A device for efficiently producing hydrogen for a drone

Abstract

The utility model relates to hydrogen gas equipment technical field makes, concretely disclose a kind of high -efficient hydrogen gas device for unmanned vehicle, including box, the top of the box is hinged with top cover, electrolytic hydrogen production assembly is equipped in the box, water tank and electrolyte tank are fixedly connected to the outside of the box, detection conveying component is equipped between the water tank and electrolyte tank, the detection conveying component is used to when pure water is used up or close to use up in electrolytic hydrogen production assembly, conveying pure water to electrolytic hydrogen production assembly;Temperature regulating component for temperature regulation to electrolytic hydrogen production assembly is also equipped in the box the beneficial effects of the utility model are: in the utility model, it solves the problem that existing hydrogen production device is not convenient to automatically add pure water.Detection conveying component is set, when pure water is insufficient, can automatically add pure water and electrolyte to the first electrolytic cylinder and the second electrolytic cylinder.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen production equipment technology, and in particular to a device for high-efficiency hydrogen production for unmanned aerial vehicles. Background Technology

[0002] In the field of drones, endurance and energy efficiency are key factors limiting their performance. Hydrogen, as a clean and efficient energy source, produces only water when burned, is pollution-free, and has high energy density. It can provide drones with sustained power, significantly extending their endurance, making it particularly suitable for long-endurance reconnaissance, mapping, and logistics missions. Therefore, equipping drones with devices capable of autonomously producing hydrogen is a viable option.

[0003] However, existing hydrogen production devices have significant drawbacks, the most prominent being the inconvenience of automatically adding pure water. Traditional hydrogen production devices require manual, periodic replenishment of pure water as a feedstock for electrolysis, which is quite cumbersome.

[0004] For example, Chinese patent CN217628652U discloses an easy-to-maintain hydrogen generator, including a bottom shell, a middle shell on one side of the top of the bottom shell, and a top shell on the other side of the top of the bottom shell; the top shell is engaged with the middle shell, and the top of the top shell covers the top of the middle shell; the middle shell has a water tank inside, and two water tanks are arranged symmetrically.

[0005] The patent has the aforementioned problems. Utility Model Content

[0006] To address the technical problem that existing hydrogen production devices are inconvenient for automatically adding pure water, this utility model provides a highly efficient hydrogen production device for unmanned aerial vehicles (UAVs).

[0007] The technical solution adopted by this utility model is: a device for high-efficiency hydrogen production for unmanned aerial vehicles, including a box body, a top cover hinged to the top of the box body, an electrolytic hydrogen production component inside the box body, a water tank and an electrolyte tank fixedly connected to the outside of the box body, a detection and conveying component between the water tank and the electrolyte tank, the detection and conveying component being used to convey pure water to the electrolytic hydrogen production component when the pure water in the electrolytic hydrogen production component is used up or nearly used up; the box body is also equipped with a temperature regulating component for regulating the temperature of the electrolytic hydrogen production component.

[0008] The present invention is further configured such that the electrolytic hydrogen production assembly includes a first electrolytic cylinder and a second electrolytic cylinder, the first electrolytic cylinder and the second electrolytic cylinder are fixedly connected to each other, a diaphragm is fixedly connected between the first electrolytic cylinder and the second electrolytic cylinder, a second contact cylinder is fixedly connected to the bottom of the first electrolytic cylinder and the second electrolytic cylinder, an end cap is detachably connected to the top of the first electrolytic cylinder and the second electrolytic cylinder, a first contact cylinder is fixedly connected to the bottom of the end cap, a conductive sheet is fixedly connected inside the second contact cylinder, an electrolytic rod is inserted into the second contact cylinder, a first exhaust pipe and a second exhaust pipe are fixedly connected to the top of the end cap, the first exhaust pipe communicates with the inside of the second electrolytic cylinder, and the second exhaust pipe communicates with the inside of the first electrolytic cylinder.

[0009] A further feature of this invention is that one end of the first exhaust pipe is detachably and fixedly connected to a second output pipe, one end of the second exhaust pipe is detachably and fixedly connected to a first output pipe, and one end of both the first output pipe and the second output pipe extends to the outside of the housing.

[0010] The present invention is further configured such that the temperature control assembly includes a cooling chamber fixedly connected to the box body, a temperature sensor fixedly connected to the first electrolytic cylinder and the second electrolytic cylinder, and a PTC heating plate. A temperature sensor is also fixedly connected to the first electrolytic cylinder and the second electrolytic cylinder. A controller is installed inside the box body. Multiple sets of heat-absorbing tubes surround the first and second electrolytic cylinders. Fixed pipes are fixedly connected to both ends of each heat-absorbing tube. An inlet pipe and an outlet pipe are fixedly connected to the outside of each of the two fixed pipes. Both the inlet pipe and the outlet pipe are fixedly connected to the cooling chamber. A first water pump is fixedly connected inside the cooling chamber. The output end of the first water pump is fixedly connected to the inlet pipe. The first water pump, the temperature sensor, and the PTC heating plate are all electrically coupled to the controller.

[0011] A further feature of this invention is that multiple sets of heat dissipation fins are fixedly connected to the outside of the cooling box, a fan is fixedly connected inside the box, the fan corresponds to the heat dissipation fins, and heat dissipation vents are provided on both sides of the box.

[0012] The present invention is further configured such that a water tank and an electrolyte tank are fixedly connected to the outside of the box body, a first pipe and a second pipe are fixedly connected to the outside of the water tank, the first pipe is fixedly connected inside the first electrolytic cylinder, the second pipe is fixedly connected inside the second electrolytic cylinder, and a third pipe and a fourth pipe are fixedly connected to the outside of the electrolyte tank, the third pipe is fixedly connected inside the first electrolytic cylinder, and the fourth pipe is fixedly connected inside the second electrolytic cylinder.

[0013] The present invention is further configured such that the detection and conveying assembly includes a second water pump fixedly connected to the water tank, a third water pump fixedly connected to the electrolyte tank, a connecting pipe fixedly connected to the outside of the first electrolytic cylinder and the second electrolytic cylinder, and a guide cylinder fixedly connected to the outside of the connecting pipe.

[0014] The output end of the first water pump is fixedly connected to the first and second pipes, and the output end of the second water pump is fixedly connected to the third and fourth pipes.

[0015] The guide cylinder is equipped with a float ball, and a laser rangefinder is fixedly connected to the top of the guide cylinder. The first water pump, the second water pump, and the laser rangefinder are all electrically coupled to the controller.

[0016] The beneficial effects of this invention are: it solves the problem of inconvenient automatic addition of pure water in existing hydrogen production devices. With the detection and delivery component, when pure water is insufficient, pure water and electrolyte can be automatically added to the first and second electrolytic cylinders. Attached Figure Description

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

[0018] Figure 2 This is a schematic diagram of the box structure in this utility model. Figure 1 ;

[0019] Figure 3 This is a schematic diagram of the structure of the box in this utility model. Figure 2 ;

[0020] Figure 4 This is a schematic diagram of the internal structure of the box in this utility model;

[0021] Figure 5 This is a schematic diagram of the cooling box in this utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the first and second electrolytic cylinders in this utility model. Figure 1 ;

[0023] Figure 7 This is a schematic diagram of the structure of the first and second electrolytic cylinders in this utility model. Figure 2 ;

[0024] Figure 8 This is a schematic diagram of the internal structure of the first and second electrolytic cylinders in this utility model;

[0025] Figure 9 This is a cross-sectional structural diagram of the first and second electrolytic cylinders in this utility model;

[0026] Figure 10 This is a cross-sectional structural diagram of the guide cylinder in this utility model.

[0027] The diagram is marked as follows:

[0028] 1. Box body; 2. Top cover; 3. Fan; 4. Water tank; 5. Electrolyte tank; 6. First pipe; 7. Second pipe; 8. Third pipe; 9. Fourth pipe; 10. First electrolysis cylinder; 11. Second electrolysis cylinder; 12. End cap; 13. First exhaust pipe; 14. First output pipe; 15. Second output pipe; 16. Cooling chamber; 17. Heat dissipation fins; 18. Guide cylinder; 19. Laser rangefinder sensor; 20. Connecting pipe; 21. Heat absorption pipe; 22. Fixing pipe; 23. Inlet pipe; 24. Outlet pipe; 25. Diaphragm; 26. Heat dissipation port; 27. Second exhaust pipe; 28. Electrolysis rod; 29. ​​First contact cylinder; 30. Second contact cylinder; 31. Conductive sheet; 32. Float. Detailed Implementation

[0029] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0030] The following is in conjunction with the appendix Figure 1-10 The present invention will be further described below.

[0031] To address the problems existing in the background technology, this application proposes the following technical solution: A device for efficient hydrogen production by unmanned aerial vehicles (UAVs), comprising a housing 1, a top cover 2 hinged to the top of the housing 1, an electrolysis hydrogen production assembly inside the housing 1, a water tank 4 and an electrolyte tank 5 fixedly connected to the outside of the housing 1, and a detection and conveying assembly between the water tank 4 and the electrolyte tank 5. The detection and conveying assembly is used to supply pure water to the electrolysis hydrogen production assembly when the pure water in the assembly is used up or nearly used up. A temperature regulating assembly for temperature control of the electrolysis hydrogen production assembly is also provided inside the housing 1. The housing 1 serves as the supporting frame of the entire device, providing stable installation space for the internal components. The hinged top cover 2 can be opened and closed, facilitating inspection, maintenance, or replacement of the components inside the housing by operators. The water tank 4 and electrolyte tank 5 outside the housing 1 store pure water and electrolyte respectively, serving as raw material reserves for the electrolysis reaction and ensuring the continuous operation of the hydrogen production process. The detection and delivery component can monitor the remaining amount of raw materials in the electrolytic hydrogen production component in real time and automatically replenish it when pure water is insufficient, thus avoiding the interruption of hydrogen production due to raw material interruption.

[0032] In this embodiment, the electrolytic hydrogen production assembly includes a first electrolytic cylinder 10 and a second electrolytic cylinder 11, which are fixedly connected to each other. A diaphragm 25 is fixedly connected between the first electrolytic cylinder 10 and the second electrolytic cylinder 11. A second contact cylinder 30 is fixedly connected to the bottom of both the first electrolytic cylinder 10 and the second electrolytic cylinder 11. An end cap 12 is detachably connected to the top of the first electrolytic cylinder 10 and the second electrolytic cylinder 11. A first contact cylinder 29 is fixedly connected to the bottom of the end cap 12. A conductive sheet 31 is fixedly connected inside the second contact cylinder 30. An electrolytic rod 28, which is made of graphite, is inserted into the second contact cylinder 30. A first exhaust pipe 13 and a second exhaust pipe 27 are fixedly connected to the top of the end cap 12. The first exhaust pipe 13 communicates with the inside of the second electrolytic cylinder 11, and the second exhaust pipe 27 communicates with the inside of the first electrolytic cylinder 10. One end of the first exhaust pipe 13 is detachably and fixedly connected to the second output pipe 15, and one end of the second exhaust pipe 27 is detachably and fixedly connected to the first output pipe 14. One end of both the first output pipe 14 and the second output pipe 15 extends to the outside of the housing 1. The first electrolysis cylinder 10 and the second electrolysis cylinder 11 serve as containers for the electrolysis reaction, and are interconnected to ensure uniform distribution of the raw materials. The intermediate diaphragm 25 effectively separates the hydrogen and oxygen produced by electrolysis, preventing the mixing of the two gases from causing safety hazards and improving the safety of the hydrogen production process. The second contact cylinder 30 at the bottom cooperates with the first contact cylinder 29 at the bottom of the end cap 12 to provide a stable installation and conductive structure for the electrolysis rod 28, ensuring stable electrolysis reaction.

[0033] After the conductive sheet 31 inside the second contact cylinder 30 is connected to the power supply, the current is conducted through the graphite electrolytic rod 28. Graphite has good conductivity and corrosion resistance, can adapt to the electrolytic environment, and extends the service life of the component. The removable end cap 12 facilitates the replacement of the electrolytic rod 28 or the cleaning of impurities inside the cylinder.

[0034] The first exhaust pipe 13 and the second exhaust pipe 27 respectively exhaust the gas from the second electrolysis cylinder 11 and the first electrolysis cylinder 10. Together with the detachable first output pipe 14 and the second output pipe 15, they can separate and output hydrogen and oxygen, while facilitating the cleaning or replacement of the pipes.

[0035] In this embodiment, the temperature control assembly includes a cooling box 16 fixedly connected inside the housing 1, a temperature sensor fixedly connected inside the first electrolysis cylinder 10 and the second electrolysis cylinder 11, and a PTC heating plate. Temperature sensors are also fixedly connected inside the first electrolysis cylinder 10 and the second electrolysis cylinder 11. A controller is installed inside the housing 1. Multiple sets of heat-absorbing tubes 21 surround the outside of the first electrolysis cylinder 10 and the second electrolysis cylinder 11. Fixed pipes 22 are fixedly connected to both ends of each heat-absorbing tube 21. An inlet pipe 23 and an outlet pipe 24 are fixedly connected to the outside of each of the two fixed pipes 22. Both the inlet pipe 23 and the outlet pipe 24 are fixedly connected. A first water pump is fixedly connected inside the cooling chamber 16, and its output end is fixedly connected to the inlet pipe 23. The first water pump, temperature sensor, and PTC heating plate are all electrically coupled to the controller. Multiple sets of heat dissipation fins 17 are fixedly connected to the outside of the cooling chamber 16. A fan 3 is fixedly connected inside the chamber 1, and the fan 3 corresponds to the heat dissipation fins 17. Heat dissipation vents 26 are provided on both sides of the chamber 1. The temperature sensor in the temperature control component monitors the temperature inside the electrolysis cylinder in real time and transmits the data to the controller. The controller automatically adjusts the operation of the PTC heating plate or the first water pump according to the set temperature. When the temperature is too low, the PTC heating plate is energized and heats up, raising the electrolysis environment temperature. When the temperature is too high, the first water pump starts, transporting the coolant in the cooling chamber 16 to the heat absorption pipe 21 through the inlet pipe 23. The heat absorption pipe 21 surrounds the outside of the electrolysis cylinder, quickly absorbs heat, and then flows back to the cooling chamber 16 through the outlet pipe 24, completing the cooling cycle.

[0036] The heat dissipation fins 17 on the outside of the cooling box 16 increase the heat dissipation area. Together with the fan 3 in the box 1, they accelerate the airflow and expel the heat inside the cooling box 16 through the heat dissipation vent 26, ensuring that the coolant can continuously and efficiently cool down.

[0037] In this embodiment, a water tank 4 and an electrolyte tank 5 are fixedly connected to the outside of the housing 1. A first pipe 6 and a second pipe 7 are fixedly connected to the outside of the water tank 4. The first pipe 6 is fixedly connected inside the first electrolytic cylinder 10, and the second pipe 7 is fixedly connected inside the second electrolytic cylinder 11. A third pipe 8 and a fourth pipe 9 are fixedly connected to the outside of the electrolyte tank 5. The third pipe 8 is fixedly connected inside the first electrolytic cylinder 10, and the fourth pipe 9 is fixedly connected inside the second electrolytic cylinder 11. The water tank 4 and the electrolyte tank 5 outside the housing 1 are connected to the electrolytic cylinders through dedicated pipes. The first pipe 6 and the second pipe 7 transport pure water from the water tank 4 to the first electrolytic cylinder 10 and the second electrolytic cylinder 11, respectively. The third pipe 8 and the fourth pipe 9 are responsible for transporting the electrolyte, ensuring that the raw materials in the two electrolytic cylinders are sufficient and in the appropriate proportion.

[0038] In this embodiment, the detection and conveying assembly includes a second water pump fixedly connected to the water tank 4, a third water pump fixedly connected to the electrolyte tank 5, a connecting pipe 20 fixedly connected to the outside of the first electrolysis cylinder 10 and the second electrolysis cylinder 11, and a guide cylinder 18 fixedly connected to the outside of the connecting pipe 20. The output end of the first water pump is fixedly connected to the first pipe 6 and the second pipe 7, and the output end of the second water pump is fixedly connected to the third pipe 8 and the fourth pipe 9. A float ball 32 is provided inside the guide cylinder 18, and a laser rangefinder sensor 19 is fixedly connected to the top of the guide cylinder 18. The first water pump, the second water pump, and the laser rangefinder sensor 19 are all electrically coupled to the controller. The detection and conveying assembly connects the inside of the two electrolysis cylinders through the connecting pipe 20 to ensure that the liquid levels in the two cylinders are consistent. The float ball 32 inside the guide cylinder 18 floats up and down with the liquid level changes. The laser rangefinder sensor 19 detects the position of the float ball 32 in real time and accurately judges the remaining amount of raw materials. When the liquid level drops to the set value, the sensor transmits a signal to the controller, which then starts the second and third water pumps to replenish pure water and electrolyte into the electrolysis cylinder through the corresponding pipes until the liquid level rises back to the normal position and then automatically stops.

[0039] In addition, in this embodiment, solenoid valves and metering valves are installed in the first output pipe 14, the second output pipe 15, the first pipeline 6, the second pipeline 7, the third pipeline 8, and the fourth pipeline 9. The solenoid valves can be remotely controlled by a controller to achieve precise regulation of raw material delivery and gas output; the metering valves can accurately measure the amount of liquid or gas passing through, facilitating the monitoring of raw material consumption and gas production, ensuring that the electrolysis reaction proceeds proportionally, and improving hydrogen production efficiency and gas purity.

[0040] The usage method of this embodiment is as follows:

[0041] In use, electricity is passed through the conductive sheet 31, with the two conductive sheets 31 being the positive and negative electrodes respectively. The conductive sheet 31 conducts electricity to the electrode rod, thereby realizing the electrolysis of pure water in the first electrolysis cylinder 10 and the second electrolysis cylinder 11. The electrolyzed hydrogen and oxygen will be discharged through the first output pipe 14 and the second output pipe 15 respectively.

[0042] When the pure water in the first electrolysis cylinder 10 and the second electrolysis cylinder 11 is nearly used up, the float 32 will slide down under gravity and approach the bottom of the guide cylinder 18. At this time, the laser range sensor 19 detects that the distance of the float 32 has dropped to the set distance, and the controller controls the second water pump and the third water pump to work. The second water pump is used to pump the pure water in the water tank 4 into the first electrolysis cylinder 10 and the second electrolysis cylinder 11 until the float 32 rises and approaches the laser range sensor 19. Then the controller shuts off the second water pump.

[0043] Meanwhile, the third water pump simultaneously draws in an appropriate amount of electrolyte into the first electrolysis cylinder 10 and the second electrolysis cylinder 11.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.

Claims

1. A device for high-efficiency hydrogen production using a drone, characterized in that, The device includes a housing (1), with a top cover (2) hinged to the top of the housing (1). An electrolytic hydrogen production assembly is installed inside the housing (1). A water tank (4) and an electrolyte tank (5) are fixedly connected to the outside of the housing (1). A detection and conveying assembly is provided between the water tank (4) and the electrolyte tank (5). The detection and conveying assembly is used to convey pure water to the electrolytic hydrogen production assembly when the pure water in the electrolytic hydrogen production assembly is used up or nearly used up. A temperature regulating assembly for adjusting the temperature of the electrolytic hydrogen production assembly is also provided inside the housing (1).

2. The apparatus for high-efficiency hydrogen production for unmanned aerial vehicles according to claim 1, characterized in that, The electrolytic hydrogen production assembly includes a first electrolytic cylinder (10) and a second electrolytic cylinder (11). The first electrolytic cylinder (10) and the second electrolytic cylinder (11) are fixedly connected to each other. A diaphragm (25) is fixedly connected between the first electrolytic cylinder (10) and the second electrolytic cylinder (11). A second contact cylinder (30) is fixedly connected to the bottom of both the first electrolytic cylinder (10) and the second electrolytic cylinder (11). An end cap is detachably connected to the top of the first electrolytic cylinder (10) and the second electrolytic cylinder (11). The end cap (12) has a first contact cylinder (29) fixedly connected to its bottom, a conductive sheet (31) fixedly connected inside the second contact cylinder (30), an electrolytic rod (28) inserted inside the second contact cylinder (30), and a first exhaust pipe (13) and a second exhaust pipe (27) fixedly connected to the top of the end cap (12). The first exhaust pipe (13) communicates with the inside of the second electrolytic cylinder (11), and the second exhaust pipe (27) communicates with the inside of the first electrolytic cylinder (10).

3. The apparatus for high-efficiency hydrogen production for unmanned aerial vehicles according to claim 2, characterized in that, One end of the first exhaust pipe (13) is detachably and fixedly connected to the second output pipe (15), and one end of the second exhaust pipe (27) is detachably and fixedly connected to the first output pipe (14). One end of the first output pipe (14) and the second output pipe (15) both extend to the outside of the housing (1).

4. The apparatus for high-efficiency hydrogen production for unmanned aerial vehicles according to claim 2, characterized in that, The temperature control assembly includes a cooling box (16) fixedly connected inside the housing (1), a temperature sensor and a PTC heating plate fixedly connected inside the first electrolytic cylinder (10) and the second electrolytic cylinder (11). The first electrolytic cylinder (10) and the second electrolytic cylinder (11) are also fixedly connected to the temperature sensor. A controller is installed inside the housing (1). The first electrolytic cylinder (10) and the second electrolytic cylinder (11) are surrounded by multiple sets of heat absorption tubes (21). The two ends of the heat absorption tubes (21) are fixedly connected to fixed pipes (22). The two fixed pipes (22) are fixedly connected to the outside of the two fixed pipes (22) respectively. An inlet pipe (23) and an outlet pipe (24) are fixedly connected to the outside of the two fixed pipes (22). The inlet pipe (23) and the outlet pipe (24) are both fixedly connected inside the cooling box (16). A first water pump is fixedly connected inside the cooling box (16). The output end of the first water pump is fixedly connected to the inlet pipe (23). The first water pump, the temperature sensor and the PTC heating plate are all electrically coupled to the controller.

5. The apparatus for high-efficiency hydrogen production for unmanned aerial vehicles according to claim 4, characterized in that, The cooling box (16) has multiple sets of heat dissipation fins (17) fixedly connected to its exterior. A fan (3) is fixedly connected inside the box body (1). The fan (3) corresponds to the heat dissipation fins (17). Heat dissipation vents (26) are provided on both sides of the box body (1).

6. The apparatus for high-efficiency hydrogen production for unmanned aerial vehicles according to claim 5, characterized in that, The outer side of the box (1) is fixedly connected to a water tank (4) and an electrolyte tank (5). The outer side of the water tank (4) is fixedly connected to a first pipe (6) and a second pipe (7). The first pipe (6) is fixedly connected inside the first electrolytic cylinder (10), and the second pipe (7) is fixedly connected inside the second electrolytic cylinder (11). The outer side of the electrolyte tank (5) is fixedly connected to a third pipe (8) and a fourth pipe (9). The third pipe (8) is fixedly connected inside the first electrolytic cylinder (10), and the fourth pipe (9) is fixedly connected inside the second electrolytic cylinder (11).

7. The apparatus for high-efficiency hydrogen production for unmanned aerial vehicles according to claim 6, characterized in that, The detection and delivery assembly includes a second water pump fixedly connected to the water tank (4), a third water pump fixedly connected to the electrolyte tank (5), a connecting pipe (20) fixedly connected to the outside of the first electrolytic cylinder (10) and the second electrolytic cylinder (11), and a guide cylinder (18) fixedly connected to the outside of the connecting pipe (20). The output end of the first water pump is fixedly connected to the first pipe (6) and the second pipe (7), and the output end of the second water pump is fixedly connected to the third pipe (8) and the fourth pipe (9); The guide cylinder (18) is equipped with a float (32), and a laser rangefinder (19) is fixedly connected to the top of the guide cylinder (18). The first water pump, the second water pump and the laser rangefinder (19) are all electrically coupled to the controller.

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