Forklift safe distance warning method and system based on Bluetooth distance measurement

Abstract

The invention discloses a forklift safety distance warning method and system based on Bluetooth distance measurement, and relates to the technical field of forklift safety monitoring, and the method comprises the steps: detecting the distance between a forklift and an operator based on an RSSI signal intensity algorithm; through multiple reminding modes, when an operator enters an early warning range, an acousto-optic alarm is given out, and related information is displayed on a display screen; alarm events and related information are recorded, and the operation process is optimized. According to the method, the distance between the forklift and an operator is detected through an RSSI (received signal strength indication) algorithm, real-time distance monitoring and automatic response are ensured, a multiple reminding mechanism is combined with two modes of sound-light alarm and display screen reminding, effective transmission of warning information is ensured, accident potential is reduced, and through deep analysis of data, the safety of the forklift is improved. The system can identify areas with frequent operation and concentrated risks, and promotes the overall intelligent development of warehouse management.

Description

Technical Field

[0001] The present invention relates to the technical field of forklift safety monitoring, and in particular to a forklift safety distance warning method and system based on Bluetooth ranging. Background Art

[0002] In recent years, with the rapid development of warehousing and logistics industries, forklifts, as core handling equipment, have attracted increasing attention for their operational safety issues. Traditional forklift safety management methods mostly rely on the operator's experience and judgment, ground safety signs, and passive reminders of reflective clothing. However, with the complexity of the operating environment, these methods have shown their limitations. In order to improve the automation and intelligence of forklift operations, a variety of safety distance detection and warning technologies have emerged in recent years, such as visual detection and infrared sensing. However, these technologies have certain limitations in environmental adaptability and real-time performance, especially in industrial environments with many obstructions and narrow spaces. Therefore, low-power Bluetooth (BLE) technology has been gradually introduced into forklift safety management due to its high-precision distance detection capability and good environmental adaptability, in order to improve operational efficiency and safety.

[0003] Existing forklift safety detection and warning technologies have many deficiencies. Existing visual or infrared detection technologies are difficult to accurately perceive obstacles or blind spots in complex storage environments, resulting in the inability to meet high standards of safety requirements in terms of warning accuracy and real-time performance. Most traditional forklifts lack multiple reminder mechanisms. Even if sound and light alarm devices are installed, they can usually only provide simple prompts at close range and cannot effectively cover long-distance safety warnings. Most existing forklift equipment does not have the function of recording alarm data, which limits the ability to trace and analyze and optimize processes after an accident. Therefore, traditional technical means fail to achieve graded warnings for operators, and cannot make accurate real-time responses based on safety distances. In addition, when encountering a high-noise working environment, the alarm signal is easily ignored. The present invention is based on Bluetooth ranging and RSSI algorithms. By real-time detection of the distance between the forklift and the operator, combined with sound and light alarms and display screen reminders, accurate warnings for operators and comprehensive recording of accident information are achieved, solving the deficiencies of traditional methods in intelligence, adaptability and data traceability. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention is proposed.

[0005] Therefore, the technical problems solved by the present invention are: the existing safety distance detection method has insufficient monitoring accuracy, a single early warning mechanism, and a lack of data recording function, as well as the problem of how to achieve efficient and real-time safety early warning for forklifts and operators.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a forklift safety distance warning method based on Bluetooth ranging, including detecting the distance between the forklift and the operator based on the RSSI signal strength algorithm; through multiple reminder methods, when the operator enters the warning range, an audible and visual alarm is issued and relevant information is displayed on the display screen; the alarm event and related information are recorded to optimize the operation process.

[0007] As a preferred solution of the forklift safety distance warning method based on Bluetooth ranging described in the present invention, the RSSI signal strength algorithm includes an RSSI value based on the received signal strength indication, which reflects the distance between the forklift and the personnel. The RSSI signal weakens as the distance between the operator and the forklift increases. By continuously monitoring the changes in the RSSI value, the distance within the range of 6 meters and 3 meters is detected. When the system detects that the RSSI signal reaches the threshold of the range of 6 meters or 3 meters, the low-frequency and high-frequency alarms are triggered respectively to prompt the operator to maintain a safe distance.

[0008] As a preferred solution of the forklift safety distance warning method based on Bluetooth ranging described in the present invention, wherein: the detection of the distance between the forklift and the operator includes adopting a graded early warning mechanism, and the triggering mechanism of the low-frequency alarm and the high-frequency alarm is based on different distance ranges; when the operator enters the 6-meter range, the host sends out a low-frequency sound and light alarm to remind the forklift driver and the operator to keep a safe distance and prevent the person from approaching the forklift further; when the person approaches to the 3-meter dangerous range, the system automatically upgrades the alarm level, triggers a high-frequency sound and light alarm, and simultaneously activates the emergency stop function to prevent the risk of collision.

[0009] As a preferred solution of the forklift safety distance warning method based on Bluetooth ranging described in the present invention, the multiple reminder methods include sound and light alarms and display screen prompts. When the operator enters the alarm range, the alarm prompts through sound and flashing lights. At the same time, the display screen displays the alarm information in real time, including the operator's number, distance and alarm time, identifying the risk personnel and their location; the real-time display function of the display screen optimizes the indication of different alarm levels through graded early warning, and the forklift operator obtains warning information through vision and hearing, and makes safe operations in different scenarios.

[0010] As a preferred solution of the forklift safety distance warning method based on Bluetooth ranging described in the present invention, the display of relevant information on the display screen includes identity recognition management by combining the display screen with an electronic work badge, the electronic work badge worn by the operator is bound one by one to the head-mounted micro-tag, and the tag worn by the operator on the helmet continuously sends Bluetooth signals to the surroundings. After the host receives the tag signal, it calculates the distance change of the tag. After entering the warning range, the display screen displays the operator's identity number in real time.

[0011] As a preferred solution of the forklift safety distance warning method based on Bluetooth ranging described in the present invention, the recording of alarm events and related information includes recording detailed information of each alarm event, including alarm number, distance data and alarm time, and recording the distance data and personnel information at the specific alarm time each time a low-frequency or high-frequency alarm event occurs.

[0012] As a preferred solution of the forklift safety distance warning method based on Bluetooth ranging described in the present invention, the optimized operation process includes analyzing the risk distribution of the working environment through the RSSI signal change law, combining the RSSI value change trend, analyzing the activity frequency and alarm triggering of the forklift in different areas, optimizing the forklift operation path and identifying the risk area, guiding the risk area division and warning area adjustment.

[0013] Another object of the present invention is to provide a forklift safety distance warning system based on Bluetooth ranging, which can use multiple reminder methods to issue an audible and visual alarm and display relevant information on a display screen when the operator enters the warning range, thereby solving the problem that the current xxxx technology contains xxx.

[0014] As a preferred solution of the forklift safety distance warning system based on Bluetooth ranging described in the present invention, it includes: a distance detection module, a multiple reminder module, and an information recording module; the distance detection module is used to detect the distance between the forklift and the operator based on the RSSI signal strength algorithm; the multiple reminder module is used to issue an audible and visual alarm and display relevant information on a display screen when the operator enters the warning range through multiple reminders; the information recording module is used to record alarm events and related information to optimize the operation process.

[0015] A computer device includes a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement a method for warning a safe distance of a forklift based on Bluetooth ranging.

[0016] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of a forklift safety distance warning method based on Bluetooth ranging.

[0017] Beneficial effects of the present invention: The forklift safety distance warning method based on Bluetooth ranging provided by the present invention detects the distance between the forklift and the operator through the RSSI (received signal strength indication) algorithm. The system can perceive the approach status of the operator in real time and perform distance assessment based on the change in signal strength, ensuring real-time distance monitoring and automatic response. The multiple reminder mechanism combines the two methods of sound and light alarm and display screen prompt. When the operator enters the warning area, the alarm immediately emits a sound and flashes the light to ensure that it can still attract attention in a noisy environment, ensure the effective communication of warning information, and reduce potential accidents. Through in-depth analysis of the data, the system can identify areas with frequent operations and concentrated risks, and then optimize the forklift operation path and divide the risk area, improve the scientificity and operability of safety management, and promote the overall intelligent development of warehouse management. The present invention has achieved better results in terms of safety, reliability and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0019] Figure 1 An overall flow chart of a forklift safety distance warning method based on Bluetooth ranging provided in the first embodiment of the present invention.

[0020] Figure 2 A product picture of a forklift safety distance warning method based on Bluetooth ranging provided in the second embodiment of the present invention.

[0021] Figure 3 A warning principle diagram of a forklift safety distance warning method based on Bluetooth ranging provided in the second embodiment of the present invention.

[0022] Figure 4 An overall flow chart of a forklift safety distance warning system based on Bluetooth ranging provided in the third embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0024] Example 1, reference Figure 1 , is an embodiment of the present invention, and provides a forklift safety distance warning method based on Bluetooth ranging, comprising:

[0025] S1: Detect the distance between the forklift and the operator based on the RSSI signal strength algorithm.

[0026] Furthermore, the RSSI signal strength algorithm includes an RSSI value based on the received signal strength indication, which reflects the distance between the forklift and the personnel. The RSSI signal weakens as the distance between the operator and the forklift increases. By continuously monitoring the changes in the RSSI value, the distance within the range of 6 meters and 3 meters is detected. When the system detects that the RSSI signal reaches the threshold of the 6-meter or 3-meter range, it triggers a low-frequency and high-frequency alarm respectively, prompting the operator to maintain a safe distance.

[0027] It should be noted that the detection of the distance between the forklift and the operator includes the use of a graded early warning mechanism, and the triggering mechanism of the low-frequency alarm and the high-frequency alarm is based on different distance ranges; when the operator enters the 6-meter range, the host sends out a low-frequency sound and light alarm to remind the forklift driver and the operator to keep a safe distance and prevent the person from approaching the forklift further; when the person approaches to the 3-meter danger range, the system automatically upgrades the alarm level, triggers a high-frequency sound and light alarm, and simultaneously activates the emergency stop function to prevent the risk of collision.

[0028] It should also be noted that RSSI (Received Signal Strength Indicator) is a universal wireless signal strength indicator used to measure the strength of received Bluetooth signals. Its value will weaken as the signal propagation distance increases. The RSSI value is used to evaluate the relative distance between the forklift and the operator because the strength attenuation characteristics of RSSI are very suitable for this continuous, contactless monitoring method. By setting thresholds of 6 meters and 3 meters, graded warnings can be provided to ensure safety and real-time performance.

[0029] It should also be noted that the 6-meter "low-frequency alarm" threshold and the 3-meter "high-frequency alarm" threshold correspond to the safety warning distance and danger distance in the operating scenarios respectively. The low-frequency alarm is triggered at 6 meters to prevent accidental approach; the high-frequency alarm is triggered within 3 meters and the emergency stop function is activated to meet the needs of emergency avoidance. This design is based on the actual situation of the operating area, allowing the system to automatically adapt to different risk levels and meet the needs of flexible response to different situations in actual warehousing operating environments.

[0030] It should also be noted that the RSSI signal strength algorithm realizes real-time monitoring of workers approaching forklifts, and determines the distance of people by measuring changes in signal strength. Unlike visual or infrared detection, RSSI signal strength attenuation can remain consistent under different light conditions and has higher environmental adaptability. The introduction of the RSSI algorithm solves the problem of insufficient monitoring accuracy of traditional methods in industrial scenarios with limited light or more obstructions. By monitoring the dual thresholds of 6 meters and 3 meters, the risk of collision can be effectively avoided. This real-time, contactless monitoring method is particularly suitable for complex warehousing and logistics environments, and a multi-level response for security precautions can be achieved through a distance-graded early warning mechanism.

[0031] S2: Through multiple reminder methods, when the operator enters the warning range, an audible and visual alarm is issued and relevant information is displayed on the display screen.

[0032] Furthermore, multiple reminder methods include sound and light alarms and display screen prompts. When the operator enters the alarm range, the alarm will give a prompt through sound and flashing lights. At the same time, the display screen will display the alarm information in real time, including the operator's number, distance and alarm time, to identify risk personnel and their location; the real-time display function of the display screen optimizes the indication of different alarm levels through graded early warning. The forklift operator obtains warning information through vision and hearing, and makes safe operations in different scenarios.

[0033] It should be noted that the relevant information displayed on the display screen includes identity recognition management using the display screen combined with the electronic work badge. The electronic work badge worn by the operator is bound one by one to the micro-tag worn on the head. The tag worn by the operator on the helmet continuously sends Bluetooth signals to the surrounding area. After the host receives the tag signal, it calculates the distance change of the tag. After entering the warning range, the display screen displays the operator's identity number in real time.

[0034] It should also be noted that the display screen not only displays real-time alarm information, but also further enhances the accuracy and traceability of personnel management through the identity recognition function of the electronic work badge. The electronic work badge is bound to the micro-tag to achieve personnel identification, improve the integrity of the accident record, and provide effective data support for subsequent operations and management.

[0035] It should also be noted that by combining the two reminder methods of sound and light alarm and display screen prompt, when the operating personnel enter the warning range, the alarm reminds the personnel through sound and light signals, and the relevant information is displayed on the display screen. This multiple reminder method effectively makes up for the deficiency of a single reminder method that may be ignored in a noisy environment. Through the multiple reminder mechanism, the system triggers the corresponding alarm level when entering different warning areas, so that the transmission of the alarm signal is still clearly discernible in a high-noise working environment. The personnel number and distance data displayed in real time on the display screen enable the forklift driver to quickly identify the risk personnel and their location, enhancing the accuracy and transparency of management. This multiple reminder method ensures that the forklift operator can respond in time in a complex environment and improves the effect of safety precautions.

[0036] S3: Record alarm events and related information to optimize the operation process.

[0037] Furthermore, recording alarm events and related information includes recording detailed information of each alarm event, including alarm number, distance data and alarm time, and recording distance data and personnel information at the specific alarm time each time a low-frequency or high-frequency alarm event occurs.

[0038] It should be noted that optimizing the operation process includes analyzing the risk distribution of the working environment through the RSSI signal change pattern, analyzing the activity frequency and alarm triggering of forklifts in different areas based on the RSSI value change trend, optimizing the forklift operation path and identifying risk areas, and guiding the division of risk areas and adjustment of warning areas.

[0039] It should also be noted that the system records each alarm event in detail, including the alarm number, distance data, alarm time, etc., and optimizes the operation path and divides the risk area by analyzing the RSSI signal change trend. This design not only realizes event recording, but also has a guiding role in future processes. Traditional forklift warning systems generally lack the ability to record and analyze alarm events in detail, and it is difficult to support managers to effectively optimize processes. Through detailed alarm records and RSSI change pattern analysis, the system can identify high-frequency risk areas and optimize operation paths, thereby improving operation efficiency and reducing the probability of accidents. The analysis and application of this alarm data enables the system to have the ability to transform from "passive protection" to "active optimization", providing a data basis for intelligent safety management, and has practicality and management value.

[0040] Example 2, reference Figure 2-Figure 3 , which is an embodiment of the present invention, provides a forklift safety distance warning method based on Bluetooth ranging. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through economic benefit calculation and simulation experiments.

[0041] In order to verify the effectiveness of the forklift safety distance warning system based on Bluetooth ranging, refer to Figure 2 The experiment prepared intelligent control and early warning equipment installed on multiple forklifts, including AI intelligent controllers, industrial display screens, sound and light alarm devices, power modules, alarm release switches, infrared cameras and connecting harnesses. At the same time, micro base stations and head-mounted micro tags were set up to cooperate with electronic work badges to realize real-time distance detection and early warning functions between forklifts and operators. This system uses low-power Bluetooth (BLE) technology to achieve real-time monitoring of operators approaching forklifts through RSSI (received signal strength indication) algorithm, and evaluates the distance between operators and forklifts based on the attenuation change of RSSI values. The experiment also set up 6-meter and 3-meter warning ranges in the warehouse area, corresponding to low-frequency alarms and high-frequency alarms, respectively, to verify the effectiveness of the graded early warning mechanism. The experiment first installed micro base stations at the entrance of the warehouse and on the top of the forklift. By fixing the Bluetooth signal transmitter and receiver, the system can cover the movement path of operators in the entire warehouse. Operators wear head-mounted micro tags and electronic work badges. The micro tags send Bluetooth signals at any time and feed back to the AI ​​intelligent controller on the forklift. Combined with the personnel number displayed on the work badge, the identity and current location of the operator can be identified on the industrial display screen. Figure 3 The system will continuously monitor the signal strength. When the operator enters the low-frequency warning range of 6 meters, the strength of the RSSI signal detected is between -55 and -65dBm, triggering the low-frequency sound and light alarm. The sound and light alarm emits a lower sound and light prompt, and the alarm information is displayed on the display screen simultaneously to remind the forklift driver and the operator to keep a safe distance and prevent the operator from getting closer. If the operator continues to approach within 3 meters (RSSI signal attenuates to -45 to -55dBm), the high-frequency alarm will be automatically triggered. At this time, the system upgrades the alarm level, and the sound and light alarm emits a stronger sound and light signal. The display screen shows the operator's real-time distance, identity number and specific alarm time, and immediately activates the emergency stop function to stop the forklift in the shortest time, thereby effectively avoiding the risk of collision. During the entire experiment, detailed information on each alarm event will be recorded, including the type of alarm (low frequency or high frequency), the operator's identity, distance data and alarm time, etc. In addition, the system also records the forklift's activity path and alarm triggering frequency to analyze the risk distribution in different areas of the warehouse, optimize the forklift's operation path, and provide data support for subsequent safety improvements in the operating environment.

[0042] Example 3, reference Figure 4 , which is an embodiment of the present invention, provides a forklift safety distance warning system based on Bluetooth ranging, including a distance detection module, a multiple reminder module, and an information recording module.

[0043] The distance detection module is used to detect the distance between the forklift and the operator based on the RSSI signal strength algorithm; the multiple reminder module is used to issue an audible and visual alarm and display relevant information on the display screen when the operator enters the warning range through multiple reminders; the information recording module is used to record alarm events and related information to optimize the operation process.

[0044] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc. Various media that can store program codes.

[0045] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0046] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering, or processing in another suitable manner as necessary, and then stored in a computer memory.

[0047] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc. It should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not limited. Although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A forklift safety distance warning method based on Bluetooth ranging, characterized in that: include: Detect the distance between the forklift and the operator based on the RSSI signal strength algorithm; Through multiple reminder methods, when the operator enters the warning range, an audible and visual alarm is issued and relevant information is displayed on the display screen; Record alarm events and related information to optimize operating procedures.

2. The forklift safety distance warning method based on Bluetooth ranging as claimed in claim 1, characterized in that: The RSSI signal strength algorithm includes an RSSI value based on the received signal strength indication, which reflects the distance between the forklift and the personnel. The RSSI signal weakens as the distance between the operator and the forklift increases. By continuously monitoring the changes in the RSSI value, the distance within the range of 6 meters and 3 meters is detected. When the system detects that the RSSI signal reaches the threshold of the range of 6 meters or 3 meters, the low-frequency and high-frequency alarms are triggered respectively to prompt the operator to maintain a safe distance.

3. The forklift safety distance warning method based on Bluetooth ranging as claimed in claim 2, characterized in that: The detection of the distance between the forklift and the operator includes adopting a graded warning mechanism, and the triggering mechanism of the low-frequency alarm and the high-frequency alarm is based on different distance ranges; When the operator enters the 6-meter range, the host sends out a low-frequency sound and light alarm to remind the forklift driver and the operator to keep a safe distance and prevent the operator from getting closer to the forklift; When a person approaches within the 3-meter danger range, the system automatically upgrades the alarm level, triggers a high-frequency sound and light alarm, and simultaneously activates the emergency stop function to prevent collision risks.

4. The forklift safety distance warning method based on Bluetooth ranging as claimed in claim 3, characterized in that: The multiple reminder methods include sound and light alarms and display screen prompts. When an operator enters the alarm range, the alarm prompts through sound and flashing lights. At the same time, the display screen displays the alarm information in real time, including the operator's number, distance and alarm time, to identify the risk personnel and their location; The display's real-time display function optimizes indications for different alarm levels through graded warnings. Forklift operators receive warning information through both vision and hearing, and make safe operations in different scenarios.

5. The forklift safety distance warning method based on Bluetooth ranging as claimed in claim 4, characterized in that: The display of relevant information on the display screen includes identity recognition management using the display screen in combination with an electronic work badge. The electronic work badge worn by the operator is bound one by one to the micro-tag worn on the head. The tag worn by the operator on the helmet continuously sends Bluetooth signals to the surrounding area. After the host receives the tag signal, it calculates the distance change of the tag. After entering the warning range, the display screen displays the operator's identity number in real time.

6. The forklift safety distance warning method based on Bluetooth ranging as claimed in claim 5, characterized in that: The recording of alarm events and related information includes recording detailed information of each alarm event, including alarm number, distance data and alarm time, and recording distance data and personnel information at the specific alarm time each time a low-frequency or high-frequency alarm event occurs.

7. The forklift safety distance warning method based on Bluetooth ranging as claimed in claim 6, characterized in that: The optimized operation process includes analyzing the risk distribution of the working environment through the RSSI signal change rules, analyzing the activity frequency and alarm triggering of forklifts in different areas in combination with the RSSI value change trend, optimizing the forklift operation path and identifying the risk area, and guiding the risk area division and warning area adjustment.

8. A system using the forklift safety distance warning method based on Bluetooth ranging as claimed in any one of claims 1 to 7, characterized in that: Including distance detection module, multiple reminder module, information recording module; The distance detection module is used to detect the distance between the forklift and the operator based on the RSSI signal strength algorithm; The multiple reminder module is used to issue an audible and visual alarm and display relevant information on a display screen when an operator enters the warning range through multiple reminder methods; The information recording module is used to record alarm events and related information to optimize the operation process.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the forklift safety distance warning method based on Bluetooth ranging as described in any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the forklift safety distance warning method based on Bluetooth ranging according to any one of claims 1 to 7 are implemented.

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