Marine laser scanning type detector for various dangerous explosive gases

Abstract

The invention discloses a marine laser scanning type detector for various dangerous explosive gases, and solves the problems of difficulty in installation, limited detection range and the like in the prior art. The detector comprises a track system, a track robot, a detection device and a control system. The rail system is composed of an overhead rail at the top end of a cabin and reflective strips. The rail robot is mounted on the hanger rail and can move, and rollers and a driving device are arranged at the bottom; the detection device is mounted on the robot through a connecting rod, comprises a plurality of equipment groups (laser guns and photoelectric detectors) and is used for detecting different gases; the control system is integrated in the detection device and is responsible for laser control, signal processing and data recording. The robot moves along the track, laser is reflected through the reflective strips, comprehensive detection of dangerous explosive gas in the cabin is achieved, and the device has the advantages of being wide in detection range, capable of synchronously detecting multiple gases, easy and convenient to install and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of dangerous and explosive gas detection, and in particular to a marine laser scanning type multiple dangerous and explosive gas detector. Background Art

[0002] As an important component of a ship, the cabin has a complex and relatively closed internal environment. This makes the detection of gas composition within the cabin particularly important, especially when transporting hazardous chemicals or flammable and explosive items. Traditional methods for detecting hazardous and explosive gases rely primarily on fixed gas sensors, which typically need to be installed in specific locations within the cabin. Since the internal structure of a cabin is difficult to change after construction, installing fixed sensors often requires modifying the cabin's electrical circuits, which not only increases installation costs but also poses potential risks to the cabin's structural integrity. Furthermore, fixed sensors can only detect gas composition near their installation location and cannot fully cover the entire cabin, limiting the accuracy and reliability of the detection results.

[0003] In recent years, with the development of laser technology, laser gas detection has gradually been applied to the detection of hazardous and explosive gases. Laser gas detection utilizes laser light of a specific wavelength to interact with gas molecules, detecting changes in the intensity of reflected or absorbed light to determine the gas concentration. This method offers the advantages of high sensitivity, high selectivity, and rapid response. However, existing laser gas detection equipment is mostly bulky and requires complex optical systems and a stable laser source, making it difficult to use in environments such as ship cabins, where space is limited and vibration is frequent.

[0004] Furthermore, the composition of hazardous gases within a ship's cabin is complex, with the potential for multiple gases to coexist, such as methane, hydrogen, and carbon monoxide. Traditional detection equipment can typically only detect a single gas, or requires multiple devices to detect different gases separately, which not only increases equipment cost but also reduces detection efficiency. Furthermore, the distribution of gases within a ship's cabin is uneven, with gas molecules moving with air flow. Therefore, testing at a fixed location cannot accurately reflect the distribution of hazardous gases throughout the cabin. Summary of the Invention

[0005] The present invention aims to provide a marine laser scanning type multiple dangerous and explosive gas detector to solve the existing problems of difficult installation, limited detection range, inability to detect multiple gases simultaneously and uneven gas distribution.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a marine laser scanning type multiple explosive gas detector, comprising:

[0007] A track system is provided at the top of the cabin, comprising a hanging rail and a pair of reflective strips, wherein the hanging rail is provided in the middle of the cabin, and the pair of reflective strips are attached to the two side walls of the cabin and are parallel to the hanging rail;

[0008] The track robot is installed on the overhead track and can move along the overhead track, the robot comprises a frame, front and rear rollers arranged at the bottom of the frame, and a driving device for driving the rollers to move, the left and right sides of the bottom end of the frame are fixedly connected with connecting blocks, and hooks are arranged at the bottom end of the connecting blocks;

[0009] The detection device comprises a device body and a plurality of equipment groups for detection, laser emitted by the laser gun is irradiated on the reflective strip after being collimated by the collimating lens, and the reflected light is received by the photodetector, the top of the detection device is provided with a connecting rod matched with the hook, and the detection device is installed on the track robot through the connecting rod;

[0010] The control system is integrated in the detection device and comprises a circuit board, a conversion circuit, a digital-to-analog conversion module, a computer control unit and a laser gun driving control module, which are used for controlling the emission of the laser gun, the processing of the received signals and the data recording.

[0011] Specifically, a plurality of movable grooves are symmetrically formed in the inner walls of the connecting blocks, balls are arranged in the movable grooves, reset springs are arranged between the balls and the movable grooves, and stop blocks are arranged at the outlets of the movable grooves, the balls partially protrude out of the movable grooves and are blocked by the stop blocks and cannot be completely ejected.

[0012] Specifically, each equipment group comprises a laser gun and a photodetector, a collimating lens is arranged on the laser gun, each equipment group is used for measuring different dangerous and explosive gases, and the outgoing light of the laser gun is irradiated on the reflective strip after passing through the collimating lens, and the reflected light is received by the corresponding photodetector.

[0013] Specifically, the control system further comprises a built-in power supply for providing power support for the detector.

[0014] Specifically, the driving device comprises a driving power supply, a motor, a driving wheel, a transmission chain and a synchronous wheel, the driving power supply is connected with the motor, the motor is fixedly connected to the frame, the motor is connected with the driving wheel, the driving wheel is connected with the synchronous wheel through the transmission chain, and the synchronous wheel drives the front roller or the rear roller to rotate.

[0015] Specifically, the detection device further comprises a data storage module for storing the detected dangerous and explosive gas concentration data, and a data transmission module for transmitting the detected data to an external device.

[0016] The principle and beneficial effects of the technical solution are as follows:

[0017] This technical solution is based on laser gas detection technology. By installing a track system and reflective strips within the cabin, a track-based robot carrying a detection device moves along the hanging rails, enabling comprehensive detection of hazardous and explosive gases within the cabin. The laser gun in the detection device emits laser light of a specific wavelength, which is collimated by a collimating lens and then illuminated by the reflective strips. The reflected light is then received by the corresponding photodetector. The control system analyzes the concentration distribution of the hazardous and explosive gas based on the intensity changes of the received light signal. The movement of the track-based robot allows the detection device to cover the entire cabin, resolving the limited detection range of traditional fixed sensors.

[0018] The device can simultaneously detect multiple hazardous and explosive gases, such as methane, hydrogen, and carbon monoxide, eliminating the need for separate detection equipment. This improves detection efficiency and reduces equipment costs. The use of reflective strips increases the effective optical range of the laser, improving measurement accuracy while reducing the performance requirements of the laser gun and saving costs. The hanging rail and reflective strips are easy to install, and the detector has a built-in power supply. The entire device is easy to install and remove from the hanging rail, providing flexibility. Mobile detection can more accurately reflect the distribution of hazardous and explosive gases within the ship's cabin, providing reliable protection for the safe operation of the ship. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Fig. 1 A schematic diagram of the structure of a marine laser scanning type multiple dangerous and explosive gas detector provided by an embodiment of the present invention;

[0020] Fig. 2 A front view of a marine laser scanning type multiple dangerous and explosive gas detector provided by an embodiment of the present invention;

[0021] Fig. 3 A schematic diagram of the structure of a marine laser scanning type multi-hazardous and explosive gas detector provided by an embodiment of the present invention;

[0022] In the figure: 1. Frame; 2. Front roller; 3. Rear roller; 4. Connecting block; 5. Hook; 6. Laser gun; 7. Photoelectric detector; 8. Connecting rod; 9. Movable slot; 10. Ball bearing; 11. Return spring; 12. Stop block; 13. Motor; 14. Driving wheel; 15. Transmission chain; 16. Synchronous wheel; 17. Device body; 18. Hanging rail. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0024] Example:

[0025] like Figs. 1-3 The following is a ship-mounted laser scanning multi-hazardous gas detector. The detector is mainly composed of a track system, a track robot, a detection device, and a control system. The structural design of each part is as follows:

[0026] The track system includes: a suspended track arranged in the middle of the cabin for supporting and guiding the movement of the track robot. The suspended track is installed on the top of the cabin by mechanical fixation, ensuring its stability and reliability. A reflective strip is attached to the two side walls of the cabin parallel to the suspended track. The reflective strip is made of high-reflectivity material and can effectively reflect laser light, improving detection accuracy.

[0027] The track robot includes: a frame as the main structure of the robot, carrying various components. The front and rear sides of the bottom end of the frame are provided with front and rear rollers respectively for moving on the suspended track. A pair of connecting blocks are fixedly connected to the left and right sides of the bottom end of the frame, and a hook is arranged at the bottom end of the connecting block for connecting the detection device. The drive device includes a drive power supply, a motor, a driving wheel, a transmission chain and a synchronous wheel. The motor is fixed on the frame, and the synchronous wheel is driven to rotate through the driving wheel and the transmission chain, thereby driving the front roller or the rear roller to realize the movement of the robot on the suspended track. A plurality of movable grooves are symmetrically formed in the inner wall of the connecting block, and a plurality of balls are slidably connected in the movable grooves. A reset spring is arranged between the ball and the movable groove, and a stop block is arranged at the outlet of the movable groove. The ball partially protrudes out of the movable groove under the action of the reset spring, which can contact the side wall of the suspended track, ensuring that the robot moves stably on the suspended track with small resistance.

[0028] The detection device includes: a device main body connected with a pair of connecting rods at the top end, the connecting rods being connected with the hooks on the track robot to realize the installation of the detection device. A plurality of equipment groups are evenly arranged at the left and right ends of the device main body, each equipment group including a laser gun and a photodetector. The front end of the laser gun is equipped with a collimating lens for emitting collimated laser light to the reflective strip, and the reflected light is received by the corresponding photodetector. The control system is integrated in the device main body and includes a circuit board, a conversion circuit, a digital-to-analog conversion module, a computer control unit and a laser gun drive control module. The computer control unit controls the emission frequency and power of the laser gun through the laser gun drive control module, the photodetector converts the received light signal into an electrical signal, which is processed by the conversion circuit and the digital-to-analog conversion module and then transmitted to the computer control unit for data recording and analysis. The control system is the core of the detector, responsible for coordinating the operation of each component. Its main functions include: controlling the emission frequency and power of the laser gun to ensure that the laser light can accurately irradiate the reflective strip. Receiving the light signal from the photodetector and converting it into an electrical signal for amplification and filtering. Convert the processed electrical signal into a digital signal for data storage and analysis. Control the moving speed and position of the track robot to realize the detection of different areas in the cabin. The detection data is sent to external equipment through the data transmission module for further analysis and monitoring.

[0029] The marine laser scanning multi-hazardous explosive gas detector of the present application realizes comprehensive detection of hazardous explosive gases in the cabin by setting up a track system and a reflective strip in the cabin, and moving the detection device along the track with a track robot. The specific operation process is as follows:

[0030] System layout: Reflective strips are attached to the two side walls of the cabin, and the reflective strips need to be closely attached to the cabin walls to ensure flatness and firmness. A track is set up in the middle of the cabin, which is parallel to the reflective strips and is installed on the top of the cabin by mechanical fixation. The installation of the track and the reflective strips does not require additional circuits, simplifying the installation process.

[0031] Robot movement and detection: The track robot is installed on the track, and multiple laser guns and photoelectric detectors are integrated on the motor of the robot. Each laser gun is equipped with a collimating lens for emitting laser beams of specific wavelengths. The robot starts from one end of the track, stops after a certain distance, and then emits laser beams to the reflective strips in turn. The reflected light is received by the corresponding photoelectric detector, and the data is recorded and stored. Then the robot moves forward a certain distance and repeats the above process until it reaches the other end of the track. Through the average processing of multiple detection data, the concentration distribution of each hazardous explosive gas in the cabin can be accurately obtained.

[0032] Device advantages: The device integrates multiple laser guns and detectors for hazardous explosive gases, which can detect multiple gases such as methane, hydrogen, and carbon monoxide simultaneously, without the need for multiple devices for separate detection, improving detection efficiency and reducing equipment cost. The device can move on the track, solving the problem of limited detection range of traditional fixed sensors. Gases move with air flow, and mobile detection can more accurately reflect the distribution of hazardous explosive gases in the cabin. The application of reflective strips increases the effective optical path of laser from emission to reception, improving measurement accuracy. At the same time, this method reduces the requirements for laser gun performance, saving costs. The installation of the track and the reflective strips is simple, the detector has a built-in power supply, and the overall device is easy to install and remove on the track, with flexible use.

[0033] Specific implementation process as follows:

[0034] Reflective strips are attached to the two side walls of the cabin, and the reflective strips should be closely attached to the two side walls of the cabin to ensure their flatness and stability. The reflective strips should have good reflective properties to effectively reflect the laser beams, thereby improving the accuracy and reliability of the detection. A track is set up in the middle of the cabin, which should be firmly connected to the top of the cabin to ensure that it can withstand the weight of the track robot and the force generated during movement. The track should have high strength and wear resistance to ensure smooth movement of the track robot.

[0035] The frame is fixed on the overhead track, and front and rear rollers are respectively installed on the bottom of the frame. A pair of connecting blocks are fixedly connected to the left and right sides of the bottom end of the frame, and a pair of hooks are arranged at the bottom end of the connecting blocks for connecting the detection device. A driving device is installed, which includes a driving power supply, a motor, a driving wheel, a transmission chain and a synchronous wheel. The driving power supply is connected to the motor, the motor is fixedly connected to the frame, the output shaft of the motor is connected to the driving wheel, the driving wheel is connected to the synchronous wheel through the transmission chain, and the synchronous wheel is fixedly connected to the front roller and the rear roller through the rotating shaft. Through the rotation of the motor, the driving wheel is driven to rotate, and then the synchronous wheel is driven to rotate through the transmission chain, finally the front roller or the rear roller is driven to rotate, realizing the movement of the track robot.

[0036] The detection device includes a device body and a plurality of equipment groups for detection. Each equipment group includes a laser gun and a photodetector, and a collimating lens is arranged on the laser gun. The connecting rod at the top end of the detection device is connected with the hooks on the track robot, ensuring firm and reliable connection. During installation, the detection device needs to be debugged to ensure that the laser emitted by the laser gun can accurately irradiate the reflective strip, and the reflected light can be effectively received by the photodetector. During debugging, the angle of emission of the laser gun and the position of the collimating lens can be adjusted to make the angle between the laser beam and the reflective strip reach the best state, thereby improving the detection accuracy and sensitivity.

[0037] The control system is integrated in the detection device, including a circuit board, a conversion circuit, a digital-to-analog conversion module, a computer control unit and a laser gun driving control module. When configuring the control system, the modules need to be correctly connected, and parameter setting and debugging are needed. First, the circuit board is installed in the detection device, and the lines between the modules are connected. Then, the conversion circuit is calibrated to ensure that it can accurately convert the optical signal received by the photodetector into an electrical signal. Next, the digital-to-analog conversion module is set to accurately convert the converted electrical signal into a digital signal for processing by the computer control unit. In addition, the laser gun driving control module needs to be debugged to ensure that it can accurately control the emission frequency and power of the laser gun according to the instructions of the computer control unit. Finally, the computer control unit is programmed to realize the overall control of the detector, including the emission of the laser gun, the processing of the signal, the recording and transmission of data, etc.

[0038] The probe of the present application is powered by an internal power supply, so the power supply needs to be connected and checked. First, install the internal power supply in the detection device and connect it with the control system. Then, check whether the voltage and current of the power supply meet the requirements of the probe, to ensure that the power supply can provide stable power support for the probe. During the inspection process, the output voltage and current of the power supply can be measured using a multimeter or other tools to ensure that they are within the normal range. In addition, it is also necessary to check whether the connection line of the power supply is firm and reliable, to avoid the probe from not working normally due to loose line.

[0039] After the installation, debugging and power connection of the equipment are completed, the equipment can be started to collect data. First, start the track robot to move along the track. During the movement, the track robot will move the detection device together. When the detection device moves to the designated position, the control system will control the laser gun to emit laser light, which is collimated by the collimating lens and irradiates on the reflective strip. The reflected light is received by the photodetector. The photodetector converts the received light signal into an electrical signal, which is then converted into a digital signal by the conversion circuit and digital-analog conversion module. Finally, the computer control unit processes and records the data. In this way, the detection device can detect the dangerous and explosive gas in the cabin in real time and store the detection data in the data storage module. At the same time, the data transmission module can also transmit the detection data to external equipment for further analysis and processing.

[0040] The collected dangerous and explosive gas concentration data needs to be processed and analyzed to obtain the distribution and concentration level of dangerous and explosive gas in the cabin. First, preprocess the collected data to remove noise and interference signals. Then, according to the types and characteristics of dangerous and explosive gas, select appropriate data processing methods such as smoothing and filtering to improve the accuracy and reliability of the data. Next, analyze the processed data and draw a dangerous and explosive gas concentration distribution map to visually display the distribution of dangerous and explosive gas in the cabin. By analyzing the dangerous and explosive gas concentration distribution map, the high and low concentration areas of dangerous and explosive gas in the cabin can be determined, which provides an important reference for the safe operation of the ship.

[0041] The above is only an embodiment of the present application, and the specific technical solutions or characteristics of the scheme are not described in detail. For those skilled in the art, without departing from the technical solutions of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, which will not affect the effect and practicality of the present application. The protection scope of the present application shall be subject to the content of its claims, and the specific embodiments described in the specification can be used to explain the content of the claims.

Claims

1. A marine laser scanning type multiple explosive gas detector, characterized in that: include: A track system is provided at the top of the cabin, comprising a hanging rail and a pair of reflective strips, wherein the hanging rail is provided in the middle of the cabin, and the pair of reflective strips are attached to the two side walls of the cabin and are parallel to the hanging rail; A rail robot is mounted on the hanging rail and is capable of moving along the hanging rail. The robot includes a frame, front rollers and rear rollers arranged at the bottom of the frame, and a driving device for driving the rollers to move. The left and right sides of the bottom end of the frame are fixedly connected to connecting blocks, and the bottom ends of the connecting blocks are provided with hooks; The detection device includes a device body and multiple equipment groups for detection. The laser emitted by the laser gun is collimated by a collimating lens and then irradiated onto the reflective strip. The reflected light is received by the photoelectric detector. A connecting rod that cooperates with the hook is provided at the top of the detection device. The detection device is installed on the track robot through the connecting rod. The control system is integrated into the detection device and includes a circuit board, a conversion circuit, a digital-to-analog conversion module, a computer control unit, and a laser gun drive control module, which is used to control the emission of the laser gun, the processing of received signals, and data recording.

2. The marine laser scanning type multiple explosive gas detector according to claim 1, characterized in that: A pair of connecting blocks are symmetrically provided with a plurality of movable grooves on the inner wall, wherein balls are arranged in the movable grooves, a return spring is arranged between the balls and the movable grooves, and a block is arranged at the outlet of the movable grooves. The balls partially protrude from the movable grooves and are blocked by the block and will not pop out completely.

3. The marine laser scanning type multiple explosive gas detector according to claim 1, characterized in that: Each of the equipment groups includes a laser gun and a photoelectric detector. The laser gun is provided with a collimating lens. Each of the equipment groups is used to measure different hazardous and explosive gases. The output light of the laser gun passes through the collimating lens and is irradiated onto the reflective strip, and the reflected light is received by the corresponding photoelectric detector.

4. The marine laser scanning type multiple explosive gas detector according to claim 1, characterized in that: The control system also includes a built-in power supply for providing power support to the detector.

5. The marine laser scanning type multiple explosive gas detector according to claim 1, characterized in that: The driving device includes a driving power supply, a motor, a driving wheel, a transmission chain and a synchronous wheel. The driving power supply is connected to the motor, the motor is fixedly connected to the frame, the motor is connected to the driving wheel, the driving wheel is connected to the synchronous wheel through the transmission chain, and the synchronous wheel drives the front roller or the rear roller to rotate.

6. The marine laser scanning type multiple explosive gas detector according to claim 1, characterized in that: The detection device further includes a data storage module for storing detected concentration data of hazardous explosive gases, and a data transmission module for transmitting the detected data to an external device.

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