Image forming system
The image forming system optimizes energy efficiency and user convenience by using a processor to control human presence sensors in multiple regions with adjustable detection distances, distinguishing between casual passersby and intended users, thus reducing unnecessary power mode releases and enhancing device readiness.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- FUJIFILM BUSINESS INNOVATION CORP
- Filing Date
- 2024-12-26
- Publication Date
- 2026-07-08
Smart Images
Figure 2026113967000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an image forming system.
Background Art
[0002] Patent Document 1 discloses an image forming apparatus including a human body sensor capable of detecting a human body located in a detection area within a predetermined range, and a control unit that releases a power saving mode in response to detection by the human body sensor during the power saving mode and causes an image forming unit to execute a job.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] Conventionally, when a person enters the area around a device, a mechanism for releasing the power saving mode of the device is known. In this mechanism, the device also reacts to a person who just passes by the periphery of the device, and the power saving mode is unnecessarily released, so the energy saving property is impaired. On the other hand, if the reaction area is narrowed, the startup of the device will be delayed, and the person using the device will be made to wait, resulting in a decrease in convenience. An object of the present invention is to improve energy saving performance while ensuring the convenience of a person who will use the device.
Means for Solving the Problems
[0005] The invention described in claim 1 is an image forming system equipped with a processor, wherein the processor controls the human presence sensor to detect a person in a second region, which is a second region, which is a second region, where the distance from the human presence sensor is shorter than that of the first region, when the human presence sensor detects a person in a first region, which is a first region, which is a first region, which is a second region, which is a second region, which is a second region, which is a second region, which is a second region, which is a second region, which is a second region, which is a second region, which is a second region, which is a second region, which is a second region, which is a second region, which is a second region, which is a third region, which is a second region, which is a second region, which is a third region, which is a second region, which is a second region, which is a third region, which is a second region, which is a second region, which is a second region, which is a second region, which is a second region, which is a second region, which is a second region, which is a second region, which is a second region, which is a second region, which is a second region, when the human presence sensor detects a person in a first region, which is The invention described in claim 2 is an image forming system according to claim 1, characterized in that when the processor detects a person in the first region, it controls the human presence sensor to detect a person in the second region at a distance longer than the second distance in a specific direction connecting the location where the person was detected and the image forming apparatus, and when the controlled human presence sensor detects a person, it restores the image forming apparatus to the third power state. The invention described in claim 3 is an image forming system according to claim 2, characterized in that when the processor detects a person in the first area, it controls the human presence sensor such that the distance at which a person is detected increases as the person approaches the specific direction within a predetermined range including the specific direction, and when the controlled human presence sensor detects a person, it restores the image forming apparatus to the third power state. The invention described in claim 4 is an image forming system according to claim 1, characterized in that the processor divides the first region into a plurality of radial regions centered on the image forming apparatus, and when the human presence sensor detects a person in any of the divided regions, it controls the human presence sensor to detect the person in the second region at a distance longer than the second distance for the divided region in which the person was detected, and when the controlled human presence sensor detects a person, it restores the image forming apparatus to the third power state. The invention described in claim 5 is an image forming system according to claim 4, characterized in that the processor controls the human presence sensor to detect a person at a distance longer than the second distance in an adjacent divided region that is adjacent to the divided region in which the person was detected, among other divided regions different from the divided region in which the person was detected, and when the controlled human presence sensor detects a person, it restores the image forming apparatus to the third power state. The invention described in claim 6 is an image forming system according to claim 5, characterized in that the processor controls the motion sensor to detect a person in an adjacent divided region at a distance shorter from the motion sensor than the divided region where the person was detected. The invention described in claim 7 is an image forming system according to claim 1, characterized in that when the processor detects a person in a predetermined area using the human presence sensor, it restores the image forming apparatus, which is in the first power state, to the third power state. The invention described in claim 8 is an image forming system according to claim 7, characterized in that the predetermined region is provided so as to extend from both ends with the image forming apparatus as the center. [Effects of the Invention]
[0006] According to the invention of claim 1, it is possible to improve energy efficiency while ensuring convenience for the person who will use the device. According to the invention of claim 2, when a person is detected in the first region, compared to a configuration in which a person is not detected in the second region at a distance longer than the second distance in a specific direction connecting the location where the person was detected and the image forming apparatus, it is possible to detect the approach of a person who is likely to use the apparatus from a greater distance. According to the invention of claim 3, when a person is detected in the first area, compared to a configuration in which the detection distance for a person is not increased as the person approaches a specific direction within a predetermined range including that specific direction, the range in which a person's approach can be detected from a greater distance can be expanded, centered on that specific direction. According to the invention of claim 4, among a plurality of regions radially divided around the image forming apparatus, the approach of a person who is likely to use the apparatus can be detected early in the region where a person has been detected. According to the invention of claim 5, among a plurality of regions radially divided around the image forming apparatus, the approach of a person who is likely to use the apparatus can be detected early in a region adjacent to the region where a person has been detected. According to the invention of claim 6, it is possible to detect the approach of a person who is likely to use the device at an early stage while reducing false detections. According to the invention of claim 7, the image forming apparatus can be efficiently returned to a person who is approaching from a predetermined area. According to the invention of claim 8, the image forming apparatus can be efficiently returned to a person approaching from areas extending from both ends of the central region. [Brief explanation of the drawing]
[0007] [Figure 1] This figure shows the configuration of the image forming system in this embodiment. [Figure 2] This figure shows the configuration of the image forming apparatus in this embodiment. [Figure 3] This diagram shows the detection area for the human presence sensor. [Figure 4] This is an explanatory diagram illustrating the power state of an image forming apparatus. [Figure 5] This is a flowchart showing the recovery process for an image forming apparatus. [Figure 6] This diagram shows a detection distance table for motion sensors. [Figure 7] This is an explanatory diagram to illustrate the changes in the detection area. [Figure 8] This diagram shows the movement patterns of people. [Figure 9] This flowchart shows another control example 1 of the recovery process for an image forming apparatus. [Figure 10] This is an explanatory diagram illustrating the changes in the detection area in another control example 1. [Figure 11] It is a flowchart showing another control example 2 of the return process of the image forming apparatus. [Figure 12] It is an explanatory diagram for explaining the change of the detection area in another control example 2. [Figure 13] It is a diagram showing the configuration of the detection area including the first area and the direct return area.
Embodiments for Carrying Out the Invention
[0008] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. <Configuration of Image Forming System> FIG. 1 is a diagram showing the configuration of an image forming system 1 in the present embodiment. The image forming system 1 includes an image forming apparatus 2 having various functions such as printing, scanning, and copying. The image forming apparatus 2 is assumed to be installed in a place where people come and go, such as an office or a shared space.
[0009] <Configuration of Image Forming Apparatus> FIG. 2 is a diagram showing the configuration of the image forming apparatus 2 in the present embodiment. The image forming apparatus 2 includes a control unit 10, a storage unit 20, and an operation unit 30. The image forming apparatus 2 also includes a display unit 40, an image reading unit 50, and an image forming unit 60. The image forming apparatus 2 also includes a communication unit 70 and a human sensor 100. These functional units are connected to a bus 101, and data is exchanged via this bus 101.
[0010] The control unit 10 controls each of the above-mentioned functional units in the image forming apparatus 2. The control unit 10 includes a CPU (Central Processing Unit) 111, which is a calculation means, and RAM (Random Access Memory) 112 and ROM (Read Only Memory) 113, which are storage means. The RAM 112 is the main memory and is used as working memory when the CPU 111 performs calculations. The ROM 113 holds data such as programs and pre-prepared setting values, and the CPU 111 reads programs and data directly from the ROM 113 and executes them. Programs and data are also stored in the storage unit 20. The CPU 111 reads the programs stored in the storage unit 20 into the RAM 112 and executes them.
[0011] In this embodiment, the CPU 111 of the control unit 10 reads and executes a program to realize various functions. The functions realized in this embodiment include control of the operation of each functional unit, control of the power state of the image forming apparatus 2, and control of the detection distance by the human presence sensor 100. Details of these functions will be described later.
[0012] The memory unit 20 is a functional unit that stores programs and data for the CPU 111 to execute, as well as various data generated by various operations, such as image data read by the image reading unit 50. The memory unit 20 can be implemented, for example, by a storage device such as a magnetic disk drive or an SSD (Solid State Drive).
[0013] The operation unit 30 is a functional unit that receives user input. The operation unit 30 is composed of, for example, hardware keys or touch sensors that output control signals corresponding to the position pressed or touched by a finger or the like. It may also be configured as a touch panel, combining a touch sensor with a liquid crystal display that constitutes the display unit 40.
[0014] The display unit 40 is a functional unit that displays information images that present various information to the user, preview images of images to be processed such as read or output, and operation images for the user to perform operations. The display unit 40 is composed of, for example, a liquid crystal display. The operation unit 30 and the display unit 40 can be combined and used as a user interface means for the user to input and output information to the image forming apparatus 2.
[0015] The image reading unit 50 is a functional unit that optically reads an image on the document. Examples of image reading methods include the CCD method, which reduces the reflected light from light emitted from a light source onto the document using a lens and receives it with a CCD (Charge Coupled Device), and the CIS method, which receives the reflected light from light emitted sequentially from an LED (Light Emitting Diode) light source onto the document with a CIS (Contact Image Sensor).
[0016] The image forming unit 60 is a functional unit that forms an image based on image data on a medium such as paper using an image forming material. As a method for forming an image on a medium, for example, an electrophotographic method is used, in which toner is used as the image forming material, and the toner attached to the photoreceptor is transferred to the medium to form an image.
[0017] The communication unit 70 is a functional unit that sends and receives commands and data to and from an external device. The communication unit 70 uses an interface that corresponds to the communication method with the external device. The connection with the external device may be made via a network or by direct connection. The communication line may be a wired line or a wireless line.
[0018] The human presence sensor 100 is a sensor that detects people present in the vicinity of the image forming apparatus 2. For example, the motion sensor 100 can be a detection sensor that includes an output unit that outputs a signal and a detection unit that detects that signal. In this case, the motion sensor 100 will obtain different detection results depending on whether the signal transmitted from the output unit is detected by the detection unit. The motion sensor 100 can be fitted with various types of sensors, as long as they are capable of detecting the presence of moving objects such as people.
[0019] The human presence sensor 100 can be, for example, an ultrasonic sensor, a light-based sensor, a radio wave-based sensor, or a sensor that recognizes human body temperature. It can also recognize a person by analyzing images captured by various imaging methods. One example of such a sensor is one in which a signal transmitted from the output unit reaches a person, and the reflected signal is detected by the detection unit to detect the person's presence. In this configuration, if no reflected signal is detected, the presence of a person is not detected.
[0020] For example, in an ultrasonic sensor, ultrasonic waves transmitted from the output unit reach a person, and detection is performed by receiving the reflected ultrasonic waves in the detection unit. Similarly, in a light-based sensor, light emitted from the output unit reaches a person, and detection is performed by receiving the reflected light in the detection unit. In a radio wave-based sensor, radio waves emitted from the output unit reach a person, and detection is performed by receiving the reflected radio waves in the detection unit.
[0021] The human presence sensor 100 in this embodiment is equipped with a function to adjust the output strength of the output unit. The detection distance of the human presence sensor 100 can be changed by adjusting, for example, the output strength of the output unit. Specifically, increasing the output strength allows the signal to travel further, thus extending the detection distance. On the other hand, decreasing the output strength shortens the signal's range, thus shortening the detection distance. In this embodiment, the detection distance of the human presence sensor 100 is switched to multiple set values by controlling the output intensity. These set values are stored in the detection distance table described later.
[0022] <Detection area of the motion sensor> Figure 3 shows the detection area 200 by the human presence sensor 100. The human presence sensor 100 outputs a signal, such as ultrasound, in a specific direction at a predetermined output intensity to detect the presence of a person within a specific range. The human presence sensor 100 also outputs this signal sequentially in multiple directions while changing the angle. In this way, the human presence sensor 100 searches for the presence of a person within a detection area 200 that extends in an arc shape from the image forming apparatus 2.
[0023] For example, the motion sensor 100 outputs a signal within a range of approximately 0° to 120°, centered on the device itself, changing the angle in increments of approximately 10°. Note that this angle setting is just an example, and other setting values can be used.
[0024] One method for controlling the direction of signal output is to rotate the output unit itself with a motor to change the direction of the signal output. Another method involves fixing the output unit and using a mirror element whose angle can be adjusted with a motor to reflect the signal and control the output direction.
[0025] As a result, a detection area 200 is formed that extends in an arc shape from the image forming apparatus 2, as shown in Figure 3. Note that the detection area 200 shown in Figure 3 is just one example, and the detection range of the image forming apparatus 2 is not limited to this. The detection area 200 is set taking into account the environment in which the image forming apparatus 2 is installed. It is also possible to expand or contract the detection range by controlling the direction of the signal output. The detection area 200 consists of multiple areas corresponding to each direction from which the human presence sensor 100 outputs a signal, and each of these areas can be considered as a "divided area".
[0026] For example, Figure 3 shows divided regions 1 to 12. The motion sensor 100 outputs signals sequentially to divided regions 1 to 12 to detect the presence of a person in each region. Note that the signal output order is not limited to the above. For example, signals may be output sequentially from divided region 12 to 1. Note that the number of divided regions is just an example and is not limited to this.
[0027] Furthermore, it is possible to pre-set areas that should not be detected. For example, if the image forming apparatus 2 is installed in a corner of a room, or in a place with a lot of foot traffic, the motion sensor 100 may react unnecessarily. In this case, by limiting the detection range of the motion sensor 100 in advance, unnecessary detections can be prevented. For example, if the divided regions 7 to 12 shown in Figure 3 are excluded from detection, the output direction of the output unit can be adjusted to configure the system to detect the presence of a person within the range of divided regions 1 to 6. The motion sensor 100 sequentially outputs a signal for each divided region, and by repeating this process, it detects the presence of a person within the detection region 200.
[0028] The human presence sensor 100 in this embodiment can also be provided with multiple independent output units. For example, an output unit corresponding to each region can be provided, and a configuration can be adopted to search for the presence of a person within each region. In this case, taking the divided regions 1 to 12 shown in Figure 3 as an example, in order to search each region individually, a configuration can be adopted in which 12 output units corresponding to each region are provided and signals are output in different directions. In this case, it becomes possible to search each region simultaneously, and the detection accuracy is improved. It should be noted that there is also a configuration in which there are multiple output units fewer than the number of divided regions, and these output units are output at different angles.
[0029] <Power status of the image forming apparatus> Figure 4 is an explanatory diagram illustrating the power state of the image forming apparatus 2. The image forming apparatus 2 in this embodiment has multiple power modes with different power consumption levels. In other words, the image forming apparatus 2 can set multiple power states with different power consumption amounts.
[0030] The image forming apparatus 2, for example, has a "minimum power state" as a first power state, which minimizes power consumption. This minimum power state is one of the power states applied when no jobs are running in order to minimize the power consumption of the apparatus. This minimum power state is sometimes referred to as a sleep state.
[0031] In the minimum power state, the power consumption of the image forming apparatus 2 is kept to the absolute minimum. In the minimum power state, only the minimum necessary functions are activated, such as the human presence sensor 100 and a part of the control unit 10. As an example of this minimum power state, the operation of each functional unit, such as the display unit 40, image reading unit 50, and image forming unit 60, is stopped, except for a part of the operation unit 30 for recovery and the communication unit 70. The operating state of each functional unit in the minimum power state is set taking into consideration the necessary operating state of the image forming apparatus 2.
[0032] Furthermore, the image forming apparatus 2 has a second power state, a "low power state," in which the power consumption is greater than that of the minimum power state. This low power state is a state in which power consumption is reduced while allowing the apparatus to recover more quickly than when it is in the minimum power state. This low power state consumes less power than the standby state described later, and is a power state that lies between the minimum power state and the standby state. The operating state of each functional unit in the low power state is set taking into consideration the necessary operating state of the image forming apparatus 2.
[0033] Furthermore, the image forming apparatus 2 has a third power state, a "standby state" in which various jobs can be executed. In this standby state, each functional unit is activated and ready to execute a job when it receives an operation from the user. For example, it is ready to execute jobs such as printing, scanning, and copying. In this standby state, power consumption increases because it is necessary to turn on the display unit 40 to display the operation screen and to supply power to each functional unit such as the image forming unit 60.
[0034] In this embodiment, the image forming apparatus 2 returns to the standby state via a low-power state from the minimum power state. Alternatively, the image forming apparatus 2 can return directly to the standby state from the minimum power state without going through the low-power state.
[0035] <Reset process for image forming apparatus> Next, the control of the recovery process of the image forming apparatus 2 will be explained using Figures 5 to 7. This control is achieved by the CPU 111 of the control unit 10 reading and executing a program.
[0036] Figure 5 is a flowchart showing the recovery process of the image forming apparatus 2. Figure 6 is a diagram showing the detection distance table of the human presence sensor 100. Figure 6(a) shows the table in which the first detection distance B is stored. Figure 6(b) shows the table in which the second detection distance A is stored. Figure 7 is an explanatory diagram for explaining the change in the detection area 200. Figure 7(a) shows the detection area 200 before changing the detection distance. Figure 7(b) shows the detection area 200 after changing the detection distance. Hereafter, the detection area 200 before changing the detection distance will be referred to as "the first area 200B". The detection area 200 after changing the detection distance will be referred to as "the second area 200A".
[0037] While the image forming apparatus 2 is in standby mode with minimum power, the control unit 10 checks whether the human presence sensor 100 has detected a person in the first region 200B (step 101). If the human presence sensor 100 has not detected a person in the first region 200B (NO in step 101), the control unit 10 enters standby mode.
[0038] If the motion sensor 100 detects a person in the first area 200B (YES in step 101), the control unit 10 changes the detection distance of the motion sensor 100 (step 102). Here, the control unit 10 performs control to shorten the detection distance of the motion sensor. Next, the control unit 10 sets the power state of its own device to a low power state (step 103). Note that steps 102 and 103 can be executed simultaneously or in the reverse order.
[0039] Next, the control unit 10 checks whether or not it has detected a person in the second region 200A (step 104). If the human presence sensor 100 has not detected a person in the second region 200A (NO in step 104), the control unit 10 goes into standby mode. If the human presence sensor 100 has detected a person in the second region 200A (YES in step 104), the control unit 10 sets the power state of its device to standby mode (step 105). Through this series of processes, the image forming apparatus 2 gradually returns itself from the minimum power state to the standby state.
[0040] In this embodiment, the storage unit 20 stores multiple tables that define detection distances. When making a decision in step 101, the table containing the first detection distance B shown in Figure 6(a) is used. The table shown in Figure 6(a) stores "distance B1" as the first detection distance B. Here, "distance B1: 200 (cm)" is shown as an example of the first detection distance B. In step 101, the human presence sensor 100 searches for the presence of a person in the first region 200B that extends in an arc around itself, using "distance B1" as a reference, as shown in Figure 7(a).
[0041] In step 102, when changing the detection distance of the motion sensor 100, the table containing the second detection distance A shown in Figure 6(b) is used. In the table shown in Figure 6(b), "distance A1" is stored as the second detection distance A. Here, "distance A1: 35 (cm)" is shown as an example of the second detection distance A. In step 102, the detection distance of the motion sensor 100 is changed to this "distance A1". In the subsequent step 104, the motion sensor 100 searches for the presence of a person in a second region 200A that extends in an arc around itself, using "distance A1" as a reference, as shown in Figure 7(b).
[0042] Next, the process of resetting the second area 200A will be described. After changing the detection area 200 to the second area 200A, if a predetermined time has elapsed without detecting a person in the second area 200A, the control unit 10 returns the detection area 200 to the first area 200B. At this time, the control unit 10 transitions itself to the minimum power state. Note that a configuration that transitions to the minimum power state via a low power state can also be adopted. This process is performed when a person is detected in the first area 200B but no person is subsequently detected in the second area 200A, or when a person leaves the second area 200A after a job has been executed.
[0043] In the table shown in Figure 6(a), "Distance B1: 200 (cm)" is given as an example for the first detection distance B. However, this setting is just one example, determined considering the energy efficiency of the image forming apparatus 2 and the convenience of the user, and is not limited to this value. For example, the first detection distance B may be set to a value smaller than "200 (cm)," such as "150 (cm)." In this case, the detection range will be narrower than when the first detection distance B is set to "200 (cm)," thus reducing false detections and lowering power consumption. Alternatively, the first detection distance B may be set to a value larger than "200 (cm)," such as "250 (cm)." In this case, the presence of a person can be detected earlier than when the first detection distance B is set to "200 (cm)," allowing for more efficient changes in the power state. This first detection distance B is set considering factors such as the location where the image forming apparatus 2 is installed. Similarly, in the table shown in Figure 6(a), "Distance A1: 35 (cm)" is given as an example for the second detection distance A, but this setting is just one example and is not the only one that can be used.
[0044] In this recovery process, when a person is detected in the second region 200B, the image forming apparatus 2 is temporarily returned to a low-power state. This eliminates the need to return the apparatus to standby mode, thus saving energy. Furthermore, by providing a second region 200A that is smaller than the first region 200B, and adopting a configuration that returns the device to standby mode when a person is detected in the second region 200A, the convenience of the user is also ensured.
[0045] <Other control example 1> Next, another control example 1 of the recovery process of the image forming apparatus 2 will be explained using Figures 6 and 8 to 10. This control example differs from the above control in that when changing the detection distance of the human presence sensor 100, a second detection distance A is set based on the movement of people. This control is realized by the CPU 111 of the control unit 10 reading and executing a program.
[0046] Figure 8 shows the movement patterns of people. If the image forming apparatus 2 is installed in a place with pedestrian traffic, not only will there be people approaching the apparatus to use it, but also people passing by it. Furthermore, the movement paths of people approaching the apparatus vary, sometimes in a straight line and sometimes in a curved line. For example, line A in the figure shows the movement of a person approaching the image forming apparatus 2 in a straight line with the intention of using it. Line B in the figure shows the movement of a person approaching the image forming apparatus 2 in a curved line with the intention of using it. Line C in the figure shows the movement of a person approaching the image forming apparatus 2 from the side with the intention of using it. Line D in the figure shows the movement of a person passing by the periphery of the image forming apparatus 2.
[0047] Figure 9 is a flowchart of another control example 1 of the recovery process of the image forming apparatus 2. Figure 10 is an explanatory diagram to illustrate the change in the detection area 200 in another control example 1. Figure 10(a) shows the detection area 200 before changing the detection distance. Figure 10(b) shows the detection area 200 after changing the detection distance.
[0048] While the image forming apparatus 2 is in standby mode with minimum power, the control unit 10 checks whether the human presence sensor 100 has detected a person in the first region 200B (step 201). If the human presence sensor 100 has not detected a person in the first region 200B (NO in step 201), the control unit 10 enters standby mode.
[0049] If the motion sensor 100 detects a person in the first area 200B (YES in step 201), the control unit 10 changes the detection distance of the motion sensor 100 to "distance A1" (step 202). Subsequently, the control unit 10 changes the detection distance of the motion sensor 100 to "distance A3" for a specific direction that connects the location where the person was detected to the image forming apparatus 2 (step 203). Next, the control unit 10 changes the power state of its own device to a low power state (step 204). Note that the processes from step 202 to step 204 can be executed simultaneously or in any order.
[0050] Next, the control unit 10 checks whether the motion sensor 100 has detected a person in the second region 200A (step 205). If the motion sensor 100 has not detected a person in the second region 200A (NO in step 205), the control unit 10 goes into standby mode. If the motion sensor 100 has detected a person in the second region 200A (YES in step 205), the control unit 10 changes the power state of its own device to standby mode (step 206).
[0051] In this control example as well, when making a decision in step 201, the table containing the first detection distance B shown in Figure 6(a) is used. In step 201, the human presence sensor 100 searches for the presence of a person in the first region 200B based on "distance B1", as shown in Figure 10(a).
[0052] At this time, the motion sensor 100 sequentially searches the first region 200B for each divided region and detects the presence of a person. The first region 200B is composed of divided regions 1 to 12, as shown in Figure 10(a), for example, and the motion sensor 100 sequentially searches divided regions 1 to 12.
[0053] In step 202, when changing the detection distance of the motion sensor 100, the table containing the second detection distance A shown in Figure 6(b) is used. In this control example, two distance data, "distance A1" and "distance A3", are used as the second detection distance A. Note that the relationship between the detection distances is "distance A1" < "distance A3". In step 202, the detection distance of the motion sensor 100 is changed to "distance A1".
[0054] Furthermore, in this control example, in step 203, the detection distance of the human presence sensor 100 is changed to "distance A3," which is longer than "distance A1," for a specific direction that connects the location where a person is detected with the image forming apparatus 2. In the subsequent step 205, the motion sensor 100 searches for the presence of a person in the second region 200A after changing the detection distance of the motion sensor 100.
[0055] For example, consider the case in step 201 when the motion sensor 100 detects a person in the divided region 5 of the first region 200B. In this case, in step 202, the detection distance of the motion sensor 100 is changed to "distance A1", and in step 203, for the segmented area 5 where a person was detected, the detection distance of the motion sensor 100 is changed to "distance A3", which is longer than "distance A1". Then, in step 205, as shown in Figure 10(b), the system searches for the presence of a person in the second region 200A after changing the detection distance of the motion sensor 100.
[0056] In this control example, the second detection distance A is extended in the region corresponding to a specific direction connecting the location where a person is detected and the image forming apparatus 2, compared to other regions where a person is not detected. As a result, as shown in Figure 8, the timing of person detection in the second region 200A can be advanced for a person approaching the image forming apparatus 2 in a straight line. Consequently, the image forming apparatus 2 can return to its normal operation more efficiently, improving convenience.
[0057] <Other control example 2> Next, another control example 2 of the recovery process of the image forming apparatus 2 will be explained using Figures 6, 8, and 11-12. This control example is characterized by the fact that the process for setting the second detection distance A differs from the other control example 1. This control is realized by the CPU 11 of the control unit 10 reading and executing a program.
[0058] Figure 11 is a flowchart of another control example 2 of the recovery process of the image forming apparatus 2. Figure 12 is an explanatory diagram to illustrate the change in the detection area 200 in another control example 2. Figure 12(a) shows the detection area 200 before changing the detection distance. Figure 12(b) shows the detection area 200 after changing the detection distance.
[0059] While the image forming apparatus 2 is in standby mode with minimum power, the control unit 10 checks whether the human presence sensor 100 has detected a person in the first region 200B (step 301). If the human presence sensor 100 has not detected a person in the first region 200B (NO in step 301), the control unit 10 enters standby mode.
[0060] If the motion sensor 100 detects a person in the first area 200B (YES in step 301), the control unit 10 changes the detection distance of the motion sensor 100 to "distance A1" (step 302). Subsequently, the control unit 10 changes the detection distance of the motion sensor 100 to "distance A3" for the area corresponding to a specific direction connecting the location where the person was detected and the image forming apparatus 2 (step 303). Furthermore, the control unit 10 changes the detection distance of the motion sensor 100 to "distance A2" for both sides of the area corresponding to the location where the person was detected (step 304). Next, the control unit 10 changes the power state of its own device to a low power state (step 305). Note that the processes from step 302 to step 305 can be executed simultaneously or in any order.
[0061] Next, the control unit 10 checks whether the motion sensor 100 has detected a person in the second region 200A (step 306). If the motion sensor 100 has not detected a person in the second region 200A (NO in step 306), the control unit 10 goes into standby mode. If the motion sensor 100 has detected a person in the second region 200A (YES in step 306), the control unit 10 changes the power state of its own device to standby mode (step 307).
[0062] In this control example as well, when making a decision in step 301, the table containing the first detection distance B shown in Figure 6(a) is used. In step 301, the human presence sensor 100 searches for the presence of a person in the first region 200B based on "distance B1", as shown in Figure 12(a). At this time, the human presence sensor 100 sequentially searches the first region 200B for each divided region.
[0063] Furthermore, when changing the detection distance of the motion sensor 100 in step 302, the table containing the second detection distance A shown in Figure 6(b) is used. In this control example, three distance data "distance A1", "distance A2", and "distance A3" are used as the second detection distance A. The relationship between the detection distances is "distance A1" < "distance A2" < "distance A3". In step 302, the detection distance of the motion sensor 100 is changed to "distance A1".
[0064] Next, in step 303, the detection distance of the motion sensor 100 is changed to "distance A3" for the area corresponding to the location where a person was detected. Furthermore, in this control example, in step 304, the detection distance of the motion sensor 100 is changed to "distance A2" for areas adjacent to the area corresponding to the location where a person was detected. In the subsequent step 306, the motion sensor 100 searches for the presence of a person in the second region 200A after changing the detection distance of the motion sensor 100.
[0065] For example, consider the case in step 301 when the motion sensor 100 detects a person in the divided region 5 of the first region 200B. In this case, in step 302, the detection distance of the motion sensor 100 is changed to "distance A1", and in step 303, for the segmented area 5 where a person was detected, the detection distance of the motion sensor 100 is changed to "distance A3", which is longer than "distance A1". Furthermore, in step 304, for the divisional regions 4 and 6 adjacent to the divisional region 5 where a person was detected, the detection distance of the motion sensor 100 is changed to "distance A2", which is longer than "distance A1".
[0066] In this case, as shown in Figure 12(b), among the divided regions 1 to 12, the detection distance of the motion sensor 100 is "distance A1" for divided regions 1 to 3 and 7 to 12. Also, the detection distance of the motion sensor 100 is "distance A2" for divided regions 4 and 6. Furthermore, the detection distance of the motion sensor 100 is "distance A3" for divided region 5, which is the region where a person was detected. In the subsequent step 306, the motion sensor 100 searches for the presence of a person in the second region 200A after changing the detection distance.
[0067] In this control example, the detection distance of the human presence sensor 100 is controlled to extend the second detection distance A not only to the divided region corresponding to the area connecting the location where a person is detected and the image forming apparatus 2, but also to adjacent divided regions adjacent to that divided region. Here, it can be understood that within a predetermined range that includes a specific direction connecting the location where a person is detected and the image forming apparatus 2, the detection distance of the human presence sensor 100 is controlled so that the closer the person is to this specific direction, the longer the distance at which a person is detected. In this control example, as shown in Figure 8, the timing of detecting a person in the second region 200A can be advanced even for a person approaching the image forming apparatus 2 in a curved manner.
[0068] <Other control example 3> In the control examples above, the power state of the device was restored in stages. However, in the expected flow of people using the image forming apparatus 2, there are cases where a rapid recovery of the device is required. In this case, the convenience of the person using the device can be improved by directly restoring the device from the minimum power state to the standby state.
[0069] In this control example, when a person is detected within a predetermined area, the device is returned directly from the minimum power state to the standby state. Hereafter, this predetermined area will be referred to as the "direct return area 200C".
[0070] Here, we will explain using the example of a person approaching the image forming apparatus 2 from the side. A person approaching the image forming apparatus 2 from the side is considered more likely to use the image forming apparatus 2 than a person passing in front of it. Therefore, when a person approaches from the side, the system determines that the image forming apparatus 2 will be used and returns the device directly from the minimum power state to the standby state.
[0071] Figure 13 shows the configuration of the detection region 200, which includes the first region 200B and the direct return region 200C. In Figure 13, as an example, a first region 200B is provided from divided regions 2 to 11. In addition, a direct return region 200C is provided for divided regions 1 and 12. In this control example, if the presence of a person is detected in any of the divided regions 2 to 11, the same processing as in any of the control examples above is performed to gradually restore the image forming apparatus 2. On the other hand, if the human presence sensor 100 detects the presence of a person in divided region 1 or 12, the image forming apparatus 2 is restored directly from the minimum power state to the standby state. This allows for efficient restoration operations, taking into account the movement patterns that are assumed to be intended for use of the image forming apparatus 2.
[0072] In the above configuration, direct return regions 200C are provided for the divided regions 1 and 12 extending from both ends of the image forming apparatus 2, but the configuration is not limited to this. Direct return regions 200C can be set in any of the divided regions 1 to 12. Direct return regions 200C are set taking into consideration the environment in which the image forming apparatus 2 is installed.
[0073] If the image forming apparatus 2 is installed in a location accessible from both the left and right sides within an office, for example, by providing a return area 200C directly in the divided areas 1 and 12 that extend to both ends with the image forming apparatus 2 at the center, efficient return of the image forming apparatus 2 can be achieved while taking into account the flow of people. Furthermore, if the image forming apparatus 2 is installed in a corner of a room in an office, the direct return area 200C can be configured to be located in either the divided area 1 or 12 that extends to both ends of the image forming apparatus 2. Furthermore, if, based on the environment in which the image forming apparatus 2 is installed, the divided areas belonging to the movement paths where the image forming apparatus 2 is likely to be used are, for example, divided areas 6 and 7, then a configuration can be adopted in which a direct return area 200C is provided for those divided areas 6 and 7.
[0074] Although embodiments of the present invention have been described above, the technical scope of the present invention is not limited to the above embodiments. In this embodiment, the motion sensor 100 is built into the image forming apparatus 2, but a configuration in which the motion sensor 100 is installed separately from the image forming apparatus 2 can also be adopted. For example, a configuration in which it is installed around the apparatus or on the ceiling of a room can also be adopted. Furthermore, a configuration in which the signal from the motion sensor 100 is output within a 360° range can be adopted. This makes it possible to efficiently reset the apparatus regardless of the direction from which a person approaches.
[0075] Furthermore, although this embodiment describes an image forming apparatus 2 as an example of a device that changes power states in stages, it is not limited to this. For example, it can be applied to various devices such as lighting equipment, air conditioning equipment, signage, and robots, as long as the device can have multiple power states set. In addition, various modifications and substitutions of configurations that do not depart from the technical concept of the present invention are included in this invention.
[0076] (Note) (((1))) An image forming system equipped with a processor, wherein the processor, when it detects a person in a first region where the distance from the human presence sensor is within a first distance range, controls the human presence sensor to detect the person in a second region where the distance from the human presence sensor is shorter than that of the first region, restores the image forming apparatus from a first power state to a second power state with a higher power state than that of the first power state, and when it detects a person in the second region, restores the image forming apparatus to a third power state with a higher power state than that of the second power state. (((2))) The image forming system according to (((1))), characterized in that when the processor detects a person in the first region, it controls the motion sensor to detect the person in the second region at a distance longer than the second distance in a specific direction connecting the location where the person was detected and the image forming apparatus, and when the motion sensor that has been controlled detects a person, it restores the image forming apparatus to the third power state. (((3))) The image forming system according to (((2))), characterized in that when the processor detects a person in the first area, it controls the motion sensor such that the distance at which a person is detected increases as the person approaches the specific direction within a predetermined range including the specific direction, and when the motion sensor that has been controlled detects a person, it restores the image forming apparatus to the third power state. (((4))) The image forming system according to any one of (((1))) to (((3))), characterized in that the processor divides the first region into a plurality of radial regions centered on the image forming apparatus, and when the human presence sensor detects a person in any of the divided regions, the human presence sensor controls the second region to detect the person at a distance longer than the second distance for the divided region in which the person was detected, and when the controlled human presence sensor detects a person, the image forming apparatus is restored to the third power state. (((5))) The image forming system according to (((4))), characterized in that the processor controls the motion sensor to detect a person at a distance longer than the second distance in an adjacent divided region that is adjacent to the divided region in which the person was detected, among other divided regions different from the divided region in which the person was detected, and when the motion sensor that has been controlled detects a person, it restores the image forming apparatus to the third power state. (((6))) The image forming system according to (((5))), characterized in that the processor controls the motion sensor to detect a person in an adjacent divided region at a distance shorter from the motion sensor than the divided region where the person was detected. (((7))) The image forming system according to any one of (((1))) to (((6))), characterized in that the processor, when the human presence sensor detects a person in a predetermined area, restores the image forming apparatus, which is in the first power state, to the third power state. (((8))) The image forming system according to (((7))), characterized in that the predetermined region is provided so as to extend from both ends with the image forming apparatus as the center.
[0077] According to the image forming system described in (((1))), it is possible to improve energy efficiency while ensuring convenience for the people who will use the device. According to the image forming system described in (((2))), when a person is detected in the first region, compared to a configuration in which a person is not detected in the second region at a distance longer than the second distance in a specific direction connecting the place where the person was detected and the image forming apparatus, it is possible to detect the approach of a person who is likely to use the apparatus from a greater distance. According to the image forming system described in (((3))), when a person is detected in the first region, compared to a configuration in which the detection distance for a person is not increased as the person approaches in a specific direction within a predetermined range including a specific direction, the range in which a person's approach can be detected from a greater distance can be expanded, mainly in a specific direction. According to the image forming system described in (((4))), in the region where a person is detected among multiple regions radially divided around the image forming apparatus, the approach of a person who is likely to use the apparatus can be detected early. According to the image forming system described in (((5))), among the multiple regions radially divided around the image forming apparatus, it is possible to detect the approach of a person who is likely to use the apparatus at an early stage in a region adjacent to the region where a person has been detected. According to the image forming system described in (((6))), it is possible to detect the approach of a person who is likely to use the device at an early stage while reducing false detections. According to the image forming system described in (((7))), the image forming apparatus can be efficiently returned to its original position when a person approaches from a predetermined area. According to the image forming system described in (((8))), the image forming apparatus can be efficiently returned to its original position when a person approaches from the regions extending to both ends of the central image forming apparatus. [Explanation of symbols]
[0078] 1…Image forming system, 2…Image forming apparatus, 10…Control unit, 20…Storage unit, 30…Operation unit, 40…Display unit, 50…Image reading unit, 60…Image forming unit, 70…, Communication unit, 100…Human presence sensor
Claims
1. An image forming system equipped with a processor, The aforementioned processor, When a human presence sensor detects a person in a first region where the distance from the sensor is within a first distance range, the human presence sensor is controlled to detect the person in a second region where the distance from the sensor is shorter than that of the first region, and the image forming apparatus, which is in a first power state, is restored to a second power state, which has a higher power state than that of the first power state. When a person is detected in the second region, the image forming apparatus is restored to a third power state, which is higher than the second power state. An image forming system characterized by the following.
2. The aforementioned processor, When a person is detected in the first region, the motion sensor is controlled to detect a person in a specific direction connecting the location where the person was detected and the image forming apparatus at a distance longer than the second distance in the second region. When the human presence sensor, which has undergone the aforementioned control, detects a person, the image forming apparatus is returned to the third power state. The image forming system according to claim 1, characterized by the following:
3. The aforementioned processor, When a person is detected in the first region, the motion sensor is controlled such that, within a predetermined range including the specific direction, the distance at which the person is detected increases as the person approaches that specific direction. When the human presence sensor, which has undergone the aforementioned control, detects a person, the image forming apparatus is returned to the third power state. The image forming system according to claim 2, characterized by the above.
4. The aforementioned processor, The first region is divided into a plurality of radial regions centered on the image forming apparatus, When the motion sensor detects a person in any of the divided regions, the motion sensor is controlled in the divided region where the person was detected to detect the person at a distance longer than the second distance in the second region. When the human presence sensor, which has undergone the aforementioned control, detects a person, the image forming apparatus is returned to the third power state. The image forming system according to claim 1, characterized by the following:
5. The aforementioned processor, With respect to an adjacent divided region that is different from the divided region in which the person was detected, the motion sensor is controlled to detect a person in the second region at a distance longer than the second distance. When the human presence sensor, which has undergone the aforementioned control, detects a person, the image forming apparatus is returned to the third power state. The image forming system according to claim 4, characterized by the above.
6. The aforementioned processor, With respect to the adjacent divided area, the motion sensor is controlled to detect a person at a shorter distance from the motion sensor than the divided area where a person was detected. The image forming system according to claim 5, characterized by the following:
7. The aforementioned processor, When the motion sensor detects a person in a predetermined area, the image forming apparatus, which is in the first power state, is returned to the third power state. The image forming system according to claim 1, characterized by the following:
8. The aforementioned predetermined region is provided so as to extend from both ends with the image forming apparatus as the center. The image forming system according to claim 7, characterized by the following: