KR910008294Y1 - Cordless remote control apparatus - Google Patents

Abstract

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Description

Wireless remote control

1 is a block diagram of a receiving means constituting a part of a radio remote control apparatus according to the present invention.

2 is a block diagram of a transmission means forming part of the present invention.

3 is a vector representation graph for moving cargo.

* Explanation of symbols for main parts of the drawings

1: Key Matrix 2: Encoder

3: 3-state buffer 4, 7, 23, 26: oscillator

6: input / output port 8: multiplexer

9: pulse code modulation 10, 30: amplifier

11, 20: antenna 21: band pass filter

22: RF amplifier 24, 27: mixer

25, 28: intermediate frequency amplifier 29: detector

31: power supply (transmission output) detection unit 32: ROM

33: CUP 34: General purpose asynchronous transmission and reception device

35: parallel interface 36: decoder

37: relay K1 to K7: function key

The present invention relates to a radio remote control device for rapidly moving industrial machinery such as cranes or cargo loading and unloading devices in various directions.

Industrial machinery, such as cranes, for moving heavy goods in the up, down, and horizontal directions were for the operator to ride directly on the crane and adjust it. For example, when the cargo at point A shown in FIG. 3 is moved to point B, the driver boards the cargo at the point A of the crane in the control room of the crane at a predetermined height from the ground (not shown). After hanging (not shown), lift the cargo in the direction of arrow (a) using the upward (+ Y) operating lever.

The driver then moves the load in the direction of arrow (b) using the horizontal (-Z direction) control lever or in the direction of arrow (C ') using the right (+ X direction) control lever. Let's do it. Then, the driver adjusts the right direction (+ X direction) control lever to move the cargo in the direction of the arrow (C), or the horizontal direction (-Z direction) lever moves the cargo in the direction of the arrow (b '). Finally it may be located at point B.

However, these cranes require a lot of travel time because the driver has to operate the operating lever in the order a → b → c or a → c '→ b', and the incidence of safety accidents is caused by the driver's local adjustment in the crane itself. There were many issues with this.

Accordingly, the present invention has the object to provide a wireless remote control device for moving the cargo quickly without the driver need to board the crane in view of such circumstances.

The present invention for achieving this object is connected to the transmission means for generating a frequency signal for moving the cargo in a predetermined direction, and the drive device of the crane, by operating the drive device by a signal transmitted from the transmission means crane It is characterized in that it is configured as a means for quickly moving from one point of the other point to.

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

1 is a block diagram of a portable transmission means constituting a part of a radio remote control apparatus according to the present invention.

As shown here, the transmitting means encodes the key matrix 1 capable of simultaneously generating a predetermined signal (for example, a three-way signal) by a plurality of function keys K1-> F7, and encoding the generated three-way signal. The encoder 2 for operation, a tri-state buffer 3 for passing the encoded signal, and the signal generated by the local oscillator 4 to enable the buffer 3 A sequencer 5 for applying a signal and an input / output port 6 for serially transmitting parallel signals passing through the buffer 3 at predetermined time intervals (for example, 5 × 10 seconds) under the control of the sequencer 5. ), A multiplexer 8 generating a plurality of communication signals by the signal input from the crystal oscillator 7, and pulse signal modulation of the serial signal input from the input / output port 6 by operating by the multiplexed signal. A modulator 9 for amplifying the modulated signal to a predetermined frequency (e.g., 280 MHz to 290 MHz) and an electric field intensity (e.g., an amplifier 10 for outputting a signal having 15 μV or less at a distance of 100 m.) 11 shows a transmission antenna.

2 is a block diagram of receiving means for operating a crane by processing a signal transmitted from the transmitting antenna 11 of FIG. The receiving means shown in FIG. 2 includes a band pass filter 21 for passing only a frequency band (280 MHz to 290 MHz) transmitted from the transmitting antenna 11 among the frequency signals received from the receiving antenna 20, and filtered. RF amplifier 22 for amplifying a frequency signal, a first mixer 24 for mixing a high frequency signal generated by the first local oscillator 23 and the signal amplified in the RF amplifier, and amplifying the mixed signal A first intermediate frequency amplifier 25 for generating a second frequency oscillator 26 for generating a local frequency signal for preventing noise by increasing the frequency of the signal amplified by the intermediate frequency amplifier, and an intermediate frequency signal and a local oscillating frequency. A second mixer 27 for mixing the signals, a second intermediate frequency amplifier 28, and a detector 29 for detecting the amplified signals. In addition, the receiving means includes an amplifier 30 for amplifying the signal detected by the detector 29, a power detecting unit 31 for supplying power to the crane by operating on the amplified signal, and when power is applied. A general purpose asynchronous transceiver (34) for transmitting the received signal under control of the ROM (32) and the central processing unit (33). A programmable parallel interface 35 is connected to the general purpose asynchronous transmission and reception device 34, and a decoder 36 is connected to the parallel interface 35 for applying a signal to the driving device of the crane.

37 shows a relay composed of a coil 37 'and a contact 37 ".

The operation of the present invention configured as described above will be described.

First, as shown in FIG. 3, in order to move the cargo at point A to point B, the driver presses a function key K7 to supply power to the circuit of FIG. K2, K6). When these function keys are pressed, the key matrix 1 generates a key signal for the + X, + Y and -Z directions through its output stage and applies it to the encoder 2. At this time, the encoder 2 encodes the input signal and inputs it to the tri-state buffer 3. Meanwhile, the signal generated by the local oscillator 4 is applied to the sequencer 5, and the sequencer 5 applies an enable signal to the tri-state buffer 3 and the input / output port 6.

The tri-state buffer 3 operates by the enable signal input from the sequencer 5 to input the encoded signal to the input / output port 6.

At this time, the input / output port 6 outputs the signals input in a parallel manner in a serial manner under the control of the sequencer 5. That is, the input / output port 6 converts the parallel signals in the + X, + Y, and -Z directions into serial signals with time intervals of about 5 x 10 seconds and applies them to the pulse code modulator 9.

The pulse code modulator 9 operates by the signal generated by the multiplexer 8 to modulate the serial signal analogously and input it to the amplifier 10. Then, the amplifier 10 amplifies the modulated signal and transmits a signal having an electric field strength of 15 μV at a frequency of 280 MHz to 290 MHz and a distance of 100 m to the outside through the transmission antenna 11. The radio signal emitted from the transmission antenna 11 is applied to the band pass filter 21 through the reception antenna 20. The band pass filter 21 passes only a frequency signal of 280 MHz to 290 MHz among the signals input through the reception antenna 20 and supplies it to the RF amplifier 22. At this time, the RF amplifier 22 amplifies the input signal to a sufficient level and applies it to the mixer 24. The mixer 24 outputs the high frequency signal generated by the first local oscillator 23 and the RF amplifier 22. The mixed signals are supplied to the first intermediate frequency amplifier 25. The signal amplified by the first intermediate frequency amplifier 25 is once again amplified by the second local oscillator 26, the second mixer 27 and the second intermediate frequency amplifier 28 and applied to the detector 29. .

The detector 29 removes the noise included in the amplified signal, and the amplifier 30 amplifies a signal having no noise component to a predetermined level and applies it to the power detector 31 and the general purpose non-transceiver transceiver 34. . When there is an input signal, the power detector 31 senses that there is a signal to be transmitted and flows a current through the coil 37 'of the relay 37. As a current flows in the coil 37 ', an electromagnetic force is generated in the coil 37' and turned on at the contact 37 ", so that the central processing unit 33 is supplied with power.

As the central processing unit 33 is operated, the asynchronous transceiver 34 and the ROM 32 operate under the control of the central processing unit 33. The asynchronous transmission and reception device 34 applies a serial signal input from the reception terminal Rx to the programmable parallel interface 35 through its transmission terminal Tx under the control of the central processing unit 33.

When a serial signal is applied to the parallel interface 35, the interface 35 generates a parallel signal through its output terminal and applies it to the decoder 36. At this time, the decoder 36 decodes the input signal and simultaneously applies signals in the + X, + Y, and -Z directions to the driving device of the crane.

The crane moves the cargo directly from the point A to the point B as shown by the arrow F in FIG. 3 according to the signals in the + X, + Y, and -Z directions.

When the cargo has been completely moved from the point A to the point B, when the driver turns off the function switches K1, K2, and K6, the transmission antenna 11 shown in FIG. The crane stops working because it does not work.

On the other hand, in order to move the cargo at point B to point A, the driver only needs to press function keys (K4, K5, K3). In this case, the operation is similar to that described above, and a detailed description thereof will be omitted. Shall be.

As such, the present invention requires a sequential operation (a → b → c or a → c '→ b') as in the case of moving goods from point A to B shown in FIG. Instead of moving the cargo directly in the direction of the arrow (F) can not only achieve the rapid movement of the crane, but also to prevent the risk of safety accidents due to local adjustment in advance.

Claims (1)

A key matrix 1 for generating a signal indicating a moving direction of the crane by a plurality of function keys K1 to K7, an encoder 2 for encoding a parallel signal generated at the key matrix 1, and A sequencer 5 for generating a control signal under the operation of the local oscillator 4, an input / output port 6 for operating a parallel signal as a serial signal by operating by the control signal generated at the sequencer 5; A pulse code modulator 9 for modulating the serial signal into a pulse code, and an amplifier for amplifying the pulse code modulated signal to a signal having a predetermined frequency and electric field intensity and transmitting the signal to the outside through the transmission antenna 11 ( 10) transmitting means; A band pass filter 21 for filtering the frequency signal received by the reception antenna 20, a wireless amplifier 22 for amplifying the filtered signal, a mixer 24 for increasing the frequency of the amplified signal, (27), an amplifier comprising oscillators (23, 26) and intermediate frequency amplifiers (25, 28), a detector (29) for removing noise of a signal contained in the amplified signal, and the detected signal. An amplifier 30 to amplify, a power supply including a power detector 31 and a relay 37 for sensing the amplified signal to operate the central processing unit 33, and receiving the detected serial signal An asynchronous transceiver 34 for transmitting the received signal under the control of the central processing unit 33, a parallel interface 35 for converting the transmitted serial signal into a parallel signal, and the above-mentioned parallel signal to decode the crane. Generating a signal for driving the drive unit of the Wireless remote control device, characterized in that consisting of the receiving means consisting of a coder (36).