CN113572276B - System and method for wireless charging alignment and information transmission based on coil structure - Google Patents
System and method for wireless charging alignment and information transmission based on coil structure Download PDFInfo
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- CN113572276B CN113572276B CN202110880151.0A CN202110880151A CN113572276B CN 113572276 B CN113572276 B CN 113572276B CN 202110880151 A CN202110880151 A CN 202110880151A CN 113572276 B CN113572276 B CN 113572276B
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/005—Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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Abstract
The invention belongs to the technical field of wireless power supply, and particularly relates to a system and a method for wireless charging alignment and information transmission based on a coil structure. The surface of a receiving coil is made into a structure with a plurality of stand columns, the receiving coil is arranged on receiving end equipment, a laser scanning range radar is arranged on a transmitting coil, the stand columns on the receiving coil are arranged facing the laser scanning range radar, equipment to be charged carrying the receiving equipment enters a charging area, and the receiving coil on the receiving equipment is paired with a transmitting coil of power generation equipment through stand column information on the receiving coil, so that alignment and information transmission are realized; the laser scanning range radar on the transmitting equipment detects the coded information consisting of the column information on the receiving coil, namely the column information, and acquires the identity of the receiving coil, namely the unique coded address or the unique identity information; the transmitting device actively calls the receiving device, establishes connection with the receiving device, and carries out mutual data transmission.
Description
Technical Field
The invention belongs to the technical field of wireless power supply, and particularly relates to a system and a method for wireless charging alignment and information transmission based on a coil structure.
Background
With the rising and gradual development of the wireless power supply industry, wireless power supply is becoming accepted and provides much convenience, and more particularly, the wireless power supply is used from industry to living field.
However, there are some problems in wireless power supply at present, such as in the debugging, maintenance and use of surface cables, the power transmitting cable belongs to a cable erected in a suspended state, and is similar to a power supply system in a city. When the time is increased, the cable erected between the two brackets can sag due to the action of gravity, which has influence on debugging, overhauling and use.
When the equipment moves on the upper surface during product debugging or maintenance, such as power pickup equipment, debugging or maintenance personnel need to follow the equipment to move below; and to be carefully heard with the ear, if a fizzing sound is made, indicating that the power transmitting cable rubs against the power pick-up device, the cable needs to be adjusted. Such commissioning or maintenance efficiency is conceivable to be low, manually based on the sound discrimination of the equipment situation. In addition, sometimes the factory environment is noisy, the hiss sound cannot be heard at all, interference is formed, and certain difficulty is brought to maintenance.
In addition, cable deformation is a slow process, such as being difficult to find without scrutiny, but is late when the cable begins to wear and deform. Sometimes it may scratch the power pick-up device, resulting in device damage. Therefore, the rail state can be detected in real time, a dangerous seedling head appears, and the warning is immediately given to prevent accidents.
Disclosure of Invention
Aiming at the problems caused by the cable deformation in the prior art in debugging or maintenance, the invention provides a method and a system for wireless charging alignment and information transmission based on a coil structure.
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the invention provides a system for wireless charging alignment and information transmission based on a coil structure, which is characterized in that:
the receiving coil is provided with a plurality of upright posts which are arranged in an m-n matrix, and the heights of the upright posts in the m-n matrix are the same, the widths are the same, and the lengths are different;
in the column direction, the lengths of a plurality of columns of the ith column are gradually increased from the 1 st row to the m th row, wherein m is an integer greater than or equal to 2, the lengths of a plurality of columns of other columns except the ith column are the same, i is more than or equal to 1 and less than or equal to n, i and n are integers, the lengths of columns of the 1 st column to the n th column are different, and the intervals between adjacent columns are unequal;
in the row direction, the spacing between adjacent rows is the same, the lengths of the columns in the ith column in each row of columns are different, and the lengths of the columns in each row of columns are different.
Further, the receiving coil is installed on receiving terminal equipment, one face of the receiving coil provided with a plurality of stand columns is located directly over the transmitting coil, the transmitting coil is provided with a laser scanning range radar, the stand columns on the receiving coil are installed towards the laser scanning range radar, and the laser scanning range radar obtains stand column information on the receiving coil.
Further, the column information on the receiving coil comprises a data head, line number information, a receiving coil self-code and a data tail;
the data head is the beginning of a certain row of column information, the length of the data head accounts for 10% of the whole row of information, wherein 5% of the data head comprises the column length, and the remaining 5% is the column-free length;
the line number information is formed by 5-bit column widths, wherein the first 4-bit information is formed by binary codes, the maximum is 16, and the last column width is a stop bit of the line number information;
the receiving coil self-code is information representing the unique identity of receiving end equipment and is used for pairing of an integral wireless charging system, the receiving coil self-code consists of 8 bits of data, each bit of data occupies the length of 3 upright posts, wherein one upright post is placed on the length of a first upright post, and whether the upright post is contained or not is determined according to the data on the length of a second upright post; if the bit is 1, there is a column; if the bit is 0, there is no column; the third column has no column in length and is used as a stop symbol;
the data tail represents the end of this line of information, which is started after the end of the coding by the last receiving coil itself, which information all contains the uprights.
Further, in each row of information, the row number information and the transmitting coil encoding itself are repeatedly cycled until a complete cycle is eventually not placed and ended.
Further, the name or number of each row is defined by row number information, which is dependent on the column of the ith column in the row.
The invention provides a method for wireless charging alignment and information transmission based on a coil structure, which is characterized by comprising the following steps:
the equipment to be charged, which is loaded with the receiving equipment, enters a charging area, and a receiving coil on the receiving equipment is paired with a transmitting coil of the generating equipment through column information on the receiving coil, so that alignment and information transmission are realized;
the laser scanning range radar on the transmitting equipment detects the coded information consisting of the column information on the receiving coil, namely the column information, and acquires the identity of the receiving coil, namely the unique coded address or the unique identity information;
the transmitting device actively calls the receiving device, establishes connection with the receiving device, and carries out mutual data transmission.
Further, the alignment of the transmitting coil and the receiving coil is specifically:
after the laser scanning range radar obtains the information of the upright post, analyzing a data head and a data tail, wherein the end of the data head is one boundary of the receiving coil, the end of the data tail is the other boundary of the receiving coil, acquiring the length of the whole receiving coil, and converting the receiving coil into a straight line with a fixed length to form a detection straight line;
and under the alignment state of the receiving coil and the transmitting coil, the laser scanning range radar is used for detecting the position state of the straight line and the standard straight line, and judging whether the receiving coil of the equipment to be charged is aligned with the transmitting coil of the power generation equipment.
Further, if the detection line gradually approaches the standard line and the detection line overlap, the receiving coil is aligned with the transmitting coil;
if the detection line gradually deviates from the standard line, the receiving coil is not aligned with the transmitting coil.
Further, the offset of the receiving coil is judged by using the line number information,
when the laser scanning range radar scans a certain line, the line numbers of the line are decoded, the line numbers are arranged in sequence, and the moving distance of the receiving coil is obtained according to the line numbers and the line number position of the last line.
Compared with the prior art, the invention has the advantages that:
the cable position can be detected in real time, further deterioration of accidents caused by sudden conditions can be prevented, for example, automatic shutdown processing is immediately performed after cable sagging is detected, and further loss is prevented.
The system is convenient to debug, an operator needs to walk with the equipment before, and judges the fault point by listening to the sound and looking at the position.
The maintenance is convenient, the fault position point is detected, the data is uploaded, and the accurate positioning can be realized. Maintenance personnel directly maintain the whole track without going through the whole track, and the method is time-consuming and labor-consuming and easy to miss fault points.
The device can independently run and can carry an alarm, and the device can not be matched with a third party system, so that the use flexibility of the device is improved.
Drawings
Fig. 1 is a schematic diagram of a prior art receiving coil.
Fig. 2 is a schematic structural diagram of a receiving coil of the present application.
Fig. 3 is a schematic state diagram of the device to be charged in the present application when the device just enters the alignment state.
Fig. 4 is a state diagram of the device to be charged in the present application in the alignment state.
Fig. 5 is a schematic diagram of a laser scanning path of the receiving coil and transmitting coil in alignment state.
Fig. 6 is an enlarged partial schematic view of fig. 5 of the present application.
Fig. 7 is a diagram of post code information on a receiving coil of the present application.
Fig. 8 shows the relative positions of two straight lines when the automobile is in the aligned state in the embodiment.
Fig. 9 shows the relative positions of two straight lines when the automobile is put in storage and the transverse offset occurs in the embodiment.
Fig. 10 shows the relative positions of two straight lines when driving a car askew from the transmitting coil in an embodiment.
Fig. 11 is a schematic diagram of detection of longitudinal displacement of an automobile in an embodiment.
Marking: 1. receiving coil, 2, output line, 3, 1 st row stand, 4, m row stand, 5, 1 st column stand, 6, i th column stand, 7, n th column stand, 8, receiving device, 9, battery, 10, transmitting coil, 11, transmitting device, 12, laser scanning range radar, 13, scanned laser beam, 14, stand, 15, scanned laser track, 16, equipment to be charged, 17, data head, 18, line number information, 19, receiving coil self coding, 20, repetitive cycle line number information and receiving coil self coding information, 21, data tail, 22, standard straight line, 23, detecting straight line.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings.
Example 1
In this embodiment, the two parts are mainly composed: one is a modified receiving coil, and the other is a laser scanning range radar.
As shown in fig. 1, a general wireless power receiving coil has a flat square structure with a smooth surface, but in this embodiment, in order to achieve the effects of alignment and information transmission, the surface of the wireless power receiving coil in the prior art is made into a structure with a plurality of posts, as shown in fig. 2.
The structure of the plurality of stand columns is located on the coil body, the stand columns are in protruding states on the receiving coil, the stand columns are identical in height and width and different in length, in this embodiment, in combination with fig. 2, the opposite direction is the length direction, the direction perpendicular to the coil body is the height direction, and the direction perpendicular to the length and the height is the width direction. The columns are arranged according to a certain rule, specifically, the columns are classified according to rows and columns to form a plurality of columns which are arranged in an m-by-n matrix, and m and n are integers which are larger than or equal to 1.
For convenience of explanation, in fig. 2, the opposite longitudinal direction is a row, and from front to back, the 1 st row and the 2 nd row … … m-th row are sequentially, and the direction perpendicular to the longitudinal direction is a column, and from left to right, the 1 st column and the 2 nd column … … n-th column are sequentially.
The spacing between adjacent columns is not uniform in the column direction and may vary due to coding concerns. In this embodiment, one column is designed separately, which is used to indicate row number information, for example, column 2 is designed separately, in column 2 of this separate design, the length of each column is different, the length increases from column 1 to column m, the length of column 1 is shortest, and the length of column m is longest. In the remaining other columns, all columns inside the column have the same length, that is to say in this embodiment the column lengths are different except for column 2, column 1, column 3, column … …, column n, all columns in each column have the same length, but the column lengths of the different columns are different from each other, see in particular fig. 2.
The spacing between adjacent rows is the same in the row direction, as are the widths and heights of all the columns of each row. The name or number of each row is defined by "row number information", i.e. according to column 2, and each row is unique and does not conflict with other rows. For example, in fig. 2, the column length of the "line number information" in the first row is shorter, that is, the column length of the 1 st row and the 2 nd column is shorter, and the column length of the "line number information" in the last row is longer, that is, the column length of the 2 nd column in the m-th row is longer.
In practical application of the system, the wireless power supply receiving coil can be installed on the equipment to be charged in a tilting mode, namely, all the stand columns face the transmitting coil, and the laser scanning range radar is located on the transmitting coil, so that all the stand columns face the laser scanning range radar.
The laser scanning range radar in the embodiment belongs to a scanning type sensor adopting a non-contact laser range finding technology, can acquire high-precision contour information of the environment in real time, is an essential core sensor in the fields of robot positioning navigation, space environment mapping, security and security, and the like, and is based on the principle that a motor drives a turntable, and a laser transmitter and a laser receiver are arranged on the rotating turntable. The laser transmitter uses a narrow laser beam as a signal source and emits the laser beam outwards. When the punctiform pulse laser strikes the wall surface, trees and roads, scattering is caused, and a part of light waves are reflected to a receiver of the laser radar. The distance from the emitter to the target can be obtained by calculation according to the laser ranging principle. Along with the rotation of the turntable, the device can connect punctiform lasers into a line segment and measure the distance between the whole line segment and the laser transmitter, so the laser scanning range radar of the type can only scan the line segment to give a two-dimensional scanning result, but can not give three-dimensional data. The laser scanning range radar and the laser range principle are all in the prior art, and the mechanical structure, the circuit structure and the software range algorithm of the laser scanning range radar belong to mature products, so the laser scanning range radar is not unfolded here, and the laser scanning range radar can refer to products of the national manufacturer's Si lan technology as understanding and are not described in detail.
In this embodiment, the laser scanning range radar is aimed at a row of posts on the wireless power receiving coil. The distance and offset of the receiving coil relative to the radar can be obtained, and the code information represented by the row of columns can be informed to the laser scanning range radar.
As shown in fig. 3 and fig. 4, an automobile is selected as an example of the device to be charged. Fig. 3 shows the laser radar scanning position when the vehicle has just entered the alignment state, and fig. 4 shows the laser radar scanning position when the vehicle alignment is completed.
As shown in fig. 3, when the automobile just enters the alignment state, the laser scanning track of the laser scanning range radar installed beside the transmitting coil aims at the column 3 of the 1 st row in the receiving coil. As shown in fig. 4, after the alignment of the automobile is completed, the laser scanning track of the laser scanning range radar aims at the last 1 row of columns in the receiving coil, namely the m-th column 4.
Fig. 5 is an enlarged view showing the relative positions and interactions between the lidar, transmitter coil, receiver coil, path of the laser scan trajectory, row 1 stud 3.
When the laser scanning range radar scans a column of row 1, specific range data, such as 1 meter, is identified. No upright posts exist between adjacent upright post spaces, and when the upright posts are not scanned, no specific distance data exists or the distance data is larger.
Therefore, the laser scanning range radar can judge whether a column is scanned or not by scanning the distance data of the encountered obstacle, and calculate the length of the column according to the length of the distance data. The laser scanning range radar is a basic function of the laser scanning range radar, is consistent with the existing robot navigation, and is the prior art of laser scanning range radar detection in terms of distance and length calculation, and will not be described in detail.
For simplicity of illustration, fig. 5 is a partial enlarged detail and illustrates how the receiving coil transmits its own information to the lidar.
As shown in fig. 6, after the laser scanning ranging radar identifies each upright, the own algorithm is used to restore the upright ordering of the whole coil. The laser scanning range radar emits laser beams to judge whether the receiving coil is provided with the stand column or not, the laser radar emits the laser beams, the laser beams are judged from the 1 st stand column of the row, when the stand column blocks the laser beams, relatively close distance data are generated, when the stand column does not block the laser beams, the laser beams emit far, no specific distance data are given, or the given distance data are larger, the laser beams sequentially scan the 1 st to n th stand columns of the row, and information of all the stand columns on the row is obtained.
The column information of the other rows is also obtained in this way, and the information of all columns on the receiving coil is obtained by the laser scanning range radar.
Therefore, the laser scanning range radar is equivalent to indirectly acquiring the information of the upright post on the receiving coil, and only the upright post information is not enough, and the meaning of the upright post information on the receiving coil can be restored only by decoding the upright post information.
The column information received on the receiving coil is decomposed into four types, namely a data head 17, line number information 18, a receiving coil self-code 19 and a data tail 21, and the four types are respectively described.
The data head 17 is the beginning of the line information, the length of the data head is 10% of the whole line information, and 5% of the data head contains the column length, as shown in a 1; the remaining 5% is the pillar free length, as indicated by a 2.
The line number information 18 informs the laser scanning range radar of what number of columns have been scanned. The line number information is formed by adopting the width of a 5-bit column, wherein the first 4-bit information consists of binary codes, and the maximum binary codes of 16 and 16 are 10000; the last column width is the stop bit of the line number information, such as the line number information in fig. 7, and comprises 5 column widths, such as b1, wherein the column position is 1, the column position is 0, the first 4 bits of the line number information are 1011, 1011 are binary, and are converted into decimal 11, namely the 11 th line; the line number information stop bit has no vertical column here, as shown in b 2.
The information of the receiving coil's own code 19 is information representing the unique identity of the receiving end device for the paired use of the overall wireless charging system. After the transmitting device acquires the information through the laser scanning range radar, the receiving devices needing to be charged can be known, communication is further directly initiated, connection is established, and charging can be performed. The receiving coil itself code consists of 8 bits of data, while each bit of data occupies a width of 3 columns, the first width containing columns, the second width actually representing the data, and the third width having no columns as stop.
Wherein a first column width is required to accommodate a column and a second column width is determined based on the data to accommodate the column. If the bit is 1, there is a column; if the bit is 0, there is no column. The third column width has no columns and is used as a stop symbol. As shown in c2 of fig. 7, the overall data is 10100111; as shown in c1 of fig. 7, according to the fact that the widths of every 3 stand columns in fig. 7 are 1 group and 8 groups in total, the widths of the stand columns are consistent with the widths of the stand columns in the line number information, the group is marked by a vertical dotted line, and the 2 nd width of the 3 stand column widths of the 1 st group is marked as 1 if the stand column is arranged; the 2 nd width of the 2 nd group of 3 upright widths is marked as 0 if no upright exists; the 2 nd width of the 3 rd column width of the 3 rd group is provided with columns, and is marked as 1; the 2 nd width of the 4 th group of 3 upright posts is marked as 0 when no upright post exists; the 2 nd width of the 5 th group of 3 upright posts is marked as 0 when no upright post exists; the 2 nd width of the 6 th group of 3 upright posts is provided with upright posts, and is marked as 1; the 2 nd width of the 7 th group of 3 upright posts is provided with upright posts, and is marked as 1; the 2 nd width of the 8 th group of 3 upright posts is provided with upright posts, and is marked as 1; constitute the data tail 10100111.
The information of the data tail, which represents the end of the line of information, is started after the end of the coding of the last receiving coil itself, all of which contains the post, as shown by d in fig. 7, and all of the remaining positions contain the post as the data tail.
In order to prevent collisions, sludge, etc. from damaging the integrity of the information, the information of each row needs to be guaranteed with redundancy. In each row of information, the row number information 18 and the transmitting coil self-code 19 are repeatedly circulated until the end of a complete cycle is reached, and the repeated circulation of the row number information and the receiving coil self-code information 20 in fig. 7 is repeated, that is, as shown in c3 in fig. 7, and the above specific description of the code information can refer to fig. 7.
The receiving device transmits its own encoded information to the transmitting device through the external structure of the receiving coil, and the transmitting device thereby knows the object to be connected.
The embodiment only elaborates the implementation process of the scheme, and highlights that the receiving coil can send information to the outside through the appearance structure, which is also the main subject of the final requirements and protection of the present invention, and not for defining the specific details of the scheme. All of the above specific parameters, such as column height, width, length, ordering, spacing, data format, data type, number of bits, etc., will vary depending on the actual field environment, implementation, equipment resolution, processing cost, etc., as well as other specific factors. These changes in detail are all made based on the gist of the present invention and are therefore intended to be within the scope of the invention.
The connection process of the wireless power supply device is as follows, and in this embodiment, an automobile with a receiving device or a device with an AGV is used as the device to be charged:
firstly, an automobile or AGV carrying a receiving device enters a charging area, and a wireless communication module on the device can automatically join a public network section. In this case, the plurality of transmitting devices and the plurality of receiving devices are separated from each other and are not paired.
When the automobile enters one of the charging piles, the charging pile is the transmitting device, the laser scanning range radar detects the coded information formed by the upright posts on the receiving coil, namely the upright post information, and the identity of the receiving coil, namely the unique coded address or the unique identity information is 10100111, is known.
At this time, the transmitting device may actively call the receiving device in the public network and establish a connection therewith. And then starting to jump the channel, avoiding interference, and independently, safely and quickly transmitting data mutually. The fixed information such as unique code address is not only transmitted by the upright post of the receiving coil, but also dynamic information changing in real time can be transmitted to the laser radar when the vehicle is charged and aligned.
The overall principle of the transmitting coil and the receiving coil alignment is as follows:
after the information of the stand column is obtained by the laser scanning range radar, the data head and the data tail are analyzed. The end of the data head is in fact one boundary of the receiving coil, while the end of the data tail is in fact the other boundary of the receiving coil. So far, the length of the whole receiving coil is known. It is possible to deduce the length of a receiving coil if only the data head is known, since the length of the data head is 10% of the total receiving coil length according to the above criteria. Then, the receiving coil can be simplified into a straight line with a fixed length, which is called a detection straight line 23 for a moment, through sorting and operation.
In the laboratory, the receiving coil and the transmitting coil are aligned in advance, and the laser scanning range radar is placed at a proper position as a standard for alignment of the system, and a line fitted by the laser scanning range radar passing through the detecting receiving coil at this time is defined as a standard line 22. Typically, the location scanned by this "normal line" is the last row of posts of the receive coil, and the data for this "normal line" has been previously solidified into the transmitting device.
It can be seen that in practical applications, the alignment process of the transmitting coil and the receiving coil is actually a process of overlapping the "detection line" with the "standard line". When the driver drives the automobile slowly to approach the transmitting coil, the 'detection straight line' gradually approaches the 'standard straight line'. When the two are overlapped, it is representative that the driver has aligned the receiving coil with the transmitting coil.
Fig. 8 illustrates the relative positions of the two straight lines when the automobile is just brought into the aligned state.
When the vehicle is put in storage, the displacement of the detection straight line also occurs, and the displacement is only transverse, namely perpendicular to the running direction of the vehicle, so that the displacement diagram is shown in fig. 9.
Assuming that the driver is driving a car askew of the transmitting coil, the simplified rear effect is as shown in fig. 10.
The above is the case of lateral displacement and skew, and also the case of longitudinal displacement, i.e. the position of the car in the direction of travel, and this detection means uses the "line number information" mentioned before.
In each row, there is a place that is different, namely the row number. Then the line number of the line is decoded after the laser scanning range radar has scanned the line. The line numbers are ordered and are not repeated. And (3) performing back-pushing by using the line numbers to obtain the line number position of the last line, and then indirectly obtaining how far the receiving coil has moved.
An example is as follows, with reference to fig. 11: assuming that the lidar scans a line of data, the line number of the line is 5, as shown in fig. 11 a, that is, the position of the column with the line number of 5. Whereas the total number of bits of the line number is 4 bits, i.e. at most 16 line numbers. These 16 rows correspond to 16 equally divided rows of columns on the receiving coil, with B being column row number 1 and C being column row number 16 in fig. 11. The position of the laser beam at 5/16 of the receiving coil at this time can be calculated from the above data. Assuming that the total width of the receiving coil is 50cm, it can be deduced that the laser strikes at 15.625cm of the whole receiving coil, such as the position E in fig. 11, and the position of the column row with row number 1 is deduced, and the position is 15.625cm from the detection line, that is, the driver drives the car, and the receiving coil is longitudinally moved by 15.625cm toward the transmitting coil. The last row should be located 34.375cm from the laser scanning range radar position, such as the position F in fig. 11, and the column row with row number 16 should be calculated, which is 34.375cm from the detection line.
When the laser scanning ranging radar detects that the column row with the row number of 16 reaches the standard straight line, and the fitted detection straight line has no deviation, skew and other conditions, the automobile alignment success can be judged, and a driver or an AGV is prompted to stop.
In summary, all the alignment information, including the detection line information, the standard line information, the offset information, the skew information, and the like, are informed to the vehicle-mounted display screen through the receiving device which has established the connection. The information prompts the driver to twist the steering wheel, control the speed of the vehicle, and adjust the angle in time to more align the transmitting device.
The alignment and information transmission scheme formed by the receiving coil and the laser scanning range radar is completed.
The invention adds two groups of laser beams or small-angle infrared rays and the like on the power pickup device, and the specific description is not needed, so long as the core meaning of the invention can be achieved. The receiving element is placed opposite to the laser beam, and the receiving element is not specially described, and can be a photosensitive resistor, a photosensitive diode or a special laser detection element, so that the core meaning of the application can be achieved. During the movement of the power pick-up device, the power transmitting cable should always be within the half-opening defined by the laser beam. If the cable sags or is shifted laterally, the optical path of the laser beam is blocked, so that the receiving element cannot receive the laser irradiation and is in an opposite state, on state or blocked state. This state is processed by subsequent circuitry and an alarm can be raised. Even after data communication with a third party system, a specific fault point position is indicated, and maintenance personnel are guided to directly maintain. Without having to examine all the way along the track. The scheme can also detect the line problem in real time in the running of the system, and maximally reduces the fault risk.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment includes a separate embodiment, and that this description is for clarity only, and that the disclosure is not limited to specific embodiments, and that the embodiments may be combined appropriately to form other embodiments that will be understood by those skilled in the art.
Claims (6)
1. System for wireless counterpoint and information transfer charge based on coil structure, its characterized in that:
the receiving coil is provided with a plurality of upright posts arranged in an m x n matrix, upright post information is arranged on the upright posts, the heights of the upright posts in the m x n matrix are the same, the widths are the same, and the lengths are different;
in the column direction, the lengths of a plurality of columns of the ith column are gradually increased from the 1 st row to the m th row, wherein m is an integer greater than or equal to 2, the lengths of a plurality of columns of other columns except the ith column are the same, i is more than or equal to 1 and less than or equal to n, i and n are integers, the lengths of columns of the 1 st column to the n th column are different, and the intervals between adjacent columns are unequal;
in the row direction, the spacing between adjacent rows is the same, the lengths of the columns in the ith column in each row of columns are different, and the lengths of a plurality of columns in each row of columns are different;
the receiving coil is arranged on the receiving end equipment, one surface of the receiving coil, which is provided with a plurality of stand columns, is positioned right above the transmitting coil, the transmitting coil is provided with a laser scanning range radar, the stand columns on the receiving coil are arranged facing the laser scanning range radar, and the laser scanning range radar acquires the stand column information on the receiving coil;
the column information on the receiving coil comprises a data head, line number information, a receiving coil self-code and a data tail;
the data head is the beginning of a certain row of column information, the length of the data head accounts for 10% of the whole row of information, wherein 5% of the data head comprises the column length, and the remaining 5% is the column-free length;
the line number information is formed by 5-bit column widths, wherein the first 4-bit information is formed by binary codes, the maximum is 16, and the last column width is a stop bit of the line number information;
the receiving coil self-code is information representing the unique identity of receiving end equipment and is used for pairing of an integral wireless charging system, the receiving coil self-code consists of 8 bits of data, each bit of data occupies the length of 3 upright posts, wherein one upright post is placed on the length of a first upright post, and whether the upright post is contained or not is determined according to the data on the length of a second upright post; if the bit is 1, there is a column; if the bit is 0, there is no column; the third column has no column in length and is used as a stop symbol;
the data tail represents the end of this line of information, which is started after the end of the coding by the last receiving coil itself, which information all contains the uprights.
2. The system for wireless charging alignment and information transfer based on coil structure of claim 1, wherein: in the information of each row, the row number information and the coding of the transmitting coil are repeatedly circulated until a complete circulation cannot be placed any more finally, and the process is finished.
3. The system for wireless charging alignment and information transfer based on coil structure of claim 2, wherein: the name or number of each row is defined by row number information, which depends on the column of the ith column in the row.
4. The method for wireless charging alignment and information transmission based on the coil structure is characterized by comprising the following steps of:
a system for wireless charging alignment and information transfer using the coil-based structure of any one of claims 1-3, the method comprising the steps of:
the equipment to be charged, which is loaded with the receiving equipment, enters a charging area, and a receiving coil on the receiving equipment is paired with a transmitting coil of the generating equipment through column information on the receiving coil, so that alignment and information transmission are realized;
the laser scanning range radar on the transmitting equipment detects the coded information consisting of the column information on the receiving coil, namely the column information, and acquires the identity of the receiving coil, namely the unique coded address or the unique identity information;
the transmitting device actively calls the receiving device, establishes connection with the receiving device and carries out mutual data transmission;
the transmitting coil and the receiving coil are aligned specifically:
after the laser scanning range radar obtains the information of the upright post, analyzing a data head and a data tail, wherein the end of the data head is one boundary of the receiving coil, the end of the data tail is the other boundary of the receiving coil, acquiring the length of the whole receiving coil, and converting the receiving coil into a straight line with a fixed length to form a detection straight line;
and under the alignment state of the receiving coil and the transmitting coil, the laser scanning range radar is used for detecting the position state of the straight line and the standard straight line, and judging whether the receiving coil of the equipment to be charged is aligned with the transmitting coil of the power generation equipment.
5. The method for wireless charging alignment and information transfer based on coil structure as claimed in claim 4, wherein:
if the detection straight line gradually approaches the standard straight line and the detection straight line are overlapped, the receiving coil is aligned with the transmitting coil;
if the detection line gradually deviates from the standard line, the receiving coil is not aligned with the transmitting coil.
6. The method for wireless charging alignment and information transfer based on coil structure as claimed in claim 5, wherein:
the offset of the receiving coil is judged by using the line number information,
when the laser scanning range radar scans a certain line, the line numbers of the line are decoded, the line numbers are arranged in sequence, and the moving distance of the receiving coil is obtained according to the line numbers and the line number position of the last line.
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