KR100643865B1 - A path expansion apparatus for MOST having error sensing function - Google Patents

Abstract

The present invention relates to a last path expansion device having an abnormal diagnosis function, and more particularly, to input a ring diagnostic signal (AlBD, RBD: Ring Break Diagnosis) to check the state of a transmission line. The present invention relates to a last path expansion device having an abnormal diagnosis function for checking a state. The present invention adds an ALDI (ring abnormality diagnosis check) signal input function to an existing most recent path expansion device without performing such a separate configuration and operation of cable transmission. As a result, it is possible to realize the steady state and abnormal occurrence state in the most by the AV signal input, and to make it possible to test the convenience of use.

Most Path Expander, Ring Break Diagnosis (RBD)

Description

A path expansion apparatus for MOST having error sensing function}

1 is an embodiment showing a most path expansion device according to the prior art.

2 is an operation state diagram of a conventional most path expansion device.

Figure 3 is an embodiment showing an operating state for detecting the state of the most apparatus according to the present invention.

           Explanation of symbols on the main parts of the drawings

50: most automatic path switching device 100: the second most device

110: firstmost device 120: most network (most string)

port1 ~ port4: Expansion port

The present invention relates to a most path expansion device, and more particularly to a most path expansion device having a fault diagnosis function for checking for ring failure.

Hereinafter, the most recent path extension device and operation control according to the prior art will be described.

1 is an embodiment showing a most recent path expansion device according to the prior art.

The most path expansion device is characterized in that it has a switching path. That is, the most automatic path switching device 500 shown in the figure is provided with four expansion ports port1, port2, port3, and port4. However, it is possible for the expansion port to have a larger number depending on the embodiment.

The transmitting terminal Tx2 and the receiving terminal Rx2 of the second expansion port port2 are connected to a most network 120 (hereinafter referred to as a 'most ring') 120. Therefore, the transmission terminal Tx2 transmits the signal input to the automatic path switching device 500 to the most ring 120 side. The receiving terminal Rx2 receives a signal provided from the most ring 120. Meanwhile, the transmission terminal Tx2 of the second expansion port port2 is connected to the transmission terminal Tx3 of the third expansion port port3. In addition, the receiving terminal Rx2 of the second expansion port port2 is connected to the transmitting terminal Tx3 of the third expansion port port3. That is, the second expansion port port2 serves to provide a signal provided from the first expansion port port1 to the third expansion port port3.

In the transmission terminal Tx3 of the third expansion port port3, the reception terminal Rx of the firstmost device 110, the transmission and reception terminals Tx2 and Rx2 of the second expansion port port2, and the fourth expansion The transmit terminal Tx4 of the port is connected. The transmitting terminal Tx of the first most recent device 110 and the transmitting terminal Tx4 of the fourth expansion port port4 are connected to the receiving terminal Rx3 of the third expansion port port3. That is, the third expansion port port3 receives a signal from the first most recent device 110 to provide a second expansion port port2, a fourth expansion port port4, and a first expansion port port1. Through the most ring 120 to provide the transmission signal. The third expansion port port3 receives the reception signal from the second expansion port port2 and provides the reception signal to the first most recent device 110 or the fourth expansion port port4.

The transmission and reception terminals Rx3 and Tx3 of the third expansion port port3 are connected to the transmission terminal Tx4 of the fourth expansion port port4. In addition, the transmission terminal Tx4 of the fourth expansion port port4 is connected to the reception terminal Rx of the second most recent device 100 and the transmission terminal Tx1 of the first expansion port port1. The reception terminal Rx4 of the fourth expansion port port4 is connected to the transmission terminal Tx1 of the first expansion port port1 and the transmission terminal Tx of the second most recent device 100.

The optical signal output from the transmitting terminal Tx of the network ring is transmitted to the receiving terminal Rx2 of the second expansion port port2 and converted into an electrical signal. The electrical signal is transmitted to the transmission terminal Tx3 of the third expansion port port3 through the 2A path.

The signal transmitted to the transmitting terminal Tx3 of the third expansion port port3 is converted into an optical signal while being transmitted to the receiving terminal Rx of the first most recent device 110. In addition, an optical signal is transmitted from the transmitting terminal Tx of the firstmost device 110 to the receiving terminal Rx3 of the third expansion port 3 and transmitted to the receiving terminal Rx3 of the third expansion port 3. The converted signal is converted into an electrical signal to the transmission terminal Tx4 of the fourth port port4 and transferred to the 3A path.

The signal transmitted to the transmission terminal Tx4 of the fourth expansion port port4 is converted into an optical signal and transmitted to the reception terminal Rx of the second most recent device 100, and transmitted by the second most recent device 100. It is output again from the terminal Tx to the receiving terminal Rx4. The signal transmitted to the receiving terminal Rx4 of the fourth expansion port port4 is converted into an electrical signal, and the electrical signal is transmitted to the transmitting terminal Tx1 of the first expansion port port1 in the 4A path.

However, since the most recent device is not connected to the first expansion port port1, the optical signal is not received at the receiving terminal Rx of the first expansion port port1. Accordingly, the signal is output by switching to the 1B path at the receiving terminal Rx1 of the first expansion port port1. The output electrical signal is transmitted to the transmission terminal Tx2 of the second expansion port port2 through the path 1B. The signal transmitted to the transmission terminal Tx2 of the second expansion port port2 is converted into an optical signal and transmitted to the reception terminal Rx of the first most ring. As described above, the present invention maintains the structure of the most ring so that data transmission is not interrupted even if the data input ports are not distinguished.

Various types of most recent devices may be connected to the third and fourth expansion ports port3 and port4. As shown in the drawing, the two most device devices are connected to each other, and the first device device 110 is described as a device device having a function of a hands-free device. 100) will be described as a most recent device having a function of an audio input / output device.

Next, the operation process of the most recent path expansion device according to the prior art having the above configuration will be described.

The firstmost device 110 having the function of a hands free device is connected to the third expansion port port3. The second most recent device 100 having a function of an audio input / output device is connected to a fourth expansion port port4. And no first device is connected to the 1st expansion port port1.

In this case, the fourth expansion port port4 selects the 4A path (the path selected when the fourth expansion port has the most device), and the third expansion port 3 selects the 3A path (the most expansion port in the third expansion port). The path selected when the device is present is selected, and the first expansion port port1 selects the path 1B (the path selected when there is no ghost device in the first expansion port).

Therefore, the earphone signal of the mobile phone input from the first most apparatus 110 is output through the second most apparatus 100, and the microphone signal input from the second most apparatus 100 is transmitted to the first most apparatus 110. Path to input is as follows.

The earphone signal of the cellular phone outputted from the transmitting terminal Tx of the firstmost device 110 is provided to the receiving terminal Rx3 of the third expansion port port3 of the most automatic path switching device. In addition, the transmission terminal Tx4 of the fourth expansion port port4 connected to the receiving terminal Rx3 of the third expansion port port3 is transferred to the transmission terminal of the fourth expansion port port4 by the path 3A. It is transmitted to the receiving terminal (Rx) of the second most recent device 100 is connected to (Tx4).

On the contrary, the microphone signal of the audio input / output device output from the transmission terminal Tx of the second most recent device 100 is converted into an optical signal to the receiving terminal Rx4 of the fourth expansion port 4 of the most automatic path switching device. Is provided. The microphone signal input to the receiving terminal Rx4 of the fourth expansion port port4 is transmitted to the transmitting terminal Tx1 of the first expansion port port1 through a path of 4A.

Since the first device is not provided with the first expansion port port1, in the present invention, the path is extended to have a switching path. That is, the microphone signal output from the transmission terminal Tx1 of the first expansion port port1 is transmitted to the transmission terminal Tx2 of the second expansion port port2 through the path 1B. The microphone signal transmitted to the second expansion port port2 is transmitted to the receiving end of the most ring. The signal received from the most strings by the receiving terminal Rx of the most automatic path switching device is transmitted to the transmitting terminal Tx3 of the third expansion port port3. The microphone signal transmitted to the transmission terminal Tx3 of the third expansion port port3 is provided to the reception terminal Rx of the first most recent device 110, thereby being transmitted to the other party's mobile phone.

That is, the conventional most automatic path switching device extends the path of the expansion port so that the path is always connected regardless of whether the expansion port and the most device are connected so that the most ring is always in the connected state.

On the other hand, the operation state when the release of the most path expansion device or a problem in the connector is as follows.

In the process of transmitting the electrical signal transmitted from the most ring to the transmitting terminal Tx3 of the third expansion port port3 to the receiving terminal Rx of the first mortise apparatus 110, as shown in the drawing, the third expansion. If a problem occurs in the optical cable for transmitting the optical signal between the port por3 and the receiving terminal Rx of the firstmost device 110 or disappears from the network, the operation proceeds as follows.

Since the optical signal cannot be transmitted between the third expansion port por3 and the firstmost device 110, the receiving terminal Rx3 of the third expansion port por3 is transmitted from the transmission terminal Tx of the first most recent device 110. Also, optical signal transmission to) is not possible at the source.

Therefore, in the present invention, the optical signal transmitted from the second expansion port (port2) is transmitted to the transmission terminal (Tx) of the third expansion port (port3), the third expansion port (3) is the path of the electrical signal in the path 3A Control to switch to 3B path.

Therefore, the electrical signal transmitted from the third expansion port por3 to the path 3B is transmitted to the transmission terminal Tx4 of the fourth expansion port por4. The signal output from the transmitting terminal Tx4 of the fourth expansion port por4 is transmitted as an optical signal to the receiving terminal Rx of the second most recent device 100. The optical signal output from the transmitting terminal Tx of the second most recent device 100 is transmitted to the receiving terminal Rx4 of the fourth expansion port port4. The signal output from the receiving terminal Rx4 of the fourth expansion port port4 is transmitted as an electric signal to the transmitting terminal Tx1 of the first expansion port port1. The signal transmitted to the transmission terminal Tx1 of the first expansion port port1 is switched from 1A to 1B so that the ring structure is not broken because the most apparatus is not connected. Accordingly, the signal output from the transmission terminal Tx1 of the first expansion port port1 is transmitted to the second expansion port port2 through the path 1B. The signal transmitted to the second expansion port port2 is transmitted to the most ring.

As such, in the related art, the path of the expansion port in which the most apparatus is not provided may be extended, and thus the ring structure may be prevented from being disconnected because the most apparatus is not connected. In addition, in the related art, when the most serious device operates abnormally or a problem occurs in an optical cable transmitting an optical signal between the expansion port and the most device, the signal is not disconnected so that the signal is connected to the ring structure without being disconnected.

2 is an operation state diagram of a conventional most path expansion device.

As shown in the figure, the receiving terminal (nRx) of the n expansion port and the transmitting terminal (nTx) of the n expansion port are the transmission terminals ((n + 1) Tx of the n + 1 expansion port through a switch on-off operation. ) Is connected. At this time, the operation control of the switch is determined according to the state of the receiving terminal nRx of the n expansion port.

Through this configuration, when there is no signal at the receiving terminal (nRx) of the n expansion port (when the most device is not connected to the n expansion port, or the ring is broken), the transmission terminal (nTx) ) Switch is on. Then, the signal of the transmission terminal (nTx) of the n expansion port is transmitted to the transmission terminal ((n + 1) Tx) of the n + 1 expansion port.

On the contrary, when there is a signal at the receiving terminal (nRx) of the n expansion port, the switch of the receiving terminal (nRx) is turned on in the state that the most device is connected to the n expansion port (the ring is not broken). Then, the signal of the receiving terminal (nRx) of the n expansion port is transmitted to the transmitting terminal ((n + 1) Tx) of the n + 1 expansion port.

The signal output to the receiving terminal ((n + 1) Rx) of the n + 1 expansion port has a transfer process as follows. When there is no signal in the receiving terminal ((n + 1) Rx) of the n + 1 expansion port (when the most device is not connected to the n + 1 port or when the ring is broken) The switch of the terminal ((n + 1) Tx) is turned on. Then, the signal of the transmission terminal ((n + 1) Tx) of the n + 1 port is transmitted to the transmission terminal ((n + 2) Tx) of the n + 2 port.

On the contrary, when there is a signal at the receiving terminal ((n + 1) Rx) of the n + 1 port, the receiving terminal ((n + 1) The switch of Rx) is turned on. Then, the signal of the receiving terminal ((n + 1) Rx) of the n + 1 port is transmitted to the transmitting terminal ((n + 2) Tx) of the n + 2 port.

At this time, as shown in the embodiment shown in Figure 1 1A is the switch path is selected when the first device is in the first expansion port (port1), 2A is the switch path is selected when there is the most device in the second expansion port (port2) 3A is a switch path selected when there is a most recent device in the third expansion port 3, and 4A is a path selected when there is a most recent device in the fourth expansion port 4. On the contrary, 1B is a switch path selected when there is no ghost device in the first expansion port (port1), 2B is a switch path selected when there is no ghost device in the second expansion port (port2), and 3B is a third expansion port ( The switch path is selected when there is no ghost device in port3), and 4B is the switch path selected when there is no ghost device in the fourth expansion port port4.

The receiving terminal Rx2 of the second expansion port por2 is an optical receiving element that informs the second expansion port port2 of whether or not the most recent device is connected, and the receiving terminal Rx3 of the third expansion port port3. ) Is an optical receiving element that informs the third expansion port port3 of whether or not the most recent device is connected, and the receiving terminal Rx4 of the fourth expansion port port4 is connected to the fourth expansion port port4. It is a device for receiving light that indicates whether or not the connection.

However, the conventional most recent apparatus described above has the following problems.

In the conventional most recent device, each port is automatically switched according to the presence or absence of an external device or an abnormal occurrence of an external line, thereby complementing the ring structure, which is a problem of the most system. As a result, each external device can maintain stability regardless of whether RBD (Ring Break Diagnosis) function is basically adopted in most. However, conventionally, in order to confirm the RBD function, a separate network device was needed to disconnect the transmission path or disconnect the connector. Therefore, there was a need to provide separate network equipment for a separate RBD (ring fault diagnosis check).

Accordingly, an object of the present invention is to provide a last path expansion device having a fault diagnosis function for detecting an abnormal state of the last path extension device.

Most path expansion device having a fault diagnosis function according to the present invention for achieving the above objects, three or more N expansion ports having an output of a three-phase state in order to connect two or more Most devices; 2N electrical switches for connecting the expansion ports; N light receiving elements and N light output elements provided in the expansion port; N inverters for selectively controlling the 2N electrical switches; A blocking circuit for inputting a ring abnormality diagnosis signal to the expansion port; When the ring abnormality diagnosis signal (RB _n = 1) is input to the expansion port through the blocking circuit, the transmission path is blocked.

In the present invention, the electrical switch, characterized in that serves as a switch of the three-phase inverter or three-phase buffer.

Hereinafter, an operation for detecting an abnormal state of the most apparatus according to the present invention will be described.

Figure 3 is an embodiment showing an operating state for detecting the state of the most apparatus according to the present invention. In order to check the fault diagnosis function of the most path in the present invention, a description will be given with reference to the most path extension device shown in FIG.

As shown in FIG. 1, an electrical signal transmitted from the most ring 120 to the transmitting terminal Tx3 of the third expansion port port3 is transmitted to the receiving terminal Rx of the firstmost device 110. In order to check whether the path of the most abnormal, has the following operation state diagram.

The operation process of the most path extension device is performed as described above with reference to FIG. 1. As described above, the present invention has an operational state diagram as shown in FIG. 3 in order to confirm whether or not there is an abnormality of the most path while data is transmitted and received through the most path extension device.

As shown in the figure, the receiving terminal (nRx) of the n expansion port and the transmitting terminal (nTx) of the n expansion port are the transmission terminals ((n + 1) Tx of the n + 1 expansion port through a switch on-off operation. ) Is connected. At this time, the operation control of the switch is determined according to the state of the receiving terminal nRx of the n expansion port.

Through this configuration, when there is no signal at the receiving terminal (nRx) of the n expansion port (when the most device is not connected to the n expansion port, or the ring is broken), the transmission terminal (nTx) ) Switch is on. Then, the signal of the transmission terminal nTx of the n expansion port is transmitted to the transmission terminal ((n + 1) Tx) of the n + 1 expansion port.

On the contrary, when there is a signal at the receiving terminal (nRx) of the n expansion port, the switch of the receiving terminal (nRx) is turned on in the state that the most device is connected to the n expansion port (the ring is not broken). Then, the signal of the receiving terminal (nRx) of the n expansion port is transmitted to the transmitting terminal ((n + 1) Tx) of the n + 1 expansion port.

The signal output to the receiving terminal ((n + 1) Rx) of the n + 1 expansion port has a transfer process as follows. When there is no signal in the receiving terminal ((n + 1) Rx) of the n + 1 expansion port (when the most device is not connected to the n + 1 port or when the ring is broken) The switch of the terminal ((n + 1) Tx) is turned on. Then, the signal of the transmission terminal ((n + 1) Tx) of the n + 1 port is transmitted to the transmission terminal ((n + 2) Tx) of the n + 2 port.

On the contrary, when there is a signal at the receiving terminal ((n + 1) Rx) of the n + 1 port, the receiving terminal ((n + 1) The switch of Rx) is turned on. Then, the signal of the receiving terminal ((n + 1) Rx) of the n + 1 port is transmitted to the transmitting terminal ((n + 2) Tx) of the n + 2 port.

At this time, as shown in the embodiment shown in Figure 1 1A is the switch path is selected when the first device is in the first expansion port (port1), 2A is the switch path is selected when there is the most device in the second expansion port (port2) 3A is a switch path selected when there is a most recent device in the third expansion port 3, and 4A is a path selected when there is a most recent device in the fourth expansion port 4. On the contrary, 1B is a switch path selected when there is no ghost device in the first expansion port (port1), 2B is a switch path selected when there is no ghost device in the second expansion port (port2), and 3B is a third expansion port. The switch path is selected when there is no ghost device at port3, and 4B is the switch path selected when there is no ghost device at the fourth expansion port 4.

The receiving terminal Rx2 of the second expansion port por2 is an optical receiving element that informs the second expansion port port2 of whether or not the most recent device is connected, and the receiving terminal Rx3 of the third expansion port port3. ) Is an optical receiving element that informs the third expansion port port3 of whether or not the most recent device is connected, and the receiving terminal Rx4 of the fourth expansion port port4 is connected to the fourth expansion port port4. It is a device for receiving light that indicates whether or not the connection.

The present invention arbitrarily cuts off a transmission line in order to check whether an abnormal state of the most path exists. For example, when nRB is 0, the (n + 1) Tx output to the next port will follow the input of nRx or the input value of nTx, just like the existing most path extension. That is, the receiving terminal nRx of the n expansion port and the transmitting terminal nTx of the n expansion port are connected to the transmission terminal ((n + 1) Tx) of the n + 1 expansion port through a switch on-off operation. . At this time, the operation control of the switch is determined according to the state of the receiving terminal nRx of the n expansion port.

Through this configuration, when there is no signal at the receiving terminal (nRx) of the n expansion port (when the most device is not connected to the n expansion port, or the ring is broken), the transmission terminal (nTx) ) Switch is on. Then, the signal of the transmission terminal nTx of the n expansion port is transmitted to the transmission terminal nTx of the n + 1 expansion port.

On the contrary, when there is a signal at the receiving terminal (nRx) of the n expansion port, the switch of the receiving terminal (nRx) is turned on in the state that the most extended device is connected to the n expansion port (the ring is not broken). . Then, the signal of the receiving terminal (nRx) of the n expansion port is transmitted to the transmitting terminal ((n + 1) Tx) of the n + 1 expansion port.

However, when nRB becomes 1, the output value of (n + 1) Tx becomes open and it cannot send a signal of this front end. That is, it becomes 0 to the output terminal of (n + 1) Tx, so that a so-called ring break state can be made. As a result, it can be confirmed that the current path is in a normal state.

On the other hand, when (n + 1) RB is 0, the (n + 2) Tx outputted to the next port is the same as the existing most recent path extender.The input value of (n + 1) Rx or (n + 1) Tx Will follow. That is, the signal output to the receiving terminal ((n + 1) Rx) of the n + 1 expansion port has the following transfer process.

When there is no signal in the receiving terminal ((n + 1) Rx) of the n + 1 expansion port (when the most device is not connected to the n + 1 port or when the ring is broken) The switch of the terminal ((n + 1) Tx) is turned on. Then, the signal of the transmission terminal ((n + 1) Tx) of the n + 1 port is transmitted to the transmission terminal ((n + 2) Tx) of the n + 2 port.

On the contrary, when there is a signal at the receiving terminal ((n + 1) Rx) of the n + 1 port, the receiving terminal ((n + 1) The switch of Rx) is turned on. Then, the signal of the receiving terminal ((n + 1) Rx) of the n + 1 port is transmitted to the transmitting terminal ((n + 2) Tx) of the n + 2 port.

However, when (n + 1) RB becomes 1, the output value of (n + 2) Tx becomes open and does not send a signal of this front end. That is, 0 is output from the output terminal of (n + 2) Tx, so that a so-called ring break can be made. As a result, it can be confirmed that the current path is in a normal state.

As described above, in the present invention, it is a basic technical idea to check a state of a transmission path by arbitrarily inputting a transmission path blocking signal in order to check whether there is an abnormality in the transmission path of the most path expansion device.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

The following effects can be expected due to the most path expansion device having a fault diagnosis function according to the present invention.

Conventionally, in order to check the operation of the RBD (Ring Break Diagnosis) function of the device that checks or adds the failure of the port expansion device in the use environment, the RBD function network must be separately configured. I had to experiment. And in order to make ALDB (ring fault diagnosis check) status in separate network, it is necessary to cut off ring cable (transmission path) or connect / disconnect using connector. However, the present invention adds an ALDI (ring fault diagnosis check) signal input function to the existing most path expansion device without performing such a separate configuration and operation of cable transmission. As a result, by using the AV signal input, the internal steady state and abnormal occurrence state can be realized, and testability can be improved.

Claims (2)

Three or more N expansion ports having an output in a three-phase state, for connecting two or more Most devices; 2N electrical switches for connecting the expansion ports; N light receiving elements and N light output elements provided in the expansion port; N inverters for selectively controlling the 2N electrical switches; A blocking circuit for inputting a ring abnormality diagnosis signal to the expansion port; And a ring path diagnosis signal (RB _n = 1) is inputted to the expansion port through the blocking circuit to block the transmission path. The method of claim 1; The electrical switch, the last path expansion device, characterized in that serves as a switch of the three-phase inverter or three-phase buffer.

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