KR20040016207A - Method and system for system-apu's interactive communication - Google Patents

Abstract

PURPOSE: An interactive communication method and system between a system and an APU(Alarm Panel Unit) is provided to enable a system to catch the normal operation state of an APU, having a function to receive and display the state information of the system, in real time by making the APU retransmit the data containing the state information of the APU to the system. CONSTITUTION: As the state information of an APU(20) is transmitted to a system(10), the system(10) can grasp whether the APU(20) works normally. In case that a plurality of APUs are connected and installed, one master-APU is directly connected with the system(10). The other slave-APUs is connected to the master-APU. The first slave-APU among the slave-APUs communicates with the master-APU and the second-APU. The second APU communicates with the first slave-APU and the third slave-APU. Accordingly, the state information of the first slave-APU through the Nth slave-APU is sequentially transmitted to the master-APU. The master-APU collectively transmits the transmitted state information to the system(10).

Description

Bidirectional communication method and system between system and API {{METHOD AND SYSTEM FOR SYSTEM-APU'S INTERACTIVE COMMUNICATION}

The present invention relates to a communication method between a system and an alarm panel unit (APU), and to a bidirectional communication method and system between an APU and a system having a function of receiving and displaying status information of a system.

The APU is a device that receives the system state information from a predetermined system and informs the operator visually and audibly when a failure occurs in the system, that is, when a failure code is received. In this case, the APU in the present invention is not a term referring to a specific device, but is a conceptual term that includes all devices that receive status information about a predetermined system and visually or auditively indicate a degree of danger of the system.

For example, when the system has a fault condition such as emergency, critical, major, or minor, the APU receiving the fault code turns on the alarm lamp set according to the above conditions, or a predetermined warning sound through the speaker. The output allows the system operator to quickly determine the state of the system.

In addition, the APU is installed not only in the place where the system is installed, but also in a sleeping room and toilet, and serves to quickly notify the system operator of the failure of the system even at a distance from the system. Therefore, in order to ensure the reliability of information, the information according to the fault level should always be consistent between the system and the APU, and in case of a failure, the operator should be informed quickly.

However, as shown in FIG. 1, the communication between the conventional system 10 and the APU 20 was a unidirectional communication in which data is transmitted only from the system 10 to the APU 20. Therefore, it is not known whether the APU 20 is normally processed because the communication is not made from the APU 20 to the system 10, and also when the communication between the system 10 and the APU 20 is lost. There was no way to do it. That is, since no information is transmitted from the APU 20 to the system 10, it is not confirmed whether the state information of the system 10 is normally transmitted to the APU 20, and even if it is normally transmitted, the APU ( There is a problem that the state of the system 10 is not correctly displayed due to the failure of 20).

Accordingly, it is an object of the present invention to retransmit data including the state information of the APU to the system in an APU having a function of receiving and displaying state information of the system, thereby realizing the normal operating state of the APU in real time in the system. The present invention provides a method and system for bidirectional communication between a system and an APU.

The present invention for achieving the above object, the process of transmitting the data including the state information of the system to the APU, and in accordance with the system state information included in the received data to display the state information of the system in the APU Bidirectional communication between the system and the APU, comprising: transmitting the data including the state information of the APU to the system; and displaying the state of the APU identified through the received state information of the APU in the system. Implement the method.

The APU is composed of one Master-APU and one or more Slave-APUs, and the Master-APU collects state information of a plurality of Slave-APUs and transmits them to the system.

In addition, the plurality of slave-APUs are connected in a cascaded or parallel manner so that their status information is transmitted to the Master-APU.

The APU state information transmitted from the APU to the system is transmitted at predetermined time intervals, and when data is not transmitted for a predetermined number of times and / or for a predetermined time, the system determines that communication is lost between the APUs and indicates a communication failure. Process.

After the communication failure is determined between the system and the APU, if communication is resumed, the process includes releasing the indication of the communication failure and reflecting the state of the current system to the APU.

The APU status information data transmitted from the APU to the system is transmitted in the form of 1 byte communication protocol data (0x0F).

The APU state information transmitted from the APU to the system may be any one or more selected from identification information (ID) information, visible / audible information, read / write information, failure level information, and communication disconnection state information of the APU.

In addition, the present invention for achieving the above object, an APU (Alarm Panel Unit) device for receiving and displaying system status information transmitted from a predetermined system, and transmits its own status information to an external system, and the transmission from the APU A system for analyzing a received APU state information and organizing a program indicating a communication state between the system and the APU to perform a predetermined operation, and transmitting / receiving state information data defined by a predetermined protocol between the APU and the system. Implement a bidirectional communication system between an APU and a system having a transmission device that enables reception.

The APU is composed of one Master-APU and one or more Slave-APUs, and the Master-APU collects state information of a plurality of Slave-APUs and transmits them to the system.

In addition, the plurality of slave-APUs are connected in a cascaded manner so that their status information is sequentially transmitted to the Master-APU.

The transmission device for transmitting data from the APU to the system is characterized by reusing the same line as the transmission line used when transmitting data from the system to the APU.

The transmission line is characterized in that the communication between the system and the APU via any one device selected from RS-232C and RS485.

1 is a view schematically showing a one-way communication between a system and an alarm panel unit (APU) according to the prior art.

2 is a schematic representation of bidirectional communication between a system and an APU in accordance with the present invention;

3 is a diagram illustrating a cascade connection relationship between a Master-APU and a Slave-APU according to an embodiment of the present invention.

4 is a diagram illustrating a parallel connection relationship between a master-apu and a slave-apu according to an embodiment of the present invention;

5 is a view showing the structure of an APU according to an embodiment of the present invention.

6 is a diagram illustrating a parallel connection relationship between a master-APU and a slave-APU by an interface according to an exemplary embodiment of the present invention.

7 is a flowchart illustrating an internal data processing procedure of an APU according to an embodiment of the present invention.

8 is a block diagram illustrating a protocol between a system and an APU according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

First, referring to FIG. 2, bidirectional communication between the system and the APU according to the present invention will be described. In the related art, data is unidirectionally transmitted from the system 10 to an APU (Alarm Panel Unit) 20, but is illustrated in FIG. 2. As described above, in the present invention, since the state information of the APU 20 is transmitted from the APU 20 to the system 10, whether the APU 20 is normally operated may be determined by the system 10.

3 and 4, when a plurality of APUs 20 are connected and installed at a predetermined position, one APU is set as a master-APU 21 to directly connect with a system, and the remaining plurality of APUs are connected. By setting the slave-APUs 22 to 24 and connecting to the master-APU 21, it is possible to implement a transmission / reception system between the system 10 and the APU 20 more efficiently.

As shown in FIG. 3, the first Slave-APU 22 of the plurality of Slave-APUs 22 to 24 communicates with the Master-APU 21 and the second Slave-APU 23, and the second Slave. The APU 23 may implement a transmit / receive system in a sequential cascade manner in communication with the first Slave-APU 22 and the third Slave-APU. According to the above method, its own state information is sequentially transmitted from the first Slave-APU 22 to the N-th Slave-APU 24 to the Master-APU 21, and the plurality of transmitted slaves- Information of the APUs 22 to 24 is integrated into the Master-APU 21 and collectively transmitted to the system 10.

For example, if the state information corresponding to one APU 20 is implemented in 1 byte, the state information of the Master-APU 21 and the N Slave-APUs 22 to 24 synthesized in the Master-APU 21 may be ( 1 + N) bytes, and the (1 + N) byte information is collectively transmitted to the system 10.

Alternatively, as shown in FIG. 4, a transmission / reception system may be implemented in such a manner that a plurality of slave-APUs 22 to 24 are connected in parallel to one master-APU 21. Each Slave-APU 22 to 24 individually communicates with the Master-APU 21, directly transmits its status information to the Master-APU 21, and collects a plurality of Slave-APUs 22 to 24. ) Status information is collectively transmitted to the system (10).

The parallel connection method as described above has the advantage that direct communication is possible compared to the slave serial method described above with reference to FIG. 3, but the master-slave interconnection terminal must be additionally provided in the master according to the increase of each slave-APU. There are disadvantages.

Meanwhile, when the APU is described in detail with reference to FIG. 5, the Master-APU 21 is connected to the weak station 10, which is an embodiment of the above-described system, and is connected to a plurality of slave-APUs 22 to 24. . The weak station 10 is preferably provided with two identical systems, so that when a problem occurs in the active workstation W / S ACT 11, the weak station 10 can communicate with the standby workstation W / S ST-BY 12. Can be.

The Master-APU 21 includes a visual alarm panel 40 and a speaker 47 including a plurality of light emitting diodes so as to visually or audibly display the state of the system 10. Upon receiving the system state information from the system 10, the diodes 41 to 45 of the visual alarm panel 40 are turned on in accordance with the state information of the system via its CPU 38. In addition, a preset beep is output through the amplifier 46 and the speaker 47 according to each state information for an audible alarm. In addition, power for the operation of the APU is supplied through the power module 30.

The Master-APU 21 is bi-directional communication with a plurality of Slave-APU (22 to 24) and the system 10, preferably the communication interface of RS-232C or RS-485 in consideration of the distance between the system and the APU Use RJ-45 connector. The plurality of Slave-APUs 22 to 24 and the system 10 and the data transmitted / received are switched through a multiplexer (MUX) 37.

Further, according to the present invention, the state information collected from the plurality of Slave-APUs 22 to 24 is temporarily stored in the memory 39 through the CPU 38, and the state information of all the Slave-APUs 22 to 24 is stored. Once stored, the stored information is transferred to the system 10 in a batch.

Referring to FIG. 6, the connection by the cascading serial method between the APUs 20 described above with reference to FIG. 3 will be described. The Master-APU 21 may include two workstations 11 and 12 and an RS-232 ( It is possible to connect via 11a, 12a, 21c and 21e) or RS-485 (11b, 12b, 21d and 21f) communication interface, and it is common for each APU 21 to 24 to have a significant mutual separation distance. In view, it is preferred to be connected via an RS-485 (21b, 22b, 22b, 23a, 23b and 24a) communication interface. In addition, each APU 21 to 24 can be assigned a unique ID to distinguish a plurality of APUs 21 to 24 in the system 10.

Hereinafter, a bidirectional communication procedure between the system and the APU according to the present invention by the above-described system will be described with reference to FIG. 7.

First, when receiving the state information from the predetermined system 10 (S100), the state information of the system 10 is transmitted to the master-APU and a plurality of slave-APU, each APU according to the state information in accordance with the system ( The state of 10) is visually and audibly displayed.

In addition, according to the present invention, in order to determine whether the transmission / reception state with each APU is normal, the system 10 issues a status read command sequentially (S110 to S170) in order of ID assigned to each slave-APU. Transmission (S120). The Slave-APU receiving the command (S130) transmits its APU state to the Master-APU, and the state information is stored in the memory of the Master-APU together with ID information of each APU (S150).

When the state read command and the state storage operation for all the slave-APUs are completed, the stored ID information and state information are collectively transmitted to the system 10 (S180).

On the other hand, after the status read command of the Master-APU, if the Slave-APU does not transmit normal status information or there is no reaction (S140), it is instructed to retransmit, or determined that there is no Slave-APU device (S160), The information is stored in the memory of the Master-APU.

Although not shown in FIG. 7, preferably, the system and the APU perform bidirectional communication at a predetermined time interval in real time, and when it is determined that the bidirectional communication is interrupted for a predetermined number of times or for a predetermined time, the failure of the APU link is eliminated. Display on the system. In addition, if it is determined that communication is resumed as a result of the subsequent communication attempt, the APU link failure indication is released, and the current state of the APU is reflected in the system.

In addition, since system state information data transmitted from the system to the APU and APU state information data transmitted from the APU to the system are transmitted / received through the same line, data collision may occur. In such a case, it is preferable to implement each data to be retransmitted after a predetermined time interval.

The state information data to be transmitted according to the above procedure should be defined as a protocol for bidirectional communication, preferably 1 byte information, an embodiment by the defined protocol of the data will be described with reference to FIG.

As shown in FIG. 8, 1 bit of information is displayed for each block, and a total of 8 pieces of information may be defined as 1 byte.

For example, the first two bits (50 and 51) represent the ID of the APU, and can distinguish up to four APUs. That is, 00, 01, 10, and 11 can distinguish the Master-APU and the Slave-APU. (In this example, it may consist of one Master-APU and three Slave-APUs.)

The visible / audible bit 52 indicates information on whether the APU's visible or audible function is normally operated. The Rd / Wr bit 53 indicates data transmission / reception between the system and the master-APU or between the master-APU and the slave-APU. Upon reception, the division information for the instructions of the read command and the write command is displayed. In addition, the status information such as Critical (54), Major (55), and Minor (56) is displayed according to the system's risk level, and since it can be duplicated depending on the system's status, each bit is displayed as a separate bit.

Finally, when data communication between the system and the APU or the Master-APU and the Slave-APU is lost, the link status is indicated by the LinkFail bit (57).

The present invention as described above, by implementing the bidirectional communication between the system and the APU, it is possible to grasp the current state of the APU, there is an effect that can inform the operator of the failure when the communication between the system and the APU.

Claims (20)

In the communication method between the system and the alarm panel unit (APU), Transmitting data including state information of the system to the APU; Displaying the state information of the system by the APU according to the system state information included in the received data; Transmitting data including the state information of the APU to the system; And displaying the state of the APU identified through the received state information of the APU in the system. The method of claim 1, The APU consists of one Master-APU and one or more Slave-APUs, The master-APU collects the state information of a plurality of slave-APU, and transmits to the system, characterized in that the bi-directional communication between the system and the APU. The method of claim 2, The plurality of slave-APUs are connected in a cascaded manner so that their status information is sequentially transmitted to the Master-APU. The method of claim 2, The plurality of slave-APUs are connected in a parallel manner (parallel) so that their status information is transmitted to the master-APU, characterized in that the bidirectional communication between the system and the APU. The method of claim 1, The transmission line for transmitting data from the APU to the system reuses the same line as the line used for data transmission from the system to the APU. The method of claim 5, The transmission line is a bidirectional communication method between the system and the APU, characterized in that the communication between the system and the APU via any one of the selected device of RS-232C and RS485. The method of claim 1, The APU state information transmitted from the APU to the system is transmitted at a predetermined time interval, and when the data is not transmitted for a predetermined number of times and / or for a predetermined time, the system determines that communication is lost between the APUs and indicates a communication failure. Bidirectional communication method between the system and the APU. The method of claim 7, wherein And after communication is resumed after determining communication failure between the system and the APU, canceling the communication failure indication and reflecting the state of the current system to the APU. The method of claim 1, The APU status information data transmitted from the APU to the system is transmitted in the form of 1 byte communication protocol data (0x0F). The method of claim 1, The APU state information transmitted from the APU to the system is any one or more selected from identification information (ID) information, visible / audible information, read / write information, failure level information, and communication disconnection status information of the APU. Bidirectional communication method. In the communication system between the system and the APU, An alarm panel unit (APU) device that receives and displays system status information transmitted from a predetermined system and transmits its own status information to an external system; A system which analyzes the APU state information received from the APU, organizes a program indicating a communication state between the system and the APU, and performs a predetermined operation; And a transmission device that enables transmission / reception of status information data defined by the APU and a system-to-system protocol. The method of claim 11, The APU consists of one Master-APU and one or more Slave-APUs, The master-APU collects the state information of the plurality of slave-APU, and transmits to the system, characterized in that the bi-directional communication system between the system and the APU. The method of claim 12, The plurality of slave-APUs are connected in a cascaded manner so that their status information is sequentially transmitted to the Master-APU. The method of claim 12, The plurality of slave-APUs are connected in a parallel manner (parallel) so that their status information is transmitted to the Master-APU system, characterized in that the bi-directional communication system between the APU. The method of claim 11, The transmission device for transmitting data from the APU to the system reuses the same line as the transmission line used for data transmission from the system to the APU. The method of claim 15, The transmission line is a bidirectional communication system between the system and the APU, characterized in that the communication between the system and the APU via any one of the selected device of RS-232C and RS485. The method of claim 11, The APU state information transmitted from the APU to the system is transmitted at a predetermined time interval, and when the data is not transmitted for a predetermined number of times and / or for a predetermined time, the system determines that communication is lost between the APUs and indicates a communication failure. Bidirectional communication system between the system and the APU. The method of claim 17, After determining that the communication failure between the system and the APU, if communication is resumed, the indication of the communication failure is released and reflects the current system state to the APU, characterized in that the bidirectional communication system between the system and the APU. The method of claim 11, The APU status information data transmitted from the APU to the system is transmitted in the form of 1 byte communication protocol data (0x0F). The method of claim 11, The APU state information transmitted from the APU to the system is any one or more selected from identification information (ID) information, visible / audible information, read / write information, failure level information, and communication disconnection status information of the APU. Two-way communication system.