JPH0444478B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a remote control switch device, and particularly to a remote control switch device that turns on or off an electric circuit of a target object by radio control.

[Conventional technology]

In recent years, remote control devices that use infrared rays have become particularly popular. These devices are
In both cases, by pulse-coding the control signals, advanced signal processing technology enables highly accurate and quick remote control (remote control) of multiple devices of different models in the same location without mutual malfunction. It is becoming more and more common.

[Problem that the invention seeks to solve]

However, in this conventional example, when the number of remote control devices increases, there is no compatibility of the signal transmitting means, so a signal transmitting means is required for each device, which makes management complicated.

[Purpose of the invention]

The present invention improves the disadvantages of the conventional example, and in particular, even if the transmitting means outputs different control signals, if they have the same signal conveying means such as infrared rays, they can immediately receive the control signals. The object of the present invention is to provide a remote control switch device that controls a predetermined load on and off (NO/OFF) using the same method.

[Means for solving problems]

In the present invention, a transmitting means such as infrared rays that outputs a plurality of control signals with a predetermined repetition period T _P ;
In a remote control switch device comprising a receiving circuit that receives the output from the transmitting means and converts it into an electrical signal, and a switch controlling means that switches and controls a predetermined switch circuit according to the output of the receiving circuit, the switch controlling means consists of a waveform shaping circuit and a signal holding circuit that operates at the rising and falling timings of the output signal from the waveform shaping circuit and outputs a predetermined switch-on or switch-off signal. The pulse width is defined as the repetition period of the pulse width Tα portion of the reader code, which is the first signal waveform of the received signal with a fixed period input to the waveform shaping circuit.
The configuration is such that it is set larger than T _P. This aims to achieve the above-mentioned purpose.

[First Embodiment] A first embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 indicates a transmitting means for outputting a predetermined optical signal such as infrared rays, and reference numeral 2 indicates a receiving circuit comprising a phototransistor or the like. In this embodiment, the transmitting means 1 is one that outputs an infrared pulse signal corresponding to the signal shown in FIG. 31.

In this FIG. 3 1, α indicates a reader code, and the output time Tα of this reader code α is 9 [ms]
The one with a repetition period T _P =108 [ms] is used. Also, the β part indicates a custom code, and the γ
The part indicates the data code. All of these are predetermined control contents (for example, channel selection information of a television receiver) for specific control objects.
have.

The receiving circuit 2 converts the optical signal as it is into an electrical signal shown in FIG. 3 and outputs it to the switch control means 3.

This switch control means 3 is comprised of a waveform shaping circuit 4 and a signal holding circuit 5 in this embodiment. Of these, the waveform shaping circuit 4 is composed of a storage circuit section 41 and an amplification section 42, as shown in FIG. The memory circuit 41 includes a series circuit of a diode D ₁ and a resistor r forming part of a charging circuit for the capacitor C, and a series circuit of a diode D ₂ and a resistor R forming a discharge circuit for the capacitor C as well. It is equipped with These charging circuits and discharging circuits are mutually connected in parallel as shown. The waveform shown in FIG. 32 is output for the pulse signal shown in FIG. 31 mentioned above. In this FIG. 3 2, T ₁ is the charging time (T ₁ = r・C
[seconds]), and T ₂ indicates the memory retention time during discharge (T ₂ =R·C [seconds]). Among these, T ₁ is
It is set larger than the single pulse width (0.5 ms) of the custom code and data code described above, and smaller than the pulse width (T=9 ms) of the leader code α. Therefore, the storage circuit 41 in this embodiment sequentially integrates and stores the input signals, thereby outputting a waveform M characterized by the leader code α as shown in FIG. It's getting old. The output signal M of the storage circuit 41 is inputted to the amplification section 42 which actually has an amplification function and functions as a signal level setting means for outputting a signal at a predetermined level. That is, the signal is amplified and waveform-shaped by the amplifying section 42 to obtain a waveform as shown in FIG. 3, and is sent to the signal holding circuit 5.

Here, the memory retention time T ₂ is the reader code α
For the period T _P (=108 [ms]), T _P − (T〓−
_T1 ) or higher. If T ₁ ≒ 0, then T ₂
＞T _P −T〓=108−9=99 [ms]. In this case, since T is the output of the waveform shaping circuit 41 during reception, the hold time of the switch circuit output from the signal hold circuit will be set to be longer than T _P. . In this way, by receiving the repeated input of the reader code α, the output δ of the amplification unit 42 can be increased even if it is 108
Even if there are repeated signal inputs with a period of [ms], the output will not be intermittent, but will be a constant output with a width proportional to the number of inputs. Therefore, even if the aforementioned storage circuit 41 inputs and stores a large number of custom codes β and data codes γ, the amplifier 42 is not affected by these signals in any way. As a result, the signal received by the receiving circuit 2 is α
If the signal is not equivalent to , the waveform shaping circuit 4 will not output any signal, and malfunctions due to so-called noise are almost completely eliminated. In addition, the upper limit of _T2 was experimentally found to be appropriate at the operator's manual operation speed of 200 to 500 [ms].

In this embodiment, the signal holding circuit 5 is constituted by a flip-flop circuit that turns on or off at the rising edge of an input signal. The output signal of this signal holding circuit 5 is directly transmitted to the switch control means 3.
is sent to the switch circuit 6 as the output of the load 10.
It serves to connect or disconnect the power supply circuit.

As described above, according to the first embodiment, since the infrared transmitting means 1 uses only the first received infrared signal even if it is for another device, No matter how much different information it has, it has the advantage that it can very easily turn on or off a power circuit such as a light load, as shown in FIG.

[Second Embodiment] Next, a second embodiment will be described based on FIG. 5. The embodiment shown in FIG. 5 differs from the embodiment shown in FIG. The configuration includes a dimming control section 12 for controlling the light intensity. The control level of this dimming control section 12 is configured to be changed in accordance with the magnitude of the output duration time of the output signal δ of the waveform shaping circuit 4 described above. The other configurations are the same as those of the first embodiment described above.

Even in this case, in addition to having the same functions and effects as those of the first embodiment described above, there is an advantage in that an electric light that has been turned on once can be repeatedly dimmed.

[Third Embodiment] Next, a third embodiment will be described based on FIGS. 6 and 7.

In this embodiment, in the first embodiment described above,
It is characterized in that a differentiating circuit 4A is provided between the waveform shaping circuit 4 and the signal holding circuit 5. In this case, the output signal of the differentiating circuit 4A becomes a pulse signal of δ _P1 and δ _P2 as shown in FIG. 72. The rectangular wave in FIG. 1 indicates the output of the waveform shaping circuit 4. The other configurations are the same as those of the first embodiment described above.

Even in this case, the same effects as in the first embodiment described above are provided.

In each of the above embodiments, the operation of the signal holding circuit 5 is switched at the rising timing of the signal δ, but the operation of the signal holding circuit 5 is changed at the falling timing of the signal δ. It's okay. Further, in the above embodiment, the reader code α is focused on, but the reader code α does not necessarily have to be used. The waveform shaping circuit 4 may be operated on other signals as long as they function equally well.

〔Effect of the invention〕

Since the present invention is configured and functions as described above,
According to this, no matter what kind of remote control device the transmitting means is, if it outputs infrared pulses, it can be used immediately as a transmitting means, and therefore when this device is used, it can be used to turn on and off electric lights. To provide a completely unprecedented remote control switch device that can share control of televisions and other equipment, etc., by a single transmission means, and therefore makes handling of remote control equipment easy. be able to.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention;
FIG. 2 is a circuit diagram showing a specific example of the waveform shaping circuit in FIG. 1, FIG. 3 is a diagram showing the operation of FIGS. 1 and 2, FIG.
The figure is a block diagram showing the second embodiment, and FIG. 6 is a block diagram showing the third embodiment.
A block diagram showing the embodiment, FIG. 7 is an explanatory diagram of the operation of FIG. 6. DESCRIPTION OF SYMBOLS 1... Transmission means, 2... Receiving circuit, 3... Switch control means, 4... Waveform shaping circuit, 5... Signal holding circuit,
6...Switch circuit, α...Reader code.

Claims (1)

[Scope of Claims] 1. A transmitting means such as infrared rays that outputs a plurality of control signals with a predetermined repetition period _TP , a receiving circuit that receives the output from the transmitting means and converts it into an electrical signal, and a receiver. In a remote control switch device comprising a switch control means for switching and controlling a predetermined switch circuit according to the output of the circuit, the switch control means is connected to a waveform shaping circuit and a rising and falling edge of an output signal from the waveform shaping circuit. a signal holding circuit that operates at the falling timing and outputs a predetermined switch-on or switch-off signal, and a signal holding circuit that outputs a predetermined switch-on or switch-off signal; A remote control switch device characterized in that the pulse width Tα portion of the leader code, which is the first signal waveform of the signal, is set to be larger than the repetition period _TP .