JPS6122637Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a warming-up device for radio-controlled equipment that can accurately and easily perform warming-up, so-called revving, which is performed when starting the engine of a controlled object in radio-controlled equipment. It is related to.

A radio-controlled device that remotely controls a model controlled object, such as a model car, model airplane, or model boat, uses radio waves to modulate a high-frequency signal according to the output of, for example, a variable resistor operated by the operator. , which becomes radio waves and is emitted to the receiver mounted on the controlled object. Then, the receiver side demodulates the received radio waves, extracts a signal corresponding to the amount of operation on the transmitter side, and supplies it to a servo motor to drive an operation part such as an engine.

In this case, the transmitter is generally configured as shown in FIG. That is, one cycle of control, that is, a frame cycle, is defined by the output of the variable resistor unit 1 for forming operation signals for channels ch ₁ , ch _{2 .} . . The output of the clock circuit 2 is read by the amplifier section 3 and introduced into the encoder section 4. In this encoder section 4, a channel signal is formed according to each output of the variable resistor section 1, and is introduced into a modulation section 6, where the high frequency signal from the oscillation section 5 is subjected to on-off modulation or frequency modulation. The output is power amplified and emitted from the antenna 7 as a radio wave.

By the way, when it comes to radio-controlled equipment, a model with an engine mounted on it requires a warm-up period called revving before actually starting the controlled object. This is done to warm up the engine faster and improve engine performance. Particularly in competitions and the like, it is important to thoroughly adjust the engine condition through this warming-up before starting actual operation.

In this case, conventionally, warming up is performed by putting the transmitter into operation, manipulating the variable resistor of the engine control channel, for example ch ₁ , and running the engine back and forth from high speed to low speed several times.

Furthermore, in this case, the operator relied on his or her intuition while listening to the engine sound to determine the high-speed rotational position and low-speed rotational position of the engine.

However, the above-mentioned warming-up operation is performed outdoors, and at competition venues, other pilots also perform warm-up operations, so
It is often difficult to accurately hear the sound of your engine. Therefore, it is difficult to expect a reliable warming-up operation. Further, it is quite a troublesome task to operate the variable resistor back and forth several times from the engine's high-speed rotation position to the low-speed rotation position.

Furthermore, if the engine stops for some reason while driving a model car, it may be necessary to drive the engine back and forth between high and low speeds before restarting. However, in this case, there was a problem in that the operator was too far away from the controlled object and could not perform readjustment operations while listening to the engine sound.

The present invention was developed in view of the above-mentioned circumstances, and provides a signal that automatically reciprocates the slot arm, which regulates the rotational speed of the engine, between a preset high-speed rotational position and a low-speed rotational position at an appropriate speed. By generating, automatically,
It is an object of the present invention to provide a warm-up device for radio-controlled equipment that can easily and accurately perform a warm-up operation.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a warming-up device for radio-controlled equipment according to the present invention will be described below with reference to the drawings.

FIG. 2 is a diagram showing the overall configuration of an embodiment of the present invention. The part designated by the general reference numeral 20 is the warming-up device according to the present invention, and the other parts have the same functions as the transmitter section shown in FIG. 1, so they are designated by the same reference numerals.

In other words, the warming-up device of the present invention is
The output of the variable resistor section 1 and the output of the warming-up circuit section are alternately introduced into the transmitter section via a switch circuit section to be described later.

Here, the warming-up device 10 is configured as follows.

First, reference numeral 11 denotes a switching signal generating section that generates a signal for switching between a warming-up operation and a normal control operation using the variable resistor section 1, and is formed by, for example, a contact signal of a switch. The switching signal generated by the signal generating section 11 is then introduced into the timing signal generating section 12 and the switching circuit 13 which switches and outputs the output signal of the variable resistor section 1 and the warming-up signal to the transmitter section. Ru. The timing signal generating section 12 is composed of, for example, an astable multivibrator, and the output thereof and the repeating circuit 1
4, the inverted signal is output to a switching circuit 15 for switching and outputting a signal for alternately rotating the engine of the controlled object at high and low speeds. The switching circuit 15 also receives output signals from a first level setting section 16 and a second level setting section 17, which form level signals for rotating the engine at high and low speeds.

The overall block configuration of the warming-up device 10 is as described above, but individual specific configurations can be configured as shown in FIG. 3, for example.

In FIG. 3, S is a switch that switches between fixed contacts a and b and constitutes the switching signal generator 11, OP ₁ is an operational amplifier, resistors R ₁ to R ₃ , a variable resistor VR ₁ , and a capacitor. C ₁ constitutes an astable multivibrator, and the timing signal generator 1
It becomes 2.

Also, AS ₁ and AS ₂ are analog switches,
It is an analog switch that closes when a "1" signal is applied to the input terminal indicated by the O symbol in the figure and allows the input signal to pass through as is, and opens when a "0" signal is applied to prevent the input signal from passing through. ,
Tr is an inverter that prevents the analog switches AS ₁ and AS ₂ from being closed or opened at the same time, and constitutes a switching circuit 13 together with the analog switches AS ₁ and AS ₂ .

OP ₂ is an operational amplifier forming the inverting circuit 14 together with resistors R ₄ and R ₅ , AS ₃ and AS ₄ are the switching circuit 1
This is an analog switch that forms part 5. VR ₃ ,
VR ₄ includes first and second level setting sections 16 and 17.
This is a variable resistor.

Furthermore, resistors R ₆ and R ₇ are connected to each of the operational amplifiers OP ₁ and OP ₂ in order to operate them with a single power supply.
This is a low resistance for applying a voltage of 1/2 of the power supply voltage Vcc as a virtual zero point to the non-inverting input terminals (+) of OP ₁ and OP ₂ . R ₈ to R ₁₈ are resistors that apply appropriate bias voltages to each of the aforementioned circuits and serve as output circuits for each circuit, and C ₂ to _{C 7} are resistors that are used to prevent high-frequency signals from going around to each circuit. With a capacitor, Vcc
indicates the power supply voltage.

Next, the operation of the circuit shown in FIG. 3 will be explained with reference to the timing diagram shown in FIG. 4.

Now, if the switch S is switched to the fixed contact a side before time to, the resistance R ₈ ,
A voltage approximately equal to the power supply voltage Vcc, that is, a "1" signal is applied to the input terminal marked with an ○ of the analog switch AS ₁ via R ₁₂ , and the analog switch AS ₁
is closed. On the other hand, the base potential of the transistor Tr also becomes close to the power supply voltage Vcc, so this transistor Tr becomes conductive and this transistor Tr becomes conductive.
The collector potential of is approximately the ground potential, that is, the analog switch _AS1 is given a "0" signal and becomes open.

Therefore, regardless of whether analog switches AS ₃ and AS ₄ are open or closed, their output signals are blocked by analog switch AS ₂ .

By the way, the analog switch AS ₁ is the second
Since it is connected to the variable resistor for engine control in the variable resistor section 1 shown in the figure, its output is introduced to the amplifier section 3 of the transmitter section via analog switch AS ₁ to perform normal maneuvering operations. be exposed.

On the other hand, when switch S is switched to the fixed contact b side to perform a warming-up operation, a "0" signal is given to analog switch AS ₁ , which opens it and prevents the output of variable resistor section 1 from passing through. . In addition, the transistor Tr is also cut off, and its collector voltage becomes almost close to the power supply voltage Vcc,
A "1" signal is applied to the analog switch _AS2 to close it.

On the other hand, the non-inverting input terminal (+) of operational amplifier OP ₁ constituting the astable multivibrator is released from the ground potential and starts oscillating.

That is, charging current flows to capacitor C ₁ via variable resistor VR ₁ and resistor R ₁ , and its terminal voltage,
That is, the potential at the inverting terminal (-) of the operational amplifier _OP1 rises as shown in FIG. 4a. In addition, the non-inverting terminal (+) of operational amplifier OP ₁ connects the output voltage to the resistor.
A voltage divided by R ₂ and R ₃ is applied, and while the terminal voltage of the capacitor C ₁ is lower than the potential of the non-inverting terminal (+) (period t ₁ in FIG. 4), the operational amplifier The output of OP ₁ swings to a value almost close to the power supply voltage Vcc, as shown in FIG. 4b.

When the terminal voltage of the capacitor C ₁ exceeds the potential of the non-inverting input terminal (+), the output is inverted, and the output of the operational amplifier OP ₁ becomes close to the ground potential as shown in FIG. 4b. . This state continues until the charge in the capacitor C ₁ is discharged through the low resistor R ₁ and the variable resistor VR ₁ (period t ₂ in Fig. 4), and when this terminal voltage reaches approximately the ground potential, it returns again. The output of operational amplifier OP ₁ is inverted, and the output of the operational amplifier OP 1 is
Oscillation continues as shown in .

The oscillation period T in this case is determined by the resistances R ₁ , R ₂ , R ₃ ,
It is determined by the resistance value of variable resistor VR ₁ and the capacitance value of capacitor C ₁ .

Therefore, by adjusting the variable resistor VR ₁ and changing its resistance value, the oscillation period T can be adjusted to the desired period. This means that the period in which the engine is rotated from high speed to low speed during warming up can be varied.

By the way, the output of the operational amplifier OP ₁ is connected to the resistor R _17
The analog switch AS ₃ repeats opening and closing with the period shown in FIG. 4b. At the same time, the output of the operational amplifier OP ₁ is input to the operational amplifier OP ₂ , where the fourth
The analog switch is inverted as shown in Figure c.
AS ₄ opens and closes repeatedly.

Furthermore, the output Va of the variable resistor VR ₃ is introduced into the analog switch AS ₃ , and the analog switch
Since the output Vb of the variable resistor VR ₄ is introduced in AS ₄ , these outputs Va and Vb are output alternately each time the analog switches AS ₃ and AS ₄ are closed, _and given to.

On the other hand, as mentioned above, switch S is fixed contact b
When switched to the side, the analog switch AS ₂ is closed, and the output changes depending on the oscillation period of the astable multivibrator, as shown in Figure 4d.
Va and Vb are alternately sent to the amplifier section 3.

In this case, the outputs of the variable resistors VR ₃ and VR ₄
Va and Vb are set depending on the type, size, usage condition, etc. of the engine that requires warm-up operation.

That is, if the operating angle of the horn 20 of the servo motor connected to the throttle lever of the engine by a rod is within the range of angle α as shown in Fig. 5a, the outputs Va and Vb can be set arbitrarily within the output range required to drive the horn 20 within this angle range. For example, if the engine is repeatedly driven within the maximum and minimum rotation speed range to perform a warm-up operation, the outputs Va and Vb will be values required to swing the engine to positions _P1 and _P2 , respectively, relative to the neutral position N.

The signal is then amplified by the amplifier section 3, shaped into a channel signal for engine control by the encoder section 4, modulated by the modulation section and amplified by the power of the high frequency signal from the oscillation section 5, and then emitted as radio waves from the antenna 7. be done.

The receiver mounted on the controlled object receives, amplifies and detects the radio waves, and forms drive signals corresponding to the outputs Va and Vb of the variable resistors VR ₃ and VR ₄ on the transmitter side. , which drives the servo motor for engine control.

That is, as shown in FIG. 5b, as time Tm elapses, the horn 20 is driven toward the position _P1 corresponding to the output Va of the variable resistor _VR3 , and the engine throttle opens. And horn 2
When _the analog switch AS ₄ of the warming- _up device shown in _FIG . Since the output is Vb, the horn 20 is driven toward the position _P2 corresponding to the output Vb.

In this way, according to the period T of the astable multivibrator defined by the resistance value of variable resistor VR ₁ in Fig. 3, and within the range defined by the outputs of variable resistors VR ₃ and VR ₄ . This automatically reciprocates and warms up the engine.

Furthermore, if the period T is set relatively long and the horn 20 reaches the position _P1 before the analog switches _AS3 and _AS4 are switched between opening and closing, it remains at that position as shown in FIG. 5c. When the analog switches AS ₃ and AS ₄ are opened and closed while maintaining a constant blaring state, the horn 20 is driven toward the position P ₂ .

In this way, the mode of warming up depends on the condition of the engine mentioned above, etc., depending on the variable resistor.
By adjusting the resistance values of VR ₁ , VR ₃ and VR ₄ , it is possible to set the optimum state.

However, by switching switch S,
This makes it possible to perform a warm-up operation in the optimum state at any time, even for the engine of a controlled object located far away from the transmitter.

By the way, in the above embodiment, an example is described in which the transmitter of the warming-up device is attached to the engine control channel, but it is also possible to configure this as an independent device. That is, in the block diagram shown in FIG. 2, the output of the switching circuit 15 is connected to a transmitter section that can emit radio waves to drive the throttle lever of the engine of the controlled object, and the warm-up operation is performed independently. The point is that the warming-up control radio wave can be emitted while the engine control channel signal formed by the variable resistor section 1 shown in FIG. 2 is stopped.

In addition, the present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with various modifications without changing the gist thereof.

As described above, the warming-up device for radio-controlled equipment according to the present invention is attached to, for example, an engine control channel of a transmitter, and a preset temperature is set when the output of a variable resistor section for engine control is stopped. In this configuration, a signal is formed by alternately repeating two level values at an adjusted period, and this signal is sent to the receiver side as a channel signal for engine control by a transmitter section.

Therefore, with the warming-up device of the present invention, it is possible to immediately and automatically perform engine warming-up operation by, for example, operating a switch, and furthermore, the warming-up mode can be arbitrarily set according to the engine. Therefore, even in a noisy environment such as a competition, an excellent effect can be obtained in that warming-up can always be performed in an optimal condition.

Moreover, to enter the warm-up operation,
It is extremely easy to operate as it only requires a single switch operation.Also, conventionally, warm-up required the operator to use both hands, but since it only requires one hand, the controlled object can now perform other operations. This makes it possible to warm up the vehicle while adding a lot of heat, which has an extremely large effect in terms of improving operability.

[Brief explanation of the drawing]

FIG. 1 is a block diagram for explaining the operation of a radio-controlled transmitter, FIG. 2 is a block diagram for explaining an embodiment of a warming-up device for radio-controlled equipment according to the present invention, and FIG. 3 is a block diagram for explaining the operation of a radio-controlled transmitter. The circuit diagrams of FIGS. 4a to 4d and 5a to 5c, which are circuit diagrams showing an example of the circuit configuration of the embodiment, are diagrams for explaining the operation of the embodiment. 4... Encoder section, 5... High frequency generation section, 6
... Modulation section, 7 ... Antenna, 12 ... Timing signal generation section, 15 ... Switching circuit section, 16 ...
a first level setting section, 17... a second level setting section;

Claims (1)

[Scope of utility model registration request] First and second level setting sections that generate signals of different levels and outputs of the first and second level setting sections are introduced, and the outputs of the first and second level setting sections are alternately switched. a switching circuit section for controlling the switching circuit section, a timing signal generating section for controlling the switching timing of the switching circuit section, and a timing signal generating section for driving an operating section for controlling the rotational speed of the engine of the steered object in accordance with the output of the switching circuit section. A warming-up device for radio-controlled equipment, comprising a transmitter section that forms a signal for the radio control equipment.