JP2879013B2 - Remote control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control device for remotely controlling, for example, an electric golf cart or a riding cart used in a golf course.

[0002]

2. Description of the Related Art Conventionally, as a remote control device (remote control device) for remotely controlling an electric golf cart or a riding cart used at a golf course, for example, a weak radio wave which can be used without a license is used for wireless control. Things are known. By operating the remote controller, the cart can be controlled to start and stop even if it is unattended, and move in the course of the golf course. An ultrasonic sensor has been installed in front of the cart as a safety device for the cart player moving on the golf course, but the sensing range is narrow, and there are problems such as erroneous detection due to plants and the like. It has been considered to use a proximity sensor together. In particular, in the case of an engine-driven riding cart, it is considered that a proximity sensor capable of detecting approach of a caddy or a golf player from 10 m or more in terms of braking capability should be provided by all means from the viewpoint of ensuring safety. By providing such a proximity sensor, it is possible to control the traveling speed to be reduced by the approach of a person, and to stop gently at a safe distance when the approach is further made.

[0003]

However, the conventional wireless proximity sensor is a simple type of intermittent transmission of an unmodulated carrier. Therefore, an interference wave caused by a harmonic generated from a cart control unit or a sensor or the like is difficult. There is a problem that a malfunction is easily caused by an external radio wave or the like, and sufficient reliability cannot be obtained. In addition, the golf player or caddy must carry a transmitting device of a wireless proximity sensor in addition to the remote control transmitting device of the golf cart, and there is a problem that the comfort of playing is impaired.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and can integrate a remote control transmission device and a proximity sensor transmitter, thereby being easy to carry and reducing the burden of maintenance management of devices such as a battery. It is an object of the present invention to provide a remote control device capable of performing such operations.

[0005]

A remote control device according to the present invention comprises an encoder for generating a code signal and a code for operating the encoder to generate a specific code signal while a power switch is ON. Generating means, means for modulating and transmitting a proximity sensor transmission radio wave with a code signal output from the encoder by the code generation means, a remote control transmission switch, and the encoder for a predetermined time in accordance with operation of the remote control transmission switch , A means for generating a remote control code signal, a means for modulating and transmitting a remote control transmission radio wave by a code signal output from the encoder, and the encoder operating in response to operation of the remote control transmission switch. Means for inhibiting input from the code generation means to the encoder while the It is characterized in.

As described above, by modulating the transmission radio wave of the proximity sensor with a specific code signal and transmitting it, it is possible to prevent the reception side from erroneously detecting the radio wave. Further, since the encoder for generating the code signal can use a remote control device, the cost can be reduced. In addition, the remote control transmission device and the proximity sensor transmitter can be integrated, so that the device can be easily carried and the burden of maintenance management of devices such as a battery can be reduced.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a remote control transmission device according to one embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a battery charging terminal, which is connected to a rechargeable battery 3 via a diode 2 in a forward direction. The terminal voltage of the battery 3 is supplied to the voltage regulator 6 via the power switch 4. The LED 5 is provided between the input terminal of the voltage regulator 6 and the ground via a resistor R0.

The output voltage of the voltage regulator 6 is supplied to an input terminal I 1 of a code generator 8, which will be described in detail later, via a remote control transmission switch 7. The code generator 8 has input terminals I1 and I2, as will be described in detail later.
And output terminals O1, O2 and O3. The output voltage of the voltage regulator 6 is supplied to an input terminal I2 of the code generator 8 and also to a VCXO (voltage controlled crystal oscillator) 10 for a proximity sensor via a transistor switch 9 composed of, for example, an NPN transistor. You. That is, in the transistor switch 9, the output voltage of the voltage regulator 6 is supplied to the collector, the output signal of the output terminal O1 of the code generator 8 is input to the base, and the emitter output of the transistor switch 9 is, for example, 75 MHz. Is input to the proximity sensor VCXO 10 having The signal output from the output terminal O2 of the code generator 8 is input to the VCXO 10 for the proximity sensor. The proximity sensor VCXO 10 is, for example, 75 MHz.
300MHz of overton which is 4 times that of the quartz oscillator 11 of z
A high frequency signal of z is generated, and the output signal is radiated to the outside as a radio wave of a proximity sensor from a loop antenna 12 formed of, for example, a pattern of a printed circuit board.

The output terminal O2 of the code generator 8
Is input to a remote control VCXO (voltage controlled crystal oscillator) 13 including a 13.56 MHz crystal oscillator 14, for example. This remote control VCXO1
13. The 13.56 MHz signal output from 3 is input to the transmission output amplifier 15 and is multiplied by 3 to 40.68 MHz.
High frequency signal. The output signal of the transmission output amplifier 15 is radiated outside from the bar antenna 16 via the transmission output amplifier 15. The output voltage of the voltage regulator 6 is supplied to the remote control VCXO 13 and the transmission output amplifier 15 via the remote control transmission switch 7 and the transistor switch 17. This transistor switch 1
Reference numeral 7 denotes, for example, an NPN-type transistor. The voltage supplied from the voltage regulator 6 via the remote control transmission switch 7 is input to the collector, and the signal output from the output terminal O3 of the code generator 8 is input to the base. You. The emitter output voltage of the transistor switch 17 is controlled by the VCXO 13 for remote control and the transmission output amplifier 15.
Supplied to

The output terminal O3 of the code generator 8
The signal output from the electronic buzzer driving circuit 18 is sent to the electronic buzzer driving circuit
Is driven. That is, the electronic buzzer 19
The operator is made aware of the execution of the remote control transmission.

Next, the details of the code generator 8 will be described with reference to FIG. The voltage supplied from the voltage regulator 6 to the input terminal I1 via the remote control transmission switch 7 is supplied to the periodic pulse generation circuit 20 and the timer circuit 21. The periodic pulse generation circuit 20 and the timer circuit 2
The output signal of 1 is input to the AND gate 24 via the AND gate 22. The output signal of the timer circuit 21 is input to the AND gate 24 via the inverter 23.

The voltage supplied from the voltage regulator 6 to the input terminal I 2 of the code generator 8 is input to the periodic pulse generator 25. This periodic pulse generation circuit 25
Is input to the AND gate 26 together with the output signal of the inverter 23. AND gates 24 and 26
Is output to an encoder 28 through an OR gate 27.
Is input to The encoder 28 is configured using, for example, a 4-bit one-chip microcomputer, and is supplied with a voltage adjusted by the voltage regulator 6. The output signal of the AND gate 24 is output from the output terminal O3, and the output signal of the AND gate 26 is output from the output terminal O1.

The ID input terminal of the encoder 28 includes:
The ID setting switch 29 is connected, and the common line is set via the transistor switch 30. The transistor switch 30 is formed using, for example, an NPN transistor. A voltage supplied from the voltage regulator 6 to the input terminal I2 is applied to the collector of the transistor switch 30 via the resistor R1, and a signal output from the inverter 23 is connected to the base of the transistor R2. And the emitter is grounded. Then, the output signal of the encoder 28 is output from the output terminal O2.

FIG. 3 is a diagram showing an outline when the present invention is applied to a remote control for a golf cart. In FIG.
Reference numeral 40 denotes the remote control transmitter shown in FIGS.
A proximity sensor radio wave of 300 MHz is radiated together with a remote control radio wave of 40.68 MH.

On the other hand, on the golf cart side, 40.68M
An H remote control receiving antenna 41 and a 300 MHz band proximity sensor radio wave receiving antenna 42 are provided. The proximity sensor radio wave receiving antenna 42 is configured using a rod-shaped rod antenna, and is insulated and supported by a golf bag receiver.
The remote control receiving antenna 41 and the proximity sensor radio wave receiving antenna 42 are connected to a branching matching unit 43 by antenna lines, respectively, and are connected to the receiver 45 via a coaxial cable 44 from the branching matching unit 43. The antennas 41 and 42 are impedance-matched at the frequency including the demultiplexing filter constant, and feed the received radio wave to the receiver 45 efficiently. The receiver 45 demodulates and decodes the radio waves received by the antennas 41 and 42, and inputs control signals for starting, stopping, and decelerating the golf cart to the motor drive control unit 46. The motor drive control unit 46 controls the drive of the golf cart motor in accordance with the control signal from the receiver 45.

Next, the operation of the above embodiment will be described. FIG.
In the remote control transmitter shown in FIG.
When N is set, the voltage of the battery 3 is adjusted by the voltage regulator 6 and supplied to the proximity sensor VCXO 10 via the transistor switch 9. As a result, the proximity sensor VCXO 10 operates and oscillates at a frequency of 300 MHz, which is four times the overton of the crystal oscillator 11 of 75 MHz. A weak radio wave of this frequency is radiated from the loop antenna 12 as a proximity sensor radio wave. In this case, the oscillation output of the proximity sensor VCXO 10 is modulated by the signal output from the output terminal O2 of the code generator 8.

The code generator 8 generates a code signal as follows. Since the code signal for the proximity sensor needs to be common at least at the same golf course, in this embodiment, the common line of the ID setting switch 29 of the encoder 28 is connected by the transistor switch 30 as shown in FIG. This is achieved by grounding. The transistor switch 30 is provided with an inverted signal of the timer circuit 21 for remote control transmission, that is, the inverter 2.
3 is controlled by the output signal.

In the case of transmitting a proximity sensor signal, the transistor switch 30 is turned on, and the common line of the ID setting switch 29 is set to the ground potential. At this time, the ID input terminal of the encoder 28 is pulled down to the ground potential, and all bits of the ID setting input of the encoder 28 are set to “00 ·
.. 0 ". Even in this case, since the ID code is scrambled and encoded by the encoder 28, the ID code is not modulated by a monotonous code, and there is no problem in identifying an interfering wave.

The encoder 28 continuously outputs the code signal by using a pulse of the periodic pulse generation circuit 25 as a trigger. This trigger pulse period is determined in consideration of a margin for the detection interval of the sensor and battery consumption. The power supply of the proximity sensor VCXO 10 in FIG. 1 is supplied by the transistor switch 9 only in the transmission period T1 shown in the time chart of FIG. 4A and 4B are time charts for explaining the operation of the proximity sensor transmitting unit. FIG. 4A shows the output signal of the periodic pulse generation circuit 25, FIG. 4B shows the output signal of the encoder 28, and FIG. 4C shows the VCXO 10 for the proximity sensor. 3 shows the output signal of the first embodiment.

Next, the operation of the code generator 8 at the time of remote control transmission for controlling the remote control of the golf cart will be described. When the remote control transmission switch 7 in FIG. 1 is turned on,
The line of the input terminal I1 in FIG. 2 becomes active, the periodic pulse generation circuit 20 and the timer circuit 21 are activated, and the AND gate 22 is turned on by the output of the timer circuit. At the same time, the AND gate 26 for generating the code of the proximity sensor is turned off by the inverted signal of the inverter 23, and the operation of the proximity sensor transmission unit is interrupted. From the turned on gate 24, the output pulse of the periodic pulse generation circuit 20 shown in FIG. 5A is supplied to the encoder 28 through the OR gate 27, and the encoder 28 is triggered. At this time, the common line of the ID setting switch 29 of the encoder 28 is
Since it is F, it becomes the power supply potential, and the ID can be set by setting the ID setting switch 29. Therefore, the encoder 28 outputs a code signal including ID information as shown in (d) of the time chart of FIG. 5 for each trigger pulse. This code output is 13.56M
VCXO for remote control controlled by quartz oscillator 14
13 is a modulation signal for FSK modulation. This signal is further multiplied by 3 by the transmission output amplifier 15 and 40.68 MH
It is radiated from the bar antenna 16 as a radio wave of z. Here, FIG. 5B shows an output signal of the timer circuit 21,
(C) shows a trigger pulse applied from the OR gate 27 to the encoder 28.

On the receiving side shown in FIG. 3, 40.68 MH
When the receiver 45 receives the remote control radio wave whose ID of z matches, the receiver 45 demodulates and decodes the received radio wave, and inputs a control signal for starting, stopping, decelerating, etc. of the golf cart to the motor drive control unit 46, The operation of the golf cart is controlled. At the time of remote control transmission, as shown in FIG.
8 to obtain the encoder output shown in (d). Also, the same code is repeatedly transmitted so that the code matching on the receiving side can be confirmed. When the output of the timer circuit 21 times out, the AND gate 24
The switching circuit constituted by the AND gate 26 switches to the proximity sensor side, and returns to the signal transmission state of the proximity sensor.
At the time of the remote control transmission, the trigger pulse of FIG. 5C controls the transistor switch 17 of FIG. 1, activates the remote control VCXO 13 and the transmission output amplifier 15 only during the pulse period of T2, and reduces the consumption of the battery 3. I am trying to do it. The trigger pulse shown in FIG. 5C serves as a control signal for the electronic buzzer drive circuit 18 and causes the electronic buzzer 19 to sound intermittently, thereby allowing the operator to recognize the execution of remote control transmission.

In the above embodiment, a 4-bit one-chip microcomputer can be used as the encoder 28. In this case, a pulse generating circuit, a timer circuit, a gate circuit for mode switching, and the like are used. Since the code generator 8 can be easily realized by the software of the microcomputer, the entire code generator 8 can be replaced with a one-chip microcomputer.

In the above-described embodiment, the case where the present invention is applied to a remote control device of a golf cart has been described. However, the present invention can be applied to a crane, a robot, or the like that is remotely operated wirelessly.

[0024]

As described above in detail, according to the present invention, the radio wave transmitted from the proximity sensor is modulated with a specific code signal and transmitted, so that it is possible to prevent erroneous detection of the radio wave on the receiving side and to reduce the code. In generating the signal, the encoder can use a remote control device such as a remote control device of a golf cart, so that no extra cost is required. In addition, since the remote control transmitting device and the proximity sensor transmitter can be integrated, it is easy to carry and the burden of maintenance management of the device such as a battery can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a remote control transmission device according to one embodiment of the present invention.

FIG. 2 is a block diagram showing a detailed configuration of an encoder according to the embodiment.

FIG. 3 is a diagram showing an outline when the present invention is applied to a golf cart remote controller.

FIG. 4 is a time chart for explaining the operation of the proximity sensor transmitting unit.

FIG. 5 is a time chart for explaining the operation of the remote control transmission unit.

[Explanation of symbols]

 Reference Signs List 6 voltage regulator 7 remote control transmission switch 8 code generator 9 transistor switch 10 VCXO for proximity sensor (voltage controlled crystal oscillator) 11 crystal oscillator 12 loop antenna 13 VCXO for remote control (voltage controlled crystal oscillator) 14 crystal oscillator 15 transmission output amplifier Reference Signs List 16 bar antenna 17 transistor switch 18 electronic buzzer driving circuit 19 electronic buzzer 20 periodic pulse generating circuit 21 timer circuit 25 periodic pulse generating circuit 28 encoder 29 ID setting switch 40 remote control transmitting device 41 remote control receiving antenna 42 proximity sensor radio wave receiving antenna 43 demultiplexing Matching unit 44 Coaxial cable 45 Receiver 46 Motor drive control unit

Claims (1)

(57) [Claims] 1. An encoder for generating a code signal, code generating means for operating the encoder while the power switch is ON to generate a specific code signal, and outputting from the encoder by the code generating means. Means for modulating a proximity sensor transmission radio wave with a code signal to be transmitted and transmitting the modulated signal, a remote control transmission switch, and means for generating a remote control code signal by operating the encoder for a predetermined time in response to operation of the remote control transmission switch. Means for modulating and transmitting a remote control transmission radio wave with a code signal output from the encoder; and, while the encoder is operating in response to the operation of the remote control transmission switch, the code generation means transmits the signal to the encoder. Means for inhibiting input.