Power generation device and brake control device

Abstract

Provided is a power generation device and a brake control device that ensure power supply in a trailer. The power generation device (6) includes an air power generation section (13) that generates power by compressed air from an air reservoir pipe (MR) that supplies compressed air for driving a brake device (20) possessed by a freight car from a locomotive, and a power generation control valve (14) that controls supply of compressed air from the air reservoir pipe (MR) to the air power generation section (13).

Description

Technical Field

[0001] This invention relates to a power generation device and a braking control device. Background Technology

[0002] The braking system described in Japanese Patent Application Publication No. 4-372453 includes: a brake pipe that supplies air pressure changes from a power vehicle to a trailer such as a truck or bus as an air signal; and an air storage pipe that supplies air from the power vehicle to the trailer for driving the braking device. Summary of the Invention

[0003] The problem the invention aims to solve

[0004] Furthermore, in the braking system described in Japanese Patent Application Publication No. 4-372453, the same signal is input to the braking devices of each trailer, and the braking devices are actuated by the same pressure. In such a braking system that is uniformly controlled by an air signal, a power source is required to monitor the status of each trailer. Therefore, it is necessary to ensure a power source in the trailers.

[0005] Solution for solving the problem

[0006] The power generation device for solving the above problems includes: an air power generation unit that generates electricity using compressed air from an air storage pipe, wherein compressed air for driving an air brake device in a trailer is supplied from a power vehicle to the air brake device via the air storage pipe; and a power generation control valve that controls the supply of compressed air from the air storage pipe to the air power generation unit.

[0007] According to the above structure, air for driving the air brake device is supplied to the trailer through the air storage pipe. Therefore, the trailer can obtain power by generating electricity using the air in the air storage pipe through the air power generation unit.

[0008] The aforementioned power generation device also includes a control unit, which operates using electricity supplied from the air power generation unit to control the power generation control valve.

[0009] Preferably, the above-mentioned power generation device further includes a pressure acquisition unit that acquires the pressure of the compressed air in the air storage pipe. When the pressure is less than a predetermined value, the control unit controls the power generation control valve to stop supplying compressed air from the air storage pipe to the air power generation unit.

[0010] Regarding the aforementioned power generation device, preferably, when the pressure is above the specified value, the control unit controls the power generation control valve to supply compressed air from the air storage pipe to the air power generation unit.

[0011] Regarding the aforementioned power generation device, preferably, when the air brake device is braking, the control unit controls the power generation control valve to stop supplying compressed air from the air storage pipe to the air power generation unit.

[0012] Regarding the aforementioned power generation device, preferably, the control unit determines the braking state of the air brake device based on the driving state of the brake control valve. The brake control valve is driven by a brake pipe that uses the pressure change of the air supplied from the power vehicle to the trailer as an air signal to regulate the pressure of the compressed air in the air storage pipe and supply the compressed air to the air brake device.

[0013] The braking control device for solving the above problems includes: an air generator that generates electricity using compressed air from an air storage pipe, the compressed air being supplied from a power vehicle to an air brake device in a trailer via the air storage pipe; a brake control valve that is driven by a brake pipe, which uses pressure changes in the air supplied from the power vehicle to the trailer as an air signal, to regulate the pressure of the compressed air in the air storage pipe and supply the compressed air to the air brake device; a power generation control valve that controls the supply of compressed air from the air storage pipe to the air generator; and a control unit that uses electricity supplied from the air generator to operate and control the power generation control valve.

[0014] According to the above structure, air for driving the air brake device is supplied to the trailer through the air storage pipe. Therefore, the air generator can obtain power in the trailer by generating electricity using the air in the air storage pipe. In addition, the control unit, which operates using the electricity supplied from the air generator, controls the air supply from the air storage pipe to the air generator through a power generation control valve, thereby controlling the power generation of the air generator.

[0015] Preferably, the above-mentioned braking control device also includes a coasting detection unit for detecting the coasting of the trailer, and the control unit also controls an anti-slip valve, which performs coasting control on the air brake device when the coasting detection unit detects coasting.

[0016] The effects of the invention

[0017] According to the present invention, power can be obtained from the trailer. Attached Figure Description

[0018] Figure 1 It is a diagram showing the general structure of the train.

[0019] Figure 2 This is a block diagram showing the structure of a braking system with a power generation device and a braking control device according to the first embodiment.

[0020] Figure 3 This is a flowchart illustrating the power generation process performed by the power generation device of this embodiment.

[0021] Figure 4 This is a flowchart illustrating the coasting process of the braking control device in this embodiment.

[0022] Figure 5 This is a block diagram showing the structure of a braking system with a power generation device and a braking control device according to the second embodiment. Detailed Implementation

[0023] (First Implementation)

[0024] The following reference Figures 1-4 The first embodiment of a braking system equipped with a braking control device will be described below. The braking system is controlled by the braking control device. A power generation device is installed within the braking control device.

[0025] (Train 1)

[0026] like Figure 1 As shown, in train 1, locomotive 2 is connected to multiple freight cars 3. Locomotive 2 is a powered vehicle with a power source for the movement of train 1. Freight cars 3 are trailers without a power source, towed by the powered vehicle and attached to it. Brake pipe BP and air storage pipe MR are installed in locomotive 2 and each freight car 3. Brake pipe BP and air storage pipe MR are arranged from locomotive 2 to each freight car 3. The pressure change of the air supplied from locomotive 2 to freight car 3 via brake pipe BP serves as an air signal. Air storage pipe MR supplies air from locomotive 2 to freight car 3 for driving the braking system.

[0027] (Braking System 5)

[0028] like Figure 2As shown, the braking system 5 supplies compressed air from the air storage pipe MR to the braking device 20 based on the input of an air signal from the brake pipe BP. The braking device 20 is a tread brake, disc brake, or similar device used to brake the train 1. That is, the braking device 20 includes a disc-shaped friction element mounted on a wheel or axle, a friction element that contacts the friction element to generate braking force, a drive mechanism that drives the friction element, and a cylinder that drives the drive mechanism using compressed air. The braking device 20 is provided for each wheel (not shown) of the freight car 3. Two braking devices 20 are shown on the same axle. Compressed air from the air storage pipe MR is supplied to the braking device 20 via the brake control device 10. An air signal from the brake pipe BP is input to the brake control device 10. Compressed air from the air storage pipe MR is supplied to the brake control device 10. The brake control device 10 is provided on each bogie (not shown) of the freight car 3. Alternatively, the brake control device 10 can be provided for each freight car 3. The braking device 20 is equivalent to an air brake device.

[0029] (Brake control device 10)

[0030] The braking control device 10 includes a braking control valve 11 and a braking control unit 12. The braking control valve 11 is connected to a brake pipe BP. An air signal is input to the braking control valve 11 from the brake pipe BP. Additionally, the braking control valve 11 is connected to an air storage pipe MR. Compressed air from the air storage pipe MR is supplied to the braking control valve 11. Based on the input air signal from the brake pipe BP, the braking control valve 11 regulates the pressure of the compressed air in the air storage pipe MR and supplies this compressed air to the braking device 20. The braking control unit 12 controls the braking control valve 11. The braking control unit 12 generates electricity using an air-generating unit 13 when the train 1 is in motion. The braking control valve 11 can operate based on the air signal from the brake pipe BP. Furthermore, by being controlled by the braking control unit 12, the braking control valve 11 can perform precise braking control corresponding to the situation.

[0031] The braking control unit 12 can be configured as one or more processors that execute various processes according to a computer program (software). The braking control unit 12 can also be configured as one or more dedicated hardware circuits, such as application-specific integrated circuits (ASICs), or circuits including combinations thereof, that execute at least a portion of the various processes. The braking control unit 12 includes a CPU and memories such as RAM and ROM. The memories store program code or instructions configured to cause the CPU to execute processes. Memory, or computer-readable medium, includes all usable media that can be accessed by a general-purpose or special-purpose computer. The braking control unit 12 is an arithmetic device that loads the operating system and other programs from storage units or other storage media into the memory and executes commands fetched from the memory.

[0032] A weighing valve 21 is provided between the brake control valve 11 and the brake device 20. The weighing valve 21 is provided for each wheel. The weighing valve 21 is connected to a weighing valve 22. The weighing valve 22 measures the load applied from the truck 3 to the bogie at the position where the wheel is located and outputs the load to the weighing valve 21.

[0033] An anti-slip valve 23 is provided between the weighing valve 21 and the braking device 20. The anti-slip valve 23 is provided for each braking device 20. The anti-slip valve 23 operates based on an electrical signal from the brake control unit 12. The brake control unit 12 is connected to a coasting detection unit 24. When the coasting detection unit 24 detects that the wheels of the truck 3 are coasting, it outputs a coasting detection signal to the brake control unit 12. When the coasting detection signal is input from the coasting detection unit 24 to the brake control unit 12, the brake control unit 12 outputs an electrical signal that activates the anti-slip valve 23. The brake control unit 12 then causes the anti-slip valve 23 to perform coasting control. In coasting control, after releasing the brake to prevent the wheels from coasting, the brake is applied again.

[0034] (Power Generation Unit 6)

[0035] A power generation device 6 is provided in the braking control device 10. The power generation device 6 includes an air-powered generator 13, a power generation control valve 14, and a battery 15. The air-powered generator 13 generates electricity using compressed air supplied from the air storage pipe MR. The air-powered generator 13 is, for example, a pneumatic motor, which generates electricity by rotating its rotor when supplied with compressed air from the air storage pipe MR. The power generation control valve 14 controls the supply of air from the air storage pipe MR to the air-powered generator 13. The power generation control valve 14 includes a solenoid and a valve body. The solenoid is controlled by the air-powered generator 13. The valve body is driven by the solenoid. When the power generation control valve 14 is open, compressed air from the air storage pipe MR is supplied to the air-powered generator 13; when the power generation control valve 14 is closed, the supply of compressed air from the air storage pipe MR to the air-powered generator 13 is stopped. The battery 15 stores the electricity generated by the air-powered generator 13. The braking control unit 12 uses the electricity supplied from the air-powered generator 13 to operate and control the power generation control valve 14. In addition, the air power generation unit 13 may also have a rotating body with blades installed in the pipe of compressed air supplied to the air storage pipe MR, and generate electricity by transmitting the rotation of the rotating body to the generator motor.

[0036] A detection unit 16 is provided in the connecting pipe that connects the air storage pipe MR to the brake control valve 11. The detection unit 16 detects the pressure of the compressed air in the air storage pipe MR and outputs the detection result to the brake control unit 12. In addition, the brake control unit 12 is equivalent to a pressure acquisition unit.

[0037] When the pressure of the compressed air in the air storage pipe MR is lower than a specified value, the brake control unit 12 closes the generator control valve 14 to stop the supply of compressed air from the air storage pipe MR to the air generator 13. The specified pressure of the compressed air in the air storage pipe MR is the minimum pressure required to drive the brake device 20 using the compressed air in the air storage pipe MR. Conversely, when the pressure of the compressed air in the air storage pipe MR is higher than the specified value, the brake control unit 12 opens the generator control valve 14 to supply compressed air from the air storage pipe MR to the air generator 13.

[0038] When the braking device 20 applies brakes, the braking control unit 12 closes the power generation control valve 14 to stop the supply of compressed air from the air storage pipe MR to the air power generation unit 13. The braking control unit 12 determines the braking state of the braking device 20 based on the actuation state of the braking control valve 11. That is, the braking control unit 12 determines that the braking device 20 is in a braking state when an air signal is supplied from the braking pipe BP to the braking control valve 11, or when compressed air is supplied from the braking control valve 11 to the air storage pipe MR. The braking control valve 11 is equipped with a sensor (not shown) for detecting the actuation state. The braking control unit 12 obtains the actuation state of the braking control valve 11 from this sensor.

[0039] (Power generation processing)

[0040] Next, refer to Figure 3 The power generation process performed by the brake control device 10 configured as described above will be explained. When the train 1 stops, the power generation control valve 14 opens, and compressed air is supplied to the air power generation unit 13. The air power generation unit 13 generates electricity through the compressed air in the air storage pipe MR, and the brake control unit 12 is activated when a certain amount of power is accumulated in the battery 15.

[0041] like Figure 3 As shown, the brake control device 10 determines whether the train 1 is in motion (step S11). That is, the brake control unit 12 determines whether the train 1 is in motion due to the supply of compressed air from the air storage pipe MR. Here, "in motion" means that the locomotive 2 has started. Then, if the brake control unit 12 determines that the train 1 is not in motion (step S11: "No"), it waits until the train 1 becomes in motion.

[0042] On the other hand, when the braking control device 10 determines that the train 1 is in motion (step S11: "Yes"), it proceeds to step S12.

[0043] Next, the brake control unit 10 determines whether the brake device 20 is in a state of generating braking force on the truck 3 (braking state) (step S12). That is, the brake control unit 12 determines that the brake device 20 is in a braking state when an air signal is input from the brake pipe BP to the brake control valve 11, or when compressed air is supplied from the brake control valve 11 to the air storage pipe MR.

[0044] Then, when the brake control unit 12 determines that the brake device 20 is in a braking state (step S12: "Yes"), it closes the power generation control valve 14 (step S15). That is, compressed air from the air storage pipe MR is being used in the brake device 20, so the brake control unit 12 stops supplying compressed air from the air storage pipe MR to the air power generation unit 13 by closing the power generation control valve 14.

[0045] On the other hand, if the braking control unit 12 determines that the braking device 20 is not in a braking state (step S12: "No"), it proceeds to step S13.

[0046] The brake control device 10 determines whether the pressure of the compressed air in the air storage pipe MR is above a specified value (step S13). The specified value is the minimum pressure of the compressed air in the air storage pipe MR required to drive the brake device 20 through the compressed air in the air storage pipe MR.

[0047] Then, if the brake control unit 12 determines that the pressure of the compressed air in the air storage pipe MR is less than a predetermined value (step S13: "No"), it closes the power generation control valve 14 (step S15). That is, when the pressure of the compressed air in the air storage pipe MR drops, the brake control unit 12 closes the power generation control valve 14 to stop the supply of compressed air from the air storage pipe MR to the air power generation unit 13.

[0048] On the other hand, if the braking control unit 12 determines that the pressure of the compressed air in the air storage pipe MR is above a specified value (step S13: "Yes"), it proceeds to step S14.

[0049] The braking control device 10 opens the power generation control valve 14 (step S14). That is, the train 1 is not braking, and the pressure of the compressed air in the air storage pipe MR is above a predetermined value. Therefore, the braking control unit 12 opens the power generation control valve 14 to supply compressed air from the air storage pipe MR to the air power generation unit 13. The air power generation unit 13 uses the compressed air supplied from the air storage pipe MR to generate electricity and to charge the battery 15. In addition, the braking control unit 12 can also control the power generation control valve 14 based on the charge level of the battery 15. More specifically, it is also possible to close the power generation control valve 14 to stop power generation when the charge level reaches a first threshold, and then open the power generation control valve 14 to generate electricity when the charge level decreases to a second threshold lower than the first threshold.

[0050] Next, the brake control device 10 determines whether the train 1 has stopped (step S16). More specifically, the brake control unit 12 determines whether the train 1 has stopped due to the cessation of the supply of compressed air from the air storage pipe MR. Braking the train 1 while it is in motion requires air from the air storage pipe MR; therefore, the cessation of the supply of compressed air from the air storage pipe MR means that the train 1 has stopped. When the brake control unit 12 determines that the train 1 has not stopped (step S16: "No"), it proceeds to step S12.

[0051] On the other hand, when the braking control unit 12 determines that the train 1 has stopped (step S16: "Yes"), it proceeds to step S17.

[0052] The brake control device 10 closes the generator control valve 14 (step S17). That is, in order to prevent compressed air from the air storage pipe MR from being supplied to the air generator 13, the brake control unit 12 closes the generator control valve 14 to stop the supply of compressed air from the air storage pipe MR to the air generator 13.

[0053] (Glide handling)

[0054] Next, refer to Figure 4 To illustrate the coasting process performed by the braking control device 10.

[0055] The braking control device 10 determines whether slippage is detected while the train 1 is in motion (step S21). That is, the braking control unit 12 determines whether slippage has been detected by the slippage detection unit 24 and outputs a slippage detection signal. Then, if no slippage is detected (step S21: "No"), the braking control unit 12 enters a standby state to detect slippage.

[0056] On the other hand, when the braking control device 10 determines that coasting has been detected (step S21: "Yes"), it performs coasting control (step S22). That is, the braking control unit 12 outputs an electrical signal to activate the anti-slip valve 23, thereby causing the anti-slip valve 23 to perform coasting control.

[0057] As described above, by providing a power generation device 6 to the brake control device 10, the brake control device 10 can obtain power. Therefore, the brake control unit 12, which operates using the power generated by the power generation device, controls the brake control valve 11, thereby enabling brake control corresponding to the situation. In addition, a coasting detection unit 24, which requires power, can be provided, and the brake control unit 12 can control the anti-slip valve 23 based on the detection result of the coasting detection unit 24.

[0058] Furthermore, by adding a generator 6 to trailers such as trucks 3 that lack power, power can be obtained in the trailer. Moreover, by ensuring power supply, the following additional values ​​can be provided: coasting control; highly responsive braking control; the addition of sensors to monitor the status of trucks 3 and the cargo stacked on trucks 3; and the addition of wireless communication functionality between the braking control unit 12 and an external terminal.

[0059] Next, the effects of the first embodiment will be explained.

[0060] (1-1) The air-powered generator 13 generates electricity from compressed air supplied from the air storage pipe MR, which supplies compressed air for driving the braking device 20, thereby enabling power to be obtained in the truck 3. The air storage pipe MR is an existing device, and the compressed air from the air storage pipe MR is supplied to each truck 3. Therefore, a stable power supply can be ensured in the truck 3 by adding a generator 6 to the part of the truck 3 from which compressed air is supplied from the air storage pipe MR.

[0061] (1-2) By providing a power generation control valve 14 that controls the supply of compressed air from the air storage pipe MR to the air power generation unit 13, the power generation of the air power generation unit 13 can be controlled.

[0062] (1-3) When the pressure of the compressed air in the air storage pipe MR is less than a specified value, the brake control unit 12 controls the power generation control valve 14 to stop supplying compressed air from the air storage pipe MR to the air power generation unit 13. Therefore, it is possible to prevent the pressure of the compressed air in the air storage pipe MR from decreasing to less than a specified value, thereby ensuring the pressure of the compressed air used in the drive of the brake device 20.

[0063] (1-4) When the pressure of the compressed air in the air storage pipe MR is above a specified value, the brake control unit 12 controls the power generation control valve 14 to supply compressed air from the air storage pipe MR to the air power generation unit 13. Therefore, when the pressure of the compressed air in the air storage pipe MR is above a specified value, the power generation device 6 can automatically make the air power generation unit 13 generate electricity without human operation.

[0064] (1-5) When the braking device 20 is braking, the braking control unit 12 controls the power generation control valve 14 to stop the supply of compressed air from the air storage pipe MR to the air power generation unit 13. Therefore, it is possible to suppress the situation where the pressure of the compressed air in the air storage pipe MR decreases when using the compressed air in the air storage pipe MR, thereby ensuring the pressure of the compressed air used in the driving of the braking device 20.

[0065] (1-6) The brake control unit 12, which operates using electricity supplied from the air-powered generator 13, also controls the anti-skid valve 23. Therefore, even in a freight car 3 that is not supplied with power from the locomotive 2, the brake control unit 12 can control the brake device 20 in accordance with the condition of the freight car 3.

[0066] (Second Implementation)

[0067] The following reference Figure 5 A second embodiment of the braking system, comprising a power generation device and a braking control device, will be described. In this embodiment, the air circuit differs from that of the first embodiment. The following description focuses on the differences from the first embodiment.

[0068] (Brake control device 10)

[0069] like Figure 5 As shown, the brake control device 10, in addition to the brake control valve 11 and the brake control unit 12, also includes an electrical command control valve 17 and a relay valve 18. The electrical command control valve 17 is connected to an air storage pipe MR. The brake control unit 12 is electrically connected to the electrical command control valve 17 and controls the electrical command control valve 17. The brake control unit 12 obtains information from the electrical command control valve 17 regarding whether compressed air from the air storage pipe MR is supplied to the electrical command control valve 17. The brake control unit 12 does not control the brake control valve 11. Therefore, it is not necessary to electrically connect the brake control valve 11 to the brake control unit 12.

[0070] A relay valve 18 is located between the brake control valve 11 and the electrical command control valve 17. Compressed air from the brake control valve 11 and compressed air from the electrical command control valve 17 are supplied to the relay valve 18. The relay valve 18 supplies the braking device 20 with the compressed air from the brake control valve 11 and the compressed air from the electrical command control valve 17, based on the higher pressure.

[0071] If an electrical command control valve 17 and a relay valve 18 are added, the electrical command control valve 17 and the relay valve 18 can be configured by connecting the relay valve 18, which is connected to the electrical command control valve 17, between the brake control valve 11 and the brake device 20. Additionally, a connecting pipe from the air storage pipe MR is used to connect the electrical command control valve 17.

[0072] Next, the effects of the second embodiment will be explained. In addition to achieving the effects of (1-1) to (1-5) of the first embodiment, the following effects are also achieved.

[0073] (2-1) By controlling the electric command control valve 17 through the brake control unit 12 and setting a relay valve 18 between the brake control valve 11 and the electric command control valve 17, the connection operation of the air storage pipe MR when adding the power generation device 6 can be made easy.

[0074] (Other implementation methods)

[0075] The above embodiments can be implemented by modifications as follows. The above embodiments and the following modifications can be combined with each other to implement them without technical inconsistencies.

[0076] In each of the above embodiments, as a condition for the air-powered generator 13 to generate electricity, it may also be necessary to add batteries when the stored power of the battery 15 is less than a predetermined value. The predetermined value of the stored power is the stored power required for the braking control unit 12 and the like to operate.

[0077] In the above embodiments, if the slip control of train 1 is not required, the anti-slip valve 23 and the slip detection unit 24 can be omitted. Furthermore, if load control is not required, the weighing valve 21 and the weighing valve 22 can be omitted.

[0078] In the above embodiments, the braking state of the braking device 20 can also be detected by sensors installed on the brake pipe BP and the braking device 20, and the braking state of the braking device 20 can be determined by the brake control unit 12. With this structure, it is possible to accurately determine whether the braking device 20 is in a braking state.

[0079] In the above embodiments, when the braking device 20 is actuated, the power generation control valve 14 is controlled to stop the supply of air from the air storage pipe MR to the air power generation unit 13. However, the power generation control valve 14 may also be opened when the braking device 20 is actuated, causing the air power generation unit 13 to generate electricity.

[0080] In the above embodiments, when the pressure of the compressed air in the air storage pipe MR is above a predetermined value, air is supplied from the air storage pipe MR to the air power generation unit 13. Conversely, when the pressure of the compressed air in the air storage pipe MR is below the predetermined value, the supply of compressed air from the air storage pipe MR to the air power generation unit 13 is stopped. However, the power generation control valve 14 may be opened regardless of the pressure of the compressed air in the air storage pipe MR to enable the air power generation unit 13 to generate electricity. In this case, the detection unit 16 may be omitted.

[0081] In the above embodiments, for a device composed of multiple objects, the multiple objects can be integrated into one unit; conversely, a device composed of a single object can be divided into multiple objects. Whether or not they are integrated is irrelevant; the configuration is sufficient to achieve the purpose of the present invention.

[0082] In the above embodiments, for a device where multiple functions are distributed, some or all of the multiple functions may also be integrated; conversely, a device that can integrate multiple functions may be configured such that some or all of the multiple functions are distributed. Whether the functions are integrated or distributed is irrelevant, as long as the configuration achieves the purpose of the present invention.

[0083] Explanation of reference numerals in the attached figures

[0084] BP: Brake pipe; MR: Air storage pipe; 1: Train; 2: Locomotive; 3: Freight car; 5: Braking system; 6: Generator; 10: Braking control device; 11: Braking control valve; 12: Braking control unit; 13: Air generator unit; 14: Generator control valve; 15: Battery; 16: Detection unit; 17: Electrical command control valve; 18: Relay valve; 20: Braking device; 21: Weighing valve; 22: Weighing valve; 23: Anti-slip valve; 24: Slipping detection unit.

Claims

1. A power generation device, comprising: An air-powered generator generates electricity using compressed air from an air storage pipe. Compressed air used to drive the air brakes in the trailer is supplied from the power vehicle to the air brakes via the air storage pipe. A power generation control valve controls the supply of compressed air from the air storage pipe to the air power generation unit; A storage battery that stores the electricity generated by the air-powered generator; as well as The control unit operates using electricity supplied from the air-powered generator to control the power generation control valve. When the air brake device is not in braking mode, the control unit controls the power generation control valve based on the battery's charge level. When the charge level reaches a first threshold, the power generation control valve is closed to stop the air-powered generator from generating electricity. When the charge level decreases to a second threshold lower than the first threshold, the power generation control valve is opened to allow the air-powered generator to generate electricity. When the air brake device is braking, the control unit controls the power generation control valve to stop supplying compressed air from the air storage pipe to the air power generation unit.

2. The power generation device according to claim 1, characterized in that, It also includes a pressure acquisition unit, which acquires the pressure of the compressed air in the air storage pipe. When the pressure is less than a specified value, the control unit controls the power generation control valve to stop supplying compressed air from the air storage pipe to the air power generation unit.

3. The power generation device according to claim 2, characterized in that, When the pressure is above the specified value, the control unit controls the power generation control valve to supply compressed air from the air storage pipe to the air power generation unit.

4. The power generation device according to claim 1, characterized in that, The control unit determines the braking state of the air brake device based on the driving state of the brake control valve. The brake control valve is driven by a brake pipe that uses the pressure change of the air supplied from the power vehicle to the trailer as an air signal to regulate the pressure of the compressed air in the air storage pipe and supply the compressed air to the air brake device.

5. A power generation device, comprising: The air generator unit installed in the trailer generates electricity using compressed air from the air storage pipe. Compressed air used to drive the air brake device in the trailer is supplied from the power vehicle to the air brake device through the air storage pipe. A power generation control valve controls the supply of compressed air from the air storage pipe to the air power generation unit; The pressure acquisition unit acquires the pressure of the compressed air in the air storage pipe; as well as The control unit operates using electricity supplied from the air-powered generator to control the power generation control valve. The control unit determines whether the air brake device is in a braking state. If it determines that the air brake device is not in a braking state, when the pressure is above a specified value, the control unit controls the power generation control valve to supply compressed air from the air storage pipe to the air power generation unit. And when the pressure is less than the specified value, the control unit controls the power generation control valve to stop supplying compressed air from the air storage pipe to the air power generation unit.

6. A braking control device, comprising: An air-powered generator generates electricity using compressed air supplied from the power vehicle through the air storage pipe to the air brake device in the trailer. A storage battery that stores the electricity generated by the air-powered generator; A brake control valve, driven by a brake pipe that uses pressure changes in the air supplied from the power vehicle to the trailer as an air signal, regulates the pressure of the compressed air in the air storage pipe and supplies the compressed air to the air brake device. A power generation control valve controls the supply of compressed air from the air storage pipe to the air power generation unit; as well as The control unit operates using electricity supplied from the air-powered generator to control the power generation control valve. When the air brake device is not in braking mode, the control unit controls the power generation control valve based on the battery's charge level. When the charge level reaches a first threshold, the power generation control valve is closed to stop the air-powered generator from generating electricity. When the charge level decreases to a second threshold lower than the first threshold, the power generation control valve is opened to allow the air-powered generator to generate electricity. When the air brake device is braking, the control unit controls the power generation control valve to stop supplying compressed air from the air storage pipe to the air power generation unit.

7. The braking control device according to claim 6, characterized in that, It also includes a coasting detection unit, which is used to detect the coasting of the trailer. The control unit also controls the anti-slip valve, which controls the air brake device to slide when the sliding detection unit detects sliding.

8. A braking control device, comprising: An air-powered generator is installed in the trailer and generates electricity through compressed air via an air storage pipe. The compressed air is supplied from the power vehicle through the air storage pipe to the air brake device in the trailer. A brake control valve, driven by a brake pipe that uses pressure changes in the air supplied from the power vehicle to the trailer as an air signal, regulates the pressure of the compressed air in the air storage pipe and supplies the compressed air to the air brake device. A power generation control valve controls the supply of compressed air from the air storage pipe to the air power generation unit; The pressure acquisition unit acquires the pressure of the compressed air in the air storage pipe; as well as The control unit operates using electricity supplied from the air-powered generator to control the power generation control valve. The control unit determines whether the air brake device is in a braking state. If it determines that the air brake device is not in a braking state, when the pressure is above a specified value, the control unit controls the power generation control valve to supply compressed air from the air storage pipe to the air power generation unit. And when the pressure is less than the specified value, the control unit controls the power generation control valve to stop supplying compressed air from the air storage pipe to the air power generation unit.

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