Method, system and equipment for improving working efficiency of repeater and medium

By real-time monitoring and dynamic adjustment of the distance and power between the host unit and the car unit, a mapping database is constructed and the slope is calculated, which solves the power saturation problem caused by excessive signal strength in the car unit, thereby improving the working efficiency and user experience of the repeater.

CN121530438APending Publication Date: 2026-02-13CHINA TOWER CO LTD
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Patent Information

Application Number
CN202511642485.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-11
Publication Date
2026-02-13

AI Technical Summary

Technical Problem

In existing technologies, excessively high signal strength between the car unit and the main unit leads to a decrease in the performance and efficiency of the power amplifier, and the collaboration of equipment from different manufacturers increases costs and debugging workload.

Method used

By collecting the distance and power between the host unit and the car unit in real time, a mapping database is constructed, the data slope is dynamically updated and calculated, critical distance points are screened, and the transmission power and host unit gain are adjusted to avoid power saturation.

Benefits of technology

This effectively avoids power oversaturation of components inside the elevator car unit, improves amplifier performance and efficiency, ensures coverage inside the elevator car, and enhances user experience and repeater deployment efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention belongs to the technical field of repeaters, and particularly relates to a method, a system, equipment and a medium for improving the working efficiency of a repeater, and the method comprises the steps: setting an initial distance value between a host unit and a car unit at any moment, initializing the initial power of an uplink transmission signal of the car unit correspondingly mapped with the initial distance value, and constructing an original database; collecting and measuring a real-time distance value and real-time power in real time in a preset period according to a preset frequency duration, and updating the mapping relation in the original database based on the real-time distance value and the real-time power; verifying whether the power data of all the distance points are complete and whether the number of updating times reaches the standard, and ending the collection based on a verification result, or continuing the collection; calculating a data slope corresponding to the plurality of acquisition data, and screening a critical distance point based on the data slope to trigger a transmitting power adjustment instruction; and receiving the transmitting power adjusting instruction, monitoring the running direction of the car, and adjusting the gain of the host unit according to the distance change trend. According to the invention, the working efficiency of the repeater is improved.
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Description

TECHNICAL FIELD

[0001] The present disclosure belongs to the technical field of repeater, and particularly relates to a method, system, device and medium for improving the working efficiency of a repeater. BACKGROUND

[0002] The host unit couples the downlink radio frequency signal of the base station into the host unit through the forward antenna in a wireless manner, processes the transmission through the coverage antenna, and at the same time, converts the uplink signal of the car unit into an uplink radio frequency signal after processing, and transmits the uplink radio frequency signal to the source through the forward antenna. The car unit couples the downlink radio frequency signal transmitted by the host unit into the car unit, processes the transmission through the coverage antenna, and at the same time, converts the uplink signal of the UE into an uplink radio frequency signal after processing, and transmits the uplink radio frequency signal to the host unit through the forward antenna, as shown in FIG. 1. Figure 1 When the car unit runs towards the host unit, the signal strength received by the car unit will become higher and higher. When the signal strength is too high, such as when the car unit is close to the host unit, the power of the internal devices of the car unit may be oversaturated, resulting in a decrease in the performance and efficiency of the power amplifier, or even directly shutting down the power amplifier.

[0003] In the prior art, the gain of the host unit is designed to be reduced. When the car unit is far away from the host unit, the coverage effect inside the elevator car may be affected due to the low signal strength of the host unit coupled to the car unit. The host unit and the car unit work cooperatively, and a unified communication module and standard need to be added to the host unit and the car unit. When the host unit and the car unit are not from the same manufacturer, the workload of joint research and development and debugging is increased, resulting in an increase in cost. SUMMARY

[0004] To solve the above problems, the present disclosure provides a method, system, device and medium for improving the working efficiency of a repeater, which adopts a monopulse radar to collect real-time distance values between a host unit and a car unit and real-time power of uplink transmission of the car unit in real time, constructs and dynamically updates a mapping database of distance values and power, calculates a data slope to screen a critical distance point after verifying the data integrity and the number of updates to ensure the effectiveness of the database, and triggers a transmission power adjustment instruction to dynamically adjust the gain of the host unit in combination with the running direction of the car, so as to improve the working efficiency of the repeater.

[0005] In a first aspect, the present disclosure provides a method for improving the working efficiency of a repeater, which comprises, setting an initial distance value between the host unit and the car unit at any moment, initializing an initial power of uplink transmission of the car unit corresponding to the initial distance value, and constructing an original database; collecting real-time distance values and real-time power by a monopulse radar in a preset period and at a preset frequency, and updating the mapping relationship in the original database based on the real-time distance values and the real-time power. Verifying whether the power data of all distance points is complete and whether the update times meet the standard, based on the verification result, ending the collection, or, continuing the collection; Calculating data slopes corresponding to a plurality of collected data, and screening critical distance points based on the data slopes to trigger a transmission power adjustment instruction; Receiving the transmission power adjustment instruction, monitoring the running direction of the car, and adjusting the gain of the host unit according to the distance change trend.

[0006] Further, Setting a distance parameter between the host unit and the car unit at any time, specifically including: RoD(i)=RoD_Max-DPI×i, wherein RoD(i) is the initial distance value between the host unit and the car unit at any time corresponding to the ith index value, RoD_Max is the farthest distance between the elevator car and the host unit, DPI is the distance precision, and RoD(i_Max)=RoD_Min, RoD_Min is the closest distance between the elevator car and the host unit.

[0007] Further, Updating the mapping relationship in the original database based on the real-time distance value and the real-time power, specifically including: Sending a single pulse signal by the host unit, measuring the real-time distance value between the host unit and the elevator car based on the single pulse radar principle, and recording the corresponding real-time power of the car unit at the same time; Traversing a plurality of initial distance values in the original database, and screening an initial distance value closest to the real-time distance value as a target distance value; Extracting the initial power corresponding to the target distance value, judging whether the initial power is empty, and comparing it with the real-time power, updating the initial power based on the judgment result and the comparison result, or keeping it unchanged to obtain a target power; Updating the mapping relationship in the original database based on the target distance value and the target power.

[0008] Further, Updating the initial power based on the judgment result and the comparison result, or keeping it unchanged, specifically including: If the initial power is empty, or the real-time power is greater than the initial power, updating the initial power to the real-time power; Otherwise, keeping it unchanged.

[0009] Further, Verifying whether the power data of all distance points is complete and whether the update times meet the standard, specifically including: Traverse a plurality of target distance values corresponding to the target power and target update times in the current preset period; If any of the target power is empty, go to the next cycle to continue collecting; If the plurality of target power is not empty, and the target update times is greater than or equal to the preset times, end the collection.

[0010] Further, Based on the data slope, the critical distance point is screened to trigger the transmission power adjustment instruction, specifically including: Based on the slope calculation formula, the data slope is calculated; The data slope is compared with the preset slope threshold, and the candidate distance value data is screened based on the comparison result; Record the minimum index value and its corresponding data slope in a plurality of candidate distance values, and take it as the critical distance value and the critical data slope. When the distance value between the host unit and the car unit is the critical distance value, the transmission power adjustment instruction is triggered.

[0011] Further, According to the distance change trend, the host gain is dynamically adjusted, specifically including: Receive the transmission power adjustment instruction, start the monitoring window with a preset time length, and real-time acquire the monitoring distance value; Compare the monitoring distance value with the critical distance value to obtain the comparison result; If the monitoring distance value continuously decreases compared with the critical distance value, the host unit reduces the gain; If the monitoring distance value increases compared with the critical distance value, the host unit maintains the current gain or restores to the gain before adjustment.

[0012] In the second aspect, based on the same inventive concept, the present disclosure provides a system for improving the working efficiency of a repeater, the system comprising: A database construction module is used to set the distance parameter between the host unit and the car unit at any time, and initialize the distance parameter and the corresponding mapping of the car unit uplink transmission power to construct an original database; An update module connected with the database construction module is used to collect the real-time distance value and real-time power through a single pulse radar in a preset period with a preset frequency duration, and update the mapping relationship in the original database based on the real-time distance value and real-time power; A verification module is used to verify whether the power data of all distance points is complete and the update times is up to standard, based on the verification result to end the collection, or continue the collection; A slope calculation module is used to calculate the data slope corresponding to a plurality of collection data, and to screen the critical distance point based on the data slope to trigger the transmission power adjustment instruction; The gain adjustment module is configured to receive a transmission power adjustment instruction, monitor a running direction of the car, and dynamically adjust a host gain according to a distance change trend.

[0013] In a third aspect, the present disclosure provides an electronic device, comprising at least one processor and at least one memory electrically connected; The memory is electrically connected with the processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform any of the methods for improving the working efficiency of the repeater as described above.

[0014] In a fourth aspect, the present disclosure provides a computer storage medium, wherein the computer readable storage medium stores a computer program; The computer program is executed by the processor to implement any of the methods for improving the working efficiency of the repeater as described above.

[0015] Compared with the prior art, the present disclosure has the following advantages: 1. By real-time monitoring and dynamic adjustment, the problem of power oversaturation of the internal devices of the car unit is effectively avoided, the power amplifier performance and efficiency are improved, and meanwhile, the coverage effect inside the elevator car is ensured and the user experience is improved.

[0016] 2. The distance-power mapping database is established, the critical point of the car entering the AGC state is accurately identified through historical data slope analysis, the power adjustment is ensured to be preposed, and the power amplifier oversaturation is avoided.

[0017] 3. The automatic adjustment of the transmission signal strength is completed by the one-way judgment of the car unit running state by the host unit, the problems such as power saturation caused by the too large signal strength coupled when the car unit is close to the host unit are effectively solved, the elevator coverage effect of the repeater is optimized, and the deployment efficiency and user experience of the repeater are improved.

[0018] Other features and advantages of the present disclosure will be described in the following description, and some will become apparent from the description, or will be learned through implementation of the present disclosure. The purposes and other advantages of the present disclosure can be achieved and obtained through the structures indicated in the specification, claims, and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are some embodiments of the present disclosure, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0020] Figure 1 A schematic diagram of a repeater signal coverage system architecture in an elevator scenario in the prior art is shown. Figure 2 A flowchart of a method for improving the working efficiency of a repeater according to an embodiment of the present disclosure is shown. Figure 3 A schematic diagram of an electronic device structure according to an embodiment of the present disclosure is shown. Figure 4 A schematic diagram of a repeater AGC according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are some but not all of the embodiments of the present disclosure. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present disclosure.

[0022] Figure 2 A flowchart of a method for improving the working efficiency of a repeater according to an embodiment of the present disclosure is shown. Figure 2 As shown in the flowchart, the method for improving the working efficiency of a repeater according to an embodiment of the present disclosure includes, S1, setting an initial distance value between a host unit and a car unit at any moment, and initializing an initial power of an uplink transmission signal of the car unit corresponding to the initial distance value, to construct an original database; In the embodiment of the present disclosure, the step of S1 specifically includes: Setting a distance parameter between the host unit and the car unit at any moment, specifically including: RoD(i) = RoD_Max - DPI x i, wherein RoD(i) is an initial distance value between the host unit and the car unit at any moment for the i-th index value, RoD_Max is the farthest distance between the elevator car and the host unit, DPI is the distance precision, i is the index value of the distance sequence, starting from 0 and increasing, and the value range is from 0 to i_Max, and RoD(i_Max) = RoD_Min, and RoD_Min is the closest distance between the elevator car and the host unit.

[0023] In the embodiment, the farthest distance and the closest distance between the elevator car and the host unit are both measured and entered, and the precision of the RoD value is DPI (meters) (which can be dynamically configured as needed, such as 0.1, 0.2,...).

[0024] wherein, .

[0025] In the embodiments of the present disclosure, the constructing the original database specifically includes: RoD(i) has the initial power P_Current_Value(i) value (initial value NULL, unit dBm) of the uplink transmission of the elevator car unit corresponding to the mapping and the P_Current_Value(i) value update times P_Update_Times (initial value 0, integer greater than or equal to 0); initially form [RoD(i) P_Current_Value(i) P_Update_Times] original database.

[0026] S2, in a preset period, the real-time distance value and the real-time power are collected by the monopulse radar at a preset frequency for a period of time, and the mapping relationship in the original database is updated based on the real-time distance value and the real-time power; In the embodiments of the present disclosure, the step S2 specifically includes: S21, the monopulse signal is sent by the host unit, the real-time distance value between the host unit and the elevator car is measured based on the monopulse radar principle, and the corresponding real-time power of the car unit is recorded; S22, traverse the several initial distance values in the original database, and select the initial distance value closest to the real-time distance value as the target distance value; S23, extract the initial power corresponding to the target distance value, judge whether the initial power is empty, and compare it with the real-time power, update the initial power based on the judgment result and the comparison result, or keep it unchanged, and obtain the target power; S231, if the initial power is empty, or the real-time power is greater than the initial power, update the initial power to the real-time power; S232, otherwise, keep it unchanged.

[0027] S24, update the mapping relationship in the original database based on the target distance value and the target power.

[0028] In the embodiments of the present disclosure, the distance between the elevator car and the distance is judged and confirmed by the monopulse radar principle, and the real-time distance value D(j) is recorded, and the real-time power P_Update_Value(j) corresponding to the distance D(j) is recorded; Confirm the correspondence between the real-time distance value D(j) and the initial distance value RoD(i), find the RoD(i) value closest to D(j) by finding the minimum delta value, and the specific method is to calculate delta = |D(j)-RoD(i)|, find the RoD(i) corresponding to the minimum delta, and if there are multiple same minimum delta values, take the corresponding minimum RoD(i); If the initial power P_Current_Value(i) corresponding to RoD(i) is NULL, or P_Update_Value(j) > P_Current_Value(i), update P_Current_Value(i) to P_Update_Value(j), otherwise keep the original value; After each mapping is completed, the update times P_Update_Times corresponding to RoD(i) is added by 1 to obtain the target update times.

[0029] In the embodiment, the data collection is repeated with a frequency duration F (ms) in a period T, and the frequency duration F (ms) and the period T can be set separately, for example, F is set to 50 ms, and T is set to n hours of busy time per day in a week (7 days).

[0030] S3, verify whether the power data of all distance points is complete and whether the update times meet the standard, and end the collection based on the verification result, or continue the collection; In the embodiment of the present disclosure, the step S3 specifically includes: S31, traverse the target power and the target update times corresponding to a plurality of target distance values in the current preset period; S32, if any of the target power is empty, proceed to the next period to continue collection; S33, if the plurality of target power is non-empty and the target update times is greater than or equal to the preset times, end the collection.

[0031] In the embodiment, when the preset period T ends, traverse P_Current_Value(i) and P_Update_Times corresponding to all RoD(i): if P_Current_Value(i) of any RoD(i) is NULL, proceed to the next period T to continue collection; if P_Current_Value(i) of all RoD(i) is non-empty and P_Update_Times≥N (N is a configurable positive integer), confirm that the data is valid, and end the collection process.

[0032] S4, calculate the data slope corresponding to a plurality of collected data, and trigger the transmission power adjustment instruction based on the data slope to screen the critical distance point; In the embodiments of the present disclosure, the step of S4 specifically comprises: S41, calculating the data slope based on a slope calculation formula; S42, comparing the data slope with a preset slope threshold, and screening candidate distance value data based on a comparison result; S43, recording a minimum index value in the several candidate distance values and a corresponding data slope, and taking the minimum index value and the corresponding data slope as a critical distance value and a critical data slope, and triggering a transmission power adjustment instruction when a distance value between the host unit and the car unit is the critical distance value.

[0033] In the present embodiment, after the data collection work is completed, the collected [RoD(i) P_Current_Value(i)] (i=0, 1, 2,..., i_Max) data is judged, and the judgment method is as follows: First, the slope of the collected data is judged by the following formula with n data points.

[0034] Gradient(i)= , ; In the formula, FH is the actual floor height (m) of the building where the elevator shaft is located (measured and entered), Coef1 is a coefficient for determining the size of the judgment window, such as 0.5, 1, 1.5, and the like (specifically configurable), and FH, Coef1 and DPI together determine the size of the slope judgment window.

[0035] For the convenience of understanding, the calculation of the above formula is illustrated by assuming that i_Max=6, n=3, i_Max-n+1=4, then the values to be calculated are Gradient(0), Gradient(1), Gradient(2), Gradient(3), Gradient(4), wherein Gradient(0) uses the values of RoD(0), RoD(1), RoD(2) and their respective corresponding P_Current_Value(0), P_Current_Value(1), P_Current_Value(2); Gradient(1) uses the values of RoD(1), RoD(2), RoD(3) and their respective corresponding P_Current_Value(1), P_Current_Value(2), P_Current_Value(3); and so on, Gradient(3) uses the values of RoD(3), RoD(4), RoD(5) and their respective corresponding P_Current_Value(3), P_Current_Value(4), P_Current_Value(5); Gradient(4) uses the values of RoD(4), RoD(5), RoD(6) and their respective corresponding P_Current_Value(5), P_Current_Value(5), P_Current_Value(6); that is, when i=i_Max-n+1, the largest value in [RoD(i) P_Current_Value(i)] (i=0, 1, 2,..., i_Max) has been used, if continue to add, it exceeds the range, so the maximum value of i is set as i_Max-n+1.

[0036] For the convenience of understanding, the calculation of the above formula is explained, if n=3, then the data of [RoD(0) P_Current_Value(0)], [RoD(1) P_Current_Value(1)], [RoD(2) P_Current_Value(2)], [RoD(3) P_Current_Value(3)] are respectively false [1 2], [2 3], [3 5], [5 7], then the corresponding: Gradient(0)= ; Gradient(1)= ; Secondly, judge all Gradient(i) values, if |Gradient(i)|≤Threshold; (Threshold is a value greater than or equal to 0 and less than or equal to 1, which can be configured, such as 0.05, etc.) then it is a candidate data that meets the requirements (it is inferred that the car unit has entered the AGC start). Record the i value set of all candidate data that meets the requirements, and record the minimum i_Min value of the i value in the set and the value of Gradient(i_Min-1).

[0037] Finally, according to the i_Min value determined above, when the car unit is at a distance of RoD(i_Min) from the host unit, the host unit will consider adjusting the transmission power.

[0038] S5, receiving the transmission power adjustment instruction, monitoring the running direction of the car, and adjusting the gain of the host unit according to the distance change trend.

[0039] In the embodiment of the present disclosure, the step of S5 specifically includes: S51, receiving the transmission power adjustment instruction, starting a monitoring window with a preset time length, and acquiring a monitoring distance value in real time; S52, comparing the monitoring distance value with the critical distance value to obtain a comparison result; S53, if the monitoring distance value continuously decreases compared with the critical distance value, the host unit reduces the gain; S54, if the monitoring distance value increases compared with the critical distance value, the host unit maintains the current gain or restores to the gain before adjustment.

[0040] In the embodiment, when the car unit is at a distance of RoD(i_Min) from the host unit, a monitoring window with a time length of Coef2xF (Coef2 is a configurable positive integer, and F is the data acquisition frequency time length) is started; within the monitoring window, the distance RoD(i) between the car unit and the host unit is acquired in real time: If RoD(i) continuously decreases compared with RoD(i_Min), the host unit reduces the gain according to the formula G_Update=G_Current-(RoD(i_Min) / RoD(i))x|Gradient(i_Min-1)|, where G_Current is the current gain; If RoD(i) increases compared with RoD(i_Min), the host unit maintains the current gain or restores to the gain before adjustment.

[0041] Based on the same inventive concept, the embodiment of the present disclosure also provides a system for improving the working efficiency of a repeater corresponding to the above-mentioned method, comprising: A database construction module is configured to set a distance parameter between the host unit and the car unit at any time, and initialize the distance parameter and the corresponding mapping of the uplink transmission power of the car unit to construct an original database; An updating module is connected with the database construction module, and is configured to collect real-time distance values and real-time power by the single-pulse radar in a preset period and at a preset frequency, update the mapping relationship in the original database based on the real-time distance values and the real-time power, and the like. A verification module is configured to verify whether the power data of all distance points are complete and whether the updating times meet the standard, and end the collection based on the verification result, or continue the collection. A slope calculation module is configured to calculate data slopes corresponding to a plurality of collected data, and select critical distance points based on the data slopes to trigger a transmission power adjustment instruction. A gain adjustment module is configured to receive the transmission power adjustment instruction, monitor the running direction of the car, and dynamically adjust the host gain according to the distance change trend.

[0042] Based on the same inventive concept, the disclosure also provides an electronic device. As shown in Figure 3 The electronic device of the embodiment of the disclosure includes at least one processor and at least one memory electrically connected, the memory is electrically connected with the processor, wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to execute the method for improving the working efficiency of the repeater as described above.

[0043] It should be noted that the electrical connection between the above-mentioned units does not necessarily mean the connection between the lines, and the indirect connection mode can also be used as long as the purpose of the disclosure is achieved.

[0044] Based on the same inventive concept, the disclosure also provides a computer storage medium, and the computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the method for improving the working efficiency of the repeater as described above.

[0045] Based on the same inventive concept, the disclosure also provides a computer program product, and the computer program product is stored in at least one storage medium; the computer program product includes a plurality of instructions for enabling at least one computer device to execute the method for improving the working efficiency of the repeater as described above.

[0046] Original explanation of the AGC of the repeater: At present, the repeater mainly adjusts the gain of the repeater by detecting the strength RSSI (Received Signal Strength Indication, received signal strength indication) of the received signal of the host base station.

[0047] The specific implementation process is as shown in Figure 4 Assuming that the repeater receives signal strength from the host base station as RssiIn (dBm), the output power is Pout (dBm), and the repeater gain is Pgain (Curr) (dB), then: Pout = RssiIn + Pgain (Curr) ; In order to ensure the performance of the repeater and reduce the interference to the host base station, the repeater usually has the functions of automatic level control and automatic gain adjustment, that is, the output power Pout is limited by the maximum output power Pout (Max) of the repeater, and the repeater gain Pgain (Curr) is limited by the maximum gain Pgain (Max) of the repeater. If the received signal strength RssiIn from the base station is large enough, the repeater gain Pgain (Curr) will be adjusted downward to ensure that Pout ≤ Pout (Max), so as to stabilize the output signal of the repeater, ensure normal and reliable communication, and control the interference degree to the host base station.

[0048] Although the present disclosure is described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions described in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present disclosure.​

Claims

1. A method for improving the working efficiency of a repeater, characterized in that, The method includes, Set the initial distance value between the host unit and the car unit at any given time, and initialize the initial distance value and the initial power of the uplink transmission signal of the corresponding car unit to construct the original database; Within a preset period, at a preset frequency and duration, real-time distance and power values ​​are collected and measured in real time using a single-pulse radar. The mapping relationship in the original database is then updated based on the real-time distance and power values. Verify that the power data of all distance points is complete and the number of updates meets the standard. Based on the verification results, end the data collection or continue the data collection. Calculate the data slope corresponding to several collected data points, and select critical distance points based on the data slope to trigger the transmit power adjustment command; The system receives the transmission power adjustment command, monitors the car's running direction, and adjusts the gain of the main unit according to the distance change trend.

2. The method according to claim 1, characterized in that, The distance parameter between the main unit and the car unit at any given time can be set, specifically including: RoD(i) = RoD_Max - DPI × i In the formula, RoD(i) is the initial distance value between the host unit and the car unit at any time corresponding to the i-th index value, RoD_Max is the farthest distance between the elevator car and the host unit, and DPI is the distance accuracy. And RoD(i_Max) = RoD_Min, where RoD_Min is the shortest distance between the elevator car and the main unit.

3. The method according to claim 2, characterized in that, Updating the mapping relationship in the original database based on real-time distance and real-time power values ​​specifically includes: The host unit sends a single pulse signal, and the real-time distance between the host unit and the elevator car is measured based on the principle of single pulse radar. At the same time, the real-time power of the corresponding car unit is recorded. Iterate through several initial distance values ​​in the original database and select the initial distance value that is closest to the real-time distance value as the target distance value; Extract the initial power corresponding to the target distance value, determine whether the initial power is empty, and compare it with the real-time power. Update the initial power based on the determination result and the comparison result, or leave it unchanged to obtain the target power. The mapping relationship in the original database is updated based on the target distance value and the target power.

4. The method according to claim 3, characterized in that, The initial power is updated based on the judgment and comparison results, or remains unchanged, specifically including: If the initial power is empty, or if the real-time power is greater than the initial power, then the initial power is updated to the real-time power; Conversely, it remains unchanged.

5. The method according to claim 4, characterized in that, Verify that the power data for all distance points is complete and that the update frequency meets the requirements, specifically including: Iterate through the target power and target update count corresponding to several target distance values ​​within the current preset period; If any of the target powers is empty, proceed to the next cycle to continue data acquisition; If all of the target powers are non-empty and the number of target updates is greater than or equal to the preset number, then the data collection ends.

6. The method according to claim 5, characterized in that, Critical distance points are selected based on data slope to trigger transmit power adjustment commands, specifically including: The slope of the data is calculated based on the slope calculation formula; The data slope is compared with a preset slope threshold, and candidate distance value data is filtered based on the comparison result; Record the minimum index value and its corresponding data slope among several candidate distance values, and use it as the critical distance value and critical data slope. When the distance between the host unit and the car unit is the critical distance value, trigger the transmission power adjustment command.

7. The method according to claim 6, characterized in that, The host gain is dynamically adjusted based on the distance change trend, specifically including: Upon receiving the transmission power adjustment command, a monitoring window of preset duration is opened to obtain the monitoring distance value in real time; The monitoring distance value is compared with the critical distance value to obtain the comparison result; If the monitored distance value continues to decrease compared to the critical distance value, the host unit reduces its gain; If the monitoring distance value increases compared to the critical distance value, the host unit maintains the current gain or restores to the gain before adjustment.

8. A system for improving the working efficiency of repeaters, characterized in that, The system includes, The database construction module is used to set the distance parameters between the host unit and the car unit at any given time, and to initialize the uplink transmission power of the car unit corresponding to the distance parameters, thereby constructing the original database. The update module is connected to the database construction module and is used to collect and measure real-time distance and real-time power through a single-pulse radar at a preset frequency and duration within a preset period, and update the mapping relationship in the original database based on the real-time distance and real-time power. The verification module is used to verify whether the power data of all distance points is complete and whether the number of updates meets the standard. Based on the verification results, the data acquisition ends, or the data acquisition continues. The slope calculation module is used to calculate the data slope corresponding to several collected data points, and to filter critical distance points based on the data slope to trigger the transmit power adjustment command; The gain adjustment module is used to receive transmission power adjustment commands, monitor the car's running direction, and dynamically adjust the host gain according to the distance change trend.

9. An electronic device, characterized in that, Includes at least one processor and at least one memory electrically connected; The memory is electrically connected to the processor, wherein the memory stores instructions executable by at least one of the processors, the instructions being executed by at least one of the processors to enable at least one of the processors to perform the method for improving the operating efficiency of a repeater as described in any one of claims 1-7.

10. A computer storage medium, characterized in that, The computer-readable storage medium stores a computer program. When the computer program is executed by the processor, it implements the method for improving the working efficiency of a repeater as described in any one of claims 1-7.