Operation status display system and nurse call system
The operation state display system addresses the challenge of confirming camera operation in hospitals by visually indicating the relative position of a person with respect to a bed using LEDs, enhancing the ability to detect and respond to patient states like getting up or falling.
Patent Information
- Application Number
- JP2022058228
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2022-03-31
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2042-03-31
AI Technical Summary
Existing camera systems in hospitals struggle to provide easy visual confirmation of their operation state, which is crucial for timely response to patient fall accidents and wandering incidents.
An operation state display system that includes a camera with detection and determination means to identify the relative position of a person with respect to a bed, using LEDs to visually indicate the camera's operation state.
Facilitates easy visual verification of camera operation by displaying the relative position of a person with respect to the bed, enabling quick detection of misoperations and potential issues.
Smart Images
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Abstract
Description
Technical Field
[0001] The present disclosure relates to an operation state display system for displaying the operation state of a camera that detects a predetermined state such as a patient getting up or getting out of bed, and a nurse call system including the operation state display system.
Background Art
[0002] Conventionally, in hospitals and the like, a technology of a camera that is provided in a hospital room and detects a state such as a patient getting up has been developed. For example, Patent Document 1 introduces a technology of a nurse call system that photographs a patient with a camera installed near the patient's bed and analyzes the photographed video to detect a state such as the patient getting up with high accuracy.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] By the way, in a camera that detects the state of a patient, it is desirable to always operate normally so that a fall accident or wandering can be quickly dealt with. For this reason, at the medical and nursing care sites, there has been a demand for easily checking the operation state of the camera.
[0005] Therefore, an object of the present disclosure is to provide an operation state display system for displaying the operation state of a camera that detects a state such as a patient getting up, and a nurse call system including the operation state display system.
Means for Solving the Problems
[0006] To solve the above problems, an operating state display system according to the present disclosure is an operating state display system that displays the operating state of a camera, comprising a camera installed near a patient's bed, detection means for detecting a person and a bed included in the video of the camera, and determination means for determining the relative position of the person with respect to the bed, wherein the camera includes display means for displaying the relative position.
Advantages of the Invention
[0007] According to the operating state display system of the present disclosure, since the relative position of a person included in the video of the camera with respect to the bed is determined and the relative position is displayed on the camera, it is possible to easily check the operation of the camera by visually observing the camera.
Brief Description of the Drawings
[0008]
Figure 1
Figure 2
Figure 3
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Figure 5
Figure 6
Figure 7
Figure 8
Figure 9
Modes for Carrying Out the Invention
[0009] Hereinafter, an embodiment in which the present disclosure is embodied in a nurse call system including an operation state display system will be described with reference to the drawings.
[0010] As shown in FIGS. 1 to 3, the nurse call system 1 of this embodiment includes a nurse call master unit 6 installed in a nurse station, a mobile terminal 10 including a PHS, a smartphone, etc. carried by a nurse, a control unit 7 installed in an administration room or the like, a relay device 8 such as an IP-PBX installed in a server room or the like, a base station 9 arranged at various places in the hospital, a corridor light 4 installed in the corridor, a nurse call slave unit 5 provided near a patient bed 51, a camera 3 provided near the patient bed 51, and a nurse call server 2 that provides information about the nurse call system 1 and the like. The relay device 8, the control unit 7, the corridor light 4, the nurse call master unit 6, and the nurse call server 2 are connected by a LAN line L1. The nurse call slave unit 5 is connected to the corridor light 4 by a transmission line L2, and the camera 3 is connected to the corridor light 4 by a transmission line L3.
[0011] The camera 3 includes a CPU 31 that controls the camera 3, an imaging unit 32 that captures an image 12, a display unit 33 that displays the relative position of a person 52 with respect to the bed 51, and a detection unit 37 that detects a predetermined state of a patient based on the image 12. The detection unit 37 has a function of detecting the person 52 and the bed 51 included in the image 12. The detection unit 37 also includes a determination unit 38 that determines the relative position of the person 52 with respect to the bed 51. The display unit 33 has a bed area 35 that schematically represents the bed 51, LEDs 36 (36a to 36e) as lighting means, and a lighting control unit 34 that turns on / off the LEDs 36.
[0012] As shown in FIG. 4, the camera 3 is installed on the head side wall surface of the bed 51 (FIG. 4(a)) or the bedside (FIG. 4(b)) and constantly captures the periphery of the bed.
[0013] The detection unit 37 analyzes the video 12 and detects a predetermined state of a patient (not shown) included in the video 12. In video analysis, known video analysis techniques can be adopted. For example, SIFT (Scale Invariant Feature Transform), SURF (Speeded-Up Robust Features), etc. can be selected. The states of the patient include the state of lying on the bed 51 (lying down), the state of raising the upper body on the bed 51 (sitting up), the state of sitting on the edge of the bed 51 (perching), the state of leaving the bed 51 (getting out of bed), the state of standing up (standing up), the state of lying on the floor (falling), the state of falling from the bed 51 (falling off), etc.
[0014] Also, the detection unit 37 analyzes the video 12 and detects the person 52 and the bed 51 around the bed included in the video 12. At this time, it may be configured to discriminate between the patient and the person 52 other than the patient, and only detect the person 52 other than the patient. The discrimination between the patient and the person 52 other than the patient can be performed, for example, from the identity with the patient who is the detection target of the state ST, the distance d from the bed 51, etc.
[0015] Fig. 5 shows the video 12, and the person 52 and the bed 51 detected in the video 12. In Fig. 5, the video 12 is shown upside down for easy comparison with the display unit 33. As shown in Fig. 5, the determination unit 38 determines the relative position of the person 52 with respect to the bed 51 based on the detected person 52 and bed 51. For example, as shown in Fig. 5(a), the determination unit 38 can compare the person 52 with each point P (Pa~Pe) and set the closest point Pa as the relative position. Alternatively, as shown in Fig. 5(b), the periphery of the bed 51 can be partitioned into predetermined blocks B (Ba~Be), and the block Ba containing the person 52 can be set as the relative position. In addition, the determination unit 38 may be subjected to machine learning using the video 12 to determine the relative position.
[0016] As shown in FIG. 6, the display unit 33 lights up the LED 36 corresponding to the relative position. Specifically, when the relative position is the point Pe on the right side of the bed 51, the lighting control unit 34 of the display unit 33 lights up the LED 36e on the right side of the bed area 35 (FIG. 6(a)); when the relative position is the point Pa on the left side of the bed 51, it lights up the LED 36a on the left side of the bed area 35 (FIG. 6(b)); when the relative position is the point Pc at the foot side of the bed 51, it lights up the LED 36c below the bed area 35 (FIG. 6(c)).
[0017] Also, when the relative position is the point Pd at the lower right corner, the lighting control unit 34 lights up the LED 36e on the right side and the LED 36c below the bed area 35 (FIG. 7(a)). An LED 36d may be provided at the lower right corner of the display unit 33 and the LED 36d may be lit (FIG. 7(b)).
[0018] As shown in FIG. 8, when the distance d between the bed 51 and the person 52 is within a predetermined distance D (d ≦ D), the determination unit 38 determines the relative position, and when the distance d between the bed 51 and the person 52 exceeds the predetermined distance D (d > D), it does not determine the relative position. Here, the distance D is preferably about 50 cm. This is because if the relative position of a person 52 who is too far away is displayed, the relative positions of multiple persons 52 will be displayed and the operating state cannot be confirmed. Note that the distance d can be appropriately changed according to the arrangement state of the bed 51 in the hospital room and the like.
[0019] Next, the operation of the operation state display system 11 in the nurse call system 1 with the above configuration will be described based on FIG. 9. First, when the imaging unit 32 of the camera 3 images the periphery of the bed (S1), the detection unit 37 of the camera 3 performs video analysis and detects the person 52 and the bed 51 included in the video 12 (S2). Here, when the distance d between the person 52 and the bed 51 exceeds a predetermined distance (d > D), the process ends (S3: No).
[0020] On the other hand, when the distance d between the person 52 and the bed 51 is within a predetermined distance (d ≤ D) (S3: Yes), the determination unit 38 determines the relative position of the person 52 with respect to the bed 51 (S4). The display unit 33 (lighting control unit 34) of the camera 3 lights up the LED 36 corresponding to the relative position (S5).
[0021] According to the above nurse call system 1, since the operating state of the camera 3 can be confirmed just by standing around the bed 51, medical staff and the like can easily perform a confirmation test visually. In addition, as a test of the detection unit 37, there is a method using gesture recognition using image analysis. However, using person detection as in the present disclosure is less difficult and can be developed at low cost.
[0022] Furthermore, since the relative position of the person 52 with respect to the bed 51 is displayed by lighting up the LED 36, it can be confirmed that the bed 51 is being detected normally. In other words, if the LED 36 does not light up even when standing around the bed 51, there is a possibility that the bed 51 has been misdetected, which can also be a trigger to review the settings of the detection unit 37.
[0023] Note that the present disclosure is not limited to the above embodiment, and within the scope not departing from the gist of the present disclosure, for example, as in (1) and (2) below, the configuration of each part can be arbitrarily changed and implemented. For example, the number of LEDs 36 can be changed as appropriate. (1) Appropriately change the number and arrangement of the LEDs 36. (2) Mount both the detection unit 37 and the determination unit 38, or either one of them, on the nurse call server 2.
Explanation of reference numerals
[0024] 1 Nurse call system 2 Nurse call server 3 Camera 4 Corridor light 5 Nurse call sub-unit 6 Nurse call main unit 7 Control unit 8 Relay device 9 Base station 10 Mobile terminal 12 Image 31 CPU 32 Photographing unit 33 Display unit 34 Lighting control unit 35 Bed area 36 LED 37 Detection unit 38 Judgment unit 51 Bed 52 Person Block B Point P L1 LAN line L2, L3 Transmission line
Claims
1. An operation display system for displaying the operating state of a camera, comprising: a camera installed near a patient's bed, detection means for detecting a person and a bed included in the video of the camera, and determination means for determining the relative position of the person with respect to the bed; The operation state display system, wherein the camera includes display means for displaying the relative position.
2. The determination means outputs any one of a plurality of points around the bed as the relative position, The display means includes a bed area indicating the bed and lighting means indicating the plurality of points, The operation state display system according to claim 1, wherein the display means lights the lighting means corresponding to the relative position.
3. The operation state display system according to claim 1 or 2, wherein the determination means does not determine the relative position for a person at a predetermined distance or more from the bed.
4. The camera includes the detection means and the determination means, The operation state display system according to any one of claims 1 to 3.
5. A nurse call system including the operation state display system according to any one of claims 1 to 4.
Citation Information
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