A wireless audio and video information transmission device for an overhead tower crane

Abstract

The application discloses a wireless audio and video information transmission device for a high tower crane, which is characterized by comprising an audio and video collection module, an audio and video coding module, a laser communication module, an audio and video decoding module and an audio and video display module, wherein the modules are sequentially connected, that is, the audio and video collection module is connected with the audio and video coding module through a data transmission interface, the audio and video coding module is connected with the laser communication module, the laser communication module is connected with the audio and video decoding module, and the audio and video decoding module is connected with the audio and video display module, so that wireless transmission of audio and video information between the high tower crane and the ground is realized, the tower crane driver can intuitively obtain the situation of the working site, accurate operation is facilitated, and the safety and efficiency of construction are improved.

Description

Technical Field

[0001] This utility model relates to the field of communication technology, and more specifically, to a wireless audio and video information transmission device for elevated tower cranes. Background Technology

[0002] Tower cranes play a crucial role in construction, handling the lifting and transport of large quantities of building materials and equipment. However, communication for tower cranes has always been a challenge in the industry and a key focus of safety concerns. Currently, most companies use audio intercom for communication between the tower crane and ground personnel. However, this method has significant limitations. Because tower crane operators cannot directly observe the specific conditions at the ground work site, it is difficult to perform precise operations, which can easily lead to safety accidents and affect construction progress and quality. Therefore, there is an urgent need for a system that can achieve efficient and accurate communication to solve this problem. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a wireless audio and video information transmission device for elevated tower cranes. This device uses a wide-seat pneumatic gripper gripping method, which saves auxiliary time and improves efficiency.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A wireless audio and video information transmission device for elevated tower cranes includes an audio and video acquisition module, an audio and video encoding module, a laser communication module, an audio and video decoding module, and an audio and video display module. The modules are connected in sequence. Specifically, the audio and video acquisition module is connected to the audio and video encoding module via a data transmission interface, the audio and video encoding module is connected to the laser communication module, the latter is then connected to the audio and video decoding module, and the audio and video decoding module is connected to the audio and video display module.

[0006] Preferably, the audio and video acquisition module includes a camera acquisition chip, an image sensor, a microphone, an analog-to-digital converter, and a data transmission interface. The camera acquisition chip converts optical signals into electrical signals, and then the image sensor converts the electrical signals into digital signals. The microphone converts the electrical signals of sound into analog signals, and then the analog-to-digital converter converts them into digital signals, which are then transmitted to the audio and video encoding module through the data transmission interface.

[0007] Preferably, the audio and video encoding module includes an audio processing unit, a video processing unit, an audio and video encoding output interface, and a control unit. The audio processing unit includes a microphone input interface, an audio and video preprocessing chip, and an audio encoding chip. The video processing unit includes a video input interface, a video digital-to-analog converter, a video preprocessor, and a video encoding chip. The control unit is connected to both the audio processing unit and the video processing unit. The audio and video encoding output interface transmits the encoded signal to the laser communication module.

[0008] Preferably, the microphone input interface receives signals and transmits them to the audio and video processing chip, the audio and video processing chip preprocesses the audio signals, and the audio encoding chip is connected to the audio processing chip for signal amplification, filtering, and noise reduction;

[0009] The video input interface receives signals and transmits them to the video digital-to-analog converter. The video digital-to-analog converter is connected to the video processor. The video processor compresses the image and then transmits it to the video encoding chip. The audio and video encoding output interface receives the encoded and compressed signal.

[0010] The control unit includes an MCU and a memory, wherein the MCU is the core control unit and the memory includes a program memory and a data memory.

[0011] Preferably, the laser communication module includes a laser emitting unit, a laser collecting unit, and an optical antenna. The laser emitting unit includes a laser driver and a semiconductor laser. The laser driver receives encoded signals and converts the encoded audio and video digital signals into electrical signals suitable for driving the semiconductor laser. The semiconductor laser converts the electrical signals into optical signals.

[0012] The laser collection unit includes an optical detector and a signal amplifier;

[0013] The optical antenna connects the laser transmitting module and the laser receiving unit, and is used to transmit and receive laser signals.

[0014] Preferably, the audio and video decoding module includes a decoding chip, a storage unit, an audio and video input interface, and an audio and video interface. The storage unit includes a high-speed cache and a random access memory (RAM). The high-speed cache is used to temporarily store frequently accessed decoding data, and the random access memory (RAM) stores the data to be decoded and temporary data during the decoding process. The audio and video decoding output interface transmits the decoded signal to the audio and video display module.

[0015] Preferably, the audio and video display module includes a video display input interface, an audio display input interface, a display screen, and a speaker.

[0016] In addition, compared with the prior art, the advantages of this utility model are: through the coordinated work of the audio and video acquisition module, audio and video encoding module, laser communication module, audio and video decoding module and audio and video display module, wireless transmission of audio and video information between the elevated tower crane and the ground is realized, enabling the tower crane operator to intuitively obtain the situation at the work site, which helps him to carry out precise operation and improves the safety and efficiency of construction. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall module connection of this utility model;

[0018] Figure 2 This is a schematic diagram of the audio and video acquisition module of this utility model;

[0019] Figure 3 This is a schematic diagram of the audio and video encoding module of this utility model;

[0020] Figure 4 This is a schematic diagram of the laser communication module of this utility model;

[0021] Figure 5 This is a schematic diagram of the audio and video encoding module of this utility model;

[0022] Figure 6 This is a schematic diagram of the audio and video display module of this utility model. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] like Figure 1-6 As shown, a wireless audio and video information transmission device for elevated tower cranes includes an audio and video acquisition module, an audio and video encoding module, a laser communication module, an audio and video decoding module, and an audio and video display module, all connected in sequence. The audio and video acquisition module is assembled at the lower end of the crane's boom, providing a clear view of the operated object, facilitating observation by the crane operator. Personnel below can also communicate directly with the crane operator through this acquisition device. Video acquisition: The camera's video acquisition chip converts optical signals into electrical signals, which are then converted into digital signals by an image sensor. Audio acquisition: A microphone converts electrical sound signals into analog signals, which are then converted into digital signals by an analog-to-digital converter.

[0025] Audio and video capture module

[0026] 1. Camera acquisition chip IMX219:

[0027] 2. Image sensor: A CMOS sensor that works in conjunction with the camera chip.

[0028] 3. Audio synchronization utilizes timestamps. Firstly, a reference clock is selected, and each audio / video data block is timestamped according to the reference clock during encoding. During playback, playback is adjusted based on the audio / video timing and the reference clock; therefore, video and audio synchronization is a dynamic process.

[0029] 4. Microphone: Collects sound from the ground and has volume adjustment function.

[0030] 5. Analog-to-Digital Converter (ADC): Converts the analog signal output from the microphone into a digital signal to ensure audio fidelity.

[0031] 6. Audio and video acquisition and output interfaces: HDMI and USB interfaces are used to realize data transmission between the audio and video acquisition module and the audio and video encoding module.

[0032] Audio and video encoding module

[0033] 1. Audio processing section

[0034] (1) Audio encoding input interface: microphone input interface, which receives audio signals from the audio and video acquisition module via HDMI and USB interfaces.

[0035] (2) Audio preprocessing chip CS5368: performs amplification, filtering, noise reduction and other operations on the input audio signal.

[0036] (3) Audio encoding chip CSR8675: Encodes and compresses the pre-processed audio signal according to the selected format (AAC or MP3, etc.) to reduce the amount of audio data.

[0037] 2. Video processing section:

[0038] (1) Video encoding input interface: Receive video signals from the audio and video acquisition module via HDMI and USB interfaces.

[0039] (2) Video analog-to-digital converter (ADC): converts the input analog video signal into a digital video signal.

[0040] (3) Video preprocessor: preprocesses the digitized video, such as image compression.

[0041] (4) Video encoding chip Hi3516EV200: It uses H.265 encoding technology to encode and compress the pre-processed digital video signal.

[0042] 3. Control Unit

[0043] (1) MCU: STM32H750XBH6 is used as the core control unit to realize the management and control functions of the encoding module.

[0044] (2) Storage: including program storage Flash and random access memory RAM, which store temporary data and information during the encoding process.

[0045] 4. Audio and video encoding output interface: Outputs the encoded audio and video data to the laser communication module in a certain format.

[0046] Laser communication module

[0047] 1. Laser Emission Unit: Laser driver TI THS4531 and semiconductor laser II-VI HL6324MG. The laser driver is used to convert the encoded audio and video digital signals into electrical signals suitable for driving the semiconductor laser, and the semiconductor laser converts the electrical signals into optical signals.

[0048] 2. Laser Collection Unit: The laser receiving unit includes a photodetector S5973 and a signal amplifier TI LMH6629. The photodetector converts the received laser signal into an electrical signal, and the signal amplifier amplifies the weak electrical signal. An optical antenna is used to transmit and receive laser signals, improving the transmission and reception efficiency.

[0049] 3. Optical antenna: for transmitting and receiving laser signals.

[0050] Audio and video decoding module

[0051] 1. SMP8672 video decoding chip: decodes H.265 encoded video signals.

[0052] 2. Audio decoding chip CS4270: decodes AAC / MP3 format audio signals.

[0053] 3. Storage components: These include a cache and RAM. The cache is used to temporarily store frequently accessed decoded data, improving data retrieval speed; the RAM provides ample memory space for the decoding process, storing the data to be decoded and temporary data during decoding, ensuring the smooth progress of the decoding process.

[0054] 4. Audio and video decoding input and output interfaces: The input and output interfaces adopt HDMI and USB formats to ensure that data from the laser communication module can be received.

[0055] Audio and video display module

[0056] 1. Video display input interface: HDMI interface, which receives the analog video signal output by the decoding module and displays the image on the display screen.

[0057] 2. Audio input interface: 3.5mm audio interface. Receives analog audio signals output from the decoding module and plays sound through the speaker.

[0058] 3. Display screen: Displays video feed.

[0059] 4. Speaker: Plays sound.

[0060] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wireless audio and video information transmission device for elevated tower cranes, characterized in that: It includes an audio / video acquisition module, an audio / video encoding module, a laser communication module, an audio / video decoding module, and an audio / video display module, which are connected in sequence. Specifically, the audio / video acquisition module is connected to the audio / video encoding module via a data transmission interface, the audio / video encoding module is connected to the laser communication module, the laser communication module is then connected to the audio / video decoding module, and the audio / video decoding module is connected to the audio / video display module.

2. The wireless audio and video information transmission device for elevated tower cranes according to claim 1, characterized in that: The audio and video acquisition module includes a camera acquisition chip, an image sensor, a microphone, an analog-to-digital converter, and a data transmission interface. The camera acquisition chip converts optical signals into electrical signals, and then the image sensor converts the electrical signals into digital signals. The microphone converts the electrical signals of sound into analog signals, and then the analog-to-digital converter converts them into digital signals, which are then transmitted to the audio and video encoding module through the data transmission interface.

3. The wireless audio and video information transmission device for elevated tower cranes according to claim 1, characterized in that: The audio and video encoding module includes an audio processing unit, a video processing unit, an audio and video encoding output interface, and a control unit. The audio processing unit includes a microphone input interface, an audio and video preprocessing chip, and an audio encoding chip. The video processing unit includes a video input interface, a video digital-to-analog converter, a video preprocessor, and a video encoding chip. The control unit is connected to both the audio processing unit and the video processing unit. The audio and video encoding output interface transmits the encoded signal to the laser communication module.

4. The wireless audio and video information transmission device for elevated tower cranes according to claim 3, characterized in that: The microphone input interface receives signals and transmits them to the audio and video processing chip. The audio and video processing chip preprocesses the audio signals. The audio encoding chip is connected to the audio processing chip for signal amplification, filtering, and noise reduction. The video input interface receives signals and transmits them to the video digital-to-analog converter. The video digital-to-analog converter is connected to the video processor. The video processor compresses the image and then transmits it to the video encoding chip. The audio and video encoding output interface receives the encoded and compressed signal. The control unit includes an MCU and a memory, wherein the MCU is the core control unit and the memory includes a program memory and a data memory.

5. The wireless audio and video information transmission device for elevated tower cranes according to claim 1, characterized in that: The laser communication module includes a laser emitting unit, a laser collecting unit, and an optical antenna. The laser emitting unit includes a laser driver and a semiconductor laser. The laser driver receives encoded signals and converts the encoded audio and video digital signals into electrical signals suitable for driving the semiconductor laser. The semiconductor laser converts the electrical signals into optical signals. The laser collection unit includes an optical detector and a signal amplifier; The optical antenna connects the laser transmitting module and the laser receiving unit, and is used to transmit and receive laser signals.

6. The wireless audio and video information transmission device for elevated tower cranes according to claim 1, characterized in that: The audio and video decoding module includes a decoding chip, a storage unit, an audio and video input interface, and an audio and video interface. The storage unit includes a high-speed cache and a random access memory (RAM). The high-speed cache is used to temporarily store frequently accessed decoding data, and the random access memory (RAM) stores the data to be decoded and temporary data during the decoding process. The audio and video decoding output interface transmits the decoded signal to the audio and video display module.

7. The wireless audio and video information transmission device for elevated tower cranes according to claim 1, characterized in that: The audio and video display module includes a video display input interface, an audio display input interface, a display screen, and a speaker.

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