KR100352847B1 - A decision circuit of separation and connection for shelf - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circuit for determining the mounting and dismounting state of a unit in a system equipment. More particularly, the present invention relates to determining the dismounting state of a plurality of units by a matrix detection method using a small number of diodes. A management control unit for determining a unit to be mounted or mounted on a shelf, comprising: a plurality of three-state horizontal line buffers for determining a horizontal line mounting state of the unit, a plurality of vertical line buffers for determining a vertical line mounting state of the unit, and each of the vertical lines And a plurality of pull-up resistors connected to the input side of the buffer, and an address diode for confirming the address of the management control unit, and wherein the state of mounting or dismounting the self is determined by the management control unit. Wherein the unit is applied from a horizontal row buffer of a management control unit. Another feature is that a blocking diode for blocking the status signal is included. As a simple circuit, the effect of easily detecting the mounting / mounting state of a plurality of units and the number of units mounted are relatively high. There is an industrial and industrial use effect that the discriminating circuit is simplified and the manufacturing cost is lowered.

Description

Self-detachment unit discrimination circuit {A DECISION CIRCUIT OF SEPARATION AND CONNECTION FOR SHELF}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a circuit for determining the mounting and dismounting state of a board or a unit in a self. Especially, a small number of diodes are used for the matrix detection method. The present invention relates to determining the mounting / separation state of a plurality of units.

The system equipment is composed of a plurality of boards or units inserted in the self, and whether or not a plurality of units having a unique function is mounted or not is determined by a management function unit (MFU) to generate a corresponding control signal, or By generating an alarm signal, the unit configuration of the system is managed.

Hereinafter, with reference to the accompanying drawings, a description will be made of a unit mounting and determining circuit according to the prior art.

Attached for the purpose of describing the prior art, FIG. 1 is a circuit diagram of the unit mounting and detachment determination circuit according to the prior art.

Referring to FIG. 1 above, by monitoring and controlling a system, a main device operates as a main device, and a plurality of pull-up resistors are included to determine whether a plurality of units are to be mounted or not to be described later. Managed control unit (MFU) (10),

By having the same configuration and function as the management control unit 10, if a trouble occurs in the management control unit 10, the management control unit for standby (Standby) 15 to immediately replace the operation )Wow,

As a circuit board mounted in the system, the uses are different from each other, and a plurality of units (30, 30N) each including pull-down resistors are included in terminals connected to the management control unit 10. do.

With reference to the accompanying drawings, a unit mounting and hernia discrimination circuit according to the prior art of the above configuration will be described in detail.

The management control units 10 and 15 are electrically connected to the units 30 and 30N mounted on the connection connectors not shown in detail in the drawings.

The pull-down resistors 25 of the units 30 and 30N are grounded and, when mounted on the connector, pull-up resistors 20 of the management control units 20 and 25 connected to the supply power supply Vcc. ), The supply power (Vcc) flows to the ground (Ground), so that the control power supply unit (10, 15) does not detect the supply power, it is recognized as a signal of the low level '0' do.

In addition, when the units 30 and 30N are detached from the connector, the pull-up resistor 20 is disconnected from the pull-down resistor 25 and disconnected from the ground, so that the power supply Vcc is pulled up. By being applied to the resistors of the management control units 10 and 15 through the resistor 20, the supply power source Vcc is detected and recognized as '1', which is a high level.

Although not shown in detail in Figure 1, the register is provided with the same number as the number of units (30, 30N) to determine the state of the mounting.

Therefore, whether or not the units 30 and 30N are mounted or demounted is a state in which the supply power is detected by the register, that is, when the unit 30 or 30N is detached and is low level. Is determined by the management control units 10 and 15 in a state where the units 30 and 30N are mounted.

However, since the pull-up resistor 20 corresponding to one-to-one correspond to the units 30 and 30N, the prior art having the above-described configuration requires an example in which a plurality of the mounted units 30 and 30N are mounted. In the case of 40 unit numbers, 40 pull-up resistors 20 should be provided, and 40 registers for detecting the mounting state of the units 30 and 30N should also be provided. There is a problem that the pattern is very complicated with 40.

Therefore, as the number of units 30 and 30N increases, there is a problem that the configuration of the circuit for determining the state of mounting and mounting becomes more complicated.

SUMMARY OF THE INVENTION An object of the present invention is to provide a self-mounting unit determining circuit for self-mounting which can determine the mounting state of a large number of units by arranging a small number of diodes in a matrix.

In order to achieve the above object, the present invention provides a plurality of three-state horizontal line buffers for determining a horizontal line mounting state of a unit in a management control unit for determining a unit to be mounted or mounted on a self, and a vertical line mounting of a unit. A plurality of vertical line buffers for determining a state, a plurality of pull-up resistors respectively connected to the input side of each vertical line buffer, and an address diode for confirming an address of a management control unit are included.

In addition, in a unit in which the state of mounting or dismounting the self is determined by the management control unit, the unit may further include a blocking diode for blocking a high state signal applied from the horizontal row buffer of the management control unit.

1 is a circuit diagram of a unit mounting state determination according to the prior art,

Fig. 2 is a circuit diagram of unit mounting and detachment determination circuit of the self according to the present invention.

** Explanation of symbols on the main parts of the drawing **

10,15,40,40 ': Management control unit 20,20': Pullup resistor

25: pull-down resistor 30,30N, 50,50N: unit

42,42 ': Horizontal buffer Buffer 44,44': Vertical buffer

46,46 ': Address diode 60,60N: Blocking diode

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a self-mounting unit discrimination determination circuit according to the present invention will be described with reference to the accompanying drawings.

2 is a circuit diagram of a unit mounting and detachment determination of a self according to the present invention.

Referring to the attached FIG. 2, the self-mounting unit determination circuit of the self according to the present invention is characterized in that in the management control units 40, 40 'for discriminating the units 50, 50N mounted or mounted on the self, The management control unit (40, 40 ') is provided in plurality in preparation for the occurrence of a trouble (Trouble),

A plurality of three-state horizontal line buffers 42 and 42 'for determining the horizontal line mounting state of the units 50 and 50N;

A plurality of vertical line buffers 44 and 44 'for determining the vertical line mounting state of the units 50 and 50N;

A plurality of pull-up resistors 20 and 20 'connected to an input side of each of the vertical string buffers 44.44',

It consists of address diodes 46 and 46 'for checking the address of multiple management control units 40 and 40',

The horizontal row buffers 42 and 42 'and the vertical row buffers 44 and 44' of the plurality of management control units 40 and 40 'are connected to each other in the same order by a matrix method.

The address diodes 46 and 46 'are connected to the corresponding addresses of the matrix connection.

Further, in the present invention, in units 50 and 50N in which the state of mounting or dismounting in the self is determined by the management control units 40 and 40 ', the units 50 and 50N are management control units. Blocking diodes (60, 60N) for blocking the high (High) signal applied from the horizontal line buffer (42, 42 ') of the configuration is included.

Hereinafter, with reference to the accompanying FIG. 2, the unit mounting and detachment determination circuit of the self according to the present invention having the above-described configuration will be described in detail.

The Management Function Units (MFUs) 40 and 40 'are designed for working (main) or standby (Standby or redundant) in preparation for a trouble occurring in the currently operating MFU. It may be provided in plurality, and a plurality of spare MFUs may be provided as necessary.

Each management control unit 40, 40 'is configured to determine a row mounting state of the units 50, 50N, thereby enabling an active state that can be operated by applying an active control signal. Alternatively, a plurality of horizontal line buffers 42 and 42 'of a three state buffer are provided which are inoperable and disabled.

The management control unit 40, 40 'operates as a working or standby MFU by the horizontal row buffers 42 and 42' receiving an activation control signal and operating in an activated or deactivated state. .

The horizontal row buffers 42 and 42 'of each of the MFUs 40 and 40' are arranged in a series order, and the horizontal row buffers 42 and 42 'of the MFUs 40 and 40' are arranged in a series order. The same order is connected to each other.

In addition, each of the MFU (40, 40 ') is to determine the column mounting state of the unit (50, 50N), the plurality of vertical buffer (44, 44') is provided in a series order, the vertical line The buffers 44 and 44 'are connected to each other in the same order, and pull-up resistors 20 and 20' are connected to a supply power supply Vcc at input terminals of the vertical buffers 44 and 44 ', respectively.

As described above, a line extended by the plurality of horizontal row buffers 42 and 42 'and the plurality of vertical row buffers 44 and 44' has a matrix structure.

The units 50 and 50N having different functions as self-mounting are connected to the cross section of the matrix via connection terminals, and the disconnecting diodes 60 and 50 to the connection terminals of the units 50 and 50N. 60N) is connected.

In more detail, there are five horizontal row buffers 42 and 42 'for determining the row mounting state of the units 50 and 50N, and vertical row buffers 44 and 44' for determining the column mounting state. The case of eight) will be described as an example.

The MFU A 40 is currently working, and five horizontal row buffers (ROW 1 to ROW 5) (42, 42) that connect the matrix with the extension lines of the first vertical row buffer (COL 1) 44, 44 '. Five units 50 and 50N are connected to the extension line of '), respectively, and this state is shown in FIG.

The unit 50 connected to the ROW 1 line and the COL 1 line of the matrix becomes the unit [1,1], and the unit 50N connected to the ROW 5 line and the COL 1 line becomes the unit [5,1].

In the MFU A 40 of FIG. 2, in order to determine the mounting states of the connected units 50 and 50N based on the COL 1 line, the mounting states are determined one at a time.

In order to determine the mounting state of the units [1, 1], the five horizontal row buffers ROW 1 to ROW 5 42 are set to '0,' from the control unit of the MFU A 40, which is not shown in detail in FIG. The signals of 1, 1, 1, 1 'are applied in order.

A unit [2, 1], a unit [3, 1], a unit [4, 1], which are connected to the lines of ROW 2 to ROW 5 where a high level '1' signal is applied to the horizontal line buffer 42. The units [5, 1] (50N) are treated as Don't Care by the blocking diodes (60N) respectively configured, and a low level '0' signal is applied to the horizontal line buffer (42). In the unit [1, 1] 50 connected to the line of ROW 1 applied, a forward voltage is applied to the blocking diode 60.

In other words, a high voltage is applied to the anode side of the blocking diode 60 by the pull-up resistor 20 of COL 1, and a low level '0' voltage (detailed about 0.6 is applied to the cathode side). V power) is applied, the supply power supply (Vcc) flows through the pull-up resistor 20, the blocking diode 60, the supply power supply (Vcc) to the input terminal of the vertical row buffer 44 connected to COL 1 Since it is not applied, the controller detects a state of '0' and determines that the unit [1, 1] 50 is mounted.

When the unit [1, 1] is in a detached state, the blocking diode 60 is removed, and thus, the supply power supply Vcc is applied to the input terminal of the vertical string buffer 44 connected to COL 1. The control unit detects the state of '1', and determines that the unit [1, 1] (50) is hernia.

In the same manner as above, in order to determine the mounting state of the unit [5, 1] (50N), a signal of '1, 1, 1, 1, 0' is applied to the five horizontal line buffers 42, Units [1,1], Units [2,1], Units [3,1], and Units [4,1] are Don't Care and do not determine the mounting or hernia status. When [5,1] (50N) is mounted, a signal of '0' is transmitted to the COL 1, and when the unit [5,1] (50N) is mounted, a signal of '1' is applied to the COL 1. Will be detected.

According to an embodiment of the above-described method, the mounting or hernia state of a total of 40 units (50, 50N) can be determined by using five horizontal line buffers 42 and 42 'and eight vertical line buffers 44 and 44'. It becomes possible.

The technique of the present invention as described above, the greater the number of units (50, 50N) to be mounted on the (Shelf) shows excellent results, can be applied and used in similar fields.

The address diodes 46 and 46 'of the MFUs 40 and 40' are used to determine the state of mounting or hernia of the MFU in the main system when a main or spare MFU is mounted or when a plurality of MFUs are configured. In the same manner as described above, the respective positions of the matrix are connected to determine an address indication and a mounting state.

According to the present invention having the above configuration, by using a few buffers for the MFU and a diode for the unit, the mounting / detaching state of the multiple units can be easily detected by using a simple circuit.

In addition, the larger the number of units to be mounted, the simpler the discrimination circuit of the MFU becomes, and the industrial and industrial utilization effects of low manufacturing costs are obtained.

Claims (3)

In the management control unit for determining the unit to be mounted or mounted on the shelf, A plurality of three-state horizontal line buffers for determining the horizontal line mounting state of the unit; A plurality of vertical buffers for judging the mounting state of the vertical string of the unit, A plurality of pull-up resistors respectively connected to the input side of each vertical string buffer; Self unit mounting and determining circuit of the self, characterized in that it comprises an address diode for confirming the address of the management control unit, According to claim 1, wherein the management control unit is provided with a plurality, The horizontal line buffer and the vertical line buffer of the plurality of management control units are connected to each other arranged in the same order by a matrix method, The unit diode of the self-mounting determination circuit, characterized in that the address diode is connected to the corresponding address of the matrix connection, According to claim 1, And said unit comprises a blocking diode for blocking a high state signal applied from a horizontal row buffer of a management control unit.