A positioning transmission system and method for avoiding interference between multiple positioning signal sources

Abstract

The present invention belongs to the technical field of wireless signal transmission, and specifically discloses a positioning transmission system and method for avoiding interference between multiple positioning signal sources. When multiple positioning units send positioning signals in a specified area, each positioning signal generator will send its own identity code at the same time when sending the positioning signal, and the code cannot be repeated. The controller of each positioning unit controls the positioning signal generator to send the positioning signal only after receiving the identity code sent by other positioning units with the same activation ID; in this way, only one positioning unit sends the positioning signal at any time, thereby avoiding interference between the positioning signals sent by multiple positioning units at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless signal transmission, and in particular to a positioning transmission system and method for avoiding mutual interference of multiple positioning signal sources. Background Art

[0002] Currently, using radio signals for positioning is a common positioning solution. In the positioning process, multiple signal sources are usually used to increase the accuracy of positioning. However, as the number of positioning signal sources increases, the interference between the signal sources will reduce the positioning effect. Generally speaking, multi-channel and digital signal solutions are used to solve this type of interference, but this solution increases the hardware complexity and cost on the one hand, and adds unnecessary noise to other radio applications in the scene on the other hand. Therefore, the present invention proposes a "subtraction" solution, which solves the above problems well without increasing the cost. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies in the prior art and to provide a positioning transmission system and method for preventing multiple positioning signal sources from interfering with each other.

[0004] To achieve the above object, the present invention is implemented according to the following technical solutions:

[0005] The first object of the present invention is to provide a positioning transmission system that avoids interference between multiple positioning signal sources, including multiple positioning units arranged in a designated area, characterized in that at the same time in the designated area, one and only one positioning unit transmits a positioning signal.

[0006] Furthermore, each of the positioning units comprises:

[0007] A positioning signal generator, used to transmit a positioning signal and an independent identity code;

[0008] A signal receiver, used to receive an identity code sent by a positioning signal generator of another positioning unit;

[0009] The controller is interconnected with the positioning signal generator and the positioning signal receiver. The controller is used to control the positioning signal generator to send its own identity code within a preset time window. The controller of each positioning unit stores its own independent activation ID. The controller of each positioning unit controls the positioning signal generator to send a positioning signal only after receiving the identity code sent by other positioning units with the same activation ID.

[0010] Furthermore, the controller of each positioning unit compares the received identity codes sent by all other positioning units with its own identity code, finds the minimum value among all codes greater than its own code, and uses the minimum value as the activation ID of the positioning unit.

[0011] A second object of the present invention is to provide a positioning transmission method for preventing multiple positioning signal sources from interfering with each other, comprising the following steps:

[0012] S1. The controller pre-sets a time window to ensure that all positioning units can complete a positioning action within a time window;

[0013] S2. Within the time window, the controller of each positioning unit determines whether it has received the activation ID set by itself; if not, execute step S3; if yes, execute step S4;

[0014] S3, determine whether there is an identity code greater than the activation ID; if not, execute S4; if yes, execute S5;

[0015] S4, within the time window, the controller of the positioning unit controls the positioning signal generator to send a positioning signal;

[0016] S5. Among all received identity codes that are greater than the self-activation ID, select the smallest identity code as the self-activation ID for the next cycle.

[0017] Compared with the prior art, the present invention, when there are multiple positioning units sending positioning signals in a specified area, each positioning signal generator will send its own identity code at the same time when sending the positioning signal, and the code is non-repeatable. The controller of each positioning unit controls the positioning signal generator to send a positioning signal only after receiving the identity code sent by other positioning units with the same activation ID; in this way, only one positioning unit sends a positioning signal at any time, thereby avoiding interference between multiple positioning units sending positioning signals at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a flow chart of a positioning transmission method for avoiding interference between multiple positioning signal sources. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the invention.

[0020] Example 1

[0021] This embodiment specifically discloses a positioning transmission system for avoiding interference between multiple positioning signal sources, including multiple positioning units arranged in a specified area, and at the same time in the specified area, only one positioning unit transmits a positioning signal; specifically, each of the positioning units includes:

[0022] A positioning signal generator, used to transmit a positioning signal and an independent identity code;

[0023] A signal receiver, used to receive an identity code sent by a positioning signal generator of another positioning unit;

[0024] A controller is interconnected with the positioning signal generator and the positioning signal receiver. The controller is used to control the positioning signal generator to send out its own identity code within a preset time window. The controller of each positioning unit stores an independent activation ID. It should be noted that the activation ID of each positioning unit is determined in the following way: the controller of each positioning unit compares the identity codes received from all other positioning units with its own identity code, finds the minimum value among all codes greater than its own code, and uses the minimum value as the activation ID of the positioning unit; the controller of each positioning unit controls the positioning signal generator to send out a positioning signal only after receiving the identity code sent by other positioning units with the same activation ID; in addition, any working positioning signal generator can be turned off at any time. When the device activated by the turned-off positioning signal generator cannot search for the activation code, it will re-determine its own activation ID.

[0025] Example 2

[0026] The positioning transmission system for avoiding interference between multiple positioning signal sources in Example 1 can be used for positioning reflection to avoid interference between multiple positioning signal sources. Specifically, Figure 1 As shown, a positioning transmission method for avoiding interference between multiple positioning signal sources comprises the following steps:

[0027] S1. The controller pre-sets a time window to ensure that all positioning units can complete a positioning action within a time window;

[0028] S2. Within the time window, the controller of each positioning unit determines whether it has received the activation ID set by itself; if not, execute step S3; if yes, execute step S4;

[0029] S3, determine whether there is an identity code greater than the activation ID; if not, execute S4; if yes, execute S5;

[0030] S4, within the time window, the controller of the positioning unit controls the positioning signal generator to send a positioning signal;

[0031] S5. Among all received identity codes that are greater than the self-activation ID, select the smallest identity code as the self-activation ID for the next cycle.

[0032] Through the implementation of the above embodiment, only one positioning unit sends out a positioning signal at any time, thereby avoiding interference between positioning signals sent out by multiple positioning units at the same time.

[0033] The technical solution of the present invention is not limited to the above-mentioned specific embodiments. All technical variations made according to the technical solution of the present invention fall within the protection scope of the present invention.

Claims

1. A positioning transmission system for avoiding interference between multiple positioning signal sources, comprising multiple positioning units arranged in a designated area, characterized in that: At the same time, there is only one positioning unit in the designated area that transmits a positioning signal; Each of the positioning units comprises: A positioning signal generator, used to transmit a positioning signal and an independent identity code; A signal receiver, used to receive an identity code sent by a positioning signal generator of another positioning unit; A controller is interconnected with the positioning signal generator and the positioning signal receiver, and the controller is used to control the positioning signal generator to send its own identity code within a preset time window. The controller of each positioning unit stores an independent activation ID of its own. The controller of each positioning unit controls the positioning signal generator to send a positioning signal only after receiving the identity code sent by other positioning units with the same activation ID; The controller of each positioning unit compares the received identity codes sent by all other positioning units with its own identity code, finds the minimum value among all codes greater than its own code, and uses the minimum value as the activation ID of the positioning unit.

2. A positioning transmission method for avoiding interference between multiple positioning signal sources, characterized in that: The following steps are involved: S1. The controller pre-sets a time window to ensure that all positioning units complete a positioning action within a time window; S2. Within the time window, the controller of each positioning unit determines whether it has received the activation ID set by itself; if not, execute step S3; If yes, execute step S4; S3, determine whether there is an identity code greater than the activation ID; if not, execute S4; if yes, execute S5; S4, within the time window, the controller of the positioning unit controls the positioning signal generator to send a positioning signal; S5. Among all received identity codes that are greater than the self-activation ID, select the smallest identity code as the self-activation ID for the next cycle.

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