WO2023045799A1 - 位置识别方法、装置、系统、设备及存储介质 - Google Patents

位置识别方法、装置、系统、设备及存储介质 Download PDF

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Publication number
WO2023045799A1
WO2023045799A1 PCT/CN2022/118413 CN2022118413W WO2023045799A1 WO 2023045799 A1 WO2023045799 A1 WO 2023045799A1 CN 2022118413 W CN2022118413 W CN 2022118413W WO 2023045799 A1 WO2023045799 A1 WO 2023045799A1
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Prior art keywords
power supply
target device
voltage signal
supply system
target
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PCT/CN2022/118413
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English (en)
French (fr)
Inventor
宋恩亮
赵振宇
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盒马(中国)有限公司
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Publication of WO2023045799A1 publication Critical patent/WO2023045799A1/zh

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K17/00—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations
    • G06K17/0022—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device
    • G06K17/0029—Methods or arrangements for effecting co-operative working between equipments covered by two or more of main groups G06K1/00 - G06K15/00, e.g. automatic card files incorporating conveying and reading operations arrangements or provisious for transferring data to distant stations, e.g. from a sensing device the arrangement being specially adapted for wireless interrogation of grouped or bundled articles tagged with wireless record carriers

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  • the embodiment of this specification relates to the field of computer technology, and in particular to a method for identifying a position.
  • One or more embodiments of this specification also relate to a location identification device, a computing device, and a computer-readable storage medium.
  • Electronic Shelf Label is an electronic display device that is placed on a shelf to replace paper price tags and is used to display commodity information such as product prices, names, and origins.
  • the electronic price tag can receive the price tag information issued by the server, and display the product information in the price tag information on its display screen, reducing the cost of replacing the product information on the paper price tag and improving the update efficiency.
  • the relationship between the electronic price tag and the shelf power supply rail will be established in advance on the server side, and then the electronic price tag will be sent to the corresponding shelf power supply rail. However, if the electronic price tag appears during use If there is a change in position, such as moving from one shelf to another, or moving from the first floor to the third floor of the same shelf, then the server has no way to locate the position of the electronic price tag well.
  • the embodiment of this specification provides a location identification method.
  • One or more embodiments of this specification also relate to a location identification device, a computing device, and a computer-readable storage medium, so as to solve the technical defects existing in the prior art.
  • a location identification method the method is applied to a location identification device, and the device includes: a power supply system, a sampling resistor, and a target device, wherein the sampling resistor is connected in series to the The power supply path of the power supply system, the target device is installed in the power supply system, and the method includes:
  • the target device collects a changed voltage signal in the power supply system, processes the changed voltage signal, and sends a processing result to a server, wherein the processing result includes a voltage change node;
  • the target device determines the target location according to the feedback information from the server.
  • a position identification device including a power supply system, a sampling resistor, and a target device, wherein the sampling resistor is connected in series with the power supply path of the power supply system, and the target device is installed in said power supply system, and,
  • the target device is configured to: collect a changed voltage signal in the power supply system, process the changed voltage signal, and send the processing result to the server, wherein the processing result includes a voltage change node ;
  • the target device is configured to: determine a target location according to feedback information from the server.
  • a position identification system including a shelf power supply rail, an electronic price tag, and a server, wherein the electronic price tag is installed on the shelf power supply rail, and the system includes:
  • the electronic price tag is configured to collect a changing voltage signal in the shelf power supply rail, process the voltage signal, and send the processing result to the server;
  • the server is configured to compare the similarity between the processing result and the preset array corresponding to the shelf power supply rail to determine feedback information, and send the feedback information to the electronic price tag, wherein the feedback
  • the information is a target power supply rail determined from the power supply rails
  • the electronic price tag is further configured to receive the feedback information, and determine the position of the power supply rail of the shelf based on the feedback information.
  • a computing device including a memory and a processor; the memory is used to store computer-executable instructions, the processor is used to execute the computer-executable instructions, and the computer can When the execution instruction is executed by the processor, the steps of realizing the above location identification method are implemented.
  • a computer-readable storage medium which stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, the steps of the above location identification method are implemented.
  • a computer program is provided, wherein, when the computer program is executed in a computer, the computer is caused to execute the steps of the above location identification method.
  • the location identification method is applied to a location identification device
  • the device includes: a power supply system, a sampling resistor, and a target device, wherein the sampling resistor is connected in series to the power supply System power supply path, the target device is installed in the power supply system, the method includes: the target device collects a changed voltage signal in the power supply system, processes the changed voltage signal, and converts the processing result Send to the server, wherein the processing result includes a voltage change node; the target device determines the target position according to the feedback information from the server.
  • the position recognition method installs the target device on the power supply rail by connecting the sampling resistor in series in the power supply path of the power supply system, so that the target device collects the voltage signal changing in the power supply system in real time, and processes the voltage signal and converts it into
  • the digital signal recognizable by the server enables the server to determine the location of the target device based on the digital signal, realizes the spatial positioning capability that meets the digital requirements with low hardware and software costs, and solves the problem of affecting the positioning function caused by the position adjustment of the target device .
  • Fig. 1 is a schematic structural diagram of a power supply system in a position identification method provided by an embodiment of this specification
  • Fig. 2 is a flow chart of a position identification method provided by an embodiment of this specification
  • Fig. 3 is a schematic diagram of a voltage measurement circuit of a position identification method provided by an embodiment of this specification
  • Fig. 4 is a working current waveform diagram of a target device of a position recognition method provided by an embodiment of this specification
  • Fig. 5 is a waveform diagram of the voltage value recorded by the target device of a position identification method provided by an embodiment of this specification;
  • Fig. 6 is a schematic structural diagram of a position identification device provided by an embodiment of this specification.
  • Fig. 7 is a structural block diagram of a computing device provided by an embodiment of this specification.
  • first, second, etc. may be used to describe various information in one or more embodiments of the present specification, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another.
  • the first may also be referred to as the second, and similarly, the second may also be referred to as the first without departing from the scope of one or more embodiments of the present specification.
  • the word "if” as used herein may be interpreted as “at” or "when” or "in response to a determination.”
  • Electronic Shelf Label An electronic display device with information sending and receiving function, Electronic Shelf Label, referred to as ESL.
  • Electronic price tags are mainly used in electronic labels that display price information in supermarkets, convenience stores, and pharmacies.
  • the electronic price tag is generally placed on the shelf. It is an electronic display device that can replace the traditional paper price tag.
  • Power rail electronic price tag an electronic price tag system powered by conductive rails.
  • Electronic price tag is an electronic display device with information sending and receiving function, which is mainly used in electronic labels for displaying price information in supermarkets, convenience stores, pharmacies, etc. Placed on the shelf, it can replace the electronic display device of the traditional paper price tag.
  • Each electronic shelf label is connected to the computer database of the mall through a wired or wireless network, and the latest commodity information is displayed on the screen on the electronic price tag.
  • Automatic grouping the method of grouping the electronic price tags on the power supply rail according to the power supply rail by signal processing method. Automatic grouping is the basis of ESL self-positioning. By delineating the specific ESL on a certain power supply rail, the relative position relationship of ESL on this power supply rail can be further calculated and determined, and the different power supply rails on the same shelf and their installation on the power supply rail can be further determined. The relative positional relationship of the ESL can be further calculated to obtain the positional relationship between the shelves.
  • ESL is installed on the power supply rail, powered by the power supply rail, and the power supply rail takes power from the power strip on the back of the shelf through the power supply head.
  • a current sampling resistor is added to the power-taking path, so that when the ESL operating current that the power supply rail is responsible for powering changes, the load current change of the entire power supply rail is presented in the form of voltage on the sampling resistor.
  • the sampling resistor isolates the load changes in other areas of the shelf power supply system from the power supply rail, and plays a certain attenuation effect.
  • Power rail electronic price tag system a system that uses conductive rails to power electronic price tags.
  • ESL As the digital infrastructure of the supermarket retail industry, ESL has been replicated in large quantities in the industry. It is expected that through simple low-cost hardware and software upgrades, ESL’s basic digital capabilities related to spatial positioning will be increased, and more digital value mining of ESL hardware in retail scenarios will be realized. .
  • the ESL of Bluetooth technology adds the function of standard Beacon positioning signal source, but it is difficult to be popularized due to the position uncertainty caused by ESL position adjustment.
  • the positioning of ESL can include two types: an independently deployed positioning Beacon system and a positioning system that endows the ESL with the function of positioning Beacon at a specific location.
  • the independently deployed positioning Beacon system generally requires 5 Deploy at least one Beacon beacon in the meter grid.
  • the disadvantages of independently deploying the Beacon beacon system include: separate system, independent cost, high hardware cost; one-time use, limited service life of the equipment, and later maintenance expenses Higher; the installation location is limited by on-site conditions, and professional deployment personnel and tool systems are required; the deployment density is limited, and Bluetooth fingerprint technology is generally used to calculate the location, which requires on-site fingerprint data collection.
  • the positioning system that gives the ESL positioning Beacon function at a specific location needs to select an ESL fixed at a characteristic point, and use a large-capacity battery as a standard Beacon broadcast beacon to realize an indoor positioning system.
  • the disadvantages of this system include: ESL position may be changed with the adjustment of SPT width and position, which will affect the positioning function; the signal occlusion caused by the change of site environment will bring uncertainty to the positioning accuracy; the ESL endowed with positioning function is a separate ESL type , requires an independent management system to manage.
  • this solution realizes the precise self-positioning capability within the range of the ESL power supply rail through the power supply rail design and the ESL software and hardware design, and endows the ESL with the ability to locate anchor nodes.
  • a location identification method is provided.
  • One or more embodiments of this specification also relate to a location identification device, a computing device, a computer-readable storage medium, and a computer program. The following The detailed description will be given in detail one by one in the embodiment.
  • FIG. 1 shows a schematic structural diagram of a power supply system in a location identification method according to an embodiment of the present specification.
  • the power supply system in Fig. 1 includes the power supply device at the bottom of the shelf, the power supply guide rail, the power supply head, the power supply wire, the sampling resistor and the guide rail end.
  • the power supply device at the bottom of the shelf supplies power to the entire power supply system
  • the power supply head takes power from the power supply device at the bottom of the shelf.
  • the sampling resistor is placed at the power-taking head, power-taking wire or the end of the guide rail, etc., and connected in series to the positive power supply path of the power supply.
  • the ESL is installed on the power supply rail, it is powered by the power supply rail.
  • the sampling resistor connected in series on the positive path of the power supply rail realizes that when the operating current of the ESL changes, the load current change of the entire power supply rail is presented in the form of voltage on the sampling resistor, so that the ESL can collect the voltage of the power supply rail Signal.
  • the sampling resistor is also called the current detection resistor, which refers to the current sampling resistor and the voltage sampling resistor.
  • the function of the current sampling series resistor with a small resistance value is to accurately collect current in the circuit, and the voltage sampling resistor with a large resistance value in parallel.
  • This kind of resistor is named according to the product use and function, so engineers call it sampling resistor.
  • a current sampling resistor which is connected in series in the circuit to convert the current into a voltage signal for measurement.
  • the number of ESLs installed on each ESL power rail 1-15
  • the maximum sampling resistance to ensure the normal operation of ESL can be determined as follows:
  • the embodiment of this specification does not limit the selection of the sampling resistor, which can be determined according to the actual situation in practical applications.
  • the sampling resistor In practical applications, in order to make the high potential end of the sampling resistor greater than zero and the low potential end equal to zero, the sampling resistor should be connected in series with the positive power supply path of the power supply system.
  • the specific implementation is as follows:
  • the sampling resistor is connected in series with the positive power supply path of the power supply system, wherein the power supply system includes a power supply head, a power supply wire and a power supply guide rail.
  • Fig. 2 shows a flow chart of a location identification method provided according to an embodiment of this specification, wherein the method is applied to a location identification device, and the device includes: a power supply system, a sampling resistor and a target device , wherein the sampling resistor is connected in series in the power supply path of the power supply system, the target device is installed in the power supply system, and the specific location identification method includes the following steps.
  • Step 202 The target device collects a changed voltage signal in the power supply system, processes the changed voltage signal, and sends a processing result to a server, wherein the processing result includes a voltage change node.
  • the target device can be understood as the ESL of the above-mentioned embodiment; the ESL is installed on the power supply rail of the power supply system, and the ESL receives the power supply from the power supply rail.
  • the sampling resistor is connected in series with the power supply path, and the operating current of the ESL changes , the voltage signal on the supply rail also changes.
  • the ESL collects the changing voltage signal on the power supply rail, processes the changing voltage signal, and sends the processing result to the server.
  • a server also called a server, is a device that provides computer services.
  • the server can be divided into file server, database server, application program server, WEB server, etc., according to the service request of the computer, and corresponding processing, has the ability to undertake and guarantee the service.
  • the server in the embodiment of this specification can be understood as a server that receives the changed voltage signal processing result sent by the target device, and determines the position of the ESL based on the changed voltage signal processing result. That is, when receiving the processing result of the varying voltage signal sent by the ESL, the server can analyze the processing result to determine the specific location of the ESL.
  • the target device collects the changing voltage signal in the power supply system, processes the changing voltage signal, and sends the processing result to the server; after the server receives the processing result, it analyzes the processing result to determine the target device target location.
  • the sampling resistor in order to make the high potential end of the sampling resistor greater than zero and the low potential end equal to zero, the sampling resistor should be connected in series to the positive power supply path of the power supply system.
  • the specific implementation is as follows:
  • the sampling resistor is connected in series with the positive power supply path of the power supply system, wherein the power supply system includes a power supply head, a power supply wire and a power supply guide rail;
  • the target device is mounted on the power supply rail.
  • the sampling resistor is connected in series with the power supply head, the power supply wire or the positive power supply path of the power supply rail, and the target device is installed on the power supply rail, and the power supply rail supplies power to it.
  • the target device when the power supply system is in the power supply state, when the target device meets the conditions for voltage signal changes, the target device will collect the voltage signal of the power supply system in real time, so as to realize subsequent processing of the voltage signal changed in the real-time collection power supply system .
  • the specific implementation is as follows:
  • the target device determines whether the condition for voltage signal change is met, and if so, collects the voltage signal of the power supply system, wherein the voltage signal of the power supply system changes as the current state of the target device changes.
  • the target device determines whether the conditions for the change of the voltage signal are satisfied include various situations, each of which will be explained in detail below.
  • the ESL when the ESL is installed on the power supply rail, it receives the power supply from the power supply rail, and when the ESL satisfies the condition that the voltage signal changes, the voltage signal that changes on the power supply rail is collected.
  • the ADC analog-to-digital converter built into the main control chip is used to measure the real-time voltage signal of the power supply rail (ESL power supply contact piece).
  • the resistor divider method can be used to divide the voltage of the power supply rail to within the working voltage of the main control chip (such as 3.3V), and add an overvoltage protection diode. Ensure that the work of the main control chip is not affected by external voltage fluctuations.
  • the specific implementation is as follows:
  • the target device collects the changing voltage signal in the power supply system, including:
  • the target device collects the changing voltage signal in the power supply system through a voltage measurement circuit, wherein the voltage measurement circuit includes an MCU-ADC, and an overvoltage protection diode is arranged in the voltage measurement circuit.
  • the MCU can be understood as a microprocessor
  • the ADC can be understood as an analog-to-digital converter
  • the voltage measurement circuit can be understood as an ESL power supply rail voltage measurement circuit.
  • the ADC of the main control chip is used to measure the voltage of the power supply rail. Signal.
  • FIG. 3 shows a schematic diagram of a voltage measurement circuit of a location identification method according to an embodiment of the present specification.
  • the voltage measurement circuit in Figure 3 can be understood as a voltage measurement circuit for ESL power supply rails, including voltage dividing resistors R1 (300), R2 (310), overvoltage protection Zener diode (320) and the MCU-ADC input interface of ESL (330).
  • the voltage dividing resistors R1 (300) and R2 (310) divide the 12V power supply rail voltage (340) to ensure that the voltage on R2 (310) is lower than 2V, and connect D1 in parallel to the voltage dividing resistor R2 (310).
  • the Zener diode (320) for overvoltage protection ensures that the input voltage of the MCU-ADC (330) is lower than 3.3V.
  • the MCU-ADC (330) can collect the change state of the voltage signal in real time.
  • the embodiment of this specification does not limit the parameter selection of R1 (300), R2 (310) and the overvoltage protection Zener diode (320), which can be determined according to actual conditions in practical applications.
  • the premise of ESL to collect the voltage signal of the power supply system through the power supply rail voltage measurement circuit is that when the voltage on the power supply rail changes, the problem of under which circumstances ESL meets the conditions for collecting the voltage signal of the power supply system arises.
  • the following ways in the embodiments of this specification to determine whether the ESL satisfies the condition that the voltage signal changes.
  • the first case is that, when the ESL receives an operation command for the target component, it determines that the condition for the voltage signal to change is satisfied.
  • the specific implementation is as follows:
  • the target device determines whether a condition for a change in the voltage signal is met, including:
  • the target device determines whether an operation instruction for a target component is received.
  • the target component is an internal component of the target device, that is, a component that can meet the change of the voltage signal after operating on the target component of the target device.
  • the target component is an internal component of the target device, that is, a component that can meet the change of the voltage signal after operating on the target component of the target device.
  • components in the target device that consume large amounts of energy, components that consume high computing resources, and the like are examples of the target component that consume large amounts of energy, components that consume high computing resources, and the like.
  • the target device determines whether an operation instruction for the target component is received, including:
  • the target device determines that the target component is a component whose energy consumption is greater than or equal to a preset energy consumption threshold, receiving a shutdown instruction for the target component;
  • the target device When the target device determines that the target component is a processor, it receives an instruction for reducing the occupancy of computing resources for the target component, an instruction for reducing the operating frequency of the target component, or an instruction for reducing power consumption for the target component .
  • the preset energy consumption threshold may be set according to an actual application, which is not limited in this embodiment of this specification.
  • the target device when the energy consumption of the target component in the target device is greater than or equal to the preset energy consumption threshold, it may be determined that the target device satisfies the condition that the voltage signal changes when a shutdown command for the target component is received.
  • the target component is a processor
  • when receiving an instruction to reduce the occupation of computing resources of the target component, an instruction to reduce the operating frequency of the target component, or an instruction to reduce the power consumption of the target component it can be Determine that the target device satisfies the condition that the voltage signal changes.
  • receiving a shutdown command for the display components and controlling the change of the ESL's own operating current by reducing the energy consumption of the ESL, so as to determine that it meets the conditions for the voltage signal to change.
  • the target component is the processor of the target device
  • the target device receives a computing resource occupancy instruction for the target component, an instruction for reducing the operating frequency of the target component, or an instruction for reducing power consumption of the target component, through Reduce the computing resource occupation of ESL, reduce the main frequency of operation, reduce power consumption, etc. to control the change of ESL's own operating current, so as to determine that it meets the conditions for voltage signal changes.
  • the above-mentioned determination of whether the target device satisfies the conditions for the change of the voltage signal belongs to the software method.
  • the following describes how to control the change of the working current of the ESL through the hardware method, so as to determine that the target device meets the conditions for the change of the voltage signal.
  • the specific implementation is as follows:
  • the above-mentioned operation instructions for the ESL belong to the software method, and the following describes how the hardware method controls the working current of the ESL.
  • the ESL determines whether the IO interface of the micro-control unit is externally connected with a leakage resistor to ground, and determines that the condition for the voltage signal to change is satisfied.
  • the target device determines whether a condition for a change in the voltage signal is met, including:
  • the target device determines whether the IO interface of the microcontroller unit is externally connected with a ground leakage resistor.
  • the target device can determine whether the working current of the ESL has changed by determining whether the IO interface of the microcontroller unit is externally connected with a ground leakage resistor, thereby determining that the voltage signal has changed.
  • the microcontroller unit can be understood as the central processing unit of the target device.
  • the micro control unit may be an MCU of the ESL.
  • an external leakage resistor to ground can be connected to the IO interface of the MCU of the ESL to control the IO interface to work at a high level.
  • the maximum operating current limit of the IO interface (such as 20mA) can realize the control of the ESL's own current , so as to determine that the condition for the voltage signal to change is satisfied.
  • the target device determines whether the condition for changing the voltage signal is met, including:
  • the target device determines whether a preset voltage signal collection node is reached, wherein the voltage signal collection node is determined by the target device according to a media access control location within a preset time.
  • the preset voltage signal collection node is determined by the target device according to the MAC address within a preset time, and the preset time can be set according to actual applications, and will not be repeated here.
  • the media access control address of the target device is the MAC address of the ESL, which can control itself to work in a specific working current state according to a random time period selection method within 1 minute after the ESL is powered on.
  • the specific implementation method is as follows Said:
  • a full power state current is 30mA
  • B black screen and no communication state current is 5mA
  • control ESL to work in A working state within a certain random time slice, other The time works in the B working state.
  • the MAC address of the ESL can be used as a random method, the last byte of the MAC address is X, and the ESL is configured to enter the A working state after the startup is completed, enter the B working state in X/5 seconds, and enter the B working state in X/5+8 seconds Return to the A state, so that each ESL will enter a B black screen and no communication state within 60 seconds after startup.
  • FIG. 4 shows a working current waveform diagram of a target device of a method for identifying a position according to an embodiment of the present specification.
  • Figure 4 shows the ESL operating current waveform diagram for an example where the last byte of the MAC address is 0x1E.
  • the decimal number of the last byte of the MAC address is 30, and the ESL is configured to enter the B working state after startup , enter the B working state in 6 seconds, and return to the A state in 14 seconds, so that each ESL will enter a B black screen and no communication state within 60 seconds after startup.
  • the state current of ESL randomly entering different working states according to a certain random method can be adjusted according to the actual situation, and the number of times of entering different working states can be adjusted according to requirements.
  • the duration of entering different working states can be adjusted according to needs, and can be further randomized.
  • the target device satisfies the condition that the voltage signal changes by detecting whether the ESL is installed in the power supply system or whether it is removed from the power supply system.
  • the specific implementation is as follows:
  • the target device determines whether a condition for a change in the voltage signal is met, including:
  • the target device determines whether it is installed to or removed from the power supply system.
  • ESL when the ESL is removed from the power supply rail by the user or installed on the power supply rail by the user, other ESLs on the same power supply rail can be used to determine whether the target device satisfies the voltage signal change condition.
  • the operating current of other ESLs on the same power supply rail will change, thereby satisfying the condition for the voltage signal to change. At this time, it is determined by other ESLs on the same power supply rail that the voltage signal on the power supply rail changes.
  • the voltage signal of the power supply rail can be collected by a method at a preset sampling rate within a preset time period.
  • the target device collects the changing voltage signal in the power supply system, including:
  • the target device collects voltage signals changing in the power supply system according to a preset sampling rate within a preset time period.
  • the preset time period can be understood as the time period from the completion of ESL startup to the time set by the user;
  • the preset sampling rate can be understood as the frequency at which the ESL collects voltage signals.
  • the ESL collects the voltage status of the power supply rail at a sampling rate of 100Hz, and each ESL can collect voltage signals of 6000 sampling points.
  • the embodiment of this specification does not limit the selection of the preset time period and sampling rate, and specific applications can be set according to actual needs.
  • the target device When the target device satisfies the condition that the voltage signal changes, the voltage signal changed in the power supply system is collected. After collecting, the target device needs to process the collected changing voltage signal, so as to send the processed signal to the server to determine the position of the target device.
  • the voltage signal processing of specific changes can be realized in the following ways:
  • the processing of the changed voltage signal includes:
  • the target device performs filtering processing on the voltage signal to obtain a filtered voltage signal sequence, and converts the voltage signal sequence into a two-dimensional array.
  • the filtering process can be understood as filtering the noise signal contained in the collected voltage signal.
  • the ESL collects the voltage status of the power supply rail at a sampling rate of 100 Hz, and each ESL collects a total of 6000 sampling points of the voltage signal Yn.
  • the median filter method is used to filter the collected voltage signal Yn of 6000 sampling points with 11 o'clock as the window.
  • Kn by deriving the voltage signal Yn
  • set the edge detection threshold Gate 11mV (corresponding to 25mA)
  • the specific implementation of the normalization process is as follows: starting from the first edge point (such as 6), using 2 seconds and 8 seconds as the normalized integer divisor to realize the denoising process of the data and improve the accuracy of the data. sex.
  • the specific implementation of the compression process is: extracting the feature compression sequence STEPn, only recording the time point when the signal jumps and the voltage value before and after the jump, and using the two-dimensional array IDATA to record the sequence STEPn.
  • Fig. 5 shows a waveform diagram of a voltage value recorded by a target device according to a position identification method provided by an embodiment of the present specification.
  • Fig. 5 shows the waveform diagrams of the time points at which a plurality of ESL recording signals jump and the voltage values before and after the jump, then according to the sequence STEPn in the embodiment given in Fig. 5, its two-dimensional array for:
  • the first line records the current value
  • the second line records the time point of the change.
  • the accuracy of the sampled data is improved, and after the compression process is performed, the transmission speed of the sent sampled data is increased.
  • the sending the processing result to the server includes:
  • the target device sends the two-dimensional array to the server via Bluetooth, and receives the feedback information determined by the server after comparing the similarity between the two-dimensional array and the preset array corresponding to the power supply rail, wherein,
  • the feedback information is the target power supply rail determined from the power supply rails.
  • the specific implementation is real-time.
  • the target device sends the two-dimensional array to the server through Bluetooth or other methods.
  • the server obtains the two-dimensional array (IDATA)
  • it classifies the two-dimensional array according to the voltage change node to obtain different types of arrays. and then compare each array set with preset location information to determine the location of the target device.
  • the server receives the IDATA information collected by the ESL through Bluetooth, it first classifies the ESL signals by the number of jumps, and then uses correlation calculations to compare the IDATA information of each ESL for the ESL signals with the same number of jumps. , classify the ESLs of the same ESL signal on the same power supply rail.
  • the number of jumps can be increased to enrich the features contained in the jump information and reduce the difficulty of classification.
  • the cloud server pre-stores the voltage signal arrays on all power supply rails.
  • the cloud server receives the IDATA information collected by ESL through Bluetooth, it combines the collected IDATA information with the pre-stored power supply in the database.
  • the voltage signal arrays of the guide rails are compared for similarity, and the power supply rail corresponding to the voltage signal array with the highest similarity to the IDATA information collected by the ESL is determined, and the information of the power supply rail (such as the position of the power supply rail) is sent to the ESL as feedback information.
  • Step 204 The target device determines the target location according to the feedback information from the server.
  • the server classifies the processing results, it sends the feedback information (that is, the location information of the ESL) to the target device, so as to determine the location of the target device.
  • the feedback information that is, the location information of the ESL
  • the position identification method provided by the embodiment of this specification is to install the target device on the power supply rail by connecting the sampling resistor in series in the power supply path of the power supply system, so that the current change information of any target device on the power supply rail is reflected in the voltage of the entire power supply rail Change information, collect voltage signals of the power supply system, process the voltage signals, and send the processing results to the server; after the server obtains the processing results, determine the location of the target device.
  • the location recognition method provided by the embodiment of this specification is applied to a specific supermarket store scene, and can use the existing power supply guide rail power supply ESL system capability to reduce the equipment investment and maintenance investment for store positioning capability construction; use the power supply guide rail ESL deployment Density, to achieve high-precision indoor positioning; very little hardware cost increase (sampling resistance of power supply rail and ESL partial voltage detection circuit), empowering ESL self-positioning capability, ensuring that the ESL position is updated in time when the position of the ESL changes, and the normality of the positioning function is ensured maintain.
  • the position recognition method provided by the embodiment of this specification can be applied to the scene of a supermarket store, in which the self-positioning capability of the ESL can be used, and after the respective positions of each ESL are determined, each ESL can be used as a Based on the base station to achieve the positioning function of staff and/or customers.
  • the staff's terminal receives the ESL in the A area. Signal, it can be determined that the staff has entered the A area, so as to determine the specific location of the staff. Specifically, the power supply guide rail on the A shelf is known, then by determining that the ESL sending the signal belongs to the power supply guide rail on the A shelf, it can be determined that the staff has entered the A shelf area.
  • the ESL that has completed self-positioning can be used to locate the staff, so as to realize the work supervision of the staff by the managers, facilitate the daily management of the managers, and improve the work efficiency.
  • the pre-downloaded third-party software on the customer terminal can receive The signal sent by the ESL in the supermarket determines the browsing route of the customer in the supermarket.
  • the ESL that has completed the self-positioning can be used to locate the customer, and the frequent browsing route of each customer can be known, so as to obtain the favorite products of the customer, and provide each user with new and discount reminders of the favorite products. , in order to provide customers with personalized services.
  • an embodiment of this specification also provides a position recognition system, including a shelf power supply rail, an electronic price tag, and a server, wherein the electronic price tag is installed on the shelf power supply rail, and the The system includes:
  • the electronic price tag is configured to collect a changing voltage signal in the shelf power supply rail, process the voltage signal, and send the processing result to the server;
  • the electronic price tag is installed on the shelf power supply guide rail to receive the power supply from the shelf power supply guide rail.
  • the voltage signal of the shelf power supply guide rail changes, the voltage signal of the shelf power supply guide rail is collected and processed by filtering, denoising and compression.
  • the compressed voltage signal is sent to the server in the form of an array.
  • the server is configured to compare the similarity between the processing result and the preset array corresponding to the shelf power supply rail to determine feedback information, and send the feedback information to the electronic price tag, wherein the feedback
  • the information is a target power supply rail determined from the power supply rails
  • the server After the server receives the array data sent by the electronic price tag, it compares the similarity with the array data preset locally on the server. When the comparison result shows that the similarity is high, the specific position of the power supply rail of the shelf where the electronic price tag is located is determined and feedback information is generated and sent to the electronic price tag.
  • the electronic price tag is further configured to receive the feedback information, and determine the position of the power supply rail of the shelf based on the feedback information.
  • the electronic shelf tag After the electronic shelf tag receives the feedback information returned by the server, it can obtain the position of the power supply rail of the shelf from the feedback information, so as to determine its own specific position.
  • the position recognition system installs the electronic price tag on the power supply rail of the shelf, so that the electronic price tag can collect the voltage signal of the change of the power supply rail of the shelf, and after processing the voltage signal, the processing result is sent to to the server; after the server obtains the processing result, it determines the specific position of the power supply rail of the shelf where the electronic price tag is located, and sends the specific position as a feedback signal to the electronic price tag; the electronic price tag receives the feedback signal to determine the position of the power supply rail of the shelf where it is located specific location.
  • FIG. 6 shows a schematic structural diagram of a location identification device provided according to an embodiment of this specification, the device includes a power supply system 602, a sampling resistor 604, and a target device 606, Wherein, the sampling resistor 604 is connected in series in the power supply path of the power supply system 602, the target device 606 is installed in the power supply system 602, and,
  • the target device 606 is configured to: collect a changed voltage signal in the power supply system 602, process the changed voltage signal, and send the processing result to a server;
  • the target device 606 is configured to: determine a target location according to feedback information from the server.
  • the sampling resistor 604 is connected in series with the positive power supply path of the power supply system 602, wherein the power supply system 602 includes a power supply head, a power supply wire and a power supply rail;
  • the target device 606 is mounted on the power supply rail.
  • the target device 606 is configured to: determine whether the condition for the voltage signal to change is satisfied, and if so, collect the voltage signal of the power supply system 602, wherein the voltage signal of the power supply system 602 changes with the The current state of the target device 606 changes.
  • the target device 606 is configured to: collect the changing voltage signal in the power supply system 602 through a voltage measurement circuit, wherein the voltage measurement circuit includes an MCU-ADC, and the voltage measurement circuit is set There are overvoltage protection diodes.
  • the target device 606 is configured to: determine whether an operation instruction for the target component is received.
  • the target device 606 is configured to: receive a shutdown instruction for the target component when it is determined that the target component is a component whose energy consumption is greater than or equal to a preset energy consumption threshold; or
  • the target device 606 is configured to: when it is determined that the target component is a processor, receive an instruction for reducing the occupancy of computing resources for the target component, an instruction for reducing the operating frequency of the target component, or receive an instruction for reducing the operating frequency of the target component Power reduction instructions for the part.
  • the target device 606 is configured to: determine whether the IO interface of the microcontroller unit is externally connected with a bleed resistor to ground.
  • the target device 606 is configured to: determine whether a preset voltage signal collection node is reached, wherein the voltage signal collection node is controlled by the target device 606 according to the media access within a preset time Sure.
  • the target device 606 is configured to: determine whether it is installed to the power supply system 602 or whether it is removed from the power supply system 602 .
  • the target device 606 is configured to: collect the voltage signal changing in the power supply system 602 at a preset sampling rate within a preset time period.
  • the target device 606 is configured to: filter the voltage signal to obtain a filtered voltage signal sequence, and convert the voltage signal sequence into a two-dimensional array.
  • the target device 606 is configured to: send the two-dimensional array to the server via Bluetooth, and the server compares the similarity between the two-dimensional array and the preset array corresponding to the power rail The feedback information determined later, wherein the feedback information is the target power supply rail determined from the power supply rails.
  • the position identification device installs the target device 606 on the power supply rail by connecting the sampling resistor 604 in series in the power supply path of the power supply system 602, so that the target device 606 collects the changing voltage signal in the power supply system 602 in real time, And the voltage signal is processed and converted into a digital signal recognizable by the server, so that the server can determine the position of the target device 606 based on the digital signal, realizing the spatial positioning capability to meet the digitalization requirements with low hardware and software costs, and solving the problem of the target device 606. Problems that affect the positioning function caused by position adjustment.
  • FIG. 7 shows a structural block diagram of a computing device 700 provided according to an embodiment of this specification.
  • Components of the computing device 700 include, but are not limited to, memory 710 and processor 720 .
  • the processor 720 is connected to the memory 710 through the bus 730, and the database 750 is used for storing data.
  • Computing device 700 also includes an access device 740 that enables computing device 700 to communicate via one or more networks 760 .
  • networks include the Public Switched Telephone Network (PSTN), Local Area Network (LAN), Wide Area Network (WAN), Personal Area Network (PAN), or a combination of communication networks such as the Internet.
  • Access device 740 may include one or more of any type of network interface (e.g., a network interface card (NIC)), wired or wireless, such as an IEEE 802.11 wireless local area network (WLAN) wireless interface, Worldwide Interoperability for Microwave Access ( Wi-MAX) interface, Ethernet interface, Universal Serial Bus (USB) interface, cellular network interface, Bluetooth interface, Near Field Communication (NFC) interface, etc.
  • NIC network interface card
  • the above-mentioned components of the computing device 700 and other components not shown in FIG. 7 may also be connected to each other, for example, through a bus. It should be understood that the structural block diagram of the computing device shown in FIG. 7 is only for the purpose of illustration, rather than limiting the scope of this description. Those skilled in the art can add or replace other components as needed.
  • Computing device 700 can be any type of stationary or mobile computing device, including mobile computers or mobile computing devices (e.g., tablet computers, personal digital assistants, laptop computers, notebook computers, netbooks, etc.), mobile telephones (e.g., smartphones), ), wearable computing devices (eg, smart watches, smart glasses, etc.), or other types of mobile devices, or stationary computing devices such as desktop computers or PCs.
  • mobile computers or mobile computing devices e.g., tablet computers, personal digital assistants, laptop computers, notebook computers, netbooks, etc.
  • mobile telephones e.g., smartphones
  • wearable computing devices eg, smart watches, smart glasses, etc.
  • desktop computers or PCs e.g., desktop computers or PCs.
  • Computing device 700 may also be a mobile or stationary server.
  • the processor 720 is configured to execute the following computer-executable instructions. When the instructions are executed by the processor, the steps of the above-mentioned position identification method are realized.
  • An embodiment of the present specification also provides a computer-readable storage medium, which stores computer-executable instructions, and when the computer-executable instructions are executed by a processor, they are used to implement the steps of the aforementioned location identification method.
  • the computer instructions include computer program code, which may be in source code form, object code form, executable file or some intermediate form, and the like.
  • the computer-readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a removable hard disk, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM, Read-Only Memory) , Random Access Memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal and software distribution medium, etc.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • electrical carrier signal telecommunication signal and software distribution medium, etc.

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Abstract

位置识别方法、装置、系统、设备及存储介质，其中，所述位置识别方法应用于位置识别装置，所述装置包括：供电系统、取样电阻以及目标设备，其中，所述取样电阻串联在所述供电系统供电通路，所述目标设备安装在所述供电系统，所述方法包括：所述目标设备采集所述供电系统中变化的电压信号，并对所述变化的电压信号进行处理，且将处理结果发送至服务器（202），其中，所述处理结果中包含电压变化节点；所述目标设备根据所述服务器的反馈信息确定目标位置（204）。

Description

位置识别方法、装置、系统、设备及存储介质
本申请要求2021年09月23日递交的申请号为202111116898.5、发明名称为“位置识别方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本说明书实施例涉及计算机技术领域，特别涉及一种位置识别方法。本说明书一个或者多个实施例同时涉及一种位置识别装置，一种计算设备，以及一种计算机可读存储介质。
背景技术
电子价签(ESL，Electronic Shelf Label)是一种放置于货架上，以替代纸质价签并用于显示产品的价目、名称、产地等商品信息的电子显示装置。电子价签可以接收服务端下发的价签信息，并将价签信息中的商品信息显示在其显示屏幕上，减少纸质价签更换商品信息的成本，提高更新效率。
现有技术中，会预先在服务端建立电子价签与货架供电导轨之间的关联关系，再将电子价签下发到对应的货架供电导轨上，但是若使用的过程中，电子价签出现了位置的变化，如从一个货架移动到了另外一个货架，或者是从同一个货架的第一层移动到了第三层，那么服务端就没有办法很好的对电子价签的位置进行定位。
因此，如何提高ESL的定位精度，使其不受位置改变影响定位功能，是目前首要解决的问题。
发明内容
有鉴于此，本说明书施例提供了一种位置识别方法。本说明书一个或者多个实施例同时涉及一种位置识别装置，一种计算设备，以及一种计算机可读存储介质，以解决现有技术中存在的技术缺陷。
根据本说明书实施例的第一方面，提供了一种位置识别方法，所述方法应用于位置识别装置，所述装置包括：供电系统、取样电阻以及目标设备，其中，所述取样电阻串联在所述供电系统供电通路，所述目标设备安装在所述供电系统，所述方法包括：
所述目标设备采集所述供电系统中变化的电压信号，并对所述变化的电压信号进行处理，且将处理结果发送至服务器，其中,所述处理结果中包含电压变化节点；
所述目标设备根据所述服务器的反馈信息确定目标位置。
根据本说明书实施例的第二方面，提供了一种位置识别装置，包括供电系统、取样电阻、以及目标设备，其中，所述取样电阻串联在所述供电系统供电通路，所述目标设备安装在所述供电系统,并且，
所述目标设备，被配置为：采集所述供电系统中变化的电压信号，并对所述变化的电压信号进行处理，且将处理结果发送至服务器，其中,所述处理结果中包含电压变化节点；
所述目标设备，被配置为：根据所述服务器的反馈信息确定目标位置。
根据本说明书实施例的第三方面，提供了一种位置识别系统，包括货架供电导轨、电子价签以及服务器，其中，所述电子价签安装在所述货架供电导轨上，所述系统包括：
所述电子价签，被配置为采集所述货架供电导轨中变化的电压信号，并对所述电压信号进行处理，且将处理结果发送至服务器；
所述服务器，被配置为将所述处理结果与所述货架供电导轨对应的预设数组进行相似度比较确定反馈信息，并将所述反馈信息发送至所述电子价签，其中，所述反馈信息为从所述供电导轨中确定的目标供电导轨；
所述电子价签，还被配置为接收所述反馈信息，并基于所述反馈信息确定在所述货架供电导轨的位置。
根据本说明书实施例的第四方面，提供了一种计算设备，包括存储器、处理器；所述存储器用于存储计算机可执行指令，所述处理器用于执行所述计算机可执行指令，该计算机可执行指令被处理器执行时实现上述位置识别方法的步骤。
根据本说明书实施例的第五方面，提供了一种计算机可读存储介质，其存储有计算机可执行指令，该计算机可执行指令被处理器执行时实现上述位置识别方法的步骤。
根据本说明书实施例的第六方面，提供了一种计算机程序，其中，当所述计算机程序在计算机中执行时，令计算机执行上述位置识别方法的步骤。
本说明书实施例提供的位置识别方法及装置，其中，所述位置识别方法应用于位置识别装置，所述装置包括：供电系统、取样电阻以及目标设备，其中，所述取样电阻串联在所述供电系统供电通路，所述目标设备安装在所述供电系统，所述方法包括：所述目标设备采集所述供电系统中变化的电压信号，并对所述变化的电压信号进行处理，且将处理结果发送至服务器，其中,所述处理结果中包含电压变化节点；所述目标设备根据所述服务器的反馈信息确定目标位置。
具体的，所述位置识别方法通过将取样电阻串联在供电系统供电通路中，将目标设备安装在供电导轨上，使得目标设备实时采集供电系统中变化的电压信号，并对电压信号进行处理转换为服务器可识别的数字信号，实现服务器可以基于该数字信号确定目标设备的位置，实现了以低硬软件成本满足数字化需求的空间定位能力，解决了目标设备因位置调整而造成的影响定位功能的问题。
附图说明
图1是本说明书一个实施例提供的一种位置识别方法中供电系统的结构示意图；
图2是本说明书一个实施例提供的一种位置识别方法的流程图；
图3是本说明书一个实施例提供的一种位置识别方法的电压测量电路的示意图；
图4是本说明书一个实施例提供的一种位置识别方法的目标设备的工作电流波形图；
图5是本说明书一个实施例提供的一种位置识别方法的目标设备记录的电压值的波形图；
图6是本说明书一个实施例提供的一种位置识别装置的结构示意图；
图7是本说明书一个实施例提供的一种计算设备的结构框图。
具体实施方式
在下面的描述中阐述了很多具体细节以便于充分理解本说明书。但是本说明书能够以很多不同于在此描述的其它方式来实施，本领域技术人员可以在不违背本说明书内涵的情况下做类似推广，因此本说明书不受下面公开的具体实施的限制。
在本说明书一个或多个实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本说明书一个或多个实施例。在本说明书一个或多个实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本说明书一个或多个实施例中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本说明书一个或多个实施例中可能采用术语第一、第二等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本说明书一个或多个实施例范围的情况下，第一也可以被称为第二，类似地，第二也可以被称为第一。取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
首先，对本说明书一个或多个实施例涉及的名词术语进行解释。
电子价签：一种带有信息收发功能的电子显示装置，Electronic Shelf Label，简称ESL。电子价签主要应用于超市、便利店、药房等显示价目信息的电子类标签。电子价签一般放置在货架上，它是一种可替代传统纸质价目标签的电子显示装置。
供电导轨电子价签：使用导电轨道供电的电子价签系统。电子价签是一种带有信息收发功能的电子显示装置，主要应用于超市、便利店、药房等显示价目信息的电子类标签。放置在货架上，可替代传统纸质价目标签的电子显示装置，每一个电子货架标签通过有线或者无线网络与商场计算机数据库相连，并将最新的商品信息通过电子价签上的屏显示出来。
自动分组：通过信号处理方法将供电导轨上面的电子价签按照所在供电导轨进行分组的方法。自动分组是ESL自定位的基础，通过圈定某供电导轨上面具体的ESL，可以 进一步计算确定ESL在本供电导轨上面的相对位置关系，并进一步确定同一货架上面不同供电导轨及其安装在供电导轨上的ESL的相对位置关系，更进一步可以计算得到货架与货架之间的位置关系。
电流取样电阻：ESL安装在供电导轨上，由供电导轨供电，供电导轨通过取电头从货架背后的取电条取电。在取电通路上添加电流取样电阻，使本供电导轨负责供电的ESL工作电流发生变化时，整个供电导轨的负载电流变化在取样电阻上以电压的形式呈现出来。同时，取样电阻对货架供电系统其他区域的负载变化隔离在本供电导轨之外，起到一定衰减作用。
供电导轨电子价签系统：使用导电轨道为电子价签供电的系统。
ESL作为商超零售行业数字化的基础设施，已经在行业大批量复制，期望通过简单的低成本硬件和软件升级，增加ESL的空间定位相关基础数字化能力，实现零售场景ESL硬件的更多数字化价值挖掘。
蓝牙技术的ESL增加标准Beacon定位信号源功能，受限于ESL位置调整带来的位置不确定性，难以得到推广。
一种可实现方式中，对ESL的定位可以包括独立部署的定位Beacon信标系统和赋予特定位置ESL定位Beacon信标功能的定位系统两种，其中，独立部署的定位Beacon信标系统一般要求5米网格内部署至少1个Beacon信标，商超场景下，独立部署Beacon信标系统缺点包括：单独系统，独立造价，硬件成本较高；一次性使用，设备使用寿命有限，后期维保支出较高；安装位置受限现场条件，需要专业部署人员与工具系统；受限部署密度，一般采用蓝牙指纹技术来计算位置，需要现场采集指纹数据。
而赋予特定位置ESL定位Beacon信标功能的定位系统，需要选取固定在特征位置点的ESL，使用大容量电池作为标准Beacon广播信标，实现室内定位系统。该系统缺点包括：ESL位置可能会随SPT宽度及位置调整而更换位置，影响定位功能；现场环境变化导致的信号遮挡将对定位精度带来不确定性影响；赋予定位功能的ESL作为单独ESL种类，需要有独立的管理系统来管理。
基于此，本方案通过供电导轨设计和ESL软硬件设计，实现ESL供电导轨范围内的精准自定位能力，赋予ESL定位锚节点能力。
在本说明书中，提供了一种位置识别方法，本说明书一个或者多个实施例同时涉及一种位置识别装置，一种计算设备，一种计算机可读存储介质以及一种计算机程序，在下面的实施例中逐一进行详细说明。
参见图1，图1示出了根据本说明书一个实施例提供的一种位置识别方法中供电系统的结构示意图。
由图1可知，图1中的供电系统包括货架底层供电装置、供电导轨、取电头、取电电线、取样电阻以及导轨端头。其中，货架底层供电装置为整个供电系统供电，取电头 从货架底层供电装置取电，取电头通过取电电线与供电导轨的导轨端头连接，实现为供电导轨供电。而取样电阻放置在取电头、取电电线或者导轨端头等位置，串联接入电源正极供电通路即可。当ESL安装在供电导轨上时，由供电导轨的供电。而串联在供电导轨的正极通路上的取样电阻实现在ESL的工作电流发生变化时，将整个供电导轨的负载电流变化在取样电阻上以电压的形式呈现出来，使得ESL可以采集到供电导轨的电压信号。
其中，取样电阻又叫电流检测电阻，是指电流采样电阻和电压采样电阻。其中，电流采样串联电阻值小的电阻其作用在于电路中能够精准的采集电流，电压采样并联电阻值大的电阻。此类电阻，是按照产品使用以及功能作用来命名也因此工程师称采样电阻。本说明书中实施例中具体用到的是电流采样电阻，串联在电路中用于把电流转换为电压信号进行测量。
为了提高取样电路的准确性与取样能力，需要选取一个阻值合适的取样电阻。下面以一个实施例进行说明。
取样电阻阻值计算与功率选择：
供电导轨供电ESL的有效工作电压范围：6-27V
供电导轨供电ESL的工作电流：5-30mA
每条ESL供电导轨上安装ESL的数量范围：1-15只
供电导轨电源电压：12V
保证ESL正常工作的最大取样电阻可以通过如下方式确定:
(12-6)/(15*0.03)＝13.33欧姆
考虑到成本和散热问题，选择取样电阻功率等级：2W(4倍余量)
取样电阻最大实际功率：0.5W
考虑ESL的PSRR预留90％压差情况下取样电阻阻值：2.2欧姆(E24系列)
本说明书实施例对取样电阻的选择不做限定，实际应用中可以根据实际情况确定。
在实际应用中，为了使取样电阻的高电位端大于零，而低电位端等于零，因此取样电阻是要串联在供电系统的电源正极供电通路。具体实现方式如下所述：
取样电阻串联在供电系统的电源正极供电通路，其中，供电系统包括取电头、取电电线以及供电导轨。
参见图2，图2示出了根据本说明书一个实施例提供的一种位置识别方法的流程图，其中，所述方法应用于位置识别装置，所述装置包括：供电系统、取样电阻以及目标设备，其中，所述取样电阻串联在所述供电系统供电通路，所述目标设备安装在所述供电系统，具体的所述位置识别方法包括以下步骤。
步骤202：所述目标设备采集所述供电系统中变化的电压信号，并对所述变化的电压信号进行处理，且将处理结果发送至服务器，其中,所述处理结果中包含电压变化节点。
其中，目标设备可以理解为上述实施例的ESL；将ESL安装在供电系统的供电导轨上，ESL接收由供电导轨的供电，在取样电阻串联在供电通路的情况下，并且ESL的工作电流发生变化时，供电导轨上的电压信号也会发生变化。此时，ESL采集供电导轨上变化的电压信号，并对变化的电压信号进行处理后，将处理结果发送至服务器。
而服务器也叫做伺服器，是提供计算机服务的设备。服务器可分为文件服务器、数据库服务器、应用程序服务器、WEB服务器等，根据计算机的服务请求，并进行相应的处理，具备承担服务和保障服务的能力。本说明书实施例中的服务器可以理解为接收目标设备发送的变化的电压信号处理结果，通过该变化的电压信号处理结果对ESL的位置进行确定的服务器。即当接收到由ESL发送的变化的电压信号的处理结果时，服务器可以对处理结果进行分析，从而确定出ESL的具体位置。
实际应用中，目标设备采集供电系统中变化的电压信号，并对变化的电压信号进行处理，且将处理结果发送至服务器；服务器接收到该处理结果后，对该处理结果进行解析以确定目标设备的目标位置。
具体实施时，为了使取样电阻的高电位端大于零，低电位端等于零，因此取样电阻是要串联在供电系统的电源正极供电通路。具体实现方式如下所述：
所述取样电阻串联在所述供电系统的电源正极供电通路，其中，所述供电系统包括取电头、取电电线以及供电导轨；
所述目标设备安装在所述供电导轨。
即取样电阻串联在取电头、取电电线或供电导轨的电源正极供电通路，且目标设备安装在供电导轨上，由供电导轨为其进行供电。
此外，在供电系统处于供电状态时，当目标设备满足电压信号发生变化的条件的情况下，目标设备会实时采集供电系统的电压信号，以实现后续对实时采集供电系统中变化的电压信号进行处理。具体实现方式如下所述：
所述目标设备确定是否满足电压信号发生变化的条件，若是，则采集所述供电系统的电压信号，其中，所述供电系统的电压信号随所述目标设备的电流状态改变而变化。
其中，目标设备确定是否满足电压信号发生变化的条件包括多种情况，以下会对每种情况进行详细解释。
实际应用中，当ESL安装在供电导轨上时，接收供电导轨的供电，在ESL满足电压信号发生变化的条件的情况下，采集供电导轨上变化的电压信号。
其中，ESL硬件电路设计时，利用主控芯片自带ADC(模数转换器)测量供电导轨(ESL供电触片)的实时电压信号。实际应用中，为了使主控芯片上电压控制在安全工作电压内，可采用电阻分压方式将供电导轨电压分压至主控芯片工作电压以内(比如3.3V)，并添加过压保护二极管，保证主控芯片工作不受外界电压波动影响。具体实现方式如下所述：
所述目标设备采集所述供电系统中变化的电压信号，包括：
所述目标设备通过电压测量电路采集所述供电系统中变化的电压信号，其中，所述电压测量电路包括MCU-ADC，并且所述电压测量电路中设置有过压保护二极管。
其中，MCU可以理解为微处理器，ADC可以理解为模数转换器，电压测量电路可以理解为ESL供电导轨电压测量电路，通过硬件电路设计，利用主控芯片自带ADC，测量供电导轨的电压信号。
参见图3，图3示出了根据本说明书一个实施例提供的一种位置识别方法的电压测量电路的示意图。
图3中的电压测量电路可以理解为一种ESL供电导轨电压测量电路，包括分压电阻R1(300)、R2(310)，过压保护齐纳二极管(320)以及ESL的MCU-ADC输入接口(330)。
其中，分压电阻R1(300)、R2(310)对12V供电导轨电压(340)进行分压，保证R2(310)上的电压低于2V，并在分压电阻R2(310)上并联D1过压保护齐纳二极管(320)，确保MCU-ADC(330)输入电压低于3.3V。通过上述供电导轨电压测量电路，当供电导轨上的电压发生变化时，MCU-ADC(330)可实时采集电压信号变化状态。本说明书实施例对R1(300)、R2(310)以及过压保护齐纳二极管(320)的参数选择不做限定，实际应用中可以根据实际情况确定。
具体的，ESL通过供电导轨电压测量电路采集供电系统的电压信号的前提是当供电导轨上的电压发生变化，那么就产生了在哪种情况下ESL满足采集供电系统的电压信号的条件的问题，为了解决上述问题，本说明书实施例中有以下几种方式可以确定ESL是否满足电压信号发生变化的条件。
第一种情况为，ESL在接收到针对目标部件的操作指令的情况下，确定满足电压信号发生变化的条件。具体实现方式如下所述：
所述目标设备确定是否满足电压信号发生变化的条件，包括：
所述目标设备确定是否接收到针对目标部件的操作指令。
其中，目标部件为目标设备的内部部件，即针对目标设备的目标部件进行操作后，可以满足电压信号发生变化的部件。例如目标设备中耗能较大的部件、计算资源占用较高的部件等。
实际应用中，在对目标设备中耗能较大或者计算资源占用较高的部件进行任意操作的情况下，均会使得整个供电导轨中的电压发生变化。具体实现方式如下所述：
所述目标设备确定是否接收到针对目标部件的操作指令，包括：
所述目标设备确定目标部件为耗能大于等于预设耗能阈值的部件的情况下，接收对所述目标部件的关闭指令；或者
所述目标设备确定目标部件为处理器的情况下，接收对所述目标部件的计算资源降 低占用指令、对所述目标部件的运行主频降低指令，或者对所述目标部件的功耗降低指令。
其中，预设耗能阈值可以根据实际应用进行设置，本说明书实施例对此不作任何限定。
具体的，当目标设备中的目标部件的耗能大于等于预设耗能阈值的情况下，在接收到针对该目标部件的关闭指令的情况下，可以确定目标设备满足电压信号发生变化的条件。
而当目标部件为处理器的情况下，则在接收对目标部件的计算资源降低占用的指令、对目标部件的运行主频降低的指令或者对目标部件的功耗降低的指令的情况下，可以确定目标设备满足电压信号发生变化的条件。
例如，接收针对显示器部件的关闭指令，通过减少ESL的耗能实现控制ESL自身工作电流的变化，从而确定其满足电压信号发生变化的条件。或者
在目标部件为目标设备的处理器的情况下，目标设备接收到针对目标部件的计算资源占用指令、对目标部件的运行主频降低指令，或者对目标部件的功耗降低指令的情况下，通过减少ESL的计算资源占用、运行主频降低、功耗降低等控制ESL自身工作电流的变化，从而确定其满足电压信号发生变化的条件。
而上述判定目标设备是否满足电压信号发生变化的条件均属于软件方法，以下说明如何通过硬件方法控制ESL的工作电流的变化，从而确定目标设备满足电压信号发生变化的条件。具体实现方式如下所述：
上述对ESL的操作指令均属于软件方法，接下来说明硬件方法如何控制ESL的工作电流。
第二种情况为，ESL通过判断微控制单元的IO接口是否外接了对地泄流电阻，确定满足电压信号发生变化的条件。具体实现方式如下所述：
所述目标设备确定是否满足电压信号发生变化的条件，包括：
所述目标设备确定微控制单元的IO接口是否外接了对地泄流电阻。
具体的，目标设备通过判定微控制单元的IO接口是否外接了对地泄流电阻，可以确定ESL的工作电流是否发生了改变，从而确定电压信号发生变化。
其中，微控制单元可以理解为目标设备的中央处理器。在本说明书一实施例中，微控制单元可以是ESL的MCU。
具体的，可通过在ESL的MCU的IO接口外接一个对地泄流电阻，控制IO接口工作在高电平，此时，IO接口最大工作电流限度(比如20mA)内，实现ESL自身电流的控制，从而确定满足电压信号发生变化的条件。
第三种，还可以通过确定是否达到预设的电压信号采集节点，确定满足电压信号发生变化的条件。具体实现方式如下所述：
所述目标设备确定是否满足电压信号发生变化的条件，包括:
所述目标设备确定是否达到预设的电压信号采集节点，其中，所述电压信号采集节点由所述目标设备在预设时间内根据媒体存取控制位置确定。
其中，预设的电压信号采集节点由目标设备在预设时间内根据媒体存取控制位址确定，而预设时间可以根据实际应用进行设置，在此不再赘述。
具体实施时，目标设备的媒体存取控制位址为ESL的MAC地址，可以在ESL上电1分钟内按照某种随机时间段选区方法，控制自身工作在特定工作电流状态，具体实现方式如下所述：
根据已知ESL工作电流在不同状态下的数据，比如A全功率状态电流为30mA，B黑屏并且无通信状态电流为5mA，在某种确定的随机时间片内控制ESL工作在A工作状态，其他时间工作在B工作状态。可以以ESL的MAC地址为随机方法，MAC地址的最后一个字节十进制数为X，配置ESL在启动完成后进入A工作状态，在X/5秒进入B工作状态，在X/5+8秒返回A状态，这样每个ESL会在启动后60秒内进入一次B黑屏并且无通信状态。
参考图4，图4示出了根据本说明书一个实施例提供的一种位置识别方法的目标设备的工作电流波形图。
图4示出了以MAC地址最后字节为0x1E为例的ESL工作电流波形图，其中，根据上述方案，MAC地址的最后一个字节十进制数为30，配置ESL在启动完成后进入B工作状态，在6秒进入B工作状态，在14秒返回A状态，这样每个ESL会在启动后60秒内进入一次B黑屏并且无通信状态。
ESL按照一定随机方法随机进入不同工作状态的状态电流可以按照实际情况调整，进入不同工作状态的次数可以按照需求调整。进入不同工作状态的持续时间长度可以按照需求调整，并可以进一步随机化。
第四种，还可以通过检测ESL是否被安装至供电系统安装或者是否被从供电系统拆除来确定目标设备的是否满足电压信号发生变化的条件。具体实现方式如下所述：
所述目标设备确定是否满足电压信号发生变化的条件，包括：
所述目标设备确定是否被安装至所述供电系统或者是否被从所述供电系统拆除。
例如，当ESL被用户从供电导轨上拆除或被用户安装在供电导轨上时，可由同一供电导轨上的其他ESL来确定确定目标设备的是否满足电压信号发生变化的条件。
本说明书一实施例中，当ESL被安装至某一供电导轨或者从某一供电导轨被拆除，会导致同一供电导轨上其他ESL的工作电流发生变化，从而满足了电压信号发生变化的条件。此时，由同一供电导轨上其他的ESL来确定供电导轨上的电压信号发生变化。
此外，在通过上述方式确定目标设备满足电压信号发生变化的条件之后，可以通过预设时间段内按照预设的采样率的方法采集供电导轨的电压信号。具体实现方式如下所 述：
所述目标设备采集所述供电系统中变化的电压信号，包括：
所述目标设备在预设时间段内按照预设采样率采集所述供电系统中变化的电压信号。
其中，预设时间段可以理解为ESL自启动完成至用户设置的时间的时间段；预设采样率可以理解为ESL采集电压信号的频率。
例如，ESL自启动完成至60秒的时间段内，ESL按照100Hz的采样率采集供电导轨的电压状态，则每个ESL可采集到6000个采样点的电压信号。本说明书实施例对预设时间段、采样率的选择不做限定，具体应用可以根据实际需求设定。
在所述目标设备满足了电压信号发生变化的条件的情况下，对所述供电系统中变化的电压信号进行采集。在进行采集之后，目标设备需要对采集到的变化的电压信号进行处理，以实现将处理后的信号发送至服务器，进行目标设备的位置的确定。具体变化的电压信号处理可以通过如下方式实现：
所述对所述变化的电压信号进行处理，包括：
所述目标设备对所述电压信号进行滤波处理，得到滤波后的电压信号序列，并将所述电压信号序列转换为二维数组。
具体的，滤波处理可以理解为对采集到的电压信号中的带有的噪声信号进行过滤。
实际应用中，当ESL自启动完成至60秒的时间段内，ESL按照100Hz的采样率采集供电导轨电压状态，每个ESL总计采集到6000个采样点的电压信号Yn。在采集到电压信号Yn之后，使用中值滤波方法，以11点为窗口，对采集到的6000个个采样点的电压信号Yn进行滤波处理。根据供电导轨合理脉冲电压台阶：DV＝2.2欧姆*0.03A*(2欧姆/12欧姆)＝0.011V，对电压信号Yn求导得到Kn，设定边沿检测阈值Gate＝11mV(对应25mA)，得到序列STEPn。
在根据上述方案计算得出电压信号的序列STEPn之后，由于实际采样计算得到的数据可能存在误差，因此需要对数据进行归一化处理，以此实现去除边沿检测产生的时间噪声。
而归一化处理的具体实施方式为：以第一个边沿点(比如6)为起点，使用2秒和8秒为归一化整除算子，实现数据的去噪处理，提高了数据的准确性。
具体的，在根据上述对采集的数据进行去噪处理之后，需要将其发送至服务器。但是考虑到ESL是通过无线发送，即发送数据的带宽有限，因此需要对数据进行压缩处理。
本说明书一实施例中，压缩处理的具体实施方式为：提取特征压缩序列STEPn，仅记录信号发生跳变的时间点及跳变前后的电压值，使用二维数组IDATA来记录序列STEPn。
参见图5，图5示出了根据本说明书一个实施例提供的一种位置识别方法的目标设 备记录的电压值的波形图。
由图5可知，图5示出了多个ESL记录信号发生跳变的时间点及跳变前后的电压值的波形图，则根据图5给出的实施例中的序列STEPn，其二维数组为：
Figure PCTCN2022118413-appb-000001
其中，第一行记录电流值，第二行记录产生变化的时间点。
在通过对所述电压信号进行滤波、去噪处理之后，提高了采样数据的准确性，并且在进行压缩处理后，提高了发送采样数据的传输速度。
在对采集到的电压信号进行处理完成后，需要将其发送至服务器，具体实现方式如下所述：
所述将处理结果发送至服务器，包括：
所述目标设备通过蓝牙将所述二维数组发送至服务器，接收所述服务器将所述二维数组与所述供电导轨对应的预设数组进行相似度比较后确定的所述反馈信息，其中，所述反馈信息为从所述供电导轨中确定的目标供电导轨。
具体实施实时，目标设备通过蓝牙或者其他的方式将二维数组发送至服务器，服务器获取到该二维数组(IDATA)后，根据电压变化节点对该二维数组进行归类处理获得不同类型的数组集合，再将各个数组集合与预设的位置信息进行比对，确定所述目标设备的位置。
例如，服务器接收到ESL通过蓝牙采集到的IDATA信息后，以跳变次数先对ESL的信号进行归类处理，然后对相同跳变次数的ESL信号，采用相关计算，比对各ESL的IDATA信息，将相同ESL信号的ESL分类到同一根供电导轨上面。
此外，当每个ESL产生一次跳变难以将所有ESL归类到对应供电导轨上面时，可以增加跳变次数，使跳变信息包含的特征更加丰富，降低归类难度。
实际应用场景中，云端服务器中预先存储了所有供电导轨上的电压信号数组，当云端服务器接收到ESL通过蓝牙采集到的IDATA信息后，将采集到的IDATA信息与数据库中预先存储的每条供电导轨的电压信号数组进行相似度比对，确定出与ESL采集的IDATA信息相似度最高的电压信号数组对应的供电导轨，并将该供电导轨信息(如供电导轨位置)作为反馈信息发送至ESL。
步骤204：所述目标设备根据所述服务器的反馈信息确定目标位置。
具体的，在服务器对处理结果进行归类之后，将反馈信息(即ESL的位置信息)发送至目标设备，从而确定出目标设备的位置。
本说明书实施例提供的位置识别方法，通过将取样电阻串联在供电系统供电通路中，将目标设备安装在供电导轨上，使该供电导轨上的任意目标设备电流变化信息体现在整个供电导轨的电压变化信息，并采集供电系统的电压信号，对电压信号进行处理，且将 处理结果发送至服务器；服务器获取到所述处理结果后，确定目标设备的位置。实现了以低硬软件成本满足数字化需求的空间定位能力，解决了目标设备因位置调整而造成的影响定位功能的问题，解决了因现场环境变化导致的信号遮挡对定位精度带来的不确定性影响的问题，缩减门店定位能力建设的设备投入及维保投入，借助供电导轨ESL部署密度，实现ESL供电导轨范围内的精准自定位能力，保证ESL发生位置变动时及时更新ESL位置，保证定位功能的常态维护。
此外，本说明书实施例提供的位置识别方法应用于具体的商超门店场景中，可以借助现有供电导轨供电ESL系统能力，缩减门店定位能力建设的设备投入及维保投入；借助供电导轨ESL部署密度，实现高精度室内定；极少硬件成本增加(供电导轨取样电阻和ESL分压电压检测电路)，赋能ESL自定位能力，保证ESL发生位置变动时及时更新ESL位置，保证定位功能的常态维护。
此外，本说明书实施例提供的位置识别方法可以应用于商超门店场景中，在该场景中可以使用ESL的自定位能力，当确定出每个ESL的各自位置后，可以将每个ESL用作于基站，以达到对工作人员和/或顾客的定位功能。
实际应用场景中，在确定出商超里货架上所有ESL的各自位置后，当指定工作人员去A区域的A货架上进行补货任务时，通过工作人员的终端接收A区域中的ESL发出的信号，可以确定工作人员已进入A区域，从而判断出工作人员的具体位置。具体的，A货架上的供电导轨是已知的，那么通过在确定发出信号的ESL属于该A货架上的供电导轨的情况下，则可以确定工作人员到大了A货架区域。通过上述实施例可以借助已完成自定位的ESL对工作人员的进行定位功能，以实现管理人员对工作人员的工作监督，方便管理人员的日常管理，提高工作效率。
另一实际应用场景中，在确定出商超里货架上所有ESL的各自位置后，当顾客进入商超进行购物时，在顾客授权的情况下，可通过顾客终端预先下载好的第三方软件接收商超中ESL发送的信号，确定出顾客在商超中的浏览路线。通过上述实施例可以借助已完成自定位的ESL对顾客的进行定位功能，可以了解到每个顾客的常浏览路线，从而获取顾客的喜爱商品，为每个用户提供喜爱商品的上新、打折提醒，以实现为顾客提供个性化的服务。
与上述方法实施例相对应，本说明书一实施例还提供一种位置识别系统，包括货架供电导轨、电子价签以及服务器，其中，所述电子价签安装在所述货架供电导轨上，所述系统包括：
所述电子价签，被配置为采集所述货架供电导轨中变化的电压信号，并对所述电压信号进行处理，且将处理结果发送至服务器；
具体的，电子价签被安装在货架供电导轨上，接收货架供电导轨的供电，当货架供电导轨的电压信号发生变化时，采集货架供电导轨的电压信号并进行滤波、去噪和压缩 处理，将压缩后的电压信号以数组的形式发送至服务器。
所述服务器，被配置为将所述处理结果与所述货架供电导轨对应的预设数组进行相似度比较确定反馈信息，并将所述反馈信息发送至所述电子价签，其中，所述反馈信息为从所述供电导轨中确定的目标供电导轨；
具体的，服务器在接收到电子价签发送的数组数据后，将其与服务器本地预设的数组数据进行相似度比较。当比较结果为相似度较高时，确定该电子价签所在货架供电导轨的具体位置并生成反馈信息发送至电子价签。
所述电子价签，还被配置为接收所述反馈信息，并基于所述反馈信息确定在所述货架供电导轨的位置。
具体的，电子价签接收到服务器返回的反馈信息之后，可以从反馈信息中获取到所在货架供电导轨的位置，从而确定出自身的具体位置。
本说明书实施例提供的位置识别系统，通过将电子价签安装在所述货架供电导轨上，使得电子价签可以采集到货架供电导轨变化的电压信号，对电压信号进行处理后，将处理结果发送至服务器；服务器获取到处理结果后，确定出电子价签所在货架供电导轨的具体位置，将该具体位置作为反馈信号发送至电子价签；电子价签接收反馈信号从而确定自身所在货架供电导轨的具体位置。实现了以低硬软件成本满足数字化需求的空间自定位能力，解决了目标设备因位置调整而造成的影响定位功能的问题，解决了因现场环境变化导致的信号遮挡对定位精度带来的不确定性影响的问题。
参见图6，与上述方法实施例相对应，图6示出了根据本说明书一个实施例提供的一种位置识别装置的结构示意图，该装置包括供电系统602、取样电阻604、以及目标设备606，其中，所述取样电阻604串联在所述供电系统602供电通路，所述目标设备606安装在所述供电系统602,并且，
所述目标设备606，被配置为：采集所述供电系统602中变化的电压信号，并对所述变化的电压信号进行处理，且将处理结果发送至服务器；
所述目标设备606，被配置为：根据所述服务器的反馈信息确定目标位置。
可选地，所述取样电阻604串联在所述供电系统602的电源正极供电通路，其中，所述供电系统602包括取电头、取电电线以及供电导轨；
所述目标设备606安装在所述供电导轨。
可选地，所述目标设备606，被配置为：确定是否满足电压信号发生变化的条件，若是，则采集所述供电系统602的电压信号，其中，所述供电系统602的电压信号随所述目标设备606的电流状态改变而变化。
可选地，所述目标设备606，被配置为：通过电压测量电路采集所述供电系统602中变化的电压信号，其中，所述电压测量电路包括MCU-ADC，并且所述电压测量电路中设置有过压保护二极管。
可选地，所述目标设备606，被配置为：确定是否接收到针对目标部件的操作指令。
可选地，所述目标设备606，被配置为：确定目标部件为耗能大于等于预设耗能阈值的部件的情况下，接收对所述目标部件的关闭指令；或者
所述目标设备606，被配置为：确定目标部件为处理器的情况下，接收对所述目标部件的计算资源降低占用指令、对所述目标部件的运行主频降低指令，或者对所述目标部件的功耗降低指令。
可选地，所述目标设备606，被配置为：确定微控制单元的IO接口是否外接了对地泄流电阻。
可选地，所述目标设备606，被配置为：确定是否达到预设的电压信号采集节点，其中，所述电压信号采集节点由所述目标设备606在预设时间内根据媒体存取控制位置确定。
可选地，所述目标设备606，被配置为：确定是否被安装至所述供电系统602或者是否被从所述供电系统602拆除。
可选地，所述目标设备606，被配置为：在预设时间段内按照预设采样率采集所述供电系统602中变化的电压信号。
可选地，所述目标设备606，被配置为：对所述电压信号进行滤波处理，得到滤波后的电压信号序列，并将所述电压信号序列转换为二维数组。
可选地，所述目标设备606，被配置为：通过蓝牙将所述二维数组发送至服务器，接收所述服务器将所述二维数组与所述供电导轨对应的预设数组进行相似度比较后确定的所述反馈信息，其中，所述反馈信息为从所述供电导轨中确定的目标供电导轨。
本说明书实施例提供的所述位置识别装置通过将取样电阻604串联在供电系统602供电通路中，将目标设备606安装在供电导轨上，使得目标设备606实时采集供电系统602中变化的电压信号，并对电压信号进行处理转换为服务器可识别的数字信号，实现服务器可以基于该数字信号确定目标设备606的位置，实现了以低硬软件成本满足数字化需求的空间定位能力，解决了目标设备606因位置调整而造成的影响定位功能的问题。
上述为本实施例的一种位置识别装置的示意性方案。需要说明的是，该位置识别装置的技术方案与上述的位置识别方法的技术方案属于同一构思，位置识别装置的技术方案未详细描述的细节内容，均可以参见上述位置识别方法的技术方案的描述。
图7示出了根据本说明书一个实施例提供的一种计算设备700的结构框图。该计算设备700的部件包括但不限于存储器710和处理器720。处理器720与存储器710通过总线730相连接，数据库750用于保存数据。
计算设备700还包括接入设备740，接入设备740使得计算设备700能够经由一个或多个网络760通信。这些网络的示例包括公用交换电话网(PSTN)、局域网(LAN)、广域网(WAN)、个域网(PAN)或诸如因特网的通信网络的组合。接入设备740可以 包括有线或无线的任何类型的网络接口(例如，网络接口卡(NIC))中的一个或多个，诸如IEEE802.11无线局域网(WLAN)无线接口、全球微波互联接入(Wi-MAX)接口、以太网接口、通用串行总线(USB)接口、蜂窝网络接口、蓝牙接口、近场通信(NFC)接口，等等。
在本说明书的一个实施例中，计算设备700的上述部件以及图7中未示出的其他部件也可以彼此相连接，例如通过总线。应当理解，图7所示的计算设备结构框图仅仅是出于示例的目的，而不是对本说明书范围的限制。本领域技术人员可以根据需要，增添或替换其他部件。
计算设备700可以是任何类型的静止或移动计算设备，包括移动计算机或移动计算设备(例如，平板计算机、个人数字助理、膝上型计算机、笔记本计算机、上网本等)、移动电话(例如，智能手机)、可佩戴的计算设备(例如，智能手表、智能眼镜等)或其他类型的移动设备，或者诸如台式计算机或PC的静止计算设备。计算设备700还可以是移动式或静止式的服务器。
其中，处理器720用于执行如下计算机可执行指令，该指令被处理器执行时实现如上述位置识别方法的步骤。
上述为本实施例的一种计算设备的示意性方案。需要说明的是，该计算设备的技术方案与上述的位置识别方法的技术方案属于同一构思，计算设备的技术方案未详细描述的细节内容，均可以参见上述位置识别方法的技术方案的描述。
本说明书一实施例还提供一种计算机可读存储介质，其存储有计算机可执行指令，该计算机可执行指令被处理器执行时以用于实现如前所述位置识别方法的步骤。
上述为本实施例的一种计算机可读存储介质的示意性方案。需要说明的是，该存储介质的技术方案与上述的位置识别方法的技术方案属于同一构思，存储介质的技术方案未详细描述的细节内容，均可以参见上述位置识别方法的技术方案的描述。
上述对本说明书特定实施例进行了描述。其它实施例在所附权利要求书的范围内。在一些情况下，在权利要求书中记载的动作或步骤可以按照不同于实施例中的顺序来执行并且仍然可以实现期望的结果。另外，在附图中描绘的过程不一定要求示出的特定顺序或者连续顺序才能实现期望的结果。在某些实施方式中，多任务处理和并行处理也是可以的或者可能是有利的。
所述计算机指令包括计算机程序代码，所述计算机程序代码可以为源代码形式、对象代码形式、可执行文件或某些中间形式等。所述计算机可读介质可以包括：能够携带所述计算机程序代码的任何实体或装置、记录介质、U盘、移动硬盘、磁碟、光盘、计算机存储器、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、电载波信号、电信信号以及软件分发介质等。需要说明的是，所述计算机可读介质包含的内容可以根据司法管辖区内立法和专利实践的要求进行适当的增 减，例如在某些司法管辖区，根据立法和专利实践，计算机可读介质不包括电载波信号和电信信号。
需要说明的是，对于前述的各方法实施例，为了简便描述，故将其都表述为一系列的动作组合，但是本领域技术人员应该知悉，本说明书实施例并不受所描述的动作顺序的限制，因为依据本说明书实施例，某些步骤可以采用其它顺序或者同时进行。其次，本领域技术人员也应该知悉，说明书中所描述的实施例均属于优选实施例，所涉及的动作和模块并不一定都是本说明书实施例所必须的。
在上述实施例中，对各个实施例的描述都各有侧重，某个实施例中没有详述的部分，可以参见其它实施例的相关描述。
以上公开的本说明书优选实施例只是用于帮助阐述本说明书。可选实施例并没有详尽叙述所有的细节，也不限制该发明仅为所述的具体实施方式。显然，根据本说明书实施例的内容，可作很多的修改和变化。本说明书选取并具体描述这些实施例，是为了更好地解释本说明书实施例的原理和实际应用，从而使所属技术领域技术人员能很好地理解和利用本说明书。本说明书仅受权利要求书及其全部范围和等效物的限制。

Claims (12)

  1. 一种位置识别方法，所述方法应用于位置识别装置，所述装置包括：供电系统、取样电阻以及目标设备，其中，所述取样电阻串联在所述供电系统供电通路，所述目标设备安装在所述供电系统，所述方法包括：
    所述目标设备采集所述供电系统中变化的电压信号，并对所述变化的电压信号进行处理，且将处理结果发送至服务器；
    所述目标设备根据所述服务器的反馈信息确定目标位置。
  2. 根据权利要求1所述的位置识别方法，所述取样电阻串联在所述供电系统供电通路，所述目标设备安装在所述供电系统，包括：
    所述取样电阻串联在所述供电系统的电源正极供电通路，其中，所述供电系统包括取电头、取电电线以及供电导轨；
    所述目标设备安装在所述供电导轨。
  3. 根据权利要求1所述的位置识别方法，所述目标设备采集所述供电系统中变化的电压信号，包括：
    所述目标设备确定是否满足电压信号发生变化的条件，若是，则采集所述供电系统的电压信号，其中，所述供电系统的电压信号随所述目标设备的电流状态改变而变化。
  4. 根据权利要求3所述的位置识别方法，所述目标设备确定是否满足电压信号发生变化的条件，包括：
    所述目标设备确定是否接收到针对目标部件的操作指令。
  5. 根据权利要求4所述的位置识别方法，所述目标设备确定是否接收到针对目标部件的操作指令，包括：
    所述目标设备确定目标部件为耗能大于等于预设耗能阈值的部件的情况下，接收对所述目标部件的关闭指令；或者
    所述目标设备确定目标部件为处理器的情况下，接收对所述目标部件的计算资源降低占用指令、对所述目标部件的运行主频降低指令，或者对所述目标部件的功耗降低指令。
  6. 根据权利要求3所述的位置识别方法，所述目标设备确定是否满足电压信号发生变化的条件，包括:
    所述目标设备确定是否达到预设的电压信号采集节点，其中，所述电压信号采集节点由所述目标设备在预设时间内根据媒体存取控制位置确定。
  7. 根据权利要求3所述的位置识别方法，所述目标设备确定是否满足电压信号发生变化的条件，包括：
    所述目标设备确定是否被安装至所述供电系统或者是否被从所述供电系统拆除。
  8. 根据权利要求2所述的位置识别方法，所述对所述变化的电压信号进行处理，且将处理结果发送至服务器，包括：
    所述目标设备对所述电压信号进行滤波处理，得到滤波后的电压信号序列，并将所述电压信号序列转换为二维数组；
    所述目标设备通过蓝牙将所述二维数组发送至服务器，接收所述服务器将所述二维数组与所述供电导轨对应的预设数组进行相似度比较后确定的所述反馈信息，其中，所述反馈信息为从所述供电导轨中确定的目标供电导轨。
  9. 一种位置识别装置，包括供电系统、取样电阻、以及目标设备，其中，所述取样电阻串联在所述供电系统供电通路，所述目标设备安装在所述供电系统,并且，
    所述目标设备，被配置为：采集所述供电系统中变化的电压信号，并对所述变化的电压信号进行处理，且将处理结果发送至服务器；
    所述目标设备，被配置为：根据所述服务器的反馈信息确定目标位置。
  10. 一种位置识别系统，包括货架供电导轨、电子价签以及服务器，其中，所述电子价签安装在所述货架供电导轨上，所述系统包括：
    所述电子价签，被配置为采集所述货架供电导轨中变化的电压信号，并对所述电压信号进行处理，且将处理结果发送至服务器；
    所述服务器，被配置为将所述处理结果与所述货架供电导轨对应的预设数组进行相似度比较确定反馈信息，并将所述反馈信息发送至所述电子价签，其中，所述反馈信息为从所述供电导轨中确定的目标供电导轨；
    所述电子价签，还被配置为接收所述反馈信息，并基于所述反馈信息确定在所述货架供电导轨的位置。
  11. 一种计算设备，包括：
    存储器和处理器；
    所述存储器用于存储计算机可执行指令，所述处理器用于执行所述计算机可执行指令，该计算机可执行指令被处理器执行时实现权利要求1至8任意一项所述位置识别方法的步骤。
  12. 一种计算机可读存储介质，其存储有计算机可执行指令，该计算机可执行指令被处理器执行时实现权利要求1至8任意一项所述位置识别方法的步骤。
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