JP2004334549A - Measuring system and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a measuring system which can be easily operated, has high security, and in which erroneous operation is reduced, and a measuring method. <P>SOLUTION: This measuring system having a measuring unit for performing measurement according to an operation instruction transmitted from a controller through a network is improved. The controller of this system is provided with an operating part to which an operation instruction and a password are inputted, a password generating part for generating a password when an operation instruction is inputted to the operating part and a deciding part for transmitting the operation instruction to the measuring unit when the password inputted to the operating part is made coincident with the password from the password generating part. The measuring unit is provided with a display part for inputting the password from the password generating part, and for displaying the inputted password as the password to be inputted to the operating part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a measurement system and a measurement method having a measurement device that performs measurement in accordance with an operation command transmitted from a control device via a network, and more particularly, to a measurement system and a measurement method that are simple in operation, have high security, and have few erroneous operations. Things.
[0002]
[Prior art]
In recent years, with the spread of networks such as Ethernet (registered trademark), measuring instruments such as paperless recorders and oscilloscopes have been connected to networks such as LAN (local area Network) and the Internet. These measuring instruments measure according to an operation command transmitted from a control device (for example, a computer) via a network (for example, see Patent Document 1). This operation command (for example, setting of a measuring instrument, start of measurement, data collection, etc.) is input by a user to a computer via an operation unit such as a keyboard and a mouse. In general, software that allows an operator to easily input an operation command is distributed from a measuring instrument manufacturer, so that a user can easily operate the measuring instrument via a network.
[0003]
In addition, convenience is increasing, such as one user operating a plurality of measuring instruments from one computer, and a plurality of users operating the same measuring instrument from each computer.
[0004]
As described above, a plurality of measuring instruments are connected to the network, and a plurality of users operate the measuring instruments. Therefore, an operation command is erroneously transmitted to a measuring instrument different from a desired measuring instrument, resulting in an erroneous operation. In addition, there have been problems such as that a plurality of persons operate the same measuring device at the same time and cannot perform a desired measurement. Further, there is a security problem that the measuring instrument is illegally operated by a malicious third party.
[0005]
Therefore, in recent years, a measurement system that performs an operation after transmitting a user ID and a password that are identification information, a measurement system that receives an operation from a computer only when a switch is provided on a measuring instrument, and the switch is turned on, and the like are used. Erroneous operation of the measuring instrument and security are ensured (for example, see Patent Document 2).
[0006]
[Patent Document 1]
JP 2001-056896 A (paragraphs 0002 to 0007, FIG. 7)
[Patent Document 2]
JP-A-2002-156433 (Paragraph Nos. 0041 to 0042, FIG. 4)
[0007]
[Problems to be solved by the invention]
However, the management using the user ID and the password requires the measuring instrument to store the user ID and the password and make the judgment. The provision of the memory and the means for making the judgment increases the size and cost of the measuring instrument. In addition, it is necessary to add a user ID and a password every time the number of users increases, and to delete a user ID and a password of a user who is no longer used. there were.
[0008]
Further, the management by the switch requires the provision of the switch, which increases the size and cost of the measuring instrument. Also, every time the user operates the measuring instrument, the user needs to turn on the measuring instrument, input an operation command from the operation unit of the computer, and turn off the measuring instrument. It was messy.
[0009]
Therefore, an object of the present invention is to realize a measurement system and a measurement method which are simple in operation, have high security, and have few erroneous operations.
[0010]
[Section for solving the problem]
The invention according to claim 1 is
In a measurement system having a measurement device that performs measurement according to an operation command transmitted from a control device via a network,
The control device includes:
An operation unit into which the operation command and the password are input;
A password generation unit that generates a password when an operation command is input to the operation unit;
A determination unit that transmits the operation command to the measuring device when a password input to the operation unit matches a password from the password generation unit,
The measuring instrument is characterized in that a display unit is provided for inputting a password from the password generation unit and displaying the input password as a password input to the operation unit.
[0011]
The invention according to claim 2 is the invention according to claim 1,
The determination unit makes a determination within the validity period of the password of the password generation unit.
[0012]
The invention according to claim 3 is the invention according to claim 2,
The display unit displays the password from the password generation unit at least up to the validity period.
[0013]
The invention according to claim 4 is the invention according to any one of claims 1 to 3,
The password generation unit generates a password for each operation command from the operation unit.
[0014]
The invention according to claim 5 is the invention according to any one of claims 1 to 4,
The control device is characterized in that at least one of a password input to the operation unit and a password from a password generation unit is converted according to a predetermined rule, and a conversion unit is provided for outputting to the determination unit.
[0015]
The invention according to claim 6 is the invention according to claim 5,
The conversion unit performs conversion according to the type of operation command input to the operation unit.
[0016]
The invention according to claim 7 is the invention according to any one of claims 1 to 6,
The control device includes a timing adjustment unit that adjusts the timing of transmitting the password generated by the password generation unit to the measuring device.
[0017]
The invention according to claim 8 is the invention according to any one of claims 1 to 7,
The control device has a history holding unit that holds the history of the transmission command transmitted by the measuring device, the determination unit,
The password generation unit generates a password based on the history stored in the history storage unit 25.
[0018]
The invention according to claim 9 is the invention according to any one of claims 1 to 8,
The display unit does not display a password from the control device or a different control device during execution of the operation command from the control device.
[0019]
The invention according to claim 10 is
In a measuring method in which a measuring instrument measures according to an operation command transmitted from a control device via a network,
A procedure in which an operation command is input to the control device;
A procedure for generating a password when the operation command is input;
Displaying the generated password on a display unit of the measuring instrument;
A password is input to the control device;
A step of transmitting the operation command to the measuring instrument when the input password matches the generated password.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
FIG. 1 is a configuration diagram showing a first embodiment of the present invention. In FIG. 1, a network 100 is, for example, Ethernet (registered trademark) and is connected to the Internet, a LAN (local area Network), or the like.
[0021]
The measuring device 10 is, for example, a paperless recorder, an oscilloscope, or the like, is connected to the network 100, and has a display unit 11. The display unit 11 is, for example, a liquid crystal or a plurality of LEDs, and displays characters, numbers, and the like.
[0022]
The computer 20 is a control device, is connected to the network 100, and operates by transmitting an operation command to the measuring instrument 10. Further, the computer 20 includes an operation unit 21, a password generation unit 22, and a determination unit 23. The operation unit 21 is, for example, a keyboard or a mouse, and receives an operation command and a password. The password generation unit 22 generates a password every time an operation command is input to the operation unit 21. The determination unit 23 determines whether the password input to the operation unit 21 matches the password from the password generation unit 22, and when the password matches, the operation command input to the operation unit 21 is transmitted to the measuring device 10 via the network 100. Send to
[0023]
The operation of such a device will be described.
FIG. 2 is a diagram illustrating the operation of the system shown in FIG.
The user inputs an operation command (for example, setting of a measuring instrument, start of measurement, data collection, etc.) to the operation unit 21 (SQ1). When an operation command is input to the operation unit 21, the password generation unit 22 randomly generates a password (for example, ABC) combining numbers and characters, outputs the password to the determination unit 23 (SQ2), and outputs the password " A display command to display “ABC” is transmitted to the measuring device 10 (SQ3).
[0024]
Then, the measuring device 10 displays the password “ABC” on the display device 21 in accordance with the display command from the computer 20 (SQ4). Further, the user visually confirms the password “ABC” displayed on the display unit 21 and inputs the password “ABC” to the operation unit 21 (SQ5).
[0025]
It is determined whether the password “ABC” input to the operation unit 21 matches the password “ABC” from the password generation unit 22. At this time, the determination unit 23 may determine only when the password “ABC” is input from the operation unit 21 within the validity period of the password “ABC” from the password generation unit 22. The validity period is a period after the password “ABC” is input from the password generation unit 22 in SQ2, and varies depending on the situation and environment of the measuring instrument 10, but is at least required for the user to input the password “ABC”. It is good to set the necessary time. For example, when the measuring instrument 10 and the computer 20 are installed adjacent to each other, it may be about one minute. When the measuring instrument 10 and the computer 20 are installed separately, the user moves, visually checks the display unit 11, returns, and returns the password. It may be a time required to input "ABC" (SQ6).
[0026]
Then, if they match, the determination unit 23 transmits the operation command input to the operation unit 21 to the measuring device 10 (SQ7). As a result, the measuring instrument 10 operates according to the operation command. Of course, if they do not match, the determination unit 23 does not transmit the operation command to the measuring device 10.
[0027]
As described above, when the operation command is input to the operation unit 21, the password generation unit 22 generates the password “ABC” and causes the display unit 11 of the measuring instrument 10 to display the password “ABC”. Then, when the password “ABC” from the password generation unit 22 matches the password “ABC” from the operation unit 21, the determination unit 23 transmits an operation command to the measuring device 10. And it is not necessary to provide a switch on the measuring instrument 10. As a result, simple operation provides high security and reduces erroneous operations. Furthermore, there is no need to provide a switch or a memory in the measuring instrument 10, so that downsizing and cost reduction can be achieved.
[0028]
That is, since the password “ABC” is input after the display unit 11 of the measuring instrument 10 to be operated is visually checked, it is possible to prevent the measuring instrument 10 from being mistakenly operated by mistake or a malicious third party to perform an illegal operation. .
[0029]
Further, since the determination unit 23 checks whether the passwords “ABC” match within the validity period, security can be enhanced. For example, this is effective when the user inputs an operation command to the operation unit 21 and then leaves the front of the operation unit 21.
[0030]
[Second embodiment]
FIG. 3 is a configuration diagram showing a second embodiment of the present invention. Here, the same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. 3, a conversion unit 24 is newly provided between the password generation unit 22 and the determination unit 23. The conversion unit 24 converts the password generated by the password generation unit 22 according to a predetermined rule, and outputs the converted password to the determination unit 23. Note that the predetermined rule is, for example, that the alphabet is the next alphabet in alphabetical order ("BCD" for "ABC", "YZA" for "XYZ"), and 1 (for numbers) "135" is converted to "246", and "789" is converted to "890").
[0031]
The operation of such a device will be described.
The operation of such a device is substantially the same as that of the device shown in FIG. 1 except that the conversion unit 24 converts the password “ABC” from the password generation unit 22 according to a predetermined rule, and converts the converted password. “BCD” is output to the determination unit 23. Of course, the display unit 11 displays the unconverted password “ABC” from the password generation unit 22.
[0032]
Then, the user visually checks the password “ABC” displayed on the display unit 11 and inputs the password “BCD” from the operation unit 21. Thus, the determination unit 23 determines whether the password “BCD” input to the operation unit 21 matches the converted password “BCD” from the conversion unit 24.
[0033]
As described above, the conversion unit 24 converts the password “ABC” into “BCD”, and the determination unit 23 determines whether the converted password “BCD” matches the password “BCD” from the operation unit 21. Only a user who knows the rules of this conversion can operate the measuring instrument 10. As a result, security can be enhanced.
[0034]
[Third embodiment]
FIG. 4 is a configuration diagram showing a third embodiment of the present invention. Here, the same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 4, a history holding unit 25 is newly provided in the computer 20. The history storage unit 25 stores the history of the operation command transmitted from the determination unit 23 to the measuring device 10. Further, a password generator 26 is provided instead of the password generator 22. When an operation command is input to the operation unit 21, the password generation unit 26 generates a password based on the history stored in the history storage unit 25.
[0035]
The operation of such a device will be described.
Such a device is substantially the same as the operation of the device shown in FIG. 1, but a different operation is that the password generation unit 26 is held in the history holding unit 25 when an operation command is input to the operation unit 21. The history is read, and it is confirmed how many times the operation command input to the operation unit 21 has been executed so far. For example, in the case of an operation command that causes the user to set the date and time when the use of the measuring device 10 has been started, the password generation unit 26 does not generate a password if the operation command has been executed even once. Other operation commands generate the password "ABC" as in the device shown in FIG. On the other hand, the history storage unit 25 monitors the transmission command transmitted from the determination unit 23 to the measuring device 10 and stores the history.
[0036]
As described above, when an operation command is input to the operation unit 21, the password generation unit 26 generates a password based on the history stored in the history storage unit 25, so that the number of times that the operation command can be executed is limited. Can be. Thus, it is possible to prevent a change in the setting of the measuring instrument 10 and to increase the reliability of the information set in the measuring instrument 10.
[0037]
The present invention is not limited to this, and may be as follows.
(1) In the apparatus shown in FIGS. 1, 3 and 4, a configuration is shown in which one measuring instrument 10 is connected to the network 100. However, any number of measuring instruments 10 may be connected, and May be controlled and operated. Also, any number of computers 20 may be connected to the network 100, and the measuring instrument 10 may be controlled and operated in a shared manner.
[0038]
(2) In the devices shown in FIGS. 1, 3, and 4, the configuration is described in which the determination unit 23 determines whether the passwords match within the validity period. However, the validity period may not be provided.
[0039]
(3) In the apparatus shown in FIGS. 1, 3, and 4, the period during which the display unit 10 displays the password "ABC" may be at most the valid period of the password "ABC". Although it depends on the situation and environment of the measuring instrument 10, it is preferable that the time is at least a minimum necessary for the user to view the password "ABC". For example,
(A) When the measuring instrument 10 and the computer 20 are adjacent to each other, the display period may be set to about 10 seconds and the valid period may be set to about 1 minute.
(B) When the measuring instrument 10 and the computer 20 are in different rooms or buildings, the display period is set to the moving time until the user moves and the display unit 11 is visually checked, and the valid period is moved by the user to display the display unit. The time may be the sum of the round-trip time required to visually confirm 11 and return, and the time required to enter the password.
(C) When operating a plurality of measuring instruments 10 installed in a factory at a time, the display period is set to the time required to make a round of the plurality of measuring instruments 10 installed in the factory, and the valid period is set to make a full cycle around the factory. And the time required to enter the password.
As described above, since the display period of the display unit 10 is set to be equal to or less than the valid period of the password, the password is not displayed at an unnecessary time, and the security can be enhanced. For example, this is effective when the user inputs an operation command to the operation unit 21 and then leaves the front of the operation unit 21. The display period is set in advance by the user from the operation unit 21 or the operation unit (not shown) of the measuring instrument 10.
[0040]
In the cases (b) and (c), the password generated by the password generation units 22 and 26 may be transmitted to the computer 20 because the third party may view the password before the user arrives at the measuring instrument 10. It is preferable to provide a timing adjusting unit for adjusting the timing of transmitting “ABC” to the measuring device 10, and the timing adjusting unit may transmit the passwords of the password generating units 22 and 26 to the measuring device 10 at desired times. For example, one minute before the scheduled time at which the user arrives at the measuring device 10, the timing adjustment unit transmits the password “ABC” from the password generation units 22 and 26, and the display unit 11 displays the password for two minutes before and after the scheduled time. Should be displayed. As described above, since the timing adjustment unit adjusts the timing at which the password “ABC” is displayed, it is possible to enhance security without displaying the password “ABC” at an unnecessary time.
[0041]
(4) In the devices shown in FIGS. 1, 3, and 4, the password generation units 22 and 26 are configured to generate a password for each operation command from the operation unit 21. When inputting continuously, during the validity period of the password by the first operation command, the password generation units 22 and 26 do not generate a password, and the determination unit 23 transmits the continuously input operation command to the measuring device 10. It may be.
[0042]
(5) In the apparatus shown in FIGS. 1, 3 and 4, the display unit 10 inputs the password "ABC" from the computer 20 and displays the input password "ABC" as the password input to the computer 20. Although the configuration is shown, when a password is transmitted from a plurality of computers 20, when an operation command from the computer 20 is currently being executed, even if a password "ABC" from this computer 20 or a different computer is input, The display unit does not have to display the input password “ABC”.
[0043]
As described above, when the measuring instrument 10 is executing the operation command from the computer 20, even if the password "ABC" is input from the computer 20 or a different computer, the display unit 11 displays the input password "ABC". Since the display is not displayed, the operation command being executed is not interrupted or changed even when operated by a plurality of computers 20. This reduces erroneous operations.
[0044]
(6) In the apparatus shown in FIG. 3, the conversion unit 24 converts the password “ABC” from the password generation unit 24 into the password “BCD” and outputs it to the determination unit. The conversion may be performed according to the type of the operation command input to the unit 21. For example, the conversion unit 24 may change the password “ABC” only for an operation command for changing the initial setting of the measuring instrument 10 or an important operation command.
[0045]
(7) In the apparatus shown in FIG. 3, the conversion unit 24 converts the password “ABC” from the password generation unit 24 into the password “BCD” and outputs it to the determination unit. It may be provided between the unit 21 and the determination unit 23. In this case, when the password “ABC” on the display unit 11 is displayed, the user inputs the password “ZAB” to the operation unit 21. Then, the conversion unit 24 converts the password “ZAB” from the operation unit 21 into the password “ABC” and outputs it to the determination unit 23.
[0046]
【The invention's effect】
According to the present invention, the following effects can be obtained.
According to the first to ninth aspects, the password generation unit generates a password when an operation command is input to the operation unit, and causes the display unit of the measuring instrument to display the password. When the password from the password generation unit and the password from the operation unit match, the determination unit sends an operation command to the measurement device, so that the user ID and password can be confirmed by the measurement device, and the switch can be set to the measurement device. There is no need to provide. As a result, simple operation provides high security and reduces erroneous operations. Further, there is no need to provide a switch or a memory in the measuring instrument, so that downsizing and cost reduction can be achieved.
[0047]
According to the second aspect, the determining unit checks whether the passwords match within the valid period, so that the security can be enhanced.
[0048]
According to the third aspect, since the display unit sets the display period to at least the validity period of the password, the security can be enhanced without displaying the password at an unnecessary time.
[0049]
According to the fifth and sixth aspects, the conversion unit converts the password, and the determination unit determines whether the converted password matches the password from the operation unit. Can be operated. As a result, security can be enhanced.
[0050]
According to the seventh aspect, since the timing adjusting section adjusts the timing of displaying the password, the security can be enhanced without displaying the password at an unnecessary time.
[0051]
According to the eighth aspect, when an operation command is input to the operation unit, the password generation unit generates a password based on the history stored in the history storage unit, so that the number of times the operation command can be executed is limited. Can be. Thus, it is possible to prevent a change in the setting of the measuring instrument, and it is possible to increase the reliability of information set in the measuring instrument.
[0052]
According to the ninth aspect, when the measuring instrument is executing an operation command from the control device, even if the password is input from the control device or a different control device, the input password is not displayed on the display unit. Even if operated by a plurality of control devices, the operation command being executed is not interrupted or changed. This reduces erroneous operations.
[0053]
According to the tenth aspect, when an operation command is input, a password is generated, and the password is displayed on the display unit of the measuring instrument. When the generated password matches the password entered after the display, the determining unit transmits an operation command to the measuring instrument, so that the user ID and the password need to be confirmed by the measuring instrument, and a switch must be provided on the measuring instrument. There is no. As a result, simple operation provides high security and reduces erroneous operations. Further, there is no need to provide a switch or a memory in the measuring instrument, so that downsizing and cost reduction can be achieved.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing a first embodiment of the present invention.
FIG. 2 is a diagram showing an example of the operation of the device shown in FIG.
FIG. 3 is a configuration diagram showing a second embodiment of the present invention.
FIG. 4 is a configuration diagram showing a third embodiment of the present invention.
[Explanation of symbols]
Reference Signs List 10 measuring instrument 11 display unit 20 computer 21 operation unit 22, 26 password generation unit 23 determination unit 24 conversion unit 25 history storage unit

Claims (10)

In a measurement system having a measurement device that performs measurement according to an operation command transmitted from a control device via a network,
The control device includes:
An operation unit into which the operation command and the password are input;
A password generation unit that generates a password when an operation command is input to the operation unit;
A determination unit that transmits the operation command to the measuring device when a password input to the operation unit matches a password from the password generation unit,
The measurement system further comprises a display unit for inputting a password from the password generation unit and displaying the input password as a password input to the operation unit. The measurement system according to claim 1, wherein the determination unit determines within a validity period of the password of the password generation unit. The measurement system according to claim 2, wherein the display unit displays the password from the password generation unit at least until the validity period. The measurement system according to claim 1, wherein the password generation unit generates a password for each operation command from the operation unit. The control device further includes a conversion unit that converts at least one of a password input to the operation unit or a password from a password generation unit according to a predetermined rule and outputs the converted result to the determination unit. 5. The measurement system according to any one of 4. The measurement system according to claim 5, wherein the conversion unit performs conversion according to a type of an operation command input to the operation unit. The measurement system according to any one of claims 1 to 6, wherein the control device includes a timing adjustment unit that adjusts a timing at which the password generated by the password generation unit is transmitted to the measuring device. The control device has a history holding unit that holds the history of the transmission command transmitted by the measuring device, the determination unit,
The measurement system according to claim 1, wherein the password generation unit generates a password based on the history stored in the history storage unit 25. 9. The measurement system according to claim 1, wherein the display unit does not display a password from the control device or a different control device while executing an operation command from the control device. In a measuring method in which a measuring instrument measures according to an operation command transmitted from a control device via a network,
A procedure in which an operation command is input to the control device;
A procedure for generating a password when the operation command is input;
Displaying the generated password on a display unit of the measuring instrument;
A password is input to the control device;
Transmitting the operation command to the measuring instrument when the input password matches the generated password.

Images