JP2023103916A - measuring instrument - Google Patents

Abstract

To provide a measuring instrument capable of accurately recording measurer (user) information.SOLUTION: A small measuring instrument which a user carries by hand or performs measurement operations includes: a user information registration section in which information on one or more users who perform measurement operations using the measuring instrument is set and registered; user identification means for identifying a user who currently performs a measurement operation using the measuring instrument from among the users registered in the user information registration section; and a measurement recording section that records together the user information identified by the user identification means and a measured value by the measuring instrument. The measuring instrument further includes an inertial sensor provided to move integrally with the measuring instrument. The user identification means includes dynamic user identification means for identifying the user based on a pattern of movement of the measuring instrument that varies from user to user when the user moves with the measuring instrument.SELECTED DRAWING: Figure 3

Description

The present invention relates to measuring instruments. More particularly, it relates to meters with user identification.

In recent years, the traceability of measurement data has come to be emphasized, so in addition to recording the measurement values themselves when measuring (inspecting) a workpiece with a measuring instrument, it is also possible to identify when, by whom, and with which measuring instrument the measurement was made. It is becoming necessary to manage whether or not it is obtained by measurement.

JP 2020-57881

Although there are cases where measured values are recorded by writing them down on paper, leaving such handwritten records is a considerable amount of time and effort, and there is also the risk of omissions and errors in recording. In this respect, with a digital measuring instrument, it is easy to record the date and time (clock built into the measuring instrument) and the measuring instrument (measuring instrument ID) when recording digital (electronic data) measured values.

As for the measurer (who), the measurer information can be input (for example, selected from candidates) using a button (switch) or a touch panel when using the measuring device.
However, since it is possible that an error is made unintentionally when inputting the measurer information, the reliability of the traceability of the measurer information is lowered.
Alternatively, it is not possible to dispel the concern that the measurement person will be impersonated or the inspection data (measurement data) will be falsified or counterfeited intentionally with malicious intent such as quality fraud or inspection fraud.
Ultimately, it is unclear whether measurement data from measuring instruments that have no countermeasures against such fraud can be trusted, and ultimately the safety of the final product is also ultimately unknown. The problem remains.

Therefore, there is a demand for a measuring instrument that can accurately record the information of the measurer (user) while being operated as simply as possible.

The measuring instrument of the present invention is
A small-sized measuring instrument having a stationary body and a measuring element supported by the stationary body for detecting the surface of an object to be measured, and is manually held and moved by a user or used for measurement operation, ,
a user information registration unit in which information of one or more users who perform measurement operations using the measuring instrument is set and registered;
user identification means for identifying a user who is actually performing a measurement operation using the measuring instrument from among the users registered in the user information registration unit;
A measurement recording unit for recording together the user information identified by the user identification means and the measured value by the measuring device.

In one embodiment of the invention,
Furthermore, having an inertial sensor provided to move integrally with the measuring instrument,
The user identification means is
Preferably, there is provided dynamic user identification means for identifying the user based on the pattern of movement of the meter, which varies from user to user, when the user moves with the meter.

In one embodiment of the invention,
In the user information registration unit,
It is preferable that one or more movement patterns of the measuring device selected from the motions from the time when the user picks up the measuring device until the measurement value is obtained with the measuring device are registered for each user.

In one embodiment of the invention,
In the user information registration unit,
It is preferable that the movement pattern of the measuring device according to the movement determined for each user as the movement for user identification is registered for each user.

In one embodiment of the invention,
Preferably, the dynamic user identification means records the movement pattern used for user identification as log data.

In one embodiment of the invention,
The user information registration unit further includes personal ID number, password, fingerprint pattern, vein image pattern, voice pattern, iris image pattern, retina image pattern, and face as information for identifying and authenticating an individual other than the movement pattern. One or more pieces of information selected from image patterns are registered as static personal identification information,
Preferably, the user identification means further includes static user identification means for identifying a user based on the static personal identification information.

In one embodiment of the invention,
The measurement recording unit stores, together with the record of the measured value, a dynamic information authentication user identified and authenticated by the dynamic user identification means and a static information authentication user identified and authenticated by the static user identification means. It is preferable to record the user and .

In one embodiment of the invention,
If the dynamic information authentication user identified and authenticated by the dynamic user identification means and the static information authentication user identified and authenticated by the static user identification means do not match, use that fact. It is preferable to notify the

In one embodiment of the invention,
When the dynamic information authentication user identified and authenticated by the dynamic user identification means and the static information authentication user identified and authenticated by the static user identification means do not match,
The measurement recording unit stores a measured value, a static information authentication user, a dynamic information authentication user, and a flag indicating that the static information authentication user and the dynamic information authentication user do not match. Recording is preferred.

1 is a conceptual functional configuration diagram of a measuring instrument according to a first embodiment of the present invention; FIG. FIG. 4 is a diagram illustrating a 6-axis inertial sensor; 3 is a functional block diagram of a control circuit unit; FIG. It is the figure which illustrated the registration information registered into a user information registration part. FIG. 7 is a functional block diagram of a control circuit of the measuring instrument according to the second embodiment; FIG. 10 is a diagram illustrating registration information registered in a user information registration unit in the second embodiment;

An embodiment of the present invention will be illustrated and described with reference to the reference numerals attached to each element in the drawings.
(First embodiment)
FIG. 1 is a conceptual functional configuration diagram of a measuring instrument according to the first embodiment of the present invention.
The main subject of the present invention is a portable small measuring instrument (small tool) 100 that can be held and moved by a user.
As a small measuring instrument 100 that can be held by a user's hand or installed on a simple stand to easily measure the surface texture, contour shape, and dimensions (e.g., height and width) of an object to be measured,
for example,
Dial gauges, lever dial gauges (this type of measuring instrument is also called indicators, test indicators, digital indicators, digital test indicators, linear gauges, height gauges, etc.), caliper gauges, vernier calipers, micrometers, cylinder gauge, bore gauge,
and so on.

These small measuring instruments 100 are
a fixed body part (for example, a case body, a main scale, etc.) 110;
and a probe (spindle or stylus) 120 having a contact that contacts the object to be measured.
A probe (spindle or stylus) 120 is provided on a fixed body (for example, a case body or a main scale) 110 so as to move toward and away from the surface of the object to be measured. Obtain a measurement of the object.
As the displacement (position) sensor 130 that detects the displacement of the stylus 120, for example, there is a so-called encoder (linear encoder, rotary encoder).

Furthermore, just to make sure, for example, a portable surface texture measuring device (roughness measuring device) is also included in the portable small measuring device (small tool) 100 . A portable surface texture measuring instrument (roughness measuring instrument) 100 has a stylus at the tip of a swingable arm, and further has a drive mechanism for advancing and retreating the arm in a uniaxial direction. A compact measuring instrument (surface roughness measuring instrument) 100 detects the amount of movement of the arm and the swinging displacement of the arm by a displacement sensor 130, respectively, and thereby measures the surface roughness of the surface of the object to be measured along one direction. .

In addition, not only the contact-type measuring device 100 but also a measuring device 100 such as a portable laser scanner is included in the portable small-sized measuring device 100 (small tool). (Consider the laser light emitting/receiving unit (laser light source, light receiving element array) as the probe 120.)

An inertial sensor 200 is attached to the small measuring instrument 100 .
The inertial sensor 200 itself is known, and as illustrated in FIG. 2, for example, a 6-axis inertial sensor (3-axis gyro sensor + 3-axis acceleration sensor) 200 integrated on one chip is known. there is
A 6-axis inertial sensor is desirable in order to increase the accuracy of motion detection and user identification, which will be described later. An inertial sensor that is only a sensor may be used. The inertial sensor 200 may be mounted and assembled together with other electronic components in the housing of the measuring instrument 100 . Alternatively, the inertial sensor 200 may be attached and detached (attached or inserted into a slot) later as an attached option of the measuring instrument 100 .
Here, it is assumed that the inertial sensor is attached to the case body (fixed body section 110) side of the measuring instrument 100. FIG. Note that it is not excluded to attach the inertial sensor 200 to the stylus 120 which is assumed to be displaced during the measurement work.

The control circuit 150 will be described with reference to FIG.
The control circuit 150 is mounted and assembled in the measuring instrument 100 together with other electronic components. Note that the measurement data (measured values and detection values of the inertial sensor 200) of the measuring instrument 100 are transferred wirelessly or by wire to another terminal (for example, a small personal computer or a tablet terminal), and then processed and recorded by the other terminal. Since the processing may be performed, a device corresponding to this control circuit 150 may be provided in another terminal. (If the main body of the measuring instrument and the control circuit are separated, the main body of the measuring instrument and the control circuit may be combined as a "measuring instrument", or the separated configuration is called a measuring instrument. If there is a sense of incongruity, the measuring instrument main unit and the control circuit may be collectively called a measuring instrument unit.)

An example of the operation of control circuit 150 will be described.
When using the measuring instrument 100, the user turns on the power button (switch), or if the measuring instrument 100 is in the sleep mode, performs some input operation to cancel the sleep mode and turn on the measuring instrument 100. to the active state.
When the measuring device 100 is activated, the control circuit 150 first starts a user identification operation (user identification step). That is, the control circuit 150 detects the movement of the measuring device 100 itself caused by the user holding the measuring device 100 in his/her hand, and acquires the sensor signal from the inertial sensor 200 as motion information. do. When the motion information is subjected to processing such as integral calculation by the motion calculation unit 151, the trajectory of the motion of the measuring device 100 when the user holds and moves the measuring device 100 is obtained. The trajectory information of the movement of the measuring device 100 thus obtained is sent to the user identification means 160 .

In addition, when the control circuit 150 starts the user identification operation (user identification process), this may be explicitly indicated to the user, or may be secretly performed in the background without notifying the user. may be executed. The initiation of the user identification process may be explicitly indicated to the user by a display on display 140 or by a voice message.

FIG. 4 is a diagram exemplifying registration information registered in the user information registration unit 170. As shown in FIG.
Information of a person who uses the measuring instrument 100 is registered in the user information registration unit 170 as user information for each user. The user identification information here is a motion pattern. At the start of measurement by the measuring instrument 100, one or more movements from the user lifting the measuring instrument 100 to actually measuring the workpiece are registered as movement patterns.

Such motion pattern information is obtained as a motion pattern for identification of the person by actually measuring the motion of the measuring device 100 by having the user perform the measurement work several times using the measuring device 100 . The movement pattern for each user thus obtained is registered in the user information registration section 170 . The movement patterns include, for example, walking from holding the measuring device 100 to moving to the measurement location, and lifting the measuring device 100 on the table to the front of the face when using the measuring device 100. It may be one or more selected from the naturally required natural movement patterns.

Alternatively, for user identification based on movement patterns, a predetermined action may be performed as the action for the user identification process. For example, a motion of holding the measuring device 100 and shaking the measuring device 100 left and right or up and down may be determined as a motion for user identification and registered as a motion pattern of the user information. The user may decide to perform this predetermined operation each time the measurement work is started. The motion pattern for user identification may be the same for all the users, but the motion for user identification may be different for each individual.
When the operation for user identification is made different for each individual, the operation for identification of each person may be made public (not secret) or may be kept secret by each individual.

The user identification means 160 compares the motion pattern obtained by the motion calculation section 151 with the motion pattern for each individual registered in the user information registration section 170, and identifies the person who actually holds the measuring device 100 in his or her hand. identify and identify who the After identifying the individual user holding the measuring instrument 100 in this way, when the user measures the workpiece and records the measured values, the control circuit 150 records the measured values and also performs the user identification process. The obtained user information (name, personal ID, etc.) is recorded in the measurement recording unit 180 .

When recording the measured value, the individual identification number (product number, etc.) of the measuring device 100 itself and the date and time when the measured value was obtained are also recorded. Also, it is preferable to record the movement pattern itself used for user identification as log data.

Since the human body, for example, the length of arms and legs, and the length between joints, differs from person to person, when walking while holding the measuring device 100 or shaking the measuring device 100 left and right or up and down, There is a difference between individuals in the movement. For example, even if the measuring device 100 is moved up and down in the same way (shakes up and down), the trajectory of the detected movement differs for different people, reflecting the characteristics of each individual. This can be used to identify individuals based on movement patterns. By performing individual identification based on the movement pattern, compared to manually performing user authentication work for each measurement, labor is reduced and work efficiency (measurement efficiency) is improved. In addition, when user authentication work is performed manually (for example, by entering a personal ID or password, or by selecting from among user candidates), if an incorrect entry is made, it will be recorded as measurement data performed by another person. There is a risk that the reliability of the traceability of records will be shaken. In this regard, if a movement pattern is used for individual identification, mistakes in user identification (authentication) can be prevented, and the reliability of measured values can be improved.

(Modification 1)
In the above example, the user identification means 160 compares the motion pattern obtained by the motion calculation section 151 with the motion pattern for each individual registered in the user information registration section 170, and actually holds the measuring device 100 in hand. to identify and identify the person who has the
Pattern matching may be assumed for this, but as a modification, the user identification means 160 may be an AI estimation system obtained by machine learning. For example, training data recording a combination of a user ID and a predetermined motion pattern of the user is prepared for each user, and learning is performed to output the user ID as an output value from the motion pattern as input data. An estimated model may be used as the user identification means 160 .

Alternatively, a human body model for each user (a model of arm, leg length, joint-to-joint length, etc.) is registered in the user information registration unit 170, and the user identification means 160 uses the inertial sensor 200 The user may be identified by back-calculating a human body model that matches the motion pattern obtained from the motion pattern.

(Second embodiment)
Next, a second embodiment of the invention will be described.
In the above-described first embodiment, an example has been described in which user identification is performed based on the motion pattern of each user.
As a second embodiment, in addition to the functions of the first embodiment (user identification based on movement patterns), a case will be described in which user identification is performed using other information.
FIG. 5 is a functional block diagram of the control circuit 150 of the measuring instrument according to the second embodiment.
FIG. 6 shows an example of personal identification information registered in the user information registration unit 170. As shown in FIG.

As illustrated in FIG. 6, dynamic personal identification information and static personal identification information are registered as identification information for each user.
The dynamic personal identification information is the motion pattern for personal identification described in the first embodiment. Static personal identification information is information for identifying and authenticating an individual other than a movement pattern. An image pattern, a face image pattern, and the like are included.

Returning to control circuit 150 of FIG. 5, user identification means 160 comprises dynamic user identification means 161 and static user identification means 162 .
The dynamic user identification means 161 is identification means for identifying the user by the movement pattern described in the first embodiment. The static user identification means 162 is means for identifying and authenticating users based on static personal identification information. For example, the user is identified based on an ID number, password, or image (fingerprint, etc.) input via input means such as a button (switch), touch panel, or camera.

When the measuring device 100 is activated, the control circuit 150 first starts a user identification operation (user identification step). The user identification operation (user identification process) includes a dynamic user identification process by dynamic user identification means 161 and a static user identification process by static user identification means 162 .

First, when the control circuit 150 starts the user identification operation (user identification step), the user is explicitly shown (displayed on the display unit 140 or notified by a voice message) that the static user identification step is to be performed. ), input of an ID number for user identification (including selection from among candidates), or input of an image (fingerprint, etc.) (for example, scan input).
The static user identification means 162 compares the input static user identification information with the static user identification information registered in the user information registration section 170 to identify the user.
Now, let the user identified by the static user identification information be the static information authenticated user. Further, as described in the first embodiment, the dynamic user identification means 161 identifies the user based on the movement pattern. The user identified by the dynamic user identification means 161 is the dynamic information authenticated user.

After identifying the static information authentication user and the dynamic information authentication user, when the user measures the workpiece and records the measured value, the control circuit 150 records the measured value and the static information authentication use. The user and the dynamic information authentication user are recorded in the recording unit 180 together. The static information used for user identification and the movement pattern itself may also be recorded as log data.

In this way, users are identified by different types of identification information, such as static information authentication users and dynamic information authentication users, and measurements are made by recording them together with measured values. Measurement traceability is improved because the identification of the person is more certain.

(Modification 2)
The static information authentication user identified by the static information and the dynamic information authentication user identified by the movement pattern should normally match, but in some cases, they may not match. The cause may be malfunction of the dynamic user identification means 161 or static user identification means 162, or unintentional (or intentional) erroneous input of static information.

If the static information authentication user and the dynamic information authentication user do not match, the following measures can be taken.
The control circuit 150 may notify the user by a display message or a voice message that the static information authentication user and the dynamic information authentication user do not match. In this case, the user returns to the start of the user identification process to input static information and perform dynamic identification movements (movements).

Even if the static information authentication user and the dynamic information authentication user do not match, the recording of the measurement may be started as it is. For example, if there is a discrepancy between the static information authentication user and the dynamic information authentication user, a flag is added so that this fact can be immediately recognized. It is possible to trace who the actual measurer was again from the information and movement patterns. In addition to the static information and movement pattern used for user identification, it is expected that the actual user can be identified by adding information such as the date and time of measurement.

The present invention is not limited to the above embodiments, and can be modified as appropriate without departing from the scope of the invention.

100 Measuring instrument 110 Fixed body part 120 Probe 130 Displacement sensor 140 Display part 150 Control circuit part 150 Control circuit 151 Motion calculation part 160 User identification means 161 Dynamic user identification means 162 Static user identification means 170 User information Registration unit 180 Measurement recording unit 200 Inertial sensor

Claims (9)

A small-sized measuring instrument having a stationary body and a measuring element supported by the stationary body for detecting the surface of an object to be measured, and is manually held and moved by a user or used for measurement operation, ,
a user information registration unit in which information of one or more users who perform measurement operations using the measuring instrument is set and registered;
user identification means for identifying a user who is actually performing a measurement operation using the measuring instrument from among the users registered in the user information registration unit;
A measuring instrument, comprising: a measurement recording section for recording together user information identified by the user identification means and a measured value by the measuring instrument. The measuring instrument according to claim 1,
Furthermore, having an inertial sensor provided to move integrally with the measuring instrument,
The user identification means is
A measuring instrument comprising dynamic user identification means for identifying a user based on a movement pattern of the measuring instrument that differs from user to user when the user moves with the measuring instrument. The measuring instrument according to claim 2,
In the user information registration unit,
One or more motion patterns of the measuring device selected from the motions from the user picking up the measuring device to obtaining the measured value with the measuring device are registered for each user. measuring instrument. The measuring instrument according to claim 2,
In the user information registration unit,
A measuring instrument characterized in that movement patterns of the measuring instrument according to movements determined for each user as movement for user identification are registered for each user. In the measuring instrument according to any one of claims 2 to 4,
A measuring instrument, wherein the dynamic user identification means records a movement pattern used for user identification as log data. In the measuring instrument according to any one of claims 2 to 5,
The user information registration unit further includes personal ID number, password, fingerprint pattern, vein image pattern, voice pattern, iris image pattern, retina image pattern, and face as information for identifying and authenticating an individual other than the movement pattern. One or more pieces of information selected from image patterns are registered as static personal identification information,
A measuring instrument, wherein said user identification means further comprises static user identification means for identifying a user based on said static personal identification information. The measuring instrument according to claim 6,
The measurement recording unit stores, together with the record of the measured value, a dynamic information authentication user identified and authenticated by the dynamic user identification means and a static information authentication user identified and authenticated by the static user identification means. A measuring instrument characterized by recording a user and The measuring instrument according to claim 6,
If the dynamic information authentication user identified and authenticated by the dynamic user identification means and the static information authentication user identified and authenticated by the static user identification means do not match, use that fact. A measuring instrument characterized by notifying a person. The measuring instrument according to claim 6,
When the dynamic information authentication user identified and authenticated by the dynamic user identification means and the static information authentication user identified and authenticated by the static user identification means do not match,
The measurement recording unit stores a measured value, a static information authentication user, a dynamic information authentication user, and a flag indicating that the static information authentication user and the dynamic information authentication user do not match. A measuring instrument characterized by recording.

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