Operator detection device

Abstract

The detection device of the present invention includes a light emitting part for irradiating light and a light receiving part for receiving the light irradiated from the light emitting part. The light emitting part and the light receiving part can detect the danger of the operator movement area in the factory in real time and judge whether the operator is in danger.

Description

Technical Field

[0001] The present invention relates to an operator detection device which can detect the status of an operator working inside a closed device in real time. Background Art

[0002] Recently, in the field of display devices such as Organic Light-Emitting Diode (OLED), more and more closed equipment application systems have been adopted. Therefore, the importance of safety devices for protecting workers working in closed spaces has become increasingly high. Summary of the invention

[0003] Technical issues

[0004] The present invention relates to an operator detection device which can grasp the position of an operator located inside a closed operating equipment by using an optical sensor.

[0005] Technical Solution

[0006] The detection device of the present invention includes a light emitting part for irradiating light and a light receiving part for receiving the light irradiated from the light emitting part. The light emitting part and the light receiving part can detect the danger of the operator movement area in the factory in real time and judge whether the operator is in danger.

[0007] Effects of the Invention

[0008] The detection device of the present invention can use optical sensors to monitor workers in a closed factory in real time and continuously, thereby providing a safe system.

[0009] Therefore, the detection device can prevent accidents such as dangerous movements of the equipment, suffocation accidents, and accidental closing of the door by always monitoring the operator. By installing the detection device, the human body parts that can be detected when the operator moves or works in the equipment, such as the operator's ankles, can be detected according to the working space, thereby preventing interference with the work. The detection device can also detect the status of the operator in real time before or after a dangerous situation occurs in the working environment, that is, when the operator cannot perform other operating operations.

[0010] In addition, it is possible to detect in real time whether there are workers inside the equipment or space, thereby limiting the opening and closing of gas valves and the operation of individual robots inside the equipment. In addition, it is possible to prevent collisions with workers and interfering objects such as tools placed there, including ladders.

[0011] In the case where the light emitting part and the light receiving part are arranged in different areas separated from each other in the factory, as an embodiment, for the detection device composed of two light emitting parts and two light receiving parts, the light emitting part and the light receiving part can be respectively located at symmetrical positions on the diagonal line, and the light generated from the light emitting part can reach the light receiving part after passing through the overall moving path of the operator.

[0012] When the light emitting unit rotates to emit light, it is possible to set a region where the light from the light emitting unit reaches the light receiving unit, namely, a detection region, and a non-detection region where the light from the light emitting unit does not reach the light receiving unit.

[0013] The case where the detection area is blocked by a human body or a tool may be a normal mode, while the case where the detection area is not blocked by part of a human body or the blockage occurs in the same place for more than a reference time may be an alarm mode.

[0014] The device may be provided with a protruding portion, and a pair of light-emitting portions and light-receiving portions may be added on both sides of the protruding portion to detect the overall moving path of the operator. The device may be provided with an inclined portion, and a reflecting portion may be added to detect the moving area of ​​the operator expanded by the inclined portion.

[0015] When the light emitting unit and the light receiving unit are installed in the same place, the detection device may additionally include a reflective unit. Compared with the case where the light emitting unit and the light receiving unit are spaced apart, the entire movement area of ​​the operator can be detected by a pair of light emitting units and light receiving units and a plurality of reflective units. When the reflective unit can be configured at a lower cost, the cost can be reduced compared with the case where the light emitting unit and the light receiving unit are spaced apart.

[0016] As described above, depending on the configuration of the factory and engineering equipment, the entire movement area of ​​the workers can be detected by adding a light-emitting unit, a light-receiving unit, or a reflecting unit, so that when the workers are in danger, an alarm can be issued or an attempt can be made to grasp the situation in a timely manner through voice dialogue, and protection can be quickly provided to the workers in danger by locking valves or opening closed doors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 2 This is an explanatory diagram illustrating the detection area and the non-detection area of ​​the present invention.

[0018] Figure 3 is Figure 1 Added illustration of protruding parts.

[0019] Figure 4 yes Figure 1 An illustration of a situation in which the device in the figure forms an inclined surface.

[0020] Figure 5 is Figure 4 An embodiment of adding a reflection portion.

[0021] Figure 6 yes Figure 5 Another embodiment of .

[0022] Figure 7 This is an explanatory diagram of a case where the light emitting unit and the light receiving unit of the present invention are located in the same place.

[0023] Figure 8 Yes Figure 7 An explanatory diagram illustrating the case where a protruding portion is added.

[0024] Explanation of symbols

[0025] 10: Factory, 20: Equipment, 22: Protruding part, 24: Inclined part, 30: Worker moving area, 40: Detection area, 41: First detection area, 42: Second detection area, 44: Extended detection area, 50: Non-detection area, 100: Light-emitting part, 110: First light-emitting part, 120: Second light-emitting part, 130: Third light-emitting part, 200: Light-receiving part, 210: First light-receiving part, 220: Second light-receiving part, 230: Third light-receiving part, 300: Reflecting part, 310: First reflecting part, 320: Second reflecting part, 330: Third reflecting part, 340: Fourth reflecting part, φ1: First angle, φ2: Second angle. DETAILED DESCRIPTION

[0026] Due to the characteristics of display screen engineering, it is often necessary to perform engineering in a closed space, so it is common for workers to work alone in a closed device. In particular, in recent years, more and more closed equipment application systems have been adopted in display equipment fields such as organic light-emitting diodes (OLEDs), and because organic matter is required in organic light-emitting diodes (OLEDs), they are extremely susceptible to oxygen and moisture. Therefore, for workers working in a closed space, the importance of safety devices is becoming increasingly important.

[0027] The worker detection device of the present invention can use optical sensors to monitor workers in closed equipment in real time and continuously, thereby providing a safe system.

[0028] Optical sensors can be used not only to monitor workers staying in a specific area in real time, but also to monitor workers in the factory 10 in real time throughout the enclosed equipment where the project is being performed.

[0029] Accidents such as dangerous movements of equipment, suffocation, and accidental door closing can be prevented by always monitoring the operator. By installing a detection device, the minimum range of the human body, such as the operator's ankle, can be detected according to the working space to prevent interference with the work. After the operator detects the danger, the detection device can detect the operator's status in real time even when the operator cannot perform other operations.

[0030] The safety of workers in equipment and spaces can be monitored in real time, thereby limiting the opening and closing of gas valves and adjusting the movements of individual robots inside the equipment. In addition, collisions between workers and interfering objects such as ladders and robots can be prevented.

[0031] The operator detection device of the present invention may include a light emitting unit 100 that functions as a light source and a light receiving unit 200 for receiving light generated from the light emitting unit 100. The light emitting unit 100 and the light receiving unit 200 may be integrally arranged in a specific area of ​​the factory 10, or may be separated from each other and respectively arranged in different areas of the factory 10. Depending on the type of device, the light emitted from the light emitting unit 100 may be of different types such as infrared rays. The emitted light source has a straight-line property, so the type of light source can be any type as long as it can ensure that the light source emitted from the light emitting unit 100 reaches the light receiving unit 200 after passing the length of the moving path of the operator in the factory 10. Next, light will be taken as an example to illustrate as an embodiment of a light source.

[0032] The following description will take as an example a case where the light emitting unit 100 and the light receiving unit 200 are respectively provided in different areas separated from each other in the factory 10 .

[0033] The purpose of the detection device may be to confirm whether the worker is always on the worker's path in the factory 10. In order to achieve the above-mentioned goal, for a given engineering environment, it is particularly important to detect the worker with a minimum detection device.

[0034] Next, the detection objects may include not only the workers, but also tools such as ladders left after the operation. The detection device can prevent collision accidents caused by the placement of the above-mentioned tools.

[0035] As the most basic embodiment, a worker detection device composed of two light emitting units 100 and two light receiving units 200 can be considered. In the above case, the factory 10 and the equipment 20 can be rectangular. Therefore, the moving path of the worker can be a straight path between the outer wall of the factory 10 and the equipment 20. Therefore, when the light emitting unit 100 and the light receiving unit 200 are respectively located at symmetrical positions on the diagonal line, the light generated from the light emitting unit 100 can pass through all the moving paths of the worker and reach the light receiving unit 200.

[0036] A general sensor device may be, for example, a light curtain. In a light curtain, a protective light curtain may be formed by utilizing a receiver of the light curtain to receive infrared rays emitted from the light curtain. When the infrared rays emitted from the light curtain are blocked by an object, the protective device may transmit a signal for controlling the device. Even when the machine stops working or issues an alarm signal, the operation may effectively avoid the occurrence of dangerous accidents. In a light curtain, a situation where infrared rays are not blocked may be a normal mode, while a situation where at least one of the multiple infrared rays is blocked may be an alarm mode. The detection device of the present invention is a stable device system utilizing a general optical sensor, which is simple to install and can minimize space restrictions compared to conventional light curtains. Therefore, in a light curtain, a situation where infrared rays are not blocked may be a normal mode, while a situation where light is blocked may be an alarm mode.

[0037] However, unlike a general sensor device, the detection device of the present invention can be in normal mode according to its purpose when the path of the light between the light emitting unit 100 and the light receiving unit 200 is blocked by a worker. Even in the case where a worker enters the factory 10, when the worker is not detected on the working path, it can be determined that the worker is pinched by the equipment 20 or the like. In addition, even in the case where the light is blocked because the worker is on the path, if the time spent in one place is greater than the equipment characteristics, the state of the worker can be confirmed by issuing an alarm or voice. Thus, when a worker enters the factory 10, it can be in normal mode when the light generated from the light emitting unit 100 does not reach the light receiving unit 200 and is blocked by the worker, and it can be in alarm mode when the blocked time is greater than the set time or the worker is not detected on a certain worker movement path in the factory 10.

[0038] In addition, in order to detect the safety of the workers, the normal mode and the alarm mode can be set to a variety of different states. For example, when the light receiving part receives the light emitted from the light emitting part, if the path of the irradiated and received light is defined as the detection area, the situation where a worker is detected in the detection area can be the normal mode, and when obstruction occurs in the same place for more than a reference time, it can be changed to the abnormal mode.

[0039] The detection device may also include a control unit. When in normal mode, the control unit may maintain the current state. When in alarm mode, the control unit may take measures such as sounding an alarm or having a manager who confirms the alarm confirm the situation with the factory.

[0040] The light emitting unit 100 of the detection device can be a linear type that emits only straight light or a rotary type that emits light while rotating. For situations such as rectangular factories 10 and equipment 20 where the movement area of ​​the workers is narrow and only a pair of light emitting units 100 and light receiving units 200 that receive and receive light in a straight line are needed to pass through all the movement areas 30 of the workers, a linear light emitting unit 100 can be used. However, in situations where the movement area 30 of the workers is wide and one light emitting unit 100 cannot pass through all the movement paths of each worker, a plurality of light emitting units 100 and light receiving units 200 can be provided. However, the linear light emitting unit 100 as described above may require more equipment costs and thus lead to a decrease in efficiency. Therefore, in the case where the movement area of ​​the workers becomes wider, a rotary light emitting unit 100 can be provided.

[0041] When the operator installs the detection device in the factory 10 for the first time, calibration can be performed after the light-emitting unit 100 and the light-receiving unit 200 are installed in the required positions. Calibration can refer to readjusting a measuring device or other device according to the reference point and scale of the measurement unit. Scale adjustment including zero point adjustment can be performed at the same time. That is, when the rotary light-emitting unit 100 rotates one circle to perform calibration, the area where light reaches the light-receiving unit 200 can be defined as the detection area 40 and the area where light cannot reach the light-receiving unit 200 can be defined as the non-detection area 50. Through the calibration as described above, the detection device can judge whether the light reaches the light-receiving unit 200 only in the set detection area 40, thereby operating an alarm system such as an alarm or an external display.

[0042] Thereby, the detection device may not make an alarm response in the non-detection area 50 regardless of whether the light reaches the light receiving part 200, and may be in normal mode when at least one of the detection areas 40 is blocked, and may be in alarm mode when no blockage occurs in all the detection areas 40 or blockage occurs in one of the detection areas 40 for more than a set time.

[0043] As an embodiment, when the entire factory 10 is inspected using two light-emitting units 100 and two light-receiving units 200, the light-emitting unit 100 may include a first light-emitting unit 110 and a second light-emitting unit 120, and the light-receiving unit 200 may include a first light-receiving unit 210 and a second light-receiving unit 220. The first light-emitting unit 110 may emit light at a first angle φ1 relative to the first light-receiving unit 210, and may emit light at a second angle φ2 relative to the second light-receiving unit 220. The inspection area 40 inspected by the first angle φ1 of the first light-emitting unit 110 may be referred to as a first inspection area 41, and the area inspected by the second angle φ2 of the first light-emitting unit 110 may be referred to as a second inspection area 42. Through the first angle φ1 or the second angle φ2, all operators located in the first inspection area 41 or the second inspection area 52 may be inspected, and according to the size of each angle, the angle of each space occupied by the light-receiving unit 200 may increase accordingly, or a plurality of light-receiving units 200 may be provided.

[0044] A third angle or a fourth angle may be set between the first angle φ1 and the second angle φ2. That is, the first angle φ1 and the second angle φ2 may be angles corresponding to the detection area 40, and the third angle and the fourth angle may be angles corresponding to the non-detection area 50.

[0045] The second light emitting unit 120 may be located at a diagonal position of the first light emitting unit 110. The second light emitting unit 120 may emit light at a second angle φ2 relative to the first light receiving unit 210, and may emit light at a first angle φ1 relative to the second light receiving unit 220. The area detected by the second angle φ2 of the second light emitting unit 120 may be referred to as the third detection area, and the area detected by the first angle φ1 of the second light emitting unit 120 may be referred to as the fourth detection area. At this time, the normal mode may be a situation where obstruction occurs because the operator is located in at least one of the first detection area 41 and even the second detection area 42, while the alarm mode is a situation where no obstruction occurs at any position in the first detection area 41 to the fourth detection area due to the operator. In addition, the alarm mode may also include a situation where the duration of obstruction due to the operator at at least one position in the first detection area 41 to the fourth detection area is much longer than the set time.

[0046] The device 20 may be provided with a protruding portion 22. In the case described above, a pair of light emitting units and a light receiving unit 200 may be additionally provided in the protruding portion 22. For example, three light emitting units and three light receiving units 200 may be provided. When the protruding portion 22 is located between the first regions, a second light emitting unit 120 and a third light receiving unit 230 may be provided at both ends of the protruding portion 22, and the region where the light of the first light emitting unit 110 reaches the third light receiving unit 230 may be the first region, and the region where the light of the second light emitting unit 120 reaches the first light receiving unit 210 may be the fifth region. Therefore, by adding a pair of light emitting units and a light receiving unit 200 to one protruding portion 22, all movement paths of the workers in the factory 10 may be detected. However, in the case where one end of the protruding portion 22 extends to one side of the rectangle to form a stepped shape, only one light receiving unit 200 needs to be added.

[0047] An inclined portion 24 can be formed in the device 20. In the case where the device 20 is inclined, if an outer wall of the factory 10 having the same shape as the device 20 is provided, it can be the same as the case where both are rectangular. That is, only two light-emitting parts and two light-receiving parts 200 are required. However, in the case where only a part of the device 20 is inclined, a reflecting part 300 can be additionally provided. The reflecting part 300 acts as a mirror that simply reflects the light from the light-emitting part, so there is almost no need for additional cost. The inclined portion 24 can be provided with an extended detection area 44. Compared with the case where there is no inclination, in order to detect the extended detection area 44, a light-receiving part 200 can be provided or a reflecting part 300 can be additionally formed.

[0048] As an embodiment, a plurality of light receiving units 200 may be provided along the inclined portion 24 of the factory 10. When a rectangular light emitting unit and a light receiving unit 200 are provided at the corners of the inclined device 20, and the light from the light emitting unit cannot reach the light receiving unit 200 due to the inclination, the position of the operator can be detected by reflecting the light to the light receiving unit 200 using the reflecting unit 300. Calibration may be performed after the first light emitting unit 110 is arranged at the corners of the area formed due to the inclination. As in the case where the factory 10 and the device 20 are both rectangular, a detection area 40 may be formed at the first angle φ1 and the second angle φ2. The angle of the first angle φ1 may be extended by the reflecting unit 300. For example, with the first light receiving unit 210 as a reference, the first angle φ1 of the first light emitting unit 110 may be extended to an angle up to the reflecting unit 300 located at the farthest position. The first detection area 41 using the first angle φ1 may also be extended.

[0049] Therefore, depending on the shapes of the factory 10 and the equipment 20, when there is a worker movement area 30 that cannot be covered by the light-emitting part 100 and the light-receiving part 200 alone, the detection area 40 can be expanded by adding a reflecting part 300, and as a result, all worker movement areas 30 within the factory 10 can be detected.

[0050] That is, the detection range of the present invention may include a specific area within the equipment 20 in addition to the area where workers move within the equipment 20, and the detection device may be installed in multiple different positions in the specific area, such as left and right, top and bottom, which may cause workers to fall or collide, and prohibited entry into the part.

[0051] The light emitting unit 100 and the light receiving unit 200 may be installed at a certain distance from each other as described above, or may be installed at the same place at the same time. When the light emitting unit 100 and the light receiving unit 200 are installed at the same place, the detection device may additionally include a reflecting unit 300.

[0052] The light emitted from the light emitting unit may be reflected by the reflecting unit 300 and then returned to the light receiving unit 200 provided in the same place. For example, the light emitted from the first light emitting unit 110 may be returned to the first light receiving unit 210 after forming a first angle φ1 by the first reflecting unit 310, and the area detected by the first angle φ1 may be referred to as the first detection area 41. The light emitted from the first light emitting unit 110 may be returned to the second light receiving unit 220 after forming a second angle φ2 by the second reflecting unit 320, and the area detected by the second angle φ2 may be referred to as the second detection area 42.

[0053] In the case where the factory 10 and the equipment 20 are both rectangular, a pair of light-emitting parts and light-receiving parts 200 and three reflecting parts can be provided to detect all the worker movement areas 30 of the factory 10. The light emitted from the light-emitting part can be set to return to the light-receiving part 200 after being reflected at a specific angle by each reflecting part 300. That is, the detection device can include a first reflecting part 310, a second reflecting part 320 and a third reflecting part 330 along the counterclockwise direction of the light path. Therefore, the detection device can be composed of only one light-emitting part and one light-receiving part 200, and all the worker movement areas 30 can be detected by adding a simple reflecting part 300 such as a mirror. The second reflecting part 320 can be located at a point-symmetrical position with the light-emitting part and the light-receiving part 200 and the equipment 20 as references.

[0054] When the light emitting unit 100 and the light receiving unit 200 are provided in the same place and the protruding portion 22 is formed in the device 20 , as one embodiment, a pair of the light emitting unit 100 and the light receiving unit 200 may be additionally provided.

[0055] A reflector 300 may be additionally provided at one end of the protruding portion 22, and a pair of light emitting units 100 and light receiving units 200 may be provided at the other end. The additional reflector 300 may be referred to as a fourth reflector 340, and the additional pair of light emitting units 100 and light receiving units 200 may be referred to as a second light emitting unit 120 and a second light receiving unit 220.

[0056] The light of the first light emitting unit 110 may be divided into two beams, one of which may be incident on the second light receiving unit 220 via the first reflecting unit 310, the second reflecting unit 320, and the third reflecting unit 330. The other beam may be reflected by the fourth reflecting unit and incident on the first light receiving unit 210. In order to detect the area divided by the protruding portion, the light emitted from the second light emitting unit 120 may be reflected by the third reflecting unit 330 and incident on the second light receiving unit 220.

[0057] If the first light emitting unit 110 and the fourth reflecting unit 340 are sufficient to detect the area divided by the protruding portion 22, the second light emitting unit 120 and the second light receiving unit 220 can be arranged at the position of the third reflecting unit 330 to detect all areas. That is, according to various forms of the protruding portion 22 of the operator movement area 30, the overall detection area can be expanded by additionally equipping the light emitting unit 100 and the light receiving unit 200, and complex areas can be detected by additionally adding the reflecting unit 300.

[0058] Therefore, as another embodiment, when the area of ​​the protruding portion 22 includes a further expanded worker movement area 30 in addition to the protruding portion 22, in addition to adding a pair of light-emitting portions and a light-receiving portion, all working spaces can be detected by equipping a plurality of reflecting portions 300.

[0059] When the light emitting unit 100 and the light receiving unit 200 are arranged at the same place and form the inclined portion 24, the entire work space can be detected by additionally arranging the reflecting unit 300. For example, the light emitting unit 100 and the light receiving unit 200 can be arranged at one end of the inclination and the reflecting unit 300 can be additionally arranged at the original positions of the light emitting unit and the light receiving unit, thereby expanding the area reached by the light to the area formed by the inclination by additionally arranging the reflecting unit 300.

[0060] As described above, in order to detect the moving area of ​​all workers, the detection device may additionally be equipped with a light emitting unit 100 or a light receiving unit 200 or an additional reflecting unit 300 in either case where the light emitting unit and the light receiving unit are arranged at a certain distance from each other or at the same place.

[0061] Therefore, the detection in the detection device of the present invention may refer to identifying the operator entering the equipment and confirming whether the operator is located at a certain position in the operator movement area 30 inside the factory 10. After the operator enters the factory 10, an alarm may be issued when the operator cannot be detected at any position or stays at one position for too long due to an accident such as being caught by the equipment 20, that is, when the operator stays at a certain position for more than a certain time set. Therefore, the goal of the detection device may be to construct a safety system that prevents dangerous actions, suffocation accidents, and accidental door closing accidents in the factory 10 by always detecting the operator.

Claims

1. A detection device arranged in a rectangular factory, characterized in that: include: A light emitting part, used for irradiating light; as well as, A light receiving part, used for receiving the light emitted from the light emitting part; as well as A reflecting part, which expands the detection area by the light emitting part and the light receiving part, Calibration is performed when the light emitting unit, the light receiving unit and the reflecting unit are first installed in the factory. The light emitting portion rotates to emit light, When the light emitting unit rotates one circle for the calibration, the area where the light can reach the light receiving unit is set as the detection area, and the area where the light cannot reach the light receiving unit is set as the non-detection area. The alarm system is operated only for the detection area set by the calibration to determine whether the light reaches the light receiving part. The light emitting unit, the light receiving unit and the reflecting unit detect the danger of the worker moving area in the factory in real time and judge whether the worker is in danger. Wherein, the factory is equipped with equipment, When the device is provided with a protruding portion, the light emitting portion and the light receiving portion or the reflecting portion are additionally provided on both sides of the protruding portion. When the device is equipped with an inclined portion, the light receiving portion or the reflecting portion is additionally equipped in order to detect the worker moving area expanded by the inclined portion. When the device is equipped with the inclined portion and the light receiving unit is additionally equipped, a plurality of the additional light receiving units are provided along the inclined portion. When the device is equipped with the inclined portion and is additionally equipped with the reflecting portion, the light-emitting portion includes a first light-emitting portion located in the corner area of ​​the device formed by the inclined portion, and the reflecting portion is located in the corner area of ​​the device and reflects a portion of the light emitted from the first light-emitting portion to the light-receiving portion.

2. The detection device according to claim 1, characterized in that: The situation where the detection area is blocked by a part of the human body is a normal mode. The alarm mode is set when the detection area is not blocked by a part of the human body or when the blockage occurs in the same place for more than a reference time.

3. The detection device according to claim 1, characterized in that: The situation where the operator is detected in the detection area is a normal mode, When the worker blocks the same place in the detection area for a period of time exceeding a reference time, an alarm mode is set.

4. The detection device according to claim 1, characterized in that: The light emitting unit and the light receiving unit are arranged in the same place.

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