin system mimics the state sequence of the conveying device. The advantage here is that after a failure or malfunction occurs in the conveying device, the stored data, which includes the values of the physical parameters of the conveying device and the driving tasks, can be transmitted to the digital twin system, and then the digital twin system mimics the state sequence. In this way, the cause of the failure or malfunction can be found.
[0018] In an advantageous design, the data memory is implemented in the form of cloud storage. The advantage here is that although the increased risk is acceptable, costs can be saved.
[0019] In an advantageous design, the computer is configured to determine a corresponding state sequence for the respective different acceleration change curves and / or speed change curves over time of any moving device, and perform a corresponding average value calculation to determine the state sequence to be mimicked in the digital twin system. The advantage here is that changes in the mechanical structure of the conveying device, in particular those caused by aging and / or corrosion of its moving device, can be taken into account. Thus, the digital twin system includes not only moving devices with exactly the same acceleration change curves and / or speed change curves mathematically, but also the digital twin system takes into account the deviations of the moving device or other components from the ideal target data.
[0020] In an advantageous design, the computer is configured to determine the state sequence to be mimicked in the digital twin system by:
[0021] - determining a first state sequence for the first acceleration change curve and / or the first speed change curve over time of each moving device,
[0022] - determining a second state sequence for the second acceleration change curve and / or the second speed change curve over time of each moving device,
[0023] The state sequence to be mimicked in the digital twin system is formed as the average value calculated from the first state sequence and the second state sequence. The advantage here is that deviations related to corrosion or aging can be taken into account simply and at low cost.
[0024] In an advantageous design, the first acceleration change curve differs from the second acceleration change curve by a factor, in particular a factor constant over time,
[0025] Or,
[0026] - the first acceleration change curve differs from the target acceleration change curve preset in the driving task by a first factor, in particular a first factor constant over time, and the second acceleration change curve differs from the preset target acceleration change curve by a second factor, in particular a second factor constant over time,
[0027] wherein the second factor is numerically smaller than the first factor,
[0028] In particular, the value of the first factor or the second factor is 1.
[0029] The advantage here is that deviations related to corrosion or aging can be taken into account simply and at low cost.
[0030] In an advantageous design, the computer is configured to monitor whether the deviation between the state sequence simulated in the digital twin system and the state sequence stored in the data memory when the conveying device is in operation exceeds the allowable range, and when the allowable range is exceeded, display and / or issue a corresponding warning. The advantage here is that the cause of the fault or malfunction behavior can be identified.
[0031] For a method for operating a system including a conveying device, an important feature is that a fault or cause of the fault is determined by the deviation between the state sequence simulated in the digital twin system of the conveying device of the system and the state sequence stored in the data memory of the system when the conveying device is in operation exceeding the allowable range. The advantage here is that the cause of the deviation can be identified, and thus the cause of the fault or malfunction behavior can be identified.
[0032] The utility model is not limited to the above-mentioned feature combinations. For those skilled in the art, especially for the purposes proposed and / or by comparison with the prior art, other reasonable combination possibilities of the above-mentioned feature combinations and / or individual features and / or the features to be described below and / or the features of the drawings can be obtained. Description of the Drawings
[0033] The utility model will be described in detail below with reference to the drawings:
[0034] Figure 1 The network structure of the conveying device according to the utility model, in particular the network structure of the transportation system according to the utility model, is schematically shown.
[0035] List of Reference Numerals:
[0036] 1 First Network
[0037] 2 Second Network
[0038] 3 Third Network
[0039] 4 Section Control Device
[0040] 5 Data Evaluation Controller
[0041] 6 Central Control Device
[0042] 7 Master Control Computer
[0043] 8 Operating State Control Device
[0044] 9 Service Computer
[0045] 10 Other Computers Detailed Description of the Preferred Embodiments
[0046] The conveying device has a conveying line along which a mobile device can move. The mobile device exchanges data with network users via a first network 1 in particular. The conveying line is divided into a plurality of sections, and a section control device 4 connected to the first network 1 for data exchange transmits driving commands to the mobile devices located in the corresponding sections and obtains corresponding information from the mobile devices, the information associating the corresponding mobile devices with the sections in which the corresponding mobile devices are located. In particular, the section control device 4 grants permission to the corresponding mobile devices to enter the corresponding, in particular the next adjacent, section.
[0047] In addition, a data evaluation controller 5 and a central control device 6 are both connected to the first network 1. The data evaluation controller 5 collects all the data obtainable from the conveying device and evaluates these data in order to be able to store the data and the results obtained by the evaluation. Information obtained from the actuators and fixedly arranged sensors of the conveying device and information obtained from the mobile devices via the first network 1 are used as data.
[0048] In particular, the data includes the position, speed and / or acceleration of the corresponding mobile device.
[0049] A second network 2 is connected to the first network 1 for data exchange, and the data memory is also directly or indirectly, i.e., via an intermediate arrangement, connected to the second network.
[0050] With the permission of the data evaluation controller 5, the data collected by the data evaluation controller 5 and the results obtained by the evaluation are transmitted from the first network 1 via the second network 2 to the data memory. Thereby, the state sequence of the system, i.e., the conveying device, is archived and traceable.
[0051] In order to be able to store the large amount of generated data safely and efficiently, the data memory can also be implemented as a cloud memory.
[0052] The respective states of the conveying device are characterized by the time-varying curves of the values of the physical parameters of the conveying device, such as the position and / or speed of the mobile device, the sections passed by the corresponding mobile devices, the current driving tasks and the permissions for the mobile devices, the voltage applied to the respective sections, etc.
[0053] A third network 3 is connected to the second network 2 for data exchange, wherein a main control computer 7, an operating state control device 8, a service computer 9 and other computers 10 are connected to the third network 3.
[0054] Therefore, when the conveying device is operating, the mobile device can perform driving tasks, in particular for transporting objects, while storing the state sequence of the conveying device over time. In particular, the time sequence of all driving tasks and the time sequence of other instructions transmitted to the conveying device during operation are also stored.
[0055] For example, if a fault occurs during the operation of the conveying device, the previous state sequence of the conveying device can be reconstructed through tracing, so as to find out the cause of the fault.
[0056] To this end, a so-called digital twin system of the conveying device is created by means of a computer connected to the second network 2, and the digital twin system that digitally simulates / presents the conveying device is transmitted with the same preset values as those transmitted to the conveying device, in particular the same driving tasks and the same permissions. Therefore, the behavior of the digital twin system can be observed under the action of the above preset values, and the cause of the fault can be found.
[0057] However, in a real conveying device, due to mechanical unpredictability such as friction, corrosion, aging, and the weight of the object to be transported, the moving device does not move along an exactly predictable position change curve over time. To take this into account in the digital twin system, the state sequence of the digital twin system is determined for the respective different acceleration change curves and / or speed change curves over time of each moving device, and the corresponding average value calculation is performed to determine the state sequence that can be expected with a high probability.
[0058] In order to determine the expected state sequence with as little computational effort as possible, the first acceleration change curve and the second acceleration change curve are preferably used. For the first acceleration change curve, the acceleration change curve over time is always lower than a preset target acceleration change curve by a first factor, and the second acceleration change curve is equal to the preset target acceleration change curve or higher than the preset target acceleration change curve by a second factor. However, the second factor is numerically smaller than the first factor.
[0059] In another embodiment according to the present invention, the conveying line is designed as a track line and the moving device is guided by the track. In particular, the moving device is designed as a rail vehicle.
Claims
1. A system for determining a fault and / or a cause of a fault in a conveying device, It is characterized in that The conveying equipment has a conveying line and a moving device capable of moving along the conveying line. The section control device of the conveyor system is configured to send travel tasks and permissions to the mobile device. The section control device is connected to the first network for data exchange, The second network is connected to the first network to exchange data, The data evaluation controller is configured to collect data and to transmit the data from the data evaluation controller via the first network and the second network to a data memory connected to the second network, so that a sequence of states of the system is archived and can be traced.
2. The system for determining faults and / or fault causes in a conveying device according to claim 1, It is characterized in that The conveyor line is divided into sections which are arranged successively along the conveyor line.
3. System for determining faults and / or fault causes in a conveying device according to claim 1 or 2, It is characterized in that The third network is connected to the second network for data exchange, The main control computer, the operation status control device and the service computer are connected to the third network as network users.
4. System for determining faults and / or fault causes in a conveying device according to claim 1 or 2, It is characterized in that The computer is connected to the second network for data exchange, and is configured to form a digital twin system of the conveying device.