Distance measuring system with visible light indication and distance measuring method

Abstract

The invention relates to the technical field of distance measurement, in particular to a distance measurement system with visible light indication and a distance measurement method, and the system comprises a transmitting optical lens group, a semi-reflecting and semi-transmitting lens, an indication laser light source, a transmitting measurement laser light source and a receiving system. Wherein the indicating laser light source and the measuring laser emitting light source are connected with the two sides of the semi-reflecting and semi-transmitting lens respectively, emitted visible light and measuring laser are output through the lens set, and the receiving system receives reflected measuring laser signals and transmits the reflected measuring laser signals to the processing system to be processed and analyzed. In addition, the device further comprises a shell and a supporting frame which are used for packaging and fixing all parts. According to the invention, through reasonable configuration of the components, a high-precision distance measurement function is realized, and meanwhile, visible light is utilized to indicate the position of a measurement point, so that the operation convenience and accuracy are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of distance measurement, and in particular to a distance measurement system with visible light indication and a distance measurement method. Background Art

[0002] Long-distance laser ranging technology has a wide range of applications in industrial inspection, mapping, security monitoring and other fields. Traditional laser ranging equipment usually uses infrared invisible laser as the measuring beam. In order to have the indication function, it is often necessary to add an additional visible laser indication system. This design can not only improve the operator's work efficiency, but also accurately calibrate the measurement point in a complex environment. However, existing laser ranging devices have some limitations in design, which limit their performance in certain application scenarios.

[0003] In traditional laser distance measuring equipment, two independent optical systems are usually used to achieve measurement and indication functions. Specifically, one system is responsible for emitting the measurement laser, and the other system is responsible for emitting the visible indication laser. The measurement laser usually uses infrared light, which is sent out through the transmission system, and then the reflected signal is captured by the receiving system, and finally sent to the processing system for analysis and calculation to obtain the distance information of the target. At the same time, the indication laser is emitted through another independent transmission system to intuitively display the position of the measurement point. Although this method can meet the basic measurement and indication needs, it has many inconveniences in practical applications.

[0004] Although the above method solves the needs of measurement and indication to a certain extent, it still has obvious defects. First, the design of multiple optical systems leads to a larger overall volume, increases the weight and size of the equipment, and is not convenient to carry and install. Secondly, since the measuring laser and the indicating laser are emitted by different systems, the two cannot be completely coaxial, which may cause position deviation between the measuring point and the indicating point, affecting the measurement accuracy. In addition, the configuration of multiple systems also increases the manufacturing cost and assembly difficulty, which is not conducive to large-scale production and promotion and application. Therefore, how to simplify the system structure and reduce costs while ensuring measurement accuracy has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] In order to ensure measurement accuracy while simplifying the system structure and reducing costs, the present application provides a ranging system with visible light indication and a ranging method.

[0006] The above-mentioned invention objective of the present application is achieved through the following technical solutions: A visible light indication ranging system, comprising a transmitting optical lens group, a semi-reflective and semi-mirror lens, an indicating laser light source, an transmitting and measuring laser light source and a receiving system; wherein the indicating laser light source is connected to one side of the semi-reflective and semi-mirror lens, and the emitted visible light is transmitted to the axis of the optical system through the semi-reflective and semi-mirror lens, and is output through the transmitting optical lens group; the transmitting and measuring laser light source is connected to the other side of the semi-reflective and semi-mirror lens, and the emitted measuring laser is reflected to the axis of the optical system through the semi-reflective and semi-mirror lens, and is output through the transmitting optical lens group; the receiving system is arranged opposite to the transmitting optical lens group, and is used to receive the reflected measuring laser signal and transmit it to The processing system processes and analyzes; the positions of the indicating laser light source and the emitting and measuring laser light source can be interchanged; the wavelength range of the visible light emitted by the indicating laser light source is 400nm to 700nm; the reflectivity and transmittance of the semi-reflective and semi-mirror lens can be adjusted according to actual needs; the emitting optical lens group includes a plurality of lenses for focusing and collimating the laser beam; the receiving system includes a photodetector for converting the received laser signal into an electrical signal; and also includes a housing for encapsulating the emitting optical lens group, the semi-reflective and semi-mirror lens, the indicating laser light source, the emitting and measuring laser light source and the receiving system.

[0007] By adopting the above technical solution, the measuring beam and the indicator beam share the same emission system, which significantly reduces the volume and cost of the system. At the same time, the design simplifies the assembly process and improves production efficiency. Since the indicator laser and the measuring laser enter the axis of the optical system through different paths of the semi-reflective and semi-mirror lens, the precise coaxiality of the two is ensured, the position deviation caused by the discrete system in the traditional method is eliminated, and the measurement accuracy is improved. In addition, the wavelength range of the indicator laser light source is 400nm to 700nm, and different colors can be selected according to actual needs, which enhances the applicability and flexibility of the product. The measuring laser light source supports a variety of measurement methods, such as time-of-flight method and phase difference method, which further improves the accuracy and reliability of the measurement. The multi-lens design of the emission optical lens group can effectively focus and collimate the laser beam, ensuring the stability and consistency of the measurement signal. The photodetector in the receiving system can efficiently convert the received laser signal into an electrical signal, which is convenient for subsequent processing and analysis. The entire module is encapsulated in a housing, providing good protection performance and extending the service life.

[0008] Preferably, it also includes a support frame fixed inside the shell, which is used to support the installation position of the emitting optical lens group, the semi-reflective and semi-mirror lens, the indicating laser light source, the emitting and measuring laser light source and the receiving system.

[0009] By adopting the above technical solution, the measurement beam and the indicator beam share a single emission system, which significantly reduces the size of the equipment, reduces costs, simplifies the assembly process, and eliminates the position difference problem caused by different axes of indication and emission. The addition of the support frame further improves the installation stability of each component and ensures the reliability and accuracy of the equipment in various environments.

[0010] The second object of the invention is achieved by the following technical solutions: A method for measuring distance with visible light indication, the method comprising the steps of: Acquire the power of the indicating laser light source, emit visible light based on the power of the indicating laser light source, and transmit it to the axis of the optical system through the semi-reflective and semi-mirror lens; Acquire the power of the measuring laser light source, emit the measuring laser based on the power of the measuring laser light source, and reflect the measuring laser to the axis of the optical system through the semi-reflective and semi-mirror lens; The measuring laser and visible light are outputted through the transmitting optical lens group, a reflected measuring laser signal is formed and received, and a measuring electrical signal is acquired based on the measuring laser signal; The measured distance is calculated based on the measured electrical signal to form a distance measurement result, which is transmitted to a display device for viewing by a user.

[0011] By adopting the above technical scheme, the power of the indicating laser light source is obtained, and visible light is emitted based on the power of the indicating laser light source, thereby ensuring that the intensity of the visible light is moderate, which can not only clearly indicate the position at the measuring point, but also will not interfere with the signal of the measuring laser, thereby improving the indication accuracy and reliability. The measuring laser is emitted based on the measuring laser light source power, and is reflected to the axis of the optical system through a semi-reflective and semi-mirror lens, thereby ensuring that the intensity of the measuring laser is strong enough to complete the precise ranging task, while avoiding signal loss or misjudgment caused by too low power, thereby improving the accuracy of ranging, utilizing the same set of transmitting systems, reducing the complexity and cost of the system, while ensuring the coaxiality of the measuring laser and visible light, eliminating the error caused by position difference, improving the stability and accuracy of ranging, realizing automation from signal acquisition to data processing, improving the speed and efficiency of data processing, enabling users to quickly obtain accurate ranging results, and improving user experience.

[0012] In a preferred example, the present application can be further configured as follows: the distance measurement method with visible light indication also includes the steps of: Acquiring parameter information of the semi-reflective and semi-mirror lens sheet, and generating parameter adjustment instructions and parameter thresholds based on the measured laser light source power and the indicated laser light source power; In response to the parameter adjustment instruction, parameter adjustment data is obtained, and the parameters of the semi-reflective and semi-mirror lens are adjusted according to the parameter adjustment data until the parameters of the semi-reflective and semi-mirror lens reach a parameter threshold.

[0013] By adopting the above technical scheme, by obtaining the parameter information of the semi-reflective and semi-mirror lens, and generating parameter adjustment instructions and parameter thresholds based on the power of the measuring laser light source and the indicating laser light source, it is ensured that the parameters of the semi-reflective and semi-mirror lens can be kept in the optimal state during the measurement process, thereby improving the ranging accuracy and stability. In response to the parameter adjustment instruction, the parameter adjustment data is obtained in real time and the parameters of the semi-reflective and semi-mirror lens are dynamically adjusted, so that the system can adaptively cope with different measurement environments and conditions, thereby enhancing the robustness and flexibility of the system. By accurately adjusting the parameters of the semi-reflective and semi-mirror lens, the intensity ratio of the measuring laser and the indicating laser is made more reasonable, thereby avoiding mutual interference and further improving the ranging accuracy and reliability.

[0014] In a preferred example, the present application may be further configured as follows: the step of obtaining the indicating laser light source power and emitting visible light based on the indicating laser light source power specifically includes: Acquire ranging environment data, and acquire an output power correction value based on the ranging environment data; The power of the indicating laser light source is regulated according to the output power correction value to obtain the regulated power of the indicating laser light source, and visible light is emitted based on the regulated power of the indicating laser light source.

[0015] By adopting the above technical solution, environmental parameters of the ranging site, such as temperature, humidity, atmospheric refractive index, etc., are collected to evaluate the impact of the environment on laser propagation. The output power correction value is calculated using the environmental parameters to ensure the accuracy of the laser light source output power under different environments. The correction value is applied to adjust the power of the indicator laser light source so that the indicator light beam maintains optimal performance in a specific environment and adapts to different ranging environments to avoid excessively strong or weak light beams affecting the measurement accuracy. Finally, visible light is emitted according to the regulated power to ensure that the indicator light beam can clearly and accurately indicate the position of the measurement point in various ranging environments without affecting the signal quality of the measuring laser. This realizes intelligent regulation of the indicator laser light source and improves the applicability and reliability of the ranging module in different environments.

[0016] In a preferred example, the present application may be further configured as follows: the obtaining of the measurement laser light source power and the emitting of the measurement laser based on the measurement laser light source power specifically include: Acquire the measured laser light speed based on the measured laser light source power, acquire the distance measurement environment data, and acquire the laser light speed correction value based on the distance measurement environment data; Correcting the measured laser light speed according to the laser light speed correction value to obtain a corrected measured laser light speed, and acquiring measured laser light source power correction data based on the corrected measured laser light speed; The power of the measuring laser light source is regulated according to the measuring laser light source power correction data to obtain the regulated power of the measuring laser light source, and visible light is emitted based on the regulated power of the measuring laser light source.

[0017] By adopting the above technical scheme, the power of the measuring laser light source is obtained, the measuring laser light speed is obtained based on the power, and the ranging environment data is obtained at the same time. The laser light speed correction value is obtained through the environmental data, so as to correct the measuring laser light speed, ensure that the measurement accuracy is not affected by environmental factors, obtain the measuring laser light source power correction data based on the corrected measuring laser light speed, further adjust the measuring laser light source power, and finally emit a stable measuring laser suitable for the current ranging environment, thereby improving the accuracy and reliability of ranging, realizing the precise control of the measuring laser light source power, and ensuring that the best measurement performance can be obtained in different ranging environments.

[0018] In a preferred example, the present application may be further configured as follows: before the measuring laser and visible light are output through the emitting optical lens group, the distance measurement method with visible light indication further includes the steps of: Acquire lens data of the transmitting optical lens group, and acquire lens data adjustment instructions based on the measured laser light source power and the indicated laser light source power; In response to the lens data adjustment instruction, the lens data is adjusted to obtain the adjusted lens data, and the measuring laser and visible light are output based on the adjusted lens data.

[0019] By adopting the above technical scheme, the lens data of the emitting optical lens group is obtained to ensure that various parameters of the lens, such as focal length and collimation, are in the best state to ensure the quality of the subsequent laser light beam. The lens data adjustment instruction is obtained based on the power of the measuring laser light source and the indicating laser light source to ensure that the light intensity and spot size of the two light sources are appropriate when output to avoid mutual interference. In response to the lens data adjustment instruction, the lens data is adjusted in real time to dynamically adjust the focal length and collimation of the lens so that the measuring laser and visible light can be accurately output on the same axis, thereby improving the measurement accuracy and indication accuracy. After obtaining the regulated lens data, the output path of the measuring laser and visible light is further optimized to ensure that the light beam remains stable during propagation, reduce scattering and offset, and improve overall performance.

[0020] In a preferred example, the present application may be further configured as follows: before calculating the measured distance based on the measured electrical signal, the distance measurement method with visible light indication further includes the steps of: amplifying and filtering the measurement electrical signal to form a processed measurement electrical signal; The measured distance is calculated based on the processed measured electrical signal.

[0021] By adopting the above technical solution, high-quality processing of the measured electrical signal is achieved. Specifically, by amplifying and filtering the measured electrical signal, noise is effectively eliminated and the signal-to-noise ratio is improved, thereby ensuring that the subsequently calculated measured distance is more accurate and reliable. This processing step significantly improves the overall performance and measurement accuracy of the ranging module.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. The measuring beam and the indicator beam share the same emission system, which significantly reduces the size and cost of the system. At the same time, the design simplifies the assembly process and improves production efficiency. Since the indicator laser and the measuring laser enter the axis of the optical system through different paths of the semi-reflective and semi-mirror lens, the precise coaxiality of the two is ensured, the position deviation caused by the discrete system in the traditional method is eliminated, and the measurement accuracy is improved. In addition, the wavelength range of the indicator laser light source is 400nm to 700nm, and different colors can be selected according to actual needs, which enhances the applicability and flexibility of the product. The measuring laser light source supports a variety of measurement methods, such as time-of-flight method and phase difference method, which further improves the accuracy and reliability of the measurement. The multi-lens design of the emitting optical lens group can effectively focus and collimate the laser beam, ensuring the stability and consistency of the measurement signal. The photodetector in the receiving system can efficiently convert the received laser signal into an electrical signal, which is convenient for subsequent processing and analysis. The entire module is encapsulated in the outer shell, providing good protection performance and extending the service life; 2. The measurement beam and the indicator beam share a single emission system, which significantly reduces the size of the equipment, reduces costs, simplifies the assembly process, and eliminates the position difference problem caused by different axes of indication and emission. The addition of the support frame further improves the installation stability of each component, ensuring the reliability and accuracy of the equipment in various environments; 3. Obtain the indicating laser light source power, and emit visible light based on the indicating laser light source power, ensuring that the intensity of the visible light is moderate, which can clearly indicate the position at the measuring point without interfering with the measuring laser signal, thus improving the indicating accuracy and reliability. The measuring laser is emitted based on the measuring laser light source power, and is reflected to the axis of the optical system through the semi-reflective and semi-mirror lens, ensuring that the intensity of the measuring laser is strong enough to complete the precise ranging task, while avoiding signal loss or misjudgment caused by too low power, thus improving the ranging accuracy. The same transmitting system is used to reduce the complexity and cost of the system, while ensuring the coaxiality of the measuring laser and the visible light, eliminating the error caused by the position difference, improving the stability and accuracy of the ranging, realizing the automation from signal acquisition to data processing, improving the speed and efficiency of data processing, enabling users to quickly obtain accurate ranging results, and improving the user experience; 4. By obtaining the parameter information of the semi-reflective and semi-mirror film, and generating parameter adjustment instructions and parameter thresholds based on the power of the measuring laser light source and the indicating laser light source, it is ensured that the parameters of the semi-reflective and semi-mirror film can maintain the optimal state during the measurement process, thereby improving the ranging accuracy and stability. In response to the parameter adjustment instructions, the parameter adjustment data is obtained in real time, and the parameters of the semi-reflective and semi-mirror film are dynamically adjusted, so that the system can adaptively cope with different measurement environments and conditions, thereby enhancing the robustness and flexibility of the system. By precisely adjusting the parameters of the semi-reflective and semi-mirror film, the intensity ratio of the measuring laser and the indicating laser is made more reasonable, thus avoiding mutual interference and further improving the ranging accuracy and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of a ranging system with visible light indication in one embodiment of the present application; Figure 2 This is a flow chart of a method for ranging with visible light indication in one embodiment of the present application; Figure 3 This is a flow chart of adjusting the parameter data of a half-reflective half-mirror lens in a distance measurement method with visible light indication in one embodiment of the present application; Figure 4 This is a flow chart of adjusting the power of an indicating laser light source in a distance measurement method with visible light indication in one embodiment of the present application; Figure 5 This is a flow chart of adjusting the power of a measuring laser light source in a distance measurement method with visible light indication in one embodiment of the present application; Figure 6 This is a flow chart of adjusting the emission optical lens group in a distance measurement method with visible light indication in one embodiment of the present application; Figure 7 This is a flow chart of processing a measurement electrical signal in a distance measurement method with visible light indication in one embodiment of the present application.

[0024] Description of the drawings: 1. Transmitting optical lens group; 2. Semi-reflective and semi-mirror lens; 3. Indicating laser light source; 4. Transmitting and measuring laser light source; 5. Receiving system. DETAILED DESCRIPTION

[0025] The present application is further described in detail below in conjunction with the accompanying drawings.

[0026] In one embodiment, if Figure 1As shown, the present application discloses a ranging system with visible light indication, including a transmitting optical lens group 1, a semi-reflective and semi-mirror lens 2, an indicating laser light source 3, an emitting and measuring laser light source 4 and a receiving system 5. Among them, the indicating laser light source 3 is connected to one side of the semi-reflective and semi-mirror lens 2, and the emitted visible light is transmitted to the axis of the optical system through the semi-reflective and semi-mirror lens 2, and is output through the transmitting optical lens group 1; the emitting and measuring laser light source 4 is connected to the other side of the semi-reflective and semi-mirror lens 2, and the emitted measuring laser is reflected to the axis of the optical system through the semi-reflective and semi-mirror lens 2, and is output through the transmitting optical lens group 1. The receiving system 5 is arranged opposite to the transmitting optical lens group 1, and is used to receive the reflected measuring laser signal and transmit it to the processing system for processing and analysis. The positions of the indicating laser light source 3 and the emitting and measuring laser light source 4 can be interchanged; the wavelength range of the visible light emitted by the indicating laser light source 3 is 400nm to 700nm; the measuring method of the measuring laser light source is the time-of-flight method or the phase difference method; the reflectivity and transmittance of the semi-reflective and semi-mirror lens 2 can be adjusted according to actual needs; the emitting optical lens group 1 includes a plurality of lenses for focusing and collimating the laser light beam; the receiving system 5 includes a photodetector for converting the received laser signal into an electrical signal; and also includes a housing for encapsulating the emitting optical lens group 1, the semi-reflective and semi-mirror lens 2, the indicating laser light source 3, the emitting and measuring laser light source 4 and the receiving system 5.

[0027] Specifically, the emitting optical lens group 1 includes multiple lenses, such as convex lenses and concave lenses. These lenses can be made of glass or plastic according to actual needs to adapt to different working environments and cost budgets. The convex lens is mainly used to focus the laser beam to ensure that the beam maintains a high energy density during long-distance transmission; the concave lens is used to collimate the laser beam, reduce the divergence angle of the beam, and improve the measurement accuracy. The two lenses can be fixed together by means of threads or buckles to form a compact and stable optical component.

[0028] The semi-reflective and semi-mirror lens 2 is a special optical element, and its reflectivity and transmittance can be adjusted according to actual needs. For example, a semi-reflective and semi-mirror lens 2 with a reflectivity of 50% and a transmittance of 50% can be selected, or other ratios can be selected according to specific application requirements. The material of the semi-reflective and semi-mirror lens 2 can be coated glass or plastic, which has good weather resistance and stability. By adjusting the reflectivity and transmittance of the semi-reflective and semi-mirror lens 2, the indication laser can be clearly visible while ensuring the measurement laser intensity, thereby achieving accurate measurement and indication functions.

[0029] The indicating laser light source 3 can be a laser diode or a laser, and the wavelength range of the visible light emitted is 400nm to 700nm, including multiple colors such as red and green. For example, a red laser diode or a green laser can be selected. These light sources can be controlled by the driving circuit on the circuit board to ensure that the intensity of the visible light emitted is moderate, which can clearly indicate the position of the measuring point and does not interfere with the signal of the measuring laser. The indicating laser light source 3 can be fixed to one side of the semi-reflective and semi-mirror lens 2 by screws or adhesives to ensure that its optical path is stable and reliable.

[0030] The emitted measuring laser light source 4 can also be a laser diode or a laser, and the emitted measuring laser wavelength is usually near-infrared light to avoid damage to the human eye. These light sources can also be controlled by the driving circuit on the circuit board to ensure that the intensity of the emitted measuring laser is high enough to complete accurate distance measurement. The emitted measuring laser light source 4 can be fixed to the other side of the semi-reflective and semi-mirror lens 2 by screws or adhesives to ensure that its optical path is stable and reliable. The measuring method of the measuring laser light source can be the time flight method or the phase difference method, both of which can achieve high-precision distance measurement.

[0031] The receiving system 5 includes a photodetector for converting the received laser signal into an electrical signal. The photodetector can be a silicon photodiode or an avalanche photodiode, which has the characteristics of high sensitivity and fast response. The photodetector can perform signal processing through the amplifier and filter on the circuit board to eliminate noise and improve the signal-to-noise ratio. The receiving system 5 can also include a lens for converging the received laser signal onto the photodetector to increase the signal strength. The lens can be a spherical lens or an aspherical lens, and the appropriate material and shape can be selected according to actual needs.

[0032] The housing is used to encapsulate the entire ranging module and protect the internal components from the external environment. The housing can be made of metal or plastic and has good protective performance. A heat sink or fan can be set inside the housing to help the internal components dissipate heat and extend the service life. Interfaces can be set on the surface of the housing to connect power, data cables and other external devices.

[0033] The support frame is fixed inside the housing and is used to support the installation positions of the transmitting optical lens group 1, the semi-reflective and semi-mirror lens 2, the indicating laser light source 3, the transmitting and measuring laser light source 4 and the receiving system 5. The support frame can be made of metal or plastic material and has good mechanical strength and stability. The support frame can be fixed to the inner wall of the housing by screws or adhesives to ensure that the installation positions of the components are stable and reliable. The support frame can also be provided with multiple mounting holes or slots to facilitate the installation and removal of each component and improve the convenience of maintenance and repair.

[0034] The implementation principle of a visible light indication ranging system in an embodiment of the present application is as follows: by using the indicating laser light source 3 and the emitting measuring laser light source 4 to share the same emission system, the synchronous output of the measuring light beam and the indicating light beam is achieved. The use of the semi-reflective and semi-mirror lens 2 allows the two light beams to propagate on the same axis, avoiding the position deviation problem caused by the traditional dual-system design. At the same time, by adjusting the reflectivity and transmittance of the semi-reflective and semi-mirror lens 2, the indicating laser can be clearly visible while ensuring the intensity of the measuring laser, thereby improving the measurement accuracy and reliability. In addition, the design of a single emission system significantly reduces the size and cost of the equipment, is easy to carry and install, and is suitable for various application scenarios.

[0035] In one embodiment, if Figure 2 As shown, the present application also discloses a method for ranging with visible light indication applied to the above-mentioned ranging system with visible light indication, which specifically includes the following steps: S10: Acquire the indicating laser light source power, emit visible light based on the indicating laser light source power, and transmit it to the axis of the optical system through a semi-reflective and semi-mirror lens.

[0036] Specifically, the indicating laser light source power is obtained, and visible light is emitted based on the indicating laser light source power, ensuring that the intensity of the visible light is moderate, which can clearly indicate the position at the measuring point without interfering with the signal of the measuring laser, thereby improving the indication accuracy and reliability.

[0037] S20: Acquire the power of a measuring laser light source, emit a measuring laser based on the power of the measuring laser light source, and reflect the laser to the axis of the optical system through a semi-reflective and semi-mirror lens.

[0038] Specifically, a measuring laser is emitted based on the power of the measuring laser light source and reflected to the axis of the optical system through a semi-reflective and semi-transparent lens, thereby ensuring that the intensity of the measuring laser is strong enough to complete the precise ranging task, while avoiding signal loss or misjudgment due to low power, thereby improving the accuracy of ranging.

[0039] S30: The measuring laser and visible light are output through the transmitting optical lens group to form and receive the reflected measuring laser signal, and a measuring electrical signal is acquired based on the measuring laser signal.

[0040] Specifically, the measuring laser and visible light are output through the emission optical lens group and irradiated to the measuring point. The emission optical lens group focuses and collimates the laser beam to ensure that the beam quality meets the requirements.

[0041] Furthermore, the measuring laser is reflected by the target object and converged onto the photodetector through the lens of the receiving system. The photodetector converts the received laser signal into an electrical signal.

[0042] S40: Calculate the measured distance based on the measured electrical signal, form a distance measurement result, and transmit it to a display device for the user to view.

[0043] Specifically, the measured distance is calculated based on the processed electrical signal using the time-of-flight method or the phase difference method. The time-of-flight method calculates the distance by measuring the round-trip time of the laser signal, and the phase difference method calculates the distance by measuring the phase difference of the laser signal. Both methods can achieve high-precision distance measurement, and the calculated distance measurement results are displayed on a display screen or other output device for users to view.

[0044] In this embodiment, the power of the indicating laser light source is obtained, and visible light is emitted based on the power of the indicating laser light source, thereby ensuring that the intensity of the visible light is moderate, which can not only clearly indicate the position at the measuring point, but also will not interfere with the signal of the measuring laser, thereby improving the indication accuracy and reliability. The measuring laser is emitted based on the measuring laser light source power and is reflected to the axis of the optical system through a semi-reflective and semi-mirror lens, thereby ensuring that the intensity of the measuring laser is strong enough to complete the precise ranging task, while avoiding signal loss or misjudgment due to low power, thereby improving the accuracy of ranging, utilizing the same transmitting system, reducing the complexity and cost of the system, while ensuring the coaxiality of the measuring laser and the visible light, eliminating the error caused by the position difference, improving the stability and accuracy of ranging, realizing automation from signal acquisition to data processing, improving the speed and efficiency of data processing, enabling users to quickly obtain accurate ranging results, and improving user experience.

[0045] In one embodiment, if Figure 2 As shown, the distance measurement method with visible light indication also includes the steps of: S101: Acquire parameter information of a semi-reflective and semi-mirror lens sheet, and generate parameter adjustment instructions and parameter thresholds based on the measured laser light source power and the indicated laser light source power.

[0046] S102: Responding to the parameter adjustment instruction, obtaining parameter adjustment data, and adjusting the parameters of the semi-reflective and semi-mirror lens according to the parameter adjustment data until the parameters of the semi-reflective and semi-mirror lens reach a parameter threshold.

[0047] Specifically, by acquiring parameter information of the semi-reflective and semi-mirror lens, and generating parameter adjustment instructions and parameter thresholds based on the power of the measuring laser light source and the indicating laser light source, it is ensured that the parameters of the semi-reflective and semi-mirror lens can maintain an optimal state during the measurement process, thereby improving the ranging accuracy and stability. In response to the parameter adjustment instructions, the parameter adjustment data is acquired in real time and the parameters of the semi-reflective and semi-mirror lens are dynamically adjusted, so that the system can adaptively cope with different measurement environments and conditions, thereby enhancing the robustness and flexibility of the system. By precisely adjusting the parameters of the semi-reflective and semi-mirror lens, the intensity ratio of the measuring laser and the indicating laser is made more reasonable, mutual interference is avoided, and the ranging accuracy and reliability are further improved.

[0048] In one embodiment, if Figure 3 As shown, in step S10, the indicated laser light source power is obtained, and visible light is emitted based on the indicated laser light source power, specifically including: S11: Acquire ranging environment data, and acquire an output power correction value based on the ranging environment data.

[0049] S12: regulating the power of the indicating laser light source according to the output power correction value, acquiring the regulated power of the indicating laser light source, and emitting visible light based on the regulated power of the indicating laser light source.

[0050] Specifically, environmental parameters of the ranging site, such as temperature, humidity, atmospheric refractive index, etc., are collected to evaluate the impact of the environment on laser propagation. The output power correction value is calculated using the environmental parameters to ensure the accuracy of the laser light source output power in different environments. The correction value is applied to adjust the power of the indicator laser light source to keep the indicator light beam at its best performance in a specific environment and adapt it to different ranging environments to avoid excessively strong or weak light beams affecting the measurement accuracy. Finally, visible light is emitted according to the regulated power to ensure that the indicator light beam can clearly and accurately indicate the position of the measurement point in various ranging environments without affecting the signal quality of the measuring laser. This realizes intelligent control of the indicator laser light source and improves the applicability and reliability of the ranging module in different environments.

[0051] In one embodiment, if Figure 4 As shown, in step S20, the power of the measuring laser light source is obtained, and the measuring laser is emitted based on the power of the measuring laser light source, which specifically includes: S21: obtaining a measured laser light speed based on the measured laser light source power, obtaining distance measurement environment data, and obtaining a laser light speed correction value based on the distance measurement environment data.

[0052] S22: Correcting the measured laser light speed according to the laser light speed correction value to obtain a corrected measured laser light speed, and acquiring measurement laser light source power correction data based on the corrected measured laser light speed.

[0053] S23: regulating the power of the measuring laser light source according to the measuring laser light source power correction data, acquiring the regulated power of the measuring laser light source, and emitting visible light based on the regulated power of the measuring laser light source.

[0054] Specifically, the power of a measuring laser light source is obtained, and the measuring laser light speed is obtained based on the power. At the same time, the ranging environment data is obtained, and the laser light speed correction value is obtained through the environmental data, so as to correct the measuring laser light speed to ensure that the measurement accuracy is not affected by environmental factors. Based on the corrected measuring laser light speed, the measuring laser light source power correction data is obtained, and the measuring laser light source power is further adjusted to finally emit a stable measuring laser suitable for the current ranging environment, thereby improving the accuracy and reliability of ranging, realizing precise control of the measuring laser light source power, and ensuring that the best measurement performance can be obtained in different ranging environments.

[0055] In one embodiment, if Figure 5 As shown, before step S30, that is, before the measuring laser and visible light are output through the emitting optical lens group, the distance measurement method with visible light indication also includes the steps of: S301: Acquire lens data of a transmitting optical lens group, and acquire lens data adjustment instructions based on the measured laser light source power and the indicated laser light source power.

[0056] S302: responding to the lens data adjustment instruction, adjusting the lens data to obtain adjusted lens data, and outputting the measuring laser and visible light based on the adjusted lens data.

[0057] Specifically, the lens data of the emitting optical lens group is obtained to ensure that various parameters of the lens, such as focal length and collimation, are in the best state to ensure the quality of the subsequent laser light beam; lens data adjustment instructions are obtained based on the power of the measuring laser light source and the indicating laser light source to ensure that the light intensity and spot size of the two light sources are appropriate when output to avoid mutual interference; the lens data adjustment instructions are responded to, the lens data is adjusted in real time, and the focal length and collimation of the lens are dynamically adjusted to enable the measuring laser and visible light to be accurately output on the same axis, thereby improving the measurement accuracy and indication accuracy; after obtaining the regulated lens data, the output paths of the measuring laser and visible light are further optimized to ensure that the light beam remains stable during propagation, reduce scattering and offset, and improve overall performance.

[0058] In one embodiment, if Figure 6 As shown, before step S40, that is, before calculating the measured distance based on the measured electrical signal, the distance measurement method with visible light indication further includes the steps of: S401: Amplify and filter the measurement electrical signal to form a processed measurement electrical signal.

[0059] S402: Calculate the measurement distance based on the processed measurement electrical signal.

[0060] Specifically, high-quality processing of the measured electrical signal is achieved. Specifically, by amplifying and filtering the measured electrical signal, noise is effectively eliminated and the signal-to-noise ratio is improved, thereby ensuring that the subsequently calculated measured distance is more accurate and reliable. This processing step significantly improves the overall performance and measurement accuracy of the ranging module.

[0061] 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 the present application.

[0062] The embodiments described above 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, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A ranging system with visible light indication, characterized in that: The invention comprises a transmitting optical lens group (1), a semi-reflective and semi-mirror lens (2), an indicating laser light source (3), an transmitting and measuring laser light source (4) and a receiving system (5); wherein the indicating laser light source (3) is connected to one side of the semi-reflective and semi-mirror lens (2), and the emitted visible light is transmitted through the semi-reflective and semi-mirror lens (2) to the axis of the optical system and is output through the transmitting optical lens group (1); the transmitting and measuring laser light source (4) is connected to the other side of the semi-reflective and semi-mirror lens (2), and the emitted measuring laser is reflected through the semi-reflective and semi-mirror lens (2) to the axis of the optical system and is output through the transmitting optical lens group (1); and the receiving system (5) is arranged opposite to the transmitting optical lens group (1), and is used for receiving the reflected measuring laser signal and transmitting it to a processing unit (1); The invention relates to a method for transmitting optical signals of a laser beam to a receiver and a receiver for transmitting optical signals; the positions of the indicating laser light source (3) and the transmitting and measuring laser light source (4) can be interchanged; the wavelength range of the visible light emitted by the indicating laser light source (3) is 400 nm to 700 nm; the reflectivity and transmittance of the semi-reflective and semi-mirror lens (2) can be adjusted according to actual needs; the transmitting optical lens group (1) comprises a plurality of lenses for focusing and collimating the laser beam; the receiving system (5) comprises a photodetector for converting the received laser signal into an electrical signal; and a housing for encapsulating the transmitting optical lens group (1), the semi-reflective and semi-mirror lens (2), the indicating laser light source (3), the transmitting and measuring laser light source (4) and the receiving system (5).

2. A distance measurement system with visible light indication according to claim 1, characterized in that: It also includes a support frame fixed inside the shell and used to support the installation positions of the emitting optical lens group (1), the semi-reflective and semi-mirror lens (2), the indicating laser light source (3), the emitting and measuring laser light source (4) and the receiving system (5).

3. A distance measurement method with visible light indication, characterized in that: The distance measurement method with visible light indication comprises the steps of: Acquire the indicating laser light source power, emit visible light based on the indicating laser light source power, and transmit the visible light to the axis of the optical system through the semi-reflective and semi-mirror lens; Acquire the power of the measuring laser light source, emit the measuring laser based on the power of the measuring laser light source, and reflect the measuring laser to the axis of the optical system through the semi-reflective and semi-mirror lens; The measuring laser and visible light are outputted through the transmitting optical lens group, a reflected measuring laser signal is formed and received, and a measuring electrical signal is acquired based on the measuring laser signal; The measured distance is calculated based on the measured electrical signal to form a distance measurement result, which is transmitted to a display device for viewing by a user.

4. A distance measurement method with visible light indication according to claim 3, characterized in that: The method for measuring distance with visible light indication also includes the steps of: Acquiring parameter information of the semi-reflective and semi-mirror lens sheet, and generating parameter adjustment instructions and parameter thresholds based on the measured laser light source power and the indicated laser light source power; In response to the parameter adjustment instruction, parameter adjustment data is obtained, and the parameters of the semi-reflective and semi-mirror lens sheet are adjusted according to the parameter adjustment data until the parameters of the semi-reflective and semi-mirror lens sheet reach a parameter threshold.

5. The method for measuring distance with visible light indication according to claim 3, characterized in that: The obtaining of the indicated laser light source power and emitting visible light based on the indicated laser light source power specifically includes: Acquire ranging environment data, and acquire an output power correction value based on the ranging environment data; The power of the indicating laser light source is regulated according to the output power correction value to obtain the regulated power of the indicating laser light source, and visible light is emitted based on the regulated power of the indicating laser light source.

6. A distance measurement method with visible light indication according to claim 3, characterized in that: The obtaining of the measurement laser light source power and emitting the measurement laser based on the measurement laser light source power specifically includes: Acquire the measured laser light speed based on the measured laser light source power, acquire the distance measurement environment data, and acquire the laser light speed correction value based on the distance measurement environment data; Correcting the measured laser light speed according to the laser light speed correction value to obtain a corrected measured laser light speed, and acquiring measured laser light source power correction data based on the corrected measured laser light speed; The power of the measuring laser light source is regulated according to the measuring laser light source power correction data to obtain the regulated power of the measuring laser light source, and visible light is emitted based on the regulated power of the measuring laser light source.

7. A distance measurement method with visible light indication according to claim 3, characterized in that: Before the measuring laser and visible light are output through the emitting optical lens group, the distance measurement method with visible light indication further includes the steps of: Acquire lens data of the transmitting optical lens group, and acquire lens data adjustment instructions based on the measured laser light source power and the indicated laser light source power; In response to the lens data adjustment instruction, the lens data is adjusted to obtain the adjusted lens data, and the measuring laser and visible light are output based on the adjusted lens data.

8. The method for measuring distance with visible light indication according to claim 3, characterized in that: Before calculating the measured distance based on the measured electrical signal, the distance measurement method with visible light indication further includes the steps of: amplifying and filtering the measurement electrical signal to form a processed measurement electrical signal; The measured distance is calculated based on the processed measured electrical signal.

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