KR102417244B1 - Positionable wireless emergency switch system - Google Patents

Abstract

The present invention relates to a movable wireless emergency switch system. An objective of the present invention is to provide a wireless emergency switch system which can move to a position neat a worker and can be attached to and detached from all areas regardless of the materials (conductors, insulators, magnetic substances, and non-magnetic substances) of industrial equipment. To achieve the objective, the movable wireless emergency switch system comprises: an emergency switch unit having a battery, an attaching unit receiving power from the battery to be attached to and detached from the surface of industrial equipment, a contact unit switching on and off power from the battery by a button push operation of a worker, and a transmission unit transmitting on and off states of the contact unit in wireless signals; and an equipment stop unit having a reception unit receiving on and off state signals from the transmission unit of the emergency switch unit, a control unit receiving on and off state signals from the reception unit to determine whether to stop the industrial equipment, and an output unit outputting an equipment stop signal for stopping the operation of the industrial equipment by a control signal of the control unit.

Description

Positionable wireless emergency switch system {Positionable wireless emergency switch system}

The present invention relates to a positionable wireless emergency switch system.

In general logistics systems, belt conveyors are used for rapid transport and transport of various items. The belt conveyor is equipped with a driving unit including a motor and a speed reducer, a rubber belt, and a number of rollers to support the rubber belt and move the article, and may also include an emergency switch capable of stopping in an emergency.

On the other hand, a conveyor system that is continuously operated requires periodic inspection and repair, and malfunctions are frequently occurring. In such a conveyor system, emergency stop switches are installed in order to prevent the occurrence of accidents by workers, such as the occurrence of a sudden dangerous situation during repair work, or the occurrence of problems due to abnormal operation of the equipment.

For example, the emergency stop switch according to the prior art includes a body part having a switch electrically connected to the conveyor system and passing through the switch of the body part in the lateral direction, and short-circuits the power supply of the conveyor system to a rotating shaft rotating at the center of the switch. It has a lever that lets you do it. This conventional emergency stop switch for a conveyor system is attached to the periphery of the conveyor system at intervals of approximately 10 meters. Accordingly, when the operator determines that an emergency stop of the conveyor system is necessary, the operator operates the emergency stop switch approximately 10 meters away.

However, when the operator is pinched or squeezed in the conveyor system, even if the distance between the operator and the emergency switch is only about 1 meter apart, there is a problem in that the operator is difficult to actually operate the emergency switch.

The above-described information disclosed in the background technology of the present invention is only for improving the understanding of the background of the present invention, and thus may include information that does not constitute the prior art.

An object to be solved by the present invention is to provide a wireless emergency switch system that can be moved to a location near a worker and can be detached from any area regardless of the material (conductor, insulator, magnetic material, non-magnetic material) of industrial equipment.

A position-movable wireless emergency switch system according to the present invention comprises: a battery; an attachment part detachable on the surface of industrial equipment by receiving power from the battery; an emergency switch unit having a transmitting unit that transmits an on/off state of the contact unit as a wireless signal; and a receiver for receiving an on-off state signal from the transmitter of the emergency switch unit, a controller for receiving an on-off state signal from the receiver to determine whether to stop industrial equipment, and equipment for stopping the operation of industrial equipment by the control signal of the controller It may include an equipment stop having an output for outputting a stop signal.

The attachment portion of the emergency switch includes a base member on which the contact part is seated, a first insulating layer provided on a surface opposite to a surface of the base member on which the contact part is seated, and a first electrode in the form of a flat plate provided on one side of the first insulating layer; , a second electrode in the form of a flat plate provided on the other region on the first insulating layer and spaced apart from the first electrode, and a second insulating layer provided to cover the first and second electrodes, the first electrode from the battery A positive voltage is applied to and a negative voltage is applied to the second electrode from the battery, so that the polarity opposite to the first electrode is charged on one surface of the industrial equipment, and the polarity opposite to the second electrode is charged on the other surface of the industrial equipment As much as possible, the attachment part of the emergency switch can be attached to the surface of the industrial equipment.

The surface of the industrial equipment to which the attachment part of the emergency switch is attached may be an insulator, a conductor, a magnetic material, or a non-magnetic material.

The emergency switch unit may transmit unique number information to the equipment stop unit together with the on/off state signal.

The emergency switch unit may transmit an on signal to the equipment stop unit before the operator's button press operation, and transmit an off signal to the equipment stop unit after the operator's button press operation.

The present invention provides a wireless emergency switch system that can be moved to the vicinity of a worker and can be detached from any area regardless of the material (conductor, insulator, magnetic material, non-magnetic material) of industrial equipment.

1 is a block diagram illustrating an exemplary repositionable wireless emergency switch system in accordance with the present invention.
2A and 2B are cross-sectional views illustrating an exemplary emergency switch unit in an exemplary repositionable wireless emergency switch system according to the present invention.
3A and 3B are plan views illustrating exemplary attachments of an exemplary emergency switch unit in an exemplary repositionable wireless emergency switch system in accordance with the present invention;
4A and 4B are cross-sectional views illustrating an exemplary emergency switch unit in an exemplary repositionable wireless emergency switch system according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention is provided to more completely explain the present invention to those of ordinary skill in the art, and the following examples may be modified in various other forms, and the scope of the present invention is limited to the following examples It is not limited. Rather, these examples are provided so that this disclosure will be more thorough and complete, and will fully convey the spirit of the invention to those skilled in the art.

In addition, in the following drawings, the thickness or size of each layer is exaggerated for convenience and clarity of description, and the same reference numerals in the drawings refer to the same elements. As used herein, the term “and/or” includes any one and all combinations of one or more of those listed items. In addition, in the present specification, "connected" means not only when member A and member B are directly connected, but also when member A and member B are indirectly connected with member C interposed between member A and member B. do.

The terminology used herein is used to describe specific embodiments, not to limit the present invention. As used herein, the singular form may include the plural form unless the context clearly dictates otherwise. Also, as used herein, “comprise, include” and/or “comprising, including” refer to the referenced shapes, numbers, steps, actions, members, elements, and/or groups thereof. It specifies the presence and does not exclude the presence or addition of one or more other shapes, numbers, movements, members, elements and/or groups.

Although the terms first, second, etc. are used herein to describe various members, parts, regions, layers and/or parts, these members, parts, regions, layers, and/or parts are limited by these terms so that they It is self-evident that These terms are used only to distinguish one member, component, region, layer or portion from another region, layer or portion. Accordingly, a first member, component, region, layer, or portion described below may refer to a second member, component, region, layer or portion without departing from the teachings of the present invention.

Space-related terms such as “beneath”, “below”, “lower”, “above”, and “upper” refer to an element or feature shown in the drawing It may be used to facilitate understanding of other elements or features. These space-related terms are for easy understanding of the present invention according to various process conditions or usage conditions of the present invention, and are not intended to limit the present invention. For example, if an element or feature in a figure is turned over, an element or feature described as "below" or "below" becomes "above" or "above". Accordingly, "below" is a concept encompassing "above" or "below".

In addition, the control unit (controller) and/or other related devices or components according to the present invention may be implemented using any suitable hardware, firmware (eg, application specific semiconductor), software, or a suitable combination of software, firmware and hardware. can For example, various components of a control unit (controller) and/or other related devices or parts according to the present invention may be formed on one integrated circuit chip or on separate integrated circuit chips. In addition, various components of the control unit (controller) may be implemented on a flexible printed circuit film, a tape carrier package, a printed circuit board, or may be formed on the same substrate as the control unit (controller). In addition, various components of the control unit (controller), in one or more computing devices, may be processes or threads executing in one or more processors, which execute computer program instructions to perform various functions mentioned below. and interact with other components. The computer program instructions are stored in a memory that can be executed in a computing device using a standard memory device, such as, for example, a random access memory. The computer program instructions may also be stored in other non-transitory computer readable media such as, for example, a CD-ROM, flash drive, and the like. In addition, those skilled in the art related to the present invention will know that the functions of various computing devices are combined with each other, integrated into one computing device, or the functions of a specific computing device are one or more other computing devices without departing from the exemplary embodiments of the present invention. It should be recognized that they can be distributed among

For example, the control unit (controller) according to the present invention is usually composed of a central processing unit, a mass storage device such as a hard disk or a solid state disk, a volatile memory device, an input device such as a keyboard or mouse, and an output device such as a monitor or printer. It can be run on a commercial computer of

1 is a block diagram illustrating an exemplary repositionable wireless emergency switch system 100 in accordance with the present invention.

In the example shown in FIG. 1 , an exemplary position-movable wireless emergency switch system 100 according to the present invention may include an emergency switch unit 110 , a wired/wireless network 120 , and an equipment stop unit 130 . can Although only one emergency switch unit 110 is shown in the drawing, the emergency switch unit 110 is assigned a unique number, and a plurality of emergency switch units 110 may be provided.

The emergency switch unit 110 may include a battery 111 , an attachment unit 112 , a contact unit 113 , and a transmission unit 114 . The battery 111 may include a primary battery or a rechargeable secondary battery. In some examples, the battery 111 may include a DC power supply (also referred to as a DC adapter) that converts AC power into DC power and outputs the DC power. In some examples, the battery 111 may be charged by itself by a piezoelectric charger that is self-generated by vibration or vibration of industrial equipment.

The attachment part 112 may receive DC power from the battery 111 to be detachably attached to the surface of the industrial equipment. Here, industrial equipment is a concept including, for example, a conveyor system or a building or structure in which a conveyor system is installed. Thus, industrial equipment may also include concrete/cement columns or floors.

In some examples, when the power of the battery 111 is supplied to the attachment part 112 , the emergency switch part 110 is attached to the surface of the industrial equipment, and when the power of the battery 111 is cut off from the attachment part 112 , the emergency switch The portion 110 may be separated from the surface of the industrial equipment. In some examples, whether power is supplied to the attachment part 112 may be determined by an operator's operation (button operation). In some examples, a DC-DC boosting circuit that boosts the voltage of the battery 111 to about 500V to about 5000V and provides it to the attachment part 112 may be further included between the battery 111 and the attachment part 112 . have. In some examples, the step-up circuit may include a DC-DC step-up converter, a DC-DC boost converter, a DC-DC buck converter, or the like. The polarization phenomenon is more likely to occur in the first and second electrodes and industrial equipment by such a high voltage. In some examples, attachment 112 may include an electromagnet or permanent magnet. The structure and principle of the attachment part 112 will be described in detail again below.

The contact unit 113 may turn on/off power from the battery 111 by a button press operation of an operator. In some examples, in a normal state (no button press operation is performed), the contact may remain on. In some examples, in a locked state (performing a button press operation), the contact may maintain an off state. The structure and principle of the contact unit 113 will be described again below.

The transmitter 114 may convert the on/off state of the contact unit 113, for example, the on or off state, into a wireless signal and transmit it to the wired/wireless network 120 and/or the equipment stop unit 130 . .

The wired/wireless network 120 may include Wi-Fi, Bluetooth, Zigbee, 4G, or 5G communication networks. In this way, the transmitter 114 of the wireless switch unit 110 may be connected to the wired/wireless network 120 by a Wi-Fi communication method, a Bluetooth communication method, a Zigbee communication method, a 4G communication method, or a 5G communication method. In some examples, the wired/wireless network 120 may also be connected to the receiver 131 of the equipment stop unit 130 by a Wi-Fi communication method, a Bluetooth communication method, a Zigbee communication method, a 4G communication method, or a 5G communication method. In some examples, the wired/wireless network 120 may be connected to the equipment stop unit 130 through a wired communication network.

The equipment stop unit 130 may include a receiving unit 131 , a control unit 132 , and an output unit 133 . The receiver 131 may receive an on/off state signal from the transmitter 114 of the emergency switch 110 . In some examples, the receiver 131 may receive an on-state signal or an off-state signal from the transmitter 114 of the emergency switch 110 through the wired/wireless network 120 .

The controller 132 may receive an on/off state signal from the receiver 131 to determine whether to stop the industrial equipment. In some examples, the control unit 132 determines to continue operating the industrial equipment upon receiving the status signal from the receiving unit 131 . In some examples, the controller 132 determines to stop the industrial equipment when receiving an off-state signal from the receiver 131 . In some examples, the controller 132 transmits a driving signal to the output unit 133 when it is decided to operate the industrial equipment, and transmits a stop signal to the output unit 133 when it is decided to stop the industrial equipment.

The output unit 133 outputs an equipment stop signal for stopping the operation of the industrial equipment according to a control signal (eg, a stop signal) of the control unit 132 . In some examples, the output unit 133 outputs a stop signal to the power supply unit responsible for power of the industrial equipment, so that the power supply unit does not apply power to the industrial equipment. Accordingly, the operation of the industrial equipment may be stopped by the output signal of the output unit 133 . For example, the output unit 133 may output a stop signal to a power supply unit of a driving motor that operates the conveyor belt to stop the operation.

In some examples, the emergency switch unit 110 may transmit the unique number information to the equipment stop unit 130 together with the on-off state signal. Accordingly, the manager of the equipment stop unit 130 can quickly determine at which position the emergency switch unit 110 is operated, or whether there is an abnormality in the power of the emergency switch unit 110 at any position. Of course, for this purpose, the control unit 132 may transmit various monitoring results to the server computer for the administrator.

In this way, the present invention can provide a wireless emergency switch system 100 that can be moved to the vicinity of the operator and can be detached from any area regardless of the material (conductor, insulator, magnetic material, non-magnetic material) of industrial equipment. have.

2A and 2B are cross-sectional views illustrating an exemplary emergency switch unit 110 in an exemplary repositionable wireless emergency switch system 100 according to the present invention, and FIGS. 3A and 3B are exemplary positions according to the present invention. It is a plan view showing an exemplary attachment portion 112 of an exemplary emergency switch portion 110 of the movable wireless emergency switch system 100 .

Exemplary emergency switch unit 110 according to the present invention is provided with a battery 111 (not shown), a contact unit 113, a spring 116 and a transmitter 114 (not shown) in a housing 115, A push button 117 for operating the contact portion 113 is provided on the upper portion of the housing 115, and an attachment portion ( 112) is provided.

In some examples, before pressing the button 117, the contact portion 113 is connected by the elastic force of the spring 116 (the upper and lower contact portions are connected to each other) to maintain an on state, and the transmitter 114 is in this on state transmit a signal In some examples, when the button 117 is pressed, the spring 116 is pressed while the contact portion 113 is separated to maintain an off state, and the transmitter 114 transmits such an off state signal.

In some examples, the attachment portion 112 of the emergency switch unit 110 includes a base member 1121 , a first insulating layer 1122 , a first electrode 1123 , a second electrode 1124 , and a second insulating layer ( 1125) may be included. The base member 1121 has a flat plate shape and may include an insulated metal plate, a plastic plate, or a ceramic plate. The housing 115 , the contact part 113 , the spring 116 , etc. may be directly mounted on the upper surface of the base member 1121 .

The first insulating layer 1122 may be provided on the lower surface of the base member 1121 . The first insulating layer 1122 may include a conventional insulating resin or insulating ceramic. In some examples, the first insulating layer 1122 is directly attached to the lower surface of the base member 1121 in the form of an insulating resin film, or an insulating ceramic is deposited on the lower surface of the base member 1121 by aerosol deposition, plasma spray, or the like. can be coated.

The first electrode 1123 may be provided in the form of a flat plate on one side of the first insulating layer 1122 . In some examples, the first electrode 1123 may be provided in the form of a half-moon plate as shown in FIG. 3A or a plurality of first electrodes 1123 may be provided in the form of a fan as shown in FIG. 3B . In some examples, the first electrode 1123 may be copper or aluminum. In some examples, the thickness of the first electrode 1123 may be about 1 μm to about 1000 μm.

The second electrode 1124 may be spaced apart from the first electrode 1123 in the other region on the first insulating layer 1122 to be provided in the form of a flat plate. In some examples, the second electrode 1124 may be provided in the form of a half-moon plate as shown in FIG. 3B or a plurality of the second electrodes 1124 may be provided in the form of a fan as shown in FIG. 3B . In some examples, the second electrode 1124 may be conventional copper or aluminum. In some examples, the thickness of the second electrode 1124 may be about 1 μm to about 1000 μm.

The second insulating layer 1125 may cover the first and second electrodes 1123 and 1124 . The second insulating layer 1125 may include a conventional insulating resin or insulating ceramic. In some examples, the second insulating layer 1125 is directly attached to the first insulating layer 1122 in the form of an insulating resin film, or an insulating ceramic is deposited on the first insulating layer 1122 by aerosol deposition, plasma spray, or the like. By being coated, the first and second electrodes 1123 and 1124 may be completely covered.

Meanwhile, the operation of the attachment part 112 is as follows.

By pressing an operation button (not shown) in a state in which the attachment part 112 of the emergency switch part 110 is in contact with industrial equipment (or various attachment targets), the battery 111 is added to the first electrode 1123 as an example. A DC voltage is applied and, for example, a negative DC voltage is applied from the battery 111 to the second electrode 1124 .

Then, the polarity opposite to the first electrode 1123 (for example, negative polarity) on one surface of the industrial equipment is charged and the polarity opposite to the second electrode 1124 on the other surface of the industrial equipment (for example, positive polarity) is charged. Accordingly, attractive force is generated on the positive first electrode 1123 and the surface of the negatively charged industrial equipment, and the negative second electrode 1124 and the positively charged surface of the industrial equipment generate attractive force, eventually The attachment part 112 of the emergency switch part 110 may be firmly attached to the surface of the industrial equipment.

This attachment action occurs regardless of the material of the industrial equipment. That is, the surface material of the industrial equipment to which the attachment part 112 of the emergency switch part 110 is attached may be an insulator, a conductor, a magnetic material, and/or a non-magnetic material. For example, when the attachment portion 112 is a permanent magnet or an electromagnet, the surface of the industrial equipment must be a conductor or a magnetic material. In other words, British magnets or electromagnets are not attached to areas where the surface material of industrial equipment is insulator or non-magnetic. However, by using the plus-minus charging principle as in the present invention, the emergency switch unit 110 can be attached to any area regardless of the material of the industrial equipment.

Of course, in the present invention, when the power of the battery 111 supplied to the first and second electrodes 1123 and 1124 is cut off, the above-described large power is lost, so that the emergency switch unit 110 can be easily separated from the industrial equipment. can

In this way, the present invention can provide a wireless emergency switch system 100 that can be moved to the vicinity of the operator and can be detached from any area regardless of the material (conductor, insulator, magnetic material, non-magnetic material) of industrial equipment. have.

4A and 4B are cross-sectional views illustrating an exemplary emergency switch unit 110 in an exemplary repositionable wireless emergency switch system 100 according to the present invention.

4A and 4B, the emergency switch unit 110 transmits the ON signal of the contact unit 113 to the equipment stop unit 130 before the operator's button 117 pressing operation, and the operator's button ( 117) After the pressing operation, the OFF signal of the contact unit 113 may be transmitted to the equipment stop unit 130 as the OFF signal. In some examples, in the present invention, industrial equipment can be operated while the main contact (b contact: Normally Close-usually connected (close), and disconnected when the switch is operated) is on, and the main contact ( b) in the off state, it may be impossible to operate industrial equipment. In some examples, in the present invention, the operation of industrial equipment is possible in the ON state when the main contact (a contact: Normally Open-normally not connected (open) is connected when the switch operates), the main It may be impossible to operate industrial equipment when the contact (contact a) is off.

What has been described above is only one embodiment for implementing an exemplary position-movable wireless emergency switch system according to the present invention, and the present invention is not limited to the above-described embodiment, but as claimed in the claims below. Likewise, without departing from the gist of the present invention, it will be said that the technical spirit of the present invention exists to the extent that various modifications can be made by anyone with ordinary knowledge in the field to which the invention pertains.

100; Positionable wireless emergency switch system
110; emergency switch unit 111; battery
112; attachment 1121; Base
1122; first insulating layer (dielectric layer) 1123; first electrode
1124; a second electrode 1125; 2nd insulating layer (dielectric layer)
113; contact portion 114; transmitter
115; housing 116; spring
117; button 120; wired and wireless network
130; equipment stop 131; receiver
132; control unit 133; output

Claims (5)

A battery, an attachment part that can be detached from the surface of industrial equipment by receiving power from the battery, a contact part that turns on/off power from the battery by a button operation of an operator, and a transmitter that transmits the on-off state of the contact part as a wireless signal an emergency switch unit having; and
A receiver that receives an on-off state signal from the transmitter of the emergency switch unit, a controller that receives an on-off state signal from the receiver to determine whether to stop industrial equipment, and equipment stop that stops the operation of industrial equipment by the control signal of the controller an equipment stop having an output for outputting a signal;
The attachment part of the emergency switch includes a base member on which the contact part is seated, a first insulating layer provided on a surface opposite to a surface of the base member on which the contact part is seated, and a first electrode in the form of a flat plate provided on one side of the first insulating layer; , A second electrode in the form of a flat plate provided on the other region on the first insulating layer and spaced apart from the first electrode, and a second insulating layer provided to cover the first and second electrodes,
A positive voltage is applied to the first electrode from the battery and a negative voltage is applied to the second electrode from the battery, so that the polarity opposite to the first electrode is charged on one surface of the industrial equipment, and the second electrode and the second electrode on the other surface of the industrial equipment A positionable wireless emergency switch system, wherein opposite polarities are charged so that an attachment portion of the emergency switch portion is attached to a surface of an industrial equipment. delete The method of claim 1,
The surface of the industrial equipment to which the attachment part of the emergency switch is attached is an insulator, a conductor, a magnetic material or a non-magnetic body, and a positionable wireless emergency switch system. The method of claim 1,
The emergency switch unit transmits the unique number information to the equipment stop unit along with the on/off status signal, a positionable wireless emergency switch system. The method of claim 1,
The emergency switch unit transmits an on signal to the equipment stop unit before the operator's button press operation, and transmits an off signal to the equipment stop unit after the operator presses the button.

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