Safety distance early warning device for electric hoisting

Abstract

The invention provides a safe distance early warning device for electric hoisting, which comprises a distance measuring terminal mounted on a hoisting arm and a handheld terminal in communication connection with the distance measuring terminal, and is characterized in that the distance measuring terminal comprises a shell, an induction coil arranged on the shell and a first communication module; the acquisition module, the main control module, the first sound-light alarm module and the first power supply module are arranged in the shell; the handheld terminal comprises a handheld shell, a second communication module, a display operation module, a second sound-light alarm module, a control module and a second power module, wherein the second communication module, the display operation module and the second sound-light alarm module are arranged on the handheld shell, and the control module and the second power module are arranged in the handheld shell. The acquisition module is used for acquiring electric field parameters sensed by the induction coil, comparing the electric field parameters with an alarm threshold provided by the main control module, when the electric field parameters exceed the alarm threshold, sending alarm information to the first acousto-optic alarm module and the main control module at the same time, and sending an acousto-optic alarm through the first acousto-optic alarm module; and the main control module sends alarm information to the handheld terminal through the first communication module.

Description

Technical Field

[0001] The invention provides an early warning device, in particular a safety distance early warning device for electric hoisting, belonging to the technical field of electric power engineering and electrical automation. Background Art

[0002] High-voltage lines are high-voltage power lines. If safety warning measures are not taken when hoisting equipment or objects under high-voltage lines, the following hazards may occur: (1) Electric shock accidents: Construction under high-voltage lines is prone to electric shock accidents. Once a person touches the high-voltage line, the current will pass through the human body, causing electric shock injuries or even death. This accident often occurs when the construction worker unconsciously touches the high-voltage line or accidentally touches a conductive object; (2) Fire and explosion accidents: During construction under high-voltage lines, it is sometimes necessary to use open flames or high-temperature tools for welding, cutting, etc. If the safe distance between the fire source and the power source is not strictly controlled, it is easy to cause an explosion accident. The explosion accident will not only cause casualties and property losses, but also have a serious impact on the surrounding environment; (3) Electric shock accidents: During construction under high-voltage lines, construction workers often need to use various mechanical equipment and tools. If these equipment are not insulated and maintained according to standards, it is easy to cause electric shock accidents. At the same time, if the construction workers do not use these equipment correctly, it will also increase the risk of electric shock accidents. In power construction and hoisting operations, it is crucial to ensure a safe distance between the hoisting equipment and the high-voltage line.

[0003] Traditional safety control means mainly rely on the operator's experience and visual judgment. However, this method has great subjectivity and uncertainty, and it is difficult to ensure that every operation can achieve absolute safety. With the advancement of science and technology, some new warning technologies have also begun to be applied to hoisting operations. For example, a patent proposes a crane boom safety distance warning device and method based on laser radar. The device collects laser point cloud data through laser radar, and uses a processor to perform spatial cubic grid division and distance calculation, thereby realizing accurate warning of the safety distance between the boom and the hoisted object. Although this technology improves the accuracy of the warning, in practical applications, it is expensive and has relatively high requirements for environmental and climatic conditions. In addition, although the existing hoisting safety distance warning device improves the safety of the operation to a certain extent, it still has deficiencies in stability and cost. In addition, the equipment using laser radar for ranging is large in size, and it is difficult to carry and inconvenient to operate when working in the field. Therefore, it is necessary to improve the existing technology. Summary of the invention

[0004] In order to solve the problems that the existing safety distance measurement for electric power hoisting mainly relies on personnel experience and visual judgment, and the existing distance measuring equipment has poor stability, high requirements on environmental climate, and is too large to carry, the present invention provides a safety distance warning device for electric power hoisting.

[0005] The present invention is completed by the following technical scheme: a safety distance warning device for electric hoisting, comprising a distance measuring terminal installed on a boom, and a handheld terminal connected to the distance measuring terminal for communication, wherein:

[0006] The ranging terminal includes a shell, an induction coil and a first communication module arranged on the shell, and an acquisition module, a main control module, a first sound and light alarm module, and a first power supply module arranged in the shell; the main control module is electrically connected to the acquisition module, the first sound and light alarm module, and the first communication module; the acquisition module is electrically connected to the induction coil; the first power supply module is electrically connected to the acquisition module, the main control module, and the first sound and light alarm module for power supply; the acquisition module is used to acquire the electric field parameters sensed by the induction coil, and compare them with the alarm threshold provided by the main control module. When the electric field parameters exceed the alarm threshold, an alarm message is simultaneously sent to the first sound and light alarm module and the main control module, and an sound and light alarm is sent through the first sound and light alarm module, and the main control module sends an alarm message to the handheld terminal through the first communication module;

[0007] The handheld terminal includes a handheld shell, a second communication module, a display operation module, and a second sound and light alarm module arranged on the handheld shell, and a control module and a second power supply module arranged in the handheld shell; the control modules are electrically connected to the display operation module, the second communication module, and the second sound and light alarm module, and the second power supply modules are electrically connected to the control module, the display operation module, the second communication module, and the second sound and light alarm module for power supply; the second communication module is communicatively connected to the first communication module; the display operation module is used to set and input an alarm threshold, and send the set and input alarm threshold to the control module for storage, and then send the alarm threshold setting data to the main control module of the ranging terminal through the second communication module and the first communication module, and at the same time receive the alarm information transmitted back by the main control module of the ranging terminal, and send an sound and light alarm through the second sound and light alarm module.

[0008] Furthermore, the acquisition module of the ranging terminal adopts a chip model JW0818, and the first pin of the JW0818 chip is connected to the induction coil through capacitors C2 and C8, and is used to receive the electric field value sensed by the induction coil and integrated after high-frequency filtering by capacitors C2 and C8. The sixth pin of the JW0818 chip is connected to the main control module, and is used to receive the alarm threshold data sent by the main control module.

[0009] Furthermore, the main control module of the ranging terminal adopts a single-chip microcomputer of model STM32F103C8T6, and the 21st pin of the STM32F103C8T6 single-chip microcomputer is connected to the 6th pin of the acquisition module JW0818 chip, for sending alarm threshold data to the acquisition module; the 18th pin of the STM32F103C8T6 single-chip microcomputer is connected to the 2nd pin of the first sound and light alarm module, and an sound and light alarm is issued through the 7th pin of the first sound and light alarm module; the 19th and 20th pins of the STM32F103C8T6 single-chip microcomputer are connected to the 2nd and 3rd pins of the first communication module, and the first communication module of the ranging terminal adopts a radio frequency module of model Ling-TR.

[0010] Furthermore, the shell is provided with a strap or a magnet for fixing the ranging terminal on the crane arm or the hanging object.

[0011] Furthermore, the handheld terminal control module adopts a single-chip microcomputer of model STM32F103C8T6, and the 30th and 31st pins of the STM32F103C8T6 single-chip microcomputer are connected to the 19th and 20th pins of the single-chip microcomputer of the ranging terminal main control module through the first and second communication modules; the 12th and 13th pins of the STM32F103C8T6 single-chip microcomputer are connected to the display operation module through the interface CN72 and 3 pins, and the display operation module adopts the Taojinchi serial port screen for visual operation and UI interaction; the 45th pin of the STM32F103C8T6 single-chip microcomputer is connected to the 2nd pin of the second sound and light alarm module, which is used to send the alarm information to the 2nd pin of the second sound and light alarm module, and then send out the sound and light alarm through the 7th pin.

[0012] Furthermore, the first and second communication modules both adopt a radio frequency module of model Ling-TR, and the 2nd and 3rd pins of the two Ling-TR radio frequency modules are respectively connected to the 30th and 31st pins of the main control module STM32F103C8T6 microcontroller of the ranging terminal, and the 19th and 20th pins of the microcontroller of the handheld terminal STM32F103C8T6, for transmitting alarm threshold data and alarm signals.

[0013] Furthermore, the shell is also provided with a switch and a charging socket, and the switch and the charging socket are electrically connected to the power module and are used to turn on or off the power or charge the power module.

[0014] The present invention has the following advantages and effects:

[0015] 1. The induction electricity collection function module is used, which is convenient to be arranged on the crane hoisting object. When in use, it is fixed to the position of the boom, hook or hoisting object closest to the charged body, which increases the accuracy of the early warning;

[0016] 2. The early warning device adopts modular design, and the components are simple to connect, easy to disassemble and replace. At the same time, it uses low-cost, high-performance components and materials to reduce the overall cost and maintenance cost;

[0017] 3. The acquisition module filters and integrates the current data of the induction coil to obtain the final judgment current value, which can be compared with the current data generated by the safe distance. If the calculated current is greater than the specified value, an alarm can be sounded. The sensitivity can also be modified on the handheld end according to the on-site situation to reduce false alarms caused by environmental interference, ensuring that the early warning device can maintain an efficient and stable working state in various complex environments, thereby improving its scope of application and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 1 It is a front view of the handheld terminal of the present invention;

[0020] Figure 2 The figure is a rear view of the handheld terminal of the present invention with the rear cover removed;

[0021] Figure 3 This is a front view of the ranging terminal of the present invention;

[0022] Figure 4 The figure is a rear view of the ranging terminal of the present invention with part of the housing removed;

[0023] Figure 5 It is a schematic diagram of the handheld terminal module of the present invention;

[0024] Figure 6 It is a schematic diagram of the distance measurement terminal module of the present invention;

[0025] Figure 7 This is a circuit diagram of the main control module of the ranging terminal of the present invention;

[0026] Figure 8 The distance measurement terminal acquisition module and electric field sensing circuit diagram of the present invention;

[0027] Fig. 9 This is a circuit diagram of the first communication module of the ranging terminal of the present invention;

[0028] Fig.10 A circuit diagram of a first sound and light alarm module of the present invention;

[0029] Fig.11is a circuit diagram of a control module of the present invention;

[0030] Fig.12 An interface circuit diagram for connecting a display operation module of the present invention;

[0031] Fig.13 is a circuit diagram of a second communication module of the present invention;

[0032] Fig.14 This is a circuit diagram of the second sound and light alarm module of the present invention.

[0033] In the figure, 1. handheld terminal, 2. display operation module, 3. charging socket, 4. switch, 5. second sound and light alarm module, 6. second power supply module, 7. ranging terminal, 8. strap, 9. induction coil, 10. first power supply module. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Example 1

[0036] like Figure 1-Figure 4 As shown, the electric power hoisting safety distance warning device provided by the present invention includes a distance measuring terminal 7 installed on the boom, and a handheld terminal 1 connected to the distance measuring terminal 7 for communication, wherein:

[0037] The ranging terminal 7 includes a shell, an induction coil 9 arranged on the shell, a first communication module, a collection module, a main control module, a first sound and light alarm module, and a first power supply module 10 arranged in the shell; the main control module is electrically connected to the collection module, the first sound and light alarm module, and the first communication module; the collection module is electrically connected to the induction coil 9; the first power supply module 10 is electrically connected to the collection module, the main control module, and the first sound and light alarm module for power supply; the collection module is used to collect the electric field parameters sensed by the induction coil 9, and compare them with the alarm threshold provided by the main control module. When the electric field parameters exceed the alarm threshold, an alarm message is simultaneously sent to the first sound and light alarm module and the main control module, and an sound and light alarm is sent through the first sound and light alarm module, and the main control module sends an alarm message to the handheld terminal 1 through the first communication module;

[0038] The handheld terminal 1 includes a handheld shell, a second communication module, a display operation module 2, and a second sound and light alarm module 5 arranged on the handheld shell, and a control module and a second power supply module 6 arranged in the handheld shell; the control modules are electrically connected to the display operation module 2, the second communication module, and the second sound and light alarm module 5, and the second power supply module 6 is electrically connected to the control module, the display operation module 2, the second communication module, and the second sound and light alarm module 5 for power supply; the second communication module is communicatively connected to the first communication module; the display operation module 2 is used to set and input an alarm threshold, and send the set and input alarm threshold to the control module for storage, and then send the alarm threshold setting data to the main control module of the ranging terminal through the second communication module and the first communication module, and at the same time receive the alarm information transmitted back by the main control module of the ranging terminal, and send an sound and light alarm through the second sound and light alarm module 5.

[0039] In this embodiment, the alarm threshold data can be pre-set through the display operation module 2. After the setting, the data is transmitted to the control module through the UART protocol by the serial communication interface on the display operation module 2. The control module then encodes the alarm threshold data. After the encoding, the alarm threshold data is stabilized and amplified by the second communication module and sent to the ranging terminal by the antenna.

[0040] In this embodiment, the second communication module receives the alarm signal sent by the ranging terminal, and transmits the alarm signal to the control module for decoding processing. After the decoding processing is completed, the control module generates an alarm start code to enable the second sound and light alarm module 5 to emit a sound alarm and a light alarm.

[0041] As an example, Figure 8 As shown, the acquisition module of the ranging terminal adopts a chip of model JW0818. The first pin of the JW0818 chip is connected to the induction coil through capacitors C2 and C8, and is used to receive the electric field value sensed by the induction coil and integrated after high-frequency filtering by capacitors C2 and C8. The sixth pin of the JW0818 chip is connected to the main control module, and is used to receive the alarm threshold data sent by the main control module.

[0042] In this embodiment, when the induction coil 9 approaches a charged device, the alternating current inside the coil will generate a magnetic field. This magnetic field will cause the current in the induction coil to change. The changed current is input into the JW0818 chip after high-frequency filtering and integration by the C2 and C8 capacitors. The JW0818 chip uses a mean filtering algorithm to calculate the electric field parameters and transmits them to the main control module for data comparison.

[0043] In this embodiment, the JW0818 chip and the induction coil are both powered by 3.3V voltage.

[0044] As an example, Figure 7 , Figure 8 , Fig. 9 , Fig.10 As shown, the main control module of the ranging terminal adopts a single-chip microcomputer of model STM32F103C8T6, and the 21st pin of the STM32F103C8T6 single-chip microcomputer is connected to the 6th pin of the acquisition module JW0818 chip, which is used to send the alarm threshold data to the acquisition module; the 18th pin of the STM32F103C8T6 single-chip microcomputer is connected to the 2nd pin of the first sound and light alarm module, and the sound and light alarm is issued through the 7th pin of the first sound and light alarm module; the 19th and 20th pins of the STM32F103C8T6 single-chip microcomputer are connected to the 2nd and 3rd pins of the first communication module, and the first communication module of the ranging terminal adopts a radio frequency module of model Ling-TR.

[0045] In this embodiment, the STM32F103C8T6 single chip microcomputer is powered by a 3.3V voltage.

[0046] As an embodiment, a strap 8 is provided on the housing for fixing the ranging terminal 7 on the crane arm.

[0047] As an embodiment, the housing is provided with a switch, and the switch is electrically connected to the first power module 10 and is used to turn on or off the power supply.

[0048] As an example, Fig.11 , Fig.12 , Fig.13 , Fig.14 As shown, the handheld terminal control module adopts a single-chip microcomputer of model STM32F103C8T6, and the 30th and 31st pins of the STM32F103C8T6 single-chip microcomputer are connected to the 19th and 20th pins of the single-chip microcomputer of the ranging terminal main control module through the first and second communication modules; the 12th and 13th pins of the STM32F103C8T6 single-chip microcomputer are connected to the display operation module through the interface CN72 and 3 pins, and the display operation module adopts the Taojinchi serial port screen for visual operation and UI interaction; the 45th pin of the STM32F103C8T6 single-chip microcomputer is connected to the 2nd pin of the second sound and light alarm module, which is used to send the alarm information to the 2nd pin of the second sound and light alarm module, and then send the sound and light alarm through the 7th pin.

[0049] The STM32F103C8T6 microcontroller is powered by 3.3V.

[0050] The Taojinchi serial port screen is powered by 5V voltage.

[0051] As an embodiment, the first and second communication modules both use a radio frequency module of model Ling-TR, and the 2nd and 3rd pins of the two Ling-TR radio frequency modules are respectively connected to the 30th and 31st pins of the main control module STM32F103C8T6 single-chip microcomputer of the ranging terminal, and the 19th and 20th pins of the single-chip microcomputer of the handheld terminal STM32F103C8T6, for transmitting alarm threshold data and alarm signals. The Ling-TR_433 is powered by 3.3V voltage.

[0052] As an embodiment, the handheld housing is also provided with a switch and a charging socket, and the switch and the charging socket are both electrically connected to the power module and are used to turn on or off the power or charge the power module.

[0053] In this embodiment, Figure 1 , Figure 2 As shown, the handheld housing is also provided with a switch 4 and a charging socket 3, and the switch 4 and the charging socket 3 are both electrically connected to the second power module 6 for turning on and off the power or charging the power module.

[0054] In this embodiment, the first communication module receives the alarm threshold data sent by the second communication module through the antenna, and then decodes the alarm threshold data through the main control module. The decoded data is stored in the control module. When working, the acquisition module transmits the calculated electric field parameters generated by the induction coil 9 to the main control module, and the main control module compares the electric field parameters and the alarm threshold data. When the electric field parameters are greater than the alarm threshold, the main control module generates an alarm start code to enable the first sound and light alarm module to emit a sound alarm and a light alarm. At the same time, the main control module also encodes the alarm signal. The encoded alarm signal is stabilized and amplified by the first communication module and then sent to the handheld terminal by the antenna.

[0055] Example 2

[0056] like Figure 1-Figure 4 As shown, the electric power hoisting safety distance warning device provided by the present invention includes a distance measuring terminal 7 installed on the boom, and a handheld terminal 1 connected to the distance measuring terminal 7 for communication, wherein:

[0057] The ranging terminal 7 includes a shell, an induction coil 9 arranged on the shell, a first communication module, a collection module, a main control module, a first sound and light alarm module, and a first power supply module 10 arranged in the shell; the main control module is electrically connected to the collection module, the first sound and light alarm module, and the first communication module; the collection module is electrically connected to the induction coil 9; the first power supply module 10 is electrically connected to the collection module, the main control module, and the first sound and light alarm module for power supply; the collection module is used to collect the electric field parameters sensed by the induction coil 9, and compare them with the alarm threshold provided by the main control module. When the electric field parameters exceed the alarm threshold, an alarm message is simultaneously sent to the first sound and light alarm module and the main control module, and an sound and light alarm is sent through the first sound and light alarm module, and the main control module sends an alarm message to the handheld terminal 1 through the first communication module;

[0058] The handheld terminal 1 includes a handheld shell, a second communication module, a display operation module 2, and a second sound and light alarm module 5 arranged on the handheld shell, and a control module and a second power supply module 6 arranged in the handheld shell; the control modules are electrically connected to the display operation module 2, the second communication module, and the second sound and light alarm module 5, and the second power supply module 6 is electrically connected to the control module, the display operation module 2, the second communication module, and the second sound and light alarm module 5 for power supply; the second communication module is communicatively connected to the first communication module; the display operation module 2 is used to set and input an alarm threshold, and send the set and input alarm threshold to the control module for storage, and then send the alarm threshold setting data to the main control module of the ranging terminal through the second communication module and the first communication module, and at the same time receive the alarm information transmitted back by the main control module of the ranging terminal, and send an sound and light alarm through the second sound and light alarm module 5.

[0059] In this embodiment, the alarm threshold data can be pre-set through the display operation module 2. After the setting, the data is transmitted to the control module through the UART protocol by the serial communication interface on the display operation module 2. The control module then encodes the alarm threshold data. After the encoding, the alarm threshold data is stabilized and amplified by the second communication module and sent to the ranging terminal by the antenna.

[0060] In this embodiment, the second communication module receives the alarm signal sent by the ranging terminal, and transmits the alarm signal to the control module for decoding processing. After the decoding processing is completed, the control module generates an alarm start code to enable the second sound and light alarm module 5 to emit a sound alarm and a light alarm.

[0061] As an example, Figure 8As shown, the acquisition module of the ranging terminal adopts a chip of model JW0818. The first pin of the JW0818 chip is connected to the induction coil through capacitors C2 and C8, and is used to receive the electric field value sensed by the induction coil and integrated after high-frequency filtering by capacitors C2 and C8. The sixth pin of the JW0818 chip is connected to the main control module, and is used to receive the alarm threshold data sent by the main control module.

[0062] In this embodiment, when the induction coil 9 approaches a charged device, the alternating current inside the coil will generate a magnetic field. This magnetic field will cause the current in the induction coil to change. The changed current is input into the JW0818 chip after high-frequency filtering and integration by the C2 and C8 capacitors. The JW0818 chip uses a mean filtering algorithm to calculate the electric field parameters and transmits them to the main control module for data comparison.

[0063] In this embodiment, the JW0818 chip and the induction coil are both powered by 3.3V voltage.

[0064] As an example, Figure 7 , Figure 8 , Fig. 9 , Fig.10 As shown, the main control module of the ranging terminal adopts a single-chip microcomputer of model STM32F103C8T6, and the 21st pin of the STM32F103C8T6 single-chip microcomputer is connected to the 6th pin of the acquisition module JW0818 chip, which is used to send the alarm threshold data to the acquisition module; the 18th pin of the STM32F103C8T6 single-chip microcomputer is connected to the 2nd pin of the first sound and light alarm module, and the sound and light alarm is issued through the 7th pin of the first sound and light alarm module; the 19th and 20th pins of the STM32F103C8T6 single-chip microcomputer are connected to the 2nd and 3rd pins of the first communication module, and the first communication module of the ranging terminal adopts a radio frequency module of model Ling-TR.

[0065] In this embodiment, the STM32F103C8T6 single chip microcomputer is powered by a 3.3V voltage.

[0066] As an embodiment, a magnet is provided on the housing for fixing the ranging terminal 7 on the crane arm.

[0067] As an embodiment, the housing is provided with a switch, and the switch is electrically connected to the first power module 10 and is used to turn on or off the power supply.

[0068] As an example, Fig.11 , Fig.12 , Fig.13 , Fig.14As shown, the handheld terminal control module adopts a single-chip microcomputer of model STM32F103C8T6, and the 30th and 31st pins of the STM32F103C8T6 single-chip microcomputer are connected to the 19th and 20th pins of the single-chip microcomputer of the ranging terminal main control module through the first and second communication modules; the 12th and 13th pins of the STM32F103C8T6 single-chip microcomputer are connected to the display operation module through the interface CN72 and 3 pins, and the display operation module adopts the Taojinchi serial port screen for visual operation and UI interaction; the 45th pin of the STM32F103C8T6 single-chip microcomputer is connected to the 2nd pin of the second sound and light alarm module, which is used to send the alarm information to the 2nd pin of the second sound and light alarm module, and then send the sound and light alarm through the 7th pin.

[0069] The STM32F103C8T6 microcontroller is powered by 3.3V.

[0070] The Taojinchi serial port screen is powered by 5V voltage.

[0071] As an embodiment, the first and second communication modules both use a radio frequency module of model Ling-TR, and the 2nd and 3rd pins of the two Ling-TR radio frequency modules are respectively connected to the 30th and 31st pins of the main control module STM32F103C8T6 single-chip microcomputer of the ranging terminal, and the 19th and 20th pins of the single-chip microcomputer of the handheld terminal STM32F103C8T6, for transmitting alarm threshold data and alarm signals. The Ling-TR_433 is powered by 3.3V voltage.

[0072] As an embodiment, the handheld housing is also provided with a switch and a charging socket, and the switch and the charging socket are both electrically connected to the power module and are used to turn on or off the power or charge the power module.

[0073] In this embodiment, Figure 1 , Figure 2 As shown, the handheld housing is also provided with a switch 4 and a charging socket 3, and the switch 4 and the charging socket 3 are both electrically connected to the second power module 6 for turning on and off the power or charging the power module.

[0074] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0075] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A safety distance warning device for electric hoisting, characterized in that It includes a distance measuring terminal installed on a boom, and a handheld terminal connected to the distance measuring terminal for communication, wherein: The ranging terminal includes a shell, an induction coil and a first communication module arranged on the shell, and an acquisition module, a main control module, a first sound and light alarm module, and a first power supply module arranged in the shell; the main control module is electrically connected to the acquisition module, the first sound and light alarm module, and the first communication module; the acquisition module is electrically connected to the induction coil; the first power supply module is electrically connected to the acquisition module, the main control module, and the first sound and light alarm module for power supply; the acquisition module is used to acquire the electric field parameters sensed by the induction coil, and compare them with the alarm threshold provided by the main control module. When the electric field parameters exceed the alarm threshold, an alarm message is simultaneously sent to the first sound and light alarm module and the main control module, and an sound and light alarm is sent through the first sound and light alarm module, and the main control module sends an alarm message to the handheld terminal through the first communication module; The handheld terminal includes a handheld shell, a second communication module, a display operation module, and a second sound and light alarm module arranged on the handheld shell, and a control module and a second power supply module arranged in the handheld shell; the control modules are electrically connected to the display operation module, the second communication module, and the second sound and light alarm module, and the second power supply modules are electrically connected to the control module, the display operation module, the second communication module, and the second sound and light alarm module for power supply; the second communication module is communicatively connected to the first communication module; the display operation module is used to set and input an alarm threshold, and send the set and input alarm threshold to the control module for storage, and then send the alarm threshold setting data to the main control module of the ranging terminal through the second communication module and the first communication module, and at the same time receive the alarm information transmitted back by the main control module of the ranging terminal, and send an sound and light alarm through the second sound and light alarm module.

2. The safety distance warning device for electric hoisting according to claim 1 is characterized in that The acquisition module of the ranging terminal adopts a chip model JW0818. The first pin of the JW0818 chip is connected to the induction coil through capacitors C2 and C8, and is used to receive the electric field value sensed by the induction coil and integrated after high-frequency filtering by capacitors C2 and C8. The sixth pin of the JW0818 chip is connected to the main control module, and is used to receive the alarm threshold data sent by the main control module.

3. The safety distance warning device for electric power hoisting according to claim 1 is characterized in that The main control module of the ranging terminal adopts a single-chip microcomputer of model STM32F103C8T6, and the 21st pin of the STM32F103C8T6 single-chip microcomputer is connected to the 6th pin of the acquisition module JW0818 chip for sending alarm threshold data to the acquisition module.

4. The safety distance warning device for electric power hoisting according to claim 1 is characterized in that The 18th pin of the STM32F103C8T6 single-chip microcomputer is connected to the 2nd pin of the first sound and light alarm module, and the sound and light alarm is issued through the 7th pin of the first sound and light alarm module; the 19th and 20th pins of the STM32F103C8T6 single-chip microcomputer are connected to the 2nd and 3rd pins of the first communication module, and the first communication module of the ranging terminal adopts a radio frequency module with model Ling-TR.

5. The safety distance warning device for electric power hoisting according to claim 1 is characterized in that The shell is provided with a strap or a magnet.

6. The safety distance warning device for electric power hoisting according to claim 1 is characterized in that The handheld terminal control module adopts a single-chip microcomputer of model STM32F103C8T6, and the 30th and 31st pins of the STM32F103C8T6 single-chip microcomputer are connected to the 19th and 20th pins of the single-chip microcomputer of the ranging terminal main control module through the first and second communication modules.

7. The safety distance warning device for electric power hoisting according to claim 1 is characterized in that The 12th and 13th pins of the STM32F103C8T6 single-chip microcomputer are connected to the display operation module through the interface CN72 and 3 pins. The display operation module adopts the Taojinchi serial port screen for visual operation and UI interaction; the 45th pin of the STM32F103C8T6 single-chip microcomputer is connected to the 2nd pin of the second sound and light alarm module, which is used to send the alarm information to the 2nd pin of the second sound and light alarm module, and then send out the sound and light alarm through the 7th pin.

8. The safety distance warning device for electric power hoisting according to claim 1 is characterized in that: The first and second communication modules both use a radio frequency module of model Ling-TR. The 2nd and 3rd pins of the two Ling-TR radio frequency modules are respectively connected to the 30th and 31st pins of the main control module STM32F103C8T6 microcontroller of the ranging terminal, and the 19th and 20th pins of the microcontroller of the handheld terminal STM32F103C8T6.

9. The safety distance warning device for electric power hoisting according to claim 1 is characterized in that The handheld housing is also provided with a switch and a charging socket, and both the switch and the charging socket are electrically connected to the second power module and are used to turn on and off the power or charge the power module.

10. The safety distance warning device for electric power hoisting according to claim 1 is characterized in that The housing is also provided with a switch, which is electrically connected to the first power module and is used to turn on and off the power supply.

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