JPS6313587B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-channel remote control system.

This type of multi-channel remote control system divides the time series into multiple unit times, allocates one frequency signal among multiple types of frequency signals to each unit time, creates an address information signal by combining these frequency signals, and creates an address information signal by combining these frequency signals. A frequency signal assigned to an appropriate unit time of the address information signal is attached with output information and transmitted from the transmitter 1 to the receiver 2. FIG. 1 shows a circuit block of a multi-channel remote control system. In this example, an address information signal is created by a combination of two types of frequency signals ₁ and ₂ , and is received by the front end 3 of the receiver 2.
The address information signal amplified by amplifier 4 has a frequency
The frequency signals ₁ and 2 are discriminated by a band pass filter 5 ₁ that passes frequency ₁ and a band pass filter _{5 2} that passes frequency ₂ , and the reception address is discriminated by a signal processing unit 6 formed of a CPU or the like. Ru. At this time, when the address set by the address setting unit 7 and the receiving address match, the output information is taken in and the receiver 2 selectively controls the load 8 such as a buzzer based on the output information. Here, since it is a combination of two types of frequency signals ₁ and ₂ , there are also two types of output information, and two types of loads 8 ₁ and 8 ₂ are selectively controlled. FIG. 2 is a block diagram of a conventional signal processing section 6. As shown in FIG. That is, the frequency signals ₁ and ₂ output from the bandpass filters 5 ₁ and _{5 2} are input to the signal input circuit 6 ₁ and are digitized to operate the shift register 6 ₂ . The contents of the shift register ₆₂ are compared with the set address set in the address setting section 7 and stored in the memory ₆₃ via _the address input circuit ₆₇ , and if they match, the shift register is Based on the output information read from the contents of ₆₂ , the output circuit ₆₅ or ₆₆ is operated to control the load ₈₁ or ₈₂ . By the way, in this conventional system, after the received input signal is interrupted, in other words, after a certain period of time (for example, one address information time) from the input of the final input signal, the output circuit 6 ₅
Or the control output from ₆ had stopped. As a result, there is a quick response to the received input signal, but if the input signal is not input in a complete form due to factors such as noise, the control output will be intermittent each time, resulting in a lack of safety and reliability depending on the load. It was hot.

The present invention has been made in view of the above-mentioned drawbacks.
The purpose is to provide a multi-channel remote control system that can provide quick response and reliability to control outputs depending on the application of the load to be controlled.

The present invention will be explained below with reference to Examples. FIG. 3 shows an embodiment of the circuit corresponding to the signal processing section 6 of the circuit shown in FIG _.
5 _{and 2} perform the same operations as in the conventional example shown in FIG. 1, so their explanations will be omitted. Note that the transmitting signal is a radio wave signal corresponding to the circuit shown in Figure 1, but media such as optical beam signals, ultrasonic waves, power line carrier waves, etc. may also be used, and in this case, part of the receiving section, transmitting section, etc. may be changed. However, the essence remains unchanged.

Now, in the signal processing section 6, when the comparison circuit ₆₄ matches the address judgment, the output information is discriminated by the output information discrimination circuit ₆₈ , which is the next stage of the comparison circuit ₆₄ , and the discrimination result is determined by the load ₈₁ (for example, if the If the output information of the indoor notification load required), the output time control circuit 6 ₉
The control output time of the output circuit 6 ₅ is controlled to stop after elapse of, for example, one address information signal time from the last received input signal, and the determination result is determined by the load 8 ₂ (e.g., for the doorbell where reliability (safety) is required). (output information of a load), the output time control circuit 6 ₁₀ controls the output time of the output circuit 6 ₆ so as to stop the control output time after elapse of, for example, 3 address information signal times from the last received input signal. . The signal input circuit 6 ₁ , shift register 6 ₂ , address input circuit 6 ₇ , and memory 6 ₄ operate in the same manner as in the conventional example shown in FIG.

However, in the present invention, an output time control function is added to the receiver to set the time from when the final signal is received until the control output stops according to the type of output information determined, so noise and masking can be avoided. By extending the control output time in response to load control that requires reliability even when the received input signal is missing due to a situation such as a lack of received input signal, the output will not stop as long as the correct signal is input within the output time. It can be continued, improving safety and reliability,
In addition, if the load is a signal signal that requires quick response, it can fully perform its role by setting the output time of the control signal short. This has the effect that the output time can be selected.

[Brief explanation of the drawing]

FIG. 1 is an overall circuit block diagram of a multi-channel remote control system, FIG. 2 is a circuit block diagram of a conventional signal processing section, and FIG. 3 is a circuit block diagram of a signal processing section according to an embodiment of the present invention. 1 is a transmitter,
2 is a receiver, 6 is a signal processing section, 6 ₈ is an output information discrimination circuit, 6 ₉ and 6 ₁₀ are output time control circuits, and ₁ and ₂ are frequency signals.

Claims (1)

[Claims] 1 The transmitter transmits the address information signal created by time-sharing multiple unit times and allocates one frequency signal among the multiple types of frequency signals to each unit time, and the receiver transmits each of the received address information signals. A multi-channel remote controller that selectively detects each frequency signal with a filter corresponding to each frequency signal to determine the address, and also determines the output information contained in the same frequency signal in the address information signal, and controls the load according to this output information. 1. A multi-channel remote control system, characterized in that the receiver is provided with an output time control function that sets the time from when the final signal is received until the control output stops according to the type of output information determined.