KR20130103890A - Control system and method for industrial apparatus using wireless remote controller having emergency channel - Google Patents

Control system and method for industrial apparatus using wireless remote controller having emergency channel Download PDF

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Publication number
KR20130103890A
KR20130103890A KR1020120024890A KR20120024890A KR20130103890A KR 20130103890 A KR20130103890 A KR 20130103890A KR 1020120024890 A KR1020120024890 A KR 1020120024890A KR 20120024890 A KR20120024890 A KR 20120024890A KR 20130103890 A KR20130103890 A KR 20130103890A
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South Korea
Prior art keywords
wireless
channel
frequency
wireless remote
signal
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KR1020120024890A
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Korean (ko)
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이한우
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(주)도성산업기계
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Priority to KR1020120024890A priority Critical patent/KR20130103890A/en
Publication of KR20130103890A publication Critical patent/KR20130103890A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H04Q9/04—Arrangements for synchronous operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2209/00—Arrangements in telecontrol or telemetry systems
    • H04Q2209/40—Arrangements in telecontrol or telemetry systems using a wireless architecture

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Selective Calling Equipment (AREA)

Abstract

The present invention discloses a wireless control system and control method for industrial equipment using a wireless remote control. More specifically, in a control system including a plurality of wireless remote control and a plurality of industrial equipment having a receiving device for receiving a signal of the plurality of wireless remote control, respectively, wherein the wireless remote control is a frequency generator and the frequency generator A wireless communication unit including a wireless transmission unit configured to transmit the command data signal on a radio frequency generated by the control unit; The receiver includes a mode selection means for selecting between a normal mode and an emergency mode.
According to the present invention, if one radio remote control fails, another radio remote control can be used as a substitute for simple operation even without any special knowledge. Therefore, it is possible to prevent the work delay due to the after-sales service of the failed wireless remote control and the cost loss and productivity decrease. You can also save money by not having to purchase a mast remote.

Description

Control system and method for industrial equipment using wireless remote controller having emergency channel

The present invention relates to a wireless control system and method for industrial equipment such as a crane, hoist, and more specifically, a system that can be used to replace other wireless remote controllers of the same kind in an emergency situation in which the wireless remote controller paired to any industrial equipment cannot be used. And to a method.

In general, equipment for transporting or conveying heavy cargo such as cranes, hoists, winches, etc., and equipment operating far from the work site, such as concrete pump cars, are provided with a wireless remote control for the user's safety and convenience.

In addition, these industrial equipments are provided with a receiving device for receiving a signal from a wireless remote control and transmitting a control signal to a driving device such as a motor or a pneumatic / hydraulic cylinder.

Low-power signals in the 447 MHz band are allowed for wireless control of industrial equipment, and frequency channels with a spacing of 12.5 kHz are typically used.

In the field, by assigning one frequency channel to a receiver of an industrial equipment and a corresponding wireless remote controller, only one industrial equipment can be controlled by one wireless remote controller. This is to prevent equipment malfunction and safety accidents caused by signals from other radio remote controllers.

On the other hand, since the wireless remote control is used by the user, it often happens that it cannot be used because it is damaged or dropped during use.

However, if the wireless remote control breaks down during the operation, you can request repair by requesting after-sales service from the manufacturer or distributor of the wireless remote control or use a new wireless remote control. Can be.

In addition, when receiving and using an alternative wireless remote control, the frequency channels of the wireless remote control and the receiving apparatus should be set to match. Such a task requires specialized knowledge, so it is difficult for a user in the field to perform it directly.

In order to solve this problem, a master remote controller may be prepared in advance, but there is a problem of cost increase because additional master remote controllers need to be purchased, and when a large number of devices and a plurality of wireless remote controllers are used in the field, the master Since the signal of the remote controller may interfere with the normal operation of other wireless remote controllers, it is difficult to simultaneously use the other wireless remote controllers and the master remote controller.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a method in which another wireless remote controller can be replaced even if one wireless remote controller fails in a site where a plurality of industrial equipments and wireless remote controllers are used.

In order to achieve the above object, the present invention provides a control system comprising a plurality of wireless remote control and a plurality of industrial equipment having a receiving device for receiving signals of the plurality of wireless remote control, the wireless remote control, An input unit for inputting a work command; A controller converting a work command input through the input unit into a command data signal; A wireless communication unit having a frequency generator and a wireless transmitter for carrying the command data signal on the radio frequency generated by the frequency generator; And a channel switcher for selecting an output frequency of the frequency generator from a normal channel for a normal mode and an emergency channel for an emergency mode, wherein the receiver comprises: a wireless receiver for receiving a signal of the radio remote control unit; And a mode selecting means for selecting the receiving device from a normal mode capable of receiving a signal of the normal channel and an emergency mode capable of receiving a signal of the emergency channel.

In the wireless control system according to the present invention, the frequency generator includes a first frequency generator for generating a frequency signal of the normal channel and a second frequency generator for generating a frequency signal of the emergency channel, the wireless communication unit is And a switching unit for selectively transmitting output signals of the first frequency generator and the second frequency generator to the wireless transmitter according to a channel change command input through a channel switcher.

In addition, in the wireless control system according to the present invention, the wireless communication unit further includes a frequency changing unit connected to the frequency generating unit, wherein the frequency changing unit is the normal channel according to the channel change command input through the channel switching unit. It may be characterized in that the control to select and output from the frequency signal of the emergency signal and the frequency signal of the emergency channel.

In addition, the present invention is a method for controlling industrial equipment using the above-described wireless control system, (a) a plurality of wireless remote control and each receiver of the plurality of industrial equipment is set to the normal mode, each channel of a different frequency Assigning; (b) switching the industrial equipment corresponding to the failed wireless remote controller from among the plurality of wireless remote controllers to an emergency mode, selecting an alternative wireless remote controller from the plurality of wireless remote controllers, and operating a channel switching unit to switch to the emergency mode; (c) the alternative radio remote controller loading the command data signal on the frequency signal of the emergency channel and transmitting the command data signal; (d) receiving the frequency signal of the emergency channel by the receiving device switched to the emergency mode and transmitting a control signal to a driving device to operate the industrial equipment corresponding to the failed wireless remote control; Provide control method.

In the wireless control method according to the invention, the step (a) comprises the step of storing the unique ID and the emergency mode ID of the radio remote control corresponding to each receiving device of the plurality of industrial equipment, the step (c) It may be characterized in that for transmitting the emergency mode ID that the user has entered or stored in advance.

According to the present invention, in the case where a plurality of industrial equipment and a wireless remote control is used, when one wireless remote control is broken, even if there is no special knowledge, another wireless remote control can be used as a substitute for simple operation.

Therefore, it is possible to prevent the work delay due to the after-sales service of the failed wireless remote control and the cost loss and productivity decrease. You can also save money by not having to purchase a mast remote.

1 is a schematic structural diagram of a radio control system according to an embodiment of the present invention;
2 is a block diagram of a wireless remote control according to an embodiment of the present invention
3 is a block diagram of a wireless remote control according to another embodiment of the present invention
4 is a block diagram of a receiving apparatus according to an embodiment of the present invention.
5 is a flowchart illustrating a method of using an alternative wireless remote control according to an embodiment of the present invention.
6A and 6B are state diagrams illustrating a method of using an alternative wireless remote control according to an embodiment of the present invention.

Hereinafter, with reference to the drawings will be described a preferred embodiment of the present invention.

Wireless control system of the industrial equipment according to an embodiment of the present invention, as shown in the configuration of Figure 1, a wireless remote control 100, and a receiving device 210 for receiving a signal transmitted from the wireless remote control 100 and Industrial equipment 200 having a driving device 220 that operates in accordance with the signal received from the receiving device (210).

As shown in the configuration diagram of FIG. 2, the wireless remote control 100 includes an input unit 110, a channel switching unit 120, a storage unit 130, a control unit 140, and a wireless communication unit 150.

The input unit 110 may be a part for inputting an operation command by a user, and a keypad, a button group, a joystick, a touch screen, a touch pad, and the like may be used. In addition, it is preferable to include an emergency stop button to prevent safety accidents.

The channel switching unit 120 is a part manipulated by a user to change the frequency channel transmitted by the wireless communication unit 150. The channel switching unit 120 may be provided in the form of a keypad or a button for inputting a switching command to the control unit 140 as shown, or may be provided in the form of a switching terminal connected to the switching unit 154 to be described later. .

The storage unit 130 stores a control program of the wireless remote control 100, a unique ID, etc.

The controller 140 controls overall operation of the wireless remote controller 100, and a microcontroller in the form of a chip may be used. In this case, the microcontroller may include the storage 130.

In addition, the control unit 140 converts the operation command input through the input unit 110 into a predetermined data signal and transmits it to the wireless communication unit 150.

The wireless communication unit 150 transmits the command data signal transmitted from the control unit 140 to the outside using a wireless signal of a predetermined frequency band.

According to an embodiment of the present invention, the wireless communication unit 150 includes a first frequency generator 151 and a second frequency generator 152, the first frequency generator 151 and the second frequency generation The unit 152 generates carrier radio frequencies for different channels. For example, the first frequency generator 151 generates an A channel frequency in the 447 MHz band, the second frequency generator 152 is set to generate an F channel frequency in the 447 MHz band, and sets the F channel as an emergency channel. Can be.

The first frequency generator 151 and the second frequency generator 152 may be configured by selectively combining, for example, an oscillator, a PLL circuit, a mixer, and the like, and such a configuration is well known in the wireless communication field. Description is omitted.

Each output terminal of the first frequency generator 151 and the second frequency generator 152 is connected to the switching unit 154, the switching unit 154 to the channel change command input through the channel switching unit 120 Accordingly, it serves to selectively transmit the output signal of the first frequency generator 151 or the second frequency generator 152 to the wireless transmitter 156.

The wireless transmitter 156 loads the command data signal generated by the user's operation command on the output signal of the first frequency generator 151 or the second frequency generator 152 selected by the channel switcher 120. Send out through the antenna. At this time, the unique ID of the wireless remote control 100 may be transmitted together with the command data signal.

FIG. 2 illustrates a case in which two frequency generators 151 and 152 are included in the wireless communication unit 150. However, the wireless communication unit 150 'may be configured in another manner as shown in FIG.

That is, as shown in the wireless remote control 100 ′ of FIG. 3, the frequency change unit 158 is connected to one frequency generator 151, and the user inputs a channel change command through the channel switch unit 120. When the frequency changer 158 is changed, the output frequency of the frequency generator 151 may be changed.

In addition, the frequency changing unit 158 may be provided in the form of input means connected to the PLL circuit of the frequency generating unit 151 and inputting a switching mode code value, for example. That is, different frequencies may be selectively generated by causing the PLL circuit to generate frequencies according to the input code value. In this case, instead of separately installing the frequency changing unit 120, the channel switching unit 120 may be designed to perform the function of the frequency changing unit 158.

Meanwhile, as shown in FIG. 4, the receiver 210 included in the industrial equipment 200 includes a wireless receiver 212, a controller 214, and a mode switching unit 216.

The radio receiver 212 receives a radio signal of the radio remote controller 100 and reads command data signals included in the radio signal and unique ID information if necessary.

The wireless receiver 212 may include a band pass filter for receiving only a signal of a set channel band, and may include a filter for a normal channel and a filter for an emergency channel.

The controller 214 may receive the command data signal and the ID information from the wireless receiver 212, and then perform an ID verification process before transmitting a drive signal to the driving device 220 or directly controlling the driving device 220. have. That is, it is determined whether the received ID information matches the ID of the wireless remote controller registered in the receiving device 210. If the IDs match, the corresponding command data signal is transmitted to the driving device 220 or the command data signal is predetermined. By converting into a control signal of the control unit 220 can be directly controlled.

The mode switching unit 216 is for changing the reception frequency channel of the receiver 210 in an emergency, and is a means for selecting a normal mode and an emergency mode. For example, a function of selectively transmitting the received signal to the normal channel filter and the emergency channel filter of the wireless receiver 212 may be performed.

Accordingly, the reception device 210 controls the driving device 220 by receiving a signal of a set frequency channel in a normal mode, and controls the driving device 220 by receiving only a signal of an emergency channel in an emergency mode.

The mode switching unit 216 may be configured as a separate switching means as shown in the figure, it may be used as a mode switching means a power switch (not shown) connected to the receiving device 210. That is, when the power switch is turned off and on, the receiver 210 may be set to recognize that the emergency mode has been switched.

Although not shown in the drawing, the receiving device 210 preferably includes input means for registering the frequency channel setting or ID of the wireless remote control 100 to be used, and a storage program for storing ID information of the wireless remote control to be used and the control program. . In addition, it is preferable to install a visual display device and / or an audio display device (LED, speaker, buzzer, etc.) so that the user can visually check the operation state.

Hereinafter, a method of using an alternative wireless remote controller according to an embodiment of the present invention will be described with reference to the flowchart of FIG. 5.

First, as shown in FIG. 6A, when the same type of industrial equipments 200a, 200b and 200c are used in the field, the industrial equipments 200a, 200b and 200c and the wireless remote controllers 100a, 100b and 100c for the same are one-to-one. It should be paired. At this time, it is a matter of course to set the channel of the transmission frequency for each of the wireless remote control (100a, 100b, 100c).

For example, if three wireless remote control (100a, 100b, 100c) is used as shown, the transmission frequency of each wireless remote control must be set differently, such as channel A, channel B, channel C, each corresponding industrial equipment The reception frequencies of (200a, 200b, 200c) should also be set to channel A, channel B, and channel C, respectively.

Therefore, each industrial equipment (200a, 200b, 200c) is to operate by receiving the frequency of the different channel transmitted from the paired wireless remote control (100a, 100b, 100c), respectively.

During normal operation, if the wireless remote control 100a communicating with channel A is damaged and cannot be used, the user may use one of the remaining two wireless remote controls 100b and 100c as an alternative wireless remote control. Can be.

For example, in order to use the wireless remote control 100c set to the channel C as a substitute, first, the channel switching unit 120 is operated to change the output frequency of the wireless communication unit 150 and 150 'to the channel F which is an emergency channel. (ST11)

In addition, the receiver 210 of the industrial equipment 200a corresponding to the damaged wireless remote control 100a should be switched to the emergency mode. The receiver 210 may be switched to the emergency mode by operating the mode switching unit 216 as described above, or may be switched to the emergency mode when the power is turned off and on.

When the receiver 210 is switched to the emergency mode, the channel of the reception frequency is changed from a normal channel (A channel) to an emergency channel (eg, F channel). (ST12)

In the above description, the channel of the replacement wireless remote controller 100c is changed to be changed before the mode of the receiving device 210. However, since the channel of the alternative wireless remote controller 100c is only an example, the order is not limited thereto.

When the user inputs a command through the replacement wireless remote control 100c after completing the channel change and mode switching, as shown in FIG. 6B, the replacement wireless remote control 100c commands a work command at the outgoing frequency of the F channel, which is an emergency channel. In operation (ST13), the industrial equipment (100a) initially operating by receiving a radio signal of channel A receives the channel F signal of the replacement radio remote control (100c) to control the driving device 220 to continue work. Done. (ST14, ST15)

Therefore, according to the present invention, the user can continue to work using another wireless remote control without waiting for A / S even if the wireless remote control is broken, thereby preventing the loss of time and cost due to the interruption of work. .

On the other hand, for more secure operation, it is preferable that the receiving device 220 of each industrial equipment 200a, 200b, or 200c undergoes a procedure of checking whether the received radio frequency is transmitted from a paired radio remote controller.

In general, a unique ID is stored for each wireless remote control (100a, 100b, 100c) during manufacturing, or a unique ID is stored in each wireless remote control when setting the equipment. The ID of the wireless remote controller corresponding to the reception device 210 is also input and stored.

However, as described above, when the replacement wireless remote control 100c is used, the ID stored in the reception device 210 of the industrial equipment 200a and the ID of the replacement wireless remote control 100c may be different.

Therefore, it is preferable to input the emergency ID separately in the process of switching the channel of the replacement wireless remote control 100c (ST11) and the process of switching the mode of the receiving device 210 (ST12).

However, since the receiving device 210 is mostly far from the user, both the normal mode ID and the emergency mode ID may be stored in the receiving device 210 in advance for the convenience of the user.

That is, in the normal mode, the receiver 210 determines whether the ID of the wireless remote controller included in the received radio signal matches with the ID for the normal mode, and in the emergency mode, the ID of the received wireless remote controller and the ID for the emergency mode. It can be determined whether the match is in preparation.

Therefore, if the same emergency mode ID is stored in the receiving device 210 of all the industrial equipments 200a, 200b, and 200c, and notified to the user, the user changes the channel of the alternative wireless remote control 100c to the F channel. The alternative wireless remote controller 100c may be used by inputting the emergency mode ID through the input unit 110.

Alternatively, the emergency mode ID may be stored in advance in all the wireless remote controllers 100a, 100b, and 100c.

In the above description, only the wireless transmitter 156 is provided in the wireless remote controller 100, and only the wireless receiver 212 is provided in the receiver 210. However, if necessary, the wireless remote control 100 and the receiving device 210 may be given both transmission and reception functions to implement bidirectional communication.

In the above description of the preferred embodiments of the present invention, the present invention is not limited to the above-described embodiments, but may be modified or modified in various forms, and the modified or modified embodiments may also be described in the technical scope of the present invention. If included in the scope of the invention it will be natural.

100: wireless remote control 110: input unit
120: channel switching unit 130: storage unit
140: control unit 150: wireless communication unit
151 and 152: first and second frequency generator 154: switching unit
156: wireless transmission unit 158: frequency changing unit
200: industrial equipment 210: receiver
212: wireless receiving unit 214; The control unit
216: mode switching unit

Claims (5)

A control system comprising a plurality of industrial devices including a plurality of wireless remotes and a receiving device for receiving signals of the plurality of wireless remotes, respectively.
The wireless remote control,
An input unit for inputting a work command;
A controller converting a work command input through the input unit into a command data signal;
A wireless communication unit having a frequency generator and a wireless transmitter for carrying the command data signal on the radio frequency generated by the frequency generator;
Channel switching unit for selecting the output frequency of the frequency generating unit from the normal channel for the normal mode and the emergency channel for the emergency mode
Lt; / RTI >
The receiving apparatus includes:
A wireless receiver which receives a signal of the wireless remote controller;
Mode selecting means for selecting the reception device from a normal mode capable of receiving a signal of the normal channel and an emergency mode capable of receiving a signal of the emergency channel;
Wireless control system of the industrial equipment comprising a The method of claim 1,
The frequency generator includes a first frequency generator for generating a frequency signal of the normal channel and a second frequency generator for generating a frequency signal of the emergency channel,
The wireless communication unit includes a switching unit for selectively transmitting the output signal of the first frequency generator and the second frequency generator to the wireless transmitter in accordance with a channel change command input through the channel switching unit. Wireless control system The method of claim 1,
The wireless communication unit further includes a frequency changer connected to the frequency generator,
The frequency changing unit controls the frequency generator to select and output the frequency signal of the normal channel and the frequency signal of the emergency channel according to a channel change command input through the channel switching unit. In the method of controlling industrial equipment using the radio control system of claim 1,
(a) setting a plurality of wireless remote controllers and receivers of the plurality of industrial equipments in a normal mode and allocating channels of different frequencies;
(b) switching the industrial equipment corresponding to the failed wireless remote controller from among the plurality of wireless remote controllers to an emergency mode, selecting an alternative wireless remote controller from the plurality of wireless remote controllers, and operating a channel switching unit to switch to the emergency mode;
(c) the alternative radio remote controller loading the command data signal on the frequency signal of the emergency channel and transmitting the command data signal;
(d) operating the industrial equipment corresponding to the failed wireless remote control by transmitting a control signal to a driving device after receiving the frequency signal of the emergency channel by the receiving apparatus switched to the emergency mode;
Wireless control method of industrial equipment including 5. The method of claim 4,
The step (a) includes the process of storing the unique ID and the emergency mode ID of the radio remote control corresponding to each receiving device of the plurality of industrial equipment,
Step (c) is a wireless control method of the industrial equipment, characterized in that for transmitting the emergency mode ID input or stored in advance with the user
KR1020120024890A 2012-03-12 2012-03-12 Control system and method for industrial apparatus using wireless remote controller having emergency channel KR20130103890A (en)

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KR1020120024890A KR20130103890A (en) 2012-03-12 2012-03-12 Control system and method for industrial apparatus using wireless remote controller having emergency channel

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106896764A (en) * 2017-02-17 2017-06-27 上海格尼特控制技术有限公司 The double mcu closed loop control method of remote control receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106896764A (en) * 2017-02-17 2017-06-27 上海格尼特控制技术有限公司 The double mcu closed loop control method of remote control receiver

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