JP3174246B2 - Monitoring device and information transmitting / receiving device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information transmitting / receiving apparatus that uses destination identification information of transmission information which is transmitted after being copied and branched, for controlling reception of response information returned from the destination. 2. Description of the Related Art Some large-scale apparatuses such as a communication system include a plurality of printed boards, which are controlled by a single control circuit. In such a configuration, when a control signal from the control circuit is copied and branched to a plurality of printed circuit boards and transmitted, it is necessary to avoid collision and erroneous reception of response signals from the plurality of printed circuit boards.

[0002]

2. Description of the Related Art FIG. 10 shows the configuration of a conventional information transmitting / receiving apparatus. Reference numeral 100 denotes a control panel, which corresponds to the control circuit described above, and includes 102-1, 102-2, 102-3, and 102.
Reference numeral -4 denotes a controlled panel, which corresponds to the above-mentioned printed circuit board.
The control panel 100 sends a control signal to the signal branching / aggregating panel 101. The signal branching / aggregating board 101 is controlled board 102
-1, 102-2, 102-3, 102-4 Data branching unit 104 for copying and branching a control signal to be transferred to, and responses from controlled boards 102-1, 102-2, 102-3, 102-4 And an OR section 106 for receiving a signal.

[0003] From the control panel 100 to the controlled panels 102-1, 1
When the control signals are transmitted to 02-2, 102-3, and 102-4, the control signals are copied and branched by the data branching unit 104 into control signals for the number of controlled boards. The data format of the control signal includes an address number and transmission data (see FIG. 11). The address numbers added to one control signal are the controlled boards 102-1, 102-2,
This is the address number of any one of the controlled boards 102-3 and 102-4.

[0004] The copied and branched data signal is transmitted to each controlled board 102-1, 102-2, 102-3, 102-4.
Transferred to Each controlled panel 102 that has received the data signal
-1, 102-2, 102-3, and 102-4 analyze the address signal and determine that the received data signal is destined for itself when the address signal matches the address signal assigned thereto. take in.

[0005] the control panel yelling take the data signal, returns a response signal to the control panel 100. The response signal includes an address signal and data (see FIG. 11). Control panel 10
0 receives the response signal through its OR unit 106.

[0006]

When the transmission and reception of the data signal and the transmission and reception of the response signal as described above are normally performed, no problem occurs.

However, if there is a second controlled board that has erroneously analyzed the address signal in addition to the first controlled board that has correctly analyzed the address signal, the first controlled board and the second controlled board have not. Response signal from the controlled panel of the control panel 10
Since the response signal is returned to 0, a collision of response signals occurs in the OR section 106 and an erroneous response signal is received. There is no means for avoiding such a collision in the conventional device.

The above-mentioned collision occurs when a response signal is returned from two or more controlled boards at the same time. However, a response signal is output from two or more controlled boards at different times. In the case of being returned, the above-mentioned collision does not occur. However, if a response signal from the controlled panel that erroneously responds to the correct response signal is returned early or late, the wrong response signal will be received early or late. Therefore, in the conventional device, reception of an erroneous response signal cannot be avoided.

Further, there is no means for specifying when the above-mentioned collision or erroneous reception has occurred. The present invention has been made in view of such technical problems, and a monitoring device and an information transmitting / receiving device capable of achieving collision of response signals from a controlled side to a control side, erroneous reception thereof, and their identification. Its purpose is to provide.

[0010]

Figure 1 [Means for Solving the Problems] shows the principle block diagram of the invention of claim 1, wherein. FIG. 2 is a block diagram showing the principle of the invention according to claims 2 and 3 .

According to the first aspect of the present invention, as shown in FIG. 1, transmission from a transmitting apparatus including identification information unique to a controlled apparatus is performed.
The transmission information obtained by copying and branching the communication information by the number of controlled devices by the branching device 2 is transmitted to a plurality of controlled devices, and the controlled device 4-i (i is 1, 2) having recognized the identification information. , ...
-, system returning response information to the transmitting apparatus from the N)
The monitoring information of the identification information contained in the transmission information.
Information from the plurality of controlled devices corresponding to the identification information.
A signal output unit 12 to output the invalid signal for the no response information from the controlled device, detection instrumentation for outputting a detection signal in response to the response information from the controlled device of the invalid signals corresponding
10 is provided .

According to the second aspect of the present invention, as shown in FIG. 2, transmission information including identification information unique to a controlled device is obtained by copying and branching by the number of controlled devices by the branching device 2 of the transmitting device. The transmitted information is transmitted to a plurality of controlled devices, and the controlled device 4-i (i is 1, 2,...,
N), in the information transmitting / receiving device that returns response information to the transmitting device, the identification information of the transmission information is extracted, and a valid signal for response information from the controlled device corresponding to the identification information, and the identification information does not correspond to the identification information. a signal output unit 12 that outputs to the respective next transmission information invalid signal and the relative response information from the controlled device is generated, only the response information from the controlled device of the active signal corresponding in response to said enable signal And a detection device 10 that outputs a detection signal in response to the invalid signal and response information from the controlled device corresponding to the invalid signal. I do.

The invention according to claim 3 is as shown in FIG.
3. The information transmitting / receiving apparatus according to claim 2, wherein
The signal is a low level or a high level of a binary signal;
The invalid signal is a high level or a low level of a binary signal,
The receiving device has a receiving circuit for each of the controlled devices,
Each of the receiving circuits is responsive to a valid signal of the binary signal.
Response information from the controlled device corresponding to the valid signal
And the detecting device detects each of the controlled devices.
And each of the detection circuits is configured to invalidate the binary signal.
Signal and response information from the controlled device corresponding to the invalid signal.
The detection signal is output in response .

[0014]

According to the first aspect of the present invention, a plurality of controlled devices are provided.
The transmission information is copied and branched to the units 4-1 to 4-N and transmitted.
At this time, the identification information of the transmission information is extracted by the signal output device.
From the controlled device that does not correspond to the identification information extracted by
An invalid signal for the answer information is transmitted next from the signal output device 6.
Output until information is generated .

Therefore, an erroneous response to the transmission information is made.
Based on the response information and invalid signal from the controlled device,
A detection signal is generated representative of the controlled device that responded. this
Using the detection signal to generate response information from multiple controlled devices
It is possible to monitor whether or not a collision has occurred .

According to the second aspect of the present invention, when transmission information is copied and branched to a plurality of controlled devices 4-1 to 4-N and transmitted, identification information of the transmission information is extracted by the signal output device. The valid signal for the response information returned from the controlled device corresponding to the extracted identification information and the invalid reception for the response information from the controlled device not corresponding to the identification information are transmitted from the signal output device 6 to the next transmission information. Is output until is generated.

Therefore, only the response information from the controlled device that correctly responded to the transmission information is received by the receiving device 8, and the response information returned from the controlled device that erroneously responded is not received. It is possible to avoid collision of response information and erroneous reception of response information. A detection signal is output from the detection device in response to the invalid signal and response information from the controlled device corresponding to the invalid signal. The output detection signal detects the collision without causing a collision and specifies the controlled device that caused the detection.

According to a third aspect of the present invention, the valid signal and the invalid signal are binary signals, the receiving device is provided with a receiving circuit for each controlled device, and the receiving circuit responds to the valid signal of the binary signal. And a detection circuit is provided for each of the controlled devices, and each of the detection circuits is
A configuration is made to respond to the invalid signal of the value signal and the response information from the controlled device corresponding to the invalid signal, so that the same operation as in claim 2 is caused, thereby avoiding collision of response information and erroneous reception of response information. In addition, it is possible to detect a collision and specify a controlled device that caused the detection without causing a collision.

[0019]

Figure 3 DETAILED DESCRIPTION OF THE INVENTION illustrates one embodiment of the invention of claim 1 to claim 3, wherein. In this embodiment, an address number of a control signal is extracted from the conventional device shown in FIG. 10 and a valid signal is output when the address number is assigned to the controlled panel, and an invalid signal is output otherwise for each controlled panel. An address extraction unit 32 for receiving a response signal in response to the valid signal, and outputting a detection signal in response to the invalid signal and a response signal from the controlled panel corresponding to the invalid signal. It is composed.

The address extracting unit 32 includes an extracting unit for extracting an address number from a control signal, and a decoder for decoding the extracted address number and outputting a binary signal until the next control signal arrives. do not do. Decoder 2
For example, the low level of the value signal is the above-mentioned valid signal, and the high level is the above-mentioned invalid signal. The binary signal * DEC1 shown in FIG. 4 is on the controlled board 102-1, the binary signal * DEC2 shown in FIG. 4 is on the controlled board 102-2, and the binary signal * DEC3 shown in FIG. 4, the binary signal * DEC4 shown in FIG. 4 corresponds to the controlled board 102-4.

FIG. 4 shows a detailed configuration of the gate section 34. 4, an AND circuit 40, an inverter circuit 42, a NAND circuit 44, and a latch circuit 46 are provided for each controlled panel. However, those reference numbers are -1,-.
2, -3 and -4 are added to the controlled boards 102-1, 102
-2, 102-3, and 102-4.

AND circuit 4 corresponding to any controlled panel
Data from the controlled panel and binary signals from the decoders passed through the inverter circuits 42-1 to 42-4 are also input to the 0-1 to 40-4, and the output signals are output to the OR unit 106.
Supplied to Similarly, NAND circuits 44-1 to 44-
Reference numeral 4 denotes a response signal from the corresponding control panel and the binary signal.
6-4.

3 and 4, the address extraction unit 32 of FIG. 3 corresponds to the signal output device 6 of FIG. 1 and the signal output device 12 of FIG. 2, and the data branching unit 104 corresponds to FIG. It corresponds to the branching device 2. Controlled panels 102-1 to 1
02-4 are the controlled devices 4-1 to 4-1 of FIGS.
N, and the AND circuits 40-1 to 40-4, the inverters 42-1 to 42-4, and the OR unit 106 correspond to the receiving device 8 in FIGS. The NAND circuits 44-1 to 44-4 and the latch circuits 46-1 to 46-4 are shown in FIG.
And the detection device 10 of FIG.

[0024] The operation of the embodiment of the invention the above constructed claims 1 to 3 wherein is described below. In the same manner as in the related art, the control panel 100 controls the controlled panel 102-1,
It is assumed that a control signal (see FIG. 11 for the signal format) is transmitted to 102-2, 102-3, and 102-4.

At the time of transmission, the address number of the control signal is extracted and determined by the address extracting unit 32, and a low-level binary signal (valid signal) is output to the output terminal of the decoder corresponding to the address number. The signal is output until a signal is generated, and a high-level binary signal (invalid signal) is output to the output terminal of the decoder that does not correspond to the address number until the next control signal is generated.

Therefore, the control signal is copied and branched by the data branching unit 104 in the same manner as in the prior art, and
1, 102-2, 102-3, and 102-4, when a response signal is returned only from the controlled panel corresponding to the address number, the returned response signal is: The signal can be normally received via the AND circuit and the OR section 106 corresponding to the low-level binary signal.

On the other hand, the controlled board to which the address number of the control signal is assigned returns a correct response signal, whereas the controlled board to which the address number of the control signal is assigned is returned. Even if a controlled panel other than the control panel returns an erroneous response signal, the binary signal of the decoder corresponding to the controlled panel that has returned the response signal erroneously is a high-level binary signal (invalid signal). ), And the AND circuit corresponding to the high-level binary signal is placed in a state where it is not gated by the inverter circuit. Therefore, the AND circuit other than the controlled board to which the address number of the control signal is allocated is assigned. The response signal returned from the control panel will not be erroneously received via the corresponding AND circuit or OR section 106.

FIGS. 5 to 9 show this concretely.
It is. FIG. 5 shows a case where an expected correct response signal from the controlled board and an erroneous response signal from the wrong controlled board are simultaneously received. For example, a control signal is transmitted to the controlled panel 102-1 and the controlled panel 102-1 is controlled.
At the same time as the response signal is returned to the control panel 100, the response signal is also erroneously transmitted from the controlled panel 102-4.
Suppose they were sent back to Then, * DEC1 becomes a low-level binary signal, while * DEC4 becomes a high-level binary signal. Therefore, the response signal from the controlled board 102-1 passes through the AND circuit 40-1 and the OR unit 106. Although transferred to the control panel 100, the response signal from the controlled panel 102-4 is not transferred to the control panel 100 via the AND circuit 40-4 and the OR section 106. Therefore, it is possible to avoid collision of response signals taken into the control panel 100. or,
The NAND circuit 44-4 supplies a signal to the latch circuit 46-4, sets the signal in the latch circuit 46-4, and generates an alarm signal.
-4, the latch circuit 46- is not set, and no alarm signal is generated from the latch circuit 46-1. Controlled panel 102 that is returning a response signal by mistake
-4, that is, the cause of the collision can be detected without causing the collision.

Also, as shown in FIG. 6, when an incorrect response signal is returned within the expected period of a correct response signal from the controlled board and later than the correct response signal, As in the case where the correct response signal from the controlled panel and the wrong response signal from the controlled panel that responded incorrectly are returned at the same time, the collision avoidance of the response signal and the detection of the cause of the collision are detected. It can be carried out.

Also, as shown in FIG. 7, when an erroneous response signal is returned within the expected period of a correct response signal from the controlled board and earlier than the correct response signal,
As in the case where the correct response signal from the controlled panel and the erroneous response signal from the controlled panel that responded incorrectly are returned simultaneously, the collision avoidance of the response signal and the detection of the cause of the collision are detected. It can be performed.

Also, as shown in FIG. 8, when an erroneous response signal is returned after the expected period of the correct response signal from the controlled board has elapsed and later than the correct response signal. As in the case where the correct response signal from the controlled panel and the erroneous response signal from the controlled panel that responded incorrectly are returned simultaneously, the collision avoidance of the response signal and the cause of the collision Detection can be performed, and erroneous reception of a response signal can be avoided.

As shown in FIG. 9, when an erroneous response signal is returned before the expected period of the correct response signal from the controlled board and earlier than the correct response signal,
As in the case where the correct response signal from the controlled panel and the erroneous response signal from the controlled panel that responded incorrectly are returned simultaneously, the collision avoidance of the response signal and the detection of the cause of the collision are detected. , And erroneous reception of a response signal can be avoided.

The control signal and the response signal may be bit-parallel.

[0034]

As described above, according to the present invention, control information is copied and branched from a control device and transmitted to a plurality of controlled devices, whereby identification of the plurality of controlled devices in the control information is performed. Since the response information from the controlled device corresponding to the information is taken in using the identification information, it is possible to eliminate the collision with the response information from the controlled device that has erroneously responded to the control information and the erroneous reception thereof. . It is possible to specify a controlled device that has responded incorrectly.

[Brief description of the drawings]

FIG. 1 is a principle block diagram of the invention according to claim 1 ;

FIG. 2 is a block diagram showing the principle of the invention according to claims 2 and 3 ;

FIG. 3 is a diagram showing an embodiment of the invention described in claims 1 to 3 ;

FIG. 4 is a diagram showing a specific example of a gate unit used in the embodiment of FIG.

FIG. 5 is a diagram showing a first operation example of the embodiment shown in FIG. 3;

FIG. 6 is a diagram showing a second example of the operation of the embodiment shown in FIG. 3;

FIG. 7 is a diagram showing a third example of the operation of the embodiment shown in FIG. 3;

FIG. 8 is a diagram showing a fourth example of the operation of the embodiment shown in FIG. 3;

FIG. 9 is a diagram showing a fifth example of operation explanation of the embodiment shown in FIG. 3;

FIG. 10 is a diagram illustrating a configuration example of a conventional information transmitting / receiving device.

FIG. 11 is a diagram showing signal formats of a control signal and a response signal.

[Explanation of symbols]

 2 branching device 4-1 controlled device 4-N controlled device 6 signal output device 8 receiving device 10 detecting device 32 address extracting unit 34 gate unit 40-1 AND circuit 40-4 AND circuit 42-1 inverter circuit 42-4 Inverter circuit 44-1 NAND circuit 44-4 NAND circuit 46-1 Latch circuit 46-4 Latch circuit 102-1 Controlled board 102-4 Controlled board 104 Data branching section 106 OR section

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04L 5/22 H04L 12/40 H04L 29/14

Claims (3)

(57) [Claims] A transmitting device including identification information unique to a controlled device.
The transmission information obtained by copying and branching the transmission information from the device by the number of controlled devices by the branching device is transmitted to a plurality of controlled devices, and response information is transmitted from the controlled device that has recognized the identification information to the transmitting device. A monitoring device for returning the plurality of controlled devices from identification information included in the transmission information.
A signal output device for output the invalid signal for the response information from the controlled device that does not correspond to the identification information of the apparatus, in response to the response information from the controlled device of the invalid signals corresponding
And characterized in that a detection device that outputs a detection signal Te
Monitoring device . 2. The transmission information obtained by copying and branching transmission information including identification information unique to a controlled device by the number of controlled devices by a branching device of the transmission device, transmitting the transmission information to a plurality of controlled devices, in the information receiving apparatus to return the response information to the transmitting apparatus from the controlled apparatus recognizes the information, and the effective signal to the response information from the controlled device extracts the identification information of the identification information corresponding the transmission information, the a signal output device for outputting the disable signal for the response information from the controlled device that does not correspond to the identification information until next transmission information, respectively, are generated, from the controlled device of the active signal corresponding in response to said enable signal And a detecting device that outputs a detection signal in response to the invalid signal and response information from the controlled device corresponding to the invalid signal. An information transmitting and receiving apparatus characterized by comprising: 3. The information transmitting / receiving device according to claim 2, wherein the valid signal is a low level or a high level of a binary signal, and the invalid signal is a high level or a low level of the binary signal. The apparatus has a receiving circuit for each of the controlled devices, and each of the receiving circuits responds to the valid signal of the binary signal and captures response information from the controlled device corresponding to the valid signal, The detection device has a detection circuit for each of the controlled devices, and each of the detection circuits responds to the invalid signal of the binary signal and response information from the controlled device corresponding to the invalid signal. An information transmitting / receiving device for outputting a detection signal.