KR101978994B1 - Surveillance device, surveillance method and storage medium - Google Patents

Abstract

The monitoring apparatus includes: counting means for counting the number of detections when the article is unloaded in each of the plurality of gates, or a numerical value based on the number of detections for each gate for each predetermined period, and from the counting result, monitoring among the plurality of gates. Output means for outputting information about the gate to be enhanced.

Description

SURVEILLANCE DEVICE, SURVEILLANCE METHOD AND STORAGE MEDIUM

The present invention relates to a monitoring apparatus, a monitoring method, and a storage medium.

Japanese Patent Laid-Open No. 2007-036498 describes a technique for preventing the export of confidential documents. In this technique, the gate is provided with a function of detecting a magnetic material using a large Barkhausen effect, and the gate is closed when a magnetic material entered into the paper is detected.

An object of the present invention is to monitor the export of the article by using information obtained by statistically processing the detection result of the article release.

According to the first method of the present invention, in each of a plurality of gates, counting means for counting the number of detections based on the number of detections detected or the number of detections for each gate for each predetermined period, and from the counting result, There is provided a monitoring apparatus having output means for outputting information concerning a gate to enhance monitoring among a plurality of gates.

According to the second method of the present invention, the numerical value is at least one of a detection rate that is a ratio of the number of times of detection and the number of times that a person has passed through the gate, a rate of change of the number of times of detection, or a rate of change of the rate of detection.

According to the third method of the present invention, the output means outputs the counting result for each gate in accordance with the number of detections or the numerical value.

According to the fourth solution of the present invention, the output means outputs an aggregation result of the gate to enhance the monitoring based on the aggregation result.

According to the fifth solution of the present invention, the output means outputs instruction information for increasing the detection sensitivity of the gate to enhance the monitoring.

According to a sixth aspect of the present invention, the instruction information includes an excitation current supplied to an excitation coil for applying a vibrating magnetic field to a magnetic body provided in the article, and the magnetic body is applied when the vibrating magnetic field acts on the magnetic body. It is an instruction to adjust at least one of the threshold values of the said matching degree at the time of determining the carrying out of the said article according to the matching degree of the waveform of the pulse to generate | occur | produce and the waveform previously stored.

According to the seventh solution of the present invention, the adjusting means is an instruction to increase the exciting current to the gate to enhance the monitoring.

According to the eighth aspect of the present invention, for each of the plurality of gates, the magnetic body is applied when an exciting current supplied to an excitation coil for applying a vibrating magnetic field to a magnetic body provided in the article and / or a vibrating magnetic field acts on the magnetic body. The threshold value of the coincidence in determining the ejection of the article according to the coincidence of the waveform of the generated pulse and the waveform stored in advance is reduced to reduce the undetection in which the ejection is not detected even when the article is taken out. The monitoring apparatus further has an adjusting means for adjusting the setting to any one of the setting for the control and the setting for reducing the false detection of the carrying out even when the article is not carried out.

According to the ninth aspect of the present invention, the adjusting means is configured to reduce the detection of the excitation current or the threshold value, which is not detected even when the article is taken out, and the carrying out even when the article is not taken out. Switch to any one of the settings for reducing the false detection detected.

According to a tenth aspect of the present invention, in each of a plurality of gates, a counting step of counting the number of detections based on the number of detections or the number of detections based on the number of detections detected for each gate for each predetermined period; There is provided a monitoring method having an output process for outputting information about a gate to enhance monitoring among a plurality of gates.

According to the methods of the first, the tenth, the eleventh, the carrying out of the article can be monitored using the information which statistically processed the detection result of the carrying out of the article.

According to the second method, the carrying out of the article can be monitored using a variety of information as compared with using only the count result of the number of detections.

According to the third method, it is possible to make it easier for the user to grasp the monitoring situation as compared with the case where the counting result is not sorted.

According to the fourth method, it is possible to make it easier for the user to grasp the monitoring situation as compared with the case of outputting the counting result without selecting the gate.

According to the fifth method, it is possible to enhance monitoring of the selected gate as compared with the case where no adjustment means is provided.

According to the sixth method, monitoring of the selected gate can be enhanced in the configuration of detecting the carrying out of the article by using a magnetic material that generates a pulse by a vibrating magnetic field.

According to the seventh method, it is possible to reduce the undetection in which the carrying out of the article is not detected even when the article is taken out, as compared with the case where the excitation current is constant regardless of the number of times the articles are actually taken out.

According to the eighth solution, it is possible to reduce the erroneous detection in which the carrying out is detected even when the article is not taken out, compared to the case where the threshold is constant regardless of the number of times the articles are actually taken out.

According to the ninth method, it is possible to select which of the reduction of the non-detection and the reduction of the false detection is prioritized.

1 shows a monitoring system 1.
2 illustrates a hardware configuration.
3 shows monitoring data.
4 is a flowchart showing the operation of the monitoring apparatus 2;
Fig. 5 shows the displayed aggregation result.
6 is a diagram illustrating another example of an aggregation result.
7 is a diagram illustrating another example of an aggregation result.
8 is a diagram illustrating another example of an aggregation result.
9 is a diagram illustrating setting contents of an excitation current and a threshold value.
10 is a flowchart showing a procedure of adjusting detection sensitivity.
11 shows a functional block of the monitoring device 2.

An example of embodiment of this invention is described.

<Configuration>

1 is a diagram illustrating the monitoring system 1. The monitoring system 1 includes a monitoring device 2 (an example of an information processing device), a gate 3, and a communication line 4. In this example, although the gates 3A, 3B, 3C, 3D, 3E, and 3F are shown, any number of gates may be any number. In addition, when a some gate is not distinguished, it is called the gate 3 generically.

The gate 3 is a gate that a person passes through when entering and leaving a permission area where handling of confidential documents is permitted. The handling of confidential documents is the act of storing, reading, creating, and making a suspension of confidential documents. The export of confidential documents from the permitted area is prohibited by the rules, but there may be cases in which confidential documents may be taken out of the authorized area. In this embodiment, the carrying-out of the confidential document is detected at the position of the gate 3. At least one gate 3 is provided in the permission zone. The gate 3 is provided with two panels provided to face each other at intervals for human passage. The gate 3 and the monitoring device 2 are connected by a communication line 4 such as a LAN (Local Area Network) or the Internet. The monitoring device 2 is a device for processing information obtained from the gate 3.

A confidential document is a document created by using a printing paper containing a magnetic wire (hereinafter referred to as a magnetic substance attached paper) as a recording medium. Magnetic wire is thinner than the thickness of printing paper made of amorphous magnetic material, and when vibrating magnetic field acts, it causes periodic magnetization reversal (large Barkhausen effect). Only papers with magnetic substance are allowed to be handled in the permitted area by the rule. It is forbidden by rule to take paper which is not magnetic substance paper into the permission area.

2 is a diagram illustrating a hardware configuration. In the figure, one of the plurality of gates is shown. The monitoring device 2 includes a control unit 21, a storage unit 22, a communication unit 23, a display unit 24, and a reception unit 25. The control unit 21 includes a computing device such as a CPU and a storage device such as a ROM or a RAM. The ROM stores firmware that describes hardware and OS startup procedures. RAM is used to store data when the CPU executes arithmetic. The storage unit 22 includes a hard disk storage device, for example, and stores an OS, an application program, and the like. The communication part 23 is provided with the communication I / F for performing communication with the control apparatus provided in the gate 3. As shown in FIG. The display unit 24 includes a liquid crystal display device and the like. The acceptor 25 includes a keyboard, a mouse and the like.

The plurality of gates 3 all have the following configurations. The gate 3 includes a detection device 5, a human body sensor 6, an imaging device 7, and a control device 8.

The detection apparatus 5 detects the export of the confidential document from the permission area. Specifically, the detection apparatus 5 includes an excitation coil 51, a power supply 52, an antenna 53, and a detection circuit 54. The excitation coil 51 receives a supply of AC power from the power source 52 to generate a vibrating magnetic field. As the person who traveled the confidential document approaches the gate 3, the amplitude of the vibrating magnetic field acting on the magnetic wire increases, and when the amplitude of the vibrating magnetic field reaches the threshold, periodic magnetization reversal occurs in the magnetic wire. The magnetic wire generates an electrical pulse accompanying the magnetization reversal.

The detection circuit 54 determines whether or not the confidential document is carried out, for example, in accordance with the waveform of the pulse received by the antenna 53. Specifically, the waveform of the pulse generated when the magnetic substance-adhered sheet approaches the detection device 5 is stored in advance in the detection circuit 54. The detection circuit 54 compares the waveform of the received pulse with a waveform stored in advance, obtains a degree of agreement between the two, and determines the carrying out of the confidential document according to the degree of agreement. The degree of coincidence appears, for example, in accordance with the correlation coefficient between the waveform of the received pulse and the waveform stored in advance. When the calculated correlation coefficient reaches the threshold value, the detection circuit 54 determines that the confidential document has been carried out, and transmits a detection signal indicating that the carrying out of the confidential document has been detected to the control device 8.

In addition, the object of carrying out detection by the detection apparatus 5 is not limited to a confidential document. For example, the carrying out of the article may be detected by attaching a magnetic wire to an article other than paper. That is, a confidential document is an example of the article which a detection apparatus detects carrying out.

The human body sensor 6 detects that a person has passed through the gate 3. The human body sensor 6 includes, for example, a light source for emitting infrared rays in one panel of the gate 3, and a light receiving element for receiving infrared rays in the other panel, so that the infrared light received by the light receiving element is When shut off, a passing signal indicating that a person has passed through the gate 3 is transmitted to the control device 8.

The control device 8 instructs the photographing device 7 to take a picture when the passing signal is received from the human body sensor 6. The imaging device 7 photographs a person passing through the gate 3 in accordance with this instruction. The imaging device 7 is a digital still camera, for example, and an angle is set so that at least the upper body of the person passing through the gate is imaged. The imaging device 7 generates image data representing the captured image and transmits it to the control device 8.

3 is a diagram illustrating monitoring data. When the control device 8 receives the passing signal from the human body sensor 6, the control device 8 generates monitoring data and transmits the monitoring data to the monitoring device 2. The monitoring data includes the items of "passing date and time", "passing gate", "document export" and "image presence". The term “passing date and time” is a date and time when a person passed through the gate 3, that is, a date and time when a passing signal was received from the human body sensor 6. When the control device 8 receives the passing signal, the control device 8 acquires the date and time by the clock function of the control device 8. "Pass Gate" is information for identifying a gate passed by a person. The control apparatus 8 memorize | stores the identifier (for example, 3A, 3B, etc.) of the gate 3 in which the said control apparatus 8 was installed. "Whether document is exported" indicates the presence or absence of confidential documents. When the detection signal is received at the same time as the passage signal is received, "Yes" is set to "None". However, when a confidential document is taken out, a time difference occurs between the reception of the passing signal and the reception of the detection signal. Therefore, if the time difference between the reception of both is less than or equal to the threshold (for example, one second), the passing signal and the detection signal are simultaneously displayed. Judging by the received. "Image presence" is the presence or absence of image data generated by the photographing apparatus 7. When there is image data, the control device 8 transmits the image data to the monitoring device 2 together with the monitoring data.

In addition, the monitoring device 2 may be provided with the function of the control device 8. In addition, the control device 8 may include a computing device such as a CPU and a storage device such as a ROM or a RAM, and may be a device that realizes the above functions by executing a program, and the above-described functions are implemented by hardware circuits. You may also.

<Aggregation of monitoring data>

4 is a flowchart showing the operation of the monitoring apparatus 2. 11 is a diagram illustrating a functional block of the monitoring device 2.

Initially, in step S01, the control unit 21 periodically determines whether or not monitoring data has been received, and when receiving monitoring data (step S01: YES), the processing of the control unit 21 returns to step S02. When the monitoring data is not received (step S01: NO), the process of the control unit 21 returns to step S01.

Next, in step S02, the control unit 21 aggregates monitoring data. Specifically, the control unit 21 counts the number of passes, the number of detections, and the detection ratio. The number of passes is the number of times a person has passed through the gate 3, and when a monitoring data is received, 1 is added to the counter of the number of passes. The number of times of detection is the number of times that the export of the document has been detected, and when the document presence or absence of monitoring data is present, 1 is added to the counter of the number of detection. The detection ratio is a value indicating the ratio of the number of detections to the number of passes as a percentage. The control unit 21 aggregates the monitoring data on a daily basis, for example. That is, each time monitoring data is received, the result of the monitoring data received after 0 AM of the day is updated, and when the date is changed, the result of the previous day is stored in the storage unit 22 in correspondence with the date and passed. The counter for the number of times and the number of detections is returned to zero.

Next, in step S03, the control unit 21 updates the screen showing the aggregation result and outputs it to the display unit 24. At this time, although the counting result of all the gates 3 may be displayed, it is monitoring by selecting the gate 3 (henceforth a monitoring strengthening gate) which should be strengthened monitoring, and displaying the counting result of the gate 3. It is preferable from a viewpoint of efficiency. Although the monitoring reinforcement gate may be selected in any order, for example, the number of detections and the maximum value of the detection ratio of each gate 3 are ranked, and several gates 3 are selected from the top of the ranking to be counted. You may display the result. Alternatively, all the gates 3 may be arranged in order according to their rank. Alternatively, the counting results of all the gates 3 may be displayed, and the gate 3 to display the counting results may be selected at the user's discretion. If the result of the aggregation is displayed, the process of the control unit 21 returns to step S01.

5 is a diagram illustrating the displayed aggregation result. In this example, the gates 3A and 3B are selected as the monitoring reinforcement gates, and a broken line graph of the counting result for the last two weeks is displayed for these two places. The detection frequency 3A has shown the maximum value on the first and second weeks on Friday. The detection frequency 3B has shown the maximum value on Wednesday in both the 1st week and the 2nd week. The detection ratio 3A shows the maximum value on the first and second weeks on Friday. The detection ratio 3B shows the maximum value on both the first week and the second on Wednesday. From these results, for example, with respect to the gate 3A, Friday is a candidate for the day of the week on which the monitoring should be enhanced (hereinafter referred to as monitoring enhancement day). The monitoring enhanced day may be determined by the user by viewing the displayed graph, or the monitoring apparatus may extract and display the maximum value of the counting result. In addition, the monitoring device 2 may periodically transmit the data including the determination result to the designated transmission destination by attaching it to an e-mail.

In addition, you may judge monitoring strengthening days based on the change rate of a detection rate. The rate of change of the detection rate is the ratio of the detection rate of the second day to the detection rate of the first day of the adjacent two days. On the graph, the rate of change appears according to the slope of the broken line. In the example of the detection rate 3B, since the rate of change of the detection rate is the largest on Friday of the first week, Friday is the candidate for the monitoring reinforcement day. Moreover, you may judge the monitoring strengthening day based on the change rate of the detection frequency.

That is, the control part 21 is an example of the counting means 201 which aggregates the number of detections which carried out the removal of articles | goods in each of the some gate 3, or the numerical value based on the said detection count for every gate for every fixed period. . In addition, the control part 21 is an example of the output means 202 which outputs the said counting result, changing a form of an output based on the counting result for every gate by the counting means 201. As shown in FIG.

6 is a diagram illustrating another example of an aggregation result. In this example, the detection rate of each gate and the maximum value of the change rate are ranked for each day of the week, and the top three places of each day are highlighted. In addition, in the figure, the detection rate is described by the information leakage rate.

7 is a diagram illustrating another example of an aggregation result. This example is a table of numerical data on which the graph of FIG. 5 is based.

8 is a diagram illustrating another example of an aggregation result. In this example, the sum of the numerical data of FIG. 7 for each day is displayed as a line graph.

<Adjustment of detection sensitivity>

Next, adjustment of the detection sensitivity of the detection apparatus 5 is demonstrated. If the monitoring enhancement gate has been selected as described above, the monitoring device 2 instructs the control device 8 of the monitoring enhancement gate to adjust the detection sensitivity. The detection sensitivity is adjusted by adjusting the excitation current supplied to the excitation coil 51 and by adjusting the threshold of the correlation coefficient that the detection circuit 54 uses for carrying out the confidential document.

That is, the control part 21 is an example of the adjustment means 203 which adjusts the detection sensitivity of the detection apparatus which detects carrying out of the article in the gate selected based on the counting result.

9 is a diagram illustrating setting contents of an excitation current and a threshold value. Note that the numerical values of the excitation current value and the threshold value shown are examples and may be set to other numerical values. The normal setting is the setting for the gate 3 rather than the supervision strengthening gate. In the normal setting, the threshold of the correlation coefficient is 90%, and the excitation current value is 1A. The supervision strengthening settings 1 to 3 are settings for the supervision strengthening gate, and increase the excitation current value to 1.5 A in order to improve the detection sensitivity of the supervision strengthening gate. In addition, in the monitoring enhancement settings 1 to 3, the threshold values of the correlation coefficients are set to 90%, 92%, and 95%, respectively. Increasing the threshold of the correlation coefficient directly lowers the detection sensitivity. However, which threshold value is set is determined in consideration of the balance between the undetected and false detections. Undetected means that a confidential document has been exported but no export has been detected. False detection means that an export is detected even if a confidential document is not exported.

Determination of non-detection and false detection is performed as follows, for example. As described above, the paper which is not the magnetic substance-adhered paper is prohibited from being brought into the permission area by the rule, so that when the document is taken out from the permission area, the document is a confidential document. The control unit 21 determines whether the secret document is carried out by analyzing the photographed image, and compares this determination result with the detection result of the detection device 5. When the determination result from an image is carrying out and the detection result of the detection apparatus 5 is no carrying out, the control part 21 determines with no detection. When the determination result from an image has no carrying out and the detection result of the detection apparatus 5 has carrying out, the control part 21 determines with a misdetection.

(1) enhanced surveillance settings 1

The monitoring enhancement setting 1 increases the exciting current value compared with the normal setting, but increases the detection space for detecting the confidential document by not changing the threshold of the correlation coefficient (90%). According to this setting, undetected is reduced compared to the normal setting, but false detection is increased. Therefore, this setting is preferable in the case of prioritizing the reduction of undetected.

(2) enhanced surveillance settings 2

The monitoring enhancement setting 2 increases the excitation current as compared with the normal setting and raises the threshold value of the correlation coefficient (90% → 92%), thereby making the detection space for detecting the confidential document equivalent to the normal setting. According to this setting, the false detection is equivalent to the normal setting, but the false detection is reduced. Therefore, this setting is preferable when giving priority to the reduction of false detection.

(3) enhanced surveillance 3

The monitoring enhancement setting 3 increases the excitation current as compared with the normal setting, and raises the threshold value of the correlation coefficient from the monitoring enhancement setting 2 (92% to 95%), thereby monitoring the detection space for detecting confidential documents. Increase than 2. According to this setting, undetected or false detection is reduced as compared with the normal setting. However, the effect of reducing non-detection is lower than the monitoring enhancement setting 1, and the effect of reducing false detection is lower than the monitoring enhancement setting 2. Therefore, this setting is an intermediate setting between the supervision strengthening setting 1 and the supervision strengthening setting 2, and is preferable when both undetected and false detection are to be reduced.

10 is a flowchart showing a procedure for adjusting detection sensitivity.

Initially, in step S11, the control unit 21 selects the monitoring enhancement gate.

Next, in step S12, the control unit 21 performs monitoring enhancement setting 3.

Next, in step S13, the control part 21 monitors for the period determined by the procedure shown in FIG. A fixed period of time is something like tens of minutes, hours, or days.

Next, in step S14, the control part 21 determines whether the number of false detections in a predetermined period has reached the threshold value. When the number of false detections reaches the threshold (step S14: YES), the process of the control unit 21 proceeds to step S15. When the number of false detections does not reach the threshold (step S14: NO), the control unit ( The process of 21 proceeds to step S16.

Next, in step S15, the control part 21 makes monitoring strengthening setting 2, and returns to the process of step S13.

On the other hand, in step S16, the control unit 21 determines whether or not the number of times of non-detection in the predetermined period reaches the threshold value. This threshold may be different from or the same as the threshold of the determination in step S14. If the number of undetected times reaches the threshold (step S16: YES), the process of the control unit 21 proceeds to step S17. When the number of undetected times does not reach the threshold (step S16: NO), the control unit ( The process of 21) returns to step S12.

Next, in step S17, the control unit 21 performs monitoring enhancement setting 1 and returns to the processing of step S13.

<Variation example>

Embodiment may be modified as follows. Moreover, you may combine several modified examples.

Instead of the <1> magnetic material-adhered paper, a paper in which an RFID tag or the like is inserted may be used. In that case, the tag reader / writer is attached to the gate 3 as the detection device 5. To adjust the detection sensitivity, the intensity of radio waves emitted by the tag reader / writer is adjusted.

Instead of the magnetic wire, a sheet containing a thin magnetic material or the like may be used.

The human body detecting sensor 6 may be a device that detects the passage of a person using ultrasonic waves, light, or the like.

An alarm device or an opening / closing device for the door may be provided in the gate 3 so that an operation such as an alarm or closing of the door may be performed when the ejection of the confidential document is detected.

<2>

In the above-mentioned embodiment, although the example which aggregates monitoring data on a daily basis was shown, you may aggregate for every time slot. The time for updating the counting result may be, for example, a fixed time on a weekday or a fixed time every day.

<3>

The determination of the non-detection and the misdetection may be performed by the user determining the presence or absence of the carrying out of the image by visual observation and comparing the determination result with the detection result of the detection apparatus.

In addition, you may determine a nondetection with the following structures. For example, suppose that it is prescribed in the rules that export is permitted by applying for the release of confidential documents in advance. An RFID card is attached to an ID card that is allowed to enter or leave the permission area, and a tag reader / writer for reading an ID from the RFID tag is provided at the gate. The monitoring apparatus 2 registers the ID (hereinafter referred to as applicant ID) of the person who previously applied for the export of the confidential document. Although the applicant ID is detected by the tag reader / writer, when the carrying out of the confidential document is not detected by the detection device 5, the monitoring device 2 determines that it is not detected.

This ID card is preferably operated so as to be suspended only when the confidential document is carried out. In addition, the gate may be provided with an input means for inputting the presence or absence of a confidential document by a traveler of the ID card at the time of passage through the gate. The input means may be a push button or the like or a touch panel or the like. By providing such an input means, it is prevented that it is judged as undetected when the traveler of an ID card passes through the gate without leaving a confidential document. When inputting the presence or absence of a confidential document by the input means, the traveler of an ID card may input the sequential or nonexistence of a confidential document at the time of passage through a gate. Alternatively, the presence or absence of confidential documents may be entered only in the case where the export of the confidential document is not detected even though the applicant ID is detected, or when the applicant ID is detected and the export of the confidential document is also detected. According to this structure, the burden on the operator of an ID card is reduced compared with the structure which inputs the presence or absence of the suspension of a confidential document sequentially.

<4>

You may adjust a detection sensitivity as follows. When the excitation current and the threshold value are set normally (see FIG. 9), monitoring is performed for a predetermined period of time, and when the number of detections has reached the threshold value, the excitation current is increased, and the number of false detections reaches the threshold value. The threshold of the degree of correspondence (correlation coefficient) may be made high. The threshold of the number of times of non-detection and the threshold of the number of false detections may be different values or may be the same value. In short, the excitation current may be increased when the number of times the article is actually carried out is greater than the number of detections, and the threshold of the degree of agreement may be increased when the number of times the article is actually carried out is less than the number of times of detection.

<5>

In the embodiment, the control unit 21 of the monitoring device 2 shows an example of realizing the above functions by executing an application program, but the above functions may be mounted on the monitoring device 2 by a hardware circuit. The program may be recorded and provided in a computer-readable recording medium such as an optical recording medium or a semiconductor memory, and the program may be read from the recording medium and installed in the monitoring apparatus 2.

Claims (11)

Counting means for counting the number of times of detection of the removal of the article from each of the plurality of gates or a value based on the number of detections for each gate for each predetermined period;
From the counting result, information about a gate to enhance monitoring among the plurality of gates is output, and based on the counting result, the counting result of the gate to enhance monitoring is output, and the detection sensitivity of the gate to enhance the monitoring is increased. Has output means for outputting instruction information
The instructing information includes an excitation current supplied to an excitation coil for applying a vibrating magnetic field to a magnetic body provided in the article, and waveforms of pulses generated by the magnetic body when the vibrating magnetic field acts on the magnetic body and stored in advance. The monitoring apparatus which is an instruction | indication which adjusts at least one of the threshold values of the said agreement degree at the time of determining the carrying out of the said article according to the agreement degree of a waveform. The method of claim 1,
The numerical value is at least one of a detection rate that is a ratio of the number of times of detection and the number of times that a person has passed through the gate, a rate of change of the number of times of detection, or a rate of change of the rate of detection.
monitor. The method of claim 1,
The output means sorts and outputs the counting result for each gate according to the number of detections or the numerical value.
monitor. delete delete delete The method of claim 1,
The instruction information is an instruction to increase the excitation current to a gate to enhance the monitoring.
monitor. The method of claim 1,
For each of the plurality of gates, an excitation current supplied to an excitation coil for applying a vibrating magnetic field to a magnetic body provided in the article, and waveforms of pulses generated by the magnetic body when the vibrating magnetic field acts on the magnetic body and waveforms stored in advance. Setting at least one of the threshold values of the degree of coincidence when determining that the article is to be taken out according to the degree of matching, and for reducing undetection in which the article is not detected even when the article is taken out; It further has adjustment means for adjusting to any one of the settings for reducing the misdetection which export is detected even if it is not carried out.
monitor. The method of claim 8,
The adjusting means is set to reduce the detection of the excitation current or the threshold value, which is not detected even when the article is taken out, and to reduce the misdetection that the carry out is detected even when the article is not taken out. To switch to either
monitor. An aggregation step of counting the number of detections when the article is removed from each of the plurality of gates or a value based on the number of detections for each gate for each predetermined period;
From the counting result, information about a gate to enhance monitoring among the plurality of gates is output, and based on the counting result, the counting result of the gate to enhance monitoring is output, and the detection sensitivity of the gate to enhance the monitoring is increased. Has an output process for outputting instruction information
The instructing information includes an excitation current supplied to an excitation coil for applying a vibrating magnetic field to a magnetic body provided in the article, and waveforms of pulses generated by the magnetic body when the vibrating magnetic field acts on the magnetic body and stored in advance. The monitoring method which is an instruction | indication which adjusts at least one of the threshold values of the said agreement degree at the time of determining the carrying out of the said article according to the agreement degree of a waveform. A computer readable recording medium storing a program for causing a computer to execute a process,
The processing is
An aggregation step of counting the number of detections when the article is removed from each of the plurality of gates or a value based on the number of detections for each gate for each predetermined period;
From the counting result, information about a gate to enhance monitoring among the plurality of gates is output, and based on the counting result, the counting result of the gate to enhance monitoring is output, and the detection sensitivity of the gate to enhance the monitoring is increased. Has an output process for outputting instruction information
The instructing information includes an excitation current supplied to an excitation coil for applying a vibrating magnetic field to a magnetic body provided in the article, and waveforms of pulses generated by the magnetic body when the vibrating magnetic field acts on the magnetic body and stored in advance. A computer-readable recording medium which is an instruction to adjust at least one of the threshold values of the matching degree in determining the carrying out of the article in accordance with the matching degree of the waveform.

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