Method and device for obtaining and supplying power to overhead crane, overhead crane and electronic equipment

Abstract

The present invention provides a method and device for obtaining and supplying power for an overhead crane, an overhead crane and electronic equipment, and belongs to the technical field of semiconductor processing equipment. The method and device for obtaining and supplying power for an overhead crane of the present invention ensures that the overhead crane can operate stably under different power supply states by realizing intelligent management of the power supply for the overhead crane. When the track power supply is unstable, the power supply is switched to supercapacitor power supply in time, and the reliability of power supply is ensured by real-time monitoring of the power state, thereby improving the safety and reliability of the operation of the overhead crane, optimizing energy use, reducing the risk of system failure, and improving the overall operation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor processing equipment, and in particular to a method and device for obtaining and supplying power to an overhead crane, an overhead crane and electronic equipment. Background Art

[0002] With the advancement of semiconductor technology, the size and weight of wafers continue to increase, and manual handling can no longer meet the demand, so automatic material handling systems (AMHS) are widely used. AMHS replaces manual handling with automation, which not only improves production efficiency, but also reduces errors, vibrations and environmental pollution, helping to improve product yield. The system consists of equipment such as material handling overhead crane (OHT), automatic guided vehicle (AGV), rail-guided vehicle (RGV), and is equipped with storage systems (such as Stocker, UTS and NTB). The overhead crane travels along the predetermined track and hands over materials with the material transfer platform. In addition, wafer fabs generally use non-contact power supply technology (IPT) to transmit power to AMHS through magnetic field coupling to ensure the stable operation of the system.

[0003] In AMHS, a contactless power supply system is used to provide power to the material handling overhead crane (OHT), which brings a more flexible and mechanical contact-free power transmission method, reduces contact wear and improves system reliability. However, the power supply system on the track requires the laying of power lines (such as Litz wires), but in some special areas, due to the setting of the track or other structural reasons, the overhead crane may not be able to normally draw power from the Litz wire on the track, thus affecting the operation of the overhead crane. Summary of the invention

[0004] The present invention provides a method and device for taking and supplying power to an overhead crane, an overhead crane and electronic equipment, which are used to solve the defect in the prior art that the overhead crane cannot supply power when taking power abnormally, and achieve the effect of ensuring the reliability of power supply to the overhead crane.

[0005] The present invention provides a method for obtaining and supplying electricity to an overhead travelling vehicle, wherein a super capacitor is arranged in the overhead travelling vehicle, and the method comprises:

[0006] The first power supply is used to take power from the power supply line on the track to supply power to the overhead travelling vehicle;

[0007] Detecting power supply parameters of the first power supply;

[0008] When the power supply parameters do not meet the preset parameter conditions, determining the position of the overhead travelling crane;

[0009] Determining a power supply source of the overhead crane based on the position of the overhead crane and the operation instruction received by the overhead crane;

[0010] In the case where the power supply source of the overhead travelling vehicle is the supercapacitor, determining the charge state of the supercapacitor;

[0011] When the charge state satisfies a preset charge, the supercapacitor is switched to supply power to the overhead travelling vehicle.

[0012] According to a method for obtaining and supplying power to an overhead travelling vehicle provided by the present invention, after switching to the super capacitor to supply power to the overhead travelling vehicle, the method further comprises:

[0013] Continue to detect the power supply parameters of the first power supply;

[0014] When the power supply parameters meet the preset parameter conditions, the first power supply is used to draw power from the power supply line on the track and then switched to the first power supply to supply power to the overhead travelling vehicle.

[0015] According to a method for supplying power to an overhead travelling crane provided by the present invention, after switching to the first power supply to supply power to the overhead travelling crane, the method further comprises:

[0016] The supercapacitor is charged by taking power from a power supply line on the track through the first power collector.

[0017] According to a method for obtaining and supplying power to an overhead crane provided by the present invention, the overhead crane further includes a second power supply, and determining the power supply source of the overhead crane based on the position of the overhead crane and the operation instruction received by the overhead crane includes:

[0018] When the position of the overhead crane is not the power switching point and the overhead crane is determined to have not reached the mission end based on the operation instruction received by the overhead crane, the power supply source of the overhead crane is determined to be to draw power from the power supply line on the track through the second power supply to supply power to the overhead crane.

[0019] According to a method for obtaining and supplying power to an overhead crane provided by the present invention, the overhead crane further includes a second power supply, and determining the power supply source of the overhead crane based on the position of the overhead crane and the operation instruction received by the overhead crane includes:

[0020] When the position of the overhead travelling crane is the power switching point and it is determined based on the operation instruction received by the overhead travelling crane that the overhead travelling crane has not reached the task end point, supplying power to the overhead travelling crane by taking power from the power supply line on the track through the second power supply;

[0021] When the power supply parameter of the second power supply does not meet the preset parameter condition, it is determined that the power supply source of the overhead traveling crane is switched to the super capacitor to supply power to the overhead traveling crane.

[0022] According to a method for supplying power to an overhead crane provided by the present invention, a soft start circuit is further provided in the overhead crane, the first power supply is connected to the super capacitor via a rectifier, and the output end of the super capacitor is connected to the motion actuator of the overhead crane via the soft start circuit;

[0023] When receiving a signal for supplying power to the overhead travelling vehicle through the super capacitor, the soft start circuit controls the super capacitor to increase current to supply power to the motion actuator of the overhead travelling vehicle.

[0024] According to a method for obtaining and supplying power to an overhead crane provided by the present invention, the soft start circuit includes a power field effect transistor and a pulse width modulation circuit;

[0025] The signal input end of the pulse width modulation circuit is connected to the control signal output end of the overhead crane, the signal output end of the pulse width modulation circuit is connected to the gate of the power field effect transistor, the pulse width modulation circuit sends a control signal to the gate of the power field effect transistor to adjust the gate voltage of the power field effect transistor to control the opening and closing of the power field effect transistor, the source of the power field effect transistor is connected to the output end of the super capacitor, and the drain of the power field effect transistor is connected to the motion actuator of the overhead crane.

[0026] The present invention also provides a power supply device for an overhead travelling crane, comprising:

[0027] A power supply module, used to supply power to the overhead travelling crane by taking power from a power supply line on the track through a first power supply;

[0028] A detection module, used to detect power supply parameters of the first power supply;

[0029] A first processing module, used for determining the position of the overhead travelling crane when the power supply parameter does not meet the preset parameter condition;

[0030] A second processing module, configured to determine a power supply source of the overhead travelling crane based on a position of the overhead travelling crane and an operation instruction received by the overhead travelling crane;

[0031] A third processing module is used to determine the charge state of the supercapacitor when the power supply source of the overhead travelling vehicle is a supercapacitor;

[0032] The switching module is used for switching to the super capacitor to supply power to the overhead travelling vehicle when the charge state satisfies a preset charge state.

[0033] The present invention also provides an overhead crane, comprising: a supercapacitor, a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein when the processor executes the program, any of the above-mentioned methods for obtaining and supplying power to the overhead crane is implemented.

[0034] 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, any of the above-mentioned methods for obtaining and supplying power to an overhead crane is implemented.

[0035] 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 power supply method for an overhead crane as described in any one of the above is implemented.

[0036] The present invention also provides a computer program product, comprising a computer program, wherein when the computer program is executed by a processor, the power supply method for an overhead traveling crane as described above is implemented.

[0037] The power supply method and device for the overhead crane, the overhead crane and the electronic equipment provided by the present invention realize intelligent management of the power supply for the overhead crane, thereby ensuring that the overhead crane can operate stably under different power supply states. When the track power supply is unstable, the power supply is promptly switched to supercapacitor power supply, and the reliability of power supply is ensured by real-time monitoring of the power status, thereby improving the safety and reliability of the operation of the overhead crane, optimizing energy use, reducing the risk of system failure, and improving the overall operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] 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 creative work.

[0039] Figure 1 This is one of the flow charts of the method for obtaining and supplying power to the overhead travelling crane provided by the present invention;

[0040] Figure 2 This is the second flow chart of the method for obtaining and supplying electricity to the overhead travelling crane provided by the present invention;

[0041] Figure 3 It is a structural schematic diagram of the power supply device of the overhead travelling crane provided by the present invention;

[0042] Figure 4 It is a structural schematic diagram of the electronic device provided by the present invention. DETAILED DESCRIPTION

[0043] 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.

[0044] Combine the following Figure 1-Figure 4 The invention describes a method and device for obtaining and supplying power to an overhead crane, an overhead crane and electronic equipment.

[0045] It should be noted that a supercapacitor is provided in the overhead travelling vehicle of the embodiment of the present invention. A supercapacitor, also known as an electrochemical capacitor or a supercapacitor, is a special type of capacitor that has a higher energy density and power density than a conventional capacitor and can be charged and discharged in a short time, but does not rely on the chemical reaction of a conventional chemical battery. Supercapacitors are different from batteries in the way they store energy. They mainly store charge through an electrostatic field, rather than through chemical reactions.

[0046] like Figure 1 As shown, the method for obtaining and supplying electricity for an overhead travelling crane according to an embodiment of the present invention mainly includes step 110 , step 120 , step 130 , step 140 , step 150 and step 160 .

[0047] Step 110: Power is drawn from the power supply line on the track through a first power supply to supply power to the overhead travelling vehicle.

[0048] The first power take-off refers to a device installed on the overhead crane, which is used to obtain power from the power supply line (such as Litz wire) on the track. The first power take-off usually obtains power from the power supply system on the track through magnetic field coupling to achieve wireless power transmission.

[0049] The power supply line on the track refers to the power transmission line laid on the overhead crane track, usually a Litz wire or other types of power supply lines, which can provide power to the overhead crane through electromagnetic induction.

[0050] In the track system of the overhead crane, the first power supply is used to obtain power from the power supply line on the track. During this process, the power supply of the overhead crane needs to be aligned with the power supply line on the track to achieve power transmission, thus realizing non-contact power supply of the overhead crane, reducing mechanical wear, and improving the reliability and service life of the system.

[0051] Step 120: Detect power supply parameters of the first power supply.

[0052] Power supply parameters include current, voltage, power and other related data between the power supply unit and the power supply line, which are used to judge the stability and quality of power transmission.

[0053] It is understandable that the current, voltage and other parameters of the power supply can be detected in real time by sensors or monitoring systems to obtain feedback information about power transmission. These parameters can help determine the quality of power supply and whether it meets the operating requirements of the overhead crane.

[0054] Through real-time detection, power transmission problems such as power instability, low voltage or power outages can be identified in advance, thus avoiding system failures.

[0055] Step 130: When the power supply parameters do not meet the preset parameter conditions, determine the position of the overhead travelling crane.

[0056] The power supply parameters do not meet the preset parameter conditions, which means that the current, voltage or other parameters obtained by the power supply from the power supply line do not meet the normal range set by the system. For example, the voltage is lower than the set value, the current fluctuation is too large, or the power supply cannot be stable.

[0057] The position of the overhead crane refers to the specific position of the overhead crane on the track. This position can be detected by a positioning device, or the real-time position can be determined by the overhead crane scanning the positioning tag on the track.

[0058] If the power supply parameters of the first power supply are abnormal, the position of the overhead travelling crane can be determined by a positioning system such as a built-in position sensor or a track marker.

[0059] In this case, the position of the overhead crane can be quickly determined when the power is unstable, and the cause of the abnormal power supply of the overhead crane can be determined. Then, timely countermeasures can be taken to prevent the overhead crane from continuing to operate in an unstable power environment and reduce the risk of system damage.

[0060] Step 140, determining a power supply source of the overhead travelling crane based on the position of the overhead travelling crane and the operation instruction received by the overhead travelling crane.

[0061] The position of the overhead travelling crane refers to the specific position of the overhead travelling crane on the track, which has been mentioned in the above steps.

[0062] Operation instructions may refer to control instructions issued by the system to the overhead crane, including the starting and ending points of the mission, operating speed, direction, parking and other scheduling control instructions.

[0063] The power supply source refers to the power source of the overhead crane, which may be the power supply line on the track or a super capacitor, etc.

[0064] The current operation requirements of the overhead crane can be determined based on the location of the overhead crane and the operation instructions received. If the overhead crane is close to an area where power supply needs to be switched, it can be determined based on the location whether it needs to switch to other power sources, such as switching to supercapacitors.

[0065] Reasonably switch the power supply source according to the position and operation instructions to ensure that the overhead crane always has a stable and reliable power supply and avoid system stagnation or failure due to power interruption.

[0066] Step 150: When the power supply source of the overhead travelling crane is a super capacitor, determine the charge state of the super capacitor.

[0067] The state of charge refers to the current energy storage state of the supercapacitor, and is usually monitored by voltage or current measurement to monitor the degree of charge and discharge of the capacitor.

[0068] When the power supply source of the overhead crane is switched to the supercapacitor, it is necessary to detect the charge state of the supercapacitor. The voltage of the capacitor can be detected by a sensor or a monitoring circuit to determine whether its charge meets the operation requirements of the overhead crane.

[0069] Step 160: When the charge state satisfies the preset charge, switch to the supercapacitor to supply power to the overhead traveling vehicle.

[0070] The charge state meeting the preset charge state means that the charge state of the supercapacitor has reached or exceeded a preset threshold, for example, the capacitor voltage is higher than a predetermined safety level.

[0071] When it is detected that the supercapacitor has sufficient power, the supercapacitor can be automatically switched to serve as the power source of the overhead traveling vehicle. Specifically, this can be achieved through a relay or a power conversion switch to ensure that the overhead traveling vehicle can continue to operate normally without track power supply.

[0072] The system switches to supercapacitor power supply only when the capacitor is fully charged, avoiding the problem of insufficient power supply when the supercapacitor is insufficient, improving the reliability and continuity of the system, and reducing the impact of power outages on overhead crane operation.

[0073] The method for obtaining and supplying power to an overhead crane provided in an embodiment of the present invention ensures that the overhead crane can operate stably under different power supply conditions by realizing intelligent management of the power supply to the overhead crane. When the track power supply is unstable, the method promptly switches to supercapacitor power supply, and ensures the reliability of power supply by real-time monitoring of the power status. This improves the safety and reliability of the operation of the overhead crane, optimizes energy usage, reduces the risk of system failure, and improves the overall operating efficiency.

[0074] It should be noted that the power supply source is determined based on the current position of the overhead crane and the received operation instructions. Specifically, the operation instructions and the position of the overhead crane work together to determine whether the overhead crane needs to switch the power supply source, especially the decision to switch from track power supply to supercapacitor power supply. Dynamic response control is achieved through understanding the track position and operation tasks of the overhead crane.

[0075] In a rail system, the track is usually divided into several areas or stations, and the position of the overhead crane will be accurately determined to a specific track section area or node.

[0076] The task scheduling of the overhead crane is issued by the system. The task can be issued by the operator or based on the emergency control instructions automatically generated by the system. For example, the overhead crane may need to transport materials from one location (starting point) to another location (end point), or it may need to stop or change the direction of operation in some cases.

[0077] In some embodiments, the type of operation instruction received by the overhead crane and the location of the overhead crane are used to determine the power supply source.

[0078] In some embodiments, the task type may include a static task and a dynamic task, and the type of the execution instruction may be a static task execution instruction or a dynamic task execution instruction.

[0079] Static tasks are usually standard material handling tasks, such as from starting point A to end point B, and the overhead crane performs the task according to the predetermined path and speed.

[0080] In this case, the current position of the overhead crane can be used to determine whether it has entered an abnormal power supply area and decide whether it needs to switch to supercapacitor power supply. The system will give priority to track power supply and will only switch to supercapacitor when the grid power supply is unavailable or unstable.

[0081] If the task is for the crane to perform standard operations on the track (such as from point A to point B), the system can determine whether to switch power supply based on the crane's current track position. For example, when the crane approaches an area where power supply from the track cannot be obtained, the system can automatically determine whether to switch to supercapacitor power supply at this time.

[0082] Alternatively, if the overhead crane is approaching a weak signal area or power outage area of ​​a rail power supply line, the system will decide whether to switch to supercapacitor power supply in advance based on the current position of the overhead crane and mission requirements.

[0083] Dynamic tasks include task interruptions, emergency tasks, or temporary dispatch instructions, such as changing the route, emergency stopping, or speed adjustment.

[0084] In this case, the system dynamically adjusts the power supply source based on the mission requirements and the current position of the overhead crane. For example, when the mission requires the overhead crane to quickly adjust its direction or speed, the system can choose to switch to supercapacitor power supply for a quick response.

[0085] The system will automatically generate operating instructions based on the crane's mission type, current status, and emergency instructions, such as the need to adjust direction or speed during operation. At this time, the system will calculate in real time whether it is necessary to switch the power source to support the crane's emergency dispatch needs.

[0086] For example, if the system detects that the power supply on the track is unstable (current fluctuations or insufficient voltage), but the current mission of the overhead crane requires it to continue moving forward or dispatching, the system will automatically decide to switch to supercapacitor power supply to ensure that the mission can be completed on time.

[0087] In some embodiments, the execution instruction types also include long-term continuous execution instructions and short-term scheduling instructions.

[0088] Long-term continuous operation instructions refer to instructions that the overhead crane needs to perform long-term material handling tasks. The system determines whether it needs to switch to supercapacitor power supply in advance based on the current position to reduce dependence on the track power supply.

[0089] A short-time dispatch instruction means that if the overhead crane receives an instruction to complete a task in a short period of time (such as short-distance transportation), it may be necessary to switch to supercapacitor power supply in the event of power supply fluctuations to improve operational stability and efficiency.

[0090] When the vehicle is performing a task, the system will automatically switch the power supply according to the preset rules. For example, if the track power supply voltage is detected to be insufficient, the system will automatically switch to supercapacitor power supply.

[0091] Suppose the overhead crane is performing a complex task that requires rapid movement between different track segments:

[0092] The mission requires going from the starting point A to the end point B. On the way, the vehicle may pass through an area C where the track power is weak, and in this area C, the power supply is unstable.

[0093] When the overhead crane is close to area C, the system finds out that it has entered a weak power supply area based on the location information and immediately determines whether it needs to switch to supercapacitor power supply.

[0094] It is understandable that through intelligent control based on the position and operation instructions of the overhead crane, the selection of power supply sources can be dynamically adjusted to maximize the efficiency and stability of the system. Power supply switching decisions can be made based on the real-time position of the overhead crane, task requirements, and power supply status to ensure that the overhead crane can obtain the required power support in different working environments. At the same time, intelligent decision-making can also effectively deal with complex situations such as unstable power supply and temporary emergency tasks, avoiding the impact of power outages on production.

[0095] In some embodiments, the overhead crane also includes a second power supply unit, and determining the power supply source of the overhead crane based on the position of the overhead crane and the operating instructions received by the overhead crane includes: when the position of the overhead crane is not the power switching point and it is determined based on the operating instructions received by the overhead crane that the overhead crane has not reached the mission end, determining that the power supply source of the overhead crane is to draw power from the power supply line on the track through the second power supply unit to supply power to the overhead crane.

[0096] The second power take-off is another power take-off device on the overhead crane, similar to the first power take-off. Its function is to obtain power from the power supply line at other locations on the track to provide power for the overhead crane.

[0097] The location is not a power switching point location, which means that the overhead travelling crane is not currently in a specific location where power switching is required, such as a track switching point or a power supply switching point. The power supply in the current track area may be normal, and there is no need to switch the power source.

[0098] In the mission instructions received by the overhead crane, the mission end point has not been reached, which means that the overhead crane needs to continue running for a certain distance to complete the remaining transportation mission.

[0099] The power source of the overhead crane is determined by its position and the progress of the mission. If the current position of the overhead crane is not the power switch point and the mission has not been completed, that is, the overhead crane has not reached the mission end, the overhead crane will continue to use the track power supply, that is, draw power from the power supply line on the track through the second power supply.

[0100] In other words, during normal operation, the crane will first obtain power from the power supply line on the track until it reaches a special position where power switching is required. If the crane has not completed its task and the current position does not require power switching, the cause of the abnormality may be that the power supply of the first power supply is abnormal. At this time, the second power supply is switched to continuously provide power to the crane to ensure that the crane continues to operate.

[0101] The distance and alignment between the power pick-up on the overhead crane and the rail power supply line are also critical. If the position of the power pick-up is not appropriate, or the placement of the power supply line does not take into account the movement trajectory of the overhead crane, it may result in unstable current reception. Since electricity is transmitted through magnetic field coupling, the coupling efficiency between the power pick-up and the power supply line will directly affect the power supply of the overhead crane. If there is a slight deviation in the movement trajectory of the overhead crane, or the magnetic field strength of the power supply line is uneven, the overhead crane may not be able to obtain stable power from the rail power supply system.

[0102] In this embodiment, the design of the second power supply ensures that the overhead travelling vehicle can smoothly draw power in different track areas, and the problem of abnormal coupling between the first power supply and the power supply line can be avoided.

[0103] In some embodiments, Figure 2 As shown, the overhead crane further includes a second power supply. Based on the position of the overhead crane and the operation instruction received by the overhead crane, determining the power supply source of the overhead crane includes steps 210 and 220.

[0104] Step 210: When the position of the overhead travelling crane is the power switching point and it is determined based on the operation instruction received by the overhead travelling crane that the overhead travelling crane has not reached the mission end point, power is supplied to the overhead travelling crane by taking power from the power supply line on the track through a second power supply.

[0105] Step 220: When the power supply parameters of the second power supply do not meet the preset parameter conditions, it is determined that the power supply source of the overhead traveling crane is switched to the super capacitor to supply power to the overhead traveling crane.

[0106] The power switching point usually refers to a predetermined track position where the overhead crane can switch the power supply source, that is, switch from power supply from the power supply line to power supply from the supercapacitor.

[0107] Although the overhead crane is at the power switching point, the mission instruction has not been completed, that is, the overhead crane has not reached the end of the mission, and the overhead crane still needs to continue running.

[0108] In this case, if the power switching point is located at a track bend or corner, a known uneven track or an inaccurate power line position, or a known location with physical obstacles on the power line, the overhead crane can first obtain power from the power line on the track through the second power supply. The function of the second power supply is to ensure that the overhead crane can still obtain power from the track power supply at the switching point to continue operating.

[0109] If the power supply parameters of the second power supply do not meet the preset conditions, that is, the power supply parameters (such as current, voltage, etc.) detected by the second power supply do not meet the preset normal working conditions, it can automatically switch to the supercapacitor for power supply. As a backup power supply, the supercapacitor will provide the necessary power for the overhead crane to ensure that the overhead crane continues to operate until the next power supply switch.

[0110] In this embodiment, if the overhead travelling vehicle enters the preset "power switching point" and the task has not been completed (ie, the overhead travelling vehicle has not reached the end point), the track power supply continues to be used according to the system settings, which is specifically achieved through the second power supply.

[0111] If the power obtained by the second power supply from the track power supply line is normal, the overhead crane continues to operate and continues to obtain energy from the track power supply line.

[0112] In this embodiment, through the dual design of the second power supply and the supercapacitor, the overhead crane can obtain a stable power supply under different circumstances and will not shut down due to power supply problems.

[0113] In some embodiments, a soft start circuit is also provided in the overhead crane, the first current collector is connected to the super capacitor through a rectifier, and the output end of the super capacitor is connected to the motion actuator of the overhead crane through the soft start circuit; when the soft start circuit receives a signal to supply power to the overhead crane through the super capacitor, the super capacitor is controlled to increase the current to supply power to the motion actuator of the overhead crane.

[0114] The function of the rectifier is to convert alternating current (AC) into direct current (DC) to meet the working requirements of supercapacitors and other DC power sources. After the electricity is processed by the rectifier, it becomes DC, which is convenient for storage and use.

[0115] The function of the soft start circuit is to control the gradual increase of current to avoid sudden changes in current when the supercapacitor is discharging, and to avoid excessive current shock to the electrical components of the overhead crane (such as the motor).

[0116] In this scenario, the role of the soft start circuit is to control the current to gradually increase to the required level after the supercapacitor starts to supply power, ensuring that the motion actuator of the overhead crane can start smoothly.

[0117] The motion actuator usually refers to the components that drive the crane to move, such as motors, transmission devices, etc. Its task is to receive power and convert electrical energy into mechanical power so that the crane can move according to instructions.

[0118] The crane obtains power from the rail power supply line through the first power take-off, converts it into direct current through the rectifier, and then charges the supercapacitor. The supercapacitor stores this electrical energy to provide high-power power when needed.

[0119] When the crane needs to obtain power from the supercapacitor, the output of the supercapacitor is connected to the crane's motion actuator (such as a motor) through a soft start circuit. The soft start circuit works at this time to ensure that the current increases gradually instead of directly passing the entire current through the motion actuator.

[0120] The soft start circuit controls the current to increase gradually to avoid sudden large current impact on the motion actuator, which may cause damage to electrical equipment or excessive vibration of mechanical parts. The core of the soft start circuit is to control the growth rate of current. By adjusting the rising slope of the current, the motor or other actuator can be started smoothly.

[0121] After receiving the signal of "supplying power to the crane through the supercapacitor", the soft start circuit begins to gradually increase the current and transmit the electric energy stored in the supercapacitor to the motion actuator of the crane. The increase of current will be gradually completed within the specified time to ensure that the motion actuator of the crane can start smoothly and gradually reach the required working state.

[0122] This method of gradually increasing the current prevents damage caused by sudden changes in capacitor discharge current, especially in overhead cranes with large loads such as motors, where excessive starting current may cause damage to the motor.

[0123] Supercapacitors provide high power current, but if there is no soft-start circuit control, directly supplying power to the load may cause unstable current output and even damage the supercapacitor. Therefore, the soft-start circuit plays an important protective role in providing power to prevent the capacitor current from being too high or too low.

[0124] The motion actuator of the overhead crane can be started smoothly through the soft start circuit without excessive impact during starting. Such a smooth start not only improves the stability of operation, but also avoids additional vibration or noise.

[0125] In this embodiment, the current can be gradually increased through the soft start circuit to ensure a smooth transition of the current, thereby avoiding current shocks from causing damage to electrical components (such as motors, drive devices, etc.) in the overhead crane system. This process not only improves the stability and life of the equipment, but also helps to ensure that the overhead crane system remains stable and efficient during operation.

[0126] In some embodiments, the soft start circuit includes a power field effect transistor and a pulse width modulation circuit; the signal input end of the pulse width modulation circuit is connected to the control signal output end of the overhead crane, the signal output end of the pulse width modulation circuit is connected to the gate of the power field effect transistor, the pulse width modulation circuit sends a control signal to the gate of the power field effect transistor to adjust the gate voltage of the power field effect transistor to control the opening and closing of the power field effect transistor, the source of the power field effect transistor is connected to the output end of the super capacitor, and the drain of the power field effect transistor is connected to the motion actuator of the overhead crane.

[0127] A power field effect transistor is an electronic switch that controls the flow of electric current. In an overhead crane system, it is used to control the flow of current from the supercapacitor to the actuators of the crane motion. The "on" and "off" states of the power field effect transistor determine whether current can flow through the circuit.

[0128] The source of the power field effect transistor is connected to the output end of the super capacitor, indicating that the super capacitor is a power source; the drain is connected to the motion actuator of the overhead crane, indicating that the current flows to the driving device of the overhead crane through this path.

[0129] The function of the pulse width modulation circuit is to generate a control pulse sequence according to the input control signal, and these pulses will control the gate voltage of the power field effect transistor.

[0130] The pulse width modulation circuit receives a control signal from the overhead crane control system, such as a signal for switching to a supercapacitor for power supply.

[0131] The pulse width modulation circuit outputs a control signal to the gate of the power field effect transistor, and controls the conduction degree of the power field effect transistor by adjusting the gate voltage, thereby controlling the magnitude of the current.

[0132] The gate is the control terminal of the power field effect transistor. The gate voltage determines whether the power field effect transistor is turned on. If the gate voltage is high, the power field effect transistor is turned on and current can flow; if the gate voltage is low, the power field effect transistor is turned off and current cannot flow.

[0133] In this circuit, the signal of the pulse width modulation circuit adjusts the gate voltage, thereby controlling the current to gradually increase and smoothly supply power to the motion actuator of the overhead crane.

[0134] Based on the input control signal, the pulse width modulation circuit generates a control signal with a specific frequency and duty cycle. The control signal is used to control the gate voltage of the power field effect transistor.

[0135] The duty cycle of the control signal (i.e. the ratio of the on / off time of the pulse to the total period) determines the extent of current transfer: a higher duty cycle increases the gate voltage, increasing the time the power field effect transistor is on and more current flows; a lower duty cycle, on the contrary, results in less current transfer.

[0136] As the control signal is gradually adjusted, the conduction time of the power field effect transistor gradually increases, and the current also gradually increases. In this way, the current provided by the super capacitor to the motion actuator of the overhead crane rises steadily, thereby ensuring the smooth start of the overhead crane.

[0137] When the current is stable and large enough, the motion actuator of the overhead crane starts to work normally, and the overhead crane runs according to the predetermined instructions.

[0138] In some embodiments, after switching to the supercapacitor to supply power to the overhead crane, the method for supplying power to the overhead crane of the present invention further includes: continuing to detect the power supply parameters of the first power supply; when the power supply parameters meet the preset parameter conditions, power is drawn from the power supply line on the track through the first power supply and switched to the first power supply to supply power to the overhead crane.

[0139] After the supercapacitor provides power to the overhead travelling carriage, the power supply status of the first power supply can continue to be monitored to confirm whether the track power supply has been restored or has become stable.

[0140] Only when the detected power supply parameters of the track power supply (such as voltage, current, etc.) meet the standards, can the track power supply be considered to have returned to normal and meet the conditions for continued use.

[0141] When it is detected that the track power supply has been restored and stabilized, the control circuit switches back to the track power supply. At this time, the first power supply starts to draw power from the track power supply line again and resumes supplying power to the overhead travelling vehicle.

[0142] Once the track power supply is restored and switched back to the first power supply, the overhead crane can continue to rely on the power supply system on the track for normal operation. The supercapacitor acts as a backup power source, ready to intervene again when the track power supply is unstable or interrupted.

[0143] In some embodiments, after switching to the first power supply to supply power to the overhead travelling vehicle, the power supply method for the overhead travelling vehicle in the embodiment of the present invention further includes: charging the super capacitor by charging power from the power supply line on the track through the first power supply.

[0144] When the track power supply is restored to stability, the overhead crane again draws power from the power supply line on the track through the first power supply, and uses this power to drive the motion actuator of the overhead crane to resume normal operation.

[0145] At the same time, the electricity obtained through the first power supply is not only used for the operation of the overhead travelling vehicle, but also used to charge the supercapacitors. In this way, the supercapacitors will store electrical energy and be prepared for possible power outages or unstable track power supply in the future.

[0146] This design ensures that the supercapacitor is always in a charged state without affecting the normal operation of the overhead crane, providing protection for possible power switching in the future, helping to improve the power reliability of the system, avoiding overhead crane shutdown due to power outages, and ensuring that the overhead crane always has enough electricity for emergency power supply.

[0147] The power supply device for an overhead crane provided by the present invention is described below. The power supply device for an overhead crane described below and the power supply method for an overhead crane described above can be referred to each other.

[0148] like Figure 3 As shown, the power supply device for an overhead travelling crane according to the embodiment of the present invention mainly includes a power supply module 310 , a detection module 320 , a first processing module 330 , a second processing module 340 , a third processing module 350 and a switching module 360 ​​.

[0149] The power supply module 310 is used to supply power to the overhead travelling vehicle by taking power from the power supply line on the track through the first power supply;

[0150] The detection module 320 is used to detect the power supply parameters of the first power supply;

[0151] The first processing module 330 is used to determine the position of the overhead travelling crane when the power supply parameters do not meet the preset parameter conditions;

[0152] The second processing module 340 is used to determine the power supply source of the overhead travelling crane based on the position of the overhead travelling crane and the operation instruction received by the overhead travelling crane;

[0153] The third processing module 350 is used to determine the charge state of the supercapacitor when the power supply source of the overhead travelling vehicle is the supercapacitor;

[0154] The switching module 360 ​​is used to switch to the super capacitor to supply power to the overhead travelling vehicle when the charge state satisfies the preset charge state.

[0155] The power supply device for the overhead crane provided in the embodiment of the present invention ensures that the overhead crane can operate stably under different power supply conditions by realizing intelligent management of the power supply to the overhead crane. When the track power supply is unstable, it switches to supercapacitor power supply in time, and ensures the reliability of power supply by real-time monitoring of the power status, thereby improving the safety and reliability of the operation of the overhead crane, optimizing energy usage, reducing the risk of system failure, and improving the overall operating efficiency.

[0156] The present invention also provides an overhead crane, comprising: a supercapacitor, a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and when the processor executes the program, the power supply method for the overhead crane as described above is implemented.

[0157] Figure 4 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 4 As 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 power supply method of the overhead travelling vehicle, the method comprising: supplying power to the overhead travelling vehicle by supplying power from the power supply line on the track through the first power supply; detecting the power supply parameters of the first power supply; determining the position of the overhead travelling vehicle when the power supply parameters do not meet the preset parameter conditions; determining the power supply source of the overhead travelling vehicle based on the position of the overhead travelling vehicle and the operation instructions received by the overhead travelling vehicle; determining the charge state of the supercapacitor when the power supply source of the overhead travelling vehicle is a supercapacitor; switching to the supercapacitor to supply power to the overhead travelling vehicle when the charge state meets the preset charge amount.

[0158] 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.

[0159] 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 power supply method for the overhead crane provided by the above-mentioned methods, which method includes: supplying power to the overhead crane by drawing power from the power supply line on the track through a first power supply; detecting the power supply parameters of the first power supply; when the power supply parameters do not meet the preset parameter conditions, determining the position of the overhead crane; based on the position of the overhead crane and the operating instructions received by the overhead crane, determining the power supply source of the overhead crane; when the power supply source of the overhead crane is a supercapacitor, determining the charge state of the supercapacitor; when the charge state meets the preset charge, switching to the supercapacitor to supply power to the overhead crane.

[0160] On the other hand, the present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to execute the power supply method for an overhead crane provided by the above-mentioned methods, the method comprising: supplying power to the overhead crane by supplying power from a power supply line on a track through a first power supply; detecting power supply parameters of the first power supply; determining the position of the overhead crane when the power supply parameters do not meet preset parameter conditions; determining a power supply source for the overhead crane based on the position of the overhead crane and the operating instructions received by the overhead crane; determining a charge state of the supercapacitor when the power supply source of the overhead crane is a supercapacitor; and switching to the supercapacitor to supply power to the overhead crane when the charge state meets the preset charge.

[0161] 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. Those of ordinary skill in the art may understand and implement it without creative effort.

[0162] 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.

[0163] 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 method for obtaining and supplying power to an overhead crane, characterized in that: A supercapacitor is arranged in the overhead travelling vehicle, and the method comprises: The first power supply is used to take power from the power supply line on the track to supply power to the overhead travelling vehicle; Detecting power supply parameters of the first power supply; When the power supply parameters do not meet the preset parameter conditions, determining the position of the overhead travelling crane; Determining a power supply source of the overhead crane based on the position of the overhead crane and the operation instruction received by the overhead crane; In the case where the power supply source of the overhead travelling vehicle is the supercapacitor, determining the charge state of the supercapacitor; When the charge state satisfies a preset charge amount, switching to the supercapacitor to supply power to the overhead travelling vehicle; The overhead travelling crane further includes a second power supply, and the determining of the power supply source of the overhead travelling crane based on the position of the overhead travelling crane and the operation instruction received by the overhead travelling crane includes: When the position of the overhead travelling crane is not the power supply switching point and it is determined based on the operation instruction received by the overhead travelling crane that the overhead travelling crane has not reached the task end point, determining that the power supply source of the overhead travelling crane is to take power from the power supply line on the track through the second power supply to supply power to the overhead travelling crane; The operation instruction received by the overhead crane is a static task operation instruction or a dynamic task operation instruction; the static task corresponding to the static task operation instruction is a task performed by the overhead crane according to a predetermined path and speed, and the dynamic task corresponding to the dynamic task operation instruction includes task interruption, emergency task or temporary scheduling; Determining a power supply source of the overhead traveling crane based on the position of the overhead traveling crane and the operation instruction received by the overhead traveling crane includes: When the operation instruction received by the overhead crane is a static task operation instruction, judging whether the overhead crane enters an abnormal power supply area based on the current position of the overhead crane, and if entering the abnormal power supply area, switching to supercapacitor power supply; When the operation instruction received by the overhead crane is a dynamic task operation instruction, the power supply is switched to super capacitor according to the task requirements and the current position of the overhead crane.

2. The method for obtaining and supplying power to an overhead crane according to claim 1, characterized in that: After switching to the supercapacitor to supply power to the overhead traveling vehicle, the method further includes: Continue to detect the power supply parameters of the first power supply; When the power supply parameters meet the preset parameter conditions, the first power supply is used to draw power from the power supply line on the track and then switched to the first power supply to supply power to the overhead travelling vehicle.

3. The method for obtaining and supplying power to an overhead travelling crane according to claim 1, characterized in that: After switching to the first power supply to supply power to the overhead travelling vehicle, the method further includes: The supercapacitor is charged by taking power from a power supply line on the track through the first power collector.

4. The method for obtaining and supplying power to an overhead travelling crane according to claim 1, characterized in that: The overhead travelling crane further includes a second power supply, and the determining of the power supply source of the overhead travelling crane based on the position of the overhead travelling crane and the operation instruction received by the overhead travelling crane includes: When the position of the overhead travelling crane is the power switching point and it is determined based on the operation instruction received by the overhead travelling crane that the overhead travelling crane has not reached the task end point, supplying power to the overhead travelling crane by taking power from the power supply line on the track through the second power supply; When the power supply parameter of the second power supply does not meet the preset parameter condition, it is determined that the power supply source of the overhead traveling crane is switched to the super capacitor to supply power to the overhead traveling crane.

5. The method for obtaining and supplying power to an overhead travelling crane according to claim 1, characterized in that: A soft start circuit is also provided in the overhead travelling vehicle, the first current collector is connected to the super capacitor via a rectifier, and the output end of the super capacitor is connected to the motion actuator of the overhead travelling vehicle via the soft start circuit; When receiving a signal for supplying power to the overhead travelling vehicle through the super capacitor, the soft start circuit controls the super capacitor to increase current to supply power to the motion actuator of the overhead travelling vehicle.

6. The method for obtaining and supplying power to an overhead travelling crane according to claim 5, characterized in that: The soft start circuit includes a power field effect transistor and a pulse width modulation circuit; The signal input end of the pulse width modulation circuit is connected to the control signal output end of the overhead crane, the signal output end of the pulse width modulation circuit is connected to the gate of the power field effect transistor, the pulse width modulation circuit sends a control signal to the gate of the power field effect transistor to adjust the gate voltage of the power field effect transistor to control the opening and closing of the power field effect transistor, the source of the power field effect transistor is connected to the output end of the super capacitor, and the drain of the power field effect transistor is connected to the motion actuator of the overhead crane.

7. A power supply device for an overhead crane, characterized in that: include: A power supply module, used to supply power to the overhead travelling crane by taking power from a power supply line on the track through a first power supply; A detection module, used to detect power supply parameters of the first power supply; A first processing module, used for determining the position of the overhead travelling crane when the power supply parameter does not meet the preset parameter condition; A second processing module, configured to determine a power supply source of the overhead travelling crane based on a position of the overhead travelling crane and an operation instruction received by the overhead travelling crane; A third processing module is used to determine the charge state of the supercapacitor when the power supply source of the overhead travelling vehicle is a supercapacitor; A switching module, used for switching to the supercapacitor to supply power to the overhead travelling vehicle when the charge state satisfies a preset charge state; The overhead travelling crane further includes a second power supply, and the determining of the power supply source of the overhead travelling crane based on the position of the overhead travelling crane and the operation instruction received by the overhead travelling crane includes: When the position of the overhead travelling crane is not the power supply switching point and it is determined based on the operation instruction received by the overhead travelling crane that the overhead travelling crane has not reached the task end point, determining that the power supply source of the overhead travelling crane is to take power from the power supply line on the track through the second power supply to supply power to the overhead travelling crane; The operation instruction received by the overhead crane is a static task operation instruction or a dynamic task operation instruction; the static task corresponding to the static task operation instruction is a task performed by the overhead crane according to a predetermined path and speed, and the dynamic task corresponding to the dynamic task operation instruction includes task interruption, emergency task or temporary scheduling; Determining a power supply source of the overhead traveling crane based on the position of the overhead traveling crane and the operation instruction received by the overhead traveling crane includes: When the operation instruction received by the overhead crane is a static task operation instruction, judging whether the overhead crane enters an abnormal power supply area based on the current position of the overhead crane, and if entering the abnormal power supply area, switching to supercapacitor power supply; When the operation instruction received by the overhead crane is a dynamic task operation instruction, the power supply is switched to super capacitor according to the task requirements and the current position of the overhead crane.

8. An overhead travelling crane, characterized in that: include: A supercapacitor, a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein when the processor executes the program, the method for obtaining and supplying power to an overhead crane as claimed in any one of claims 1 to 6 is implemented.

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 power supply method for the overhead traveling crane according to any one of claims 1 to 6 is implemented.

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