Data transmission system and method

Abstract

The present application is applicable to the field of communications technology and provides a data transmission system and method. The system includes a drive circuit, at least one signal light, and a radar device. The drive circuit is configured to drive the at least one signal light to emit a light signal based on preset coded information. The radar device is configured to receive the light signal and, based on the light signal, perform a control operation corresponding to the coded information. The system controls the radar device through optical transmission, eliminating the need for wired transmission to detect each radar device one by one. This wireless communication method can simultaneously transmit optical signals to a large number of radar devices for detection, significantly shortening the detection time of the radar devices and thereby improving production efficiency.

Description

Technical Field

[0001] The present application relates to the field of communication technologies, and in particular to a data transmission system and method. Background Art

[0002] Radar equipment uses radio to detect targets and determine their spatial position. It is not affected by factors such as weather conditions and light intensity and has a certain penetrating ability. It is widely used in various fields.

[0003] However, the inspection process for radar products in radar equipment production lines is relatively backward. The existing inspection method involves connecting one end of a data cable to a dedicated inspection device and the other end to a dedicated data port on the radar device. This connection means operators can only inspect one radar device at a time. Upon completion, the cable must be removed from the radar device's data port and reconnected to the next radar device for inspection.

[0004] If the number of radar devices produced is in the tens of thousands, then the same operation needs to be performed on each radar device. This detection method requires the operator to repeatedly plug and unplug the data cable, which seriously affects the production efficiency of the radar equipment. Summary of the Invention

[0005] The embodiments of the present application provide a data transmission system and method, which can solve the problem of low production efficiency of radar equipment caused by repeated plugging and unplugging of data cables.

[0006] In a first aspect, an embodiment of the present application provides a data transmission system, including a driving circuit, at least one signal light, and a radar device;

[0007] The driving circuit is used to drive the at least one signal light to emit a light signal according to preset coding information;

[0008] The radar device is configured to receive the optical signal and perform a control operation corresponding to the coded information according to the optical signal.

[0009] Optionally, the control operations include: starting, stopping, entering debugging mode, data importing, firmware updating, data calibration, data calibration or detection, adjusting the rotation speed, adjusting the radar sampling rate, adjusting the radar light source power, and adjusting the radar light source modulation mode.

[0010] Optionally, the radar device is provided with a photoelectric detection component, which is used to receive the optical signal and convert the optical signal into an electrical signal.

[0011] Optionally, the wavelength of the optical signal is different from the wavelength of the electromagnetic wave emitted by the radar device. If the wavelengths are the same, it may cause malfunction of the radar device, thereby affecting the radar device's perception of the surrounding environment.

[0012] Optionally, the coded information includes the lighting duration, lighting frequency, and / or lighting brightness of the signal light. This not only enriches the types of light signals, but also facilitates the radar device to identify the signal.

[0013] Optionally, the coded information also includes the number of times the signal light flashes.

[0014] Optionally, the radar device is a lidar.

[0015] Optionally, the radar device is provided with an outer cover, and the top and / or side of the outer cover allow the optical signal to be transmitted; if the signal lights include multiple lights, the multiple signal lights are evenly distributed on the top and / or side of the radar device. Such uniform distribution further enhances the ability of the outer cover to transmit optical signals.

[0016] It should be understood that the top and / or side of the radar device refers to the part that is not in contact with the ground and is parallel to the ground when the radar device is placed normally horizontally on the ground; the other parts except the part in contact with the ground and the top of the radar device belong to the side.

[0017] In a second aspect, an embodiment of the present application provides a data transmission method, which is applied to the data transmission system as described in the first aspect, and the method includes:

[0018] The driving circuit drives the at least one signal lamp to emit a light signal according to preset coding information;

[0019] The radar device is configured to receive the optical signal and perform a control operation corresponding to the coded information according to the optical signal.

[0020] Optionally, the control operation includes a data import operation, and the coding information corresponding to the data import operation includes first sub-coding information and second sub-coding information, the first sub-coding information is used to instruct the radar device to start data import, and the second sub-coding information is used to indicate external data to be transmitted.

[0021] From the above technical solutions, it can be seen that the beneficial effects of the embodiments of the present application compared with the prior art are as follows:

[0022] This application provides a data transmission system and method. A driving circuit drives at least one signal light to emit a light signal based on preset coded information. The radar device receives the light signal and performs control operations corresponding to the coded information based on the light signal. This wireless communication method can simultaneously transmit light signals to a large number of radar devices for detection, eliminating the need to test each radar device by plugging and unplugging data cables. This greatly shortens radar device detection time and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 This is a schematic diagram of an application scenario of an embodiment provided by the present application;

[0025] Figure 2 is a schematic flow chart of a data transmission method of the data transmission system provided by the present application;

[0026] Figure 3 This is a signal diagram of different lighting frequencies of the signal lights provided by this application;

[0027] Figure 4 This is a signal diagram of the signal lights provided in this application with different lighting durations. DETAILED DESCRIPTION

[0028] Currently, radar equipment production lines require dedicated data interfaces for testing. During the testing process, an operator typically connects the testing equipment to the dedicated data interface via a data cable to input control commands for testing the radar equipment. During this process, only one radar device can be tested at a time. After testing is complete, the data cable must be removed from the radar device's data interface and reconnected to the data interface of the next radar device for testing. If the radar equipment to be tested is large-scale, this process must be repeated for each device to complete the test. This method requires operators to repeatedly plug and unplug the data cable, severely impacting production efficiency.

[0029] To address this issue, the present application provides a data transmission system that controls radar equipment through optical transmission, eliminating the need for wired transmission to detect each radar device one by one. This wireless communication method can simultaneously transmit optical signals to a large number of radar devices for detection, significantly shortening the detection time of radar devices and thus improving production efficiency.

[0030] Before introducing the specific embodiments of a data transmission system and method provided by the present application, some of the descriptive terms involved in the context are first explained.

[0031] In the following description, specific details such as data transmission systems and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0032] It should be understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0033] As used in the specification of this application and the appended claims, the term "if" can be interpreted as "when...", "once...", "if...", or "under the circumstances...", depending on the context. In addition, in the description of the specification of this application and the appended claims, the terms "first", "second", etc. are used only to distinguish descriptions and should not be understood as indicating or implying relative importance.

[0034] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof all mean "including but not limited to," unless otherwise specifically emphasized.

[0035] The present application provides a data transmission system, including a driving circuit, at least one signal light and a radar device.

[0036] Among them, the radar equipment can be laser radar, millimeter wave radar, microwave radar and other radar equipment that can sense the surrounding environment.

[0037] As an example and not a limitation, the type of signal light can be a signal light that can emit visible light, infrared light, ultraviolet light, radio waves, X-rays, gamma rays (Y-rays), etc. The function of the signal light is to use changes in light to emit various light signals. The embodiment of the present application does not impose any limitation on the specific type of signal light, and it can be selected based on the type of radar equipment.

[0038] For example, if the radar device is a laser radar, the wavelength of the light signal emitted by the selected signal lamp should be different from the wavelength of the laser emitted by the laser radar device. It is understandable that if the wavelength of the light signal emitted by the signal lamp is the same as the wavelength of the laser emitted by the laser radar device, then the laser receiving device of the laser radar device may mistakenly receive the light signal emitted by the signal lamp, which will interfere with the normal operation of the laser radar device. For example, the laser radar device is performing a ranging task. If the wavelength of the light signal emitted by the signal lamp at this time is the same as the wavelength of the laser emitted by the laser radar device transmitting device, it may affect the accuracy of the ranging. Those skilled in the art here can clearly understand that the existing laser radar device will be provided with a laser transmitting device and a receiving device to realize the ranging function, and the transmitting device and the receiving device of the laser radar device will not be described in detail here.

[0039] Optionally, one end of the driver circuit is connected to a signal light, and the other end is connected to a terminal device. A serial port instruction and / or interface instruction with preset coding information is input to the driver circuit via the terminal device. The driver circuit then controls the signal light to emit a light signal based on the serial port instruction and / or interface instruction. This application does not impose any restrictions on the design of the driver circuit. For example, assume that the serial port instruction for turning on a radar device is 1E 2D 4F, and the preset coding information corresponding to the radar device control operation is to light the signal light for 10 seconds. If a user wants to control the radar device to turn on, the user simply inputs the serial port instruction 1E 2D 4F via the terminal device. The driver circuit controls the signal light to light for 10 seconds based on the serial port instruction 1E 2D 4F. Once the photoelectric detection component in the radar device receives the light signal indicating that the signal light is lit for 10 seconds, other electrical modules will execute the radar device turning on operation. Other electrical modules are provided in the radar device to perform control operations. Serial port instructions and / or interface instructions are generally in hexadecimal, and this application does not impose any restrictions on the properties of the serial port communication.

[0040] For example, Figure 1 The following is a schematic diagram of an application scenario of an embodiment of the present application. As an example and not a limitation, the system can be applied to the data transmission process of the laser radar device 103. For ease of explanation, only the part related to the embodiment of the present application is shown.

[0041] Alternatively, let's take a signal light 102 and a lidar device 103 as an example. In use, a user inputs serial port commands through terminal device 101. Driver circuit 104 controls signal light 102 to emit a light signal based on the received serial port commands. Lidar device 103 then performs control operations corresponding to preset coded information based on the light signal. Lidar device 103 is provided with a housing whose top and / or sides allow the light signal emitted by signal light 101 to be transmitted.

[0042] It should be understood that Figure 1 The illustrated lidar device 103 can be comprised of a photoelectric detection assembly and / or a light-sensing sensor, a housing, and other units and / or components to form a complete product. Those skilled in the art will readily appreciate that the embodiments of this application only relate to the data transmission method, and that the other units and / or components are those required for the normal operation of the lidar device, and are not limited in any way by the embodiments of this application.

[0043] like Figure 2 FIG. 1 is a schematic flow chart of a data transmission method of the data transmission system of the present application, including the following S201 and S202:

[0044] S201: A driving circuit drives at least one signal lamp to emit a light signal according to preset coding information.

[0045] S202: The radar device receives the optical signal and performs a control operation corresponding to the coded information according to the optical signal.

[0046] Control operations can include starting and stopping the radar equipment, entering debugging mode, importing data, updating firmware, calibrating data, demarcating data and detecting data, adjusting the rotation speed, adjusting the radar sampling rate, adjusting the radar light source power, adjusting the radar light source modulation mode, and other operations that can be used to control the radar equipment.

[0047] In one example, a radar device may be equipped with a photoelectric detection component capable of receiving and converting optical signals. For example, the optical signal may be converted into a high or low level. For example, when it is on, it is a high level, and when it is off, it is a low level. The optical signal is identified by an electrical signal, and a control operation corresponding to the coded information is executed.

[0048] There is at least one signal light that emits a light signal, and the light signal emitted by the signal light is used to instruct the radar device to perform a control operation corresponding to the coded information. Different coded information will result in different durations and / or frequencies of the light signal emitted by the signal light. That is, different coded information will result in different blinking states of the signal light; if there are multiple signal lights, different coded information will also use different blinking times of the signal light to express different control information. Different lighting durations and / or lighting frequencies of the signal light can indicate that the radar device is performing different functions. For different control operations, the time intervals between two consecutive lighting of the signal light can be the same or different.

[0049] For example, the transmission system includes a signal light. Coded information 1 is that the signal light lights up every 1 millisecond. The control operation corresponding to the code information 1 is that the radar device starts receiving data. Coded information 2 is that the signal light lights up every 5 milliseconds. The control operation corresponding to the code information 2 is that the radar device starts. Coded information 3 is that the signal light lights up every 10 milliseconds. The control operation corresponding to the code information 3 is that the radar device stops running. Coded information 4 is that the signal light lights up every 20 milliseconds. The control operation corresponding to the code information 4 is that the radar device enters the debugging mode. Figure 3 This is a schematic diagram of the signal received by the radar equipment when the signal light lights up at different frequencies.

[0050] Similarly, the transmission system includes a signal light, and the coded information 5 is that the signal light is lit once every 1 millisecond for 1 millisecond, and the control operation corresponding to the coded information 5 is data import. The coded information 6 is that the signal light is lit once every 1 millisecond for 5 milliseconds, and the control operation corresponding to the coded information 6 is starting the radar device. The coded information 7 is that the signal light is lit once every 1 millisecond for 10 milliseconds, and the control operation corresponding to the coded information 7 is stopping the operation. The coded information 8 is that the signal light is lit once every 1 millisecond for 20 milliseconds, and the control operation corresponding to the coded information 8 is that the radar device enters the debugging mode. Figure 4 This is a schematic diagram of a radar device receiving two signals with equal time intervals but different lighting durations.

[0051] Alternatively, if the transmission system includes multiple signal lights, for example, four, coded information 9 indicates that one signal light is illuminated once, and the control operation corresponding to coded information 9 is a firmware update. Coded information 10 indicates that two signal lights are illuminated simultaneously, and the control operation corresponding to coded information 10 is data calibration. Coded information 11 indicates that three signal lights are illuminated simultaneously, and the control operation corresponding to coded information 11 is data detection. Coded information 12 indicates that all four signal lights are illuminated simultaneously, and the control operation corresponding to coded information 12 is shutting down the radar device, etc.

[0052] It should be noted that when there are multiple signal lights, the multiple signal lights are evenly distributed on the top and / or sides of the radar device. The radar device is provided with a housing, and the top and / or sides of the housing can transmit optical signals. The material of the housing on the radar device does not affect data transmission, and this embodiment of the application does not impose any restrictions on the material of the housing.

[0053] It should be noted that if a data import operation is required, the coded information corresponding to the data import operation includes first sub-coding information and second sub-coding information. The first sub-coding information is used to instruct the radar device to start the data import operation, and the second sub-coding information is used to indicate the external data to be transmitted.

[0054] In the embodiments of the present application, input import operations may include updating, modifying, and storing. For example, when a radar device is measuring distance, the original range value is A. Now the original data needs to be modified, and the modified value is the original range value minus 10, that is, the modified value should be A-10. Then, according to the data transmission method of the present application, the first sub-coding information is used to indicate the initiation of the data modification operation, and the second sub-coding information is used to indicate the data to be transmitted -10.

[0055] The driving circuit drives the signal light based on the first sub-code information to emit a light signal corresponding to the first sub-code information. The light signal is then transmitted through the radar device's housing to a photoelectric detection component within the radar device. The photoelectric detection component converts the received light signal into an electrical signal, and the radar device initiates the operation of modifying the distance measurement value based on the electrical signal. The driving circuit then drives the signal light based on the second sub-code information to emit a light signal corresponding to the second sub-code information. The light signal is then transmitted through the radar device's housing to a photoelectric detection component within the radar device. The photoelectric detection component converts the received light signal into an electrical signal, and the radar device determines the external data -10 based on the electrical signal, thereby completing the modification of the radar device's distance measurement. After the radar device receives the external data -10 for modifying the distance measurement, whether the data transmission modification is complete can be determined based on the actual distance measurement results at a later time. Alternatively, the signal light can be configured to flash to indicate completion of the data transmission (e.g., a flashing light indicates that data reception is complete). The present embodiments do not impose any restrictions on the feedback method and / or method used by the radar device after receiving the information.

[0056] In another example, the radar device may be provided with a light-sensing sensor capable of sensing light intensity and converting the light intensity into an electrical signal. In this case, the coded information may be to light up multiple signal lights simultaneously. For example, coded information 13 is to light up one signal light once, and the control operation corresponding to coded information 13 is a firmware update. Coded information 14 is to light up two signal lights simultaneously once, and the control operation corresponding to coded information 14 is data calibration. Coded information 15 is to light up three signal lights simultaneously once, and the control operation corresponding to coded information 15 is data detection. Coded information 16 is to light up four signal lights simultaneously once, and the control operation corresponding to coded information 16 is to shut down the radar device.

[0057] It should be understood that the coded information can also represent different light intensity levels of a signal light. For example, coded information 17 represents the first level of light intensity, and the control operation corresponding to coded information 17 is firmware update. Coded information 18 represents the second level of light intensity, and the control operation corresponding to coded information 18 is data calibration. Coded information 19 represents the third level of light intensity, and the control operation corresponding to coded information 19 is data detection. Coded information 20 represents the fourth level of light intensity, and the control operation corresponding to coded information 20 is radar device shutdown.

[0058] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0059] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0060] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A data transmission system, characterized in that: It includes a terminal device, a driving circuit, at least one signal light and at least one radar device, wherein the driving circuit is connected to the terminal device and the at least one signal light; The terminal device is used to send preset coding information to the driving circuit; The driving circuit is used to drive the at least one signal lamp to emit a light signal according to the coded information; Each radar device in the at least one radar device is configured to receive the optical signal and perform a control operation corresponding to the coded information according to the optical signal, wherein the control operation is configured to detect each radar device in the at least one radar device.

2. The system according to claim 1, wherein The control operations include: starting, stopping, entering debugging mode, data importing, firmware updating, data calibration, data calibration or detection, adjusting the rotation speed, adjusting the radar sampling rate, adjusting the radar light source power, and adjusting the radar light source modulation mode.

3. The system according to claim 1, wherein: The radar device is provided with a photoelectric detection component, which is used to receive the optical signal and convert the optical signal into an electrical signal.

4. The system according to claim 1, wherein: The wavelength of the optical signal is different from the wavelength of the electromagnetic wave emitted by the radar device.

5. The system according to claim 1, wherein: The coded information includes the lighting duration, lighting frequency, and / or lighting brightness of the signal light.

6. The system according to claim 5, wherein: The coded information also includes the number of times the signal light flashes.

7. The system according to claim 1, wherein: The radar device is a laser radar.

8. The system according to claim 1, wherein: The radar device is provided with an outer cover, and the top and / or side of the outer cover allow the optical signal to be transmitted; if the signal lamps include multiple ones, the multiple signal lamps are evenly distributed on the top and / or side of the radar device.

9. A data transmission method, characterized in that: Applied to the data transmission system according to claims 1 to 8, the method comprises: The driving circuit receives the preset coding information sent by the terminal device, and drives the at least one signal light to emit a light signal according to the coding information; Each radar device in the at least one radar device is configured to receive the optical signal and perform a control operation corresponding to the coded information according to the optical signal, wherein the control operation is configured to detect each radar device in the at least one radar device.

10. The method according to claim 9, characterized in that The control operation includes a data import operation, and the coding information corresponding to the data import operation includes first sub-coding information and second sub-coding information. The first sub-coding information is used to instruct the radar device to start data import, and the second sub-coding information is used to indicate external data to be transmitted.

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