Transmitting device in laser radar system and laser radar system

Abstract

The invention provides a transmitting device in a laser radar system and the laser radar system, and relates to the technical field of laser radars. The device comprises an interface unit, a driving unit and a pixel array unit, the pixel array unit comprises a plurality of pixel unit groups, each pixel unit group comprises N pixel units, and all the pixel units in each pixel unit group are arranged in a one-dimensional array form; the driving unit is used for analyzing the control signal to obtain a driving signal and sending the driving signal to at least one pixel unit group so as to drive a plurality of pixel units in the pixel unit group to reflect a detection light signal emitted by an emitting laser in the laser radar system to a target object, reduce the area occupied by the routing channel and improve the detection light signal output by the target object. Meanwhile, the number of pixel units needing to be driven is reduced, the design difficulty of driving is reduced, and the chip-level laser radar which is low in power consumption, high in integration level, high in reliability and low in cost is achieved.

Description

Technical Field

[0001] The present invention relates to the field of laser radar technology, and in particular to a transmitting device in a laser radar system and a laser radar system. Background Art

[0002] LiDAR measures the propagation distance between the sensor transmitter and the target object, analyzes the reflected energy, amplitude, frequency and phase of the reflected spectrum, and presents accurate three-dimensional structural information of the target object. Its working principle is to transmit a detection signal to the target, and then compare the received signal reflected from the target. After appropriate processing, relevant information of the target can be obtained, such as target distance, direction, height, speed, attitude, shape and other parameters.

[0003] In the related technologies, the transmitting modules in most laser radars are mainly based on mechanical structures, such as motor-driven rotating tables, reflectors and prisms, etc. However, this solution makes the radar system complex, large in size, high in power consumption and high in cost. Summary of the invention

[0004] The purpose of the present invention is to provide a transmitting device in a laser radar system and a laser radar system in order to solve the technical problems existing in the prior art in view of the above-mentioned deficiencies in the prior art.

[0005] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows: In a first aspect, an embodiment of the present application provides a transmitting device in a laser radar system, comprising: an interface unit, a driving unit, and a pixel array unit; The pixel array unit includes a plurality of pixel unit groups, each of the pixel unit groups includes N pixel units, and all the pixel units in each of the pixel unit groups are arranged in a one-dimensional array form; The output end of the interface unit is connected to the input end of the driving unit, and the output end of the driving unit is connected to one end of at least one of the pixel units; The input end of the interface unit is used to receive a control signal and transmit the control signal to the drive unit; The driving unit is used to analyze and process the control signal to obtain a driving signal, and send the driving signal to at least one pixel unit group to drive multiple pixel units in the pixel unit group to reflect the detection light signal emitted by the transmitting laser in the laser radar system to the target object, so as to detect the parameter information of the target object.

[0006] Optionally, each of the pixel unit groups includes a reference pixel unit and at least one non-reference pixel unit, one end of each of the non-reference pixel units is connected to the first end of the reference pixel unit, the other end of each of the non-reference pixel units is connected to a common electrode, the second end of the reference pixel unit is connected to the common electrode, and the third end of the reference pixel unit is connected to the driving unit.

[0007] Optionally, each of the pixel unit groups includes a row of pixel units in the pixel array, and the reference pixel unit in each of the pixel unit groups is a first target pixel unit in the row, and a row identifier and a column identifier of the first target pixel unit are the same.

[0008] Optionally, each of the pixel unit groups includes a column of pixel units in the pixel array, and the reference pixel unit in each of the pixel unit groups is a second target pixel unit in the column, and the row identifier and column identifier of the second target pixel unit are the same.

[0009] Optionally, each pixel unit of each pixel unit group includes a plurality of pixel sub-unit groups, each pixel sub-unit group includes M pixel sub-units, and all pixel sub-units in each pixel sub-unit group are arranged in a one-dimensional array.

[0010] Optionally, the driving unit comprises: a signal processing circuit and a row driving circuit; the output end of the interface unit is connected to the input end of the signal processing circuit, and the output end of the signal processing circuit is connected to the input end of the row driving circuit; The signal processing circuit is used to process the control signal to obtain at least one row driving signal, and send each row driving signal to the row driving circuit; The row driving circuit is used to drive a row of pixel units in a pixel unit group corresponding to each row driving signal to light up according to each row driving signal.

[0011] Optionally, the row driving circuit is specifically used for: If the scanning mode is row-by-row scanning, a row of pixel units in each pixel unit group is driven to light up in sequence according to each row driving signal and the row identifier of each pixel unit group.

[0012] Optionally, the driving unit comprises: a signal processing circuit and a column driving circuit; the output end of the interface unit is connected to the input end of the signal processing circuit, and the output end of the signal processing circuit is connected to the input end of the column driving circuit; The signal processing circuit is used to process the control signal to obtain at least one column driving signal, and send each of the column driving signals to the column driving circuit; The column driving circuit is used to drive a column of pixel units in the pixel unit group corresponding to each column driving signal to light up according to each column driving signal.

[0013] Optionally, the column driving circuit is specifically used for: If the scanning mode is column-by-column scanning, then according to each of the column driving signals and the column identifier of each of the pixel unit groups, a column of pixel units in the pixel unit group corresponding to each of the column driving signals is driven in sequence to light up.

[0014] In a second aspect, an embodiment of the present application further provides a laser radar system, the laser radar system comprising the transmitting device, transmitting laser and receiving device provided in the first aspect above; The transmitting laser is used to transmit a detection light signal to the transmitting device; The transmitting device is used to reflect the received detection light signal to the target object to be measured; The receiving device is used to receive the target signal reflected by the target object, so as to measure the parameter information of the target object according to the target signal and the detection light signal.

[0015] The beneficial effects of this application are: The present application provides a transmitting device in a laser radar system, which includes: an interface unit, a driving unit and a pixel array unit; the pixel array unit includes a plurality of pixel unit groups, each pixel unit group includes N pixel units, and all pixel units in each pixel unit group are arranged in a one-dimensional array; the output end of the interface unit is connected to the input end of the driving unit, and the output end of the driving unit is connected to one end of at least one pixel unit; the input end of the interface unit is used to access a control signal and transmit the control signal to the driving unit; the driving unit is used to parse and process the control signal to obtain a driving signal, and send the driving signal to at least one pixel unit group to drive the plurality of pixel units in the pixel unit group to reflect the detection light signal emitted by the transmitting laser in the laser radar system to the target object, so as to detect the parameter information of the target object. Compared with the traditional distributed structure, all pixel units in each pixel unit group in the present application are arranged in a one-dimensional array. The output end of the driving unit only needs to be connected to one end of each pixel unit group, and there is no need to connect the output end of the driving unit to all pixel units, thereby reducing the area occupied by the wiring channel, and also reducing the number of pixel units that need to be driven, thereby reducing the difficulty of driving design; then, the detection light signal emitted by the transmitting laser in the laser radar system is reflected to the target object through multiple pixel units in the pixel array unit, and the parameter information of the target object is detected, that is, silicon-based optoelectronic technology is applied to laser radar, realizing low-power, high-integration, high-reliability and low-cost chip-level laser radar. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a transmitting device in a laser radar system provided in the present application; Figure 2 A schematic diagram of a connection method of multiple pixel units in each pixel unit group provided in an embodiment of the present application; Figure 3 A schematic diagram showing that each pixel unit provided in an embodiment of the present application includes a plurality of pixel sub-unit groups; Figure 4 A schematic diagram of a connection method in which all pixel sub-units in each pixel sub-unit group provided in an embodiment of the present application are arranged in a row; Figure 5 A schematic diagram of the connection method of all pixel sub-units in two adjacent rows of pixel sub-unit groups provided in an embodiment of the present application; Figure 6 A schematic diagram of a connection method in which all pixel sub-units in each pixel sub-unit group provided in an embodiment of the present application are arranged in a column manner; Figure 7 A schematic diagram of a driving line connection method for each row of pixel sub-units in a first pixel sub-unit group provided in an embodiment of the present application; Figure 8 A schematic diagram of the structure of the drive unit provided in the embodiment of the present application Figure 1 ; Fig. 9 A schematic diagram of the structure of the drive unit provided in the embodiment of the present application Figure 2 ; Fig.10 A schematic diagram of the structure of the laser radar system provided for this application.

[0017] Icon: 10-transmitting device; 1-interface unit; 2-driving unit; 3-pixel array unit; 21-signal processing circuit; 22-row driving circuit; 23-column driving circuit; 200-lidar system; 4-transmitting laser; 5-receiving device. DETAILED DESCRIPTION

[0018] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the drawings in the present application only serve the purpose of explanation and description and are not used to limit the scope of protection of the present application. In addition, it should be understood that the schematic drawings are not drawn in real proportion. The flowchart used in this application shows the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowchart can be implemented out of sequence, and the steps without logical context can be reversed in order or implemented simultaneously. In addition, those skilled in the art can add one or more other operations to the flowchart under the guidance of the content of the present application, or remove one or more operations from the flowchart.

[0019] In addition, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0020] It should be noted that the term "comprising" will be used in the embodiments of the present application to indicate the existence of the features declared thereafter, but does not exclude the addition of other features.

[0021] First, the background technology involved in this application is introduced.

[0022] Compared with ordinary microwave radar, lidar uses laser beams and its operating frequency is much higher than microwave, so it has many advantages, mainly including: high resolution, good concealment, strong anti-active interference ability, good low-altitude detection performance, small size and light weight.

[0023] At present, most of the existing lidar systems are mainly based on mechanical structures, such as motor-driven rotating tables, reflectors and prisms. This solution makes the radar system complex, large in size, high in power consumption and high in cost.

[0024] This application takes into account the high refractive index and high contrast of silicon-based optoelectronic technology and the fact that a large number of waveguide elements and integrated circuit components can be integrated into a tiny chip at the same time. Therefore, this application proposes that silicon-based optoelectronic technology can be applied to design a transmitting device in a laser radar system, which can greatly reduce the size of the optical signal processing module and reduce power consumption, improve the performance, integration and reliability of the system, and realize a low-cost, high-performance chip-level laser radar.

[0025] The structure of the transmitting device in the laser radar system of the present application is described in detail below through multiple embodiments.

[0026] refer to Figure 1 As shown, it is a schematic diagram of the structure of a transmitting device in a laser radar system provided in the present application, and the device includes: an interface unit 1, a driving unit 2 and a pixel array unit 3.

[0027] Exemplarily, the interface unit 1 may be an RGB interface, a high-speed LVDS interface, a MIPI interface, or other high-speed data transmission interface, for receiving video source data or control signals input by a user.

[0028] The driving unit 2 is composed of a single transistor, and drives multiple pixel units in a row (or column) to light up or turn off by outputting a row driving signal or a column driving signal. The pixel unit is made based on silicon-based CMOS, and the pixel unit includes: a light-emitting component and a memory.

[0029] The pixel array unit includes a plurality of pixel unit groups, each pixel unit group includes N pixel units, and all pixel units in each pixel unit group are arranged in a one-dimensional array. Exemplarily, the pixel array unit includes: 3 pixel unit groups, each pixel unit group includes: 3 pixel units, that is, the pixel array unit is a 3*3 array. Among them, the 3 pixel units in each pixel unit group are arranged in a one-dimensional array, such as arranged in a row manner (or column manner), that is, the 3 pixel units in the same row are a pixel unit group, or the 3 pixel units in the same column are a pixel unit group. Therefore, in the solution provided in the present application, all pixel units in each pixel unit group are arranged in a one-dimensional array, so that the area occupied by the wiring channel is reduced, and the number of pixel units required to be driven is also reduced, which reduces the difficulty of driving design.

[0030] The output end of the interface unit 1 is connected to the input end of the driving unit, and the output end of the driving unit 2 is connected to one end of each pixel unit group. Therefore, in the solution provided by the present application, all pixel units in each pixel unit group are arranged in a one-dimensional array, and the output end of the driving unit only needs to be connected to one end of each pixel unit group, and the output end of the driving unit does not need to be connected to all pixel units, thereby reducing the area occupied by the wiring channel, and also reducing the number of pixel units that need to be driven, thereby reducing the difficulty of driving design.

[0031] The input end of the interface unit 1 is used to receive a control signal and transmit the control signal to the driving unit 2. Exemplarily, the control signal is 1, which means that a plurality of pixel units in the first pixel unit group need to be controlled to light up.

[0032] The driving unit 2 is used to analyze and process the control signal to obtain a driving signal, and send the driving signal to at least one pixel unit group to drive multiple pixel units in the pixel unit group to reflect the detection light signal emitted by the transmitting laser in the laser radar system to the target object, so as to detect the parameter information of the target object.

[0033] In one feasible manner, the driving unit parses and processes the control signal to obtain a driving signal, such as when the driving signal is 01, and sends the driving signal to the first pixel unit group to drive multiple pixel units in the first pixel unit group to light up, so that after the multiple pixel units in the first pixel unit group are lit up, the detection light signal emitted by the transmitting laser in the laser radar system can be reflected to the target object, and then the target signal returned by the target object is received by the receiving device in the laser radar system, and the distance between the laser radar system and the target object is determined based on the flight time between the detection light signal and the target signal. At the same time, the detection light signal can also be compared with the target signal to obtain parameter information of the target object, such as target direction, height, speed, posture, shape, etc., to achieve detection of the target object.

[0034] In summary, an embodiment of the present application provides a transmitting device in a laser radar system, the device comprising: an interface unit, a driving unit and a pixel array unit; the pixel array unit comprises a plurality of pixel unit groups, each pixel unit group comprises N pixel units, and all pixel units in each pixel unit group are arranged in a one-dimensional array; the output end of the interface unit is connected to the input end of the driving unit, and the output end of the driving unit is connected to one end of at least one pixel unit; the input end of the interface unit is used to access a control signal and transmit the control signal to the driving unit; the driving unit is used to parse and process the control signal to obtain a driving signal, and send the driving signal to at least one pixel unit group to drive the plurality of pixel units in the pixel unit group to reflect the detection light signal emitted by the transmitting laser in the laser radar system to the target object, so as to detect the parameter information of the target object. Compared with the traditional distributed structure, all pixel units in each pixel unit group in the present application are arranged in a one-dimensional array. The output end of the driving unit only needs to be connected to one end of each pixel unit group, and there is no need to connect the output end of the driving unit to all pixel units, thereby reducing the area occupied by the wiring channel, and also reducing the number of pixel units that need to be driven, thereby reducing the difficulty of driving design; then, the detection light signal emitted by the transmitting laser in the laser radar system is reflected to the target object through multiple pixel units in the pixel array unit, and the parameter information of the target object is detected, that is, silicon-based optoelectronic technology is applied to laser radar, realizing low-power, high-integration, high-reliability and low-cost chip-level laser radar.

[0035] Optionally, each pixel unit group includes a reference pixel unit and at least one non-reference pixel unit, one end of each non-reference pixel unit is connected to the first end of the reference pixel unit, the other end of each non-reference pixel unit is connected to the common electrode, the second end of the reference pixel unit is connected to the common electrode, and the third end of the reference pixel unit is connected to the driving unit.

[0036] The common electrode is a common terminal electrode connected to the other ends of all pixel units. Exemplarily, the common electrode may be a translucent conductive electrode, and may be made of ITO, a translucent metal element, a translucent metal compound or other translucent conductive materials.

[0037] In one achievable manner, reference Figure 2 As shown, taking the first pixel unit group as an example, the first pixel unit group includes: 3 pixel units, such as pixel unit Pixel11, pixel unit Pixel12 and pixel unit Pixel13, pixel unit Pixel11 can be used as a reference pixel unit, and pixel unit Pixel12 and pixel unit Pixel13 are both non-reference pixel units. Therefore, one end of pixel unit Pixel12 and one end of pixel unit Pixel13 can be connected to the first end of pixel unit Pixel11, and the other end of pixel unit Pixel12 and the other end of pixel unit Pixel13 can be connected to a common electrode, which can be a common negative electrode, that is, the negative end of pixel unit Pixel11 (that is, the second end), the negative end of pixel unit Pixel12 and the negative end of pixel unit Pixel13 are all connected to the common negative electrode end ( Figure 2 (not shown); at the same time, the third end of the pixel unit Pixel11 is connected to the driving unit. Therefore, the driving unit can drive multiple pixel units in the first pixel unit group by sending a driving signal to the pixel unit Pixel11 in the first pixel unit group, reducing the area occupied by the wiring channel when the driving unit is connected to all pixel units, and also reducing the number of pixel units that need to be driven, reducing the difficulty of driving design.

[0038] The one-dimensional array arrangement of the plurality of pixel units in each pixel unit group will be explained in detail through the following embodiments.

[0039] The first type: row arrangement Optionally, each pixel unit group includes a row of pixel units in the pixel array, and the reference pixel unit in each pixel unit group is a first target pixel unit in the row, and the row identifier and column identifier of the first target pixel unit are the same.

[0040] In one achievable manner, taking the second pixel unit group as an example, the second pixel unit group includes a plurality of pixel units located in the second row, and the reference pixel unit in the second pixel unit group is pixel unit Pixel22, and the row identifier and column identifier of pixel unit Pixel22 in the second pixel unit group are both 2, that is, pixel unit Pixel22 can be used as the reference pixel unit in the second pixel unit group. Therefore, one end of pixel unit Pixel21 and one end of pixel unit Pixel23 are both connected to the first end of pixel unit Pixel22; and the other end of pixel unit Pixel21, the second end of pixel unit Pixel22 and the other end of pixel unit Pixel23 are all connected to the common electrode.

[0041] For another example, taking the third pixel unit group as an example, the third pixel unit group includes a plurality of pixel units located in the third row, and the row identifier and column identifier of the pixel unit Pixel33 in the third pixel unit group are both 3, that is, the pixel unit Pixel33 can be used as the reference pixel unit in the third pixel unit group. Therefore, one end of the pixel unit Pixel31 and one end of the pixel unit Pixel32 are both connected to the first end of the pixel unit Pixel33; and the other end of the pixel unit Pixel31, the second end of the pixel unit Pixel32 and the other end of the pixel unit Pixel33 are all connected to the common electrode.

[0042] Second, column arrangement Optionally, each pixel unit group includes a column of pixel units in the pixel array, and the reference pixel unit in each pixel unit group is the second target pixel unit in the column, and the row identifier and column identifier of the second target pixel unit are the same.

[0043] In one achievable way, continue to refer to Figure 2 As shown, taking the first pixel unit group as an example, the first pixel unit group includes a plurality of pixel units located in the first column, and the reference pixel unit in the first pixel unit group is pixel unit Pixel11, and the row identifier and column identifier of pixel unit Pixel11 in the first pixel unit group are both 1, that is, pixel unit Pixel11 can be used as the reference pixel unit in the first pixel unit group. Therefore, one end of pixel unit Pixel21 and one end of pixel unit Pixel31 are both connected to the first end of pixel unit Pixel11; and the other end of pixel unit Pixel21, the second end of pixel unit Pixel11 and the other end of pixel unit Pixel31 are all connected to the common electrode.

[0044] For another example, taking the second pixel unit group as an example, the second pixel unit group includes a plurality of pixel units located in the second column, and the reference pixel unit in the second pixel unit group is pixel unit Pixel22, and the row identifier and column identifier of pixel unit Pixel22 in the second pixel unit group are both 2, that is, pixel unit Pixel22 can be used as the reference pixel unit in the second pixel unit group. Therefore, one end of pixel unit Pixel12 and one end of pixel unit Pixel32 are both connected to the first end of pixel unit Pixel22; and the other end of pixel unit Pixel12, the second end of pixel unit Pixel22 and the other end of pixel unit Pixel32 are all connected to the common electrode.

[0045] For another example, continuing to take the third pixel unit group as an example, the third pixel unit group includes a plurality of pixel units located in the third row, and the row identifier and column identifier of the pixel unit Pixel33 in the third pixel unit group are both 3, that is, the pixel unit Pixel33 can be used as the reference pixel unit in the third pixel unit group. Therefore, one end of the pixel unit Pixel13 and one end of the pixel unit Pixel23 are both connected to the first end of the pixel unit Pixel33; and the other end of the pixel unit Pixel13, the second end of the pixel unit Pixel23, and the other end of the pixel unit Pixel33 are all connected to the common electrode.

[0046] Therefore, a plurality of pixel units located in the same column in the pixel array unit is regarded as a pixel unit group.

[0047] Optionally, the pixel array unit includes: n*m pixel units, that is, n rows and m columns. When arranged in rows, the m pixel units in each row can be used as a pixel unit group, that is, n pixel unit groups can be obtained; when arranged in columns, the n pixel units in each column can be used as a pixel unit group, that is, m pixel unit groups can be obtained; multiple pixel units located in the same row (or column) in the pixel array unit can be used as a pixel unit group, so that all pixel units in each pixel unit group are arranged in a one-dimensional array, thereby reducing the width of the wiring and saving the chip area.

[0048] Optionally, each pixel unit of each pixel unit group includes a plurality of pixel sub-unit groups, each pixel sub-unit group includes M pixel sub-units, and all pixel sub-units in each pixel sub-unit group are arranged in a one-dimensional array.

[0049] In one achievable manner, in order to meet the requirements of various resolutions, each pixel unit may include multiple pixel sub-units. Figure 3As shown, taking the first pixel unit as an example, the first pixel unit includes: 6 pixel sub-unit groups, and the 6 pixel sub-units included in each pixel sub-unit group are arranged in a one-dimensional array form, that is, composed of 36 pixel sub-units pixel11~pixel66.

[0050] The number of pixel sub-units included in each pixel unit group can be adjusted according to the display resolution to meet the requirements of various resolutions; and all pixel sub-units in each pixel sub-unit group are arranged in a one-dimensional array.

[0051] Among them, each pixel sub-unit group includes a reference pixel sub-unit and at least one non-reference pixel sub-unit, one end of each non-reference pixel sub-unit is connected to the first end of the reference pixel sub-unit, the other end of each non-reference pixel sub-unit is connected to the common electrode, the second end of the reference pixel sub-unit is connected to the common electrode, and the third end of the reference pixel sub-unit is connected to the driving unit.

[0052] Optionally, in an achievable manner, the M pixel sub-units included in each pixel sub-unit group are arranged in rows. Specifically, each pixel unit group includes a row of pixel units in the pixel array, and the reference pixel unit in each pixel unit group is the first target pixel unit in the row, and the row identifier and column identifier of the first target pixel unit are the same.

[0053] refer to Figure 4 , which is a schematic diagram of the connection manner in which all pixel sub-units in each pixel sub-unit group are arranged in rows.

[0054] Taking the first pixel sub-unit group as an example, the first pixel sub-unit group includes: 6*6 pixel sub-units, that is, composed of 36 pixel sub-units pixel11 to pixel66. Figure 4 Each row includes 6 pixel sub-units, and each column also includes 6 pixel sub-units, wherein the identifiers pixelij of some pixel sub-units are not shown.

[0055] The column drive lines of the pixel subunits pixel11~pixel16 in the first row are all connected to the first pixel subunit pixel11 in the first column, that is, the column drive lines of multiple pixel subunits in the first row are led out by the pixel subunit pixel11 in the first row and the first column; the column drive lines of the pixel subunits pixel21~pixel26 in the second row are all connected to the pixel subunit pixel22 in the second row and the second column, that is, the column drive lines of multiple pixel subunits in the second row are led out and connected by the pixel subunit pixel22 in the second row and the second column; the pixel subunits pixel31~pixel36 in the third row are all connected to the pixel subunit pixel31 in the third row and the second column, that is, ... The column drive lines of ixel36 are all connected to the pixel sub-unit pixel33 in the third row and the third column; the column drive lines of the pixel sub-units pixel41 to pixel46 in the fourth row are all connected to the pixel sub-unit pixel44 in the fourth row and the fourth column; the column drive lines of the pixel sub-units pixel51 to pixel56 in the fifth row are all connected to the pixel sub-unit pixel55 in the fifth row and the fifth column; and the column drive lines of the pixel sub-units pixel61 to pixel66 in the sixth row are all connected to the pixel sub-unit pixel66 in the sixth row and the sixth column. Therefore, there are 6 column drive lines on each column of pixel sub-units in the first pixel sub-unit group, which reduces the area occupied by the routing channel and also reduces the number of pixels that need to be driven by the column drive, reducing the design difficulty of the column drive.

[0056] refer to Figure 5 As shown in FIG. 1 , it is a schematic diagram of the connection mode of all pixel subunits in two adjacent pixel subunit groups. In which, each row of the pixel array has a pixel subunit group, and each column has b pixel subunit groups. Each pixel subunit group is a 6*6 pixel array, which is composed of 36 pixel subunits pixel11 to pixel66. In which, the connection relationship between the pixel subunit group 41 in the first row and the first column and the pixel subunit group 42 in the second row and the first column is shown in the figure. In which, Figure 5 Each row includes 6 pixel sub-units, and each column also includes 6 pixel sub-units, wherein the identifiers pixelij of some pixel sub-units are not shown.

[0057] The column drive lines of the first row of pixels pixel11 to pixel16 of the first row and first column of the pixel sub-unit group 41 are all gathered on the pixel sub-unit pixel11 of the first row and first column of the pixel sub-unit group 41. The column drive lines of the first row of pixels pixel11 to pixel16 of the second row and first column of the pixel sub-unit group 42 are all gathered on the pixel unit pixel11 of the first row and first column of the pixel sub-unit group 42.

[0058] All column drive lines of the first row of pixels in the first row and first column of the pixel sub-unit group 41 are connected in sequence with all column drive lines of the first row of pixels in the second row and first column of the pixel sub-unit group 42 via pixel units pixel11 to pixel61 above, and are connected to the column drive lines corresponding to the next pixel array via pixel sub-units pixel11 to pixel61 of the pixel sub-unit group 42 above.

[0059] The column drive lines of the second row of pixels pixel21 to pixel26 of the first row and first column pixel sub-unit group 41 are all gathered on the second row and second column pixel sub-unit pixel22 of the second row and second column pixel sub-unit group 41, and the column drive lines of the second row of pixels pixel21 to pixel26 of the second row and first column pixel sub-unit group 42 are all gathered on the second row and second column pixel sub-unit pixel22 of the second row and second column pixel sub-unit group 42. All column drive lines of the second row of pixels of the first row and first column pixel sub-unit group 41 are sequentially connected to all column drive lines of the second row of pixels of the second row and first column pixel sub-unit group 42 via the top of pixel units pixel22 to pixel62, and are connected to the column drive lines corresponding to the next pixel array via the top of pixel units pixel12 to pixel62 of the pixel sub-unit group 42. Sequentially, the pixel subunit pixel33 in the pixel subunit group 41 is connected to the pixel subunit pixel33 in the pixel subunit group 42, and the pixel subarrays on each column are connected in this way, thereby forming a one-dimensional pixel arrangement.

[0060] Optionally, in another achievable manner, the M pixel sub-units included in each pixel sub-unit group are arranged in columns. Specifically, each pixel unit group includes a column of pixel units in the pixel array, and the reference pixel unit in each pixel unit group is the second target pixel unit in the column, and the row identifier and column identifier of the second target pixel unit are the same.

[0061] refer to Figure 6 , which is a schematic diagram of the connection manner in which all pixel sub-units in each pixel sub-unit group are arranged in a column manner.

[0062] Here, continuing to take the first pixel sub-unit group as an example, the first pixel sub-unit group includes: 6*6 pixel sub-units, that is, composed of 36 pixel sub-units pixel11 to pixel66. Figure 6 Each row includes 6 pixel sub-units, and each column also includes 6 pixel sub-units, wherein the identifiers pixelij of some pixel sub-units are not shown.

[0063] The row drive lines of the pixel subunits pixel11~pixel61 in the first column are all connected to the first pixel subunit pixel11 in the first column, that is, the column drive lines of multiple pixel subunits in the first row are led out by the pixel subunit pixel11 in the first row and the first column; the column drive lines of the pixel subunits pixel12~pixel62 in the second column are all connected to the pixel subunit pixel22 in the second row and the second column, that is, the row drive lines of multiple pixel subunits in the second column are led out and connected by the pixel subunit pixel22 in the second row and the second column; the pixel subunits pixel13~pixel61 in the third column are all connected to the pixel subunit pixel14~pixel62 in the fourth column, that is, the pixel subunit pixel15~pixel62 in the fifth column are all connected to the pixel subunit pixel16 in the fifth column, that is, the pixel subunit pixel17 in the fifth column is connected to the pixel subunit pixel18 in the fifth column, that is, the pixel subunit pixel19 in the fifth column is connected to the pixel subunit pixel20 in the fifth column, that is, the pixel subunit pixel21 in the fifth column is connected to the pixel subunit pixel22 in the fifth column, that is, the pixel subunit pixel22 in the fifth column is connected to the pixel subunit pixel19 in the fifth column, that is, the pixel subunit pixel11 in the fifth column is connected to the pixel subunit pixel1 The row drive lines of ixel63 are all connected to the pixel subunit pixel33 in the third row and the third column; the row drive lines of the pixel subunits pixel14 to pixel64 in the fourth column are all connected to the pixel subunit pixel44 in the fourth row and the fourth column; the row drive lines of the pixel subunits pixel15 to pixel65 in the fifth column are all connected to the pixel subunit pixel55 in the fifth row and the fifth column; and the row drive lines of the pixel subunits pixel16 to pixel66 in the sixth column are all connected to the pixel subunit pixel66 in the sixth row and the sixth column. Therefore, there are 6 row drive lines on each row of pixel subunits in the first pixel subunit group, which reduces the area occupied by the routing channel and also reduces the number of pixels that need to be driven by the column drive, reducing the design difficulty of the column drive.

[0064] Exemplarily, the pixel array unit is divided into 6*6 pixel unit groups. Each row has a pixel sub-unit groups, and each column has b pixel sub-unit groups, thereby forming a 6b*6a pixel array. All pixel units in each column of the pixel array unit are connected to a common electrode, thereby forming a one-dimensional pixel arrangement of 6b columns.

[0065] refer to Figure 7 As shown, there are 6 pixel electrodes above the pixel subunits pixel11 to pixel61 in the first column of the first pixel subunit group, which are driven by pixel11 to pixel16 from left to right, respectively, and their driving lines are connected as shown in FIG. Figure 6 As shown. Sequentially, there are 6 pixel electrodes above the second column of pixel subunits pixel12 to pixel62 of the first pixel subunit group, which are driven by pixel21 to pixel26 from left to right, respectively, and their driving lines are connected as shown. Figure 7 As shown, the other several columns of pixel units of the first pixel sub-unit group are connected in this way. The driving line connection can be a column connection or a row connection.

[0066] Optionally, the pixel array unit is divided into a plurality of 6*6 pixel unit groups. Each row has a pixel sub-unit group, and each column has b pixel sub-unit group, thereby forming a 6b*6a pixel array. Since there are 6 pixel electrodes above each pixel unit, 6a pixel units have 6*6a pixel electrodes. The pixel electrodes of this embodiment are expanded by 6 times compared with the previous embodiment, thereby achieving an improvement in resolution under the same area.

[0067] Optionally, refer to Figure 8 FIG. 1 is a schematic diagram of the structure of the driving unit provided in the embodiment of the present application. Figure 1 The driving unit 2 includes: a signal processing circuit 21 and a row driving circuit 22; the output end of the interface unit 1 is connected to the input end of the signal processing circuit 21, and the output end of the signal processing circuit 21 is connected to the input end of the row driving circuit 22.

[0068] The signal processing circuit 21 is used to process the control signal to obtain at least one row driving signal and send each row driving signal to the row driving circuit.

[0069] The row driving circuit 22 is used to drive a row of pixel units in a pixel unit group corresponding to each row driving signal to light up according to each row driving signal.

[0070] In one achievable manner, for example, the pixel array unit includes: 3 pixel unit groups, and the multiple pixel units in each pixel unit group are arranged one-dimensionally in rows. For example, it is necessary to transmit the light detection signal to the target object through the multiple pixel units in the first row of the pixel array unit, that is, it is necessary to send a row drive signal to the first pixel unit group. If the control signal input by the user is 1, the signal unit processes the control signal and generates a row drive signal of 100; the row drive unit drives the multiple pixel units in the first row to light up according to the row drive signal 100.

[0071] For another example, it is necessary to transmit the light detection signal to the target object through multiple pixel units in the second row of the pixel array unit, that is, it is necessary to send a row drive signal to the second pixel unit group. If the control signal input by the user is 2, the row drive signal generated by the signal processing unit after processing the control signal is 010; the row drive unit drives the multiple pixel units in the second row to light up according to the row drive signal 010. Therefore, by selecting the row address, the driving of multiple pixel units in a row in the pixel unit array can be realized, thereby improving the efficiency of controlling the pixel array unit.

[0072] Optionally, the row driving circuit 22 is specifically used for: If the scanning mode is row-by-row scanning, a row of pixel units in each pixel unit group is driven to light up in sequence according to each row driving signal and a row identifier of each pixel unit group.

[0073] In one achievable manner, the pixel array unit includes: 3 pixel unit groups. When it is necessary to control the three pixel unit groups in the pixel array unit to light up in sequence, the scanning mode can be determined as row-by-row scanning, that is, after the signal processing unit processes the input control signal, the generated row drive signals are 100, 010, and 001, and these three row drive signals are sent down to each pixel unit group in the pixel array unit in sequence to drive a row of pixel units in each pixel unit group to light up in sequence.

[0074] Optionally, refer to Fig. 9 FIG. 1 is a schematic diagram of the structure of the driving unit provided in the embodiment of the present application. Figure 2 The driving unit 2 includes: a signal processing circuit 21 and a column driving circuit 23; the output end of the interface unit 1 is connected to the input end of the signal processing circuit 21, and the output end of the signal processing circuit 21 is connected to the input end of the column driving circuit 23; The signal processing circuit 21 is used to process the control signal to obtain at least one column driving signal and send each column driving signal to the column driving circuit; The column driving circuit 23 is used to drive a column of pixel units in a pixel unit group corresponding to each column driving signal to light up according to each column driving signal.

[0075] In one achievable manner, for example, the pixel array unit includes: 3 pixel unit groups, and the multiple pixel units in each pixel unit group are arranged one-dimensionally in columns. For example, it is necessary to transmit the light detection signal to the target object through the multiple pixel units in the first column of the pixel array unit, that is, it is necessary to send a row drive signal to the first pixel unit group. If the control signal input by the user is 1, the signal unit processes the control signal and generates a row drive signal of 100; the column drive unit drives the multiple pixel units in the first column to light up according to the row drive signal 100.

[0076] For another example, it is necessary to transmit the light detection signal to the target object through multiple pixel units in the second column of the pixel array unit, that is, it is necessary to send a column drive signal to the second pixel unit group. If the control signal input by the user is 2, the column drive signal generated by the signal unit after processing the control signal is 010; the column drive unit drives the multiple pixel units in the second column to light up according to the column drive signal 010. Therefore, by selecting the column address, the driving of multiple pixel units in a column in the pixel unit array can be realized, thereby improving the efficiency of controlling the pixel array unit.

[0077] Optionally, the column driving circuit 23 is specifically used for: If the scanning mode is column-by-column scanning, then according to each column driving signal and the column identifier of each pixel unit group, a column of pixel units in the pixel unit group corresponding to each column driving signal is driven in sequence to light up.

[0078] In another achievable manner, the pixel array unit includes: 3 pixel unit groups. When it is necessary to control the three pixel unit groups in the pixel array unit to light up in sequence, the scanning mode can be determined as column-by-column scanning, that is, after the signal processing unit processes the input control signal, the generated column driving signals are 100, 010, and 001, and these three column driving signals are sent down to each pixel unit group in the pixel array unit in sequence to drive a column of pixel units in each pixel unit group to light up in sequence.

[0079] Optionally, refer to Fig.10 As shown, it is a schematic diagram of the structure of the laser radar system provided in the present application. The laser radar system 200 includes the transmitting device 10, the transmitting laser 4 and the receiving device 5 provided in the above-mentioned embodiment.

[0080] Exemplarily, the receiving device 5 may be a receiving chip for receiving a target signal reflected from a target object.

[0081] The transmitting laser 4 is used to transmit a detection light signal to the transmitting device 10 .

[0082] The transmitting device 10 is used to reflect the received detection light signal to the target object to be measured.

[0083] The receiving device 5 is used to receive the target signal reflected by the target object, so as to measure the parameter information of the target object according to the target signal and the detection light signal.

[0084] In the present application, the light emitted by the transmitting laser 4 can be irradiated onto the transmitting device 10 in the silicon-based CMOS laser radar system. The transmitting device 10 reflects the light, and the reflected laser is projected onto the target object. The receiving device 5 detects the scattered light from the target object, and determines the distance to the object by the time difference between the time of emitting the light and the time of receiving the scattered light. The received scattered light is compared with the emitted light to obtain relevant information of the target object, such as the target direction, height, speed, attitude, and even shape parameters. That is, silicon-based optoelectronic technology is applied to laser radar, realizing a chip-level laser radar with low power consumption, high integration, high reliability and low cost.

[0085] In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0086] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0087] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0088] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (English: processor) to perform some steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (English: Read-Only Memory, referred to as: ROM), random access memory (English: Random Access Memory, referred to as: RAM), disk or optical disk and other media that can store program codes.

Claims

1. A transmitting device in a laser radar system, characterized in that: include: An interface unit, a driving unit, and a pixel array unit; The pixel array unit includes a plurality of pixel unit groups, each of the pixel unit groups includes N pixel units, and all the pixel units in each of the pixel unit groups are arranged in a one-dimensional array form; The output end of the interface unit is connected to the input end of the driving unit, and the output end of the driving unit is connected to one end of at least one of the pixel units; The input end of the interface unit is used to receive a control signal and transmit the control signal to the drive unit; The driving unit is used to analyze and process the control signal to obtain a driving signal, and send the driving signal to at least one pixel unit group to drive multiple pixel units in the pixel unit group to reflect the detection light signal emitted by the transmitting laser in the laser radar system to the target object, so as to detect the parameter information of the target object.

2. The device according to claim 1, characterized in that Each of the pixel unit groups includes a reference pixel unit and at least one non-reference pixel unit, one end of each of the non-reference pixel units is connected to the first end of the reference pixel unit, the other end of each of the non-reference pixel units is connected to a common electrode, the second end of the reference pixel unit is connected to the common electrode, and the third end of the reference pixel unit is connected to the driving unit.

3. The device according to claim 2, characterized in that Each of the pixel unit groups includes a row of pixel units in the pixel array, and the reference pixel unit in each of the pixel unit groups is a first target pixel unit in the row, and the row identifier and column identifier of the first target pixel unit are the same.

4. The device according to claim 2, characterized in that Each of the pixel unit groups includes a column of pixel units in the pixel array, and the reference pixel unit in each of the pixel unit groups is a second target pixel unit in the column, and the row identifier and column identifier of the second target pixel unit are the same.

5. The device according to claim 1, characterized in that Each pixel unit of each pixel unit group includes a plurality of pixel sub-unit groups, each pixel sub-unit group includes M pixel sub-units, and all pixel sub-units in each pixel sub-unit group are arranged in a one-dimensional array.

6. The device according to claim 3, characterized in that The driving unit comprises: a signal processing circuit and a row driving circuit; the output end of the interface unit is connected to the input end of the signal processing circuit, and the output end of the signal processing circuit is connected to the input end of the row driving circuit; The signal processing circuit is used to process the control signal to obtain at least one row driving signal, and send each row driving signal to the row driving circuit; The row driving circuit is used to drive a row of pixel units in a pixel unit group corresponding to each row driving signal to light up according to each row driving signal.

7. The device according to claim 6, characterized in that The row driving circuit is specifically used for: If the scanning mode is row-by-row scanning, a row of pixel units in each pixel unit group is driven to light up in sequence according to each row driving signal and the row identifier of each pixel unit group.

8. The device according to claim 4, characterized in that The driving unit comprises: a signal processing circuit and a column driving circuit; the output end of the interface unit is connected to the input end of the signal processing circuit, and the output end of the signal processing circuit is connected to the input end of the column driving circuit; The signal processing circuit is used to process the control signal to obtain at least one column driving signal, and send each of the column driving signals to the column driving circuit; The column driving circuit is used to drive a column of pixel units in the pixel unit group corresponding to each column driving signal to light up according to each column driving signal.

9. The device according to claim 8, characterized in that The column driving circuit is specifically used for: If the scanning mode is column-by-column scanning, then according to each of the column driving signals and the column identifier of each of the pixel unit groups, a column of pixel units in the pixel unit group corresponding to each of the column driving signals is driven in sequence to light up.

10. A laser radar system, characterized in that: The laser radar system comprises: a transmitting laser, a receiving device and a transmitting device according to any one of claims 1 to 9 above; The transmitting laser is used to transmit a detection light signal to the transmitting device; The transmitting device is used to reflect the received detection light signal to the target object to be measured; The receiving device is used to receive the target signal reflected by the target object, so as to measure the parameter information of the target object according to the target signal and the detection light signal.

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