Communication power supply method and device for overhead crane, overhead crane, electronic equipment and storage medium

Abstract

The present invention provides a communication power supply method and device for an overhead crane, an overhead crane, an electronic device and a storage medium, and belongs to the technical field of overhead crane power supply. The communication power supply method for an overhead crane of the present invention processes a first electrical signal of a target overhead crane through a mixer when the frequency of the first electrical signal is relatively large, so as to obtain a target difference frequency signal with a relatively low frequency, and further filters out a frequency band that may interfere with the communication of the overhead crane through a bandpass filter, so that the overhead crane can communicate in a relatively suitable frequency band without interference, thereby ensuring the normal communication and operation of the overhead crane.

Description

Technical Field

[0001] The present invention relates to the technical field of overhead crane power supply, and in particular to an overhead crane communication power supply method, an overhead crane, an electronic device and a storage medium. Background Art

[0002] With the development of semiconductor technology, the size of wafers has increased from 150mm and 200mm to 300mm, and the weight has also increased from 3kg and 5kg to 9kg. The traditional manual material handling method can no longer meet production needs. The semiconductor manufacturing process is complex and precise, requiring an efficient and stable material handling system to ensure equipment efficiency and product yield, which directly affects the cost competitiveness of the enterprise. Therefore, the automatic material handling system (AMHS) came into being to replace manual material handling.

[0003] The AMHS system has the advantages of improving production efficiency, reducing manual errors, improving environmental cleanliness and reducing vibration, which helps to improve product yield and is widely used in semiconductor, panel, solar energy and other industries. AMHS consists of a variety of equipment, including the core equipment material handling overhead crane (OHT) and auxiliary equipment such as automatic guided vehicles (AGV), rail guided vehicles (RGV) and conveyor belts, which together constitute an efficient material transmission system. In addition, AMHS also includes storage equipment such as Stocker, UTS, NTB, etc., which further improve the flexibility and capacity of the system.

[0004] The material handling crane moves along the track and transfers the workpiece container to the material transfer platform. In order to provide power for the AMHS, modern wafer fabs generally use non-contact power supply systems (IPT). IPT transmits power through the coupling of the power pick-up on the OHT and the Litz wire on the track. The principle is similar to that of a traditional transformer, which uses magnetic field coupling to achieve power transmission. However, the frequency of the Litz wire is too high, and the crane uses the same frequency as the Litz wire for communication, which will be interfered by the power pick-up signal. That is, high-frequency signals will interfere with the communication system of the crane, especially in the absence of good shielding or isolation, electromagnetic interference will affect the communication signals received and sent by the crane. Summary of the invention

[0005] The present invention provides a communication power supply method and device for an overhead crane, an overhead crane, an electronic device and a storage medium, which are used to solve the defect that communication signals in the prior art are easily interfered with, and achieve the effect that the overhead crane can communicate in a more suitable frequency band without being interfered with.

[0006] The present invention provides a communication power supply method for an overhead crane, comprising:

[0007] In the case where the target overhead travelling vehicle obtains the first electrical signal for power supply, determining a first frequency of the first electrical signal;

[0008] When the first frequency is greater than a frequency threshold, inputting the first electrical signal into a mixer;

[0009] The first electrical signal is mixed with a target local oscillator signal by a mixer to generate a target sum frequency signal and a target difference frequency signal; the frequency of the target local oscillator signal is less than the first frequency, and the frequency of the local oscillator signal is determined based on the first frequency and the frequency of electromagnetic radiation generated by the target overhead travelling vehicle operating at the first frequency;

[0010] Based on the first frequency and the frequency of electromagnetic radiation generated by the target overhead travelling vehicle operating at the first frequency, filtering the target difference frequency signal through at least two bandpass filters to obtain a second electrical signal;

[0011] The second electrical signal is determined as a communication power supply signal of the target overhead travelling vehicle.

[0012] According to a communication power supply method for an overhead traveling vehicle provided by the present invention, the first electrical signal is mixed with a target local oscillator signal by a mixer to generate a target sum frequency signal and a target difference frequency signal, comprising:

[0013] Inputting the first electrical signal and the target local oscillator signal into corresponding ports of the mixer;

[0014] The first electrical signal is mixed with the target local oscillator signal by generating an intermodulation effect through a nonlinear element in the radio frequency integrated circuit of the mixer;

[0015] The first electrical signal and the target local oscillator signal are summed to obtain the target sum frequency signal, and the first electrical signal and the target local oscillator signal are subtracted to obtain the target difference frequency signal.

[0016] According to a communication power supply method for an overhead crane provided by the present invention, the frequency of the target local oscillation signal is determined by the following formula:

[0017] ;

[0018] Among them, f low is the frequency of the target local oscillator signal, f1 is the first frequency, n is the number of known electromagnetic radiation signals, and f ra·i is the frequency of the ith electromagnetic radiation signal, f un is a correction factor used to represent the frequency of unknown electromagnetic radiation.

[0019] According to a communication power supply method for an overhead crane provided by the present invention, the target difference frequency signal is filtered by at least two bandpass filters based on the first frequency and the frequency of electromagnetic radiation generated by the target overhead crane working at the first frequency to obtain a second electrical signal, including:

[0020] Based on the first frequency, determining a filtering frequency band of a first band-pass filter; based on the frequencies of various electromagnetic radiations generated by the target overhead travelling vehicle operating at the first frequency, determining a filtering frequency band of at least one second band-pass filter;

[0021] The target difference frequency signal is filtered through the first bandpass filter and at least one second bandpass filter to obtain the second electrical signal.

[0022] According to a communication power supply method for an overhead crane provided by the present invention, determining a filtering frequency band of at least one second bandpass filter based on the frequencies of various electromagnetic radiations generated by the target overhead crane operating at the first frequency includes:

[0023] Determining a distribution interval of the frequency of each electromagnetic radiation based on the frequency of each electromagnetic radiation generated by the target overhead travelling vehicle operating at the first frequency;

[0024] The frequency distribution interval of each electromagnetic radiation, setting the center frequency of the second bandpass filter to the median of the frequency distribution interval of the electromagnetic radiation, and determining the bandwidth of the second bandpass filter so that the filtering frequency band of the second bandpass filter covers at least two frequencies of the electromagnetic radiation.

[0025] According to a communication power supply method for an overhead crane provided by the present invention, the electromagnetic radiation generated by the target overhead crane operating at the first frequency includes at least one of the electromagnetic radiation frequency of the drive system, the electromagnetic radiation frequency of the travel system and the electromagnetic radiation frequency of the inverter.

[0026] The present invention also provides a communication power supply device for an overhead traveling vehicle, comprising:

[0027] A first processing module, configured to determine a first frequency of the first electrical signal when the target overhead travelling vehicle obtains the first electrical signal for power supply;

[0028] an input module, configured to input the first electrical signal into a mixer when the first frequency is greater than a frequency threshold;

[0029] a frequency mixing module, configured to mix the first electrical signal with a target local oscillator signal through a frequency mixer to generate a target sum frequency signal and a target difference frequency signal; the frequency of the target local oscillator signal is less than the first frequency, and the frequency of the local oscillator signal is determined based on the first frequency and the frequency of electromagnetic radiation generated by the target overhead travelling vehicle operating at the first frequency;

[0030] a second processing module, configured to filter the target difference frequency signal through at least two band-pass filters based on the first frequency and the frequency of electromagnetic radiation generated by the target overhead travelling vehicle operating at the first frequency, so as to obtain a second electrical signal;

[0031] The third processing module is used to determine the second electrical signal as the communication power supply signal of the target overhead travelling vehicle.

[0032] The present invention also provides an overhead crane, comprising: a power supply system, a driving system, a traveling system, a communication system, a vehicle body and a signal modulation system;

[0033] The driving system is used to drive the power supply system to obtain power from the power line, the walking system is used to move on the track according to the power obtained by the power supply system, and the vehicle body is used to carry semiconductor products; the signal modulation system includes at least two bandpass filters and a mixer, and the signal modulation system is used to modulate the electrical signal obtained by the power supply system;

[0034] The overhead crane adopts any of the above-mentioned communication power supply methods for overhead cranes to supply power to the communication system.

[0035] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the communication power supply method for an overhead crane as described above is implemented.

[0036] The present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the communication power supply method for an overhead crane as described in any one of the above is implemented.

[0037] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the communication power supply method for an overhead crane as described above is implemented.

[0038] The communication power supply method, device, overhead crane, electronic device and storage medium of the overhead crane provided by the present invention process the first electrical signal of the target overhead crane by a mixer when the frequency of the first electrical signal is relatively large, so as to obtain a target difference frequency signal with a relatively low frequency, and further filter out the frequency band that may interfere with the communication of the overhead crane by a bandpass filter, so that the overhead crane can communicate in a more suitable frequency band without interference, thereby ensuring the normal communication and operation of the overhead crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 This is one of the flow charts of the communication power supply method for an overhead crane provided by the present invention;

[0041] Figure 2 This is the second flow chart of the communication power supply method for an overhead traveling vehicle provided by the present invention;

[0042] Figure 3 It is a structural schematic diagram of a communication power supply device for an overhead traveling vehicle provided by the present invention;

[0043] Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Combine the following Figure 1-Figure 4 The invention describes a method and device for power supplying a communication power supply for an overhead crane, an overhead crane, an electronic device and a storage medium.

[0046] like Figure 1 As shown, the communication power supply method for an overhead traveling vehicle according to an embodiment of the present invention mainly includes step 110 , step 120 , step 130 , step 140 and step 150 .

[0047] Step 110: when the target overhead travelling vehicle obtains the first electrical signal for power supply, determine a first frequency of the first electrical signal.

[0048] The first electrical signal is an electrical signal for power supply obtained by the target overhead travelling vehicle from an external source such as a Litz wire arranged on a track. The first frequency determines the characteristics of the signal and affects the transmission quality of the signal and subsequent processing.

[0049] After receiving the first electrical signal from the outside, the target overhead travelling vehicle detects the frequency of the signal and determines the frequency value of the signal, namely, the first frequency.

[0050] After determining the frequency of the first electrical signal, subsequent processing steps will be able to perform appropriate signal processing based on the first frequency.

[0051] Step 120: input the first electrical signal to the mixer when the first frequency is greater than the frequency threshold.

[0052] A mixer generates new signals, usually sum frequency signals and difference frequency signals, by mixing two signals. The frequency threshold is a preset frequency value used to determine whether to perform subsequent mixing operations.

[0053] Check whether the first frequency is greater than a frequency threshold. If so, the frequency of the first electrical signal is high enough to generate electromagnetic interference to the communication system, and is suitable for the next step of frequency mixing.

[0054] Ensure that only signals that meet certain frequency conditions enter the mixer, avoid low-frequency signals or signals that do not meet the requirements from being processed, thereby improving the system's operating efficiency and accuracy.

[0055] Step 130: Mix the first electrical signal with the target local oscillator signal through a mixer to generate a target sum frequency signal and a target difference frequency signal.

[0056] The sum frequency signal is the signal output by the mixer, and its frequency is the sum of the input signal frequencies. The difference frequency signal is also the signal output by the mixer, and its frequency is the difference of the input signal frequencies.

[0057] The mixer mixes the first electrical signal with the target local oscillator signal to generate two signals, one is a sum frequency signal and the other is a difference frequency signal.

[0058] The frequency of the target local oscillator signal is less than the first frequency. By adjusting the frequency of the local oscillator signal, the frequencies of the sum frequency signal and the difference frequency signal can be controlled.

[0059] By mixing, the signal frequency can be effectively adjusted to generate a signal suitable for subsequent processing, such as a difference frequency signal. The difference frequency signal is in a lower frequency band, which is convenient for subsequent filtering and processing.

[0060] In some embodiments, mixing the first electrical signal with the target local oscillator signal through a mixer to generate a target sum frequency signal and a target difference frequency signal includes the following process.

[0061] The first electrical signal and the target local oscillator signal can be input into corresponding ports of the mixer; the first electrical signal and the target local oscillator signal are mixed by generating an intermodulation effect through the nonlinear element in the radio frequency integrated circuit of the mixer; the first electrical signal and the target local oscillator signal are summed to obtain a target sum frequency signal, and the first electrical signal and the target local oscillator signal are subtracted to obtain a target difference frequency signal.

[0062] The mixer has two input ports, one for receiving the first electrical signal and the other for receiving the target local oscillator signal. The two signals will enter the RF integrated circuit of the mixer for mixing. The mixer contains nonlinear elements such as diodes or other semiconductor elements. The characteristics of nonlinear elements cause the two input signals to interact with each other and produce intermodulation effects. Intermodulation effect refers to the generation of new frequency components (i.e., sum frequency signals and difference frequency signals) when two signals are mixed in a nonlinear way.

[0063] Specifically, the intermodulation effect causes two input signals to mix at different frequencies. This mixing can also be not just direct addition or subtraction, but also generate new frequency components through nonlinear processes.

[0064] The sum frequency signal refers to the result of adding the frequencies of the two input signals. That is, the frequency of the sum frequency signal is the frequency of the first electrical signal plus the frequency of the target local oscillator signal. The difference frequency signal refers to the result of subtracting the frequencies of the two input signals. That is, the frequency of the difference frequency signal is the frequency of the first electrical signal minus the frequency of the target local oscillator signal. Due to the nonlinear characteristics of the mixer, the first electrical signal and the target local oscillator signal will not only add to generate a sum frequency signal, but also subtract to generate a difference frequency signal.

[0065] It is understandable that the frequency of the target local oscillator signal is lower than the first frequency in order to obtain a target difference frequency signal with a lower frequency, thereby reducing the power consumption frequency of the communication system and avoiding interference from high-frequency electrical signals.

[0066] It can be understood that the frequency of the local oscillator signal is determined based on the first frequency and the frequency of electromagnetic radiation generated by the target overhead travelling vehicle operating at the first frequency.

[0067] In some embodiments, the frequency of the target local oscillator signal is determined by the following formula:

[0068] ;

[0069] Among them, f low is the frequency of the target local oscillator signal, f1 is the first frequency, n is the number of known electromagnetic radiation signals, and f ra·i is the frequency of the ith electromagnetic radiation signal, f un is a correction factor used to represent the frequency of unknown electromagnetic radiation.

[0070] The average of the known radiated signal frequencies can be calculated and subtracted from the first frequency to obtain the approximate local oscillator frequency. In order to estimate the impact of undetected radiated signals on the system, a compensation correction factor f can be used un ,The correction factor can be determined based on system modeling, prior knowledge, or measurement experience.

[0071] Step 140 , based on the first frequency and the frequency of electromagnetic radiation generated by the target overhead travelling vehicle operating at the first frequency, filter the target difference frequency signal through at least two bandpass filters to obtain a second electrical signal.

[0072] A bandpass filter is a filter that only allows signals within a certain frequency band to pass through, and signals in other frequency bands will be attenuated or blocked.

[0073] At least two bandpass filters are used to filter out stray frequencies and interference signals in the difference frequency signal and retain the frequency band of the target signal. Through these filters, the required electrical signal can be accurately extracted. Based on the first frequency and the frequency of the electromagnetic radiation generated by the overhead crane working at the first frequency, the working range of the filter can be determined to ensure efficient extraction of the target signal. The bandpass filter can effectively remove unnecessary frequency components, improve the purity of the signal, reduce interference, and ensure that only the second electrical signal is left, making subsequent processing and communication more stable and reliable, and avoiding the influence of irrelevant signals.

[0074] Step 150: determine the second electrical signal as a communication power supply signal of the target overhead travelling vehicle.

[0075] The second electrical signal refers to a signal after filtering, which contains effective communication and power supply information. The communication power supply signal is a power supply signal provided to the target overhead crane, and is also used to realize the communication of the overhead crane.

[0076] The frequency of the second electrical signal is different from the frequencies involved in the operation of the overhead crane. The transmission stability and interference suppression of the second electrical signal are effectively guaranteed, ensuring the efficient operation of the target overhead crane in terms of communication and power supply.

[0077] According to the communication power supply method for an overhead crane provided in an embodiment of the present invention, when the frequency of the first electrical signal of the target overhead crane is relatively large, the first electrical signal is processed by a mixer to obtain a target difference frequency signal with a lower frequency, and the frequency band that may interfere with the communication of the overhead crane is further filtered out by a bandpass filter, so that the overhead crane can communicate in a more suitable frequency band without interference, thereby ensuring the normal communication and operation of the overhead crane.

[0078] In some embodiments, based on the first frequency and the frequency of electromagnetic radiation generated by the target overhead travelling vehicle operating at the first frequency, the target difference frequency signal is filtered by at least two bandpass filters to obtain a second electrical signal, including step 210 and step 220 .

[0079] Step 210, determining a filtering frequency band of a first bandpass filter based on the first frequency; determining a filtering frequency band of at least one second bandpass filter based on the frequencies of various electromagnetic radiations generated by the target overhead travelling vehicle operating at the first frequency;

[0080] Step 220: Filter the target difference frequency signal through a first bandpass filter and at least one second bandpass filter to obtain a second electrical signal.

[0081] A bandpass filter is a frequency selective filter that allows signals within a certain frequency range to pass through and suppresses signals in other frequency ranges. In step 210, a frequency range of a first bandpass filter is determined based on a given first frequency, which can effectively filter out irrelevant frequency parts.

[0082] The target crane will generate a series of electromagnetic radiations within a specific frequency range. Similarly, the second bandpass filter will also determine its filtering frequency band according to the frequency of the electromagnetic radiation generated by the target crane at the first frequency. In other words, the frequency band of the second bandpass filter should include the frequency range of the electromagnetic radiation generated by the target crane when it is working, ensuring that it can effectively filter out other irrelevant signals.

[0083] The electromagnetic radiation generated by the target overhead travelling crane operating at the first frequency includes at least one of an electromagnetic radiation frequency of a driving system, an electromagnetic radiation frequency of a traveling system, and an electromagnetic radiation frequency of an inverter.

[0084] The electromagnetic radiation frequency of the drive system is the electromagnetic radiation generated by the motor or other power device that drives the overhead crane power supply system, such as the power supply, during operation. The motor and other driving devices will generate electromagnetic signals in a certain frequency range when working.

[0085] The electromagnetic radiation frequency of the traveling system refers to the electromagnetic radiation frequency generated by the motor of the traveling system of the overhead crane, such as wheels or similar devices, during operation.

[0086] An inverter is usually used to convert direct current into alternating current. When it is working, it will generate electromagnetic radiation of a certain frequency, which is related to the process of the inverter converting electrical energy.

[0087] In order to obtain the electromagnetic radiation generated by the target overhead crane, the most direct way is through experimental measurement. The frequency range of these radiations can also be predicted and inferred with the help of theoretical analysis and modeling, simulation and reference to relevant standards and specifications. Through these methods, the frequency of electromagnetic radiation generated by the overhead crane system can be obtained for further analysis and processing.

[0088] Electromagnetic radiation can be measured using an electromagnetic field detector or spectrum analyzer. These instruments can capture the electromagnetic waves emitted by a device or system and display their frequency distribution through spectrum analysis. For example, a spectrum analyzer can directly measure the electromagnetic waves generated by the target overhead crane system and obtain its precise frequency range.

[0089] In some embodiments, electromagnetic detectors may be arranged near various important components of the overhead crane, such as motors, inverters, and electrical connections, to capture electromagnetic radiation signals generated when the system is running. These signals may be captured and recorded by sensors to obtain frequency distribution.

[0090] Generally, electrical equipment including overhead crane systems must comply with certain electromagnetic compatibility (EMC) standards. EMC testing uses standard test equipment to detect whether the equipment generates electromagnetic interference that exceeds the permitted limit. These standards usually specify electromagnetic radiation limits within different frequency ranges.

[0091] For example, devices such as inverters and motors usually have technical data provided by the manufacturer, including parameters such as their operating frequency, switching frequency, etc. These documents can also tell you their radiated frequency range.

[0092] The target difference frequency signal is passed through a first bandpass filter to filter out signal components near the first frequency. Then, the signal is passed through at least one second bandpass filter to further filter out signal components related to electromagnetic radiation of the target overhead traveling vehicle, and only frequency components unrelated to the target overhead traveling vehicle are retained.

[0093] It can be understood that, through the filtering process of the above two-stage bandpass filter, the second electrical signal is finally obtained, which is a clear signal after filtering and removing unnecessary frequencies. This signal does not contain the operating frequency of the target overhead crane and the main electromagnetic radiation information, and removes redundant noise and interfering frequency parts.

[0094] In some embodiments, based on the frequencies of each electromagnetic radiation generated by the target overhead crane operating at the first frequency, determining the filtering frequency band of at least one second bandpass filter includes: based on the frequencies of each electromagnetic radiation generated by the target overhead crane operating at the first frequency, determining the distribution interval of the frequency of each electromagnetic radiation; based on the distribution interval of the frequency of each electromagnetic radiation, setting the center frequency of the second bandpass filter to the median of the distribution interval of the frequency of the electromagnetic radiation, and determining the bandwidth of the second bandpass filter so that the filtering frequency band of the second bandpass filter covers at least two frequencies of the electromagnetic radiation.

[0095] It is understandable that the frequency range, i.e., the frequency distribution interval, of all electromagnetic radiation signals generated by the target overhead crane needs to be analyzed, which can be obtained by measurement or analysis and may include multiple frequency points or ranges, such as different frequency signals generated by a drive system or inverter.

[0096] Based on the previous analysis, a median value, i.e. the midpoint of the frequency interval, will be selected in the frequency distribution interval of electromagnetic radiation as the center frequency of the bandpass filter. This median value is a representative frequency within the frequency range.

[0097] Bandwidth is the frequency range that a filter can pass, usually a range above and below the center frequency. Here, the bandwidth of the filter will be determined based on the characteristics of the electromagnetic radiation frequency distribution to ensure that at least two major electromagnetic radiation frequencies can be covered. In other words, the bandwidth must be wide enough to accommodate the multiple frequency components generated by the target overhead crane when it is working, ensuring that the signals of these frequencies can be effectively filtered, and can also save the number of filter settings and reduce costs.

[0098] Ultimately, by setting the center frequency and bandwidth of the second bandpass filter, a second bandpass filter can filter out as many interference signals as possible, ensuring that the second bandpass filter can effectively filter out unnecessary frequency components, and can effectively control and suppress electromagnetic radiation to avoid interfering with the system or comply with electromagnetic compatibility (EMC) requirements.

[0099] In this embodiment, by analyzing the frequency range of electromagnetic radiation generated by the target overhead crane during operation, the second bandpass filter is reasonably set, and the appropriate center frequency and bandwidth are selected so that the filter can effectively filter out interference signals and ensure that electromagnetic radiation of multiple frequencies can be processed, thereby achieving control and management of electromagnetic radiation, reducing the number of deployed second bandpass filters, and reducing hardware costs.

[0100] The communication power supply device of the overhead crane provided by the present invention is described below. The communication power supply device of the overhead crane described below and the communication power supply method of the overhead crane described above can be referred to each other.

[0101] like Figure 3 As shown, the communication power supply device for an overhead traveling vehicle according to the embodiment of the present invention mainly includes a first processing module 310 , an input module 320 , a frequency mixing module 330 , a second processing module 340 and a third processing module 350 .

[0102] The first processing module 310 is used to determine the first frequency of the first electrical signal when the target overhead travelling vehicle obtains the first electrical signal for power supply;

[0103] The input module 320 is used to input the first electrical signal to the mixer when the first frequency is greater than the frequency threshold;

[0104] The frequency mixing module 330 is used to mix the first electrical signal with the target local oscillator signal through a mixer to generate a target sum frequency signal and a target difference frequency signal; the frequency of the target local oscillator signal is less than the first frequency, and the frequency of the local oscillator signal is determined based on the first frequency and the frequency of electromagnetic radiation generated by the target overhead travelling vehicle operating at the first frequency;

[0105] The second processing module 340 is used to filter the target difference frequency signal through at least two bandpass filters based on the first frequency and the frequency of the electromagnetic radiation generated by the target overhead travelling vehicle operating at the first frequency to obtain a second electrical signal;

[0106] The third processing module 350 is used to determine the second electrical signal as a communication power supply signal of the target overhead travelling vehicle.

[0107] According to the communication power supply device for an overhead crane provided in an embodiment of the present invention, when the frequency of the first electrical signal of the target overhead crane is relatively large, the first electrical signal is processed by a mixer to obtain a target difference frequency signal with a lower frequency, and the frequency band that may interfere with the communication of the overhead crane is further filtered out by a bandpass filter, so that the overhead crane can communicate in a more suitable frequency band without interference, thereby ensuring the normal communication and operation of the overhead crane.

[0108] The present invention also provides an overhead crane, comprising: a power supply system, a driving system, a traveling system, a communication system, a vehicle body and a signal modulation system.

[0109] The driving system is used to drive the power supply system to obtain power from the power line, the walking system is used to move on the track according to the power obtained by the power supply system, and the vehicle body is used to carry semiconductor products; the signal modulation system includes at least two bandpass filters and a mixer, and the signal modulation system is used to modulate the electrical signal obtained by the power supply system. The overhead crane uses the communication power supply method of the above-mentioned overhead crane to supply power to the communication system.

[0110] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4As shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communication interface 420 and the memory 430 communicate with each other through the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute the communication power supply method of the overhead crane, the method comprising: determining the first frequency of the first electrical signal when the target overhead crane obtains the first electrical signal for power supply; inputting the first electrical signal into the mixer when the first frequency is greater than the frequency threshold; mixing the first electrical signal with the target local oscillator signal through the mixer to generate a target sum frequency signal and a target difference frequency signal; the frequency of the target local oscillator signal is less than the first frequency, and the frequency of the local oscillator signal is determined based on the first frequency and the frequency of the electromagnetic radiation generated by the target overhead crane when it works at the first frequency; filtering the target difference frequency signal through at least two bandpass filters based on the first frequency and the frequency of the electromagnetic radiation generated by the target overhead crane when it works at the first frequency to obtain a second electrical signal; and determining the second electrical signal as the communication power supply signal of the target overhead crane.

[0111] In addition, the logic instructions in the above-mentioned memory 430 can be implemented in the form of a software functional unit and can be stored in a computer-readable storage medium when it is sold or used as an independent product. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0112] On the other hand, the present invention also provides a computer program product, which includes a computer program. The computer program can be stored on a non-transitory computer-readable storage medium. When the computer program is executed by a processor, the computer can execute the communication power supply method for the overhead crane provided by the above methods, the method including: when the target overhead crane obtains the first electrical signal for power supply, determining the first frequency of the first electrical signal; when the first frequency is greater than the frequency threshold, inputting the first electrical signal into a mixer; mixing the first electrical signal with a target local oscillator signal through the mixer to generate a target sum frequency signal and a target difference frequency signal; the frequency of the target local oscillator signal is less than the first frequency, and the frequency of the local oscillator signal is determined based on the first frequency and the frequency of the electromagnetic radiation generated by the target overhead crane working at the first frequency; based on the first frequency and the frequency of the electromagnetic radiation generated by the target overhead crane working at the first frequency, filtering the target difference frequency signal through at least two bandpass filters to obtain a second electrical signal; and determining the second electrical signal as the communication power supply signal of the target overhead crane.

[0113] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which is implemented when the processor executes the communication power supply method for the overhead crane provided by the above methods, the method comprising: determining a first frequency of the first electrical signal when the target overhead crane obtains the first electrical signal for power supply; inputting the first electrical signal into a mixer when the first frequency is greater than a frequency threshold; mixing the first electrical signal with a target local oscillator signal through the mixer to generate a target sum frequency signal and a target difference frequency signal; the frequency of the target local oscillator signal is less than the first frequency, and the frequency of the local oscillator signal is determined based on the first frequency and the frequency of the electromagnetic radiation generated by the target overhead crane operating at the first frequency; filtering the target difference frequency signal through at least two bandpass filters based on the first frequency and the frequency of the electromagnetic radiation generated by the target overhead crane operating at the first frequency to obtain a second electrical signal; and determining the second electrical signal as the communication power supply signal of the target overhead crane.

[0114] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0115] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A communication power supply method for an overhead crane, characterized in that: include: In the case where the target overhead travelling vehicle obtains the first electrical signal for power supply, determining a first frequency of the first electrical signal; When the first frequency is greater than a frequency threshold, inputting the first electrical signal into a mixer; The first electrical signal is mixed with a target local oscillator signal by a mixer to generate a target sum frequency signal and a target difference frequency signal; the frequency of the target local oscillator signal is less than the first frequency, and the frequency of the local oscillator signal is determined based on the first frequency and the frequency of electromagnetic radiation generated by the target overhead travelling vehicle operating at the first frequency; Based on the first frequency and the frequency of electromagnetic radiation generated by the target overhead travelling vehicle operating at the first frequency, filtering the target difference frequency signal through at least two bandpass filters to obtain a second electrical signal; The second electrical signal is determined as a communication power supply signal of the target overhead travelling vehicle.

2. The communication power supply method for an overhead crane according to claim 1, characterized in that: The step of mixing the first electrical signal with a target local oscillator signal through a mixer to generate a target sum frequency signal and a target difference frequency signal comprises: Inputting the first electrical signal and the target local oscillator signal into corresponding ports of the mixer; The first electrical signal is mixed with the target local oscillator signal by generating an intermodulation effect through a nonlinear element in the radio frequency integrated circuit of the mixer; The first electrical signal and the target local oscillator signal are summed to obtain the target sum frequency signal, and the first electrical signal and the target local oscillator signal are subtracted to obtain the target difference frequency signal.

3. The communication power supply method for an overhead crane according to claim 2, characterized in that: The frequency of the target local oscillator signal is determined by the following formula: ； Among them, f low is the frequency of the target local oscillator signal, f1 is the first frequency, n is the number of known electromagnetic radiation signals, and f ra·i is the frequency of the ith electromagnetic radiation signal, f un is a correction factor used to represent the frequency of unknown electromagnetic radiation.

4. The communication power supply method for an overhead crane according to claim 1, characterized in that: The step of filtering the target difference frequency signal through at least two bandpass filters based on the first frequency and the frequency of electromagnetic radiation generated by the target overhead travelling vehicle operating at the first frequency to obtain a second electrical signal comprises: Based on the first frequency, determining a filtering frequency band of a first band-pass filter; based on the frequencies of various electromagnetic radiations generated by the target overhead travelling vehicle operating at the first frequency, determining a filtering frequency band of at least one second band-pass filter; The target difference frequency signal is filtered through the first bandpass filter and at least one second bandpass filter to obtain the second electrical signal.

5. The communication power supply method for an overhead crane according to claim 4, characterized in that: The determining of the filtering frequency band of at least one second bandpass filter based on the frequencies of each electromagnetic radiation generated by the target overhead travelling vehicle operating at the first frequency comprises: Determining a distribution interval of the frequency of each electromagnetic radiation based on the frequency of each electromagnetic radiation generated by the target overhead travelling vehicle operating at the first frequency; The frequency distribution interval of each electromagnetic radiation, setting the center frequency of the second bandpass filter to the median of the frequency distribution interval of the electromagnetic radiation, and determining the bandwidth of the second bandpass filter so that the filtering frequency band of the second bandpass filter covers at least two frequencies of the electromagnetic radiation.

6. The communication power supply method for an overhead crane according to claim 1, characterized in that: The electromagnetic radiation generated by the target overhead travelling crane operating at the first frequency includes at least one of an electromagnetic radiation frequency of a driving system, an electromagnetic radiation frequency of a traveling system, and an electromagnetic radiation frequency of an inverter.

7. A communication power supply device for an overhead crane, characterized in that: The communication power supply device of the overhead crane adopts the communication power supply method of the overhead crane as claimed in any one of claims 1 to 6 to provide communication power supply to the overhead crane, and the communication power supply device of the overhead crane comprises: A first processing module, configured to determine a first frequency of the first electrical signal when the target overhead travelling vehicle obtains the first electrical signal for power supply; an input module, configured to input the first electrical signal into a mixer when the first frequency is greater than a frequency threshold; a frequency mixing module, configured to mix the first electrical signal with a target local oscillator signal through a frequency mixer to generate a target sum frequency signal and a target difference frequency signal; the frequency of the target local oscillator signal is less than the first frequency, and the frequency of the local oscillator signal is determined based on the first frequency and the frequency of electromagnetic radiation generated by the target overhead travelling vehicle operating at the first frequency; a second processing module, configured to filter the target difference frequency signal through at least two band-pass filters based on the first frequency and the frequency of electromagnetic radiation generated by the target overhead travelling vehicle operating at the first frequency, so as to obtain a second electrical signal; The third processing module is used to determine the second electrical signal as the communication power supply signal of the target overhead travelling vehicle.

8. An overhead travelling crane, characterized in that: include: Power supply system, drive system, travel system, communication system, vehicle body and signal modulation system; The driving system is used to drive the power supply system to obtain power from the power line, the walking system is used to move on the track according to the power obtained by the power supply system, and the vehicle body is used to carry semiconductor products; the signal modulation system includes at least two bandpass filters and a mixer, and the signal modulation system is used to modulate the electrical signal obtained by the power supply system; The overhead crane adopts the communication power supply method of the overhead crane as claimed in any one of claims 1 to 6 to supply power to the communication system.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, characterized in that: When the processor executes the program, the communication power supply method for the overhead traveling vehicle as claimed in any one of claims 1 to 6 is implemented.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the communication power supply method for an overhead traveling vehicle as claimed in any one of claims 1 to 6 is implemented.

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