Please select the most similar patent number from A, B, C and D. Which number is?
A temperature and humidity sensor mounting structure, comprising: a temperature and humidity sensor assembly (1) and a gas pipe (2); the temperature and humidity sensor assembly (1) is suspended in the gas pipe (2) and is fixed and sealed by means of a sealant; the temperature and humidity sensor assembly (1) comprises a temperature and humidity sensor (11) provided with a temperature and humidity chip (111) and a temperature and humidity sensor mounting member (12), the temperature and humidity sensor (11) being inserted from one end of an accommodating groove (121) on the temperature and humidity sensor mounting member (12) and extending to a notch (1211) at the other end of the accommodating groove, and the two being fixed by means of the sealant, the sealant being coated on the periphery of the temperature and humidity chip (111), and the temperature and humidity chip (111) being in contact with gas in the gas pipe (2) at the notch (1211) in order to sense the temperature and humidity of the gas.
A: A flexible passive wireless integrated humidity and pressure sensor, comprising an interdigital capacitive humidity sensor and an interdigital capacitive pressure sensor, wherein a humidity sensitive thin film (1), an upper metal layer (2), a flexible substrate (3), a middle metal layer (4), a medium layer (5), a lower metal layer (6) and a packaging layer (7) are successively arranged from top to bottom; the upper metal layer (2) comprises a humidity sensitive capacitor (21); the middle metal layer (4) comprises a pressure sensitive capacitor (44); the interdigital capacitive humidity sensor comprises the humidity sensitive thin film (1), the humidity sensitive capacitor (21) and the flexible substrate (3); the interdigital capacitive pressure sensor comprises the flexible substrate (3), the pressure sensitive capacitor (44), the medium layer (5), the lower metal layer (6) and the packaging layer (7). In the present integrated sensor, the humidity sensitive capacitor (21), the pressure sensitive capacitor (44), two plate capacitors and an inductance (23, 25) are connected to form a double resonance circuit. Real time wireless monitoring of the two parameters consisting of humidity and temperature is achieved, and two frequency signals do not interfere with each other. The measurement accuracy is high, and the sensor may be suitable for more environments.
B: A smart cup holder, comprising a cup holder body (1). The cup holder body (1) is a frusta-conical body with a large upper diameter and a small lower diameter; a pressure sensor (11) and a temperature and humidity sensor (12) are provided at the bottom of the cup holder body (1); a non-slip layer (13) is provided on the inner side wall of the cup holder body (1); a notch (14) is provided on the side wall of the cup holder body (1); a handle sleeve (15) for wrapping a handle is provided on the outer side wall of the cup holder body (1); a touch sensor (151), a processor, and a power module are provided on the handle sleeve (15); the pressure sensor (11), the temperature and humidity sensor (12), and the touch sensor (151) are separately connected with the processor; the pressure sensor (11), the temperature and humidity sensor (12), the touch sensor (151), and the processor are separately connected with the power module. By detecting relevant data by means of the pressure sensor (11) and the temperature and humidity sensor (12), and feeding the detected relevant data back to the processor for comprehensive analysis, the present invention can calculate the amount of water a user drinks and can also prompt the user to drink water. Moreover, the smart cup holder can prevent water from entering to influence the electrical performance.
C: Disclosed is an intelligent quilt and bed sheet system, comprising a quilt body (1) and a bed sheet (2), wherein a first temperature and humidity sensor group for detecting the temperature and humidity of a human body, and a first main board (12) connected to the first temperature and humidity sensor group are arranged inside the quilt body (1); a first CPU (121), a first power supply module (122) for providing power to the first CPU (121), and a wireless transmission module (123) for transmitting data are respectively arranged on the first main board (12); a second temperature and humidity sensor group for detecting the temperature and humidity of a human body, and a second main board (22) connected to the second temperature and humidity sensor group are arranged inside the bed sheet (2); and a second CPU (221), a second power supply module (222) for providing power to the second CPU (221), a wireless receiving module (223) for receiving data, and an alarm module (224) are respectively arranged on the second main board (22), so the coverage situation of the quilt can be monitored.
D: A cigarette holder (40). The cigarette holder (40) comprises an upper cover body (41), a sensor component (42) and a base (43). The upper cover body (41) and the base (43) separately have a hollow structure which is through at the two ends, the upper cover body (41) sleeves one end of the base (43), and an inner cavity of the cigarette holder (40) is defined by an inner surface of the upper cover body (41) and an inner surface of the base (43) together; the sensor component (42) is fixed in the inner cavity of the cigarette holder (40), and a gas through gap (46) is provided in the inner cavity of the cigarette holder (40); the sensor component (42) comprises at least one sensor (421); and the sensor (421) is a temperature sensor, a humidity sensor or a temperature and humidity sensor, and is used for detecting the temperature and/or humidity of smoke. Provided is an atomizer (50) provided with the cigarette holder (40) at one end. Also provided is an electronic cigarette (200) comprising the atomizer (50). The cigarette holder (40) can detect the temperature and/or humidity of smoke in real time.
Answer: A