Temperature monitoring device and method for motor of conveying unit and circulating conveying system

Abstract

The present invention relates to a temperature monitoring device for a motor of a conveying unit of a circulating conveying system, wherein the motor is arranged on the conveying unit and can circulate and / or adjust the height along the supporting beam of the conveying system by means of the motor, and the temperature monitoring device comprises: a data acquisition module, which is arranged on the upper side of the supporting beam and comprises an image recognition device and an infrared measurement device, which are respectively used to take images of the conveying unit and / or its motor passing by and to recognize the numbers related to the motor in the image and to infrared measure the temperature of the motor passing thereunder; a data transmission module transmits data in association with the recognized numbers and the measured temperature; and a data processing module processes the transmitted data and outputs a temperature monitoring signal. In addition, the present invention also relates to a temperature monitoring method for a motor of a conveying unit of a circulating conveying system and a circulating conveying system.

Description

Technical Field

[0001] The invention relates to a temperature monitoring device for a motor of a conveying unit of a circulating conveying system, a temperature monitoring method for a motor of a conveying unit of a circulating conveying system and a circulating conveying system. Background Art

[0002] In vehicle manufacturing, a circulating conveyor system is usually used, the main function of which is to hoist and convey vehicle bodies using conveyor units for further processing and assembly of parts. One or more motors are installed to enable the conveyor unit to move along the support beam of the conveyor system and adjust the height of the hoisted vehicle body when necessary. Here, the one or more motors move along the support beam of the conveyor system with the conveyor unit, so they are called mobile motors. In order to ensure the safe and stable operation of these motors, their temperature needs to be monitored.

[0003] In the prior art, the method for measuring the motor temperature of the conveying unit is to attach a temperature sensor to each motor. When the motor passes a fixed position where a reading device is installed, the reading device reads the motor temperature measured by the temperature sensor in a non-contact manner.

[0004] Such a temperature measurement method has many drawbacks: first, the entire conveying system involves a large number of motors. These motors circulate along the support beams, and it is difficult to connect the temperature sensors through traditional wiring. Installing a temperature sensor for each motor will significantly increase the cost, thus limiting its large-scale promotion; second, the working power supply of the temperature sensor installed on the motor is usually a battery. When the battery is low or the battery life expires, it is inevitable to replace the battery or sensor, which causes additional maintenance costs and undesirable downtime; third, each temperature sensor attached to the motor needs to be written with a number in advance, and when the motor or temperature sensor is replaced, the number information may also need to be rewritten, which causes a huge workload when the number of replacements is large, and it is not convenient for real-time maintenance. Summary of the invention

[0005] In order to provide a cost-saving and maintenance-friendly motor temperature monitoring, the present invention proposes a temperature monitoring device for a motor of a conveying unit of a circulating conveying system, a temperature monitoring method for a conveying unit of a circulating conveying system, and a circulating conveying system.

[0006] The temperature monitoring device of the motor of the conveying unit of the cyclic conveying system according to the present invention comprises a data acquisition module, a data transmission module and a data processing module, wherein the data acquisition module is connected to the data processing module via the data transmission module, the motor is arranged on the conveying unit, and the conveying unit can circulate and / or adjust the height along the supporting beam of the conveying system by means of the motor, wherein:

[0007] The data acquisition module is arranged on the upper side of the support beam and comprises:

[0008] an image recognition device for capturing images of the conveyor unit and / or its motor passing by and for identifying the numbers associated with the motor in the image, and

[0009] Infrared measuring device, used for infrared measuring the temperature of the motor passing thereunder;

[0010] The data transmission module transmits data by associating the identified number with the measured temperature;

[0011] The data processing module processes the transmitted data and outputs a temperature monitoring signal.

[0012] According to the present invention, the motor is arranged on the conveying unit, and the conveying unit can be circulated and / or adjusted in height along the support beam of the conveying system by means of the motor, and the motor moves together with the conveying unit for lifting the vehicle body. Each conveying unit is equipped with one or more motors. For example, a conveying unit for lifting a vehicle body can have two motors for traveling and three motors for adjusting the height of the lifted vehicle body. These multiple motors assigned to a conveying unit are arranged in sequence along the support beam.

[0013] According to the present invention, the image recognition device collects the motor number and / or the conveying unit number from the upper side of the support beam. Here, the number can be not only the motor number, but also the conveying unit number, and can be both. Since the front and back order of the motors assigned to a conveying unit is known, when the conveying unit number is identified, the motors can also be distinguished from each other. According to the present invention, image recognition is used to obtain the number. Specifically, an image of a position with a corresponding number can be taken and the image can be processed, for example, converted into a grayscale image and features therein, such as lines, corners, arcs, etc., are extracted and compared with stored number examples to determine the number in the image.

[0014] According to the present invention, the infrared measuring device measures the temperature of the motor in a non-contact manner. Here, the motor can be measured in a single point or multiple points in its entirety or in part to obtain its temperature value. Here, the temperature of the motor is measured in a non-contact manner, thereby eliminating the need to provide each motor with its own sensor for temperature measurement.

[0015] According to the present invention, after obtaining the serial number related to the motor and the temperature of the motor, the data transmission module transmits the above two data obtained by the data acquisition module to the data processing module through industrial Ethernet (PROFIBUS, PROFINET, Modbus), serial port (RS232, RS485) or wireless network (WiFi, RFID) in association with each other. Thus, the measured temperature can correspond to a single motor one by one, which is convenient for further data processing, storage and output.

[0016] According to the present invention, the data processing module processes the transmitted data and outputs a temperature monitoring signal. Here, the data involved may include not only the identified number and the measured temperature, but also other parameters: such as time and date, air temperature and humidity, operating time, production rhythm, etc.; and / or other data detected on the motor, such as the thermal imaging pictures described below. According to the present invention, the temperature monitoring signal can be output on the display, for example, by displaying the temperature of each motor with a color icon, which is convenient for the operator to observe. In addition, the temperature monitoring signal can also be output to the control device of the conveying system so that the conveying system can adjust the operation of the conveying unit according to the signal.

[0017] The temperature monitoring device according to the present invention can collect the serial number related to the motor without contact, and also measure the temperature of the motor without contact. Therefore, first of all, there is no need to modify the motor according to the prior art, that is, it is possible to save the need to set up sensors for each motor. In a modern large-scale vehicle manufacturing line, 2000 to 3000 motors may be running at the same time. As a result, the labor cost and material cost of installing sensors one by one are greatly saved. Secondly, since such sensors are eliminated, the process of numbering these sensors is no longer required. Moreover, since such sensors are not required, there is no need to maintain these sensors, such as replacing batteries and the resulting renumbering. Therefore, in order to monitor all motors on the assembly line, no additional downtime will be caused, production efficiency will be improved, and special manpower will be saved.

[0018] In addition, the present invention does not need to be powered by a battery, and can avoid measurement errors caused by low battery power, as well as measurement failures and / or data loss caused by battery exhaustion. In addition, the present invention does not need to set up a reading device in the prior art, thereby avoiding reading errors on the reading device. In particular, it can also avoid interference of radio frequency during the reading process with other devices on the assembly line.

[0019] In particular, one or more temperature monitoring devices can be arranged on a conveying system, and the number of temperature monitoring devices can be much lower than the number of motors. Therefore, it can be said that according to the present invention, decentralized temperature measurement can be innovatively performed with a centralized device.

[0020] According to one embodiment of the present invention, the data acquisition module includes a trigger sensor, by which the passage of the motor is detected. In this way, the various modules of the temperature measurement device according to the present invention are activated only when the motor passes by, so that image recognition and infrared measurement do not have to be performed all the time. This can reduce the amount of calculation of the image processor.

[0021] According to one embodiment of the present invention, the data processing module can filter, compare, store, analyze, predict, output and alarm the measured temperature. To this end, the data processing module can include filtering devices, comparison devices, storage devices, analysis devices, prediction devices, output devices and alarm devices, etc. Here, for example, filtering is performed for erroneous and / or abnormal measurement values ​​to increase the robustness of the entire temperature monitoring. The measured motor can be compared with a preset threshold value to find the running fault of the motor. For example, when the measured temperature is higher than the threshold, the motor fault is determined, and targeted measures can be taken for this, such as alarming the operator and / or stopping the operation of the faulty motor. The measured motor temperature can also be stored, for example, the data storage depth can be 7 days, so that the operator can track the motor at any time and can consult historical data for analysis and judgment, so as to comprehensively manage all motors. In addition, the measured temperature can be analyzed, such as longitudinally comparing the temperatures of all motors, screening the temperatures of all motors used for walking, screening the temperatures of motors used for adjusting height, and retrieving the historical changes of a single motor. In particular, a motor health file can also be established through the historical changes of the single motor, so as to predict the failure and life of the motor. In particular, an automatic alarm is issued when an early warning or fault occurs. According to the temperature data of the motor, it is preferred to provide an audible and visual alarm on the monitoring interface and automatically send the fault information to the operator, especially the responsible person, by email or short message through the information release function to facilitate remote dispatch and command.

[0022] According to one embodiment of the present invention, the infrared measuring device is a thermal imaging device, or the data acquisition module additionally includes a thermal imaging device, and the thermal imaging device can take thermal imaging pictures of the motor. It is particularly advantageous that the infrared measuring device is a thermal imaging device. Thermal imaging technology refers to the use of an infrared detector and an optical imaging objective lens to receive the infrared radiation energy distribution diagram of the measured target radiated to the photosensitive element of the infrared detector, thereby obtaining an infrared thermal imaging picture, and this external thermal imaging picture corresponds to the heat distribution field on the surface of the object. It can be said that collecting thermal imaging pictures is also a kind of infrared measurement. Thermal imaging pictures are particularly preferred for monitoring the temperature of the motor because they can reflect the temperature distribution of the entire motor and provide personnel with an overview of the temperature of the motor. In particular, by analyzing the thermal imaging pictures, the temperature data of the motor, such as the average temperature, the highest temperature, the lowest temperature, the temperature gradient, etc., can be obtained. Abnormal temperature areas can also be found through the collected thermal imaging pictures, and local faults of the motor can be determined through the abnormal temperature areas. For example, some stator windings can be short-circuited or short-circuited by abnormal temperature areas (too high or too low) on the motor body shell. Excessive temperature on the motor shaft can determine that the bearing is severely worn. Abnormal temperature in the motor control circuit may indicate that some components in the circuit are damaged or there is a short circuit in the circuit.

[0023] According to one embodiment of the present invention, the data processing module identifies the number associated with the motor and measures the temperature of the motor through the thermal imaging picture. Usually, the number on the motor or the conveying unit is set with different materials, such as paint applied thereon, metal or plastic plates attached thereon. It is particularly preferred that the motor or the conveying unit is provided with a number made of a material with a different thermal conductivity from the surrounding material. As a result, these numbers will be shown at a temperature different from the surrounding background in the collected thermal imaging picture. At the same time, as described above, the temperature data of the motor can be obtained by analyzing the thermal imaging picture. Therefore, only one thermal imaging picture of the motor needs to be collected to analyze and obtain the number associated with the motor and the temperature of the motor. This simplifies data collection and streamlines the processing steps, avoiding errors in data association. Therefore, in particular, the thermal imaging picture that fully reflects the temperature distribution also has a symbolic number, so that the collected raw data itself is associated with the corresponding motor.

[0024] On the other hand, according to the circulating conveying system of the present invention, comprising:

[0025] - supporting beams;

[0026] - a plurality of conveying units moving on the support beam, each of which is provided with a motor, by means of which the conveying units can be circulated along the support beam of the conveying system and / or adjusted in height;

[0027] - a temperature monitoring device according to the invention for an electric motor of a conveyor unit of a circulating conveyor system; and

[0028] - A control device for actuating the electric motor of the conveying unit.

[0029] According to one embodiment of the present invention, a plurality of temperature monitoring devices are evenly distributed on the path defined by the support beam. In this way, the motor temperature can be monitored more intensively, and the real-time performance of the motor temperature data can be improved. In addition, the temperature monitoring device can be set at the process position that is critical to production or sensitive to the motor temperature, so as to timely discover potential faults.

[0030] According to one embodiment of the present invention, a number is provided on the motor or the conveying unit, and the number is made of a material with a different thermal conductivity from the surrounding material. Such a number will be shown in the collected thermal imaging picture at a temperature different from its surrounding background. Therefore, in the case where the data acquisition module includes a thermal imaging device, the number related to the motor and the temperature of the motor can be analyzed and obtained only by a thermal imaging device. This simplifies the structure of the temperature monitoring device and avoids errors in data association. In particular, the thermal imaging picture collected by the thermal imaging device can fully reflect the temperature distribution and also has a symbolic number, so that the collected raw data itself carries the corresponding motor and / or conveying unit number information.

[0031] According to one embodiment of the present invention, the motor is controlled according to the temperature monitoring signal of the temperature monitoring device. For example, when the temperature of the motor is too high, its operating power is reduced so that it can be effectively cooled. In this way, based on the measured temperature data of the motor, the motor and the conveying unit can be controlled in a targeted manner to avoid damage to the motor caused by overheating, effectively ensure operational safety, improve the health of the motor operation, and extend its service life.

[0032] According to one embodiment of the present invention, when the motor temperature measured or predicted by the temperature monitoring device is higher than a critical value, the conveying system drives the transport unit equipped with the motor to the maintenance fork of the support beam and stops the operation. Here, the maintenance fork is branched on the support beam, and the transport unit moving on the support beam can be guided to the maintenance fork through the switch. In this way, the transport unit whose motor temperature is too high or about to be too high can be moved out of the operating route defined by the support beam, so that the failure of a single transport unit and / or motor will not affect the entire production, and no downtime due to motor overheating will occur.

[0033] The functions, effects and advantages of the circulating conveying system according to the present invention can be found in the above description of the temperature monitoring device.

[0034] On the other hand, the temperature monitoring method of the motor of the conveying unit of the circulating conveying system according to the present invention comprises:

[0035] - Image recognition of the number associated with the motor from the upper side of the support beam;

[0036] - infrared measurement of the temperature of the motor from the upper side of the support beam;

[0037] - Transmitting the identified number and the measured temperature in association with each other;

[0038] - Process the transmitted data and output a temperature monitoring signal.

[0039] According to the present invention, the serial number associated with the motor is image-recognized from the upper side of the support beam. In the image recognition, the captured image can be processed, for example, converted into a grayscale image and features therein, such as lines, corners, arcs, etc., are extracted and compared with stored serial number examples to recognize the serial number in the image.

[0040] According to the invention, the temperature of the motor is measured infraredly from the upper side of the support beam. Here, the temperature of the motor is measured in a contactless manner, thereby eliminating the need to provide each motor with its own sensor for temperature measurement.

[0041] It should be noted that the present invention does not limit the execution order of the above two method steps. The number associated with the motor can be image recognized first, and then the temperature of the motor can be measured by infrared, or it can be performed in the opposite order, that is, the temperature of the motor can be measured by infrared first, and then the number associated with the motor can be image recognized. Preferably, these two method steps are performed simultaneously, in particular in the same step. In addition, image recognition and infrared measurement from the upper side of the support beam will not hinder the movement of the conveying unit and will not affect the operation of the motor.

[0042] According to the present invention, the identified serial number and the measured temperature are correlated with each other for data transmission, so that the measured temperature can correspond to a single motor one by one, which is convenient for further data processing, storage and output.

[0043] According to the present invention, the transmitted data is processed and a temperature monitoring signal is output. Here, the data involved may include not only the identified number and the measured temperature, but also other parameters, such as time and date, air temperature and humidity, operating time, production rhythm, etc.; and / or other data detected on the motor, such as the thermal imaging pictures described below. According to the present invention, the temperature monitoring signal can be output on a display, for example, by displaying the temperature of each motor with a color icon, which is convenient for the operator to observe. In addition, the temperature monitoring signal can also be output to the control device of the conveying system so that the conveying system can adjust the operation of the conveying unit according to the signal.

[0044] By using the temperature monitoring method of the present invention, the serial number associated with the motor can be collected contactlessly, and the temperature of the motor can also be measured contactlessly. In particular, it is unnecessary to set up a sensor for each motor. This greatly simplifies the existing temperature measuring device and greatly saves the labor and material costs of installing sensors one by one. Secondly, since such sensors are eliminated, there is no need for the process of numbering these sensors. Moreover, there is no need to maintain these sensors, such as replacing batteries and the resulting renumbering. Therefore, in order to monitor all the motors on the assembly line, it is only necessary to set up at least a data acquisition module on the support beam and connect the data transmission module and the data processing module accordingly, without causing additional downtime, improving production efficiency, and saving special manpower.

[0045] In addition, the temperature monitoring device according to the present invention does not need to be powered by a battery, which can avoid measurement errors caused by low battery power, as well as measurement failures and / or data loss caused by battery exhaustion. In addition, the present invention does not need to set up a reading device in the prior art, thereby avoiding reading errors on the reading device. In particular, it can also avoid interference with other devices on the pipeline during the reading process.

[0046] According to an embodiment of the present invention, the method further comprises: detecting the passing of the motor by triggering a sensor; and starting each method step when the passing of the motor is detected. Each of the above method steps can be triggered by the triggering sensor, thereby reducing the amount of calculation of the image processor.

[0047] According to one embodiment of the present invention, the processing of the transmitted data includes: at least one of filtering, comparing, storing, analyzing, predicting, outputting and alarming the measured temperature.

[0048] According to one embodiment of the present invention, the method further comprises collecting a thermal imaging picture of the motor.

[0049] According to an embodiment of the present invention, the serial number associated with the motor is identified through the thermal imaging image and the temperature of the motor is measured.

[0050] The function, effects and advantages of the temperature monitoring method according to the invention for an electric motor of a conveyor unit of a continuous conveyor system can be found in the above description of the temperature monitoring device and the continuous conveyor system. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 The present invention shows the temperature measurement of the motor in the vehicle manufacturing line in the prior art;

[0052] Figure 2 The arrangement of the temperature monitoring device according to the present invention in the conveying system is shown;

[0053] Figure 3 A module diagram of a temperature monitoring device according to the present invention is shown;

[0054] Figure 4 A flow chart showing a method for monitoring motor temperature according to the present invention is shown;

[0055] Figure 5 A graph showing the real-time temperature of all conveyor unit motors;

[0056] Figure 6 Shows the temperature-time curve of a single conveyor unit motor;

[0057] Figure 7 A thermal image showing the motor; and

[0058] Figure 8 A preferred numbering form according to the present invention is shown. DETAILED DESCRIPTION

[0059] Figure 1 The figure shows a temperature measurement of a motor 1 in a vehicle manufacturing line, i.e., a conveying system, in the prior art. The motor 1 is used to drive a conveying unit, not shown in detail, to move on a support beam 3 of the conveying system and / or to adjust the height of the conveying unit. In the view shown, a plurality of conveying units 001 to 101 on the support beam 3 are each equipped with a motor 1, which is used to move the corresponding conveying unit along a forward direction 4. A temperature sensor 2 represented by a shadow is attached to each motor 1. When the motor passes a fixed position where a reading device 5 is installed, the reading device 5 reads the motor temperature measured by the temperature sensor 1 in a non-contact manner. In temperature measurement according to the prior art, it is inevitable to install temperature sensors 2 for a large number of motors. Since the temperature sensor 2 needs to be powered separately and uniquely numbered, additional costs are incurred.

[0060] Figure 2The figure shows the arrangement of the temperature monitoring device according to the present invention in a circulating conveying system. Figure 1 Similarly, the transport unit 7 with the vehicle 9 hoisted thereon moves on the support beam 3 along the advancing direction 4. Figure 2 It can be seen in the figure that each conveying unit 7 is equipped with two motors 1 oriented in the forward direction of the fuselage, and the two motors 1 are arranged one after another on the support beam 3 and powered by the busbar on the support beam 3. Not limited to this, the motor 1 can be arranged on the side of the support beam or even below it or at other positions of the transport unit.

[0061] Figure 2 Schematically shown in FIG. 1 , the data acquisition module 6 in the temperature monitoring device according to the present invention is arranged on the upper side of the motor 1 , so that when the conveying unit moves, the motor 1 will pass under the data acquisition module 6 in sequence.

[0062] also, Figure 2 The conveying unit number 8 is shown. It should be noted that the conveying unit number is only schematic and is not shown to scale. It should be arranged at any position of the conveying unit that can be detected by the data acquisition module 6, especially oriented to face upward. Since the order of the motors is fixed, the two motors in the conveying unit 001, such as motors 00_1 and 001_2, can be uniquely marked when the conveying unit number is known. In addition to the conveying unit number 8, a motor number can also be set for the motor alternatively or alternatively. Similarly, the motor number should also be arranged at any position of the conveying unit that can be detected by the data acquisition module 6, especially oriented to face upward.

[0063] from Figure 2 The basic structure of the circulating conveying system according to the present invention can also be obtained from FIG. The circulating conveying system comprises:

[0064] - Support beam 3;

[0065] - a plurality of conveying units 7 moving on the support beam, each of which is provided with a motor 1, by means of which the conveying units 7 can be circulated along the support beam 3 of the conveying system and / or adjusted in height;

[0066] - a temperature monitoring device for the motor 1 of the conveying unit 7 of the above-mentioned circulating conveying system; and

[0067] A control device for actuating the electric motor 1 of the conveying unit 7 .

[0068] Figure 3The module diagram of the temperature monitoring device 10 according to the present invention is shown. The temperature monitoring device 10 includes: a data acquisition module 6, a data transmission module 13 and a data processing module 14, wherein the data acquisition module 6 is connected to the data processing module 14 through the data transmission module 13, wherein the data transmission module 13 transmits data in association with the identified number and the measured temperature, and the data processing module 14 processes the transmitted data and outputs a temperature monitoring signal, and the data acquisition module 6 includes: an image recognition device 11, which is used to capture an image of the conveying unit and / or its motor passing by and recognize the number related to the motor 1 in the image, especially the conveying unit number 8 and / or the motor number, and an infrared measurement device 12, which is used to infrared measure the temperature of the motor 1 passing thereunder.

[0069] Advantageously, the data acquisition module 6 may also include a trigger sensor, through which the motor is detected to pass, thereby triggering the corresponding image recognition and infrared measurement. Advantageously, the data processing module 14 is capable of filtering, comparing, storing, analyzing, predicting, outputting and alarming the measured temperature. To this end, the data processing module 14 may include corresponding filtering devices, comparing devices, storing devices, analyzing devices, predicting devices, output devices and alarm devices, etc.

[0070] Figure 4 A flow chart of a method 100 for monitoring the temperature of a motor according to the present invention is shown. The method 100 comprises:

[0071] - Step 101: Image recognition of the serial number associated with the motor 1 from the upper side of the support beam;

[0072] - Step 102: perform infrared measurement of the temperature of the motor 1 from the upper side of the support beam;

[0073] - Step 103: Transmitting data by associating the identified number with the measured temperature;

[0074] - Step 104: Process the transmitted data and output a temperature monitoring signal.

[0075] Here, step 101 and step 102 can also be performed in reverse order. Preferably, these two method steps are performed simultaneously, in particular, they can also be implemented in the same step, which will be described in detail below.

[0076] Figure 5 A graph showing the real-time temperature of all conveyor unit motors 1 in a vehicle manufacturing line. The graph shows the temperatures of 77 motors 1 running in the conveyor system in total. The temperature is the most recently measured temperature of the corresponding motor 1 when it last passed through the data acquisition module 6. Therefore, it can be said that these temperature data are approximately real-time. Figure 5The figure also shows the minimum threshold MIN and the maximum threshold MAX. It can be seen from the figure that the motor No. 092_2 exceeds the maximum threshold MAX. Based on this, an alarm can be issued to the operator and the control device of the conveying system by outputting a temperature monitoring signal.

[0077] Figure 6 The temperature time curve of a single conveyor unit motor is shown. Figure 6 The temperature change of one of the motors of a single conveying unit within a time range of nearly 12 hours is shown. It can be seen from the figure that the temperature of the motor basically fluctuates around 33°C. Figure 6 The minimum threshold MIN and the maximum threshold MAX are also shown in FIG. At 4:55:45 PM, the temperature of the motor exceeds the maximum threshold MAX. Based on this, an alarm can be issued to the operator and the control device of the conveying system by outputting a temperature monitoring signal.

[0078] Figure 7 A thermal imaging picture of the motor is shown. The thermal imaging picture is collected by an optional thermal imaging device of the data acquisition module 6. Thermal imaging pictures are particularly preferred for monitoring the temperature of the motor, because they can reflect the temperature distribution of the entire motor and provide personnel with an overview of the temperature of the motor. Figure 7 The grayscale in the figure represents different temperature ranges. It should be noted that different colors are more commonly used to represent different temperature ranges in general applications. The temperature data of the motor 1 can be obtained by analyzing the thermal imaging pictures, such as the highest temperature of 52.5°C and the lowest temperature of 23.8°C. It is also possible to find abnormal temperature areas through the collected thermal imaging pictures, and determine the local fault of the motor through the abnormal temperature areas.

[0079] Figure 8 A preferred form of numbering according to the present invention is shown. The numbering is formed in the form of a number plate and can be mounted, in particular attached, on a motor or a conveying unit. The number plate comprises a numbering portion 15 and a base portion 16. The numbering portion 15 is made of a material having a different thermal conductivity from the surrounding material, i.e., the collective portion 16. As a result, these numbered portions will be shown at a temperature different from their surrounding background in the acquired thermal imaging picture.

[0080] By installing such a number plate on the conveying unit 7 or the motor 1, the number of the conveying unit 7 or the motor 1 can be obtained by simply analyzing the thermal imaging picture. At the same time, the temperature and distribution of the motor 1 can also be obtained based on the thermal imaging picture. This simplifies data collection and streamlines processing steps, avoiding errors in data association. In particular, it can be achieved that the thermal imaging picture that fully reflects the temperature distribution also has a symbolic number, so that the collected raw data can be associated with a single motor.

[0081] The present invention is not limited to the embodiments shown, but includes or extends to all technical equivalents that may fall within the effective scope of the appended claims. The position descriptions selected in the specification, such as top, bottom, left, right, etc., refer to the direct description and the drawings shown and can be transferred to the new position according to the meaning when the position changes.

[0082] The features disclosed in this application document can be implemented not only individually but also in any combination. It should be noted that the various drawings of the present invention are schematic and may not be shown to scale. In various embodiments, the number, construction form and / or arrangement structure of the conveying unit, motor, and data acquisition module are not limited to the examples shown. The values ​​listed in the specification are only reference values, and can be exceeded or lower than the reference values ​​when the dimensions are appropriately selected.

Claims

1. A temperature monitoring device for a motor of a conveying unit of a circulating conveying system, wherein: The motors are respectively arranged on a plurality of conveying units, and the conveying units can circulate and / or adjust the height along the supporting beam of the conveying system by means of the motors. The temperature monitoring device includes a data acquisition module, a data transmission module and a data processing module. The data acquisition module is connected to the data processing module through the data transmission module, wherein: The data acquisition module is arranged on the upper side of the support beam and comprises: an image recognition device for capturing images of the conveyor unit and / or its motor passing by and for identifying the numbers associated with the motor in the image, and Infrared measuring device, used for infrared measuring the temperature of the motor passing thereunder; The data transmission module transmits data by associating the identified number with the measured temperature; The data processing module processes the transmitted data and outputs a temperature monitoring signal.

2. The temperature monitoring device according to claim 1, characterized in that: The data acquisition module includes a trigger sensor, through which the passage of the motor is detected.

3. The temperature monitoring device according to claim 1 or 2, characterized in that: The data processing module can perform at least one of filtering, comparing, storing, analyzing, predicting, outputting and alarming on the measured temperature.

4. The temperature monitoring device according to claim 1 or 2, characterized in that: The infrared measuring device is a thermal imaging device, or the data acquisition module additionally includes a thermal imaging device, and the thermal imaging device can take thermal imaging pictures of the motor.

5. The temperature monitoring device according to claim 4, characterized in that: The data processing module identifies the serial number associated with the motor through the thermal imaging picture and measures the temperature of the motor.

6. Circulating conveying system, including: Support beams; A plurality of conveying units moving on the support beam, each of which is provided with a motor, by means of which the conveying units can be circulated and / or adjusted in height along the support beam of the conveying system; The temperature monitoring device for the motor of the conveying unit of a circulating conveying system according to any one of claims 1 to 5; as well as A control device for actuating the electric motor of the conveying unit.

7. The circulating conveying system according to claim 6, characterized in that: A plurality of temperature monitoring devices are evenly distributed on a path defined by the support beam.

8. The circulating conveying system according to claim 6 or 7, characterized in that: A number is provided on the motor or the conveying unit, which number is made of a material having a different thermal conductivity than the surrounding material.

9. The circulating conveying system according to claim 6 or 7, characterized in that: The electric machine is controlled as a function of a temperature monitoring signal from a temperature monitoring device.

10. The circulating conveying system according to claim 9, characterized in that: When the temperature of the motor measured or predicted by the temperature monitoring device is higher than a critical value, the conveying system drives the transport unit provided with the motor to a maintenance turnout of the support beam and stops it.

11. A method for monitoring the temperature of a motor of a conveying unit of a circulating conveying system, wherein: The motors are respectively arranged on a plurality of conveying units, and the conveying units can circulate and / or adjust their heights along a support beam of a conveying system by means of the motors. The method comprises: Perform image recognition of the serial number associated with the motor from the upper side of the support beam; Taking infrared measurements of the temperature of the motor from the upper side of the support beam; Transmitting data by associating the identified number with the measured temperature; The transmitted data is processed and a temperature monitoring signal is output.

12. The temperature monitoring method according to claim 11, characterized in that: The passing of the motor is detected by triggering the sensor; and each method step is initiated when the passing of the motor is detected.

13. The temperature monitoring method according to claim 11 or 12, characterized in that: The processing of the transmitted data includes: filtering, comparing, storing, analyzing, predicting, outputting and alarming the measured temperature.

14. The temperature monitoring method according to claim 11 or 12, characterized in that: Collect thermal imaging pictures of the motor.

15. The temperature monitoring method according to claim 14, characterized in that: The serial number associated with the motor is identified through the thermal imaging picture and the temperature of the motor is measured.

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