JP2019092144A - Visitor recording system, computer program, human detection unit, and visitor recording system construction kit - Google Patents

Abstract

To provide a visitor recording system with a simple and low cost configuration, which can reliably detect a visitor at a business processing counter so as to distinguish the visitor from other moving objects or stationary objects, and can record the behavior of the visitor at the counter without waste.SOLUTION: A Doppler sensor module 3 is placed close to a visitor VP staying at the front of a business processing counter 10 to such an extent that the heart rate and/or respiration of the visitor VP can be detected. A frequency band covering a signal component derived from at least one of the heart rate and respiration is defined as a detection target band, and the strength of a detection target band component in a detection signal of the Doppler sensor module 3 is analyzed. Then, visit determination means determines the presence or absence of the visitor VP in front of the counter 10 on the basis of the analysis result, and when it is determined that the visitor VP is present, recording control means causes a recording device 62 to start to record a captured moving image.SELECTED DRAWING: Figure 1

Description

  The present invention is a recording system for a visitor of a business processing counter, such as a hospital, a bank, a ticket counter, etc., who collects cash etc. facing a customer, a computer program and a human detection unit used therefor, and a combination of the computer program and the human detection unit The present invention relates to a construction kit for a visitor recording system.

  At hospitals, pharmacies, banks, train stations, ticket counters, etc., counters (hereinafter referred to as “business processing counters”) are installed to carry out paperwork such as service reception and cash receipt (payment etc.) in front of customers. ing. During business hours, the customer will visit the processing counter continuously, and the staff of the counter will receive a response. At that time, trouble is likely to occur in the case of hospitals and pharmacies because they have failed to receive medicines or receipts, or in the case of cash counters, they have changed or forgot to receive the change, etc. It is the case that the customer who left the counter comes back again. In addition, when a counter clerk leaves the seat, there may be a criminal act such as illegal transaction operation, change of money or removal of counter display items.

  Therefore, as a system that monitors such counter business, for example, as a monitoring system for preventing illegal transactions at a bank window, proximity sensors detect the seating of both the transaction visitor at the window and the operator inside the window, and trade Patent Document 1 discloses a system for recording a situation.

JP, 2009-104470, A JP, 2011-165107, A JP, 2013-074532, A JP, 2017-005403, A JP, 2009-105526, A

However, the proximity sensor used in the system of Patent Document 1 is an element only capable of detecting the presence or absence of an object within a certain distance range, and causes the following problems.
(1) Since a reaction is made even when an object is accidentally placed in front of the proximity sensor or a person who is not a person or is blocked by a person who is not used at the window, useless recording due to false detection is likely to be performed. In addition, in order to prevent such false detection, a mechanism (for example, an infrared sensor, etc.) for detecting that the object being detected by the proximity sensor is certainly a visitor of the window is also required. After all, the configuration has to be complicated.

On the other hand, in the crime prevention system etc., the camera imaging of the monitoring area is continuously performed, and the technique of starting the recording when the object to be captured in the imaging view has a movement is generalized (for example, patent documents 2 to 5). However, this method has the following various problems in recording the visitor's interaction at the business processing counter:
(2) When a distant moving object is reflected in the field of view of a camera for photographing a visitor at a counter, it is easy to mistakenly record an object that is not a visitor. In addition, it is necessary to complicate an image processing program for detecting and identifying a distant moving object and a visitor.
(3) Because the visitors in front of the counter have smaller movements except when visiting and leaving, during that time, if there is a movement in the background of the visitor, it will be misjudged as leaving of the visitor and recording will stop It is easy for trouble to occur.
(4) There is a possibility that the recording may be erroneously operated in response to a moving body other than a person.
(5) Installing a large number of cameras in the target area so that people around the counter, including visitors, can be traced not only increases the cost of the imaging infrastructure, but also corresponds to work monitoring in the workplace In some cases, it can not be adopted because there is a concern.

  Moreover, in order to solve the problem of the above (4), a method of detecting a moving body by infrared imaging has also been proposed (Patent Document 5), but the remaining problems are not unsolvable as well. .

  The object of the present invention is to provide a simple and inexpensive configuration, while being able to reliably detect a visitor of a business processing counter from other moving objects or stationary objects, and to detect the behavior of the visitor at the counter and the business processing counter A visitor recording system capable of recording the exchange status of goods, money, etc. without waste, construction of a computer program and a human detection unit used therefor, and a visitor recording system combining the computer program and the human detection unit To provide a kit.

The present invention solves the above-mentioned problems in a recording system for visit recording of a business operation counter.
With camera which takes video of the upper surface of office work counter,
A recording device for recording a video shot by the camera;
A Doppler sensor module disposed close to the visitor to such an extent that the visitor's heart rate and / or respiration can be detected for the visitor staying in front of the work processing counter;
Detection target band component analysis means for defining a frequency band covering a signal component derived from at least one of human heartbeat and respiration as a detection target band, and analyzing the strength of the detection target band component in the detection signal of the Doppler sensor module ,
Visit determination means for determining the presence or absence of a visitor in front of the business processing counter based on the strength analysis result of the detection target band component;
And recording control means for causing the recording device to start recording of a captured moving image when it is determined that there is a visitor.

  The Doppler sensor module extracts a Doppler shift component of a reflected wave with respect to a transmission wave consisting of microwaves, and detects a moving object based on the intensity of the Doppler shift component. In the present invention, the visitor in front of the business processing counter is detected by the Doppler sensor module, and the heart rate and / or respiration is detected for the visitor staying in front of the business processing counter. It is characterized in that it is placed as close as possible.

  The Doppler sensor module arranged in this way also has the ability to detect people and moving objects other than people to some extent, but for people who stay in close proximity to the sensor module in front of the paperwork counter, walking or Even if a large movement such as a gesture occurs (for example, even if it is almost stationary), it is possible to easily detect minute body movement derived from the heartbeat or respiration. On the other hand, for a person who is located away from the sensor module, even if he or she responds to a large motion, minute body movement due to heartbeat or breathing is not detected. Therefore, by using this, it is possible to reliably detect whether or not a person has visited in front of the paper work counter from distant people and moving objects other than people.

  Specifically, a frequency band covering a signal component derived from at least one of a human heart beat and respiration is defined as a detection target band, and the detection target band component analysis means detects the detection target band component in the detection signal of the Doppler sensor module. Analyze the strength of Then, the visit determination means determines the presence or absence of the visitor in front of the business processing counter based on the strength analysis result of the detection target band component, and when it is determined that the visitor is present, the recording control means records the captured moving image. Let the recording device start. Thus, the problems mentioned in the section "Problems to be solved by the invention" can be solved as follows.

(1) When an object is accidentally placed in front of the Doppler sensor module or blocked by a non-human mobile object, the Doppler shift waveform of its reflected wave is a component of a frequency band unique to heart rate and respiration (that is, body specific Component is not included, so it is difficult to cause useless recording due to false detection. Also, even with the resolution of a general-purpose, inexpensive Doppler sensor module, it is possible to reliably capture the heartbeats and respirations of visitors at a close distance (especially within 1 to 2 m) before the counter, and the frequency bands and levels of its waveform components are alive. Because it is specific to the person who is using it, the risk of being mistaken for other waveform components is also very small. Therefore, reliable visitor detection and video recording control can be performed by a simple and inexpensive hardware or software configuration based on the Doppler sensor module.

(2) Even when a distant moving object appears in the field of view of the camera for photographing the counter visitor, if the distance from the Doppler sensor module is sufficiently long, the heartbeat and respiration are not detected, and false detection and recording malfunction hardly occur.
(3) The visitors in front of the counter have smaller movements except at the time of visit and at the time of leaving, but since the respiration and heart rate are unchanged, the continuous stay of the visitors in front of the counter can be detected reliably. For example, when there is a movement in the background, there is no fear that the visitor may misjudge that the visitor has left, so that the appropriate recording control can be performed.

(4) It does not react to other than a person who is not a signal source of respiration and heart rate, and does not cause a recording malfunction.
(5) The Doppler sensor module only needs to detect a visitor in front of the counter, and the number of installation can be small (for example, even one is sufficient).

  As described above, the camera can capture the events (especially the receipt of goods and money) performed on the counter with the visitor by photographing the upper surface of the business processing counter, and the evidence capability of recorded data can be obtained. Is enhanced. In particular, if you set up to shoot at an angle where the visitor's face fits within the field of view with the top area of the counter from the inside of the counter, not only exchange on the counter, but who the visitor at that time was Identification is also possible. On the other hand, the article video (such as medicine bags and insurance cards handed by the hospital, bank passbook, cash card, etc.) exchanged on the paperwork counter contains visitor specific information (eg, name, breakdown of medicine, etc.) In particular, even if the configuration does not reflect the face or body of the visitor, it is often possible to identify who the visitor is. Therefore, it is of course possible to set the face and body of the visitor outside the field of view and to take a camera picture mainly of events exchanged on the upper surface of the paper work counter. Furthermore, even if the face of the visitor is out of the field of view, it is possible to similarly identify the visitor because the hand and a part of the clothes are photographed.

  Next, by setting the detection target band for the presence or absence of a visitor to cover 30% or more (preferably 50% or more) of the frequency range of 0.1 Hz or more and 3 Hz or less, a general person can be detected. Partially cover at least one of the respiratory frequency band (0.2 Hz to 0.5 Hz) and the heartbeat frequency band (0.5 Hz to 2 Hz), and due to large steep body movements such as gestures and walking Since the frequency band can be reliably separated, it is possible to improve the determination accuracy of the presence or absence of the visitor.

  Although many methods for measuring the respiration rate and heart rate using the Doppler sensor module have been proposed, in the case of the present invention, the intensity of the detection target band component in the detection signal of the Doppler sensor module is analyzed. Therefore, it is sufficient to be able to judge whether the object in front of the counter is a visitor (person) or not, and it is necessary to distinguish and detect respiration and heartbeat in particular, or to identify a detailed respiration rate and heart rate There is no. In particular, if the presence or absence of a visitor is determined based on the representative value (for example, the average value) of the strength of the waveform of the detection target band set, even an inexpensive microprocessor or the like having a relatively low processing speed is sufficiently sufficient. Real-time determination can be performed.

  In addition, although it may be configured to selectively detect only one of respiration and heartbeat, it is possible to distinguish between respiration and heartbeat in particular by utilizing a component of a band that includes both respiration and heartbeat. Waveform intensity analysis can also be performed. In this way, even if the signal strength of either the respiration or the heart beat is insufficient, the presence or absence of the visitor can be determined without any problem if the other signal strength can be secured. In particular, since the heartbeat component with a small amplitude is easily concealed by layering and the like, in this case, the detection accuracy can be significantly improved even in the winter season and the like by using a component of respiration with a larger amplitude. Specifically, the detection target band may be set to include a frequency range of 0.3 Hz or more and 1 Hz or less (desirably, 0.2 Hz or more and 1.5 Hz or less). In addition, by excluding the signal component out of this band as much as possible, it is possible to make it difficult to cause a malfunction associated with detecting a motion other than the heartbeat and the respiration.

  The detection target band component analyzing means comprises a band pass filter for extracting the detection target band component from the waveform of the detection signal, and a passing waveform signal strength evaluating means for evaluating the strength of the passing waveform signal of the band pass filter. It can be configured. In this case, the visit determination means makes the determination based on the strength evaluation result of the passage waveform signal. By analyzing the intensity of the band pass filter passing waveform of the detection target band component, it is possible to easily and reliably specify the presence or absence of the body movement component derived from the heartbeat or the respiration. The band pass filter may be configured as an analog filter circuit, but since the detection target band is set in the low frequency region as described above, the digital filter can be easily configured even on inexpensive hardware that does not use a DSP or the like. Also, it is possible to be sufficiently software-embedded on a general purpose microprocessor (such as PIC) having a low clock frequency.

  As another method, the detection target band component analysis means performs Fourier transform processing on the waveform of the detection signal to generate frequency spectrum information of the detection signal, and the detection target band in the frequency spectrum information It can also be configured to include a detection target band spectrum strength evaluation means for evaluating the spectrum strength of In this case, the visit determination means makes the determination based on the evaluation result of the spectrum intensity of the detection target band. In this method, the sampled detection signal (Doppler shift component) is subjected to Fourier transform processing to convert it into frequency spectrum information, and the spectrum intensity of the detection target band is analyzed to detect the presence or absence of body motion components derived from heart beat or respiration. It can be easily and reliably identified. The Fourier transform processing means may be configured by a dedicated IC or the like, but since the detection target band is set in the low frequency region as described above, it can be sufficiently incorporated as a software component on a general purpose microprocessor with a low clock frequency. Is possible. In this case, in terms of processing, the fast Fourier transform is advantageous in realizing an inexpensive system configuration with a small amount of calculation.

  Next, the visit determination means can be configured to determine that there is a visitor only when the strength analysis result of the detection target band component continues the human detection state for a predetermined time or more. Since visitors visiting the business processing counter always stay in the area in front of the counter detected by the Doppler sensor module for more than a certain period of time, detection of heart rate and respiration continues without interruption. On the other hand, passers-bys who have no particular need, such as passing just in front of the counter, become a flow that disappears once the heartbeat and respiration signals are detected. Therefore, with the above configuration, it is possible to distinguish and detect the true visitors of the paper work counter, and to reliably record it.

  Further, the visit determination means can be configured to determine that the visitor has left when the intensity analysis result of the detection target band component shifts from the human detection state to the human non-detection state and elapses for a predetermined time or more. . In this case, the recording control means can be made to stop the recording of the photographed moving image on the recording device in response to the visitor's leaving determination. As a result, the visitor is actually staying in front of the counter when, for example, the visitor stinks down and is temporarily removed from the detection area of the Doppler sensor module or disconnected due to the influence of noise or the like. Even if the recording is interrupted unnaturally, the problem can be prevented. In this case, if the recording apparatus includes recording data storage means for storing the recording data in association with the recording date information whenever recording of the captured moving image is interrupted, the temporary detection interruption as described above Even when a problem occurs, it is possible to record and manage the visit record of the same person as one recorded file uniquely corresponding to the person and visit date and time, and it is necessary to record and manage the recorded record even if it is necessary later. Easier to search for files.

  Further, in the visitor recording system according to the present invention, the monitor displaying the video being shot by the camera and the shooting moving image based on the video being shot are being recorded on the monitor when the video is recorded by the recording device. And recording indicator display means for displaying a recording indicator indicating that. When it is found that a problem has occurred in exchange at the counter after the visitor leaves, the recorded video according to the present invention occupies an important position as a proof for solving the problem. Therefore, the interest of the clerk at the clerk who takes a visit to a visitor while utilizing the present invention is to concentrate on whether or not the moving image in the interview is properly recorded. Therefore, by installing the above monitor at a position where it can be seen by the clerk, the clerk can easily grasp whether the recording of the visitor is properly performed based on the presence or absence of the recording indicator. It is particularly preferable to arrange the monitor diagonally in front of or to the side of the clerk in charge of dealing with the visitor across the paperwork counter.

  Since the recording indicator is displayed on the monitor visible to the clerk, the Doppler sensor module (or the human detection unit described later) does not need such a display means during recording, and the Doppler sensor module is installed at a position visible to the clerk There is no need. In this case, providing the Doppler sensor module in a position as inconspicuous as possible to the visitor is advantageous because the visitor is less likely to be distrusted. For example, if it is installed on the lower surface of the top of the counter at the edge of the desk facing the visitor, it is difficult for the visitor to understand the installation of the Doppler sensor, and the distance between the sensor and the visitor approaches. Detection of the presence or absence of visitors also becomes easy.

  Next, the Doppler sensor module comprises an output unit for the microwave transmission wave, a reception unit for the reflection wave formed by the transmission wave being reflected by the moving body, and a detection unit for detecting the Doppler shift waveform component of the reflection wave. Analog circuit unit, A / D converter that generates digital waveform information by converting the Doppler shift waveform extracted by the detector into digital form, I / O unit to which digital waveform information is input, and analysis of digital waveform information Then, the ROM that stores the moving body determination program that determines the presence or absence of the moving body, the RAM that forms the execution area of the moving body determination program, and the moving body determination program are executed. And a microprocessor unit provided with a CPU. At this time, a part of the program storage area of the ROM is configured as a programmable read only memory (PROM) area that allows external write processing, and a program for realizing functions of detection target band component analysis means and visit determination means The program can be written and stored in the PROM area in a readable form by the CPU, and the CPU can be configured to execute the moving object judging program in a form incorporating the function implementation program and output the judgment result from the judgment output port.

  As in the above configuration, if the Doppler sensor module is provided with a microprocessor unit serving as a signal processing unit, and part of the ROM serving as the program storage area is configured with a PROM, detection target band component analysis means (and The function implementation program of the visit determination means can be additionally stored by externally writing the PROM area. By this, originally, presence or absence of a moving body is determined based on the intensity of the entire band of the A / D converted Doppler shift waveform, and detection is performed without adding any hardware component around the Doppler sensor module. The visitor recording system according to the present invention can customize the operation of the Doppler sensor module so that the presence or absence of a visitor can be determined in a form reflecting the analysis result specialized for the target band component (that is, the analysis result of the presence or absence of respiration or heartbeat). The main part of can be realized with an extremely simple configuration.

  In addition, a Doppler sensor module, a USB (Universal Serial Bus) interface for transmitting the determination result by the Doppler sensor module to the outside, a unit-side USB port for connecting a USB communication line to the USB interface, and a USB port The human body detection unit can be configured as a USB target device by integrating a housing having a connection opening portion and a Doppler sensor module and a USB interface. When the video recording system of the present invention is constructed using this, the camera and the video recording apparatus are connected to a computer having a computer side USB port and functioning as a USB host device, and a function realization program of video recording control means is installed. Furthermore, connect the above human detection unit to the USB port on the computer side via the USB communication line. The computer acquires the determination result from the human detection unit by USB communication, and performs the recording control of the captured moving image by the recording device in accordance with the execution of the function realization program of the recording control means.

  According to this configuration, the human detection unit including the Doppler sensor module and functioning as the detection target band component analysis means and the visit determination means is configured as a USB target device. The visitor recording system of the present invention can be easily realized simply by installing the function realization program of the recording control means in a general-purpose computer equipped with a USB port and connecting the human detection unit together with the camera and the recording device via USB. .

  A display unit indicating the recording operation state of the recording device can be provided at a visible position on the housing of the above human detection unit. When the clerk at the business processing counter can not monitor the recording status during interviews, the display status of the display unit of the person detection unit near the hand easily grasps whether the recording of the visitor is appropriately performed or not. can do. The recording control state uniquely corresponds to the determination output state of the visit determination means of the human detection unit, and the control output of the display unit is internally controlled by internally feeding back the determination output in the human detection unit. It is also possible in principle to have an arrangement that completes autonomously. However, this makes it necessary to incorporate a mechanism for display control separately from the Doppler sensor module into the human detection unit, and makes the human detection unit complicated.

  Therefore, noting that the human detection unit is configured as a USB target device, adopting the following configuration using the USB communication function makes it possible to greatly simplify the drive control system of the display unit. That is, the display unit described above (with the Doppler sensor module) is connected to the USB interface, and when the recording device is recording, the computer serving as the USB host device transmits the control signal transmitted via the USB communication line By receiving, the display unit is driven and controlled to a display state indicating that recording is in progress. That is, signal data for display control is transmitted by USB communication from the computer side to the USB interface on the human detection unit side, and drive control of the display unit connected to the USB interface is performed to control display in the human detection unit There is no need to provide a mechanism, and a simple configuration can be maintained. In particular, when the USB communication line is configured by a USB cable capable of supplying a power supply voltage, the power supply circuit of the display unit (and consequently the power supply circuit of the Doppler sensor module) can be excluded from the human detection unit, further simplifying the human detection unit And, weight reduction and miniaturization are possible.

  In addition, the casing of the human detection unit has a flat bottom surface and a size and shape that can be grasped so as to be covered by the palm from above with a resin material capable of transmitting microwaves output from the Doppler sensor module It can be configured to slide on an office work counter. Such a human detection unit has an appearance similar to a mouse which is an input device placed on a business processing counter, and can alleviate a visitor's sense of discomfort or disbelief due to recording monitoring.

  The type of computer that can be adopted in the present invention is not particularly limited, and for example, a general personal computer can be adopted. On the other hand, it is also possible to configure the computer as a tablet computer including a monitor for displaying an image being captured by a camera, and a touch panel input unit overlapped with the monitor. And when the imaging | photography moving image based on the image | video in imaging | photography is recorded by the video recording apparatus, the recording indicator display means which displays the recording indicator which shows that it is recording on a monitor can be provided. By installing the above-mentioned tablet computer in a position where it can be seen by the attendant, the attendant can easily grasp whether the recording of the visitor is properly performed.

  Further, in the visitor recording system of the present invention, there is provided a base portion installed on the top surface of the top plate of the office work processing counter, a post portion having a lower end coupled to the base portion so as to rise upward, and A camera stand may be provided with a head coupled to the upper end. The above-mentioned camera can be attached to the head so as to form a field of view over the top surface of the top plate. The occurrence of problems at the paper-work counter is often concentrated on misinterpretation of the goods exchanged on the counter, forgetting to hand over, errors in the amount of money, and the like. If the camera stand of the above configuration is used, the state of the top surface of the top of the paperwork counter can be photographed from a short distance, and events on the top surface of the top (especially, identification information of the individual to whom goods and money belong) You will be able to grasp accurately and easily.

  In addition, when placed on the top of the counter, the outer shape of the stand consisting of the base, post and head becomes similar to a lamp stand for lighting, making it difficult for the visitor to realize that the camera is incorporated. You can mitigate the distrust effectively. In this case, by attaching an illumination light source that illuminates the top surface of the top plate together with the camera to the head portion, the camera stand will also be used as a real electric stand, making it even less likely for visitors to be aware that the camera is incorporated. Not only that, but the top surface of the tabletop is illuminated by a light source, which makes it possible to record sharper moving images.

  Also, by placing the base on the top of the top of the business processing counter and making it movable, the camera installation position can be easily optimized so that a field of view most suitable for grasping events on the top of the top can be obtained. At this time, when the clerk at the counter can refer to the above-mentioned monitor at hand etc., the installation position of the camera position can be easily optimized while confirming the field of view on the monitor.

  In addition, the support portion of the camera stand has a cylindrical outer shape, and is capable of bending deformation in a direction intersecting the axis and twisting deformation around the axis, and a flexible tube capable of holding the deformed shape. Can be configured. This makes it possible to three-dimensionally adjust the position of the camera attached to the head based on the deformation of the flexible tube. As a result, even when the base portion is positioned in a space (for example, either side to the left or right of the top plate area in front of the visitor) on the paperwork counter that hardly disturbs the visitor or the attendant, It becomes possible to facilitate optimization.

  When using the camera stand as described above, the camera optical axis and the upper surface of the table can be used to make the image on the table as easy to see as possible because the base is arranged on the table. The angular separation from the normal to should be as small as possible. Then, in the camera attached to the camera stand, it is desirable that the top surface of the top plate of the business processing counter is within the imaging field of view, and the face of the visitor is captured at an angle which is outside the imaging field of view. As a result, the face of the visitor does not appear in the video, and it is impossible to identify the visitor's face directly from the video. In this case, this problem can be easily solved by providing another camera for photographing the face of the visitor separately from the camera for photographing the top surface of the table. However, with the following configuration, it is possible to easily incorporate the information on the visitor's face into the captured moving image while focusing on capturing the event on the counter top surface without having to add a camera. That is, the photographing auxiliary mirror is disposed at a position where the reflected image of the visitor's face can be visually recognized in the photographed image of the camera on the top surface of the top of the business processing counter. It is the face of the visitor who has flipped left and right into the mirror that is captured in the movie, but when a problem arises, the visitor knows if the face on the mirror in the movie is himself Information that is sufficient for

  The above-described function implementation program is installed in a computer to cause the computer to function as the recording control means of the visitor recording system of the present invention. For example, when providing a human detection unit as a USB device to a user, it has the detection unit and a recording medium (for example, a CD-ROM or a USB memory etc.) storing the above computer program in a computer readable state. A visitor recording system construction kit can be configured. A user can enjoy the function of the visitor recording system promptly by installing the above computer program from the attached recording medium to the owned computer and connecting the human detection unit. In this case, the camera used for the visitor recording system of the present invention can be a USB camera connected to the computer side USB port of the computer, and the USB camera can be further included in the visitor recording system construction kit. . The above computer program may be downloaded and installed by communication means such as the Internet.

  The details of the operation and effects of the present invention have already been described in the section "Means for Solving the Problems", and therefore will not be repeated here.

BRIEF DESCRIPTION OF THE DRAWINGS The top view which shows typically the installation example of the visitor recording system concerning 1st embodiment of this invention. Similarly a front view. The perspective view which shows an example of the installation method of a camera. The schematic diagram which shows the setting example of a camera imaging | photography angle and a visual field. The front view, top view, and rear view which show the structural example of a person detection unit. FIG. 2 is a block diagram showing an example of the electrical configuration of the visitor recording system of FIG. 1; FIG. 7 is a block diagram showing the details of the configuration of the human detection unit of FIG. 6; The figure which shows the concept of the band pass filter processing of the detection signal of a Doppler sensor module. The figure which shows an example of the intensity analysis of the waveform after band pass filter processing. The figure which shows the concept which performs intensity | strength analysis of the detection target band component of the frequency spectrum produced | generated by Fourier transformation. The flowchart which shows the flow of the 1st example of person detection processing. The flowchart which similarly shows the flow of a 2nd example. The figure which shows notionally the memory content of a video recording data memory | storage part. The flowchart which shows the flow of record control communication processing. The top view which shows typically the example of installation of the visitor recording system concerning 2nd embodiment of this invention. FIG. 16 shows two views of a camera stand used for the system of FIG. 15; The fragmentary sectional view which shows the structural example of a flexible tube. The front view of the system of FIG. The same side view. The front view of the tablet computer used for the system of FIG. FIG. 16 is a block diagram showing an example of the electrical configuration of the visitor recording system of FIG. 15; The figure which shows the monitor display state when a visitor is absent. The figure which shows the monitor display state in moving image recording when a visitor visits. The figure which shows the moving image frame when the upper surface of the office work processing counter is image | photographed from diagonally upward with the example of a correction | amendment. The side view which shows the example which integrated the illumination light source in the camera stand.

Hereinafter, embodiments of the present invention will be described based on the attached drawings.
Embodiment 1
FIG. 1 is a plan view schematically showing a first configuration example of a visitor recording system of the present invention, and FIG. 2 is a front view of the same. The visitor recording system 500 is for recording a moving picture of a visitor VP of a business processing counter (for example, a reception counter of a hospital: hereinafter simply referred to as a counter) 10 by the camera 2 and recording and recording the same. The clerk WP deployed inside the counter 10 performs administrative processing such as medical examination reception, medical examination call, medication (or issuance of prescription), accounting, etc. for the visitor VP. In the counter 10 of many hospitals, the height of the visitor handling unit 10a is about 100 to 110 cm, and the height of the working unit 10b of the seated attendant WP is set to about 70 to 90 cm. Then, a personal computer (hereinafter referred to as "PC") 50 for office work processing is placed under the working unit 10b, and a keyboard 57, a monitor 56 and the like are connected to the PC 50 on the right side of the clerk WP at the working unit 10b. A mouse 58 is arranged. A recording device (symbol 62 in FIG. 6) of the visitor VP is connected to or built in the PC 50.

  The camera 2 is a so-called WEB camera configured as a USB target device, and receives power supply voltage supply from the PC 50 which is a USB host device, and operates to receive image pickup control signals from the PC 50 and transmit image data to the PC 50. FIG. 3 shows an example of the camera 2. The camera 2 is attached to an arbitrary attachment object OB (for example, a shelf or a hanger stand) by a clip 26 and used. As shown in FIG. 4, the camera 2 can see the upper surface of the business processing counter 10 (visitor handling unit 10a) where exchange of cash MN, medicine, etc. is made, and the upper body including the face FC of the visitor VP and It is desirable to adjust the installation position so that the entire hand is within the field of view.

  In order to obtain such a photographed image, the camera 2 is not placed on the visitor handling part 10a of the counter 10, but as shown in FIG. 1 and FIG. The visitor VP is 3 to 10 degrees in the front or right and left at a position slightly above the line of sight (the distance from the visitor VP is 1.5 to 2 m and the height is 1.1 to 1.5 m) It is preferable to arrange so as to be able to shoot from an inclined direction (in FIG. 1, reference symbol CA represents the shooting field of view of the camera 2). Here, the camera 2 is set so as to be inconspicuous from the visitor VP using the arrangement OB behind the clerk WP. At this time, the camera 2 can also be covered with a cover 2 or the like. The recording apparatus may be disposed in the backyard of the counter 10 or in another room.

  Next, the configuration of the Doppler sensor module 3 is well known, transmits microwaves as a detection wave to a detection area, receives a reflected wave from a moving body, and also generates frequency components derived from the Doppler shift of the reflected wave (Doppler shift component) To detect the motion of the moving body. The frequency of the transmission wave is in the microwave band (GHz band), while the Doppler frequency indicating human movement etc. is in the low frequency band of 0.2 to several tens Hz, and the reflected wave is a frequency modulated wave by Doppler shift. Can be seen. Therefore, in a general Doppler sensor module, a method of orthogonally detecting a reflected wave to extract a Doppler shift component is employed.

  As shown in FIG. 5, the Doppler sensor module 3 is mounted on a substrate 20 and further accommodated in a housing 1 c to form a human detection unit 1. As will be described later, the human detection unit 1 is configured as a USB target device, and a connector 1n forming a USB port is formed so as to be opened, and a connection plug 1p of the USB cable 1w is inserted here.

  The housing 1c has a flat bottom surface 1b made of a resin material (for example, ABS resin, PBT resin, etc.) capable of transmitting microwaves output from the Doppler sensor module 3, and has dimensions and dimensions that can be grasped so as to be enclosed by the palm from above. It has a shape (for example, height 3 cm to 5 cm, width 4 cm to 7 cm, length 5 cm to 8 cm), and it is possible to slide and move on the visitor corresponding portion 10a (FIG. 1) of the counter 10 at the bottom 1b. It is done. The appearance is very similar to the mouse, which is an input device placed on the counter 10, and contributes to alleviating the discomfort and distrust of the visitor VP due to the recording monitoring.

  The Doppler sensor module 3 transmits microwaves in the direction of the main surface normal NL of the module package, and the transmission region of the microwave, that is, the detection area DA is the main surface normal NL in plan view. It has a fan-shaped spread as a central axis. With regard to the sensitivity, in FIG. 1, for the visitor VP located at a distance (for example, within 0 cm or more and 50 cm or less from the front end edge of the visitor handling unit 10 a) that can receive business processing correspondence across the counter 10. In order to be able to detect movement, in more detail body movement derived from heart beat or respiration (hereinafter, also collectively referred to as “survival fine movement” when both are collectively referred to), it is arranged close to the visitor VP to the counter 10 It is done. And in order to selectively recognize only the visitor VP to the counter 10, the sensitivity is 3 m or more, more preferably 2 m or more in the central axis direction of the detection area DA of the Doppler sensor module 3 It is desirable that the detection ability of the person who is located is selected to such an extent that the detection ability disappears (or becomes smaller than a set threshold).

  In the present embodiment, NJR 4265J1 (transmission wave frequency: 24.25 GHz) manufactured by New Japan Radio Co., Ltd. is used as a commercial product of the Doppler sensor module 3 satisfying the above preferable conditions. In FIG. 5, the spread angle φ of the detection area DA in plan view is about 40 ° on the left and right with respect to the major surface normal NL. In order that the Doppler sensor module 3 detects a front visitor VP in a state where the Doppler sensor module 3 is placed on the counter 10 as shown in FIG. 1, as shown in FIG. It incorporates so that the principal surface normal NL of 3 and the bottom face 1b may become parallel. Then, by appropriately sliding or rotating the housing 1 c on the counter 10, the direction of the detection area DA can be adjusted to be optimum for the detection of the visitor VP. Further, as shown in FIG. 1, the detection area DA has strong directivity on one side (side on which the patch antenna etc. are mounted) of the main surface normal line NL, and the spread to the opposite side is very small. Therefore, by directing the detection area DA to the visitor VP side, there is little concern that the alive movement of the person in charge WP behind will be misdetected.

  Next, FIG. 6 is a block diagram showing the entire electrical configuration of the visitor recording system 500 (note that the power supply circuit portion is omitted). First, the PC 50 has a well-known configuration, and mainly performs hardware processing on a microprocessor including a CPU 51, a RAM 52 serving as a program execution area, a ROM 54 storing a program, an input / output unit 53, and a bus 55 interconnecting them. Prepare as. A built-in hard disk drive (HDD) 59, a CD-ROM drive 60, a calendar clock 58 for clocking time and date, a display control unit 56c, and a network interface 65 are connected to the input / output 53. The monitor 56 is connected to the display control unit 56c. Also, access to the Internet 100 is enabled via the network interface 65, the hub 66 and the broadband router 67.

  The input / output unit 53 is also connected with a USB controller 64 for causing the PC 50 to function as a USB host device. The USB controller 64 is provided with a plurality of connectors (CN) serving as device connection ports. On the other hand, each USB target device is implemented with a USB interface (USB I / F) and has a connector (CN) connected thereto. As is well known, by connecting this connector and the connector on the PC 50 side via a USB cable, the host device PC 50 recognizes individual USB target devices.

  The USB controller 64 and the USB interface of each target device function as a communication control unit according to the USB communication protocol, select the target device to be the communication destination by address specification from the PC 50 (host device) side, and process by bidirectional serial communication Is done. In addition, the power supply voltage necessary to drive the target device is also supplied via the USB cable. It is also possible to connect the host device and the target device by wireless USB by interposing a wireless module attached to the USB port (or directly coupled to the USB interface).

  As a specific target device, a recording device 62, a USB memory 63, a camera 2, and a keyboard 57 are connected. Also, a plurality of connectors (CN) are distributed from the USB hub (UH) connected to the USB interface in the keyboard 57, and in accordance with the USB standard, cascade connection of other target devices is possible. In the present embodiment, the mouse 58 and the human detection unit 1 are connected here (however, the mouse 58 and the human detection unit 1 may be directly connected to the connector (CN) on the PC 50 side).

  FIG. 7 is a block diagram showing details of the internal configuration of the human detection unit 1. The Doppler sensor module 3 includes a high frequency circuit unit (Doppler sensor RF circuit) 38 that generates a microwave as a detection probe, and is connected to a transmitting antenna 37t and a receiving antenna 37r configured by a patch antenna or the like. The high frequency circuit section 38 has a transmission circuit of transmission frequency, which is amplified and transmitted from the transmission antenna 37t to the object, and the reflected wave is received by the reception antenna 37r. As described above, the reflected wave has a waveform in which the transmission wave is modulated by the Doppler shift component, but in the high frequency circuit unit 38, the input reflected wave is phase shifted 90 ° by the in-phase wave (Ich) of the input reflected wave The Doppler shift waveform which is a modulation component is extracted by generating an orthogonal wave (Qch) and inputting it to an orthogonal detection circuit (orthogonal detection unit (MUX)) 40 composed of a multiplier via high frequency amplifiers 39 respectively. . These blocks constitute an analog circuit portion 3 a of the Doppler sensor module 3.

  On the other hand, the Doppler sensor module 3 is provided with a microprocessor unit (digital circuit unit) 3 d for performing signal processing. The microprocessor unit 3d converts the detection waveform (detection signal) of the Doppler shift component from the quadrature detection circuit 40 into a digital signal by converting the CPU 31, the RAM 32, the ROM 34, the PROM 36, the input / output unit 33, the bus 42 connecting them, And an A / D converter (conversion unit) 41 to be input to the unit 33. The signal processing program is stored in a read only memory (ROM) unit, but the program storage area of the ROM unit is an area of the ROM 34 which can not be rewritten and an area of the PROM 36 which can be rewritten or written. And is composed of.

  For example, the ROM 34 is a mask ROM, which is a standard program that performs noise removal of a detected waveform and performs strength evaluation in all frequency bands covering the moving object speed range defined in the specification to determine the presence or absence of moving objects. Is mounted non-erasable. This is to prevent the moving object detection / output function disclosed in the product specification of the Doppler sensor module 3 from being lost due to erroneous program rewriting by the user.

  On the other hand, the PROM 36 is configured by an EPROM (Erasable Programmable ROM) or an EEPROM (Electrically Erasable Programmable ROM), and a higher voltage is applied than when data is read, or the content is erasable by irradiation of ultraviolet light. Rewriting is possible by voltage application. In the area of this PROM 36, a band pass filter module 36a and a human detection / determination program 36c are stored. These two programs constitute detection target band component analysis means, passing waveform signal strength evaluation means and visit determination means.

  At the beginning of the operation control program of the Doppler sensor module 3, an execution specification routine for specifying which program module is to be used for processing (program name or program storage address) is placed. This routine is written in the PROM 36, In the initial state (the state at the time of shipment from the factory), contents for specifying a standard program in the ROM 34 are written. Then, in the present embodiment, the contents thereof are rewritten to the contents specifying the band pass filter module 36a and the human detection determination program 36c, and the unnecessary routine of the standard program in the ROM 34 is not executed (for example, Routines that do not interfere with the implementation of the present invention, such as noise removal processing, are programmed to be inherited as they are.

  On the other hand, the RAM 32 functions as a program execution area, takes in input waveform data into the waveform buffer memory 32a at a predetermined sampling time (for example, 5 seconds or more and 20 seconds or less), and causes the waveform processing memory 32b to detect moving objects. Perform a judgment operation. The determination result is output from the determination output port 35 of the input / output unit 33. Specifically, the determination output port 35 has a high (H) level (for example, +3 V) when the determination is made that there is a moving body, and becomes open when it is determined that there is no moving body. In the present embodiment, for example, the judgment output port 35 is pulled up via the additional resistor 35r in order to output the binary with the moving body at H level and the non-moving body at L level (or vice versa).

  The band pass filter module 36a defines, as a pass band (detection target band), a frequency band that covers a signal component derived from at least one of human heartbeat and respiration for the detected Doppler shift waveform. The respiratory frequency band of a general person is about 0.2 Hz to 0.5 Hz, and the heartbeat frequency band is about 0.5 Hz to 2 Hz. For example, if the detection target band is set to cover 30% or more (desirably 50% or more) of the frequency range of 0.1 Hz to 3 Hz, at least one of respiration and heartbeat can be partially covered. Also, it can be reliably separated from the frequency band that covers large and sharp body movements such as gestures and walking.

  In this embodiment, in order to further improve the detection accuracy of the visitor VP by heart beat or respiration, as shown in FIG. 8, the component of the band including both the respiration and the heart beat is used to distinguish the respiration and the heart beat. It is made to do waveform strength analysis without doing. Specifically, the detection target band is set to include a frequency range of 0.2 Hz to 1.5 Hz. For example, the lower limit of the pass band is 0.1 Hz to 0.2 Hz, and the upper limit is 1.5 Hz or more. Determined to be 2 Hz or less. Then, as a passing waveform, one obtained by mixing and extracting a cardiac component and a respiratory component from an input quadrature detection waveform is obtained. In this way, even if the signal strength of either the respiration or the heart beat is insufficient, the presence or absence of the visitor VP can be determined without any problem if the other signal strength can be secured. In particular, although the component of the heartbeat having a small amplitude is easily concealed by layering, etc., the detection accuracy is significantly improved even in winter, etc. by utilizing the component of the respiration having a larger amplitude.

  The human detection determination program 36c calculates the intensity (amplitude) of the waveform that has passed through the band pass filter, and whether or not there is a visitor on the counter 10 depending on, for example, whether the intensity exceeds a predetermined threshold. Determine As shown in FIG. 9, when the amplitude A of the sampled passing waveform is represented by a function A (t) of time t, the average amplitude Am mathematically represents the time average value A0 of A (t) as the amplitude center Can be calculated as a value obtained by integrating | A (t) −A 0 | for the sampling period T and dividing the integrated value by T. The digital data processing is as shown in the flowchart of FIG.

  First, waveform sampling is performed in S1 (the number of data points is n), and digital band pass filter processing in the above-mentioned band is performed on the sampled waveform data in S2 (the processing content is known, so detailed description I omit it). In S3, the sum (ΣAi) of the amplitude level value Ai of each data point of the obtained passing waveform is determined, and this is divided by the number of data points n in S4 to determine the amplitude center A0 (= ΣAi / n). Subsequently, in S5, the absolute value sum Sd (= Σ | Ai−A0 |) of the deviation of the amplitude level value Ai from the amplitude center A0 is calculated, and divided by the number of data points n in S6 to calculate the average amplitude Am (= Sd / Get n).

At S7, the average amplitude Am is compared with the threshold Amc. If Am> Amc, it is determined that there is a visitor, and the process proceeds to S8, where the output of the determination output port 35 is set to “H” (with people). In the other cases, it is determined that there is no visitor, and the process proceeds to S9, where the output of the determination output port 35 is set to "L" (no people). If there is no end instruction in S10, the process returns to S1 to acquire the next sampling waveform, and the same processing is repeated. In addition to Σ | Ai-A0 | / n, the variance σ ² (= Σ (Ai-A0) ² / n) of the amplitude level value Ai and the standard deviation σ should be adopted as values reflecting the average amplitude Am. You can also. Further, the same determination can be made using deviation from a properly determined reference value such as the amplitude minimum value Amin instead of deviation from the amplitude center A0.

  On the other hand, the presence or absence of a visitor based on the heartbeat or respiratory component can be determined by performing Fourier transform on the orthogonal detection waveform (detection signal) to generate a frequency spectrum and performing spectrum intensity analysis of a detection target band as shown in FIG. Good. In this case, in place of the band pass filter module 36a in FIG. 7, a Fourier transform module (Fourier transform processing means) for obtaining frequency spectrum data from an input waveform, such as a fast Fourier transform (FFT) module 36b in this embodiment, is incorporated. Do.

  The human detection determination program 36c in this case cuts out the section of the detection target band from the frequency spectrum curve obtained by Fourier transform and calculates the average intensity Im within the band, for example, a threshold for which the average intensity Im is predetermined. It is determined whether there is a visitor on the counter 10 based on whether it exceeds Imc (detection target band spectrum strength evaluation means). The process in this case is as shown in the flowchart of FIG.

  First, waveform sampling is performed in S101 (the number of data points is n), and fast Fourier transform processing is performed on the waveform data sampled in S102 (details of the processing are omitted because they are well known). At S103, among the obtained intensity data points of the frequency spectrum, those belonging to the detection target band are extracted (the number is k), and at S104, the sum (= ΣIi) of the extracted intensities Ii is calculated. This is divided by the number of data points k in the band to obtain an average intensity Im (= ΣIi / k).

  At S106, the average intensity Im is compared to a threshold Imc. If Im> Im, it is determined that there is a visitor, and the process proceeds to S107, where the output of the determination output port 35 is set to "H". In the other case, it is determined that there is no visitor, and the process proceeds to S108, where the output of the determination output port 35 is set to "L". If there is no end instruction in S109, the process returns to S101, the next sampling waveform is acquired, and the same processing is repeated.

  Subsequently, referring back to FIG. 6, the recording control software 59a is installed in the HDD 59 of the PC 50. The recording control software 59 a is, for example, recorded on the CD-ROM 61 in a computer readable form and supplied, and can be installed on the HDD 59 by reading by the CD-ROM drive 60. On the other hand, the recording control software 59a can also be downloaded from a download server (not shown) on the Internet 100 and installed in the HDD 59.

  As shown in FIG. 7, the Doppler sensor module 3 of the human detection module 1 is connected to a USB input / output (USB I / O) IC 6. The determination result output output from the determination output port 35 of the input / output unit 33 of the microprocessor unit 3d is input to the USB input / output IC 6 also serving as a USB interface, converted into a USB serial communication signal, and transmitted via the USB cable 1w to the PC 50 Sent to

  Note that the Doppler sensor module 3 has a communication interface (UART interface in the present embodiment) for making it possible to directly take out orthogonal detection waveform output and the like (for example, necessary when measuring heart rate and respiratory rate etc.) to the outside. Tx is a transmitting side, Rx is a receiving side terminal 43), and is connected to the input / output unit 33 of the microprocessor unit 3d. In the present embodiment, it is essential for the determination of the presence or absence of a visitor whether or not the heartbeat or respiration is detected as a living fine motion at a predetermined level or higher, and the specific determination of the respiration rate or the heart rate is not performed. Therefore, the communication interface 43 is not used and nothing is connected to the terminals Tx and Rx. Of course, this communication interface 43 can be omitted (and use of a commercial product of the omitted Doppler sensor module).

  The human detection module 1 which is a USB target device receives the drive power supply voltage VDD of the Doppler sensor module 3 from the USB cable 1 w through the USB input / output IC 6. An LED (hereinafter referred to as a "power receiving LED") 4 forming a power reception display unit is connected to the supply line PL of the drive power supply voltage VDD via the current adjustment resistor 4a, and is light driven when receiving power ( Emitting color is, for example, blue). As shown in FIG. 1, when the detection area DA is directed to the visitor VP, as shown in FIG. 5, the power receiving LED 4 is visible from the clerk WP in the counter 10, such as in front of the upper surface of the housing 1c. Mounted in the

  Also, on the case 1 c of the human detection unit 1, a display unit indicating the recording operation state of the recording device 62 at a position (here, a position adjacent to the power receiving LED 4) visible by the attendant WP The LED 5 is provided with an LED 5 (hereinafter referred to as a "recording LED") that lights up during recording. During recording, the LED 5 (display unit) is connected to the USB input / output IC 6 (USB interface) through the current adjustment resistor 5a, and when the recording device 62 is recording, the PC 50 serving as the USB host device is a USB cable ( It is driven to light by receiving a control signal transmitted via the USB communication line 1w. The LED 5 of the light emission color (for example, red) different from that of the power receiving LED 4 is used during recording.

  When the recording control software 59a is launched, the PC 50 periodically requests the human detection module 1 to transmit the determination result regarding the presence or absence of a visitor. Then, upon receiving the determination that there is a visitor, the moving image data (FIG. 4) of the visitor VP captured by the camera 2 forming the USB target device is acquired. A recording data storage unit 62a is formed in the recording device 62 incorporating a storage device such as a hard disk drive, and as shown in FIG. 13, the moving image data acquired from the camera 2 is obtained from the calendar clock 58 (FIG. 6). It is recorded here in chronological order as recording data associated with the acquired date and time information. The recorded data can be optionally reproduced by selecting a file by the recording device 62, and can be displayed on, for example, the monitor 56 of the PC 50.

  The recording device 62 can be configured as a recording dedicated device having a recording and reproduction function independently of the PC 50. In this case, the recording device 62 receives the notification that there is recorded data from the PC 50, autonomously requests the moving image data from the PC 50, and performs image compression processing based on the standard on the received moving image data to create a recorded file And in association with date and time (calendar clock may be built in the recording device 62 side). In this case, the recording control software 59a may be equipped with a transfer function of moving image data and a function of sending a notification of transmission of recording data to the recording device 62, and a recording file creation function including image compression processing etc. There is no need to incorporate it.

  On the other hand, the recording device 62 may be configured as a simple data storage device by an external HDD or the like, and the recording control software 59a may be constructed as comprehensive recording software incorporating the recording file creation function and the reproduction function. In this case, by providing the recording data storage unit in the built-in HDD 59, the external recording device 62 can be omitted. Also, the recording data storage unit can be formed in a USB memory or the like which is detachably attached to the USB connector of the PC 50.

  The elements necessary for constructing the above visitor recording system 500 in the user environment including the PC 50 are the human detection module 1, the USB cable 1w and the recording control software 59a, and the visitor recording system kit including these as a set It would be convenient if the user could procure by purchasing etc. Further, it is convenient to set the camera 2 of FIG. 3 for a user who does not have a camera separated from the PC 50. Although the recording control software 59a can be attached in the form of the CD-ROM 61 of FIG. 6, the display medium such as a sheet of paper (for example, a paper on which the URL (and the access password) of the software download site is described) , Card, manual, etc .: may be printed on a package, etc.) may be attached. The user may access the server of this URL site from the PC 50 via the Internet 100 in FIG. 6, download the recording control software 59a, and install it on the PC 50.

  FIG. 14 shows an example of a flowchart of recording control communication processing by the recording control software 59a, which is executed by the PC 50 (host device) and the human detection unit 1 (target device) via USB. On the PC 50 side, it is possible to prevent such a defect that a visitor is misjudged as leaving despite the visitor being staying due to false detection derived from moving body factors other than the visitor, irregular movement of the visitor, etc. For this purpose, a first timer T1 for measuring the duration of stay of the visitor and a second timer T2 for measuring the duration of withdrawal of the visitor are incorporated as software. When the process starts, the timer on the PC 50 side resets these timers T1 and T2 at H1.

  Next, in H2, the person detection unit 1 is requested to transmit the determination output of the presence or absence of a visitor. The human detection unit 1 receives this at T1 and transmits the determination output at T2. The PC 50 receives this at H3 and determines the contents at H4. If there is no person, the process returns to H1, and the timer is reset to repeat the process to H4. On the other hand, if there is a person, the process proceeds to H5 and starts counting by the first timer T1. In H6, it is determined whether or not the elapsed time measured by the first timer T1 exceeds the threshold T1c. If it does not exceed the threshold T1c, the process returns to H2 and the following processing is repeated. If it has transitioned to a state without a visitor within the threshold T1c, the process returns to H1 at the judgment branch of H4 in the repetition loop immediately thereafter, and the first timer T1 is reset.

  On the other hand, if the duration of the determination reception with human presence in H6 exceeds the threshold T1c, the determination with presence of a visitor is determined, and the process proceeds to H7 to transmit a recording start instruction to the recording device 62. In response to this, the recording device 62 starts recording of the visitor VP as shown in FIG. In addition, a lighting instruction of the LED 5 during recording is transmitted to the human detection unit 1. The human detection unit 1 receives this at T3 and turns on the LED 5 during recording in FIG.

  In FIG. 1, for example, if the video of the camera 2 is displayed on the monitor 56 of a PC placed at hand, including the recording status display like many crime prevention video recording systems, the clerk WP is the current visitor VP It is easy to check if the recording is working properly. However, in many cases the screen of the accounting software and the patient database is displayed on the screen of the PC 50 arranged on the counter 10, provided that the PC 50 and the monitor 56 are arranged at a position invisible from the clerk WP such as the backyard. The steady grasp of the recording state is difficult. However, with the person detection unit 1 placed right in front of the visitor VP, the person detection unit 1 is provided with the LED 5 during recording, so that the attendant WP always keeps the lighted state of the LED 5 during recording, and recording is normally performed. While gaining a sense of security, you can concentrate on customer service.

  Further, as described above, as shown in FIG. 5, the appearance of the human detection unit 1 is exactly like a mouse, and from the rear end side, a USB cable 1w extends in a form very similar to a mouse. As shown in FIG. 1, if it is connected to the keyboard 56 of the PC 50 in the hand of the staff WP, the human detection unit 1 on the counter 10 (visitor handling unit 10a) Can not be seen (the real mouse 58 is placed on the right side of the keyboard 58 on the working unit 10b lowered by one step), and it is highly feared that this is the human detection unit 1 for video recording monitoring. small.

  Here, it is the human detection unit 1 that performs detection and determination of the presence or absence of a visitor, and recording control is also executed according to the determination result, so the lighting control of the LED 5 during recording is also the microprocessor in the human detection unit 1 It seems at first glance rational that part 3d is in charge. However, since it is the PC 50 that drives and controls the recording device 62 including the failsafe of the erroneous determination as described above, the failsafe processing for the determination interruption is performed to cause the human detection unit 1 to execute the lighting control of the LED 5 during recording. It is necessary to add a function and secure or add an output port for driving the LED in the microprocessor unit 3d, resulting in a very scarce configuration. Furthermore, when recording becomes impossible due to a defect on the PC 50 side (for example, a defect in the recording device 62, lack of capacity, etc.), whether the recording processing is actually performed only by the visitor presence / absence determination on the human detection unit 1 side It can not be determined accurately in the first place. Furthermore, when there is no vacant port in the microprocessor unit 3d or a structure in which the port can not be added is adopted, the addition itself of the LED lighting drive unit may become physically impossible. However, as described above, connecting the LED 5 during recording with the Doppler sensor module 3 to the USB input / output IC 6 in the human detection unit 1 and performing the lighting drive control according to the instruction from the PC 50 solves all these problems. .

  Returning to the flowchart of FIG. 14, after recording is started, the PC 50 monitors whether the visit of the visitor VP is continued. Specifically, at H9, the person detection unit 1 is again requested to transmit the determination output of the presence or absence of a visitor. The human detection unit 1 receives this at T4 and transmits the determination output at T5. The PC 50 receives this at H10 and determines the contents at H11. Next, if there is no person, the process proceeds to H12, and the second timer T2 performs timing. In H13, it is determined whether or not the elapsed time measured by the second timer T2 exceeds the threshold T2c. If it does not exceed the threshold T2c, the process returns to H9 and the following processing is repeated. As a result, even if a person is not temporarily detected in the range less than the threshold T2c, the recording itself is continued without interruption, and the recording file is prevented from being fragmented.

  On the other hand, if it is determined at H11 that there is a human being, the process proceeds to H18 to reset the second timer T2, returns to H9, and repeats the process to H11. That is, if the duration of the determination reception without a person has transitioned to the state with a person before reaching the threshold T2c, the process returns to H9 in the determination branch at H11 in the repetition loop immediately thereafter, and the second The timer T2 is reset and waits until the next no-person state occurs. Of course, the recording still continues during this period.

  If the duration of the determination reception without a person exceeds the threshold T2c at H13, the determination for the absence of a visitor is determined, and the process proceeds to H14 and an instruction to stop the recording is transmitted to the recording device 62. The recording device 62 receives this and stops the recording of the visitor VP. Further, in H15, an instruction to turn off the LED 5 during recording is transmitted to the human detection unit 1. The human detection unit 1 receives this at T6 and turns off the LED 5 during recording in FIG. Furthermore, on the PC 50 side, the date and time information is acquired from the calendar clock at H16, and as shown in FIG. 13, the recording data is stored in the recording data storage unit 62a in association with this. The date and time information to be attached to the recorded data may be acquired from the Internet 100 in the form of a time stamp in FIG.

  For example, in FIG. 1, when the visitor VP once revisits the counter 10 and then revisits and confirms that he / she has not received the medicine or change, the clerk WP searches the recording data while looking at the monitor 56. It is possible to reproduce and easily confirm the facts while watching the reproduced video together with the visitor VP.

  In FIG. 1 (and FIG. 2), for the visitor VP staying in front of the counter 10, the human detection unit 1 (Doppler sensor module 3) to such an extent that at least one of the heartbeat and respiration of the visitor VP can be detected. Are placed in close proximity to the visitor VP. As a result, since the visitors of the counter 10 approach the human detection unit 1 until they reach a close distance as shown in FIG. 1, even if a large movement such as walking or a gesture occurs, the minute derived from the heart beat or breathing It is possible to easily detect natural body movements (living tremors). In addition, for persons other than the visitor who has left the counter 10, even if the Doppler sensor module of the human detection unit 1 responds to a large operation, the living tremor due to the heartbeat or breathing is not detected. By using this, it is possible to reliably detect whether a person VP has visited in front of the counter 10 separately from a distant person or a moving body other than a person. Specifically, among the detection waveform of the Doppler sensor module 3, the component of the frequency band suitable for the above-mentioned alive fine movement extraction is determined as the detection target band, and the strength analysis of the detection target band component makes the visitor in front of the counter 10. It is determined whether or not there is a VP.

As a result, the following effects can be achieved.
(1) When an object is accidentally placed in front of the human detection unit 1 or blocked by a non-human mobile object, the Doppler shift waveform does not include frequency band components specific to living tremor such as heartbeat and respiration, It is hard to happen useless recording by false detection. Further, even with the resolution of the general-purpose and inexpensive Doppler sensor module 3 adopted in this embodiment, the heartbeat and respiration of the visitor VP at a close distance (in particular, within 1 to 2 m) in front of the counter can be reliably captured. Because the frequency bands and levels of the components are unique to a living person, there is very little risk of being misinterpreted as other waveform components. Therefore, reliable visitor detection and recording control can be performed by a simple and inexpensive hardware or software configuration.

(2) Even when a distant moving object appears in the field of view of the camera 2 for photographing the counter visitor VP, if the distance from the Doppler sensor module 3 is sufficiently long, the living tremor such as heart beat or respiration is not detected, and false detection It is hard to produce a recording malfunction.
(3) The visitor VP in front of the counter moves less than the time of visit and leaving, but the respiration and heart rate remain unchanged, so it is possible to reliably detect the continuous stay of the visitor VP in front of the counter It is possible to perform accurate recording control.

(4) It does not react to other than a person who is not a signal source of respiration and heart rate, and does not cause a recording malfunction.
(5) The Doppler sensor module 3 only needs to detect the visitor VP in front of the counter, and the number of installation can be small (even one is sufficient as in FIG. 1).

Second Embodiment
Hereinafter, a second configuration example of the visitor recording system according to the present invention will be described. The same symbols are given to elements that are conceptually common to the first configuration example described in detail in the first embodiment, the detailed description is omitted, and only the differences will be described below.

  FIG. 15 is a plan view schematically showing a visitor recording system 600 according to a second configuration example of the present invention, FIG. 18 is a front view of the same, and FIG. 19 is a side view. In this configuration example, the business processing counter 110 is formed in a desk shape smaller than that used in the first configuration example (see FIG. 1), and the sleeve (on the side of the dominant hand) of the clerk WP is simplified. It is a thing. The visitor handling unit 110a and the lower working unit 10b on the side of the attendant WP are formed in the same manner.

  The computer 250, which is an essential part of the system, is configured as a tablet computer, and is disposed on the work unit 10b of the business processing counter 110 diagonally in front of the clerk WP. FIG. 20 is an enlarged view of the monitor 56 including a backlit liquid crystal display, an LED display, an organic EL display, and the like in a window-like notch 250W formed on the main surface of a flat resin case 250M. A touch panel (input unit) 157, which is disposed in an overlapping manner, is fitted on the monitor 157. Although not shown, a substrate on which the electrical components (see FIG. 21) of the computer 250 are laid out is incorporated on the back side of the monitor 56 in the housing 250M.

  Further, a button input unit 158 is formed on the peripheral portion of the monitor 56 of the housing 250M. Information input necessary for the operation of the tablet computer 250 is performed by the touch panel 157 linked with an icon displayed on the monitor 56 and a soft keyboard, etc., and on the other hand, transmission and reception of e-mail and activation of the Internet browser are performed with one touch. Function of the button input unit 158 is appropriately assigned.

  As shown in FIG. 15, the visitor handling unit 110a of the business processing counter 110 is used to exchange goods (e.g., medicine bag DB) and money MN in the central area. Then, the camera stand 200 to which the camera 202 is attached is disposed in a manner to be close to one side in the width direction with respect to the central region.

  FIG. 16 shows details of the camera stand 200, and the base portion 273 (in FIG. 15, installed on the upper surface of the visitor handling portion 110a (top) of the business processing counter 110) and the base portion 273 upward. And a head portion 270 coupled to the upper end of the support portion 272. The USB cable 202 w connected to the camera 202 passes through the inside of the support portion 272 and is connected to the USB connector CN assembled to the base portion 273.

  The camera 202 is attached to the head portion 270 so as to form a field of view over the top surface of the visitor handling unit 110a, as shown in FIG. As shown in FIG. 16, the head portion 270 has a main body 270 m formed in a horizontally long shape, and the camera 202 is fitted downward to a cover portion 270 c mounted on the lower surface thereof. It is coupled to the support portion 272 in a cantilever manner.

  In addition, the support portion 272 has a cylindrical outer shape, and is configured by a flexible tube which is capable of bending deformation in a direction intersecting with the axis and twisting deformation around the axis and capable of holding the deformed shape. It is done. FIG. 17 shows an example of a flexible tube constituting the support portion 272, which has a structure in which a deformed wire 272a having a S-shaped cross section and a round cross section line 272b are spirally co-wound. The wedge-shaped edges of the adjacent loops of the deformed wire 272a are fitted and integrated in such a manner that the round cross-sectional line 272b is held between them, so that relative sliding occurs with the round cross-sectional line 272b as the core And flexibility is imparted to the entire tube. The outer peripheral surface of the tube is covered with a cosmetic covering tube 272d made of resin.

  The appearance of the camera stand 200 having such a base portion 273, a column 272 and a head portion 270 m is, as shown in FIGS. 18 and 19, a lamp for lighting when placed on the top surface of the counter 110. It is very similar to As a result, it is difficult for the visitor VP to realize that the camera 202 is incorporated, and the effect of effectively relieving distrust is achieved.

  Further, as shown in FIGS. 15, 18 and 19, the person detection unit 201 incorporating the Doppler sensor module is the side of the visitor handling unit 110 a (top board) of the business processing counter 110 facing the visitor VP. Of the lower edge of the As shown in FIG. 15, the human detection unit 201 and the camera stand 200 (camera 202) are connected to the computer 250 via a USB cable (which may be a wireless USB).

  FIG. 21 is a block diagram showing the electrical configuration of the visitor recording system 600 (elements that are conceptually the same as in FIG. 6 are assigned the same reference numerals and detailed descriptions thereof will be omitted. The components of the symbols that appear and do not appear in FIG. 21 mean that they are omitted in the configuration of FIG. In the tablet computer 250, system software, application software, and recording data are stored in a large capacity memory 159 configured by a flash memory or a hard disk drive. Further, the touch panel 157 is connected to the input / output unit 53 together with the button input unit 158 via the touch panel control unit 157 c. On the other hand, the LED is omitted from the human detection unit 201 during recording.

  The adjustment of the field of view of the camera 202 is performed, for example, as follows. As shown in FIG. 15, on the top surface of the visitor handling unit 110a of the business processing counter 110, a marker MK for identifying a region to be imaged (central region where exchange of events is performed) AR is formed. The size of the area is, for example, about 30 cm to 45 cm in the width direction and about 20 cm to 35 cm in the depth direction, for example, about the size of paper of B4 to A3 size, for receiving medicines and cash in hospitals and pharmacies etc. is there. The marker MK can be formed, for example, by a seal or the like having an adhesive layer on the back surface, and can be formed by placing a paper of a size serving as a reference on the top surface and sticking on the four corners outside.

  Subsequently, the base portion 273 of the camera stand 200 is placed on the side of the area specified by the marker MK, and the position and the direction of the head portion 270 are adjusted. The head unit 270 may extend above the imaging target area AR. However, if the head unit 270 gets too deep into the area AR, the visitor VP easily feels in the way of exchanging events, and the camera 202 attached to the head unit 270 Problems such as being easy to notice. In the present embodiment, in order to prevent this, the direction of the head portion 270 is adjusted along one edge in the width direction of the imaging target area AR.

  In this state, photographing by the camera 202 is started, and the photographed image is displayed on the monitor 56 of the computer 250. In this state, while finely adjusting the position of the base portion 273 of the camera stand 200, as shown in FIG. 18, the position of the camera 202 is adjusted in height and front-back direction by bending deformation of the flexible tube forming the support portion 272. Further, the incident angle of the head portion 270, that is, the optical axis of the camera 202 with respect to the imaging target area AR is adjusted by torsional deformation around the axis of the flexible tube.

  In FIG. 18, the base portion 273 of the camera stand 200 is placed outside in the width direction of the imaging target area AR (FIG. 15), and the head portion 270 is located above the imaging target area AR along one edge in the width direction. Arranged as. In this state, the optical axis of the camera 202 is in the width direction of the imaging target area AR by torsionally deforming the head section 270 around the axis of the support section 272 in order to maximize the entire imaging target area AR and fit in the camera view. The angle is adjusted to look obliquely from above the end of the.

  An image displayed on the monitor 56 is, for example, as shown in FIG. When the number of pixels of the camera 202 is selected in the range of, for example, 1.5 million pixels to 3 million pixels (for example, 2 million pixels), the area ratio of the imaging target area AR occupied in the video display area of the monitor 56 in the video is 60 It can be said that it is desirable to secure the information definition (especially the resolution for characters) of the event to be photographed if it is% or more and 98% or less. In FIG. 20, the information on the name, dosage, and usage on the medicine bag MB can be read without problems in the above settings, and the amount of money being exchanged can be easily grasped.

  Further, as shown in FIGS. 15 and 19, the tablet computer 250 in which the monitor 56 is integrated is the near side of the clerk WP at the work unit 110 b, which is one step lower than the visitor handling unit 110 a in the business processing counter 110. As long as the visitor VP is not overriding the counter, he is not aware of his whereabouts. This makes it more difficult to realize that the interaction at the time of visit is recorded.

  On the other hand, as shown in FIG. 15, in the case where the photographing target area AR is to be photographed obliquely from above the side by the camera 202 attached to the camera stand 200, as shown in FIG. 18 and FIG. The face of the VP is a camera angle that is outside the field of view. As a result, unlike the first configuration example, the face of the visitor VP is not reflected in the moving image, and it is impossible to directly identify the visitor (face) VP from the moving image. However, from the type of the item exchanged on the counter, the personal information displayed on it (for example, the name of the visitor VP described in the medicine bag MB), and the voice recorded through a microphone (not shown), etc. In many cases, it is possible to indirectly identify the visitor VP. In addition, since the hand VP of the visitor VP always appears in the field of view when exchanging articles, it is possible to identify the visitor VP also from the characteristics of the hand and the clothing CT appearing at hand.

  On the other hand, it is possible to provide another camera for photographing the face of the visitor separately from the camera for photographing the top surface of the table, and it is also possible to combine the photographed face image with the moving image photographed by the camera 202 and record it. . However, as a simpler configuration, the position where the reflected image VPI of the face of the visitor VP can be visually recognized in the photographed image of the camera 202 on the upper surface of the visitor handling unit 110a (top) of the business processing counter 110 If the photographing auxiliary mirror 203 is disposed at a position closer to the staff WP in the photographing target area AR as shown in FIG. 15, the information on the face of the visitor VP can be easily incorporated into the photographed moving image.

  As shown in FIG. 20, it is the face of the visitor who has flipped right and left into the mirror 203, but when the problem arises, the visitor VP is the face on the mirror 203 in the video. It can be said that it is enough information to know whether or not you are yourself. Note that, in order to accurately determine the visitor VP by the reflected image VPI on the photographed image of the camera 202, the photographing auxiliary mirror 203 preferably performs office work within a range where the face of the visitor VP can be reflected. It is desirable to set the inclination angle from the top surface of the processing counter 110 small.

  The recording operation by the visitor recording system 600 is the same as the visitor recording system 500 according to the first configuration example described in detail in (Embodiment 1). As shown in FIG. 15, the tablet computer 250 is placed on the side of the staff WP, and as shown in FIG. 22 (without a visitor) and FIG. 23 (with a visitor), a picture is taken on the screen of the monitor 56. The video is constantly displayed on the monitor. When the video is exchanged with the visitor VP, the video is recorded, and when the visitor VP is detected and recording is started, as shown in FIG. 23, a recording indicator RM indicating that recording is in progress is displayed on the screen. Is displayed on. The attendant can easily grasp whether the recording of the visitor is properly performed based on the presence or absence of the recording indicator RM.

  Further, since the recording indicator RM on the monitor 56 makes it possible to grasp that recording is in progress, it is not necessary to provide an LED during recording in the human detection unit 201 (Doppler sensor module 3), and the human detection unit 201 is installed. The position has also been changed to be closer to the visitor VP. As a result, the installation situation of the human detection unit 201 becomes difficult to be realized by the visitor VP, and the detection sensitivity of the presence or absence of the visitor by the breathing or the heart rate is also improved.

  As shown in the upper part of FIG. 24, the image captured by the camera 202 is a camera in the width direction of the image capturing target area AR because the image capturing target area AR is captured from diagonally above by the camera disposed on the side. The area is further reduced in size and displayed. If there is no problem in grasping the event on the imaging target area AR, the video may be recorded without being particularly corrected. However, when it becomes difficult to identify events such as small characters in areas far from the camera, each video frame on the moving image is perspectively derived from the distance from the camera as described above. It is also possible to perform recording processing in a form in which the dimensional distortion is corrected.

  FIG. 24 shows an example of the correction, where the upper side shows the frame MFM before correction and the lower side shows the frame MFM 'after correction. Assuming that the positions of the markers MF for defining the imaging target area AR, which are captured in the frame MFM before correction, are A, B, C, and D, the quadrilateral ABCD obtained by connecting these is before the correction In the frame width direction, the height is reduced as going to the right in the screen width direction, but in the frame MFM 'after correction, this becomes a quadrangle A'B'C'D' forming a rectangle. Since the quadrilateral ABCD before correction and the quadrilateral A'B'C'D 'after correction in the pixel coordinate system stretched on the frame are invariant as long as the position of the marker MK is not changed, coordinate conversion of both is performed. The elements of the matrix (2 × 2) can be calculated in advance. Then, by performing primary conversion processing using the matrix on the coordinates of each pixel in the frame MFM before correction, it is possible to convert this to the coordinates in the frame MFM 'after correction.

  Further, FIG. 25 shows an example in which an illumination light source is incorporated in the head portion 270 of the camera stand 200. The illumination light source is configured as an LED 221, and is incorporated at a position adjacent to the camera 202 with respect to the cover portion 270c. The LED 221 makes it possible to capture an image by the camera 202 while illuminating the top surface of the top plate, and the camera stand 200 can also be used as a real desk lamp. This makes it more difficult for visitors to realize that the camera 202 is incorporated in the camera stand 200, and enables the clear recording of a captured moving picture to be possible by illuminating the top surface of the table top with a light source. . The LED 221 is supplied with power by the USB cable 202 w ′, but is branched from the USB cable 202 w toward the camera 202 via the hub HB so that it can be turned on / off regardless of the operation of the camera 202, A switch SW for switching on / off of the LED 221 is disposed on the LED.

  As mentioned above, although embodiment of this invention was described, it is an illustration to the last, and this invention is not limited to this.

1,201 human detection unit 1c case 1b bottom surface 1w USB cable 2 camera 3 Doppler sensor module 3a analog circuit unit 3d microprocessor unit 5 recording LED
6 USB I / O IC (USB interface)
10 counter 31 CPU
32 RAM
33 I / O unit 34 ROM
36 PROM
36a Band pass filter module (detection target band component analysis means)
36b FFT module (Fourier transform processing means)
36c Human Detection Judgment Program (Detection target band component analysis means, passing waveform signal strength evaluation means, detection target band spectrum strength evaluation means, visit judgment means)
37 Antenna (output part of transmitting wave, receiving part of reflected wave)
38 Doppler sensor RF circuit 40 Quadrature detection unit (detection unit)
59 HDD
62 Recording device 62a Recording data storage unit (recording data storage means)
63 USB memory 64 USB controller 200 camera stand 203 shooting auxiliary mirror 270 head section 272 support section 273 base section 500, 600 visitor recording system

Claims (24)

It is a recording system for visiting records of paperwork counters,
A camera for taking a video of the upper surface of the paperwork counter;
A recording device for recording a video shot by the camera;
A Doppler sensor module disposed close to the visitor to such an extent that the heartbeat and / or respiration of the visitor can be detected for the visitor staying in front of the business processing counter;
Detection target band component analysis means which defines a frequency band covering signal components derived from at least one of human heart beat and respiration as a detection target band and analyzes the intensity of the detection target band component in the detection signal of the Doppler sensor module When,
Visit determination means for determining the presence or absence of a visitor in front of the business processing counter based on a strength analysis result of the detection target band component;
Recording control means for causing the recording device to start recording the captured moving image when it is determined that the visitor is present;
A visitor recording system characterized by comprising.   The visitor recording system according to claim 1, wherein the detection target band is set to cover 30% or more of a frequency range of 0.1 Hz or more and 3 Hz or less.   The visitor video recording system according to claim 1 or 2, wherein the detection target band is set to include a frequency range of 0.3 Hz or more and 1 Hz or less. The detection target band component analysis means includes a band pass filter for extracting the detection target band component from the waveform of the detection signal, and a passing waveform signal strength evaluation means for evaluating the strength of the passing waveform signal of the band pass filter. ,
The visitor recording system according to any one of claims 1 to 3, wherein the visit determination means performs the determination based on a strength evaluation result of the passing waveform signal. The detection target band component analysis means performs Fourier transform processing on the waveform of the detection signal to generate Fourier transform processing means for generating frequency spectrum information of the detection signal, and spectrum intensity of the detection target band in the frequency spectrum information A detection target band spectrum strength evaluation unit to be evaluated;
The visitor recording system according to any one of claims 1 to 3, wherein the visit determination means performs the determination based on an evaluation result of the spectrum intensity of the detection target band.   6. The visit determination unit according to any one of claims 1 to 5, wherein the visit determination unit determines that the visitor is present only when the intensity analysis result of the detection target band component continues the human detection state for a predetermined time or more. Visitor recording system. The visit determination means is configured to determine that the visitor has exited when the strength analysis result of the detection target band component shifts from a human detection state to a human non-detection state and a predetermined time or more elapses.
The visitor recording system according to any one of claims 1 to 6, wherein the recording control means causes the recording device to stop recording of the photographed moving image in response to the determination of withdrawal of the visitor.   8. The visitor recording system according to claim 7, wherein the recording apparatus comprises recording data storage means for storing recording data in association with recording date information each time recording of the photographed moving image is interrupted.   A monitor for displaying an image being captured by the camera, and a recording indicator indicating that recording is being performed on the monitor when the captured moving image based on the image being captured is being recorded by the recording device The visitor recording system according to any one of claims 1 to 7, further comprising: recording indicator display means.   10. The visitor recording system according to claim 9, wherein the monitor is disposed on a side of a clerk in charge of a clerk who faces the visitor across the clerk.   The visitor recording system according to claim 10, wherein the Doppler sensor module is installed on a lower surface of an edge of the top plate of the business process counter facing the visitor. The Doppler sensor module has an output unit of a microwave transmission wave, a reception unit of a reflection wave formed by reflection of the transmission wave by a moving body, and a detection unit that detects a Doppler shift waveform component of the reflection wave. An analog circuit unit, an A / D conversion unit that generates digital waveform information by converting the Doppler shift waveform extracted by the detection unit into a digital signal, an input / output unit to which the digital waveform information is input, and the digital waveform information The ROM is stored with a moving body determination program that determines the presence or absence of a moving body by analysis, a RAM that forms an execution area of the moving body determination program, and the moving body determination program. A microprocessor unit having a CPU for outputting data to a determination output port;
A part of the program storage area of the ROM is configured as a PROM area that allows external write processing, and the CPU can read the function realization program of the detection target band component analysis means and the visit determination means The program is written and stored in the PROM area in a form, and the CPU executes the moving body determination program in a form in which the function implementation program is incorporated, and outputs the determination result from the determination output port. The visitor recording system according to any one of claims 11 to 12. The Doppler sensor module, a USB interface for transmitting the determination result by the Doppler sensor module to the outside, a unit side USB port for connecting a USB communication line to the USB interface, and a connection opening of the USB port A human detection unit that constitutes a USB target device by integrating the Doppler sensor module and the housing that accommodates the USB interface;
The camera and the recording device are provided in a computer having a computer-side USB port and functioning as a USB host device, and a function realization program of the recording control means is installed, and the computer-side USB is further installed via the USB communication line The human detection unit is connected to the port,
13. The computer according to claim 12, wherein the computer acquires the determination result from the human detection unit by USB communication, and performs recording control of the captured moving image by the recording device along with execution of the function realization program of the recording control unit. Visitor recording system.   The visitor recording system according to claim 13, wherein the camera is a USB camera connected to the computer side USB port of the computer.   A display unit indicating the recording operation state of the recording device is provided at a visible position on the housing of the human detection unit, the display unit is connected to the USB interface, and the recording device is recording 15. The visit according to claim 13 or 14, wherein in a case where the computer forming the USB host device receives a control signal transmitted via the USB communication line, drive control is performed to a display state indicating that recording is in progress. Recording system.   The housing of the human detection unit is formed of a resin material capable of transmitting microwaves output from the Doppler sensor module, and has a flat bottom surface and a size and shape that can be grasped so as to be covered by a palm from above. The visitor recording system according to any one of claims 13 to 15, wherein the visitor recording system is configured to be slidable on the work processing counter at the bottom surface.   The computer is configured as a tablet computer including a monitor for displaying an image being captured by the camera, and a touch panel input unit disposed in an overlapping manner on the monitor. The visitor recording system according to claim 13 or 14, further comprising recording indicator display means for displaying a recording indicator indicating that recording is in progress on the monitor when the captured moving image is recorded.   The camera is configured as a tablet computer including a monitor for displaying an image being captured by the camera, and a touch panel input unit arranged in an overlapping manner on the monitor, and the captured moving image based on the image being captured by the recording device The visitor recording system according to claim 13 or 14, further comprising: recording indicator display means for displaying a recording indicator indicating that recording is in progress on the monitor, when the recording is being performed.   It has a base portion installed on the top surface of the top plate of the office work processing counter, a support portion having a lower end coupled to the base portion so as to rise upward and a head portion connected to the upper end of the support portion. The visitor recording system according to claim 14, further comprising a camera stand, wherein the camera is attached to the head unit to form a field of view over the top surface of the top plate.   The support column portion of the camera stand has a cylindrical outer shape, and can be bent in a direction intersecting with the axis and can be twisted about an axis, and can hold a deformed shape. The visitor recording system according to claim 19, which is configured. The camera attached to the camera stand performs imaging at an angle such that the top surface of the top of the business processing counter is within the field of view, and the face of the visitor is outside the field of view.
The photographing auxiliary mirror is disposed at a position where the reflection image of the visitor's face can be visually recognized in the photographed image of the camera on the top surface of the top plate of the business processing counter. Visitor recording system described in.   22. A computer program which causes the computer to function as the recording control means of the visitor recording system according to any one of claims 1 to 21 by being installed in the computer.   17. The Doppler sensor module and a USB interface for transmitting the determination result by the Doppler sensor module to the outside, used in the visitor recording system according to any one of claims 13 to 16. A USB target in which a unit side USB port for connecting a USB communication line to the USB interface, and a housing having the connection opening of the USB port and housing the Doppler sensor module and the USB interface are integrated A person detection unit characterized in that it is configured as a device.   A visitor comprising the human detection unit according to claim 23, a recording medium in which the computer program according to claim 22 is stored in a computer readable state, or a computer in which the computer program is installed. Recording system construction kit.

Images