Biological information collection device and method thereof

Abstract

A biological information collection device and method, the biological information collection device comprising: a bracket (10); a carrier (20) movably arranged on the bracket (10); a position sensor (30) provided on the carrier (20) and configured to sense the relative position of a collection object (CO) and the carrier (20) at least in the direction of height; a biological information collector (40) arranged on the carrier (20) and configured to collect biological information of the collection object (CO); a lifting driver (50) in drive connection with the carrier (20) and configured to drive the carrier (20) to ascend and descend relative to the bracket (10); and a controller (60) in signal connection with the position sensor (30), the biological information collector (40), and the lifting driver (50), and configured to enable the lifting driver (50) to drive the carrier (20) on the basis of the sensing result of the position sensor (30), and enable the biological information collector (40) to collect biological information of the collection object (CO).

Description

Biological information collection device and method

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on and claims priority to the Chinese patent application with application number 202311779765.5 and application date December 22, 2023. The disclosed content of the Chinese patent application is hereby introduced as a whole into this application. Technical Field

[0003] The present disclosure relates to the field of information identification, and in particular to a biometric information collection device and method thereof. Background Art

[0004] In today's ever-changing and complex social environment, security has become a major concern in people's daily lives. To address various potential threats and risks, the application of facial biometric recognition technologies such as face and iris recognition is becoming increasingly popular.

[0005] In related technologies, facial biometric information collection devices include fixed, single-axis rotating, and lift-type devices. Fixed-type devices have cameras with fixed positions that cannot be adjusted. Single-axis rotating devices have cameras that can be adjusted around their axis to a certain angle. Lift-type devices use a fixed camera to capture scene images. After obtaining rough height information from the scene images captured by the fixed camera, the camera is adjusted vertically to obtain a qualified image. Summary of the Invention

[0006] After research, the inventor found that the fixed acquisition device in the related technology has a fixed viewing range, which requires people to actively adapt, affecting the user experience; the single-axis rotation acquisition device can only adapt to people of different heights within a smaller range, but the acquired image may be deformed; the lifting acquisition device uses a fixed camera to determine the position of the face, which is easily affected by external light and may affect the acquisition quality when used in direct sunlight or darker environments. Moreover, the fixed camera and the acquisition camera are independent of each other in layout. When the relative position of the two changes, the coordinate binding relationship needs to be recalibrated, affecting work efficiency.

[0007] In view of this, embodiments of the present disclosure provide a biometric information collection device and method thereof, which can improve the adaptability of biometric information collection.

[0008] In one aspect of the present disclosure, a biometric information collection device is provided, comprising:

[0009] Bracket;

[0010] a carrier, movably disposed on the bracket;

[0011] a position sensor, disposed on the carrier, configured to sense a relative position between the collection object and the carrier in at least a height direction;

[0012] a biological information collector, disposed on the carrier and configured to collect biological information of the collection object;

[0013] a lifting drive, drivingly connected to the carrier and configured to drive the carrier to rise and fall relative to the support; and

[0014] The controller is signal-connected to the position sensor, the biological information collector and the lifting driver, and is configured to enable the lifting driver to drive the carrier and enable the biological information collector to collect biological information of the collection object according to the sensing result of the position sensor.

[0015] In some embodiments, the position sensors include: a first group of position sensors and a second group of position sensors arranged in the height direction, and at least a portion of a sensing range of the first group of position sensors is higher than a sensing range of the second group of position sensors.

[0016] In some embodiments, the biological information collector is located between the first group of position sensors and the second group of position sensors.

[0017] In some embodiments, the bio-information collector is located between a portion of the position sensors and another portion of the position sensors in the first group of position sensors, and / or the bio-information collector is located between a portion of the position sensors and another portion of the position sensors in the second group of position sensors.

[0018] In some embodiments, the position sensor includes at least one of an infrared sensor, an ultrasonic sensor, and a lidar.

[0019] In some embodiments, the biometric information of the object to be collected includes facial information of the user, and the biometric information collector includes:

[0020] a first camera, configured to collect the facial information;

[0021] The controller is configured to drive the carrier to rise or fall to a height position at which the user's face is at least partially covered by the field of view of the first camera based on the sensing result of the position sensor on the user's height position, so that the first camera can capture the user's facial image.

[0022] In some embodiments, the biometric information collection device further comprises:

[0023] a rotation driver, drivingly connected to the carrier and configured to drive the carrier to rotate relative to the bracket,

[0024] The controller is connected to the rotation driver signal and is configured to cause the rotation driver to drive the carrier to reduce the first offset based on the first offset of the position of the first feature point of the user's facial image acquired by the first camera relative to the preset position of the first feature point, so as to capture the user's facial image through the first camera.

[0025] In some embodiments, the biometric information of the object to be collected further includes iris information of the user, and the biometric information collector further includes:

[0026] a second camera configured to collect the iris information;

[0027] The controller is configured to cause the rotation driver to drive the carrier to reduce the second offset based on the second offset of the position of the second feature point of the facial image of the user acquired by the first camera relative to the preset position of the second feature point, so as to capture the iris image of the user through the second camera.

[0028] In some embodiments, the biometric information collection device further comprises:

[0029] A distance sensor is provided on the carrier and is configured to sense the distance information of the collection object relative to the carrier.

[0030] The controller is connected to the distance sensor signal and is configured to adjust the focus of the second camera according to the sensing result of the distance sensor, so as to collect the user's iris information through the second camera.

[0031] In some embodiments, the biological information collector further comprises:

[0032] The fill light component is configured to provide fill light for the captured object.

[0033] In some embodiments, the lifting drive comprises:

[0034] The mounting plate is movable in the height direction relative to the bracket,

[0035] a transmission mechanism, disposed on the bracket and connected to the mounting plate; and

[0036] A power element is provided on the bracket and is drivingly connected to the transmission mechanism, and is configured to drive the mounting plate to move in the height direction through the transmission mechanism.

[0037] Wherein, the carrier is detachably arranged on the mounting plate.

[0038] In some embodiments, the transmission mechanism includes: a ball screw transmission structure, a rack and pinion transmission structure, or a sprocket and chain transmission structure.

[0039] In some embodiments, the power element comprises an electric motor or a pneumatic motor.

[0040] In some embodiments, the bracket is provided with a first limiting portion and a second limiting portion spaced apart along the height direction, the first limiting portion is configured to limit the highest movement position of the carrier on the bracket, and the second limiting portion is configured to limit the lowest movement position of the carrier on the bracket.

[0041] In one aspect of the present disclosure, a method for collecting biological information using the aforementioned biological information collection device is provided, comprising:

[0042] sensing a relative position between the collection object and the carrier in at least a height direction by a position sensor provided on the carrier;

[0043] According to the sensing result of the position sensor, the height of the carrier is adjusted by a lifting driver;

[0044] The biological information of the collection object is collected by the biological information collector arranged on the carrier.

[0045] In some embodiments, the biometric information of the collected object includes facial information of a user, and the biometric information collector includes a first camera for collecting the facial information;

[0046] The step of driving the carrier to adjust its height by a lifting drive according to the sensing result of the position sensor includes:

[0047] Based on the sensing result of the position sensor on the height position of the user, the lifting drive drives the carrier to rise or fall to a height position at which the user's face is at least partially covered by the field of view of the first camera, so that the first camera can capture the user's facial image.

[0048] In some embodiments, the step of collecting the biological information of the subject by the biological information collector provided on the carrier includes:

[0049] collecting facial information of the user through the first camera;

[0050] The biometric information collection device further includes a rotation driver drivingly connected to the carrier, and before the step of collecting the user's facial information through the first camera, the biometric information collection method further includes:

[0051] acquiring a facial image of the user using the first camera;

[0052] Determining a first offset of a position of a first feature point of the user's facial image relative to a preset position of the first feature point;

[0053] The rotation driver drives the carrier according to the first offset to reduce the first offset, so as to collect the user's facial information through the first camera.

[0054] In some embodiments, the biometric information of the collected object further includes iris information of the user, and the biometric information collector further includes a second camera for collecting the iris information;

[0055] The step of collecting the biological information of the collection object by the biological information collector provided on the carrier further includes:

[0056] The user's iris information is collected through the second camera.

[0057] In some embodiments, before the step of collecting the user's iris information through the second camera, the biometric information collection method further includes:

[0058] determining a second offset of a position of a second feature point of the user's facial image relative to a preset position of the second feature point;

[0059] The rotation driver drives the carrier according to the second offset to reduce the second offset, so as to collect the user's iris information through the second camera.

[0060] In some embodiments, the biometric information collection device further comprises a distance sensor disposed on the carrier;

[0061] Before the step of determining a second offset of a position of a second feature point of the user's facial image relative to a preset position of the second feature point, the biometric information collection method further includes:

[0062] The second camera is caused to adjust its focus according to the sensing result of the distance sensor, so as to collect the iris information of the user through the second camera.

[0063] Therefore, the disclosed embodiment uses a lifting drive to drive a carrier equipped with a position sensor and a biometric information collector. The lifting drive, in response to a controller's instructions, drives the carrier based on the sensing results of the position sensor, and causes the biometric information collector to collect biometric information of the subject. Compared to the related art method of determining the relative position of the subject using a fixed camera, the position sensor used in the disclosed embodiment has better adaptability to different external lighting environments, making the determination of the relative position of the subject more stable and reliable, and reducing the adverse effects of position errors on collection quality. Furthermore, the position sensor and biometric information collector are both mounted on the carrier and rise and fall with the carrier, allowing for adaptive adjustment to the height of the subject, meeting the requirements for biometric information collection and improving collection quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0065] The present disclosure can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0066] FIG1 is a schematic diagram of control relationships according to some embodiments of the biometric information collection device disclosed herein;

[0067] 2 and 3 are schematic diagrams of external structures of some embodiments of the biometric information collection device according to the present disclosure;

[0068] FIG4 is a schematic diagram of the installation structure of a carrier in some embodiments of the biometric information collection device according to the present disclosure;

[0069] FIG5 is a schematic diagram of the internal structure of some embodiments of the biometric information collection device according to the present disclosure;

[0070] FIG6 is a schematic diagram of control relationships according to other embodiments of the biometric information collection device disclosed herein;

[0071] FIG7 is a schematic diagram of the angle adjustment achieved by the biological information collector when the rotary driver drives the carrier to pitch according to some embodiments of the biological information collection device disclosed herein;

[0072] FIG8 is a schematic diagram of the sensing angle ranges respectively achieved by the upper and lower groups of position sensors in some embodiments of the biometric information collection device according to the present disclosure;

[0073] FIG9 is a flowchart illustrating some embodiments of the method for collecting biological information according to the present disclosure.

[0074] It should be understood that the size of each part shown in the drawings is not drawn according to the actual proportional relationship.In addition, the same or similar reference numerals represent the same or similar components. DETAILED DESCRIPTION

[0075] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure, its application, or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of parts and steps, the composition of materials, numerical expressions, and numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0076] The terms "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The terms "include" or "comprises" and similar terms mean that the elements before the term include the elements listed after the term, and do not exclude the possibility of also including other elements. The terms "upper", "lower", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0077] In the present disclosure, when a specific device is described as being located between a first device and a second device, an intervening device may or may not be present between the specific device and the first device or the second device. When a specific device is described as being connected to another device, the specific device may be directly connected to the other device without an intervening device, or may be not directly connected to the other device but with an intervening device.

[0078] All terms (including technical or scientific terms) used in this disclosure have the same meaning as those understood by one of ordinary skill in the art to which this disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in, for example, general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or highly formal sense, unless explicitly defined herein.

[0079] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0080] In related technologies, facial biometric information collection devices include fixed, single-axis rotating, and lift-type devices. Fixed-type devices have cameras with fixed positions that cannot be adjusted. Single-axis rotating devices have cameras that can be adjusted around their axis to a certain angle. Lift-type devices use a fixed camera to capture scene images. After obtaining rough height information from the scene images captured by the fixed camera, the camera is adjusted vertically to obtain a qualified image.

[0081] After research, the inventor found that the fixed acquisition device in the related technology has a fixed viewing range, which requires people to actively adapt, affecting the user experience; the single-axis rotation acquisition device can only adapt to people of different heights within a smaller range, but the acquired image may be deformed; the lifting acquisition device uses a fixed camera to determine the position of the face, which is easily affected by external light and may affect the acquisition quality when used in direct sunlight or darker environments. Moreover, the fixed camera and the acquisition camera are independent of each other in layout. When the relative position of the two changes, the coordinate binding relationship needs to be recalibrated, affecting work efficiency.

[0082] In view of this, embodiments of the present disclosure provide a biometric information collection device and method thereof, which can improve the adaptability of biometric information collection.

[0083] Figure 1 is a schematic diagram of the control relationship of some embodiments of the bio-information collection device according to the present disclosure. Figures 2 and 3 are schematic diagrams of the external structure of some embodiments of the bio-information collection device according to the present disclosure.

[0084] With reference to Figures 1-3, embodiments of the present disclosure provide a biometric information collection device, comprising: a support 10, a carrier 20, a position sensor 30, a biometric information collector 40, a lifting actuator 50, and a controller 60. The carrier 20 is movably mounted on the support 10. The position sensor 30 is mounted on the carrier 20 and configured to sense the relative position of a collection object (CO) and the carrier 20, at least in the height direction. The biometric information collector 40 is mounted on the carrier 20 and configured to collect biometric information of the collection object CO. The lifting actuator 50 is drivably connected to the carrier and configured to drive the carrier 20 upward and downward relative to the support 10. The controller 60 is signal-connected to the position sensor 30, the biometric information collector 40, and the lifting actuator 50. Based on the sensing results of the position sensor 30, the lifting actuator 50 is configured to drive the carrier 20 and to cause the biometric information collector 40 to collect biometric information of the collection object CO.

[0085] In this embodiment, a carrier equipped with a position sensor and a biological information collector is driven by a lifting driver. Through the instructions of the controller, the lifting driver drives the carrier according to the sensing results of the position sensor, and the biological information collector collects the biological information of the collection object.

[0086] Compared with the method of determining the relative position of the collection object by fixing a camera in related technologies, the position sensor used in this embodiment has better adaptability to different external light environments, making the determination of the relative position of the collection object more stable and reliable, reducing the adverse effects of position errors on the collection quality, and the position sensor and the biometric information collector are both arranged on the carrier, and rise and fall together with the carrier, and can be adaptively adjusted according to the height of the collection object to meet the needs of biometric information collection, which is conducive to improving the collection quality and efficiency.

[0087] The support 10 can be fixed or movably arranged in the work site for biometric information collection. The support 10 can be independent of the work site, or can be realized by a civil structure in the work site or by a device, rack or other structure arranged in the work site.

[0088] The carrier 20 can move relative to the bracket 10. The relative movement here can include relative translation, relative rotation, or a combination of relative translation and relative rotation. The carrier 20 can be a plate, a box, or any other structure that can realize the installation and support of components such as sensors and collectors.

[0089] The position sensor 30 can sense the relative position of the collection object CO and the carrier 20 in the height direction. In addition, in some embodiments, it can also sense the relative position of the collection object CO and the carrier 20 in other directions, such as the relative position in the left-right direction. The collection object CO here can include a living being containing biological information, such as a human. In some embodiments, the collection object CO can also include animals or plants. The position sensor 30 can select an appropriate sensor type based on specific requirements (such as detection range, cost, and / or accuracy), such as at least one of an infrared sensor, an ultrasonic sensor, and a lidar.

[0090] In some embodiments, the position sensor 30 may employ an infrared sensor, such as an infrared diffuse reflectance sensor, to achieve high sensing accuracy. In some embodiments, the position sensor 30 may employ an ultrasonic sensor, which offers a wider sensing range and is less susceptible to ambient light. In some embodiments, the position sensor 30 may employ a laser radar, such as a multi-line laser radar, to achieve highly accurate detection of the CO location of the target.

[0091] The biometric information collector 40 can collect biometric information of a subject CO. For example, if the subject is a person, the biometric information may include at least one of facial information, fingerprint information, voiceprint information, iris information, palm print information, and earlobe information. In some embodiments, the biometric information collector 40 may include a camera capable of collecting facial information, such as a visible light camera, or a camera capable of collecting iris information, such as an infrared camera.

[0092] In Figure 1 , solid lines between blocks represent physical connections, while dashed lines between blocks represent signal connections. The controller 60 is signal-connected to the position sensor 30, the bio-information collector 40, and the lift actuator 50. These signal connections can be achieved through wired or wireless signal transmission. The controller 60 can be implemented using one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), processors, microcontrollers, microprocessors, or other electronic components.

[0093] The controller 60 can control the lifting actuator 50 to drive the carrier 20 based on the sensing results of the position sensor 30, and can also control the bio-information collector 40 to collect bio-information of the subject CO. The process of driving the carrier 20 can precede or be performed simultaneously with the bio-information collection process of the bio-information collector 40. In some embodiments, the lifting and lowering of the carrier 20 can also be performed between the collection of multiple types of bio-information.

[0094] Figure 4 is a schematic diagram of the mounting structure of a carrier in some embodiments of the biometric information collection device according to the present disclosure. Referring to Figure 4 , in some embodiments, the position sensor 30 includes: a first group of position sensors 31a, 31b and a second group of position sensors 32a, 32b arranged in the height direction, with at least a portion of the sensing range of the first group of position sensors 31a, 31b being higher than the sensing range of the second group of position sensors 32a, 32b.

[0095] Here, at least part of the sensing range of the first group of position sensors is set to be higher than the sensing range of the second group of position sensors, so that the first group of position sensors and the second group of position sensors detect the collection object in different height ranges, and the specific height position of the collection object relative to the two groups of position sensors can be determined, thereby further determining whether the height of the carrier needs to be adjusted.

[0096] For example, the position of the collection object relative to the height range defined by the first group of position sensors and the second group of position sensors is determined based on the presence or absence of sensing signals from the first group of position sensors and the presence or absence of sensing signals from the second group of position sensors. If the position is higher than the height range, the lifting drive adjusts the carrier upward; if the position is lower than the height range, the lifting drive adjusts the carrier downward; if the position is already within the height range, the height of the carrier does not need to be adjusted.

[0097] In Figure 4 , the biometric information collector 40 can be located between the first set of position sensors 31a, 31b and the second set of position sensors 32a, 32b. This allows the biometric information collector 40 to more conveniently collect the subject's biometric information when the subject's height falls within the height range defined by the first and second sets of position sensors.

[0098] Taking facial information as an example, the height position of a person's head can be determined through the first group of position sensors and the second group of position sensors. Correspondingly, the cameras located at the first group of position sensors and the second group of position sensors can conveniently collect facial information of users of different heights.

[0099] The first group of position sensors may include a single position sensor or multiple position sensors. In the case of multiple position sensors, the biometric information collector 40 may be located between a portion of the position sensors 31a and another portion of the position sensors 31b in the first group of position sensors. The second group of position sensors may include a single position sensor or multiple position sensors. In the case of multiple position sensors, the biometric information collector 40 may be located between a portion of the position sensors 32a and another portion of the position sensors 32b in the second group of position sensors.

[0100] For example, in Figure 4, the first group of position sensors includes two position sensors spaced laterally apart, namely position sensor 31a and position sensor 31b. The second group of position sensors also includes two position sensors spaced laterally apart, namely position sensor 32a and position sensor 32b. Biometric information collector 40 is located between position sensors 31a and 31b, and between position sensors 32a and 32b. Position sensors located on both sides of the sensor can identify not only the height position of the subject being collected, but also the lateral extent of the subject, thus reducing the risk of collection failure due to misalignment during biometric information collection.

[0101] The first and second position sensor groups can be the same type of position sensors, such as infrared sensors. They can also be different types of position sensors, such as infrared sensors and ultrasonic sensors, respectively. In other embodiments, the position sensor 30 can be a single position sensor, such as a multi-line laser radar.

[0102] 4 , in some embodiments, the biometric information of the acquisition object CO includes facial information of the user, and the biometric information collector 40 includes a first camera 41 for acquiring the facial information. Optionally, the first camera 41 may be a visible light portrait camera.

[0103] Accordingly, the controller 60 is configured to drive the carrier 20 to rise or fall to a height position at which the user's face is at least partially covered by the field of view of the first camera 41 based on the sensing result of the position sensor 30 on the user's height position, so that the first camera 41 can capture the user's facial image.

[0104] In this embodiment, the field of view of the first camera can be set with reference to the height range determined by the position sensor in the previous embodiment, so that after the height of the carrier is adjusted according to the sensing results of the position sensor, the user's face can be in the field of view of the first camera, thereby improving the collection efficiency.

[0105] To improve the facial information collection effect of the first camera 41, referring to FIG4 , in some embodiments, the biometric information collector 40 further includes a fill light component 43. The fill light component 43 is configured to provide fill light for the collection object CO. Before or during facial information collection by the first camera 41, the controller 60 can, through a signal connection with the fill light component 43, issue a command to the fill light component 43 to cause the fill light component 43 to provide fill light for the collection object CO.

[0106] The fill light component 43 may include a point light source, a line light source, or a surface light source. In FIG4 , the fill light component 43 may include two point light sources located on the left and right sides of the first camera 41 .

[0107] In Figure 4 , the carrier 10 may also be provided with an information prompt component 90 to provide information prompts. For example, the information prompt component 90 may include a display capable of displaying device information of the biometric information collection device, collected user information, and / or prompting the user to adjust their position. The display may be a touch screen capable of human-computer interaction. The information prompt component 90 may also include a prompting element capable of providing information in the form of sound, light, or other means, such as a speaker or warning light.

[0108] FIG5 is a schematic diagram of the internal structure of some embodiments of the bio-information collection device according to the present disclosure. Referring to FIG1 and FIG5, in some embodiments, the lifting drive 50 includes a mounting plate 51, a transmission mechanism 52, and a power element 53. The mounting plate 51 is movable relative to the bracket 10 in the height direction. The transmission mechanism 52 is provided on the bracket 10 and connected to the mounting plate 51. The power element 53 is provided on the bracket 10 and is connected to the transmission mechanism 52 for driving, and is configured to drive the mounting plate 51 to move in the height direction through the transmission mechanism 52. The carrier 20 is detachably provided on the mounting plate 51. In this way, the power element 53 can drive the mounting plate 51 via the transmission mechanism 52, and the carrier 20 can be installed and removed as a whole relative to the mounting plate 51 together with devices such as the position sensor 30 and the bio-information collector 40 provided thereon to facilitate maintenance.

[0109] In some embodiments, the transmission mechanism 51 includes a ball screw transmission structure, a rack and pinion transmission structure, or a sprocket and chain transmission structure. For example, in FIG5 , the transmission mechanism 51 includes a ball screw transmission structure, which includes a ball screw. The ball screw 52 is disposed on the bracket 10 and extends in the height direction. The mounting plate 51 is threadedly engaged with the ball screw.

[0110] Ball screw transmissions offer high transmission efficiency and precision, enabling more precise height adjustment of the carrier and improving the accuracy of biometric data collection. Rack and pinion transmissions offer high precision and stability, and can withstand heavy loads. Sprocket and chain transmissions offer high efficiency and environmental adaptability.

[0111] In some embodiments, the power element 53 comprises an electric motor or a pneumatic motor. Electric motors offer high efficiency, reliable operation, and ease of control. Optionally, the motor comprises a servo motor to further enhance adjustment accuracy. Pneumatic motors offer enhanced environmental adaptability and safety.

[0112] Referring to Figure 5, the power element 53 can use a motor to connect to the ball screw through a coupling 54 to drive the ball screw to rotate, and through the threaded cooperation between the ball screw and the mounting plate 51, the mounting plate 51 can be driven to rise or fall in the height direction, thereby driving the carrier 20 to rise or fall.

[0113] In FIG5 , the bracket 10 may be provided with a first limit portion 11 and a second limit portion 12 spaced apart along the height direction. The first limit portion 11 is configured to limit the highest movement position of the carrier 20 on the bracket 10, and the second limit portion 12 is configured to limit the lowest movement position of the carrier 20 on the bracket 10.

[0114] The first and second limiters can physically restrict the highest and lowest positions of the carrier on the bracket, or they can be achieved by the controller logically setting the lifting range of the lifting actuator. The limiting action of the first and second limiters effectively reduces the risk of damage to the equipment caused by the carrier moving beyond the permitted range.

[0115] FIG6 is a schematic diagram of control relationships according to other embodiments of the biometric information collection device disclosed herein. Referring to FIG6 , in some embodiments, the biometric information collection device further includes a rotational driver 70. The rotational driver 70 is in driving connection with the carrier 20 and is configured to drive the carrier 20 to rotate relative to the bracket 10. The controller 60 is signal-connected to the rotational driver 70 and is configured to cause the rotational driver 70 to drive the carrier 20 to reduce the first offset relative to a preset position of a first feature point in the facial image of the user captured by the first camera 41, based on the first offset relative to the first feature point, so as to capture the facial image of the user via the first camera 41.

[0116] The rotation driver 70 can be a motor or pneumatic motor capable of outputting torque to drive the carrier 20. Specifically, the carrier 20 can be pivotally connected to the mounting plate 51 of the lift driver 50 via a pivot shaft. The rotation driver 70 can be disposed between the carrier 20 and the mounting plate 51 of the lift driver 50 to cause the carrier 20 to swing relative to the mounting plate 51 by a predetermined angle. In other embodiments, the rotation driver 70 can be disposed between the lift driver 50 and the bracket 10, and the swinging of the lift driver 50 relative to the bracket 10 can drive the carrier 20 to swing relative to the bracket 10 by a predetermined angle.

[0117] The first camera can capture a facial image of the user, where the first feature point can be a predefined facial feature point, such as the nose. The nose's actual position in the facial image captured by the first camera is compared with the preset position where it would normally be located, and the angle of the carrier is adjusted based on the degree of offset. Because the biometric information collector and the carrier are relatively fixed, adjusting the angle of the carrier allows for fine-tuning of the biometric information collector's collection range, thereby obtaining more accurate facial information.

[0118] In some embodiments, the biometric information of the object CO may further include iris information of the user. Referring to FIG4 , the biometric information collector 40 may further include a second camera 42. Optionally, the second camera 42 may be an iris camera capable of capturing iris images.

[0119] The second camera 42 is configured to capture the iris information. The controller 60 is configured to cause the rotation driver 70 to drive the carrier 20 to reduce the second offset based on a second offset between the position of a second feature point of the user's facial image captured by the first camera 41 and a preset position of the second feature point, so that the second camera 42 can capture the user's iris image.

[0120] Considering that facial and iris images require different positions during acquisition, especially iris images, which require higher position accuracy, after the first camera has acquired the user's facial image, the carrier angle can be further adjusted based on the second feature points of the facial image. The second feature points can be predefined facial features different from the first feature points, such as eyes or eyebrows.

[0121] By comparing the preset position of the second feature point with the actual captured position to determine the second offset, the angle of the carrier is fine-tuned, so that the second camera can capture the iris image more accurately, thereby improving the reliability of the detection result.

[0122] 4 and 6 , in some embodiments, the biometric information collection device further includes a distance sensor 80. The distance sensor 80 is disposed on the carrier 20 and is configured to sense the distance information of the collection object CO relative to the carrier 20. The controller 60 is signal-connected to the distance sensor 80 and is configured to adjust the focus of the second camera 42 based on the sensing result of the distance sensor 80 so as to collect the user's iris information through the second camera 42.

[0123] The distance sensor can be an ultrasonic distance sensor or a distance sensor based on other principles, such as infrared or laser distance sensors. The distance of the object to be captured relative to the carrier, as sensed by the distance sensor mounted on the carrier, can be used to determine the distance of the second camera relative to the object. Based on this distance, the focus of the second camera can be adjusted to enable it to capture a clear iris image, thereby improving the quality of the captured iris information.

[0124] Figure 7 is a schematic diagram illustrating the angle adjustment achieved by the biometric information collector when a rotational driver drives the carrier to pitch in some embodiments of the biometric information collection device disclosed herein. In Figure 7, the dotted lines indicate the biometric information collector's acquisition range, which can be a sector-shaped acquisition area. By positioning the head and partial torso of a subject (e.g., a person) within this acquisition area, facial and iris information can be easily acquired. Figure 7 also illustrates the effect of the biometric information collector increasing the angle range by α upward or α downward when the carrier is pitched.

[0125] Figure 8 is a schematic diagram of the sensing angle ranges achieved by upper and lower sets of position sensors, respectively, in some embodiments of the biometric information collection device according to the present disclosure. In Figure 8 , the sector-shaped sensing angle ranges achieved by the upper and lower sets of position sensors effectively identify the position of the head of a subject (e.g., a person) relative to the carrier, thereby facilitating more accurate biometric information collection by the biometric information collector.

[0126] Figure 9 is a flow chart illustrating some embodiments of the biometric information collection method disclosed herein. Referring to the biometric information collection device of the aforementioned embodiments, the present disclosure also provides a biometric information collection method based on the aforementioned biometric information collection device. This method includes steps S1, S2, and S3. Steps S1, S2, and S3 can be executed via instructions issued by controller 60. Step S3 is not limited to being executed after step S2; in some embodiments, step S3 can also be executed simultaneously with step S1 or S2. Steps S1 and S2 can also be performed between the steps of collecting multiple biometric information in step S3.

[0127] In step S1 , the relative position between the collection object CO and the carrier 20 in at least a height direction is sensed by a position sensor 30 provided on the carrier 20 .

[0128] In step S2 , the carrier 20 is driven by the lifting driver 50 to adjust its height according to the sensing result of the position sensor 30 .

[0129] In step S3 , the biological information collector 40 provided on the carrier 20 collects the biological information of the collection object CO.

[0130] In the disclosed embodiment, a lifting drive is used to drive a carrier equipped with a position sensor and a biometric information collector. The lifting drive drives the carrier based on the sensing results of the position sensor, and the biometric information collector collects biometric information of the collection object. Compared to the related art method of determining the relative position of the collection object through a fixed camera, the position sensor used in the disclosed embodiment has better adaptability to different external light environments, making the determination of the relative position of the collection object more stable and reliable, reducing the adverse effects of position errors on collection quality. In addition, the position sensor and biometric information collector are both arranged on the carrier and rise and fall with the carrier, allowing adaptive adjustment to the height of the collection object to meet the needs of biometric information collection and improve collection quality and efficiency.

[0131] In some embodiments, the biometric information of the collection object CO includes facial information of the user, and the biometric information collector 40 includes a first camera 41 for collecting the facial information; wherein, according to the sensing result of the position sensor 30, the step of driving the carrier 20 to adjust the height by the lifting driver 50 includes: according to the sensing result of the position sensor 30 on the height position of the user, driving the carrier 20 to rise or fall by the lifting driver 50 to a height position at which the user's face is at least partially covered by the field of view of the first camera 41, so that the first camera 41 can collect the facial image of the user.

[0132] In some embodiments, the step of collecting the biometric information of the collection object CO by the biometric information collector 40 set on the carrier 20 includes: collecting the facial information of the user through the first camera 41; wherein, the biometric information collection device also includes a rotation driver 70 driven by the carrier, and before the step of collecting the facial information of the user through the first camera 41, the biometric information collection method also includes: acquiring the facial image of the user according to the first camera 41; determining the first offset of the position of the first feature point of the facial image of the user relative to the preset position of the first feature point; and driving the rotation driver 70 to drive the carrier 20 according to the first offset to reduce the first offset, so as to collect the facial information of the user through the first camera 41.

[0133] In some embodiments, the biometric information of the collection object CO also includes the user's iris information, and the biometric information collector 40 also includes a second camera 42 for collecting the iris information; wherein, the step of collecting the biometric information of the collection object CO through the biometric information collector 40 set on the carrier 20 also includes: collecting the user's iris information through the second camera 42.

[0134] Furthermore, before the step of collecting the user's iris information through the second camera 42, the biometric information collection method may also include: determining a second offset of a second feature point of the user's facial image relative to a preset position of the second feature point; and causing the rotation driver 70 to drive the carrier 20 according to the second offset to reduce the second offset, so as to collect the user's iris information through the second camera 42.

[0135] In the above embodiment, the biometric information collection device may further include a distance sensor 80 arranged on the carrier 20; wherein, before the step of determining the second offset of the position of the second feature point of the user's facial image relative to the preset position of the second feature point, the biometric information collection method further includes: adjusting the focal length of the second camera 42 according to the sensing result of the distance sensor 80, so as to collect the user's iris information through the second camera 42.

[0136] The various embodiments in this specification are described in a progressive manner, with different focuses between the embodiments. References to the common or similar parts of the various embodiments are sufficient. For the method embodiments, the overall structure and steps involved correspond to those in the device embodiments, so the description is relatively simple. For relevant parts, references to the device embodiments are sufficient.

[0137] Thus far, various embodiments of the present disclosure have been described in detail. To avoid obscuring the concept of the present disclosure, some details known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.

[0138] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art will understand that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced with equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A biological information collection device, comprising: Bracket (10); A carrier (20) movably disposed on the support (10); A position sensor (30) is disposed on the carrier (20) and is configured to sense a relative position between a collection object (CO) and the carrier (20) in at least a height direction; A biological information collector (40), arranged on the carrier (20), configured to collect biological information of the collection object (CO); A lifting drive (50) is drivingly connected to the carrier and is configured to drive the carrier (20) to rise and fall relative to the support (10); and The controller (60) is connected to the position sensor (30), the biological information collector (40) and the lifting driver (50) by signals, and is configured to enable the lifting driver (50) to drive the carrier (20) according to the sensing result of the position sensor (30), and to enable the biological information collector (40) to collect biological information of the collection object (CO).

2. The biological information collection device according to claim 1, wherein: The position sensor (30) comprises: a first group of position sensors (31a, 31b) and a second group of position sensors (32a, 32b) arranged in the height direction, wherein at least part of the sensing range of the first group of position sensors (31a, 31b) is higher than the sensing range of the second group of position sensors (32a, 32b).

3. The biological information collection device according to claim 2, wherein: The biological information collector (40) is located between the first group of position sensors (31a, 31b) and the second group of position sensors (32a, 32b).

4. The biological information collection device according to claim 3, wherein: The biological information collector (40) is located between a part of the position sensors (31a) and another part of the position sensors (31b) in the first group of position sensors (31a, 31b), and / or the biological information collector (40) is located between a part of the position sensors (32a) and another part of the position sensors (32b) in the second group of position sensors (32a, 32b).

5. The biological information collection device according to any one of claims 1 to 4, wherein: The position sensor (30) includes at least one of an infrared sensor, an ultrasonic sensor and a laser radar.

6. The biological information collection device according to any one of claims 1 to 5, wherein: The biometric information of the collection object (CO) includes the user's facial information, and the biometric information collector (40) includes: A first camera (41) is configured to collect the facial information; The controller (60) is configured to drive the carrier (20) to rise or fall to a height position at which the face of the user is at least partially covered by the field of view of the first camera (41) based on the sensing result of the height position of the user by the position sensor (30) through the lifting driver (50), so that the first camera (41) can capture the facial image of the user.

7. The biological information collection device according to claim 6, further comprising: a rotation driver (70), drivingly connected to the carrier, and configured to drive the carrier (20) to rotate relative to the support (10), The controller (60) is connected to the rotation driver (70) by signal, and is configured to cause the rotation driver (70) to drive the carrier (20) to reduce the first offset according to the first offset of the position of the first feature point of the facial image of the user acquired by the first camera (41) relative to the preset position of the first feature point, so as to acquire the facial image of the user through the first camera (41).

8. The biological information collection device according to claim 7, wherein: The biometric information of the collection object (CO) also includes the user's iris information, and the biometric information collector (40) also includes: a second camera (42), configured to collect the iris information, The controller (60) is configured to cause the rotation driver (70) to drive the carrier (20) to reduce the second offset according to the second offset of the position of the second feature point of the facial image of the user acquired by the first camera (41) relative to the preset position of the second feature point, so as to acquire the iris image of the user through the second camera (42).

9. The biological information collection device according to claim 8, further comprising: A distance sensor (80) is disposed on the carrier (20) and is configured to sense distance information of a collection object (CO) relative to the carrier (20). The controller (60) is connected to the distance sensor (80) by signal, and is configured to adjust the focus of the second camera (42) according to the sensing result of the distance sensor (80), so as to collect the iris information of the user through the second camera (42).

10. The biological information collection device according to any one of claims 6 to 9, wherein: The biological information collector (40) further comprises: The fill light component (43) is configured to provide fill light for the acquisition object (CO).

11. The biological information collection device according to any one of claims 1 to 10, wherein: The lifting drive (50) comprises: A mounting plate (51) movable in the height direction relative to the bracket (10); A transmission mechanism (52) is disposed on the bracket (10) and connected to the mounting plate (51); and a power element (53) disposed on the support (10) and drivingly connected to the transmission mechanism (52), and configured to drive the mounting plate (51) to move in the height direction through the transmission mechanism (52); Wherein, the carrier (20) is detachably arranged on the mounting plate (51).

12. The biological information collection device according to claim 11, wherein: The transmission mechanism (52) comprises: a ball screw transmission structure, a gear rack transmission structure or a sprocket chain transmission structure.

13. The biological information collection device according to claim 11 or 12, wherein: The power element (53) comprises an electric motor or a pneumatic motor.

14. The biological information collection device according to any one of claims 11 to 13, wherein: The bracket (10) is provided with a first limiting portion (11) and a second limiting portion (12) at intervals along the height direction; the first limiting portion (11) is configured to limit the highest movement position of the carrier (20) on the bracket (10); and the second limiting portion (12) is configured to limit the lowest movement position of the carrier (20) on the bracket (10).

15. A method for collecting biological information according to the biological information collection device of any one of claims 1 to 14, comprising: Sensing the relative position between the collection object (CO) and the carrier (20) in at least a height direction by means of a position sensor (30) arranged on the carrier (20); According to the sensing result of the position sensor (30), the carrier (20) is driven by a lifting driver (50) to adjust its height; The biological information of the collection object (CO) is collected by the biological information collector (40) arranged on the carrier (20).

16. The biological information collection method according to claim 15, wherein: The biometric information of the acquisition object (CO) includes facial information of a user, and the biometric information collector (40) includes a first camera (41) for acquiring the facial information; Wherein, according to the sensing result of the position sensor (30), the step of driving the carrier (20) to adjust the height by means of the lifting driver (50) comprises: According to the sensing result of the height position of the user by the position sensor (30), the carrier (20) is driven to rise or fall by the lifting driver (50) to a height position at which the face of the user is at least partially covered by the field of view of the first camera (41), so that the first camera (41) can capture the facial image of the user.

17. The biological information collection method according to claim 16, wherein: The step of collecting the biological information of the collection object (CO) by means of the biological information collector (40) arranged on the carrier (20) comprises: collecting facial information of the user through the first camera (41); The biometric information collection device further comprises a rotation driver (70) drivingly connected to the carrier, and before the step of collecting the user's facial information through the first camera (41), the biometric information collection method further comprises: Acquiring a facial image of the user using the first camera (41); Determine a first offset of a position of a first feature point of the user's facial image relative to a preset position of the first feature point; The rotation driver (70) drives the carrier (20) according to the first offset to reduce the first offset, so as to collect facial information of the user through the first camera (41).

18. The biological information collection method according to claim 16 or 17, wherein: The biometric information of the acquisition object (CO) further includes iris information of the user, and the biometric information collector (40) further includes a second camera (42) for acquiring the iris information; The step of collecting the biological information of the collection object (CO) by means of the biological information collector (40) arranged on the carrier (20) further comprises: The user's iris information is collected through the second camera (42).

19. The biological information collection method according to claim 18, wherein: Before the step of collecting the user's iris information through the second camera (42), the biometric information collection method further includes: Determining a second offset of a position of a second feature point of the user's facial image relative to a preset position of the second feature point; The rotation driver (70) drives the carrier (20) according to the second offset to reduce the second offset, so as to collect the user's iris information through the second camera (42).

20. The biological information collection method according to claim 18 or 19, wherein: The biological information collection device further comprises a distance sensor (80) arranged on the carrier (20); Before the step of determining a second offset of a position of a second feature point of the user's facial image relative to a preset position of the second feature point, the biometric information collection method further includes: The second camera (42) is caused to adjust its focal length according to the sensing result of the distance sensor (80), so as to collect the iris information of the user through the second camera (42).

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