A combined timing calibration method for calibrating a data link
Patent Information
- Application Number
- CN202510419217.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2045-04-03
AI Technical Summary
而每次标校数据链进行标校试验时，只能完成1种子周期时序长度类型的验证，一次试验只能校对一种时序模式，而且每次试验都要花费巨大的时间成本及经济成本，极大降低产品的研制生产效率
[0015] According to the present invention, a communication cycle of the calibration data link can contain sub-cycles of multiple timing length types, so that when the calibration data link performs calibration tests, it can support the verification of any timing length type of sub-cycles required at one time, or it can verify all timing length type of sub-cycles at one time.
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Figure CN120433820B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wireless communication, and more specifically, to a combined timing calibration method for calibrating data links. Background Technology
[0002] When controlling low-altitude equipment such as drones via ground equipment, a product data link is deployed on the low-altitude equipment. The ground equipment communicates and interacts with the product data link to achieve ground control of the low-altitude equipment. During communication, time errors occur when the ground equipment receives signals. To calibrate these time errors, a calibration data link needs to be developed concurrently with the product data link. This calibration data link is used to simulate the product data link's calibration of the ground equipment's time accuracy. To ensure the accuracy of the calibration results, the product data link and the calibration data link are technically identical. Generally, product data links include communication protocols with multiple timing modes, and calibration data links also include multiple timing modes.
[0003] In the case of ground-controlled drone swarms, the relationship between ground equipment and product data links is one-to-many. Therefore, a communication cycle of the ground equipment is divided into multiple sub-cycles, each corresponding to a working cycle of a product data link. Typically, a product data link contains communication protocols with multiple timing modes (sub-cycles of various timing lengths). Its timing schematic diagram is shown below. Figure 3 As shown, assuming a ground equipment communication cycle is 10 seconds, divided into 10 sub-cycles (each sub-cycle has a timing length of 1 second), each sub-cycle communicates with 10 different product data links. The calibration data link simulates communication between different product data links and the ground equipment in each sub-cycle. In traditional calibration data links, the timing length type of each sub-cycle within the communication cycle is the same. However, each calibration test of the calibration data link can only verify the timing length type of one sub-cycle, and only one timing mode can be calibrated per test. Moreover, each test incurs significant time and economic costs, greatly reducing the efficiency of product development and production.
[0004] In view of the current status of calibration tests, there is a need for a calibration data link solution that can complete the verification of all timing modes through a single calibration test. Summary of the Invention
[0005] To achieve the above objectives, this application provides a combined timing calibration method for calibrating data links, used for calibrating data links of simulated product data links and ground equipment, comprising the following steps:
[0006] In the calibration data link, a permutation and combination timing sequence is defined, with each timing sequence corresponding to a channel, used to simulate a product data link one-to-one. The permutation and combination timing sequence is composed of a combination of timing sequences of various length types. The length type corresponds to the sub-cycle of communication between the ground equipment and a product data link. The total length of n timing sequences constitutes the communication cycle T between the ground equipment and n product data links.
[0007] The calibration data link receives calibration parameter information packets sent by ground equipment; each channel performs parameter setting for its corresponding channel.
[0008] Each channel of the calibration data link performs a status self-check, generates calibration parameter information for transmission back to the ground equipment;
[0009] After receiving the feedback information from the calibration data link, the ground equipment judges the calibration results and determines whether to start the operation.
[0010] When combining multiple length types of timing sequences to form permutation and combination timing sequences: Multiple length types of timing sequences are combined according to requirements, with one channel corresponding to one timing sequence and simulating one product data link. The permutation and combination timing sequence contains n channels, and these n channels can be arbitrarily combined to form a combined timing sequence. The timing sequence length type corresponds to the actual time length, communication type, or modulation method.
[0011] The parameters to be set include: the number of sub-cycles, the timing length of each sub-cycle, and the operating parameters of each sub-cycle.
[0012] Furthermore, the calibration parameter information packet includes: frame header, number of channel types, parameters of the first to nth channels, reserved information, and check bytes;
[0013] The returned calibration parameter information includes: frame header, self-test information, parameter setting identifier, number of channel types, parameters of the first to nth channels, reserved information, and check bytes; the self-test information includes normal and abnormal; the parameter setting identifier includes: parameter setting successful and parameter setting abnormal.
[0014] Furthermore, the ground equipment's determination of the calibration result refers to: obtaining the feedback information from the calibration data link and determining whether all channels have completed parameter setting; if all channels have completed parameter setting, it is determined that work can be started. After the ground equipment determines that work can be started, the calibration data link communicates with the ground equipment.
[0015] According to the present invention, a communication cycle of the calibration data link can contain sub-cycles of multiple timing length types, so that when the calibration data link performs calibration tests, it can support the verification of any timing length type of sub-cycles required at one time, or it can verify all timing length type of sub-cycles at one time. Attached Figure Description
[0016] Figure 1This is a flowchart illustrating the steps of a combined timing calibration method for calibrating a data link according to an embodiment of the present invention.
[0017] Figure 2 This is a schematic diagram of the structure of the calibration data link combination timing calibration provided in the embodiment of the present invention;
[0018] Figure 3 This is a schematic diagram of the communication cycle timing design;
[0019] Figure 4 This is a schematic diagram of permutation and combination timing provided according to an embodiment of the present invention;
[0020] Figure 5 This is a schematic diagram of the parameter setting for each channel according to an embodiment of the present invention. Detailed Implementation
[0021] This invention provides a permutation and combination timing scheme that allows a communication cycle to contain multiple arbitrary types of sub-cycles, and a single calibration test to verify all timing modes.
[0022] The specific implementation of the present invention will now be described in detail with reference to the accompanying drawings.
[0023] First, deploy the calibration data chain, and allocate multiple channels within the calibration data chain, such as... Figure 2 As shown, the parameters of each channel in the calibration data chain are consistent with those of the product data chain to achieve a one-to-one simulation of the product data chain.
[0024] The combined timing calibration method for calibration data chains provided by this invention is as follows: Figure 1 As shown, it includes the following steps:
[0025] Step S100: Define permutation and combination timing in the calibration data chain, wherein the timing corresponds to the channel and is used to simulate the product data chain one-to-one;
[0026] like Figure 4As shown, the permutation and combination timing sequence is composed of multiple length types of timing sequences. The length type corresponds to a sub-cycle of communication between the ground equipment and a product data link. The timing sequence length type corresponds to the actual time length, communication type, or modulation method. For example, when corresponding to an actual long time length, it includes multiple types such as 1s, 2s, 3s, and 4s, with sub-cycle types corresponding to 1s (0x55), 2s (0xAA), 3s (0xA5), and 4s (0x5A), respectively. When multiple length types of timing sequences are combined to form the permutation and combination timing sequence: multiple length types of timing sequences are combined according to requirements, with one channel of the calibration data link corresponding to one timing sequence and simulating one product data link. At this time, the permutation and combination timing sequence contains n channels, and the n timing sequences can be arbitrarily combined to form a combined timing sequence; the total length of the n timing sequences constitutes the communication cycle T between the ground equipment and the n product data links.
[0027] The permutation and combination timing needs to be defined before the ground equipment communicates with the product data link. Only after the definition is completed can the calibration simulation of the calibration data link and the ground equipment be used to calibrate the product data link and the ground equipment.
[0028] Step S110: The calibration data link receives the calibration parameter information packet sent by the ground equipment; each channel performs the parameter setting for the corresponding channel;
[0029] During the calibration process with ground equipment, the permutation and combination timing sequence operates in sub-cycles of varying lengths. The timing length type, communication type, or modulation method of each sub-cycle can be the same or different. The timing length and communication conditions corresponding to each sub-cycle can be configured through parameter settings.
[0030] The parameter setting configuration can reflect the needs of the ground equipment. Since the timing of various length types is combined according to the requirements, before each operation, the calibration data link needs to set parameters according to the requirements sent by the ground equipment, that is, to receive the calibration parameter information packet. The received calibration parameter information packet includes the channel parameters of each sub-cycle contained in the current communication cycle. The parameter setting content includes information such as the number of sub-cycles, the timing length type of each sub-cycle, and the working parameters of each sub-cycle.
[0031] The contents of the calibration parameter information packet received by the calibration data link are shown in Table 1, including: frame header, number of channel types, parameters of the first to nth channels, reserved information and check bytes;
[0032] Table 1
[0033]
[0034]
[0035] Each channel of the calibration data link is configured with parameters according to the contents of the calibration parameter information packet. The configured parameters include: the number of sub-cycles, the timing length of each sub-cycle, and the working parameters of each sub-cycle.
[0036] After the parameters are set, the calibration software for the data link needs to determine the number of target channels corresponding to each timing length type in the combined timing sequence. For example, if the number of target channels is 'a' for 1s, 'b' for 2s, 'c' for 3s, and 'd' for 4s, then the working period of the combined timing sequence is T (ms) (T = 1 × a + 2 × b + 3 × c + 4 × d, hereinafter referred to as working period T). The number of target channels corresponding to each timing length type, i.e., a, b, c, and d, can all be different. If the provided combined timing sequence is as follows... Figure 4 As shown, the parameters for each target channel are set as follows: Figure 5 As shown.
[0037] Step S120: After completing the parameter setting, each channel of the calibration data link performs a status self-check, generates calibration parameter information for transmission back to the ground equipment;
[0038] The specific content of the returned calibration parameter information is shown in Table 2, including: frame header, self-test information, parameter setting identifier, number of channel types, parameters of the 1st to nth channels, reserved information, and checksum bytes; the self-test information includes normal and abnormal; the parameter setting identifier includes: parameter setting successful and parameter setting abnormal. To determine whether a parameter is successfully or abnormally set, the status can only be determined and written to the parameter setting identifier after obtaining the same result multiple times consecutively.
[0039] Table 2
[0040]
[0041] Step S130: After receiving the feedback information from the calibration data link, the ground equipment judges the calibration result and determines whether to start the operation.
[0042] When judging the calibration results: obtain the feedback information from the calibration data chain, and determine whether all channels have completed parameter setting, i.e., the parameter setting indicator is "parameters set is complete". If all channels have completed parameter setting, it is determined that the operation can be started. Since in step S120, within one working cycle T, the n channels of the calibration data chain simulate n product data chains respectively, within one working cycle T, a single calibration of one type, multiple types, and all types of timing lengths is verified by permutation and combination timing sequences, which greatly reduces the experimental and time costs.
[0043] Once the startup is confirmed, ground equipment can communicate with each other.
[0044] In this invention, the design concept of permutation and combination timing is used to make the calibration data link contain sub-cycles of multiple timing length types within one communication cycle. This allows the calibration data link to verify any type of timing length sub-cycle required at once, or to verify all types of timing length sub-cycles at once, during calibration experiments.
[0045] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the present invention is not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.
Claims
1. A combined timing calibration method for calibrating data links, characterized in that, The method for enabling a calibration data link to complete calibration of multiple time-length sub-cycles within a single communication cycle includes the following steps: In the calibration data link, a permutation and combination timing sequence is defined, and the timing sequence corresponds to a channel for one-to-one simulation of the product data link; the permutation and combination timing sequence is composed of a combination of timing sequences of various length types; the length type corresponds to the sub-cycle of communication between the ground equipment and a product data link; the total length of n timing sequences constitutes the communication cycle T between the ground equipment and n product data links; The calibration data link receives calibration parameter information packets sent by the ground equipment; each channel performs parameter setting for its corresponding channel. Each channel of the calibration data link performs a status self-check, generates calibration parameter information for transmission back to the ground equipment; After receiving the feedback information from the calibration data link, the ground equipment judges the calibration result and determines whether to start the operation. The calibration data chain is used to simulate the time accuracy of the product data chain for calibrating ground equipment.
2. The combined timing calibration method according to claim 1, characterized in that, When multiple length types of timing sequences are combined to form a permutation and combination timing sequence: multiple length types of timing sequences are combined according to requirements. One channel corresponds to one timing sequence and simulates a product data chain. The permutation and combination timing sequence contains n channels, and the n channels are arbitrarily combined and arranged to form a combined timing sequence.
3. The combined timing calibration method according to claim 1, characterized in that, The parameters are configured to include: the number of sub-cycles, the timing length of each sub-cycle, and the operating parameters of each sub-cycle.
4. The combined timing calibration method according to claim 1, characterized in that, The timing length type corresponds to the actual time length, communication type, or modulation method.
5. The combined timing calibration method according to claim 1, characterized in that, The calibration parameter information packet includes: frame header, number of channel types, parameters of the first to nth channels, reserved information, and check bytes; The returned calibration parameter information includes: frame header, self-test information, parameter setting identifier, number of channel types, parameters of the first to nth channels, reserved information, and check bytes; the self-test information includes normal and abnormal; the parameter setting identifier includes: parameter setting successful and parameter setting abnormal.
6. The combined timing calibration method according to claim 1, characterized in that, After the ground equipment is determined to start working, the calibration data link communicates with the ground equipment.
7. The combined timing calibration method according to claim 1, characterized in that, The determination of the calibration result refers to: obtaining the feedback information of the calibration data chain and determining whether all channels have completed parameter setting; if all channels have completed parameter setting, it is determined that the operation can be started.