Please select the most similar patent number from A, B, C and D. Which number is?
A vehicle interior air dehumidifying system, comprising a dehumidifying apparatus (10), an air quality monitoring apparatus (30), and a master controller (20). The air quality monitoring apparatus (30) is provided in the interior of a vehicle, electrically connected to the master controller (20), and used for monitoring a quality parameter of the air inside the vehicle, acquiring monitoring data, and transmitting the monitoring data to the master controller (20). The master controller (20) receives the monitoring data, generates, on the basis of the monitoring data, a control instruction, and transmits same to the dehumidifying apparatus (10). The dehumidifying apparatus (10) is provided in the interior of the vehicle, electrically connected to the master controller (20), and used for dehumidifying the air inside the vehicle on the basis of the control instruction received. The present system dehumidifies the air inside the vehicle via the dehumidifying apparatus when the air inside the vehicle is humid, thus providing a comfortable driving environment inside the vehicle.
A: An electromagnetic radiation monitoring system for use within a vehicle, comprising an electromagnetic radiation monitoring device (20), a prompting device (30) and a main controller (10), wherein the electromagnetic radiation monitoring device (20) is arranged inside an vehicle, electrically connected to the main controller (10), and used for monitoring electromagnetic radiation intensity within the vehicle, acquiring monitoring data and sending the monitoring data to the main controller (10), the main controller (10) is used for receiving the monitoring data, and sending prompting information to the prompting device (30) according to the monitoring data; the prompting device (30) is electrically connected to the main controller (10), and used for receiving the prompting information, and providing prompting according to the prompting information. The present invention allows a user to monitor the intensity of electromagnetic radiation in a vehicle, and be informed of the electromagnetic radiation intensity inside of the vehicle in a real-time manner.
B: A vehicle negative ion air purifier, comprising a purifier main body (1), one side of a lower end of the purifier main body (1) having multiple air inlets (2), an air humidity detector (7), an air quality detector (8), a touch screen (9) and a master switch (10) are provided at an upper end of the air inlets (2), a control chip (11) is internally provided at one side of an upper end of the purifier main body (1), a support base (13) is internally provided at a bottom end of the purifier main body (1), a drive motor (15) is provided at an upper end of the support base (13), a fan (16) is provided at an upper end of the drive motor (15), a fan outlet (18) is provided at one side of the fan (16), one end of the fan outlet (18) is connected to a humidifier (19), a negative ion generator (20) is provided at two sides of the humidifier (19), an air outlet (21) is provided at one side of the humidifier (19), one end of the air outlet (21) being connected to an essential oil aromatherapy box (22), and a bottom end of a support frame (23) is provided with a suction cup (26), used to fix the purifier. The present purifier not only can purify air, but also can adjust degree of air humidity, decreasing passenger fatigue, and is stably mounted in a vehicle.
C: Disclosed is an automobile display system (100), comprising an automobile interior control circuit (10) and a display device (20) electrically connected to the automobile interior control circuit (10), wherein the display device (20) comprises a first display screen (210) provided in the middle of a steering wheel (200), and the automobile interior control circuit (10) controls a display interface of the first display screen (210) so same maintains a horizontal display state. With the display device (20) being provided on the steering wheel (200) and being able to, when the steering wheel (200) is rotated, keep the display interface of the display device (20) in a display state with a certain angle, such as the horizontal display state, the observation of a driver is facilitated.
D: Provided is a health protection system for train occupants in a polluted environment in a train, comprising a basic data acquisition module, a train external air quality prediction module, a train internal air quality prediction module, and a ventilation strategy formulation module. The basic data obtaining module obtains basic data; the train external air quality prediction module predicts the external air quality of a train; the train internal air quality prediction module predicts the internal air quality of the train; the ventilation strategy formulation module formulates a ventilation strategy and protects the health of train occupants. Also provided is a method of the health protection system for train occupants in a polluted environment in a train. According to obtained train internal and external air quality data, train internal and external air quality data information is predicted and a ventilation strategy is formulated; therefore, the corresponding ventilation strategy can be formulated for the train internal and external air quality data, so as to protect the health of train occupants, and high reliability and high accuracy are achieved.
Answer: B