Chaotic light generating device, measuring system and measuring method

Abstract

The embodiment of the invention provides a chaotic light generation device, a measurement system and a measurement method, and relates to the technical field of measurement. The laser generator is used for entering a chaotic state if a second laser signal is received under the condition that the first laser signal is emitted; and transmitting the chaotic optical signal. During measurement, the chaotic light is used as a measurement signal, and the to-be-measured object is measured by using the characteristics of strong anti-interference capability, high resolution and nano-scale measurement of the chaotic light, so that the measurement precision can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of measurement technology, and in particular to a chaotic light generating device, a measurement system and a measurement method. Background Art

[0002] Measurement is the key to ensuring product quality. By measuring the key parameters of a product, it can be determined whether the product meets the standards. With the development of technology, higher requirements are placed on the accuracy of measurement. For example, when measuring the tiny vibration of the moving contact plate of an automotive relay during the pull-in process, the vibration amplitude is in the micrometer range. The current measurement method is difficult to meet the measurement accuracy requirements. Summary of the invention

[0003] The embodiments of the present application provide a chaotic light generating device, a measurement system and a measurement method, which can effectively improve the measurement accuracy.

[0004] In a first aspect, an embodiment of the present application provides a chaotic light generating device, comprising: a laser generator;

[0005] The laser generator is used for:

[0006] In the case of emitting the first laser signal, if the second laser signal is received, a chaotic state is entered;

[0007] Emit chaotic light signals.

[0008] In some embodiments, the chaotic light generating device further comprises: a feedback component;

[0009] The feedback component is used to:

[0010] Splitting the first laser signal to obtain a second laser signal and a third laser signal;

[0011] The second laser signal is transmitted to the laser generator, and the third laser signal is emitted to the outside.

[0012] In some embodiments, the feedback component includes an optical connector and a light splitting structure;

[0013] The optical connector is used to transmit the first laser signal to the light splitting structure;

[0014] The light splitting structure is used to split the first laser signal to obtain a second laser signal and a third laser signal, transmit the second laser signal to the optical connector, and transmit the third laser signal to the outside;

[0015] The optical connector is also used to transmit the second laser signal to the laser generator.

[0016] In some embodiments, the light splitting structure includes: a first light splitter and a second light splitter;

[0017] The first optical splitter is used to split the first laser signal to obtain a fourth laser signal and a fifth laser signal, and to self-inject the fourth laser signal, and to transmit the fifth laser signal to the second optical splitter;

[0018] The second optical splitter is used to split the fifth laser signal to obtain the second laser signal and the third laser signal.

[0019] In some embodiments, the first beam splitter further comprises a ring cavity;

[0020] The fourth laser signal is self-injected through the ring cavity.

[0021] In some embodiments, the chaotic light generating device further comprises a first adjustment component;

[0022] The first adjustment component is used to:

[0023] receiving the second laser signal sent by the second beam splitter, and adjusting parameters of the second laser signal to preset parameters; the parameters at least include light intensity;

[0024] The second laser signal after parameter adjustment is transmitted to the optical connector.

[0025] In some embodiments, the chaotic light generating device further comprises a second adjustment component;

[0026] The second adjustment component is used to:

[0027] During the operation of the laser generator, monitoring the current and / or temperature of the laser generator;

[0028] When the current and / or the temperature are not within the corresponding range, the current and / or the temperature are adjusted to the corresponding preset interval.

[0029] In some embodiments, the second laser signal is a laser signal reflected by an object that receives the first laser signal.

[0030] In a second aspect, an embodiment of the present application provides a measurement system, the measurement system comprising: a chaotic light generating device, a photoelectric conversion device and a measurement device, the chaotic light generating device being the chaotic light generating device described in any one of the first aspect;

[0031] The chaotic light generating device is used to send a chaotic light signal to the object to be tested;

[0032] The photoelectric conversion device is used to convert the received first chaotic light signal and the second chaotic light signal into a first electrical signal and a second electrical signal; the first chaotic light signal is obtained based on the chaotic light signal sent by the chaotic light generating device, and the second chaotic light signal is obtained based on the chaotic light signal reflected by the object to be measured;

[0033] The measuring device is used to determine the distance to the object to be measured based on the first electrical signal and the second electrical signal.

[0034] In some embodiments, the measurement system further comprises: a spectroscopic device;

[0035] The light splitting device is used for:

[0036] Splitting the chaotic light signal sent by the chaotic light generating device to obtain a reference light signal and at least one measurement light signal;

[0037] The reference optical signal is sent to the photoelectric conversion device, and at least one measuring optical signal is sent to the object to be measured.

[0038] In some embodiments, the photoelectric conversion device includes: a first photoelectric conversion unit and a second photoelectric conversion unit;

[0039] The first photoelectric conversion unit is used to convert the received reference optical signal into a first electrical signal;

[0040] The second photoelectric conversion unit is used to convert the received measurement light signal reflected by the object to be measured into a second electrical signal.

[0041] In some embodiments, the measuring device is specifically used for:

[0042] Processing the first electrical signal and the second electrical signal to determine a cross-correlation function between the first electrical signal and the second electrical signal;

[0043] The distance to the object to be detected is determined according to the cross-correlation function.

[0044] In some embodiments, the first chaotic light signal is a chaotic light signal sent by the chaotic light generating device, and the second chaotic light signal is a first chaotic light signal reflected by the object to be detected.

[0045] In some embodiments, the measuring device is specifically used for:

[0046] Processing the first electrical signal and the second electrical signal to determine an autocorrelation function of the first electrical signal and the second electrical signal;

[0047] The distance to the object to be detected is determined according to the autocorrelation function.

[0048] In some embodiments, the measuring device is further used to:

[0049] The vibration amplitude of the object to be measured is determined according to at least two distances from the object to be measured.

[0050] In a third aspect, an embodiment of the present application provides a measurement method, applied to the measurement system according to any one of the second aspects, the method comprising:

[0051] The chaotic light generating device sends a chaotic light signal to the object to be measured;

[0052] The photoelectric conversion device converts the received first chaotic light signal and the second chaotic light signal into a first electrical signal and a second electrical signal; the first chaotic light signal is obtained based on the chaotic light signal sent by the chaotic light generating device, and the second chaotic light signal is obtained based on the chaotic light signal reflected by the object to be measured;

[0053] The measuring device determines the distance to the object to be measured based on the first electrical signal and the second electrical signal.

[0054] In some embodiments, the method further comprises:

[0055] The measuring device determines the vibration amplitude of the object to be measured according to at least two distances from the object to be measured.

[0056] The chaotic light generating device, measuring system and measuring method provided by the embodiment of the present application include a laser generator; the laser generator is used to: when emitting a first laser signal, if a second laser signal is received, enter a chaotic state; and emit a chaotic light signal. When measuring, chaotic light is used as a measuring signal, and the chaotic light has strong anti-interference ability, high resolution, and can perform nanometer-level measurement. The object to be measured is measured, which can effectively improve the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 A schematic diagram of a chaotic light generating device provided in an embodiment of the present application Figure 1 ;

[0058] Figure 2 A schematic diagram of a chaotic light generating device provided in an embodiment of the present application Figure 2 ;

[0059] Figure 3 A schematic diagram of a chaotic light generating device provided in an embodiment of the present application Figure 3 ;

[0060] Figure 4A schematic diagram of a chaotic light generating device provided in an embodiment of the present application Figure 4 ;

[0061] Figure 5 A schematic diagram of a chaotic light generating device provided in an embodiment of the present application Figure 5 ;

[0062] Figure 6 A schematic diagram of a chaotic light generating device provided in an embodiment of the present application Figure 6 ;

[0063] Figure 7 A schematic diagram of a chaotic light generating device provided in an embodiment of the present application Figure 7 ;

[0064] Figure 8 A schematic diagram of a chaotic light generating device provided in an embodiment of the present application Figure 8 ;

[0065] Fig. 9 A time domain waveform diagram of a chaotic optical signal provided in an embodiment of the present application;

[0066] Fig.10 A structural diagram of a measurement system provided in an embodiment of the present application Figure 1 ;

[0067] Fig.11 A structural diagram of a measurement system provided in an embodiment of the present application Figure 2 ;

[0068] Fig.12 A structural diagram of a measurement system provided in an embodiment of the present application Figure 3 ;

[0069] Fig.13 A flow chart of a measurement method provided in an embodiment of the present application;

[0070] Fig.14 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0071] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution 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. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0072] In the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with substantially the same functions and effects, and do not limit their order. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit them to be different.

[0073] It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0074] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0075] Measurement is the key to ensuring product quality. By measuring key parameters, it can be determined whether the product meets the standards. By measuring the parameters of some physical phenomena, it can provide strong support for product design.

[0076] At present, the commonly used measurement method is to use a laser rangefinder to illuminate the reference object and the measured object respectively for measurement. However, with the development of technology, higher requirements are placed on the measurement accuracy. For example, the tiny vibration of the moving touch plate of an automotive relay during the attraction process has a moving distance of the order of microns. It is difficult for current measurement methods to meet such measurement accuracy.

[0077] In view of this, the embodiments of the present application provide a chaotic light generating device, a measurement system and a measurement method, which use chaotic light as a measurement signal, utilize the strong anti-interference ability and high resolution of chaotic light, and the ability to perform nanometer-level measurements, to measure the object to be measured, which can effectively improve the measurement accuracy.

[0078] The following specific embodiments are used to describe in detail the technical solution of the present application and how the technical solution of the present application solves the above technical problems. The following specific embodiments can be implemented independently or in combination with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0079] Figure 1A schematic diagram of the structure of a chaotic light generating device provided in an embodiment of the present application is shown in FIG. Figure 1 As shown, the chaotic light generating device includes a laser generator.

[0080] The laser generator is used to emit a first laser signal to the outside. When the laser generator emits the first laser signal to the outside, if it receives a second laser signal, the laser generator will enter a chaotic state due to interference from the second laser signal, thereby generating a chaotic optical signal to the outside.

[0081] In some embodiments, the laser generator may be a Fabry-Perot laser (FP laser), a vertical cavity laser (VCSEL), a distributed Bragg laser (DFB laser), a distributed mode laser (DM laser), etc. The embodiments of the present application do not limit the type of laser.

[0082] Among them, the mode number of the above-mentioned laser can be a single longitudinal mode, a single transverse mode or multiple longitudinal modes, multiple transverse modes, etc.; the wavelength of the laser can be 700nm, 1550nm, etc., and the embodiment of the present application does not limit the mode number and wavelength of the laser.

[0083] In some embodiments, Figure 2 As shown, the second laser signal may be a laser signal obtained after the first laser signal emitted by the laser generator is reflected by the object to be measured.

[0084] After receiving the second laser signal reflected by the object to be measured, the laser generator enters a chaotic state, and can emit a chaotic light signal to the object to be measured, and receive a chaotic light signal after being reflected by the object to be measured.

[0085] In some embodiments, the second laser signal may be a laser signal emitted by another laser generator. Figure 3 As shown, the chaotic light generating device may include a laser generator 1 and a laser generator 2, wherein the laser generator 1 is used to emit a first laser signal to the outside, and the laser generator 2 is used to emit a second laser signal to the laser generator 1. Under the interference of the second laser signal, the laser generator 1 enters a chaotic state and sends a chaotic light signal to the outside.

[0086] In some embodiments, the second laser signal may be a laser signal obtained by using a feedback component to split and feed back the first laser signal emitted by the laser generator.

[0087] like Figure 4As shown, the chaotic light generating device may include a laser generator and a feedback component. When the feedback component receives the first laser signal sent by the laser generator, it can split the first laser signal to obtain a second laser signal and a third laser signal. When the feedback component obtains the second laser signal and the third laser signal, it can send the second laser signal to the laser generator through the feedback loop between the laser generator to make the laser generator enter a chaotic state and send a chaotic light signal. That is, after the laser generator emits a chaotic light signal, the third laser signal that is subsequently split by the feedback component and emitted to the outside also becomes a chaotic light signal.

[0088] In some embodiments, Figure 5 As shown, the feedback component may include an optical connector and a splitter structure. The optical connector is used to send the first laser signal to the splitter structure through the first optical path therein, and the splitter structure splits the incident first laser signal to obtain a second laser signal and a third laser signal. The second laser signal is re-incident to the optical connector through the feedback loop between the splitter structure and the optical connector, and the third laser signal is emitted to the outside through the output port of the splitter structure. Among them, the splitter structure can be implemented by a splitter, for example, a reflective splitter, a projective splitter, etc., which is not limited in the embodiments of the present application.

[0089] The second laser signal re-incident to the optical connector is incident to the laser generator through the second optical path of the optical connector, so that the laser generator enters a chaotic state, thereby emitting a chaotic optical signal.

[0090] In some embodiments, the chaotic light generating device further comprises a first adjustment component, which is arranged in the feedback loop and is used to adjust the parameters of the received laser signal. Figure 6 As shown, after the splitting structure splits the first laser signal to obtain the second laser signal, the second laser signal is incident into the first adjustment component through the optical circuit between the first adjustment component, and the first adjustment component adjusts the second laser signal parameters such as intensity, polarization, and frequency (to meet the parameter requirements of the incident light required for the laser generator to enter the chaotic state), and then the second laser signal is incident into the optical connector through the feedback circuit between the optical connector, and then the second laser signal is sent to the laser generator through the second optical path in the optical connector, so that the laser generator enters the chaotic state and emits a stable chaotic optical signal. Among them, the first adjustment device can be composed of devices such as optical amplifiers, optical attenuators, gratings, and optical modulators.

[0091] Please continue to refer to Figure 6The chaotic light generating device also includes a second adjustment component, which is used to adjust the current, temperature and other parameters of the laser generator in a suitable range during the operation of the laser generator. For example, the second adjustment component can monitor the current and / or temperature of the laser generator in real time during operation through corresponding sensors, and if the current and / or temperature are no longer in the preset area, the current and / or temperature are adjusted. For example, the second adjustment component may include a power supply component and a temperature adjustment component, and when it is determined that the current of the laser generator is not in the preset current interval, the current output is reduced or increased to ensure current stability.

[0092] In some embodiments, the light splitting structure may include a first light splitter and a second light splitter. Figure 7 As shown, the optical connector transmits the first laser signal to the first spectrometer, and the first spectrometer splits the first laser signal to obtain a fourth laser signal and a fifth laser signal. Among them, the fourth laser signal is self-injected through the feedback loop of the first spectrometer itself, and the fifth laser signal is transmitted to the second spectrometer through the output port of the first spectrometer. The second spectrometer splits the input fifth laser signal to obtain a second laser signal and a third laser signal. The second laser signal is incident on the first adjustment component through the feedback loop between the second spectrometer and the first adjustment component, and the third laser signal is output to the outside through the output port of the second spectrometer. In the above scheme, the fourth laser signal after the first spectrometer splits is re-injected into the first spectrometer by self-injection, thereby introducing more time factors for the first laser signal. By introducing more time factors, the bandwidth of the chaotic light generated subsequently can be increased, thereby improving the measurement accuracy based on chaotic light.

[0093] In some embodiments, the first optical splitter further includes a ring cavity, such as Figure 8 As shown, the first beam splitter splits the first laser signal to obtain a fourth laser signal and a fifth laser signal, and the fourth laser signal is injected into the first beam splitter through the ring cavity. The fourth laser signal further introduces a time factor into the laser generator by circulating in the ring cavity, thereby increasing the bandwidth of the chaotic light generated subsequently to improve the measurement accuracy.

[0094] In some embodiments, whether the laser generator enters a chaotic state can be determined by a time domain waveform of the laser generator. Fig. 9 When the noise-like chaotic waveform shown has a large difference between the maximum and minimum values ​​and an irregular signal, it can be considered that the laser generator has entered a chaotic state.

[0095] In some embodiments, the paths for a laser generator to enter chaos mainly include dual-periodic (P2) and quasi-periodic (QP) paths. When the laser generator is observed to go from a stable state to a dual-periodic state to chaos or from a stable state to a quasi-periodic state to chaos, it can be determined that the laser generator has indeed entered a chaotic state.

[0096] In some embodiments, the Lyapunov exponent λ of the laser generator output can be calculated.

[0097]

[0098] Where x(t) is the output of the laser at time t, x(0) is the initial state of the laser output, and d represents the derivative. When the Lyapunov index is greater than 1, it means that the laser enters a chaotic state.

[0099] Optionally, the information entropy H of the laser generator output signal may be calculated.

[0100]

[0101] The embedding dimension can be selected as 3, ..., 7, and pi is the probability that the output of the laser falls into the embedding dimension subspace. If H is closer to 1, the output of the laser tends to be more chaotic.

[0102] Based on the above embodiments, the following describes how the embodiment of the present application uses the chaotic light generating device provided in the above embodiments to perform measurements.

[0103] Fig.10 A schematic diagram of a measurement system provided in an embodiment of the present application is shown in FIG. Fig.10 As shown, the measurement system includes: a chaotic light generating device, a photoelectric conversion device and a measuring device. The chaotic light generating device can be the chaotic light generating device shown in any of the above embodiments.

[0104] Please refer to Fig.10 The chaotic light generating device is used to send a chaotic light signal to the object to be measured; the photoelectric conversion device is used to convert the received first chaotic light signal and the second chaotic light signal into a first electrical signal and a second electrical signal; the first chaotic light signal is obtained based on the chaotic light signal sent by the chaotic light generating device, and the second chaotic light signal is obtained based on the chaotic light signal reflected by the object to be measured; the measuring device is used to determine the distance between the device and the object to be measured based on the first electrical signal and the second electrical signal.

[0105] The photoelectric conversion device may be a photoelectric converter with detection capability and signal conversion capability, and the measuring device may be a computing platform with data processing capability.

[0106] In some embodiments, the first chaotic light signal is a chaotic light signal sent by the chaotic light generating device to the object to be measured, and the second chaotic light signal is a chaotic light signal reflected by the object to be measured. The photoelectric conversion device is disposed between the chaotic light generating device and the object to be measured, and when the chaotic light generating device sends a chaotic light signal to the object to be measured, the photoelectric conversion device can perform signal acquisition to obtain the first chaotic light signal, and when the object to be measured returns the chaotic light signal to the chaotic light generating device, the photoelectric conversion device can perform signal acquisition to obtain the second chaotic light signal.

[0107] After the photoelectric conversion device collects the first chaotic optical signal and the second chaotic optical signal, it can convert the first chaotic optical signal and the second chaotic optical signal into a first electrical signal and a second electrical signal, and send the first electrical signal and the second electrical signal to the measuring device.

[0108] Since the first chaotic optical signal and the second chaotic optical signal are reflection-based optical signals, after the measuring device receives the corresponding first electrical signal and second electrical signal, it can calculate the autocorrelation function between the first electrical signal and the second electrical signal, and determine the distance to the object to be measured based on the autocorrelation function.

[0109] For example, the autocorrelation function R XX The following formula can be satisfied:

[0110]

[0111] Wherein, X(t) is the collected signal, and τ is the time delay between collecting the first chaotic optical signal and collecting the second chaotic optical signal.

[0112] After the computing platform obtains the autocorrelation function between the first electrical signal and the second electrical signal, the autocorrelation function can be inversely solved to determine the distance to the object to be measured. The inverse solution of the autocorrelation function can be performed using a recursive space method, a correlation function method, an average zero span method, etc., which is not limited in the embodiments of the present application.

[0113] In some embodiments, the measurement system further comprises a spectroscopic device, such as Fig.11 As shown, the spectrometer is used to split the chaotic light signal sent by the chaotic light generating device to obtain a reference light signal and at least one measurement light signal, and to send the reference light signal to the photoelectric conversion device, and to send at least one measurement light signal to the object to be measured.

[0114] The number of measurement light signals divided by the light splitting device is related to the number of objects to be measured. For example, each object to be measured can correspond to one measurement light. The photoelectric conversion device can be deployed on the optical path of the reference light signal and the optical path reflected by the object to be measured. In this solution, the first chaotic light signal is the reference light signal, and the second chaotic light signal is the chaotic light signal reflected by the object to be measured.

[0115] It should be understood that when the light splitting device performs light splitting, the intensity of each optical signal should be greater than the signal intensity threshold that can be detected by the photoelectric conversion device.

[0116] Since the first chaotic light signal and the second chaotic light signal are obtained by splitting the chaotic light signal emitted by the chaotic light generating device, there may be a large difference between the first chaotic light signal and the second chaotic light signal. Therefore, when the measuring device obtains the first electrical signal and the second electrical signal corresponding to the first chaotic light signal and the second chaotic light signal, the cross-correlation function between the first electrical signal and the second electrical signal can be calculated, and the distance to the object to be measured can be determined based on the cross-correlation function.

[0117] Exemplarily, the cross-correlation function R XY The following formula can be satisfied:

[0118]

[0119] Wherein, X(t) and Y(t) are the first electrical signal and the second electrical signal collected respectively, and τ is the time delay between collecting the first chaotic optical signal and the second chaotic optical signal.

[0120] After the computing platform obtains the cross-correlation function between the first electrical signal and the second electrical signal, the cross-correlation function can be inversely solved to determine the distance to the object to be measured. The cross-correlation function can be inversely solved by a recursive space method, a correlation function method, an average zero span method, etc., which is not limited in the embodiments of the present application.

[0121] In some embodiments, Fig.12 As shown, the photoelectric conversion device includes: a first photoelectric conversion unit and a second photoelectric conversion unit; the first photoelectric conversion unit is used to convert a received reference light signal into a first electrical signal; the second photoelectric conversion unit is used to convert a received measurement light signal reflected by the object to be measured into a second electrical signal.

[0122] The first photoelectric conversion unit is disposed on the optical path of the reference light, and the second photoelectric conversion unit is disposed on the optical path of the reflected light of the object to be measured. The first photoelectric conversion unit can send the converted first electrical signal to the measuring device, and the second photoelectric conversion unit can send the converted second electrical signal to the measuring device, so that the measuring device measures the distance based on the first electrical signal and the second electrical signal. It should be understood that in order to accurately measure the distance to the object to be measured, the bandwidth of the photoelectric conversion unit should be greater than the inverse of at least 2 times the detection distance resolution. According to the detection environment, the sensitivity of the photoelectric conversion unit should be able to meet the detection of the received optical signal and convert it into an electrical signal that can be collected by the data acquisition instrument.

[0123] In some embodiments, the measuring device can not only measure the distance to the object to be measured based on the first electrical signal and the second electrical signal, but also measure the vibration amplitude (distance) of the object to be measured.

[0124] Exemplarily, since the chaotic light generating device can continuously generate chaotic light to the object to be measured, the distance of the object to be measured will change before and after the vibration. Therefore, the reflection delay of the chaotic light signal collected by the object to be measured before and after the vibration will be inconsistent, that is, the distance between the object to be measured and the measuring device calculated based on the chaotic light signal will be inconsistent before and after the vibration. Therefore, the vibration amplitude of the object to be measured can be determined based on at least two distances from the object to be measured. For example, when two different distances from the object to be measured are measured, the difference between the two distances can be used as the vibration amplitude between the objects to be measured.

[0125] In summary, the measurement system provided in the embodiment of the present application uses chaotic signals, has strong anti-interference ability, high resolution, can perform nanometer-level measurements, adopts cross-correlation or autocorrelation functions for distance calculations, has a fast response speed, can realize real-time distance measurement, and effectively improves the measurement accuracy.

[0126] Based on the above embodiments, the embodiments of the present application also provide a measurement method.

[0127] Fig.13 A flow chart of a measurement method provided in an embodiment of the present application is applied to a measurement system as shown in any of the above embodiments, such as Fig.13 As shown, the method includes:

[0128] S1301. A chaotic light generating device sends a chaotic light signal to an object to be tested.

[0129] S1302. The photoelectric conversion device converts the received first chaotic optical signal and the second chaotic optical signal into a first electrical signal and a second electrical signal.

[0130] Wherein, the first chaotic light signal is obtained based on the chaotic light signal sent by the chaotic light generating device, and the second chaotic light signal is obtained based on the chaotic light signal reflected by the object to be measured.

[0131] S1303: The measuring device determines the distance to the object to be measured based on the first electrical signal and the second electrical signal.

[0132] In some embodiments, a spectrometer splits the chaotic light signal sent by the chaotic light generating device to obtain a reference light signal and at least one measurement light signal.

[0133] In some embodiments, the optical splitting device sends the reference optical signal to the photoelectric conversion device, and sends at least one measurement optical signal to the object to be measured.

[0134] In some embodiments, the measuring device processes the first electrical signal and the second electrical signal to determine a cross-correlation function between the first electrical signal and the second electrical signal; and determines the distance to the object to be measured based on the cross-correlation function.

[0135] In some embodiments, the measuring device processes the first electrical signal and the second electrical signal to determine an autocorrelation function of the first electrical signal and the second electrical signal; and determines the distance to the object to be measured based on the autocorrelation function.

[0136] In some embodiments, the measuring device determines the vibration amplitude of the object to be measured based on at least two distances from the object to be measured.

[0137] The specific implementation method of each step in the embodiment of the present application can refer to the specific implementation method of the corresponding components in the measurement system in the above embodiment. The principles and technical effects are similar and will not be repeated here.

[0138] The embodiment of the present application further provides an electronic device, which can be the measuring device in any of the above embodiments.

[0139] Fig.14 A schematic diagram of the structure of the electronic device 140 provided in the embodiment of the present application is shown in FIG. Fig.14 As shown, including:

[0140] Processor 1401.

[0141] The memory 1402 is used to store executable instructions of the terminal device.

[0142] Specifically, the program may include program codes, and the program codes include computer operation instructions. The memory 1402 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory.

[0143] The processor 1401 is used to execute the computer-executable instructions stored in the memory 1402 to implement the technical solution of the measurement method embodiment described in the above method embodiment.

[0144] The processor 1401 may be a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0145] Optionally, the electronic device 140 may further include a communication interface 1403, so that communication interaction can be performed with an external device through the communication interface 1403, and the external device may be, for example, a user terminal (e.g., a mobile phone, a tablet). In a specific implementation, if the communication interface 1403, the memory 1402, and the processor 1401 are implemented independently, the communication interface 1403, the memory 1402, and the processor 1401 may be interconnected through a bus and communicate with each other.

[0146] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc., but it does not mean that there is only one bus or one type of bus.

[0147] Optionally, in a specific implementation, if the communication interface 1403, the memory 1402 and the processor 1401 are integrated on a chip, the communication interface 1403, the memory 1402 and the processor 1401 can communicate through an internal interface.

[0148] A computer-readable storage medium is also provided in an embodiment of the present application, on which a computer program is stored. When the computer program is executed by a processor, the technical solution of the above-mentioned measurement method embodiment is implemented. The implementation principle and technical effect are similar and will not be repeated here.

[0149] In one possible implementation, a computer-readable medium may include a random access memory (RAM), a read-only memory (ROM), a compact disc read-only memory (CD-ROM) or other optical disk storage, a magnetic disk storage or other magnetic storage device, or any other medium that is intended to carry or store the required program code in the form of instructions or data structures and can be accessed by a computer. Moreover, any connection is appropriately referred to as a computer-readable medium. For example, if the software is transmitted from a website, server or other remote source using a coaxial cable, a fiber optic cable, a twisted pair, a digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwave are included in the definition of the medium. Disks and optical disks as used herein include optical disks, laser disks, optical disks, digital versatile disks (DVD), floppy disks and Blu-ray disks, where disks usually reproduce data magnetically, while optical disks reproduce data optically using lasers. Combinations of the above should also be included in the scope of computer-readable media.

[0150] A computer program product is also provided in an embodiment of the present application, including a computer program. When the computer program is executed by a processor, the technical solution of the above-mentioned measurement method embodiment is implemented. The implementation principle and technical effect are similar and will not be repeated here.

[0151] In the specific implementation of the above-mentioned terminal device or server, it should be understood that the processor can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. A general-purpose processor can be a microprocessor or the processor can be any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware processor, or can be executed by a combination of hardware and software modules in the processor.

[0152] Those skilled in the art will appreciate that all or part of the steps of any of the above method embodiments may be completed by hardware associated with program instructions. The aforementioned program may be stored in a computer-readable storage medium, and when the program is executed, all or part of the steps of the above method embodiments are executed.

[0153] If the technical solution of the present application is implemented in the form of software and sold or used as a product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the technical solution of the present application can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a computer program or several instructions. The computer software product enables a computer device (which can be a personal computer, a server, a network device, or a similar electronic device) to perform all or part of the steps of the method described in the embodiment of the present application.

[0154] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required by the present application.

[0155] It should be further noted that, although the various steps in the flowchart are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless there is a clear description in this article, the execution of these steps is not strictly limited in order, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowchart may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these sub-steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

[0156] It should be understood that the above-mentioned device embodiments are only illustrative, and the device of the present application can also be implemented in other ways. For example, the division of units / modules in the above-mentioned embodiments is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units, modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0157] In addition, unless otherwise specified, each functional unit / module in each embodiment of the present application may be integrated into one unit / module, each unit / module may exist physically separately, or two or more units / modules may be integrated together. The above-mentioned integrated unit / module may be implemented in the form of hardware or in the form of a software program module.

[0158] If the integrated unit / module is implemented in the form of hardware, the hardware may be a digital circuit, an analog circuit, etc. The physical implementation of the hardware structure includes but is not limited to transistors, memristors, etc. Unless otherwise specified, the processor may be any appropriate hardware processor, such as a CPU, a GPU, an FPGA, a DSP, an ASIC, etc. Unless otherwise specified, the storage unit may be any appropriate magnetic storage medium or magneto-optical storage medium, such as a resistive random access memory (RRAM), a dynamic random access memory (DRAM), a static random access memory (SRAM), an enhanced dynamic random access memory (EDRAM), a high-bandwidth memory (HBM), a hybrid memory cube (HMC), etc.

[0159] If the integrated unit / module is implemented in the form of a software program module and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a memory, including a number of instructions to enable a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the various embodiments of the present application. The aforementioned memory includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0160] In the above embodiments, the description of each embodiment has its own emphasis. For the part not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0161] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. 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 replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A chaotic light generating device, characterized in that: Including: laser generator; The laser generator is used for: In the case of emitting the first laser signal, if the second laser signal is received, a chaotic state is entered; Emit chaotic light signals.

2. The device according to claim 1, characterized in that The chaotic light generating device further comprises: a feedback component; The feedback component is used to: Splitting the first laser signal to obtain a second laser signal and a third laser signal; The second laser signal is transmitted to the laser generator, and the third laser signal is emitted to the outside.

3. The device according to claim 2, characterized in that The feedback component includes an optical connector and a light splitting structure; The optical connector is used to transmit the first laser signal to the light splitting structure; The light splitting structure is used to split the first laser signal to obtain a second laser signal and a third laser signal, transmit the second laser signal to the optical connector, and transmit the third laser signal to the outside; The optical connector is further used to transmit the second laser signal to the laser generator.

4. The device according to claim 3, characterized in that The light splitting structure comprises: a first light splitter and a second light splitter; The first optical splitter is used to split the first laser signal to obtain a fourth laser signal and a fifth laser signal, and to self-inject the fourth laser signal, and to transmit the fifth laser signal to the second optical splitter; The second optical splitter is used to split the fifth laser signal to obtain the second laser signal and the third laser signal.

5. The device according to claim 4, characterized in that The first beam splitter further comprises a ring cavity; The fourth laser signal is self-injected through the ring cavity.

6. The device according to claim 5, characterized in that The chaotic light generating device further comprises a first adjustment component; The first adjustment component is used to: receiving the second laser signal sent by the second beam splitter, and adjusting parameters of the second laser signal to preset parameters; the parameters at least include light intensity; The second laser signal after parameter adjustment is transmitted to the optical connector.

7. The device according to claim 6, characterized in that The chaotic light generating device further comprises a second adjustment component; The second adjustment component is used to: During the operation of the laser generator, monitoring the current and / or temperature of the laser generator; When the current and / or the temperature are not within the corresponding range, the current and / or the temperature are adjusted to a corresponding preset interval.

8. The device according to claim 1, characterized in that The second laser signal is a laser signal reflected by an object that receives the first laser signal.

9. A measurement system, characterized in that: The measurement system comprises: a chaotic light generating device, a photoelectric conversion device and a measuring device, wherein the chaotic light generating device is the chaotic light generating device according to any one of claims 1 to 8; The chaotic light generating device is used to send a chaotic light signal to the object to be tested; The photoelectric conversion device is used to convert the received first chaotic light signal and the second chaotic light signal into a first electrical signal and a second electrical signal; the first chaotic light signal is obtained based on the chaotic light signal sent by the chaotic light generating device, and the second chaotic light signal is obtained based on the chaotic light signal reflected by the object to be measured; The measuring device is used to determine the distance to the object to be measured based on the first electrical signal and the second electrical signal.

10. The system according to claim 9, characterized in that The measuring system further comprises: a spectroscopic device; The light splitting device is used for: Splitting the chaotic light signal sent by the chaotic light generating device to obtain a reference light signal and at least one measurement light signal; The reference optical signal is sent to the photoelectric conversion device, and at least one measuring optical signal is sent to the object to be measured.

11. The system according to claim 10, characterized in that The photoelectric conversion device comprises: a first photoelectric conversion unit and a second photoelectric conversion unit; The first photoelectric conversion unit is used to convert the received reference optical signal into a first electrical signal; The second photoelectric conversion unit is used to convert the received measurement light signal reflected by the object to be measured into a second electrical signal.

12. The system according to claim 11, characterized in that The measuring device is specifically used for: Processing the first electrical signal and the second electrical signal to determine a cross-correlation function between the first electrical signal and the second electrical signal; The distance to the object to be detected is determined according to the cross-correlation function.

13. The system according to claim 9, characterized in that The first chaotic light signal is a chaotic light signal sent by the chaotic light generating device, and the second chaotic light signal is a first chaotic light signal reflected by the object to be detected.

14. The system according to claim 13, characterized in that The measuring device is specifically used for: Processing the first electrical signal and the second electrical signal to determine an autocorrelation function of the first electrical signal and the second electrical signal; The distance to the object to be detected is determined according to the autocorrelation function.

15. The system according to claim 12 or 14, characterized in that The measuring device is also used for: The vibration amplitude of the object to be measured is determined according to at least two distances from the object to be measured.

16. A measurement method, characterized in that: Applied to the measurement system according to any one of claims 9 to 15, the method comprises: The chaotic light generating device sends a chaotic light signal to the object to be measured; The photoelectric conversion device converts the received first chaotic light signal and the second chaotic light signal into a first electrical signal and a second electrical signal; the first chaotic light signal is obtained based on the chaotic light signal sent by the chaotic light generating device, and the second chaotic light signal is obtained based on the chaotic light signal reflected by the object to be measured; The measuring device determines the distance to the object to be measured based on the first electrical signal and the second electrical signal.

17. The method according to claim 16, characterized in that The method further comprises: The measuring device determines the vibration amplitude of the object to be measured according to at least two distances from the object to be measured.

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