KR101516370B1 - System and method for identifier allocation of multi-slave - Google Patents

Abstract

The present invention discloses a system and method by which a master unit can simply assign an identifier to each slave unit. In an identifier allocation system according to the present invention, N slave units and a master unit are connected through a communication network. Each of the slave units has a switch for interrupting connection of a communication network in one direction in the communication network. The master unit allocates temporary identifiers to all of the N slave units, and then controls all the switches that can block the connection of the communication network to be turned off. Then, a unique identifier is sequentially assigned to the slave unit, and the switch is turned on so that the connection to the communication network can be sequentially blocked.

Description

[0001] SYSTEM AND METHOD FOR IDENTIFIER ALLOCATION OF MULTI-SLAVE [0002]

The present invention relates to a system and method in a master-slave structure system in which a master unit assigns an identifier to each slave unit.

A method of connecting all control objects to one control device and controlling them is an inefficient method as the number of control objects increases. Therefore, a plurality of control objects are divided into predetermined units, and the slave units can be controlled for each unit. A method is also widely used in which a plurality of slave units are controlled by one master unit to efficiently control a plurality of control objects.

In this case, the master unit and the plurality of slave units are connected to each other through a communication network for transmission / reception of control information or control information. All the slave units receive the control signal of the master unit via the communication network. Therefore, in order for the control signal of the master unit to be transmitted only to a specific slave unit, each slave unit needs to be assigned a unique identifier (ID).

To this end, a method of reading identifier information preset on a hardware circuit included in a slave unit or assigning an identifier by executing a complicated software algorithm to each slave unit has been adopted.

Such a conventional scheme has a problem in that it requires a large amount of resources and requires a complicated identifier allocation scheme since individual hardware or software driving mechanisms are required and managed as many as the number of slave units.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a system and a method by which a master unit can easily assign an identifier to each slave unit.

According to an aspect of the present invention, there is provided a slave unit comprising: a communication line capable of forming a communication network; A first switch located on the communication line and capable of blocking a communication network connection in any one direction in the communication network; And a slave unit controller connected to the communication line and receiving a control signal and being assigned a temporary identifier and a unique identifier.

The slave unit according to the present invention may further include a memory unit capable of storing a temporary identifier and a unique identifier allocated through the communication network.

The slave unit according to the present invention may be a battery module including a plurality of secondary battery cells or a management device for a battery pack.

According to an aspect of the present invention, there is provided an identifier allocation system comprising N (N is a natural number of 2 or more) slave units; And a master unit control unit having a master unit control unit for transmitting an on / off control signal of the first switch to the slave unit, and assigning a temporary identifier and a unique identifier, wherein the N slave unit and the master unit It is connected through a communication network.

According to an embodiment of the present invention, the first switch is connected to the communication line so as to block an opposite communication network to which the master unit is connected.

According to an embodiment of the present invention, the temporary identifiers allocated to the N slave unit controllers are all the same.

According to another aspect of the present invention, there is provided a method of assigning an identifier to N (N is a natural number of 2 or more) slave units connected through a communication network, the method comprising the steps of: (a) Assigning temporary identifiers to the slave unit control units; (b) a master unit control unit outputting a control signal to the N slave unit control units via the communication network to turn off a first switch capable of interrupting a connection state in any one direction in the communication network; (c) the master unit control unit calls the temporary identifier through the communication network and assigns a unique identifier to the slave unit control unit responding to the temporary identifier among the N slave unit control units; And (d) outputting a control signal to the master unit control unit to turn on the first switch to the slave unit control unit to which the unique identifier is assigned in the step (c).

According to an embodiment of the present invention, the first switch may block the connection state of the communication network in the opposite direction to which the master unit is connected.

According to an embodiment of the present invention, the temporary identifiers are all the same.

The identifier allocation method according to the present invention may be an identifier allocation method for a battery module including a plurality of secondary battery cells or a management device for a battery pack.

According to an aspect of the present invention, there is provided a slave unit comprising: a communication line capable of forming a communication network; A first switch located on the communication line and capable of blocking connection of a communication network in one direction in the communication network; A second switch located on the communication line and capable of blocking connection of the communication network in the other direction in the communication network; And a slave unit controller for outputting a signal for controlling on / off of the first switch or the second switch and connected to the communication line to receive a control signal and to assign a temporary identifier and a unique identifier.

The slave unit according to the present invention may further include a memory unit capable of storing a temporary identifier and a unique identifier allocated through the communication network.

The slave unit according to the present invention may be a battery module including a plurality of secondary battery cells or a management device for a battery pack.

According to an aspect of the present invention, there is provided an identifier allocation system comprising N (N is a natural number of 2 or more) slave units; And a master unit control unit for transmitting an on / off control signal of the first switch or the second switch to the slave unit, and assigning a temporary identifier and a unique identifier, wherein the N unit slave unit And the master unit are connected through a communication network.

According to an embodiment of the present invention, before the master unit control unit assigns the unique identifier, the switch in the direction in which the master unit is connected among the first switch or the second switch is turned on, Directional switch outputs a control signal to turn off.

According to an embodiment of the present invention, the temporary identifiers allocated to the N slave unit controllers are all the same.

According to another aspect of the present invention, there is provided a method of assigning an identifier to N (N is a natural number of 2 or more) slave units connected through a communication network, the method comprising the steps of: (a) Assigning temporary identifiers to the slave unit control units; (b) a switch in the direction in which the master unit is connected, among the first switch capable of interrupting the communication network connection in one direction in the communication network or the second switch capable of interrupting the communication network connection in the other direction in the communication network, And outputting a control signal to turn off the switch in the direction opposite to the direction in which the master unit is connected; (c) the master unit control unit calls the temporary identifier through the communication network and assigns a unique identifier to the slave unit control unit responding to the temporary identifier among the N slave unit control units; And (d) outputting a control signal to the master unit control unit to turn on the switch in the direction opposite to the direction in which the master unit is connected to the slave unit control unit to which the unique identifier is assigned in the step (c).

According to an embodiment of the present invention, the temporary identifiers are all the same.

The identifier allocation method according to the present invention may be an identifier allocation method for a battery module including a plurality of secondary battery cells or a management device for a battery pack.

According to an aspect of the present invention, in a master-slave structure system, the master unit can easily assign an identifier to each slave unit. Therefore, no separate hardware or software driving mechanism is required as many as the number of slave units.

According to another aspect of the present invention, the master slave unit can assign an identifier to the slave unit irrespective of the number of slave units.

According to another aspect of the present invention, an identifier may be assigned to a slave unit irrespective of the position to which the master unit is connected.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further the understanding of the technical idea of the invention, And should not be construed as limiting.
1 is a block diagram schematically illustrating a configuration of an identifier allocation system according to an embodiment of the present invention.
FIG. 2 to FIG. 7 are block diagrams schematically illustrating a procedure in which a master unit assigns an identifier to a slave unit according to an embodiment of the present invention.
8 is a block diagram schematically showing a configuration of an identifier allocation system according to another embodiment of the present invention.
9 to 11 are block diagrams schematically showing a sequence in which a master unit assigns an identifier to a slave unit according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

1 is a block diagram schematically illustrating the configuration of an identifier allocation system 100 according to an embodiment of the present invention.

Referring to FIG. 1, an identifier allocation system 100 according to an embodiment of the present invention includes a master unit 110 and N (N is a natural number of 2 or more) slave units 120. The number of the slave units 120 may be variously set according to the number, size, characteristics, etc. of the control objects.

The slave unit 120 includes a communication line 121, a first switch 122, and a slave unit control unit 123.

The communication line 121 forms the communication network 130. Therefore, as shown in FIG. 1, the master unit 110 and the N slave units 120 are connected to each other through a communication network 130. The master unit control unit 111 may receive information required for control from the N slave unit control units 123 or transmit control signals to the slave unit control units 123 through the communication network 130. [ On the other hand, each of the slave unit control units 123 through the communication network 130 transmits information of the object managed by the slave unit control unit 111 to the master unit control unit 111 or receives a control signal from the master unit control unit 111 .

The communication protocol of the communication network 130 follows the communication protocol of the parallel communication network. The parallel communication network is a communication network in which a plurality of units are connected to one communication line. Therefore, the master unit control unit 111 and the N slave unit control units 123 connected to the communication network 130 need an identifier (ID) for identifying the source and destination of data.

The communication network 130 may be a serial communication network in which the units are connected in series, or may be a parallel communication network in which the units are connected in parallel. For example, the communication network 130 may be a CAN (Controller Area Network) communication network, and the CAN communication network is a well-known technology to those skilled in the art, so a detailed description thereof will be omitted.

The first switch 122 may be located on the communication line 121 to block connection of the communication network in any one direction in the communication network.

1, the first switch 122 is connected to a position where the master unit 110 of the communication network can be disconnected in the opposite direction to which the master unit 110 is connected.

 For example, the first switch 122-1 included in the slave unit 120-1 located at the bottom of FIG. 1 will be described. If the state of the first switch 122-1 is on, the control of the master unit 110 is also performed for the other slave units 120-2 to 120-N connected after the slave unit 120-1. A signal can be transmitted. However, when the state of the first switch 122-1 is off, the slave unit 120-1 is connected to the slave units 120-2 to 120- Can not be transmitted. Therefore, the first switch 122 may be located on the communication line 121 to block the connection of the communication network in any one direction in the communication network 130.

The slave unit control unit 123 outputs a signal for controlling the first switch 122 to be turned on or off. The slave unit control unit 123 is connected to the communication line 121 to perform a control operation by receiving the control signal transmitted from the master unit control unit 111, As shown in Fig. In addition, the master unit controller 111 allocates and stores temporary IDs and unique IDs.

The slave unit 120 according to the present invention may further include a memory unit 124 that can store a temporary identifier and a unique identifier allocated through the communication network 130.

The memory unit 124 may be located inside or outside the slave unit control unit 123 and may be connected to the slave unit control unit 123 by various well-known means. The memory unit 124 is a mass storage medium such as a known semiconductor device or a hard disk that is known to record and erase data such as RAM, ROM, and EEPROM, and collectively refers to a device in which information is stored regardless of the type of device And does not refer to a specific memory device.

The master unit 110 includes a master unit control unit 111.

The master unit control unit 111 transmits a signal for controlling the first switch to each of the slave units 120 through the communication network 130. Then, a temporary identifier and a unique identifier are assigned to each of the slave units 120.

Hereinafter, an identifier allocation method according to an embodiment of the present invention will be described with reference to FIG. 2 to FIG.

FIG. 2 to FIG. 7 are block diagrams schematically illustrating a procedure in which a master unit assigns an identifier to a slave unit according to an embodiment of the present invention.

Referring to FIG. 2, the slave unit controller 123 controls the first switch 122 to be on unless there is a separate control signal. Referring to FIG. 2, the master unit 110 and the N slave units 120 are connected to each other through the communication network 130.

First, the master unit control unit 111 assigns temporary identifiers to the N slave unit control units 123 through the communication network 130. [ At this time, the N slave unit control units 123 are all assigned the same identifier through the communication network, and store the same identifiers in the memory unit 124.

For convenience of understanding, an identifier currently assigned to the memory unit 124 included in the slave unit 120 is shown. In one example, the temporary identifier is set to '00'. Therefore, as shown in FIG. 2, N memory units 124 are shown with 'ID = 00'.

Referring to FIG. 3, the master unit control unit 111 outputs a signal to the N slave unit control units 123 via the communication network 130 to turn off the first switch 122. Then, the N slave unit controller 123 outputs a control signal such that each of the first switches 122 is turned off. Therefore, only the master unit control unit 111 and the slave unit control unit 120-1 shown at the bottom can communicate with each other through the communication network 130.

Referring to FIG. 4, the master unit control unit 111 assigns a unique identifier to the slave unit control unit 123 having a temporary identifier through the communication network 130.

As described above, only the master unit control unit 111 and the slave unit control unit 120-1 shown at the bottom of the current state can communicate with each other through the communication network 130 in the current state. Accordingly, when the master unit control unit 111 calls with a temporary identifier (ID = 00), only the slave unit control unit 120-1 shown at the bottom is responded. Therefore, when the master unit control unit 111 assigns a unique identifier (ID = 01), only the slave unit control unit 120-1 shown at the bottom is assigned a unique identifier (ID = 01).

5, the master unit control unit 111 controls the slave unit control unit 123, which has received the unique identifier through the communication network 130, to turn on the first switch 122 And outputs a signal. At this time, the unique identifier is 'ID = 01' as the identifier allocated in the immediately preceding step. Therefore, the slave unit control unit 120-1 shown at the bottom of the figure outputs a control signal so that the first switch 122-1 is turned on. Thus, the master unit control unit 111 and the second slave unit control unit 120-2, which is the second lowest unit, can communicate with each other through the communication network 130.

Referring to FIG. 6, the master unit control unit 111 assigns a unique identifier to the slave unit control unit 123 having the temporary identifier through the communication network 130.

The master unit control unit 111 and the slave unit control unit 120-1 shown at the bottom and the slave unit control unit 120-2 shown at the bottom of the master unit control unit 120-1 are connected to the communication network 130 Communication is possible. At this time, when the master unit control unit 111 calls with a temporary identifier (ID = 00), only the second slave unit control unit 120-2 shown at the lower end responds. Accordingly, when the master unit control unit 111 assigns a unique identifier (ID = 02), the slave unit control unit 120-2 shown at the second lowest position is assigned a unique identifier (ID = 02).

Referring to FIG. 7, the master unit control unit 111 controls the slave unit control unit 123, which has received the unique identifier through the communication network 130, to turn on the first switch 122 And outputs a signal. At this time, the unique identifier is 'ID = 02' as the identifier allocated in the immediately preceding step. Accordingly, the slave unit control unit 120-2, which is shown second from the bottom, outputs a control signal so that the first switch 122-2 is turned on. Thus, the master unit control unit 111 and the slave unit control unit 120-3, which is shown at the third lowest level, can communicate with each other through the communication network 130.

As can be seen from Figs. 4 to 7, the step of Fig. 4 corresponds to the step of Fig. 6, and the step of Fig. 5 corresponds to the step of Fig. Accordingly, the master unit control unit 111 sequentially assigns a unique identifier to the slave unit control unit 123 while repeatedly executing the steps of FIG. 4 and FIG. If all of the N slave unit control units 123 are assigned a unique identifier, the identifier assigning process ends.

FIG. 8 is a block diagram schematically showing the configuration of an identifier allocation system 200 according to another embodiment of the present invention.

Referring to FIG. 8, an identifier allocation system 200 according to another embodiment of the present invention includes a master unit 210 and N (N is a natural number of 2 or more) slave units 220.

The slave unit 220 includes a communication line 223, a first switch 221, a second switch 222 and a slave unit control unit 224. The difference between the slave unit 220 and the slave unit 220 included in the identifier allocation system 100 shown in FIG. 1 is that the second switch 222 is further included.

The first switch 221 and the second switch 222 may be located on the communication line 223 to block the connection of the communication network in one direction or the connection of the communication network in the other direction in the communication network 230 . 1, the identifier allocation system 200 according to another embodiment of the present invention may be configured such that the master unit 210 is located at the top or bottom of the N slave units 220, Can also be connected to.

The slave unit 220 may further include a memory unit 225 and the master unit 210 may further include a master unit control unit 211. [ The description of each of the above-described components is redundant with the description of the identifier allocation system 100 shown in FIG. 1, so that repetitive description will be omitted.

Hereinafter, an identifier allocation method according to another embodiment of the present invention will be described with reference to FIGS. 9 to 11. FIG.

9 to 11 are block diagrams schematically showing a sequence in which a master unit assigns an identifier to a slave unit according to another embodiment of the present invention.

The slave unit control unit 224 controls the first switch 221 and the second switch 222 to be on unless there is no separate control signal. Referring to FIG. 9, the master unit 210 and the N slave units 220 are connected to each other through the communication network 130.

First, the master unit control unit 211 allocates temporary identifiers to the N slave unit control units 224 through the communication network 230. [ At this time, the N slave unit control units 224 are all assigned the same identifier through the communication network and store them in the memory unit 225.

The identifiers currently assigned to the memory unit 225 included in the slave unit 220 are shown for the sake of convenience. In one example, the temporary identifier is set to '00'. Therefore, as shown in FIG. 9, 'ID = 00' is shown in N memory units 225.

Referring to FIG. 10, the master unit control unit 211 informs the N slave unit control units 123 of any one of the first switch 221 and the second switch 222 through the communication network 230 And outputs a signal to turn off the switch. At this time, the switch controlled to be turned off is a switch connected to a position where the communication network of the opposite direction connected to the master unit 210 of the communication network 230 can be blocked. 10, since the master unit 210 is connected to the upper end of the drawing, the second switch 222 of each slave unit 220 is connected to the first switch 222, Is turned off. Thus, the N slave unit control unit 224 outputs a control signal such that each second switch 222 is turned off. Thus, only the master unit control unit 211 and the slave unit control unit 220-1 shown at the top can communicate through the communication network 230.

Referring to FIG. 11, the master unit control unit 211 assigns a unique identifier to the slave unit control unit 224 having a temporary identifier through the communication network 230.

As described above, in the current state, only the master unit control unit 111 and the slave unit control unit 220-1 shown at the uppermost position can communicate through the communication network 230. Therefore, when the master unit control unit 211 calls with a temporary identifier (ID = 00), only the slave unit control unit 220-1 shown at the top is responded. Accordingly, when the master unit control unit 211 assigns a unique identifier (ID = 01), only the slave unit control unit 220-1 shown at the uppermost position is assigned a unique identifier (ID = 01).

The master unit control unit 211 outputs a control signal to turn on the second switch 222 to the slave unit control unit 224 that has received the unique identifier through the communication network 230. At this time, the unique identifier is 'ID = 01' as the identifier allocated in the immediately preceding step. Therefore, the slave unit control unit 220-1 shown at the top outputs a control signal so that the second switch 222-2 is turned on. Thus, the master unit control unit 211 and the second slave unit control unit 220-2 shown at the top can communicate through the communication network 230.

The subsequent steps are similar to the identifier assigning method according to the embodiment of the present invention described above with reference to FIG. 2 to FIG. 7, except that the second switch 222 is controlled instead of the first switch 221. Therefore, repetitive description will be omitted.

The slave units 120 and 220 according to the present invention may be a battery module including a plurality of secondary battery cells or a management device of the battery pack.

The battery module or the battery pack (not shown) includes at least one secondary battery cell, and the type of the secondary battery cell is not particularly limited. Each secondary battery cell can be composed of a lithium ion battery, a lithium polymer battery, a nickel cadmium battery, a nickel metal hydride battery, a nickel zinc battery, or the like, which can be recharged and take charge or discharge voltage into consideration. In addition, the number of secondary battery cells included in the battery module or the battery pack may be variously set according to the required output voltage or charging capacity. However, the present invention is not limited by the kind of the secondary battery cell, the output voltage, the charging capacity, and the like.

The slave units 120 and 220 are devices for managing the battery modules or the battery packs. The slave units 120 and 220 are devices for managing the charge or discharge of the battery module or the battery pack, the voltages of the battery module or the battery pack, Such as the measurement of electrical characteristics including voltage or current, charge / discharge control, equalization control of voltage, estimation of state of charge (SOC), and the like.

Furthermore, the identifier allocation system 100 or 200 according to the present invention including the slave units 120 and 220 may also be included in the management system of the battery module or the battery pack, And can be executed as part of the management method of the battery pack.

The master unit control units 111 and 211 and the slave unit control units 123 and 224 may be implemented by a processor, an application-specific integrated circuit (ASIC), another chipset, Circuitry, registers, communication modems, data processing devices, and the like. Also, when the control logic is implemented in software, the master unit control units 111 and 211 and the slave unit control units 123 and 224 may be implemented as a set of program modules. At this time, the program modules are stored in the memory units 124 and 225 and can be executed by the processor.

According to the present invention, in a master-slave structure system, the master unit can easily assign an identifier to each slave unit. Therefore, no separate hardware or software driving mechanism is required as many as the number of slave units. Further, the master slave unit can assign an identifier to the slave unit irrespective of the number of slave units. According to an embodiment, an identifier may be assigned to a slave unit regardless of the location where the master unit is connected.

In the meantime, in describing the present invention, each of the configurations of the identifier allocation systems 100 and 200 according to the present invention shown in FIGS. 1 to 11 is not a physically separated component but a logically separated component .

That is, since each configuration corresponds to a logical component for realizing the technical idea of the present invention, even if each component is integrated or separated, if the functions performed by the logical configuration of the present invention can be realized, And it is to be understood that any component that performs the same or similar function should be construed as being within the scope of the present invention irrespective of the consistency of the name.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not to be limited to the details thereof and that various changes and modifications will be apparent to those skilled in the art. And various modifications and variations are possible within the scope of the appended claims.

100: Identifier allocation system
110: Master unit
111: Master unit control section
120: Slave unit
121: Communication line
122: first switch
123: Slave unit control section
124:
130: communication network
200: Identifier assignment system
210: Master unit
211: Master unit control section
220: Slave unit
221: first switch
222: second switch
223: communication line
224: Slave unit control section
225:
230: Network

Claims (19)

delete delete delete delete delete delete A method for allocating an identifier to N (N is a natural number of 2 or more) slave units connected through a communication network,
(a) the master unit control unit assigns a temporary identifier to the N slave unit control units via the communication network;
(b) a master unit control unit outputting a control signal to the N slave unit control units via the communication network to turn off a first switch capable of interrupting a connection state in any one direction in the communication network;
(c) the master unit control unit calls the temporary identifier through the communication network and assigns a unique identifier to the slave unit control unit responding to the temporary identifier among the N slave unit control units; And
(d) outputting a control signal to the master unit control unit to turn on the first switch to the slave unit control unit to which the unique identifier is allocated in the step (c). 8. The method of claim 7,
Wherein the first switch is capable of blocking a connection state in the opposite direction to which the master unit is connected among the communication networks. 8. The method of claim 7,
And the temporary identifiers are all the same. The identifier assigning method according to claim 7,
Wherein the identifier allocation method is an identifier allocation method for a battery module including a plurality of secondary battery cells or a management device for a battery pack. delete delete delete delete delete delete A method for allocating an identifier to N (N is a natural number of 2 or more) slave units connected through a communication network,
(a) the master unit control unit assigns a temporary identifier to the N slave unit control units via the communication network;
(b) a switch in the direction in which the master unit is connected, among the first switch capable of interrupting the communication network connection in one direction in the communication network or the second switch capable of interrupting the communication network connection in the other direction in the communication network, And outputting a control signal to turn off the switch in the direction opposite to the direction in which the master unit is connected;
(c) the master unit control unit calls the temporary identifier through the communication network and assigns a unique identifier to the slave unit control unit responding to the temporary identifier among the N slave unit control units; And
and (d) outputting a control signal to the master unit control unit to turn on the switch in the direction opposite to the direction in which the master unit is connected to the slave unit control unit to which the unique identifier is assigned in the step (c) . ≪ / RTI > 18. The method of claim 17,
And the temporary identifiers are all the same. The method of assigning an identifier according to claim 17,
Wherein the identifier allocation method is an identifier allocation method for a battery module including a plurality of secondary battery cells or a management device for a battery pack.

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