CN114900207A - Non-contact communication method and scanning equipment capable of realizing non-contact communication - Google Patents
Non-contact communication method and scanning equipment capable of realizing non-contact communication Download PDFInfo
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- CN114900207A CN114900207A CN202210513813.5A CN202210513813A CN114900207A CN 114900207 A CN114900207 A CN 114900207A CN 202210513813 A CN202210513813 A CN 202210513813A CN 114900207 A CN114900207 A CN 114900207A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/24—Inductive coupling
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/483—Details of pulse systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/70—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes
- H04B5/72—Near-field transmission systems, e.g. inductive or capacitive transmission systems specially adapted for specific purposes for local intradevice communication
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The application discloses a non-contact communication method and scanning equipment, relates to the field of communication, and is used for transmitting data; the first main control module adjusts the output gain of the transmitting magnet according to the data information to be transmitted so as to change the energy of the magnetic field generated by the transmitting magnet; different data in the data information to be transmitted correspond to different output gains; receiving a magnetic field through a receiving magnet, carrying out magnetoelectric conversion, and outputting a first electric signal to a second main control module; different output gains correspond to different first electrical signals; and processing and analyzing the received first electric signal through the second main control module to obtain data information to be transmitted. The method and the device carry out digital communication coding through the changed energy, realize non-contact communication, have high speed and do not generate damage in the communication process; the coil cost is low, and the communication cost is reduced.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a non-contact communication method and a scanning device capable of implementing non-contact communication.
Background
Scanning equipment such as laser radar can realize the measurement of data information to data information real-time transmission reaches the fixed device in other positions. When the scanning device performs 360 ° rotation scanning on the field of view, in order to realize real-time transmission of data information, the following three communication modes are commonly used: first, the slip ring is used to transmit data information measured during rotation, i.e. the slip contact is performed on the rotating base to realize electrical connection, so that the function of simultaneous communication during rotation can be realized. This approach is low cost, but long-term operation of the slip ring can cause wear and tear, resulting in irreversible damage and ultimately affecting communication quality. The second kind, with the help of the wireless communication module transmission that exists such as bluetooth module, wifi module, all have very high data information who requires to real-time nature and data volume, present wireless communication mode is hardly satisfied, and wifi communication receives external disturbance easily when communicating, produces data and loses, can't accomplish real-time transmission, and is with high costs. Thirdly, the transmitting end and the receiving end of the optical module are fixed on a coaxial line by utilizing optical module transmission, a sufficient non-shielding optical channel is reserved in the center, and when the scanning equipment rotates, the transmitting end and the receiving end are relatively static, so that data transmission can be realized. However, the optical module needs to occupy more central axis sizes to avoid shielding during transmission, and has a complex structure, and meanwhile, when the data volume is large, the requirement on the light emitting device of the optical module is high, which results in high cost. In addition, when the scanning device is a laser radar, the laser radar also has a laser emitting device, so that stray light can be generated in the working process, optical communication is interfered, and the error rate is high.
Therefore, how to provide a communication method that satisfies low cost, high reliability and real-time performance at the same time is a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The non-contact communication method and the scanning equipment capable of realizing non-contact communication have the characteristics of low cost, high reliability and real-time performance.
In order to solve the above technical problem, the present application provides a non-contact communication method for completing non-contact communication using a contactless transmitting magnet and a contactless receiving magnet, the method comprising:
when the first main control module acquires data information to be transmitted, the transmitting magnet is controlled to generate a magnetic field;
the first main control module adjusts the output gain of the transmitting magnet according to the data information to be transmitted so as to change the energy of the magnetic field generated by the transmitting magnet; different data in the data information to be transmitted correspond to different output gains;
receiving the magnetic field through the receiving magnet and performing magnetoelectric conversion so as to output a first electric signal to the second main control module; wherein different output gains correspond to different ones of the first electrical signals;
and processing and analyzing the received first electric signal through the second main control module to obtain the data information to be transmitted.
Optionally, before the second main control module processes and analyzes the received first electrical signal to obtain the data information to be transmitted, the method further includes:
judging whether the intensity value of the first electric signal is greater than a first preset threshold value or not through the second main control module;
if the strength value is not greater than the first preset threshold, the second master control module determines that the first electric signal is a non-effective signal;
and if the strength value is greater than the first preset threshold value, the second main control module determines that the first electric signal is an effective signal, and executes the step of processing and analyzing the received first electric signal through the second main control module to obtain the data information to be transmitted.
Optionally, when the data information to be transmitted is transmitted as binary data, the processing and analyzing the received first electrical signal by the second master control module to obtain the data information to be transmitted includes:
judging whether the intensity value of the first electric signal is greater than or equal to a second preset threshold value or not through the second main control module; the second preset threshold is greater than the first preset threshold;
if the strength value is greater than or equal to the second preset threshold value, the second main control module determines that the data transmitted by the first electric signal is first data;
if the intensity value is smaller than the second preset threshold value, the second master control module determines that the data transmitted by the first electric signal is second data;
and the second main control module determines the information of the data to be transmitted according to the first data and the second data.
Optionally, the adjusting, by the first master control module, the output gain of the transmitting magnet according to the to-be-transmitted data information includes:
and switching the compensation capacitor of the transmitting magnet according to different data in the data information to be transmitted so as to adjust the output gain of the transmitting magnet.
Optionally, before the controlling the emitting magnet to generate the magnetic field, the method further includes:
receiving a laser signal reflected by a target object through a laser receiving module, and carrying out photoelectric conversion on the laser signal to form a second electric signal;
receiving the second electric signal through a data acquisition module, and performing analog-to-digital conversion to form a digital electric signal;
and receiving the digital electric signal through the first main control module, and determining the data information to be transmitted according to the digital electric signal.
Optionally, the controlling the emitting magnet to generate the magnetic field includes:
generating a driving signal through the first master control module so as to drive the transmitting magnet to generate the magnetic field.
Optionally, the receiving magnet receives the magnetic field and performs magnetoelectric conversion to output a first electrical signal to the second main control module, and the receiving magnet includes:
receiving the magnetic field generated by the transmitting magnet through the receiving magnet and carrying out magnetoelectric conversion to form a first electric signal;
and shaping the first electric signal, and outputting the shaped first electric signal to the second main control module.
Optionally, the method further includes:
and controlling the motor to rotate through the second main control module so as to enable the laser emission module to rotate along with the motor.
The present application also provides a scanning device capable of realizing non-contact communication, including:
the first main control module is used for controlling the transmitting magnet to generate a magnetic field when data information to be transmitted is acquired; adjusting the output gain of the transmitting magnet according to the data information to be transmitted so as to change the energy of the magnetic field generated by the transmitting magnet; different data in the data information to be transmitted correspond to different output gains;
the transmitting magnet for generating the magnetic field;
the receiving magnet is used for receiving the magnetic field and performing magnetoelectric conversion so as to output a first electric signal to the second main control module; wherein the receiving magnet and the transmitting magnet are contactless;
and the second main control module is used for receiving the first electric signal, processing and analyzing the first electric signal and obtaining the data information to be transmitted.
Optionally, the method further includes:
and the motor control module is connected with the second main control module and is used for controlling the rotation of the motor.
The non-contact communication method is characterized in that non-contact communication is completed by using a non-contact transmitting magnet and a non-contact receiving magnet, and comprises the steps of controlling the transmitting magnet to generate a magnetic field when a first main control module acquires data information to be transmitted; the first main control module adjusts the output gain of the transmitting magnet according to the data information to be transmitted so as to change the energy of the magnetic field generated by the transmitting magnet; different data in the data information to be transmitted correspond to different output gains; receiving the magnetic field through the receiving magnet and performing magnetoelectric conversion so as to output a first electric signal to the second main control module; wherein different output gains correspond to different ones of the first electrical signals; and processing and analyzing the received first electric signal through the second main control module to obtain the data information to be transmitted.
Therefore, in the application, when the first main control module acquires the data information to be transmitted, the first main control module controls the transmitting magnet to generate a magnetic field, different output gains of the transmitting magnet are adjusted according to different data in the data information to be transmitted, the receiving magnet receives the magnetic field of the transmitting magnet and converts the received magnetic field into a first electric signal, and different data in the data information to be transmitted correspond to different output gains of the transmitting magnet, so that the magnetic fields received by the receiving magnets corresponding to different data are different, the first electric signals are different, namely different data in the data information to be transmitted correspond to different first electric signals, so that the second main control module obtains the data information to be transmitted according to the first electric signals, the communication process is fast, and the real-time performance of communication is guaranteed; the cost of the receiving magnet and the transmitting magnet is low, so that the cost of non-contact communication is reduced; and because the receiving magnet and the transmitting magnet are not in contact, non-contact communication is realized, no damage is generated in the communication process, and the reliability of data information to be transmitted can be ensured.
In addition, the application also provides a scanning device which has the advantages and can realize non-contact communication.
Drawings
For a clearer explanation of the embodiments or technical solutions of the prior art of the present application, the drawings needed for the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a block diagram of a scanning device capable of implementing contactless communication according to an embodiment of the present disclosure;
fig. 2 is a cross-sectional view of a scanning device capable of implementing non-contact communication according to an embodiment of the present application;
fig. 3 is a schematic cross-sectional view of a transmitting magnet and a receiving magnet according to an embodiment of the present application;
FIG. 4 is an exploded view of another transmitting magnet and receiving magnet provided by embodiments of the present application;
FIG. 5 is a schematic cross-sectional view of the transmitting magnet and the receiving magnet of FIG. 4 in combination;
fig. 6(a) and 6(b) are partial structural schematic diagrams of a transmitting magnet or a receiving magnet provided in an embodiment of the present application;
fig. 7 is a flowchart of a contactless communication method according to an embodiment of the present application;
fig. 8 is an internal schematic view of a gain adjustment module, a transmitting magnet and a receiving magnet according to an embodiment of the present disclosure;
FIG. 9 is a graph of the relationship between compensation capacitance and output gain;
fig. 10 is a flowchart of another contactless communication method according to an embodiment of the present disclosure.
Detailed Description
In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As described in the background section, at present, when non-contact communication is performed, there are problems of wear and poor communication quality when transmission is performed by means of a slip ring, and when wireless communication modules such as a bluetooth module and a wifi module are used for transmission, there are defects of being susceptible to external interference, poor real-time performance and the like, and when optical module is used for transmission, there are defects of high cost, poor communication quality and the like.
In view of the above, the present application provides a scanning device capable of implementing non-contact communication, please refer to fig. 1 and fig. 2, including:
the first main control module 1 is used for controlling the transmitting magnet 2 to generate a magnetic field when data information to be transmitted is acquired; adjusting the output gain of the transmitting magnet 2 according to the data information to be transmitted so as to change the energy of the magnetic field generated by the transmitting magnet 2; different data in the data information to be transmitted correspond to different output gains;
the transmitting magnet 2 for generating the magnetic field;
the receiving magnet 3 is used for receiving the magnetic field and performing magnetoelectric conversion so as to output a first electric signal to the second main control module 4; wherein the receiving magnet 3 and the transmitting magnet 2 are contactless;
and the second main control module 4 is configured to receive the first electrical signal, process and analyze the first electrical signal, and obtain the data information to be transmitted.
It is noted that the scanning device further comprises:
the laser emission module 5 is connected with the first main control module 1 and is used for receiving a control instruction of the first main control module 1 and emitting a controllable laser signal to the target object 12; the connection relationship between the first main control module 1 and the laser emission module 5 can be wired connection or wireless connection, and the wireless connection mode includes but is not limited to WiFi, bluetooth, 4G and 5G;
the laser receiving module 6 is used for receiving the laser signal reflected by the target object 12, performing photoelectric conversion to form a second electric signal, and sending the second electric signal to the data acquisition module 7;
the data acquisition module 7 is connected with the first main control module 1 and used for receiving the second electric signal, performing analog-to-digital conversion on the second electric signal to form a digital electric signal, and sending the digital electric signal to the first main control module 1 so that the first main control module 1 processes the digital electric signal to obtain data and information to be transmitted; the connection relationship between the first main control module 1 and the data acquisition module 7 can be wired connection or wireless connection, and the wireless connection mode includes but is not limited to WiFi, bluetooth, 4G and 5G;
the signal driving module 8 is connected with the first main control module 1 and is used for receiving the driving signal generated and sent by the first main control module 1, enhancing the voltage and current of the driving signal and driving the emission magnet 2 to generate a magnetic field; the connection relationship between the first main control module 1 and the signal driving module 8 can be wired connection or wireless connection, and the wireless connection mode includes but is not limited to WiFi, bluetooth, 4G, and 5G;
the gain adjusting module 9 is connected with the first main control module 1 and used for receiving a control instruction of the first main control module 1 and adjusting the output gain of the transmitting magnet 2 so as to change the energy of the magnetic field generated by the transmitting magnet 2; the connection relationship between the first main control module 1 and the gain adjusting module 9 may be wired connection or wireless connection, and the wireless connection mode includes but is not limited to WiFi, bluetooth, 4G, and 5G;
and the signal shaping module 10 is configured to shape the first electrical signal output by the receiving magnet 3, and output the shaped first electrical signal to the second main control module 4, where the shaped first electrical signal is a square wave signal.
The first main control module 1 includes, but is not limited to, an FPGA (Field-Programmable Gate Array), a CPLD (Complex Programmable Logic Device), and a single chip. The data acquisition module 7 includes chips such as an Analog to Digital Converter (ADC).
A coil is arranged in the cavity between the transmitting magnet and the receiving magnet, and the transmitting magnet, the receiving magnet and the coil jointly form a magnetic coupling module, and the transmitting magnet 2 and the receiving magnet 3 in the application are described below.
The transmitting magnet and the receiving magnet are coaxial, the opposite surfaces of the transmitting magnet and the receiving magnet are respectively provided with a first groove, and the coil is arranged in a cavity formed by the two first grooves. The arrangement of the transmitting magnet and the receiving magnet will be further described below.
As an embodiment, referring to fig. 3, the transmitting magnet 2 and the receiving magnet are disposed opposite to each other in the axial direction. At this time, the positional relationship between the transmitting magnet 2 and the receiving magnet is not limited in the present application. For example, the lower surface of the transmitting magnet 2 and the upper surface of the receiving magnet are oppositely arranged, wherein the lower surface of the transmitting magnet 2 is provided with an annular first groove 23, the upper surface of the receiving magnet is provided with an annular first groove 23, and the two first grooves 23 form a cavity, wherein the widths of the two first grooves 23 are equal. Or, the upper surface of the transmitting magnet 2 and the lower surface of the receiving magnet are oppositely arranged, wherein the upper surface of the transmitting magnet 2 is provided with an annular first groove 23, the lower surface of the receiving magnet is provided with an annular first groove 23, and the two first grooves 23 form a cavity, wherein the widths of the two first grooves 23 are equal. The coil is located in the cavity formed by the two first recesses 23.
The transmitting magnet 2 and the receiving magnet are the same size, and are shown in fig. 3 with the shape of the transmitting magnet 2 and the receiving magnet being circular, at this time, i.e. the diameters of the transmitting magnet 2 and the receiving magnet are equal; when the shapes of the transmitting magnet 2 and the receiving magnet are square, the respective side lengths of the transmitting magnet 2 and the receiving magnet are equal.
The transmitting magnet 2 and the receiving magnet are arranged together in a tank-like manner, so that magnetic leakage can be reduced, interference to other circuits can be reduced, and wireless transmission efficiency can be improved.
As another possible embodiment, referring to fig. 4 and 5, the transmitting magnet 2 and the receiving magnet are disposed opposite to each other in the radial direction. At this time, the positional relationship between the transmitting magnet 2 and the receiving magnet is not limited in the present application. For example, the receiving magnet is sleeved on the outer periphery of the emitting magnet 2, wherein the outer surface of the emitting magnet 2 is provided with an annular first groove 23, the inner surface of the receiving magnet is provided with an annular first groove 23, two first grooves 23 form a cavity, and the widths of the two first grooves 23 are equal. Or, the transmitting magnet 2 is sleeved on the periphery of the receiving magnet, wherein the inner surface of the transmitting magnet 2 is provided with an annular first groove 23, the outer surface of the receiving magnet is provided with an annular first groove 23, and the two first grooves 23 form a cavity.
The size of the transmitting magnet 2 is different from that of the receiving magnet in the radial direction, i.e., in the direction perpendicular to the axial direction, and fig. 4 and 5 show that the receiving magnet is fitted around the outer circumferential portion of the transmitting magnet 2, and the transmitting magnet 2 and the receiving magnet are circular in shape, and at this time, the diameter of the transmitting magnet 2 is smaller than that of the receiving magnet; when the transmitting magnet 2 and the receiving magnet are square in shape, the respective side lengths of the outer edges of the transmitting magnet 2 are smaller than the respective side lengths of the inner edges of the corresponding receiving magnets.
If an uncut magnetic ring winding mode is adopted, the process is complex, the cost is high, the first grooves 23 are formed in the transmitting magnet 2 and the receiving magnet, the winding process can be simplified, the transmitting magnet 2 and the receiving magnet can be combined into one magnetic ring to be fixed after winding is completed, the method improves the winding efficiency, ensures the magnetic coupling, and solves the defects that the uncut magnetic ring winding process is complex and the cost is high.
Furthermore, the second groove 24 for placing the outgoing line is arranged on the transmitting magnet 2 and/or the receiving magnet and used for fixing the outgoing line, and the reserved outgoing line improves the convenience of testing and debugging.
The transmitting magnet 2 and the receiving magnet may be either a single integrated magnet structure or a combined magnet structure. When the transmitting magnet 2 and the receiving magnet are a combined magnet structure, the structure formed by combining fig. 6(a) and 6(b) is either the transmitting magnet 2 or the receiving magnet.
The number of second recesses 24 provided on the transmitting magnet 2 and the receiving magnet is generally two each, and the two second recesses 24 are generally provided on the same diameter.
When the transmitting magnet 2 and the receiving magnet are disposed opposite to each other in the axial direction and the lower surface of the transmitting magnet 2 and the upper surface of the receiving magnet are disposed opposite to each other, the second recess 4 of the transmitting magnet 2 may be disposed on the lower surface of the transmitting magnet 2 and the second recess 24 of the receiving magnet may be disposed on the upper surface of the receiving magnet; when the upper surface of the transmitting magnet 2 and the lower surface of the receiving magnet are oppositely disposed, the second recess 24 of the transmitting magnet 2 may be disposed on the upper surface of the transmitting magnet 2, and the second recess 24 of the receiving magnet may be disposed on the lower surface of the receiving magnet.
When the transmitting magnet 2 and the receiving magnet are oppositely arranged in the radial direction, and the receiving magnet is sleeved on the outer periphery of the transmitting magnet 2, the second groove 24 on the transmitting magnet 2 can be arranged on the outer surface of the transmitting magnet 2, and the second groove 24 on the receiving magnet can be arranged on the inner surface of the receiving magnet; when the transmitting magnet 2 is sleeved on the outer periphery of the receiving magnet, the second groove 24 on the transmitting magnet 2 may be disposed on the inner surface of the transmitting magnet 2, and the second groove 24 on the receiving magnet may be disposed on the outer surface of the receiving magnet.
When the first main control module 1 obtains the data information to be transmitted, the transmitting magnet in the magnetic coupling module is controlled to generate a magnetic field, the receiving magnet receives the magnetic field and performs magnetoelectric conversion, and the data information to be transmitted is transmitted.
The working principle of the scanning device for non-contact communication is as follows: when the first main control module 1 receives data information to be transmitted, PWM driving waves are sent to the driving control circuit, the driving control circuit controls the on and off of the switch tube, waveforms with positive and negative directions are generated at two ends of the transmitting magnet, a magnetic flux curve in the transmitting magnet is changed, the receiving magnet induces the change of the magnetic flux curve and generates reverse current blocking the change of the magnetic flux, induced voltage is formed at two ends of a coil wound on the receiving magnet, required power supply voltage is generated after the induced voltage passes through the rectifying circuit and the filtering circuit, the signal shaping module shapes voltage signals, and the second main control module further processes and analyzes the shaped voltage signals to obtain the data information to be transmitted.
The material of the emitter magnet 2 is generally a magnetic material with high magnetic permeability, such as ferrite.
The laser emitting module 5 emits a laser signal to irradiate the target object 12, the laser signal is reflected by the target object 12 and then irradiates the laser receiving module 6, the laser receiving module 6 performs photoelectric conversion on the received laser signal to form a second electric signal, and the second electric signal is sent to the data acquisition module 7; the data acquisition module 7 performs analog-to-digital conversion on the second electric signal to form a digital electric signal; the first main control module 1 receives the digital electric signal to determine data information to be transmitted, drives the transmitting magnet 2 to generate a magnetic field through the signal driving module 8, and adjusts the output gain of the transmitting magnet 2 through the gain adjusting module 9 according to different data in the data information to be transmitted; the receiving magnet 3 receives the magnetic field of the transmitting magnet 2 and performs magnetoelectric conversion on the received magnetic field, a first electric signal is output to the signal shaping module 10, the shaped first electric signal is transmitted to the second main control module 4 by the signal shaping module 10, and the second main control module 4 determines data information to be transmitted according to the received shaped first electric signal.
Further, in an embodiment of the present application, the scanning device may further include: and the motor control module 11 is connected with the second main control module 4 and used for controlling the rotation of the motor, wherein the rotation of the motor can be controlled to be uniform rotation or non-uniform rotation.
The scanning device may be a laser radar or other device, which is not limited in this application.
When the scanning device is a laser radar, the cross-sectional schematic view of the scanning device is shown in fig. 2, and the scanning device comprises a top cover 13, a top plate assembly 14, a structural main body 15, a bearing 16, a motor stator 20, an optical window 10, a bottom plate assembly 17 and a base 18, wherein the top cover 13 is used for the final assembly part of the laser radar and has a dustproof effect, and the top cover 13 is fixed with a shell and does not rotate along with the motor; the top plate assembly 14 comprises a laser emitting module, a laser receiving module, a data acquisition module, a gain adjustment module, an emitting magnet 2 and a first main control module, and the top plate assembly 14 is fixed on the structure main body 15 through screws to form reliable connection; the structure body 15 plays a role of supporting and fixing the top plate assembly 14, and is a rotating assembly; the bearing 16 plays a supporting role and is a non-moving part; the optical window 19 is used for being matched with the laser emitting module and the laser receiving module to work and projecting and cutting off light waves; the bottom plate assembly 17 comprises a receiving magnet 3, a second main control module and a motor control module, and the bottom plate assembly 17 is fixed on the base 18 through screws to form reliable connection; and a base 18 for placing all the above components and serving as a lower cover of the laser radar.
The present application also provides a non-contact communication method, which uses a contactless transmitting magnet and a contactless receiving magnet to complete non-contact communication, please refer to fig. 7, which includes:
step S101: and when the first main control module acquires the data information to be transmitted, the transmitting magnet is controlled to generate a magnetic field.
The data in the data information to be transmitted is digital, that is, the data information to be transmitted is information expressed by the binary data. The type of the binary data is not limited in this application, and may be, for example, binary data, octal data, decimal data, or the like.
The driving frequency of the magnetic field generated by the transmitting magnet is unchanged, the driving frequency can be the frequency required by communication, frequency multiplication interference caused by other modulation modes can be avoided, external interference is small, and a detection circuit is easy to realize.
As an embodiment, the controlling the emission magnet to generate the magnetic field includes:
generating a driving signal through the first master control module so as to drive the transmitting magnet to generate the magnetic field.
The first main control module sends the generated driving signal to the signal driving module, and the signal driving module drives the transmitting magnet to generate a magnetic field.
Step S102: the first main control module adjusts the output gain of the transmitting magnet according to the data information to be transmitted so as to change the energy of the magnetic field generated by the transmitting magnet; wherein, different data in the data information to be transmitted correspond to different output gains.
The data information to be transmitted comprises a plurality of data, and different data correspond to different output gains. The output gain of the transmitting magnet may be adjusted by switching the capacitance of the transmitting magnet, and the manner of switching the capacitance to adjust the output gain of the transmitting magnet is not limited in this application, for example, as an implementable manner, the adjusting of the output gain of the transmitting magnet by the first main control module according to the to-be-transmitted data information includes:
and switching the compensation capacitor of the transmitting magnet according to different data in the data information to be transmitted so as to adjust the output gain of the transmitting magnet.
The first master control module can send a switching instruction to the gain adjusting module according to data in the data information to be transmitted, and the gain adjusting module switches the compensation capacitor of the transmitting magnet according to the switching instruction so as to adjust the output gain.
The transmitting magnet and the receiving magnet work in a resonance state to generate a stable electromagnetic field to realize electromagnetic conversion. The following explains the adjustment process of the output gain by taking two compensation capacitors in the gain adjustment module as an example. Referring to the internal schematic diagram of the gain adjustment module 9, the transmitting magnet 2 and the receiving magnet 3 shown in fig. 8, C1 and C2 are compensation capacitors of the transmitting magnet L1, and C3 is a compensation capacitor of the receiving magnet L2.
According to the resonant parameter formula of the LC circuit:
wherein F is the resonant frequency, C is the capacitance, and L is the inductance.
As can be seen from equation (1), when L is constant, there is an optimum matching of the capacitance C, and the output gain of the transmitting magnet and the receiving gain of the receiving magnet reach the highest value. Under the condition that the driving frequency is not changed, the matching capacitance is changed to directly influence the coil gain, as shown in fig. 9, when the driving frequency is F1, and when the gain adjusting module is switched to the compensation capacitance C1, the transmitting magnet L1 and the compensation capacitance C1 are at the optimal resonance point, and the output gain is V1. When the gain adjustment module is switched to the compensation capacitor C2, the resonant frequency with the best resonance will shift as shown by the dashed waveform in fig. 9, but the output gain of the transmitting magnet will be greatly reduced due to the constant driving frequency, and the output gain is V2. Therefore, the output gain of the transmitting magnet can be changed by switching the compensation capacitor of the gain adjusting module.
Step S103: receiving the magnetic field through the receiving magnet and performing magnetoelectric conversion so as to output a first electric signal to the second main control module; wherein different output gains correspond to different ones of the first electrical signals.
The type of the first electrical signal is not limited in this application, and for example, the first electrical signal may be a voltage, a current, or the like.
Different data correspond the different output gain of emission magnet in the data information that awaits transmission in this application, and the magnetic field that the receiving magnet received is different according to the output gain of emission magnet, and consequently just also different by the intensity value of the first electric signal of receiving magnet's magnetic field conversion, also promptly, the different output gain of emission magnet corresponds different first electric signal.
Step S104: and processing and analyzing the received first electric signal through the second main control module to obtain the data information to be transmitted.
Energy transmission is realized between the transmitting magnet and the receiving magnet based on an LC resonance principle, energy conversion of the transmitting magnet is realized through gain adjustment, energy received at the receiving magnet is also changed, digital communication coding is carried out through the changed energy, and non-contact communication is realized.
Because the data in the data information to be transmitted is transmitted to the receiving magnet through the transmitting magnet with different output gains, the first electric signals corresponding to different data are different, and then the data information to be transmitted can be obtained through the first electric signals, and the distance information and the strength information of the target object can be obtained.
Because the data in the data information to be transmitted is transmitted to the receiving magnet through the transmitting magnet with different output gains, the first electric signals corresponding to different data are different, and then the data information to be transmitted can be obtained through the first electric signals, and the distance information and the strength information of the target object can be obtained.
On the basis of the foregoing embodiment, in an embodiment of the present application, before the second master control module performs processing analysis on the received first electrical signal to obtain the to-be-transmitted data information, the method further includes:
judging whether the intensity value of the first electric signal is greater than a first preset threshold value or not through the second main control module;
if the strength value is not greater than the first preset threshold, the second master control module determines that the first electric signal is a non-effective signal;
and if the strength value is greater than the first preset threshold value, the second main control module determines that the first electric signal is an effective signal, and executes the step of processing and analyzing the received first electric signal through the second main control module to obtain the data information to be transmitted.
When the first electric signal is a voltage signal, the strength value of the first electric signal is a voltage value; when the first electrical signal is a current signal, the intensity value of the first electrical signal is the current value. The first preset threshold is not limited in this application, as the case may be.
When the intensity value of the first electric signal is not larger than a first preset threshold value, the first electric signal is indicated to be a non-effective signal, data in the data information to be transmitted do not need to be determined according to the first electric signal, when the intensity value of the first electric signal is larger than the first preset threshold value, the first electric signal is an effective signal, the data information to be transmitted is obtained according to the first electric signal, and the accuracy of data information transmission to be transmitted is improved by comparing the intensity value with the first preset threshold value.
Further, on the basis of the foregoing embodiment, in an embodiment of the application, when the to-be-transmitted data information is transmitted as binary data, the processing and analyzing, by the second master control module, the received first electrical signal, and obtaining the to-be-transmitted data information includes:
judging whether the intensity value of the first electric signal is greater than or equal to a second preset threshold value or not through the second main control module; the second preset threshold is greater than the first preset threshold;
if the strength value is greater than or equal to the second preset threshold value, the second main control module determines that the data transmitted by the first electric signal is first data;
if the intensity value is smaller than the second preset threshold value, the second master control module determines that the data transmitted by the first electric signal is second data;
and the second master control module determines the data information to be transmitted according to the first data and the second data.
The second preset threshold is not limited in this application, as the case may be.
When the data information to be transmitted is transmitted in binary data, the data in the data information to be transmitted is '0' or '1', so that one of the first data and the second data is '0' and the other is '1', all the first data and the second data are combined in sequence to form the data information to be transmitted, and effective communication is completed.
On the basis of any one of the above embodiments, in an embodiment of the present application, before the controlling the emitting magnet to generate the magnetic field, the method further includes:
receiving a laser signal reflected by a target object through a laser receiving module, and carrying out photoelectric conversion on the laser signal to form a second electric signal;
receiving the second electric signal through a data acquisition module, and performing analog-to-digital conversion to form a digital electric signal;
and receiving the digital electric signal through the first main control module, and determining the data information to be transmitted according to the digital electric signal.
The first master control module controls the laser emitting module to emit laser signals, the laser emitting module irradiates a target object and then reflects the laser signals, the laser receiving module receives the reflected laser signals, performs photoelectric conversion on the reflected laser signals and sends second electric signals formed by conversion to the data acquisition module; the data acquisition module can be the analog-to-digital conversion module, sends the digital signal of telecommunication after the conversion to first master control module.
On the basis of any one of the above embodiments, in an embodiment of the present application, receiving the magnetic field by the receiving magnet and performing magnetoelectric conversion to output a first electrical signal to the second main control module includes:
receiving the magnetic field generated by the transmitting magnet through the receiving magnet and carrying out magnetoelectric conversion to form a first electric signal;
and shaping the first electric signal, and outputting the shaped first electric signal to the second main control module.
The receiving magnet sends the formed first electric signal to the signal shaping module, the signal shaping module shapes, the shaped first electric signal is a square wave signal which can be identified by the second main control module, the first electric signal is shaped, and the second main control module can conveniently obtain data information to be transmitted.
On the basis of any one of the above embodiments, in an embodiment of the present application, the method further includes: and controlling the motor to rotate through the second main control module so as to enable the laser emission module to rotate along with the motor.
The second main control module can send a driving instruction to the motor control module, and the motor control module controls the motor to rotate so that the laser emission module rotates along with the motor. The control motor can rotate at a constant speed or rotate at a non-constant speed.
In this embodiment, the laser emission module rotates along with the rotation of the motor, and the emission direction of the laser signal changes, so that the distance information and the intensity information of the target object without a position can be measured.
The communication method in the present application is explained in a specific case, please refer to fig. 10.
Step S201, a first main control module controls a laser emission module to emit laser signals, and the laser signals are reflected when meeting a target object;
step S202, the laser receiving module receives the reflected laser signal, performs photoelectric conversion on the laser signal to form a second electric signal, and sends the second electric signal to the data acquisition module;
step S203, the data acquisition module performs analog-to-digital conversion on the received second electric signal to form a digital electric signal, and sends the digital electric signal to the first main control module;
step S204, the first main control module obtains binary data information to be transmitted according to the digital electric signals and generates communication signals for driving the transmitting magnet to the signal driving module so as to enable the transmitting magnet to generate a magnetic field;
step S205, the first main control module sends a switching instruction to the gain adjusting module according to '0' and '1' in the data information to be transmitted, and the gain adjusting module switches the compensation capacitor of the transmitting magnet, so that the transmitting magnet outputs different output gains;
step S206, the receiving magnet receives the magnetic field energy of the transmitting magnet, converts the magnetic field signal into a first electric signal and sends the first electric signal to the signal shaping module;
step S207, shaping the first electric signal by the signal shaping module to generate a processable square wave signal (shaped first electric signal), and sending the shaped first electric signal to the second main control module;
step S208, the second main control module determines the voltage value of the shaped first electric signal, judges whether the voltage value is greater than a first preset threshold value, and judges that the shaped first electric signal is an invalid signal if the voltage value is not greater than the first preset threshold value; if the value is larger than the first preset threshold value, executing the step 9;
step S209, the second main control module determines whether the voltage value is greater than or equal to a second preset threshold, if so, determines that binary data transmitted by the shaped first electrical signal is "1", and if the voltage value is less than the second preset threshold, determines that binary data transmitted by the shaped first electrical signal is "0";
and step S210, arranging the obtained binary data in sequence by the second main control module to obtain the data information to be transmitted.
The embodiments are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same or similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The non-contact communication method and the scanning device capable of realizing non-contact communication provided by the application are described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
Claims (10)
1. A contactless communication method, wherein contactless transmission and reception magnets are used to perform contactless communication, the method comprising:
when the first main control module acquires data information to be transmitted, the transmitting magnet is controlled to generate a magnetic field;
the first main control module adjusts the output gain of the transmitting magnet according to the data information to be transmitted so as to change the energy of the magnetic field generated by the transmitting magnet; different data in the data information to be transmitted correspond to different output gains;
receiving the magnetic field through the receiving magnet and performing magnetoelectric conversion so as to output a first electric signal to the second main control module; wherein different output gains correspond to different ones of the first electrical signals;
and processing and analyzing the received first electric signal through the second main control module to obtain the data information to be transmitted.
2. The non-contact communication method according to claim 1, wherein before the second master control module processes and analyzes the received first electrical signal to obtain the data information to be transmitted, the method further comprises:
judging whether the intensity value of the first electric signal is greater than a first preset threshold value or not through the second main control module;
if the strength value is not greater than the first preset threshold, the second master control module determines that the first electric signal is a non-effective signal;
and if the strength value is greater than the first preset threshold value, the second main control module determines that the first electric signal is an effective signal, and executes the step of processing and analyzing the received first electric signal through the second main control module to obtain the data information to be transmitted.
3. The non-contact communication method according to claim 2, wherein when the data information to be transmitted is transmitted as binary data, the obtaining the data information to be transmitted by processing and analyzing the received first electrical signal by the second master control module comprises:
judging whether the intensity value of the first electric signal is greater than or equal to a second preset threshold value or not through the second main control module; the second preset threshold is greater than the first preset threshold;
if the strength value is greater than or equal to the second preset threshold value, the second main control module determines that the data transmitted by the first electric signal is first data;
if the intensity value is smaller than the second preset threshold value, the second master control module determines that the data transmitted by the first electric signal is second data;
and the second master control module determines the data information to be transmitted according to the first data and the second data.
4. The contactless communication method of claim 1, wherein the first master control module adjusting the output gain of the transmitting magnet according to the data information to be transmitted comprises:
and the first main control module switches the compensation capacitor of the transmitting magnet according to different data in the data information to be transmitted so as to adjust the output gain of the transmitting magnet.
5. The contactless communication method of claim 1, further comprising, prior to said controlling said transmitting magnet to generate a magnetic field:
receiving a laser signal reflected by a target object through a laser receiving module, and carrying out photoelectric conversion on the laser signal to form a second electric signal;
receiving the second electric signal through a data acquisition module, and performing analog-to-digital conversion to form a digital electric signal;
and receiving the digital electric signal through the first main control module, and determining the data information to be transmitted according to the digital electric signal.
6. The contactless communication method of claim 1, wherein the controlling the transmitting magnet to generate the magnetic field comprises:
generating a driving signal through the first master control module so as to drive the transmitting magnet to generate the magnetic field.
7. The contactless communication method according to any one of claims 1 to 6, wherein the receiving the magnetic field by the receiving magnet and performing magneto-electric conversion to output a first electrical signal to a second main control module includes:
receiving the magnetic field generated by the transmitting magnet through the receiving magnet and carrying out magnetoelectric conversion to form a first electric signal;
and shaping the first electric signal, and outputting the shaped first electric signal to the second main control module.
8. The contactless communication method according to claim 7, further comprising:
and controlling the motor to rotate through the second main control module so as to enable the laser emission module to rotate along with the motor.
9. A scanning device capable of non-contact communication, comprising:
the first main control module is used for controlling the transmitting magnet to generate a magnetic field when data information to be transmitted is acquired; adjusting the output gain of the transmitting magnet according to the data information to be transmitted so as to change the energy of a magnetic field generated by the transmitting magnet; different data in the data information to be transmitted correspond to different output gains;
the transmitting magnet for generating the magnetic field;
the receiving magnet is used for receiving the magnetic field and performing magnetoelectric conversion so as to output a first electric signal to the second main control module; wherein the receiving magnet and the transmitting magnet are contactless;
and the second main control module is used for receiving the first electric signal, processing and analyzing the first electric signal and obtaining the data information to be transmitted.
10. The scanning device of claim 9, further comprising:
and the motor control module is connected with the second main control module and is used for controlling the rotation of the motor.
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