KR101585954B1 - System for network enhanced telemetry and method for controlling the same - Google Patents

Abstract

The present invention relates to a network technology. More particularly, the present invention relates to a system which can continuously transmit measurement data of the total slave nodes according to a command of a master node in a network system for a telemetric apparatus having a ring structure, and change/add only a slave without changing a master device in adding/changing a measurement item since the slave has channel information of a relevant measurement item, and to a method for controlling the same.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network system for a telemetry apparatus,

The present invention relates to a network technology, and more particularly, to a network system for a telemetry apparatus having a ring structure, in which measurement data of all slave nodes are successively transmitted according to a command of a master node, So that only the slave can be added / changed without changing the master device when the measurement item is added / changed, and a control method thereof.

In particular, the present invention relates to a network system for retransmitting only data of slaves having an error in transmission data according to a command of a master node, and a control method thereof.

Using a general network technology, the master node sends a data transfer command to each slave, and after receiving the data, a data transfer command is sent to the next slave.

In the case of a general telemetry device, the master has the transmission channel address of the measurement channel. In this case, when the measurement item is added / changed, it is necessary to modify the slave device as well as the master device.

Therefore, if channel information is included in the slaves, it is possible to make a quick modification to add and / or change only the slave device without modifying the master device upon addition and / or change of measurement items, and an economical method is required.

1. Korean Patent No. 10-0797602 2. Korean Patent No. 10-1096593

1. Lee, Y., et al., "KSR-III flight test telemetry system operation result," Human Body Exposure Analysis of Telecommunication Equipment for the Body of the Combatant, "Journal of the Korean Society for Aeronautical and Space Sciences, Vol.31, No.6 (2003. 8) pp.96-101

The present invention has been proposed in order to solve the need according to the above background art, and it is an object of the present invention to provide a telemetry device capable of adding and / or modifying only a slave device without modifying a master device upon addition and / or change of measurement items when slaves contain channel information The present invention is directed to a network system and method.

The present invention provides a network system for a telemetry device capable of adding and / or changing only a slave device without modifying a master device upon addition and / or change of measurement items when slaves contain channel information .

The network system for the telemetry device comprises:

A master node; And

And a plurality of slave nodes sequentially transmitting measurement data sequentially measured according to the data transfer command of the master node and having channel information of the measurement item for generating the measurement data in advance .

Here, the network system for the telemetry device may be a unidirectional ring network.

Also, only the corresponding slave node having an error in the measurement data to be transmitted among the plurality of slave nodes retransmits the measurement data.

The slave device of the network may further include: a receiving terminal for receiving a data transmission command or reception data from the master node or a plurality of slave nodes adjacent to the slave node; A receiving buffer for buffering received data transfer commands or received data; A measurement data collection unit for collecting measurement data; A measurement data buffer for buffering the collected measurement data; A control unit for confirming the contents of the reception buffer and determining whether to transmit the reception data or the measurement data of the slave node; A transmission MUX for receiving measurement data, reception data, and data transmission commands from the reception buffer and the measurement data buffer under the control of the control unit and outputting the reception data and the data transmission commands; And a transmitter for transmitting any one of the output measurement data, the reception data, and the data transmission command.

In addition, the controller stores the received data received in the receiving terminal in the LSB (Least Significant Bit) of the receiving buffer, shifts the received data by 1 bit according to the input of the receiving terminal, and transmits the MSB (Most Significant Bit) And the like.

The control unit controls the transmitting MUX so that the receiving data inputted to the receiving end is transmitted to the transmitting end until the end input while confirming the receiving buffer. When all the receiving data except for the end is transmitted, the measuring data of the corresponding slave And controls the transmission MUX to be transmitted to the transmitting end.

Further, the data frame of the data transfer command may include a start identifier, an instruction field, a number of slave IDs, a slave ID, and an end identifier field.

In addition, the data transmission command may be such that, upon retransmission according to the command field, a slave ID that has been successfully transmitted is sent so that only measurement data of the remaining slaves can be retransmitted.

In addition, the data frame added by the slave node includes a telemetry device ID, a transmission method, a data length, a channel address used for terrestrial transmission of a telemetry item, measurement data, a parity, and an end identifier field . ≪ / RTI >

When the field value is 00, the channel address is not transmitted. If the field value is 10, only the first address of the consecutive channel address is transmitted. If the field value is 11, And transmits all of the channel addresses.

On the other hand, another embodiment of the present invention is characterized in that the master node transmits a data transfer command to a plurality of slave nodes; And continuously transmitting measurement data sequentially measured by the plurality of slave nodes according to a data transfer command of the master node, wherein the plurality of slave nodes are configured to transmit the measurement channel The method of controlling a network system for a telemetry device according to the present invention is characterized by having information in advance.

According to the present invention, network efficiency can be improved by continuously attaching and transmitting data of slaves to a network system suitable for the characteristics of a telemetry device that periodically receives data of all slaves.

Further, another effect of the present invention is that it is possible to make quick modification and economical because the slaves contain channel information so that only a slave device can be added and / or changed without modifying the master device upon addition and / or change of measurement items.

1 is a configuration diagram of a network 100 according to an embodiment of the present invention.
2 is a configuration diagram of a slave node 120-1 according to an embodiment of the present invention.
3 is a conceptual diagram of continuous data transmission according to an embodiment of the present invention.
4 is a data frame transmitted from a master node according to an embodiment of the present invention.
5 is a data frame transmitted from the slave node.
6 is a flowchart illustrating a process of transmitting continuous data according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for similar elements in describing each drawing.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. The term "and / or" includes any combination of a plurality of related listed items or any of a plurality of related listed items.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Should not.

Hereinafter, a network system for a telemetry apparatus according to an embodiment of the present invention and a control method thereof will be described in detail with reference to the accompanying drawings.

The present invention relates to a structure and a protocol of a network system for a telemetry apparatus having a ring structure. The network system according to an embodiment of the present invention can continuously transmit measurement data of all slave nodes according to a command of the master node. In addition, since the slave has channel information of the measurement item, it is possible to add and / or change only the slave without changing the master device upon adding and / or changing the measurement item. Also, according to the command of the master node, only the data of the slaves having an error in the transmission data is retransmitted.

1 is a configuration diagram of a network 100 according to an embodiment of the present invention. Referring to FIG. 1, a network 100 includes a master node 110 and first to third slave nodes 120-1, 120-2, and 120-3.

The master node 110 and the first to third slave nodes 120-1, 120-2, and 120-3 have a receiving end and a transmitting end. The master node 110 is connected to the receiving end 111 and the transmitting end 112 and the first to third slave nodes 120-1, 120-2 and 120-3 are connected to the receiving end 111 and the transmitting end 112 ).

Thus, the transmitting nodes 112 and 122 of each node are connected to the receiving nodes 112 and 122 of neighboring nodes. In particular, the network 100 is configured in a unidirectional ring network manner and transmits data measured by the first to third slave nodes 120-1, 120-2, and 120-3 according to a data transfer command of the master node 110 Method.

2 is a configuration diagram of a slave node 120-1 according to an embodiment of the present invention. 2, the slave node 120-1 includes a receiving end 121 for receiving a data transfer command and / or data from a master node (110 in FIG. 1), a data transfer command and / A measurement data buffer 240 for buffering the collected measurement data, a reception buffer 210 for monitoring the contents of the reception buffer 210, A control unit 230 for determining whether to transmit measurement data of a slave node or not and receiving measurement data and data transmission commands from the reception buffer 210 and the measurement data buffer 240 under the control of the control unit 230 A transmission MUX 220 for selecting one of the transmission MUX 220 and the transmission MUX 220, a transmission terminal 122 for transmitting measurement data and / or a data transmission command selected by the transmission MUX 220, and the like.

In particular, the controller 230 checks the contents of the reception buffer and determines whether to transmit the received data or the measurement data of the corresponding slave in the control unit. This will be described later with reference to FIG.

Of course, the first slave node 120-1 has been described as a plurality of slave nodes in FIG. 2, but the remaining second slave node 120-2 and the third slave node 120-3 have been described with reference to FIG. 2 The structure is similarly changed.

3 is a conceptual diagram of continuous data transmission according to an embodiment of the present invention. Referring to FIG. 3, when the master node 110 transmits a data transfer command to the first slave node 120-1, the first slave 120-1 receives data received at the receiving end (121 in FIG. 1) (Most significant bit) of the reception buffer is shifted by one bit in accordance with the input of the receiving end, and the MSB (Most Significant Bit) of the receiving buffer is stored in the transmitting MUX To 220 of FIG.

The control unit 230 controls the transmission MUX 220 to transmit the data input to the receiving end 121 to the transmitting end 122 before confirming the receiving buffer 210. FIG. When all the received data except for the end is transmitted, the transmission MUX 220 is controlled so that the measurement data (301, 302, 303) of the slave is transmitted to the transmitting end.

4 is a data frame transmitted from a master according to an embodiment of the present invention. Referring to FIG. 4, 2 bits are allocated to the command field of the data frame transmitted from the master node.

First, if the command field is 00, the data frame consists of the start, command and end identifier fields, and all the slaves sequentially transmit the measurement data.

Second, when the command field is 01, the data frame is composed of the start, the command, the number of slave IDs, the slave ID (of the slave node to which the measurement data is transmitted), and the end identifier field, Only the slave node that contains the ID of the node transmits the measurement data.

Finally, when the command field is 10, the data frame is composed of the start, the command, the number of slave IDs, the slave ID (of the slave node not to transmit measurement data), and the end identifier field. Only slaves that do not contain the ID of the node send measurement data.

In the case where the channel address at the time of terrestrial transmission of the telemetry item exists only in the master node (110 in FIG. 1), not only the slave node (120-1, 120-2, 120-3 in FIG. 1) The master node needs to be modified.

However, if the slave node has the channel address as in the embodiment of the present invention, it is convenient to add / change only the corresponding device when adding / changing the measurement item. However, when the network is used in this way, not all the slave IDs are registered in the master node, so the ID information of the succeeding slave node should be sent instead of the slave node ID to be retransmitted when data is retransmitted. Then, at the time of retransmission, the slave nodes see the ID information of the successful slave node transmitted from the master node, and only the slave nodes that are not there re-transmit the measured data again.

5 is a data frame transmitted from the slave node. Referring to FIG. 5, a data frame of a slave node is composed of a telemetry device ID, a transmission method, a data length, a channel address, measurement data, a parity, and an end identifier field. The transmission method field is a method of transmitting a channel address. If the transmission method field is 00, the channel address is not transmitted. If the measured data channel of the slave is continuous, the transmission method field is 10 and only the first of the consecutive channel addresses is transmitted. When the measurement data channel of the slave is discontinuous, the transmission method field is 11 and all the channel addresses are transmitted.

6 is a flowchart illustrating a process of transmitting continuous data according to an embodiment of the present invention. Referring to FIG. 6, the master node 110 transmits a data transfer command to the first slave node (120-1 in FIG. 1) for transmission of the measurement data (step S610).

In the first slave (120-1 in FIG. 1), the data received at the receiving end (121 in FIG. 1) is stored in the least significant bit (LSB) of the receiving buffer (210 in FIG. 2) (MSB) of the reception buffer to the transmission MUX (220 in FIG. 2) (steps S620 and S630).

The control unit 230 of FIG. 2 checks whether the reception of the end input is confirmed by checking the reception buffer 210 (step S640).

If it is determined in step S640 that the reception of the end input is not confirmed, the transmission MUX 220 is controlled so that the data input to the reception end 121 is transmitted to the transmission end 122 before. When all the received data except for the end is transmitted, the transmission MUX 220 is controlled so that the measurement data of the corresponding slave is transmitted to the transmitting end, and the end is transmitted when the transmission is finished (steps S650 and S660).

100: Network
110: master node
120-1: first slave node
120-2: second slave node
120-3: third slave node
111, 121:
112,

Claims (11)

A master node; And
And a plurality of slave nodes continuously transmitting measurement data sequentially measured according to a data transfer command of the master node and having channel information of a corresponding measurement item for generating the measurement data in advance,
Wherein only the corresponding slave node having an error in the measurement data to be transmitted among the plurality of slave nodes retransmits the measurement data.
The method according to claim 1,
Wherein the network is a unidirectional ring network.
delete The method according to claim 1,
The slave device of the network,
A receiving terminal for receiving a data transmission command or reception data from an adjacent slave node among the master node or a plurality of slave nodes;
A receiving buffer for buffering received data transfer commands or received data;
A measurement data collection unit for collecting measurement data;
A measurement data buffer for buffering the collected measurement data;
A control unit for confirming the contents of the reception buffer and determining whether to transmit the reception data or the measurement data of the slave node;
A transmission MUX for receiving measurement data, reception data, and data transmission commands from the reception buffer and the measurement data buffer under the control of the control unit and outputting the reception data and the data transmission commands; And
And a transmitting terminal for transmitting any one of the output measurement data, the reception data, and the data transmission command.
5. The method of claim 4,
Wherein,
Stores the received data in the reception terminal in the LSB (Least Significant Bit) of the reception buffer, shifts the received data by 1 bit according to the input of the reception terminal, and transfers the MSB (Most Significant Bit) of the reception buffer to the transmission MUX Network system for telemetry devices.
5. The method of claim 4,
Wherein,
The control unit controls the transmission MUX so that the reception data inputted to the reception end is transmitted to the transmission end before the end input while confirming the reception buffer, and when the reception data other than the end is transmitted, the measurement data of the slave is transmitted to the transmission end Wherein the control unit is configured to control the control unit.
The method according to claim 1,
Wherein the data frame of the data transfer command comprises a start identifier, a command field, a number of slave IDs, a slave ID, and an end identifier field.
8. The method of claim 7,
Wherein the data transmission command allows the slave ID, which has been successfully transmitted, to be transmitted at retransmission according to the command field so that only the measurement data of the remaining slaves can be retransmitted.
The method according to claim 1,
The data frame added by the slave node includes at least one of a telemetry device ID field, a transmission mode field, a data length field, a channel address field used for terrestrial transmission of a telemetry item, a measurement data field, a parity field, And a field for a telemetry device.
10. The method of claim 9,
If the field value is 00, the channel address is not transmitted. If the field value is 10, only the first address of the consecutive channel address is transmitted. If the field value is 11, Is transmitted to the remote control apparatus.
A control method of a network system for a telemetry apparatus according to claim 1,
The master node transmitting a data transfer command to a plurality of slave nodes; And
And sequentially transmitting measurement data sequentially measured by the plurality of slave nodes according to a data transfer command of the master node,
Wherein the plurality of slave nodes previously have channel information of a corresponding measurement item for generating the measurement data.

Images