JPH0787623B2 - Wireless system multiplex transmission method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a multiplex transmission method of a wireless system using an optical signal that can be combined with a remote control system for time division multiplex transmission.

[Background Art] A transmitter having a unique address and a plurality of receivers for receiving wireless signals composed of address data transmitted from the transmitter, control data for load control, etc. are provided, and time division from the transmitter is provided. In a wireless system in which the receiver that receives the multiplexed wireless signal and has the same address controls the load based on the control data following the address data, the signal when transmitting the wireless signal from the transmitter to the receiver The reverse collation in the format was performed as follows. That is, as shown in FIG. 6A, a head pulse H such as a start pulse, a custom code C including address data, a data code D for setting control contents, a reverse custom code, and a reverse data code. There is. Here, the inverted custom code and the inverted data code are used after the head pulse H is detected. This is because the parity check is performed and the parity check is performed. Further, as shown in FIG. 6B, the head pulse H, the custom code C, the inverted custom code, the data code D, and the inverted data code may be arranged in this order. In the case of the format as described above, the reception process is performed by regarding the interval between the first head pulse H and the next head pulse H as one frame (A portion in FIG. 6A). Therefore, if the data of the custom code C (or the data code D) of one frame becomes an error, the entire one frame is determined to be an error, the next signal is waited for, and the next signal (the signal after the next head pulse H) is transmitted. If it is correct, it is received and processed. Even if an error occurs in the continuous format, it is difficult to specify the position of each code (C, D,). At this time, if the amount of information is large, 1
When the frame time becomes long and an error occurs, the motion responsiveness becomes slow. In particular, when the lighting load is controlled by a wireless signal by remote control, there is a problem that an error is likely to occur due to noise.

[Object of the Invention] The present invention has been provided in view of the above-mentioned points, and even if a data error occurs in a signal, the error position is clarified, and the reception processing corresponding to the error position is performed. It is intended to provide a multiplex transmission method of a wireless system, which is intended to prevent the operation response from being delayed even if the above occurs.

DISCLOSURE OF THE INVENTION (Structure) The present invention includes a transmitter having a unique address, and a plurality of receivers for receiving a wireless signal including address data transmitted from the transmitter, control data for load control, and the like. In a wireless system in which a receiver having a matching address by receiving a time-division-multiplexed wireless signal from a transmitter controls a load based on control data following address data, data of the wireless signal is transmitted. , A custom code for setting an address, a data code for setting the control contents, a reverse custom code and a reverse data code for detecting the presence of an error by taking the reverse data of these custom code and data code There is a pause between the code and the inverted custom code to allow custom code or data If data errors over de occurs and is characterized next rest period data code, inverted custom, data code and the next head pulse and custom, that it has to receive processed by the data code.

(Example) Hereinafter, the Example of this invention is described with reference to drawings. First, a wireless system using optical communication such as infrared rays will be described. FIG. 2 shows a schematic configuration diagram of the entire wireless system, and a plurality of transmitters 1 for optical transmission are provided. Optical transmission code (wireless signal) from transmitter 1.
There are also provided a plurality of satellite receivers 2 for receiving the.
From the transmitter 1, for example, control data for controlling on / off of the lighting equipment is transmitted as a fourth transmission code together with address data.
An optical wireless signal as shown in FIG. 4A is transmitted.
The transmission code of this optical wireless signal is, as shown in FIG. 5A, a head pulse H such as a start pulse,
A custom code C including address data, a data code D for setting control contents, a pause period S ₁ , a reverse custom code, and a reverse data code. The custom code C is 10 bits C _{0 to} C _{9 as} shown in FIG. 5 (b).
Consists, the bit C ₉ of the upper is 0 or 1, when whether to other system operations, such as a remote control system of division multiplex transmission, or is to select whether to perform a separate operation in a wireless system. Lower 9 bits C ₀ ~
C ₈ is an arbitrary setting, and an address is set. Fifth
Figure (c) shows the signal format of the data code D,
It consists of 8 bits D _{0 to} D ₇ . This data code D is an arbitrary setting, and data such as on / off of a load and dimming control in the case of an illumination load is set. Specifically, as shown in FIG. 3, the transmitter 1 transmits an address setting unit 17 for setting an address, a signal processing unit 18 for creating a transmission code, and a transmission code from the signal processing unit 18 as an optical wireless signal. It is composed of a light emitting portion 19 and the like formed of a light emitting diode and the like.

On the other hand, a satellite receiver 2 that receives an optical wireless signal
Is configured as follows. That is, as shown in FIG. 2, the optical wireless signal from the transmitter 1 is received and the PIN is received.
FIG. 4B shows an optical receiver 3 including a photoelectric element such as a diode, a tuning circuit 4 having a tuning function for detecting a carrier wave of an output signal from the optical receiver 3, and an output of the tuning circuit 4. The satellite receiver 2 is composed of the baseband conversion unit 5 and the like for converting such a baseband signal.

The baseband signal from the satellite receiver 2 is sent out on a dedicated signal line 6 and transmitted to a system receiver 7 and a plurality of individual receivers 11 connected to the signal line 6.
The system receiver 7 receives the baseband signals from the satellite receiver 2 all together, and as shown in FIG.
A receiving unit 8 for receiving a baseband signal, a setting unit 10 for selecting whether the operation is system or individual as described above, and address data and control for converting the baseband signal into a binary parallel signal by the receiving unit 8. It is composed of a system interface 9 for inputting data. This system interface 9 is the signal line 34 of the multiplex transmission control system.
And is processed according to the procedure on the side of the central control device 31. Only the signal format set by the receiving unit 8 of the system receiver 7 is extracted from the base band signal, the setting unit 10 determines whether the system operation or the individual operation is performed, and the received address data and control data are received from the receiving unit 8. Output to the system interface 9.

As shown in FIG. 2, the individual receiver 11 includes a receiving unit 12 that receives a baseband signal from the satellite receiver 2, an address setting unit 13 that sets a unique address for each,
It is composed of a load interface 14 for driving a load control relay and the like according to control data. That is, in this individual receiver 11, the baseband signal and each individual receiver 11
When the address is matched with the set address, the load interface 14 drives the load control relay or the like to control the load 15 such as the lighting fixture. A series circuit of a contact 14a of a relay driven by the load interface 14 and a load 15 is connected in parallel to the power supply 16.

Then, the optical wireless signal transmitted from the transmitter 1 is received by the nearest satellite receiver 2, only the signal of the frequency determined by the tuning circuit 4 is detected, and the baseband converter 5 converts it into a baseband signal. It is converted and transmitted to each of the receivers 7 and 11 through the wired signal line 6. If the upper bit C ₉ of the custom code C of the transmission code selects the individual operation, the system receiver 7 does not respond and the individual receiver 11
Is the target. The address of the baseband signal is compared in each individual receiver 11, and if it matches the set address, the load interface 14 drives the relay based on the control data to control the load 15. Here, if the custom code C of the optical wireless signal from the transmitter 1 selects the system operation, the system receiver 7 will respond. That is, the address and control data (custom code C, data code D) obtained by converting the baseband signal into a binary parallel signal are input to the system interface 9 and processed according to the procedure on the side of the multiplex transmission control system.

Next, the gist of the present invention will be described. As shown in FIG. ₁ , head pulse H ₁ , custom code C ₁ , data code D ₁ , rest period S ₁ , inverted custom code ₁ , inverted data code from transmitter 1 to receivers 7 and 11 respectively.
₁ , the code arranged in the order of the rest period S ₂ is set as one frame,
Furthermore, the head pulse H ₂ continuously, custom code C _2, data codes D _2, are to be transmitted following a rest period S ₁ ....... When the receiving process is performed, B shown in FIG. 1 is considered as one frame. Here, when a data error occurs in the one-frame custom code C ₁ or the data code D ₁ shown in B, the C ₁ D ₁ portion becomes a data error.
The data error in the custom code C or the data code D is detected, for example, as follows. In other words, the bit is set to the bit C ₈ of the custom code C and the bit D ₇ of the data code D to perform the parity check
When the custom code C and the data code D are received, an error of each code is detected each time. Conventionally, the entire 1 frame B including the next inverted custom code ₁ etc. is judged as an error and the next head pulse is detected.
Although the reception processing was performed by waiting for signals such as H ₂ and custom code C ₂ , in the present invention, the pause period S ₁ next to the data code D _{1 in} which the data error occurred is used to make the pause period S ₁ , The inverted custom code ₁ , the inverted data code _{1, the} next head pulse H ₂ , the custom code C ₂ and the data code D ₂ are received and processed as one frame B ′. Therefore, conventionally, when a data error occurs in the data code D ₁ or the like, it is judged that the entire 1 frame including the inverted custom code ₁ or the like is an error, and the reception processing is performed to delay the operation response. the provided rest period S _1, this rest period S ₁
To next reverse custom code ₁ , reverse data code
₁ and the next head pulse H ₂ , custom code C ₂ , data code D _{2 and the} like are received as one frame, the operation response is not delayed. Then, by receiving the signal of the one frame, the head pulse length, If the pause period length, the number of pulses, etc. are matched, the received signal is determined to be correct.

[Advantages of the Invention] As described above, the present invention includes a transmitter having a unique address, and a plurality of receivers for receiving wireless signals including address data transmitted from the transmitter, control data for load control, and the like. In the wireless system, the receiver having the same address when receiving the time-division-multiplexed wireless signal from the transmitter controls the load based on the control data following the address data. Are arranged in the order of the custom code for setting the address, the data code for setting the control content, the reverse custom code and the reverse data code for detecting the error data by taking the reverse data of the custom code and the data code, and Since there is a pause between the data code and the inverted custom code, If a data error occurs in the system code or data code, the custom code and data code in this part will result in a data error. period,
The inverted custom code, the inverted data code, and the next head pulse, custom code, and data code are received and processed as one frame. Therefore, conventionally, when a data error occurs in the data code, the inverted custom code, etc. In contrast to the case where the entire one frame is judged to be an error and reception processing is performed to delay the operation response, a pause period is provided and the next inversion custom code from this pause period,
Since the inverted data code, the next head pulse, the custom code, the data code, and the like are received and processed as one frame, the operation response is not delayed.

[Brief description of drawings]

FIG. 1 is a signal format of an embodiment of the present invention, FIG. 2 is a schematic block diagram of a wireless system of the above, FIG. 3 is a block diagram of a transmitter of the same, and FIGS. FIGS. 6 (a) and 6 (b) show a conventional signal format. 1 is a transmitter, 2 is a satellite receiver, 7 is a system receiver, and 11 is an individual receiver.

Claims (1)

[Claims] 1. A transmitter comprising a transmitter having a unique address, and a plurality of receivers for receiving wireless signals composed of address data transmitted from the transmitter, control data for load control, and the like. In a wireless system in which a receiver that receives a wireless signal transmitted by division multiplex and has a matching address controls the load based on control data following the address data, a custom code for setting the address of the data of the wireless signal , The data code that sets the control content, the reverse custom code and the reverse data code to detect the error by taking the reverse data of these custom code and the data code, and arrange them in the order of the above data code and the reverse custom code. Multiplex transmission of a wireless system characterized by being provided with a pause period Method.