JPH05137180A - Radio remote controller - Google Patents

Abstract

PURPOSE:To make the controller low in cost and small in size by simplifying the constitution, and to improve the reliability by reducing the deviation of setting due to missetting, oscillation, or the like. CONSTITUTION:Only a receiver 2 is provided with an equipment address setting part 11 consisting of a dip switch and a frequency setting part 12. The receiver 2 and a transmitter 1 are connected through serial interfaces 3 and 4 between them with a wire line 5. The equipment address set by the operation of the dip switch of the receiver 2 and data of the radio frequency are transmitted to the transmitter 1 through the wire line 5. The transmitter 1 is provided with a non-volatile memory 7b where these transmitted device address and data of the radio frequency are stored.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless remote control device for wirelessly controlling an industrial machine such as a crane as a controlled object by simplex.

[0002]

2. Description of the Related Art For example, in a wireless remote control device in which an industrial machine such as a crane is wirelessly operated by simplex as a controlled object, a controlled object which is operated in advance in order to prevent erroneous operation due to interference of the same frequency. The device address and the radio frequency of are initialized.

FIG. 2 shows a structural example of this type of wireless remote control device. More specifically, in this device, the transmitter 21 is configured to include an operation switch unit 22, a device address setting unit 23, a frequency setting unit 24, a transmission control unit 25, a modulation unit 26, a wireless transmitter 27, and an antenna 28. ing.

The operation switch section 22 is composed of a plurality of switches whose operation items are, for example, the traveling direction of the operated body, and the transmission control section 25 transmits a switch signal which has been pushed.
Are typing in. The device address setting unit 23 is, for example, DI
It consists of a P-SW (dual inline package-switch; hereinafter referred to as a dip switch), and in order to prevent confusion with other devices when manipulating the controlled object, the device-specific address is set by operating the dip switch. The device address data is paired with the device address setting unit 30 in the receiver 29 and the same data is initially set and input to the transmission control unit 25. Like the device address setting unit 23, the frequency setting unit 24 is composed of, for example, a DIP switch. By operating the DIP switch at the time of initial setting, the frequency setting unit 31 and the frequency setting unit 31 in the receiver 29 are the same for controlling the controlled object. The radio frequency is set and input to the transmission control unit 25. The transmission control unit 25 is configured to include a transmission format conversion unit 25a and a control unit 25b. The transmission format conversion unit 25a includes a switch signal from the operation switch unit 22 and a device address setting unit 2
3 is converted into a transmission signal in the transmission format shown in FIG. 3 and input to the modulator 26. Further, the control unit 25b controls the wireless transmitter 27 so that the transmission signal is transmitted at the wireless frequency set by the frequency setting unit 24.

Here, in the transmission format, as shown in FIG. 3A, one cycle is composed of three words, one synchronization word (see FIG. 3B) and two information words (see FIG. 3C). The device address is assigned to the information bit in the first information word, and the switch signal is assigned to each switch of the operation switch unit 22 in the 12-bit information bit in the second information word. One word consists of 32 bits, and the information word consists of 3 bits.
A bit word address (information word number), 12 bits of information bits and 1 bit of parity are initially transmitted, and the remaining 16 bits are inverted and continuously transmitted. The number of information words is determined by the number of switches arranged in the operation switch section 22.

The modulator 26 converts the transmission signal from the transmission format converter 25a converted into the transmission format shown in FIG. 3 into, for example, an MSK (minimum shift keying) modulation method or a direct binary FSK (frequency shift keying).
It is converted into a signal to be passed to the wireless transmitter 27 by the modulation method. The wireless transmitter 27 includes a synthesizer including a PLL circuit, and operates the synthesizer based on the constant of the frequency divider in the PLL circuit corresponding to the number of the DIP switch at the time of setting the radio frequency to determine the transmission frequency. , Is transmitted from the antenna 28 as a radio wave.

The receiver 29 has a device address setting unit 3
0, frequency setting unit 31, antenna 36, wireless receiver 3
2, a demodulation unit 33, a reception control unit 34, and an output unit 35. The device address setting unit 30 is the transmitter 21
Similarly to the device address setting unit 23, the device address setting unit 23 of the transmitter 21 sets the same device-specific address as the device address setting unit 23 of the transmitter 21 at the time of initial setting. It is initialized as a pair with the device address setting unit 23 in 21 and is input to the reception control unit 34. Frequency setting unit 3
The reference numeral 1 denotes a dip switch like the device address setting unit 30, and a transmitter 21 for controlling the controlled object by operating the dip switch at the time of initial setting.
The same frequency as that of the frequency setting unit 24 is set and input to the reception control unit 34. The wireless receiver 32 is the transmitter 21
The transmission signal transmitted from the antenna 36 is received by the antenna 36, the radio wave received by the radio frequency set by the control unit 34a is detected by the setting of the frequency setting unit 31, the demodulation unit 33 demodulates and the transmission of the reception control unit 34 is performed. The signal is input to the signal determination unit 34b. The transmission signal determination unit 34b synchronizes with the first synchronization word in the serial transmission signal, checks the device address from the first information word, and checks the switch signal with the second information word to confirm that the data is normal. The output signal is input to the output unit 35 only when the determination is made. The output unit 35 is composed of a relay circuit, and controls the operation of the controlled object by opening and closing the contacts of the relay according to the output signal from the transmission signal determination unit 34b.

As described above, in the above-described conventional wireless remote control device, before the actual control of the controlled object, the initial setting of the device address and the data of the radio frequency is performed in the transmitter 21 and the receiver 29 by the dip. The data was set individually by operating the switch.

[0009]

However, in the above-described conventional wireless remote control device, the device address and the radio frequency having the same contents are initialized by both the transmitter 21 and the receiver 29. There is a possibility that setting mistakes will occur, and if a setting mistake occurs, there is a possibility that the controlled object that should be operated originally will not be operated and other operated objects will be operated by mistake. I lacked sex.

Further, in this type of device, since the device address and the radio frequency are initially set by the DIP switch, the transmitter 21 which is mainly operated by being held by the hand is used.
However, vibration is apt to be applied, and particularly if the transmitter is accidentally dropped, the position of the switch may be displaced due to the impact at the time of the fall and the setting may be misaligned. In addition, when the receiver 29 is installed, for example, near the engine of the truck as the controlled object, there is a possibility that the setting may be changed due to the influence of vibration as in the transmitter 21.

Therefore, the present invention has been made in view of the above-mentioned problems, and an object thereof is to simplify the structure, to make the device inexpensive and small, to reduce setting errors, and to improve reliability. Another object of the present invention is to provide a wireless remote control device capable of reducing the setting error due to vibration and the like.

[0012]

In order to achieve the above object, a wireless remote control device according to the present invention comprises:
It is characterized in that it is provided with means for setting a setting parameter, which is initially initialized in advance for wirelessly controlling the controlled object by simplex, by means of a transmission path of another medium different from the wireless.

[0013]

The setting parameters that are initialized in advance to wirelessly control the controlled object by simplex are set by the transmission path of another medium different from wireless.

[0014]

1 is a block diagram showing an embodiment of a wireless remote control device according to the present invention.

The wireless remote control device according to this embodiment comprises a transmitter 1 and a receiver 2, and the transmitter 1 and the receiver 2 are separated from each other via a serial interface 3 and 4. They are connected by a wired line (signal line) 5 which is a medium. The transmitter 1 includes an operation switch unit 6, a transmission control unit 7, a modulation unit 8, a wireless transmitter 9, a serial interface 3, and an antenna 10. The operation switch unit 6 is composed of a plurality of switches in which, for example, the traveling direction of the controlled object is shown as an operation item, and a push-operated switch signal is input to the transmission control unit 7.

The transmission controller 7 comprises a controller 7a, a non-volatile memory 7b and a transmission format converter 7c. The controller 7a is transmitted from the receiver 2 via the serial interface 4 and the wired line 5. It receives the device address and the setting data (setting parameter) of the radio frequency via the serial interface 3, and controls the reading / writing of the setting data from / to the nonvolatile memory 7b. Further, the control unit 7a reads the radio frequency data stored in the non-volatile memory 7b, and uses this data as the constant of the frequency divider in the PLL circuit of the radio transmitter 9 corresponding to the number of the DIP switch when the radio frequency is set. To control the operation of the wireless transmitter 9.

The transmission format conversion section 7c converts the switch signal from the operation switch section 6 and the device address data of the nonvolatile memory 7b read by the control section 7a into a transmission signal in the transmission format shown in FIG. It is input to the modulator 8. Since the structure of the transmission format is the same as the conventional one, its description is omitted.

The modulation section 8 is a signal for passing the transmission signal from the transmission format conversion section 7c converted into the transmission format shown in FIG. 3 to the wireless transmitter 9 by, for example, the MSK modulation method or the direct binary FSK modulation method. Has been converted to. The wireless transmitter 9 includes a synthesizer including a PLL circuit, operates the internal synthesizer based on the constant converted by the control unit 7a, determines the transmission frequency, and transmits the radio wave from the antenna 10.

The receiver 2 includes a device address setting unit 11, a frequency setting unit 12, a parameter transmission instruction unit 13, and an antenna 1.
8, wireless receiver 14, demodulation unit 15, reception control unit 16,
The output unit 17 is provided. The device address setting unit 11 is composed of, for example, a DIP switch, and in order to prevent confusion with other devices when manipulating the controlled object,
At the time of initial setting, an address peculiar to the device is set by operating the DIP switch, and this device address data is input to the reception control unit 16.

The frequency setting unit 12 is the device address setting unit 1
As in the case of 1, a dip switch, for example, is operated. By operating the dip switch at the time of initial setting, the frequency for controlling the steered body is set and input to the reception control unit 16. The parameter transmission instructing section 13 inputs an instruction signal for transmitting the data of the device address and the radio frequency, which have been initialized, from the serial interface 4 to the transmitter 1 side via the wired line 5 to the reception control section 16.

The wireless receiver 14 is provided with a synthesizer including a PLL circuit, receives radio waves transmitted from the transmitter 1 from the antenna 18, and the radio set by the frequency setting unit 12 by the control unit 16a of the reception control unit 16. The received radio wave is detected based on the frequency, demodulated by the demodulator 15 and input to the transmission signal discriminator 16b of the reception controller 16. The control unit 16a transmits the initially set device address and radio frequency data to the transmitter 1 via the serial interface 4 and the wired line 5 by the instruction signal from the parameter transmission instruction unit 13. Further, the control unit 16a converts the initially set radio frequency data into a constant of the frequency divider in the PLL circuit corresponding to the number of the DIP switch at the time of setting the radio frequency to operate the synthesizer in the radio receiver 14. Have control.

The transmission signal discriminating unit 16b synchronizes with the first synchronization word in the serial transmission signal, checks the device address from the first information word, and
Check the switch signal of the second information word, check the data by inverting the array of each information word, and input the output signal to the output unit 17 only when all the data are judged to be normal. is doing. Output part 1
A relay circuit 7 controls the operation of the controlled object by opening and closing the contacts of the relay according to the output signal from the transmission signal discriminating unit 16b.

In the configuration described above, when initializing the device address and the radio frequency data,
First, the DIP switch in the device address setting unit 11 and the frequency setting unit 12 of the receiver 2 is operated to set the device address and the radio frequency. The set device address and radio frequency data are input to the control unit 16a. When this setting is completed, the parameter transmission instruction unit 13 inputs an instruction signal to the control unit 16a. As a result, the control unit 16a transmits the input device address and radio frequency data from the serial interface 4 to the transmitter 1 via the wired line 5.
The device address and the radio frequency data transmitted via the wired line 5 are input to the control unit 7 a of the transmitter 1 via the serial interface 3. Then, the control unit 7a stores the input device address and radio frequency data in the non-volatile memory 7b. This allows
Initialization of the device address and the radio frequency data for the transmitter 1 and the receiver 2 is completed.

Therefore, in the above-described embodiment, the device address and the radio frequency data are set only on the receiver 2 side by operating the DIP switch, and the set data is transmitted via the wired line 5 which is a medium different from the radio. Since it is transmitted to the transmitter 1 and stored in the non-volatile memory 7b, the configuration of the DIP switch on the transmitter 1 side can be deleted, and the device can be downsized with an inexpensive and simple configuration.

Further, since the setting operation by the DIP switch is performed only on the receiver 2 side, it is possible to reduce the setting error and improve the reliability. Furthermore, since the setting operation by the DIP switch is not performed in the transmitter 1 that is held and operated by hand, even if the transmitter 1 is accidentally dropped and vibration is applied, there is no possibility that the setting is changed.

By the way, in the above-described embodiment, the configuration related to the initial setting (the device address setting unit 11 including the DIP switch and the frequency setting unit 12) is provided only on the receiver 2 side, and the initial setting is performed on the receiver 2 side. The device address and the radio frequency data thus set are serially transmitted to the transmitter 1 side through the wired line 5 and set. The configuration related to this initial setting is provided on the transmitter 1 side, and the transmitter 1 side is provided. Alternatively, the data initially set in 1 may be serially transmitted to the receiver 2 side via the wired line 5 and set. This allows the receiver 2
When, for example, the vehicle is installed near the engine of the truck as the controlled object, it is possible to prevent the setting from being misaligned due to the influence of the engine vibration.

Further, the nonvolatile memory 7b is provided in both the transmitter 1 and the receiver 2, and the device address and the radio frequency data are set to the transmitter 1 and the receiver 2 at once by a personal computer or the like. It may be configured to. This makes it possible to further simplify the configuration of the device and reduce the size of the entire device.

Further, in the above-described embodiment, the transmitter 1 and the receiver 2 are connected by the wired line 5 via the serial interfaces 3 and 4, and the device address and the frequency are initialized by the wired transmission. As described above, a light emitting element (light emitting diode) is arranged on the receiver 2 side and a light receiving element (phototransistor) is arranged on the transmitter 1 side as a transmission path by a medium other than wireless to receive by optical transmission. The initial setting may be performed from the machine 2 side. Further, the light emitting element and the light receiving element may be arranged in reverse. Further, although the data is serially transmitted for the initial setting, the data may be transmitted in parallel.

[0029]

As described above, in the wireless remote control device according to the present invention, the setting parameters that are initially set when the controlled object is wirelessly controlled by simplex transmission are transmitted by another medium different from the wireless communication. Since it is configured to be centrally managed and set according to the route, the configuration of the dip switch of at least one of the transmitter and the receiver can be reduced, the configuration can be simplified, and the device can be configured inexpensively and compactly. Also,
It is possible to reduce setting errors and improve reliability.
Further, since the data is set by the transmission path of the medium different from the wireless, it is possible to reduce the setting error due to external vibration or the like.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a wireless remote control device according to the present invention.

FIG. 2 is a diagram showing a configuration example of a conventional wireless remote control device.

3A, 3B, and 3C are diagrams showing an example of a transmission format of a transmission signal.

[Explanation of symbols]

1 ... Transmitter, 2 ... Receiver, 3, 4 ... Serial interface, 5 ... Wired line, 7 ... Transmission control unit, 7b ... Non-volatile memory, 11 ... Device address setting unit, 12 ... Frequency setting unit, 13 ... Parameter Transmission instruction unit, 16 ... Reception control unit.

Claims (1)

[Claims] 1. A wireless remote control, comprising means for setting a setting parameter, which is initialized in advance for wirelessly controlling a controlled object by simplex, by a transmission path using another medium different from wireless. Control device.