TWM591614U - Load monitoring system - Google Patents

Abstract

A load monitoring system for controlling a hoist device is provided. The load monitoring system includes a weight sensor, a control host and a remote controller. The weight sensor senses a weight of an object when the hoist device is carrying the object to provide a sensing signal. The remote controller provides setting parameters and transmits the setting parameters to the control host through wireless communication. The control host provides a determination result according to the setting parameters and the sensing signal, and controls the hoist device to carry the object according to the judgment result.

Description

Load monitoring system

The creation of this new type is about a load monitoring system, and especially about a load monitoring system suitable for lifting devices.

Generally speaking, current lifting devices (such as cranes, cranes, freight elevators, etc.) perform load protection by detecting the operating current value of the brake. The hoisting device will make the operating current value not exceed the rated current, so as to achieve load protection. However, the above-mentioned operating current value is subject to external electromagnetic interference, which reduces the correlation between the operating current value and the lifting weight, which in turn causes the load protection to malfunction.

In addition, the current lifting device can also get the weight of the object through the lifting scale. However, the crane scale can only know the weight of the object, and cannot take relevant safety measures because the weight of the object is too heavy.

This novel creation provides a load monitoring system that can provide a high degree of security.

The load monitoring system created by this new model is suitable for lifting devices. The lifting device is configured to carry objects. The load monitoring system includes a weight sensor, a remote controller and a control host. The weight sensor is installed on the lifting device. The weight sensor is configured to sense the weight of the object when the lifting device is carrying the object to provide a sensing signal. The remote controller is configured to provide setting parameters and transmit the setting parameters through wireless communication. The control host is coupled to the weight sensor. The control host is configured to provide a judgment result according to the set parameters and the sensing signal, and control the operation of the lifting device according to the judgment result.

Based on the above, the load monitoring system created by the new model will provide the setting parameters through the remote controller, and transmit the setting parameters to the control host through wireless communication. The control host will provide a judgment result according to the setting parameters and the sensing signal provided by the weight sensor, and control the operation of the lifting device according to the judgment result. This new creation can control the lifting device by remote control. In this way, the load monitoring system created by this new model can improve the operational safety.

In order to make the above-mentioned features and advantages of the creation of the new model more obvious and understandable, the embodiments are specifically described below and described in detail in conjunction with the accompanying drawings.

Please refer to FIG. 1, which is a system schematic diagram of a load monitoring system according to an embodiment of the present invention. In this embodiment, the load monitoring system 100 is suitable for monitoring the lifting device HTD. The lifting device HTD will transport objects OBT. The hoisting device HTD can be, for example, a crane, overhead crane, freight elevator or the like. In this embodiment, the load monitoring system 100 includes a weight sensor 110, a remote controller 120, and a control host 130. The weight sensor 110 is provided on the lifting device HTD. The weight sensor 110 senses the weight of the object OBT when the lifting device HTD transports the object OBT to provide a sensing signal SS. In the present embodiment, the weight sensor 110 is provided on the cable suspension wheel set (not shown) of the heavy device HTD. Therefore, when the lifting device HTD lifts the object OBT to move the object OBT away from the support (such as the ground or transportation vehicle), the weight sensor 110 is supported by the hanging wheels or ropes of the rope groove hanging wheel set The gravity is converted into the sensing signal SS. The gravity carried by the hanging wheels or ropes of the cable groove hanging wheel group has a very high positive correlation with the weight of the object OBT. The gravity of the hanging wheels or ropes of the cable groove hanging wheel group will not be affected by external electromagnetic interference and reduce the correlation between the operating current value and the lifting weight. Therefore, the weight sensor 110 of this embodiment can provide a more accurate sensing signal SS compared to the method of converting the torque or the operating current value of the brake. In this embodiment, the weight sensor 110 may be realized by a pin-type sensor. The weight sensor 110 may be implemented by other types of piezoelectric sensors.

In this embodiment, the remote controller 120 provides the setting parameter SP, and transmits the setting parameter SP through wireless communication. The remote controller 120 may be a portable device. Therefore, the convenience of use of the remote controller 120 can be improved. In this embodiment, the control host 130 is coupled to the weight sensor 110. The control host 130 communicates with the remote controller 120 by wireless communication. The control host 130 receives the sensing signal SS provided by the weight sensor 110. The control host 130 provides a judgment result DS according to the setting parameter SP and the sensing signal SS, and controls the operation of the hoisting device HTD according to the judgment result DS.

It is worth mentioning here that the load monitoring system 100 provides the setting parameter SP through the remote controller 120, and transmits the setting parameter SP to the control host 130 by wireless communication. The control host 130 provides a judgment result DS according to the setting parameter SP and the sensing signal SS, and controls the operation of the hoisting device HTD according to the judgment result DS. The load monitoring system 100 controls the lifting device HTD by remote control. In this way, the load monitoring system 100 can improve the operational safety of the lifting device HTD. In addition, the control host 130 also transmits the determination result DS to the remote controller 120 by wireless communication. Therefore, the user can learn the judgment result DS through the remote controller 120.

Further, the implementation details of the control host 130 will be described. In this embodiment, the control host 130 includes an alarm 131, a communication unit 132, and a microprocessor 133. The communication unit 132 receives the setting parameter SP provided by the remote controller 120 through wireless communication. The communication unit 132 may be a global system for mobile communication (GSM), a personal handy-phone system (PHS), a code division multiple access (CDMA) system, and a broadband code Wideband code division multiple access (WCDMA) system, long term evolution (LTE) system, global interoperability for microwave access (WiMAX) system, wireless fidelity (Wi-Fi) Fi) A component of signal transmission of a system, radio frequency (Radio frequency, RF), infrared (IR), or Bluetooth.

In this embodiment, the microprocessor 133 is coupled to the alarm 131 and the communication unit 132. The microprocessor 133 receives the sensing signal SS and obtains the object weight value of the object OBT through the sensing signal SS. The microprocessor 133 provides the judgment result DS according to the weight value of the object and the setting parameter SP. The control host 130 also controls the warning device 131 according to the judgment result DS to provide a warning signal corresponding to the judgment result DS. The microprocessor 133 may be, for example, a central processing unit (Central Processing Unit, CPU), or other programmable general-purpose or special-purpose processors, digital signal processors (DSP), and programmable control Devices, application specific integrated circuits (ASIC), programmable logic devices (Programmable Logic Device, PLD), or other similar devices or combinations of these devices, which can load and execute computer programs.

The control host 130 of this embodiment also includes a signal format converter 134. The signal format converter 134 is coupled between the microprocessor 133 and the weight sensor 110. The signal format converter 134 gains the sensing signal SS and converts the sensing signal SS from an analog signal format to a digital signal format. In this way, the judgment result DS will be more correct.

In this embodiment, the load monitoring system 100 includes a power switch 140. The lifting device HTD includes at least a brake M1 for lifting an object OBT. The power switch 140 is used to connect the power supply P to the brake M1. That is to say, the brake M1, the power switch 140 and the power P will form a power circuit. The power switch 140 may be realized by a relay, for example. The microprocessor 133 determines whether the weight value of the object is greater than the first set weight value of the set parameter SP to provide a determination result DS. When the judgment result DS indicates that the weight value of the object is greater than the first set weight value of the set parameter SP, the microprocessor 133 provides the first control signal CS1 for turning off the power switch 140. When the weight value of the object is greater than the first set weight value of the set parameter SP, the brake M1 cannot receive the power P and stops operating. Therefore, the lifting device HTD will immediately stop lifting the object OBT. In addition, the microprocessor 133 also controls the warning device 131 to provide a first warning signal. That is, when the judgment result DS indicates that the weight value of the object is greater than the first set weight value, the microprocessor 133 controls the lifting device HTD to stop lifting the object OBT, and controls the alarm 131 to provide a first warning signal. In this embodiment, the first warning signal may be at least one of warning light and warning sound. In this embodiment, the alarm 131 may be any form of light-emitting element, any form of buzzer, or a combination thereof.

When the judgment result DS indicates that the weight value of the object is greater than the second set weight value of the set parameter SP and less than or equal to the first set weight value, the microprocessor 133 controls the alarm 131 to provide a second alarm signal. The second set weight value is less than the first set weight value. The second warning signal may be at least one of a warning light and a warning sound. The second warning signal is different from the first warning signal. In addition, when the weight value of the object is greater than the second set weight value and less than or equal to the first set weight value, the microprocessor 133 does not provide the first control signal CS1 for turning off the power switch 140. That is to say, when the weight value of the object is greater than the second set weight value and less than or equal to the first set weight value, the microprocessor 133 controls the lifting device HTD to continue lifting the object OBT, and controls the alarm 131 to provide The second warning signal.

When the judgment result DS indicates that the weight value of the object is less than or equal to the second set weight value, the microprocessor 133 controls the lifting device HTD to continue lifting the object OBT, and controls the alarm 131 not to provide an alarm signal.

It should be noted that, based on design requirements, the number of set weight values of the set parameter SP can be set by the remote controller 120. The number of set weight values created by the present invention may be one or more, and is not limited to the first set weight value and the second set weight value in this embodiment.

It should also be noted that the control host 130 of this embodiment may be installed in the hoisting device HTD. Therefore, the power switch 140 can be provided to the control host 130. The arrangement of the control host 130, the power switch 140, and the hoisting device HTD created by the novel is not limited to this embodiment.

In some embodiments, the control host 130 provides the weight value of the object to an external display unit (not shown) through wireless communication, so that the user can learn the weight value of the object through the external display unit. The external display unit may be, for example, any type of liquid crystal display (LCD), any type of light-emitting diode (LED) display, or a display device that provides a display function.

Next, the implementation details of the remote controller will be further explained. Please refer to FIG. 1 and FIG. 2 at the same time. FIG. 2 is a schematic diagram of a remote controller according to an embodiment of the present invention. In this embodiment, the remote controller 120 includes an operation unit 121, a communication unit 122, and a display unit 123. The operation unit 121 is operated to establish the setting parameter SP. The communication unit 122 transmits the setting parameter SP by wireless communication and receives the judgment result DS from the control host 130. The display unit 123 displays a display message related to the judgment result DS and a display message related to the setting parameter SP. The display unit 123 may be, for example, any type of liquid crystal display (LCD), any type of light-emitting diode (LED) display, or a display device that provides a display function.

In this embodiment, the operation unit 121 can be operated by the user to set the setting parameter SP. Under the user's operation, the setting parameter SP will be transmitted to the control host 130 via the communication unit 122. In addition, the setting parameter SP may also be provided to the display unit 123 so that the display unit 123 displays a display message related to the setting parameter SP. The user can know the corresponding content of the setting parameter SP through the display message displayed by the display unit 123. The communication unit 122 also receives the judgment result DS from the control host 130 and provides the judgment result DS to the display unit 123. In this way, the user can know the judgment result DS through the display message displayed by the display unit 123.

Please also refer to FIG. 3, which is a system schematic diagram of a load monitoring system according to another embodiment of the present invention. In this embodiment, the load monitoring system 200 includes a weight sensor 210, a remote controller 220, a control host 230, and a power switch 240. The cooperative operation between the weight sensor 210, the remote controller 220, the control host 230, and the power switch 240 can be sufficiently taught by the embodiment of FIG. 1, so it will not be repeated here. The control host 230 includes an alarm 231, a communication unit 232, a microprocessor 233, and a signal format converter 234. Similarly, the coordinated operation between the alarm 231, the communication unit 232, the microprocessor 233, and the signal format converter 234 can also be sufficiently taught by the embodiment of FIG. 1, and therefore will not be repeated here.

In this embodiment, the hoisting device HTD includes brakes M2 and M3 in addition to brake M1. The lifting device HTD will lift the object OBT based on the operation of the brake M1. The hoisting device HTD will lower the hoisted object OBT based on the operation of the brake M2. The hoisting device HTD will move the hoisted object OBT horizontally based on the operation of the brake M3.

In this embodiment, the remote controller 220 provides the operation signal OS to the control host 230 by wireless communication. The operation signal OS can be generated by operating the remote controller 220. The microprocessor 233 provides second control signals CS2_1, CS2_2, CS2_3 according to the operation signal OS to control the brakes M1, M2, M3 of the hoisting device HTD. For example, the second control signal CS2_1 can be used to control the brake M1, so that the hoisting device HTD hoists the object OBT in the first direction. The second control signal CS2_2 can be used to control the brake M2, so that the hoisting device HTD lowers the hoisted object OBT in the second direction. The second direction is opposite to the first direction. The second control signal CS2_3 can be used to control the brake M3 so that the lifting device HTD is horizontally lifted by the moving object OBT in the third direction or in a direction opposite to the third direction. The second direction is perpendicular to the third direction. In this way, the user can operate the remote controller 220 to control the lifting device HTD to carry the object OBT by remote control.

It should be noted that, for ease of explanation, the number of brakes in this embodiment is three as an example. The number of brakes created by the present invention can be multiple. This new creation is not limited to this embodiment.

In this embodiment, the control host 230 further includes a storage device 235. The microprocessor 233 sequentially generates multiple load data according to the multiple operations of the hoisting device HTD, and sequentially stores the multiple load data to the storage device 235. In addition, the microprocessor 233 also integrates the plurality of load data stored in the storage device 235 to generate a load history, and provides a report corresponding to the load history.

Here is an example to illustrate that when the lifting device HTD transports the first object, the microprocessor 233 will learn the weight value of the first object according to the sensing signal SS, and use the weight value of the first object as the load data, and The load data corresponding to the weight value of the first object is stored in the storage device 235. When the lifting device HTD transports the second object, the microprocessor 233 will know the object weight value of the second object, and use the object weight value of the second object as the load data, and the value corresponding to the object weight value of the second object The load data is stored in the storage device 235, and so on. The storage device 235 stores multiple load data of multiple objects (including at least the first object and the second object). The processor 233 integrates the plurality of load data stored in the storage device 235 to generate a load history, thereby generating a weight quality assurance report corresponding to the load history. It should be understood that the control host 230 transmits the above weight and quality assurance report to the remote controller 220. The user will know the weight quality assurance report through the remote controller 220.

As another example, the load history will reflect at least one of the number, weight, and usage time of the object OBT carried by the hoisting device HTD. The microprocessor 233 will create an operation report according to the load history. The operation report can be used to provide maintenance suggestions or audit the user for improper operation.

Please refer to FIG. 3 and FIG. 4 at the same time. FIG. 4 is a schematic diagram of an operation situation of a load monitoring system and a lifting device according to an embodiment of the present invention. In this embodiment, the hoisting device HTD is an overhead crane (the creation of this new type is not limited to this). The user UR can establish the setting parameter SP through the remote controller 220 and transmit the setting parameter SP to the control host 230. When the lifting device HTD lifts the object OBT in the direction D1, the weight sensor 210 senses the weight of the object OBT to provide the sensing signal SS. When the control host 230 determines that the weight value of the object is greater than the first set weight value according to the set parameter SP and the sensing signal SS, it stops the operation of the lifting device HTD and provides a first warning signal. When the control host 230 determines that the weight value of the object is less than or equal to the first set weight value, it does not stop the operation of the lifting device HTD. In some embodiments, when the control host 230 determines that the weight value of the object is greater than the second set weight value and less than or equal to the first set weight value, a second warning signal is provided. The second set weight value is less than the first set weight value. The second warning signal is different from the first warning signal.

In addition, the user UR can provide the operating signal OS through the remote controller 220. The control host 230 controls the lifting device HTD to transport the object OBT in the directions D1, D2, D3, and D4 according to the operation signal OS.

In summary, the load monitoring system created by the new model will provide the setting parameters through the remote controller, and transmit the setting parameters to the control host through wireless communication. The control host will provide a judgment result according to the setting parameters and the sensing signal provided by the weight sensor, and control the operation of the lifting device according to the judgment result. This new creation can control the lifting device by remote control. The load monitoring system can remotely monitor the lifting device. In this way, the load monitoring system created by this new model can improve the operational safety. In addition, the load monitoring system can also provide reports corresponding to the load history. In this way, the user can obtain at least one of the weight quality assurance report and the operation report through the remote controller 220.

Although the new creation has been disclosed as above with examples, it is not intended to limit the creation of the new creation. Anyone with ordinary knowledge in the technical field of the subject can make some changes and without departing from the spirit and scope of the creation of the new creation. Retouching, so the scope of protection of this new creation shall be subject to the scope defined in the appended patent application.

100, 200: load monitoring system 110, 210: weight sensor 120, 220: remote controller 121: Operating unit 122: Communication unit of remote controller 123: display unit 130, 230: control host 131, 231: Warning device 132, 232: control unit communication unit 133, 233: Microprocessor 134, 234: Signal format converter 140, 240: power switch 235: storage device CS1: the first control signal CS2_1, CS2_2, CS2_3: second control signal D1, D2, D3, D4: direction DS: judgment result HTD: Lifting device M1, M2, M3: brake OBT: Object OS: Operation signal P: Power SP: Set parameters SS: Sensing signal UR: user

FIG. 1 is a system schematic diagram of a load monitoring system according to an embodiment of the present invention. FIG. 2 is a schematic diagram of a remote controller device according to an embodiment of the present invention. FIG. 3 is a system schematic diagram of a load monitoring system according to another embodiment of the invention. FIG. 4 is a schematic diagram of an operation situation of a load monitoring system and a lifting device according to an embodiment of the novel creation.

100: load monitoring system

110: Weight sensor

120: Remote controller

130: control host

131: Warning device

132: Communication unit

133: Microprocessor

134: Signal format converter

140: power switch

CS1: the first control signal

DS: judgment result

HTD: Lifting device

M1: brake

OBT: Object

P: Power

SP: Set parameters

SS: Sensing signal

Claims (11)

A load monitoring system suitable for a lifting device, wherein the lifting device is configured to carry an object, the load monitoring system includes: A weight sensor is provided on the lifting device, and is configured to sense the weight of the object when the lifting device carries the object to provide a sensing signal; A remote controller configured to provide a set parameter and transmit the set parameter by wireless communication; and A control host, coupled to the weight sensor, is configured to provide a judgment result based on the setting parameter and the sensing signal, and control the operation of the hoisting device based on the judgment result. The load monitoring system as described in item 1 of the patent application scope, wherein the weight sensor is provided in the cable groove hanging wheel group of the lifting device. The load monitoring system as described in item 1 of the patent application scope, wherein the weight sensor is a shaft pin sensor. The load monitoring system as described in item 1 of the patent application scope also includes: A power switch configured to connect a power source to a plurality of brakes of the lifting device for lifting a first brake of the object, wherein when the power switch is turned off, the lifting device stops lifting The object. The load monitoring system as described in item 4 of the patent application scope, wherein the control host includes: A warning device; A communication unit configured to receive the setting parameter by wireless communication; and A microprocessor, coupled to the alarm and the communication unit, is configured to receive the sensing signal, obtain an object weight value of the object from the sensing signal, and according to the object weight value and the setting parameter Provide the judgment result, when the judgment result indicates that the weight value of the object is greater than a first setting weight value of the setting parameter, provide a first control signal for turning off the power switch, and control the alarm to provide a first A warning signal. The load monitoring system as described in item 5 of the patent application scope, wherein when the judgment result indicates that the weight value of the object is greater than a second set weight value of the set parameter and less than or equal to the first set weight value, the control host It is also configured to control the warning device to provide a second warning signal different from the first warning signal. The load monitoring system as described in item 5 of the patent application scope, wherein the control host is further configured to provide the judgment result to the remote controller via the communication unit. The load monitoring system as described in item 5 of the patent application scope, wherein the control host further includes: A signal format converter, coupled between the microprocessor and the weight sensor, is configured to gain the sense signal and convert the sense signal from an analog signal format to a digital signal format. The load monitoring system as described in item 5 of the patent application scope, in which: The remote controller is also configured to provide an operation signal to the control host by wireless communication, The microprocessor is also configured to provide a plurality of second control signals according to the operation signal to control the brakes. The load monitoring system according to item 5 of the patent application scope, wherein the control host further includes a storage device, wherein the storage device is coupled to the microprocessor, wherein the microprocessor is further configured to depend on the lifting device Generate multiple load data in sequence, store the load data in the storage device in sequence, integrate the load data stored in the storage device to generate a load history, and provide a load history corresponding to the load history report. The load monitoring system as described in item 1 of the patent application scope, wherein the remote controller includes: An operating unit configured to be operated to set the setting parameter; A communication unit configured to transmit the setting parameter by wireless communication to transmit and receive the judgment result from the control host; and A display unit is configured to display a display message related to the judgment result and a display message related to the setting parameter.

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