JPH03187598A - Transmission system - Google Patents

Abstract

PURPOSE:To transmit data in large quantities and in a short time by using the bit of an ID code part in which an ID code is written in the case of a first frame as a state code part to send a sate code in the second frame of the same number of the bits as a first frame. CONSTITUTION:One frame is constituted of 26 bits, and in the first frame (i), the ID code of 20 bits is written in the ID code part A, and one code constituted of 4 bits is written in the state code part B, and the identification code of 2 bits is written in an identification code part C. Then, in the second frame ii, the state code is written by using the bits corresponding to the ID code part A as a part of the state code part B', and the identifification code to show that it is the second frame ii is written in the identification code part C', and in the case of a transmitter other than the specified one, only the first frame (i) is transmitted, and in the case of the specified transmitter, the first and the second frames (i), ii are transmitted. Thus, a large quantity of the data can be transmitted in a short time.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention uses light,
Security sensors connected using wireless signals such as radio waves,
This relates to a transmission method used when the same system has a plurality of transmitters, such as a transmitter that transmits status data of a disaster prevention sensor and a transmitter that transmits control data based on data input from a QIPAD.

[Prior art] Figure 3 shows the basic configuration of this type of system, and Figure 4 shows the basic configuration of this type of system.
Figure (a) shows the data format of one frame of a conventional transmission signal used in this system, and the frame is transmitted from a plurality of transmitters 1a1. an ID code part A that distinguishes that it is a specific one of la2゜..., 1b1...;
If it is a sensor input transmitter 1ala2..., it is composed of a status code section B consisting of a bit indicating the detection status of the connected sensor 2, a bit indicating the status of the power supply battery of the transmitter, etc.

For example, if the sensor transmitter 1a+ is connected to the sensor 2 consisting of a glass breakage sensor, when the glass is broken, the ID code section A consisting of the ID code of the transmitter,
A reception control device that transmits a one-frame transmission signal to the reception control device 3, which is made up of a status code part B that includes a status code indicating the status of a sensor that detects that the glass is broken, the status of a power supply battery, etc. When the reception section of W3 receives the transmission signal, the reception control device f3 specifies the transmitter from the received ID code of the ID code section A, and recognizes the installation location and the type of the connected sensor 2.

Further, the state of the sensor 2 and the battery state are recognized by the state code of the state code part B, and a predetermined operation is performed according to the state. In other words, all the states are included in the l frame.

On the other hand, in the case of the key human power transmitter 3b+, a person operates the key switch 4, transmits the input data to the reception control device 3, and controls the reception control device 3 according to the input data, so the sensor input It is necessary to transmit a large amount of data compared to the transmitters 1al, la2, . . .

For example, when transmitting a code "19" by inputting it using a key, transmitter 1b+ uses the ID code part A of transmitter 1b in the first frame i as shown in FIG. 4(b).
D code and the data "1" in the status code part B are transmitted, and the I of the second frame ii shown in FIG. 4(c) is transmitted.
I of the transmitter 1b+ in D code part A and status code part B
D code and data 9” are sent, and the third frame i
ID code section A and status code section B of ii.
Indicates the delimitation of character data along with the b+ ID code.
The code data "CR" is sequentially transmitted.

On the other hand, the reception control device 3 sequentially receives "1" in the first frame i, "9" in the second frame 11, and receives "9" in the third frame i.
When the code data of “CR” of ii is received, “1
9” code.

In this case, the reception control device 3 receives each of the first to third frames i to i.
Key human power transmitter 3BL with the ID code included in each
The signal is identified as being sent from

[Problem to be solved by the invention] By the way, as mentioned above, the sensor input transmitters 1a+, la
In the case of a key manual transmitter 1b, which transmits more data than 1..., each character ("1", "9",
For example, as shown in FIGS. 4(b) to 4(d), it is necessary to transmit three frames to which the ID code part A is added for each "CR"), which causes the problem that the transmission time becomes long. Ta.

This indicates that the time from when a key is operated until the reception control device 3 starts operating becomes longer, that is, the response becomes slower.

The present invention has been made in view of the above-mentioned problems, and an object of the invention as set forth in claim 1 is to provide a transmission method that can transmit a large amount of data in a short time, and as set forth in claim 2. An object of the present invention is to provide a transmission method that can transmit a large amount of data in a short time and can easily cope with the amount of data transmitted by the transmitter used.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention according to claim 1 transmits a status code indicating a status from a transmitter in a predetermined format using a wireless signal such as radio waves or light. In a transmission method used in a system in which a transmission signal consisting of one or more frames is transmitted, and a reception control device performs a control operation based on a received status code, one frame is composed of a certain number of bits, The first frame includes an ID code section where an ID code indicating the type of transmitter is written, a status code section where a status code indicating the status is written, and a status code section that identifies whether or not there is a second frame transmitted by a specific transmitter. and an identification code section for writing the identification code to be used.
In the second frame, a status code is written using the bits corresponding to the ID code part as part of the status code part, and an identification code indicating that it is the second frame is written in the identification code. In this case, only the first frame is transmitted, and a specific transmitter transmits the first frame. In the invention according to claim 2, one frame is composed of a certain number of bits, and the first frame includes an ID code section in which an ID code indicating the type of transmitter is written. , consists of a status code section in which a status code indicating the status is written, and an identification code section in which an identification code is written to identify whether or not there is a second frame transmitted by a specific transmitter. In the frame, the above ID
The bits corresponding to the code part are used as part of the transmission order and another identification code part to write another identification code indicating that it is the last frame, and part of the status code part to write the status code. It is characterized in that only frames are transmitted, and a specific transmitter transmits one or more frames after the second frame in addition to the first frame.

[Operation] According to the invention as claimed in claim 1, in the second frame having the same number of bits as the first frame, the I
Since the bits of the ID code section in which the D code is written are used as the status code section for transmitting the status code, it is possible to transmit a large number of status codes in a short time.
Moreover, since the reception control device side can identify whether the transmission signal is the first frame transmission signal or the second frame transmission signal by the identification code in the identification code section, the reception control device can perform processing after completing reception of the first frame. The operation is easy to handle, and the time from inputting data to the result transmitter to receiving control by the receiver is short.

Furthermore, in the invention as claimed in claim 2, when there are a large number of status codes to be transmitted, the number of frames to be transmitted is increased, and the frame transmission order is written as an identification code in the second frame and thereafter, so that many status codes are transmitted from the transmitter. In addition, the reception control device can easily handle the reception process for the first frame and subsequent frames by identifying whether there are subsequent frames and their transmission order.

Example The present invention will be explained below with reference to Examples.

FIG. 1 shows the structure of a transmission signal used in one embodiment. In this embodiment, one frame has a 26-bit structure, and the first
In frame i, a 20-bit ID code is written in the ID code section A, a 4-bit elliptical l code is written in the status code section B, and a 2-bit identification code is written in the identification code section C.

First, the sensor input transmitter 1a1 in FIG. l
In the case of a transmission signal of aw..., only the first frame i is transmitted. In this case, the 2-bit identification code written in the identification code section C is defined as "OO", and the identification code of the key manual transmitter 1 a + + 1 a x ... is "0".
1”.The reception control device 3 has an identification code of “1”.
It recognizes that it is an OOn and performs a predetermined control operation according to the ID code and status code of the first frame.On the other hand, the transmission signal of the key human power transmitter 1b+... is composed of a 5-digit number and a delimiter code "CR". The configuration is as follows. Of course, it is applicable even if the number of digits including the delimiter code "CR" is less than 7 digits.

Now, the key switch 4 of the key human power transmitter 1BL is 1″
When "2", "3", "4", 5n and "CR" are operated, the key manual transmitter 1b.

In this case, a control unit such as a microcomputer (not shown)
When "CR" is detected, write your own ID code in the ID code part A of the first frame i, and write the input 5-digit number in the status code part B of the first frame i, second frame ii, Write the status codes as ■, ■, ■, ■ in "B", and also write the delimiter code "CR" indicating that the status code below this code is invalid (and that the status code before this code is valid). The status code ■ is written in the status code section B of the second frame ii. Here, the status codes from ■ to ■ are the ID code section A of the first frame i.
20 bits are also used as the status code section to write the status code, which is a total of 24 bits that are written in the status code section B° and transmitted.As shown in Figure 1, the identification code of the first frame i is is the sensor input transmitter 1a
, 1a1,... to distinguish it from the first frame i transmitted by the sensor input transmitters 1al, 1a1, etc., and to indicate the existence of the second frame ii, the identification code "OO" of the sensor input transmitters 1al, 1a1...
In order to indicate that the identification code written in the identification code section C° of the second frame ii is the data of the second frame ii of the key human power transmitter 1b,... Place “10”.

Note that the interval time t between the first frame i and the second frame ii is determined by the reception processing of the receiver.
It suffices if there is enough space to allow both frames ii to be received normally.

Now, in the reception control device 3 that receives this transmission signal, the first
The presence of the second frame ii is recognized by the identification code "01" of frame i, and the status code ■
is stored in a memory (not shown), and then when the second frame ii is received, the second frame is
Recognizing that it is the ii-th frame, the codes up to the appearance of the "CR" code, here the status codes 1 to 2, are stored in the memory according to the format of the second frame ii in FIG. After that, the status code stored in memory
A predetermined operation is started based on the data "1" to "5" shown in FIG.

Here, due to disturbances such as noise or fading when the communication medium is electromagnetic waves, only the first frame i is received and the second frame ii is not received, or if the frame received after the first frame i is the first frame Similar to 1 frame i, when the identification code is "01", the previously received data with the identification code "01" is cleared.

If only the second frame 11 is received, the first frame i does not exist in the memory, so the data of the second frame ii is cleared.

In this way, by making the identification codes different between the first frame i and the second frame ii, false alarms and malfunctions will not occur even if only one of the two frames is received.

Now, in the above embodiment, only two frames can be transmitted, but in the embodiment shown in FIG. 2, more frames can be transmitted. In this embodiment, in addition to the identification code of the above embodiment, an identification code section is provided in which an identification code indicating the transmission order is inserted into the first 4 bits of frames after the second frame ii.
The status code section B° after i has a 20-bit configuration in which five status codes can be written.

First, in FIG. 2, the identification code written in the first identification code section C of the first frame i is "01" in the first frame i.
”, and “1” in the identification code section C° after the second frame ii.
0'', the first frame i and the second frame ii and subsequent frames are distinguished by the identification code of the identification code portions c and c''. The identification code written in the second identification code section is composed of 4 bits, the upper 3 bits indicate the transmission order of the frame, and the lower 1 bit indicates whether or not it is the last frame.

In addition, in the case shown in FIG. 2, the identification code in the identification code part of the second frame ii is "oooo", and the identification code in the identification code part of the third frame iii, which is the final frame, is "0011". This indicates that the third frame iii is the final frame.

In this case, the frames after the second frame ii are “000”
~ "111" can be held for a maximum of 8 frames, making it possible to transmit more data than in the above embodiment.

The reception control device 3 that receives the transmission signal of this embodiment recognizes that the data is in this format from the identification code in the identification code part, and identifies the frame using the upper three bits of the identification code in the second identification code part. Recognizes the order and performs control using status code data.

Using this embodiment, if the second frame 11 in FIG. 2 cannot be received due to noise or fading, the continuity of the frame can be checked using the identification code in the identification code section. There is no possibility of incorrect control using the data of the third frame ii.

[Effects of the Invention] As described above, the present invention configures one frame with a fixed number of bits, and the first frame includes an ID code section in which an ID code indicating the type of transmitter is written and a status code indicating the status. It consists of a status code section to be written, and an identification code section to write an identification code for identifying whether or not there is a second frame transmitted by a specific transmitter, and in the second frame, bits corresponding to the ID code section are written. is used as a part of the status code section to write the status code, and an identification code indicating that it is the second frame is written in the identification code, and only the first frame is transmitted except for the specific transmitter, and the specific transmitter So let's move on to the first part. Since the second frame is transmitted, a large number of status codes can be transmitted in a short period of time, and the reception control device uses an identification code to determine whether the transmitted signal of only the first frame is the transmitted signal of the second frame. Since it can be identified by the identification code of the part, the reception control device can easily handle the processing operation after the reception of the first frame is completed, and as a result, the time from data input to the transmitter until the receiver controls reception is shortened. This has the effect that the length can be shortened.

Furthermore, the invention according to claim 2 is characterized in that one frame is composed of a fixed number of bits, and the first frame includes an ID code section in which an ID code indicating the type of the transmitter is written, and a status code section in which a status code indicating the status is written. and an identification code part in which is written an identification code for identifying whether or not there is a second frame transmitted by a specific transmitter, and in frames after the second frame, bits corresponding to the ID code part are written. is used as part of a separate identification code section to write another identification code indicating the transmission order and that it is the last frame, and a status code section to write a status code. The transmitter transmits one or more frames after the second frame in addition to the first frame, so if there are a large number of status codes to be transmitted, the number of frames to be transmitted is increased, and the second frame is transmitted using the transmission order as an identification code. Since the transmitter writes many status codes, it can easily handle the case where the transmitter sends many status codes. Moreover, the reception control device can write the first frame by identifying whether there are subsequent frames and the order in which they are sent. Subsequent reception processing becomes easier, and even if a transmitter that needs to transmit a large amount of data is installed after system construction, it can be handled by simply changing the processing after the first frame has been received. The effect is that it can be done.

[Brief explanation of drawings]

Fig. 1 is a format explanatory diagram of an embodiment of the present invention;
3 is a diagram illustrating the format of another embodiment of the present invention, FIG. 3 is a schematic diagram of the system configuration, and FIG. 4 is a diagram illustrating the format of a conventional frame. A is the ID code part, B, B' are the status code part, c, c'
is the identification code section, D is the identification code section, i is the first frame, ii is the second frame, and iii is the third frame.

Claims (2)

[Claims] (1) A transmitter transmits a status code indicating the status using a wireless signal such as radio waves or light for one or more frames in a predetermined format, and the reception control device receives a status code based on the received status code. In a transmission method used in a system that operates under control, one frame consists of a certain number of bits, and the first frame has an ID code section in which an ID code indicating the type of transmitter is written, and a status code indicating the status. It consists of a status code section to be written, and an identification code section to write an identification code for identifying whether or not there is a second frame transmitted by a specific transmitter, and in the second frame, bits corresponding to the ID code section are written. is used as a part of the status code section to write the status code, and an identification code indicating that it is the second frame is written in the identification code, and only the first frame is transmitted except for the specific transmitter, and the specific transmitter Here, a transmission method is characterized in that the first and second frames are transmitted. (2) A transmitter transmits a status code indicating the status using a wireless signal such as radio waves or light for one or more frames in a predetermined format, and the reception control device receives the status code based on the received status code. In a transmission method used in a system that operates under control, one frame consists of a certain number of bits, and the first frame has an ID code section in which an ID code indicating the type of transmitter is written, and a status code indicating the status. It consists of a status code section to be written, and an identification code section to write an identification code for identifying whether or not there is a second frame transmitted by a specific transmitter. Corresponding bits are used as part of the transmission order and another identification code section to write another identification code indicating that it is the last frame, and as part of the status code section to write the status code, and only the first frame is transmitted by devices other than specific transmitters. However, a transmission method is characterized in that a specific transmitter transmits one or more frames after the second frame in addition to the first frame.