Multi-container water atmosphere sampling device for unmanned aerial vehicle
By designing a multi-container water atmospheric sampling device for drones, fixed-depth sampling and multi-point quantitative sampling are achieved using electric push rods and solenoid valves, combined with water and gas dual-purpose pumps and sensors, the sampling irregularities in the existing technology are solved. and the problem of difficulty in sampling in deep water high-rises improve sampling accuracy and safety.
Patent Information
- Application Number
- CN202420675153.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-03
AI Technical Summary
The existing water and atmospheric sampling devices are not standardized in sampling and inaccurate sampling capacity control, and cannot quickly and conveniently conduct multi-region monitoring, especially in deep water and high-rise fire scenarios. Traditional equipment is prone to stir the water or produce harmful gases, affecting sampling. accuracy.
A multi-container water atmospheric sampling device for drones is designed, including a first platform, a second platform, an solenoid valve device, an electric push rod and a sampling pump. Fixed-depth sampling is achieved through an electric push rod, an solenoid valve and a single The valve controls the capacity of each sampling bag, and uses a dual-purpose water and gas pump and an integrated SO2, NO, and temperature sensor to realize multi-point quantitative sampling and atmospheric detection.
It realizes the collection of multiple sample points at a time of flight by drone, accurately controls the sample capacity of each sampling bag, improves the quality of water sampling, is suitable for a variety of sampling needs, and quickly monitors harmful substances in the atmosphere in emergencies, improving fire protection Safety.
Smart Images
Figure CN222188900U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a sampling device for monitoring the environment of water bodies, atmosphere and the like, in particular to an automatic water body and atmosphere sampling device. Background Art
[0002] In the past, the water monitoring sampling mode mainly collected samples by manually operating water quality samplers. Although there are new devices such as automatic samplers that can time and start sampling, they still have the same common problems as manual operation, that is, sampling is not standardized, sampling capacity control is not accurate, and it is impossible to quickly and conveniently monitor and collect water samples in multiple areas. The movement and operation are cumbersome and bulky. For some rivers and channels with a width of more than 50 meters, when water samples from multiple sections need to be collected, the samplers need to take boats and other tools to the center of the river and the opposite bank. On the one hand, it increases the risk factor of the samplers' work and is prone to accidents; on the other hand, the boats and other tools they take will inevitably stir the water body, resulting in the sampled material not being able to accurately reflect the true situation of the water body. Therefore, the traditional water monitoring sampling mode is developing in the direction of intelligent drones. In terms of gas collection, for sudden fires and other emergencies, firefighters cannot reach the high-rise buildings where the fire broke out, and secondly, a large amount of harmful gases will be generated when the fire occurs, which will cause great harm to firefighters and detection personnel. At this time, drone sampling equipment can solve this problem very well.
[0003] Many existing studies have also proposed relatively excellent drone sampling models, such as the published patent CN115165472A, in which the water sample collection device is used in conjunction with a drone. This device needs to be marked each time it samples, and the device has many parts.
[0004] Based on the above description, in 2022 we proposed an intelligent water body monitoring and sampling equipment based on drones. In actual application, the sampling effect for water bodies within 10 cm below the water surface is very good; however, when deep water sampling is required, the equipment cannot achieve fixed depth sampling. For example, if sampling is required below 30 cm above the water surface, the equipment cannot achieve fixed depth control. Therefore, in 2023, we proposed a multi-container water body automatic sampling device for drones, with patent number 202320602618.X, which solves the problem of not being able to reach deep water sampling; the sampling bottles of the above two patents are both open and can only sample water bodies. Summary of the invention
[0005] Based on the above description, the utility model proposes a multi-container water and atmosphere sampling device for unmanned aerial vehicles, which has a simpler structure and can not only sample water bodies but also sample the atmosphere, and each sampling bag can be controlled individually, realizing the sampling of multiple containers at one time.
[0006] The technical solution adopted is: a multi-container water and atmosphere sampling device for unmanned aerial vehicles, including a first platform, a second platform, a solenoid valve device, an electric push rod and a sampling pump; the unmanned aerial vehicle is installed on the first platform; the electric push rod is installed on one side of the first platform, and a sampling pump is installed at the center; the solenoid valve device is installed on the second platform, and the sampling device is installed below the second platform.
[0007] The electric push rod has a mounting hole at the end thereof, on which one end of the water inlet pipe is fixed by a self-locking tie; the other end of the water inlet pipe is connected to the water inlet of the sampling pump; the water outlet of the sampling pump is connected to the solenoid valve device through a pipe;
[0008] The solenoid valve device includes a plurality of two-position three-way solenoid valves connected in series, each of which is respectively connected to a sewage pipe, a sampling pipe and a water outlet pipe; the pipe at the water outlet of the sampling pump is connected to the water inlet main pipe; the water inlet main pipe is respectively connected to the sampling pipes; each water outlet pipe passes through the second platform and is connected to the sampling device;
[0009] The sampling device is located below the second platform, and includes a circular hollow cavity, a plurality of sampling bags and a plurality of one-way valves; the hollow cavity is fixed below the second platform, and the hollow cavity adopts an acrylic plate; the hollow cavity is evenly divided into a plurality of sampling cavities by the acrylic plate; a one-way valve is installed on the inner wall of each sampling cavity, a sampling bag is installed on the one-way valve, and the sampling bag is located in the sampling cavity; the outlet pipe of each two-position three-way solenoid valve is connected to a one-way valve respectively.
[0010] The sampling pump can be a water-gas dual-purpose pump.
[0011] Furthermore, the first platform is also equipped with an integrated sensor for SO2, NO and temperature.
[0012] Furthermore, the start and stop time of the sampling pump is controlled by OpenRB-150 and relays.
[0013] Furthermore, the number of two-position three-way solenoid valves is the same as the number of sampling bags and sampling chambers.
[0014] The utility model has a simpler structure and can complete the sampling of water samples and atmosphere. The utility model realizes the one-time flight of the drone to collect water bodies at multiple sample points, and can accurately control the volume of samples collected by each sampling bag; the utility model can also sample the atmosphere. The sampling bags are sealed and will not contaminate each other. The sampling volume of each branch is controlled by the control of the solenoid valve and the one-way valve, and multi-point quantitative sampling can be achieved.
[0015] By installing an electric push rod, the extension and retraction of the electric push rod drives the extension and retraction of the water inlet pipe to achieve fixed-depth sampling; each solenoid valve controls each sampling pipe, drainage pipe and sewage pipe separately, performs multi-point sampling and accurately controls the water inlet volume, and realizes the collection of water samples from multiple containers; the start and stop time of the sampling pump is controlled by a relay to realize on-demand and accurate collection of sample capacity. In terms of gas collection: technicians control the drone to fly to the designated monitoring point, and the integrated detector of SO2, NO, and temperature starts working, which can detect SO2, NO, temperature and other parameters in the atmosphere on the spot. During the detection, the air pump is turned on at the same time, and the solenoid valve controls the one-way valve on the sampling bag to open, realizing one-time multi-container sampling.
[0016] Working steps:
[0017] Water collection:
[0018] Step 1: After the drone carrying the utility model arrives at the designated area, the drone descends and floats on the water surface. The host computer sends an angle command to the OpenRB-150 control board. The OpenRB-150 control board controls the electric push rod through the control relay. When the electric push rod is extended, it drives the water inlet pipe to extend into the water to reach the required depth; the host computer sends a command to the OpenRB-150 control board through the serial communication method to start the sampling pump. The water sample reaches the water inlet main pipe through the water pipe at the water outlet of the sampling pump. The water inlet main pipe is connected to the sampling pipes of the two-position three-way solenoid valve respectively, and each sampling pipe is controlled separately by the two-position three-way solenoid valve, that is, each branch of the water inlet main pipe can be controlled separately by the two-position three-way solenoid valve, and the drainage pipes on the two-position three-way solenoid valve are connected to the one-way valve respectively, and the water sample in the drainage pipe enters the sampling bag. According to the set time, the quantitative sampling is completed, and the sampling pump is closed; the sewage pipe can be controlled to discharge sewage as needed;
[0019] Step 2: Based on step 1, after the sampling is completed, the OpenRB-150 control board controls the electric push rod to retract through the control relay, driving the water inlet pipe to retract and leave the water body; if sampling needs to continue, the drone arrives at the next target location according to the set position, and the water inlet pipe absorbs water at the target location for the set time, the solenoid valve controls the closing of the sample bag that has been collected, and the solenoid valve controls the one-way valve to open the sample bag that has not been sampled; then repeat the sampling action in step 1.
[0020] Step 3: After the sampling work meets the set requirements, the drone returns and the operator takes out the sampling bag.
[0021] Gas collection:
[0022] Step 1: When the technician arrives at the designated location to control the drone, the drone hovers, and the host computer sends an angle command to the OpenRB-150 control board. The OpenRB-150 control board detects SO2, NO, and temperature by controlling the relay.
[0023] Step 2: The water-gas dual-purpose pump starts working to draw the required gas into the sampling bag, and the solenoid valve controls the closing of the one-way valve to complete the gas collection.
[0024] Step 3: After the sampling work meets the set requirements, the drone returns and the operator takes out the sampling bag.
[0025] The utility model is suitable for environments with multiple sampling requirements. By controlling the stroke of the electric push rod, the depth of the water inlet pipe entering the water body can be controlled, and the drone can collect multiple water samples in one flight. The collection capacity of each water sample can also be accurately controlled, which improves the quality of water sampling and better serves daily water monitoring and water scientific research. At the same time, for sudden fire safety issues, the drone can also quickly and accurately monitor harmful substances in the atmosphere, so that firefighters can better analyze the fire situation and carry out rescue work.
[0026] The upper computer of the utility model adopts a NUC onboard computer installed with the ROS system. The lower computer uses the OpenRB-150 control board and exchanges data with the upper computer through serial communication. Through the distributed control architecture of ROS, data interaction with the human-computer interaction interface of the ground workstation can also be realized.
[0027] The drone descends and floats on the water surface. The host computer sends an angle command to the OpenRB-150 control board. The OpenRB-150 control board controls the electric push rod through the control relay. When the electric push rod is extended, the water inlet pipe is extended to reach the depth required by the national water quality sampling. The host computer sends a command to the OpenRB-150 control board through serial communication to start the sampling pump. The water sample enters the sampling bag through the water inlet and outlet pipes of the pump. According to the set time, the quantitative sampling is completed and the sampling pump is closed. After the sampling is completed, the OpenRB-150 control board controls the electric push rod to retract through the control relay, driving the rubber hose to retract. If sampling needs to continue, after the drone arrives at the next target location according to the set position, the water inlet pipe of the sampling pump absorbs the set time at the target location, and the lower solenoid valve controls the closing of the sampled bag and the opening of the unsampled sample bag. Repeat the sampling action in step 1. The sampling work completes the set requirements, the drone returns, and the operator takes out the sampling bag.
[0028] The control of the two-position three-way solenoid valve and the sampling pump in the utility model is controlled by the OpenRB-150 control board that communicates with the host computer installed with the ROS system through the serial port. The angle command is sent to the OpenRB-150 control board through the host computer, and the operation of the sampling pump is controlled by the relay. The host computer sends relevant instructions to the OpenRB-150 control board, and then controls the start and stop of the sampling pump to realize the function of water sample collection; the telescopic control of the electric push rod is controlled by the relay, and the host computer sends relevant instructions to the OpenRB-150 control board, and then controls the relay to complete the telescopic control of the electric push rod to realize the fixed depth sampling requirement. The technician controls the drone to fly to the designated monitoring point, and the SO2, NO, and temperature integrated detector starts working, and the parameters such as SO2, NO, and temperature in the atmosphere can be detected on the spot. While detecting, the air pump is turned on at the same time, and the solenoid valve controls the one-way valve on the sampling bag to open, realizing one-time multi-container sampling. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 It is a schematic diagram of the structure of the utility model;
[0030] Figure 2 It is a structural schematic diagram of the utility model from another angle;
[0031] Figure 3 It is a structural schematic diagram of the solenoid valve device. DETAILED DESCRIPTION
[0032] The present invention is further described in detail below with reference to the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples. The present invention is described in conjunction with a drone.
[0033] See also Figures 1 to 3 As shown, a multi-container water body air sampling device for a drone includes a first platform 1, a second platform 2, a solenoid valve device 3, an electric push rod 4 and a sampling pump 5; the drone is installed on the first platform 1, and a SO2, NO, and temperature integrated sensor 11 is also installed on the first platform 1. The electric push rod 4 is installed on one side of the first platform 1, and the sampling pump 5 is installed at the center; the solenoid valve device 3 is installed on the second platform 2, and the sampling device 6 is installed below the second platform 2.
[0034] One end of the water inlet pipe 7 is fixed to the mounting hole at the end of the electric push rod 4 by a self-locking tie; the other end of the water inlet pipe 7 is connected to the water inlet of the sampling pump 5; the water outlet of the sampling pump 5 is connected to the solenoid valve device 3 through a pipe 8;
[0035] The solenoid valve device 3 includes 6 two-position three-way solenoid valves 31 connected in series, each of which is respectively connected to a sewage pipe 32, a sampling pipe 33 and a water outlet pipe 34; the pipe 8 of the water outlet of the sampling pump 5 is connected to the water inlet main pipe 35; the water inlet main pipe 35 is respectively connected to the sampling pipes 33; each water outlet pipe 34 passes through the second platform 2 and is connected to a one-way valve 64 on the sampling device 6;
[0036] The sampling device 6 is located below the second platform 2, and includes a circular hollow cavity 61, 6 sampling bags 62 and 6 one-way valves 64; the hollow cavity 61 is fixed below the second platform 2, and the hollow cavity 61 adopts an acrylic plate, and is evenly divided into 6 sampling cavities 63 by the acrylic plate; a one-way valve 64 is installed on the inner wall of each sampling cavity 63, and a sampling bag 62 is installed on the one-way valve 64, and the sampling bag 62 is located in the sampling cavity 63; the outlet pipe 34 of each two-position three-way solenoid valve 31 is respectively connected to a one-way valve 64.
[0037] The sampling pump can be a water-gas dual-purpose pump, and the start and stop time of the water pump is controlled by OpenRB-150 and relay.
[0038] The number of two-position three-way solenoid valves is the same as the number of sampling bags and sampling chambers, and can be installed according to actual needs.
Claims
1. A multi-container water and air sampling device for unmanned aerial vehicles, characterized by: It includes a first platform, a second platform, a solenoid valve device, an electric push rod and a sampling pump; the first platform is equipped with a drone; the electric push rod is installed on one side of the first platform, and the sampling pump is installed at the center; the solenoid valve device is installed on the second platform, and the sampling device is installed below the second platform; wherein, The electric push rod has a mounting hole at the end thereof to which one end of the water inlet pipe is fixed by a self-locking tie; the other end of the water inlet pipe is connected to the water inlet of the sampling pump; the water outlet of the sampling pump is connected to the solenoid valve device through a pipe; The solenoid valve device comprises a plurality of two-position three-way solenoid valves connected in series, each of which is respectively connected to a sewage pipe, a sampling pipe and a water outlet pipe; the pipe at the water outlet of the sampling pump is connected to the water inlet main pipe; the water inlet main pipe is respectively connected to the sampling pipes; each water outlet pipe passes through the second platform and is connected to the sampling device; The sampling device is located below the second platform, and includes a circular hollow cavity, a plurality of sampling bags and a plurality of one-way valves; the hollow cavity is evenly divided into a plurality of sampling cavities by an acrylic plate; a one-way valve is installed on the inner wall of each sampling cavity, a sampling bag is installed on the one-way valve, and the sampling bag is located in the sampling cavity; and each water outlet pipe is connected to a one-way valve.
2. The multi-container water body atmosphere sampling device for unmanned aerial vehicle according to claim 1 is characterized in that The first platform is also equipped with an integrated sensor for SO2, NO and temperature.
3. The multi-container water body atmosphere sampling device for unmanned aerial vehicle according to claim 1 is characterized in that The start and stop time of the sampling pump is controlled by OpenRB-150 and a relay.
4. The multi-container water body atmosphere sampling device for unmanned aerial vehicle according to claim 1 is characterized in that The number of the two-position three-way solenoid valves is the same as the number of the sampling bags and sampling chambers.
5. The multi-container water body atmosphere sampling device for unmanned aerial vehicle according to claim 1 is characterized in that The sampling pump is a water-gas dual-purpose pump.