JPH0326022B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention provides a magnetic card that is installed between a power supply end (for example, a wall outlet) and an electrical device (for example, an office computer, etc.). The present invention relates to a power management device that can connect and disconnect power supply circuits depending on use.

[Conventional technology]

2. Description of the Related Art Electrical equipment, particularly information electronic equipment such as computers and registers, and electronic management equipment are often only permitted to be used by specific operators. If the electronic device is in a situation where it can be used by an unspecified number of people, the information may be misused, tampered with, or
Alternatively, there is a possibility that unauthorized manipulation of the entry/exit ledger may be easily carried out, and in recent years, unique management has been required for these important electrical devices. In many conventional management methods, for example, the power switch was in the form of a lock so that it would not turn on unless a specific key was present, and in this case, only the owner of the specific key was allowed to use the electronic device. Ta. However, it is cumbersome to have to have the key at all times, and the key can be easily duplicated, making it difficult to strike a balance between fraud prevention and convenience of use.

In view of the above-mentioned drawbacks, the present invention provides a power management device that allows the power supply line to be disconnected or disconnected using a magnetic card, and that prevents unauthorized use of electrical equipment without changing or modifying its configuration. The purpose is to provide.

[Means to solve the problem]

In order to achieve the above object, the power management device of the present invention includes a three-dimensional main body, a plug protruding from the main body and detachable from the power supply end, and a surface different from the plug protruding surface of the main body. A recess is formed in the main body, and a socket for connecting a power plug for electrical equipment is provided in the center of the recess, and a socket is rotatably provided in the opening surface of the recess of the main body to connect the power plug from the power plug. a lockable fixed door for fixing a power cord that leads power to the device; and a lockable fixed door provided inside the main body,
a power supply control unit capable of connecting or disconnecting a power line between the plug and the socket according to an applied activation signal; and a magnetic card inserted through a card slot provided inside the main body and opened on the outer peripheral surface of the main body. A magnetic reader is provided inside the main body to read the magnetic information of the card, and the information from the magnetic reader is compared with preset information, and when the conditions match, an activation signal is generated. and a determination section that supplies power to the power control section.

[Effect]

Since the present invention has the above-described configuration, power can be supplied to electrical equipment only when the information on the magnetic card inserted into the card slot of the main unit matches the preset information and conditions. It's like this. In addition, in order to manage the power supply without modifying the electrical equipment, the present invention forms a recess in the main body, arranges a socket in the center of the recess, and connects the power plug for the electrical equipment to the socket. By locking a fixed door rotatably provided on the opening surface of the concave portion of the main body, a power cord that leads power to the electrical equipment is fixed.

〔Example〕

Hereinafter, the present invention will be explained with reference to the illustrated embodiments.

First, FIG. 1 shows an example of actual use of this embodiment, in which 1 is a central processing unit, 2 is a printing device, and the central processing unit 1 and the printing device 2 are connected to each other via a cable 3. They are connected in such a way that transmission of information is possible. A power plug is connected to the end of the power cord 4 of this printing device 2 in the same way as in ordinary electrical products, but this power plug is connected to the main body 5, which is a power management device, so that it cannot be pulled out. The main body 5 can be detachably connected to a commercial power socket 6 fixed to the lower part of the wall. Therefore, the central processing unit 1 and the printing device 2 are electrically connected to the socket 6 via the main body 5, and the electrical connection between the power cord 4 and the socket 6 is established by connecting the magnetic card 7 storing specific information to the main body. This is done by inserting it into 5.

FIGS. 2 and 3 show the structure of the aforementioned main body 5 in detail. A large rectangular recess 8 is formed in the center of the side surface of the main body 5.
A socket 9 is fixed in the center of the inside. Furthermore, a fixed door 10 is mounted on a hinge 11 on the opening side of the recess 8.
A U-shaped insertion groove 12 is formed in the center of the lower side of the fixed door 10, and a lock 13 is fixed close to the side edge of the fixed door 10. At the same time, an engagement groove 14 is formed on the inner circumferential wall of the recess 8.
is formed. A power plug 15 for electrical equipment such as the central processing unit 1 and the printing device 2 is fixed to the terminal end of the power cord 4. This power plug 15 is inserted into the socket 9, the power cord 4 is interposed in the insertion groove 12, the fixed door 10 is fitted into the opening of the recess 8 and closed, and the lock 13 is engaged with the engagement groove 14. Lock and power cord 4
are connected so as not to slip out from the main body 5. A card slot 16 for inserting a magnetic card 7 is opened on the top surface of the main body 5, and a magnetic reader (magnetic head) that comes into contact with a magnetic stripe 17 attached to the magnetic card 7 is inside this card slot 16. It is built-in. A lamp 18 is fixed on the top surface of the main body 5 to display its operating status.

FIG. 3 shows the main body 5 viewed from the opposite direction from FIG. 2. A plug 19 with a pair of protruding metal pieces is fixed at the center of the side opposite to where the socket 9 is located. 19 is inserted into the socket 6 at the power supply end described above.

FIG. 4 shows the electrical system housed inside the main body 5 of this embodiment. An extraction circuit 22 is connected to a magnetic reader 20 that reads the magnetic stripe 17 of the magnetic card 7 via an input buffer 21. It has been done.
A comparison circuit 23 is connected to the extraction circuit 22.
Also connected to the comparison circuit 23 is a password storage circuit 24 in which a preset password is stored.
The input buffer 21, extraction circuit 22, comparison circuit 23, and password storage circuit 24 constitute a determination section. The output of the comparator circuit 23 is connected to a control circuit 25 so that the operating signal generated by the comparator circuit 23 is supplied to the control circuit 25. A relay circuit 26 is connected to the output of the control circuit 25, and by energizing the excitation coil of the relay circuit 26, the relay contacts can be opened and closed. By opening and closing the relay contacts of the relay circuit 26, the power line between the socket 9 and the plug 19 can be connected or disconnected.

Next, the operation of this embodiment will be explained.

By inserting the power plug 15 connected to the end of the power cord 4 into the socket 9, and closing and locking the fixed door 10, the power plug 15 cannot be pulled out from the main body 5, and power is supplied to the printing device 2 from this main body. It will be managed by 5. When the plug 19 fixed to one side of the main body 5 is inserted into the socket 6 which is the output end of the commercial AC, it is activated, but as it is, the relay circuit 26 is open and the plug 19 and the socket 9 are not connected. Therefore, power is not supplied to the printing device 2 and the central processing unit 1.

Here, when the magnetic card 7 is inserted into the card slot 16, the magnetic reader 20 housed in the main body 5 reads what is recorded on the magnetic stripe 17 and transmits it to the input buffer 21, and the input buffer 21 is directly transferred to the extraction circuit 22. to communicate. This extraction circuit 22 extracts a password from among various information recorded on the magnetic stripe 17 (for example, owner code, department code, date of issue, etc.) that gives permission to use this computer device. extract the number,
This password is transmitted to the comparison circuit 23. The comparison circuit 23 compares the password read from the extraction circuit 22 with the password from the password storage circuit 24, and when the two match, transmits the judgment result to the control circuit 25 as an activation signal. This closes the relay circuit 26 and connects the power line directly.

As a result, socket 9 and plug 19 are electrically connected directly, and the commercial current from socket 6 is transferred to plug 1.
9, relay circuit 26, socket 9, power plug 1
5. Power is supplied to the central processing unit 1 and printing device 2 via the power cord 4, and this computer device starts its operation. Note that when this relay circuit 26 is closed, the lamp 18 lights up to indicate that it is in operation.

Furthermore, when the working time is over or when the designated operator leaves his or her post, the magnetic card 7 is removed from the main body 5 to collect it, thereby closing the relay circuit 26. socket 9
The connection between the plug 19 and the plug 19 will be cut off.
Power is no longer supplied to the central processing unit 1 and the printing device 2.

〔Effect of the invention〕

Since the present invention is configured as described above, it is possible to manage the power supply of electrical equipment using a magnetic card without using a metal key, and moreover, the present invention has a simple configuration that only requires fixing the end of the power cord. Therefore, it can be used as is in various types of equipment without requiring any design changes or modifications to the electrical equipment.
The range of applications can be expanded.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing the usage situation of one embodiment of the present invention, Fig. 2 is a perspective view of the embodiment seen from the back,
FIG. 3 is a perspective view of the same as seen from the front, and FIG. 4 is a block diagram showing the configuration of the electrical system of the same. 5...Body, 6...Socket, 7...Magnetic card, 9...Socket, 15...Power plug, 17
...Magnetic stripe, 19...Plug.

Claims (1)

[Claims] 1. A three-dimensional main body, a plug protruding from the main body and detachable from the power supply end, and a recess formed on a surface different from the plug protruding surface of the main body, and a recess formed in the recess. A socket for connecting a power plug for an electrical device is arranged in the center of the interior, and a power cord is rotatably provided on the opening surface of the recess of the main body and fixes a power cord that leads power from the power plug to the electrical device. a lockable fixed door provided inside the main body and capable of connecting or disconnecting a power line between the plug and the socket in response to an applied activation signal; a magnetic reader provided inside the main body to read magnetic information of a magnetic card inserted through a card slot opened on the outer peripheral surface of the main body; and a magnetic reader provided inside the main body to read information from the magnetic reader and preset information. 1. A power supply control device comprising: a determination section which forms an activation signal and supplies it to the power supply control section when conditions match after comparing and determining.