CN-224231112-U - Digital communication thermocouple sensor for monitoring vehicle temperature

Abstract

The utility model relates to the technical field of temperature detection and discloses a digital communication thermocouple sensor for monitoring the temperature of a vehicle, which comprises a hot end, wherein at least one group of wire harnesses are connected to the hot end, the other end of each wire harness is connected with a connector, and the connector is used for being connected with an upper computer or other control systems. The analog signal generated by the hot end is transmitted to the connector through the wire harness, the internal structure of the connector processes the signal, and the signal is converted into a SENT data format based on time modulation coding, so that the whole sensor system can stably work in a complex electromagnetic environment in an automobile, and electromagnetic interference is effectively resisted.

Inventors

• FU LIANBAO
• LI SONGJIE

Assignees

• 苏州福联泰克汽车电子有限公司

Dates

Publication Date

20260512

Application Date

20250401

Claims (1)

1. 1. The digital communication thermocouple sensor for monitoring the temperature of the vehicle is characterized by comprising a hot end (1), wherein the hot end (1) is at least connected with a group of wire harnesses, the other end of each wire harness is connected with a connector (12), and the connector (12) is used for being connected with an upper computer or other control systems; The wire harness comprises a connecting terminal (4), a first compensating wire (5) and a second compensating wire (6), wherein the connecting terminal (4) is used for connecting the hot end (1) with the first compensating wire (5) and the second compensating wire (6), the first compensating wire (5) is connected with the negative electrode of the hot end (1), the second compensating wire (6) is connected with the positive electrode of the hot end (1), and the other ends of the first compensating wire (5) and the second compensating wire (6) are connected with the connector (12); The connector (12) comprises a carrier (11), wherein a main board (10) is arranged in the carrier (11), and the main board (10) is used for processing, encoding and communicating signals acquired by the sensor with an external system; The hot end (1) is provided with a positioning ring (2) and a screw (3), the positioning ring (2) is fixedly connected to the hot end (1), and the screw (3) is screwed into a reserved threaded hole to fix the hot end (1) so as to prevent the hot end (1) from loosening and displacing; The wire harness is also provided with a fluorine rubber plug (7), and the fluorine rubber plug (7) covers the connecting terminal (4) and is used for protecting the connecting terminal (4) and playing a role in water resistance; The wire harness is also provided with a connector tail cover (13), and the connector tail cover (13) is used for fixing the connector (12) and the fluorine rubber plug (7); The wire harness is sleeved with a glass fiber sleeve (9), and the glass fiber sleeve (9) is sleeved outside the first compensation wire (5) and the second compensation wire (6) and is used for protecting the first compensation wire (5) and the second compensation wire (6); The hot end (1) is provided with a tail pipe (8), the tail pipe (8) is used for fixing the hot end (1) and the fluorine rubber plug (7), the tail pipe (8) is fixedly welded with the hot end (1), and the tail pipe (8) is fixedly buckled with the fluorine rubber plug (7).

Description

Digital communication thermocouple sensor for monitoring vehicle temperature Technical Field The utility model relates to the technical field of temperature detection, in particular to a digital communication thermocouple sensor for monitoring the temperature of a vehicle. Background Thermocouples are based on the Seebeck effect, i.e. when two different metals are connected to form a closed loop and the two junctions are at different temperatures, an electromotive force is generated in the circuit, which characteristic allows the thermocouple to be used to measure the temperature difference and converted into an electrical signal for processing. Conventional thermocouple sensors typically employ analog outputs to represent temperature information through voltage or current changes, however, such approaches are susceptible to electromagnetic interference (EMI) and degrade in accuracy over long distance transmissions. CAN (Controller Area Network), while providing good reliability and real-time, are suitable for many types of sensor communications, their higher cost and relatively slow data transfer rates are not optimal for exhaust system temperature monitoring. Although the two serial communication standards of RS485 and RS232 can meet the data transmission requirement in a certain range, in the automobile environment, the two serial communication standards face the problems of complex wiring, insufficient anti-interference performance and the like, and particularly, the two serial communication standards are worry when facing high-speed and low-delay application scenes. Accordingly, there is a need for a digital communication thermocouple sensor for vehicle temperature monitoring that is fast in transmission speed, easy to install, and low in cost to solve the above problems. Disclosure of utility model The utility model aims to provide a digital communication thermocouple sensor for monitoring the temperature of a vehicle, which is used for solving the problems existing in the prior art. In order to achieve the aim, the utility model provides a digital communication thermocouple sensor for monitoring the temperature of a vehicle, and the hot end is connected with at least one group of wire harnesses, the other end of each wire harness is connected with a connector, and the connector is used for being connected with an upper computer or other control systems. According to the digital communication thermocouple sensor for monitoring the vehicle temperature, the wire harness comprises a connecting terminal, a first compensating wire and a second compensating wire, wherein the connecting terminal is used for connecting the hot end with the first compensating wire and the second compensating wire, the first compensating wire is connected with the negative electrode of the hot end, the second compensating wire is connected with the positive electrode of the hot end, and the other ends of the first compensating wire and the second compensating wire are connected with the connector. According to the digital communication thermocouple sensor for monitoring the vehicle temperature, the connector comprises the carrier, and the main board is arranged in the carrier and is used for processing, encoding and communicating signals acquired by the sensor with an external system. According to the digital communication thermocouple sensor for monitoring the vehicle temperature, the locating ring and the screw are arranged on the hot end, the locating ring is fixedly connected to the hot end, and the screw is screwed into the reserved threaded hole to fix the hot end, so that the hot end is prevented from loosening and displacing. According to the digital communication thermocouple sensor for monitoring the vehicle temperature, the fluorine rubber plug is further arranged on the wire harness, and the fluorine rubber plug covers the connecting terminal and is used for protecting the connecting terminal and playing a role in water resistance. According to the digital communication thermocouple sensor for monitoring the vehicle temperature, the wiring harness is further provided with the connector tail cover, and the connector tail cover is used for fixing the connector and the fluorine rubber plug. According to the digital communication thermocouple sensor for monitoring the vehicle temperature, the glass fiber sleeve is sleeved on the wire harness, and the glass fiber sleeve is sleeved outside the first compensation wire and the second compensation wire and is used for protecting the first compensation wire and the second compensation wire. According to the digital communication thermocouple sensor for monitoring the vehicle temperature, the tail pipe is arranged on the hot end and used for fixing the hot end and the fluorine rubber plug, the tail pipe is welded and fixed with the hot end, and the tail pipe is buckled and fixed with the fluorine rubber plug. The utility model discloses the following technical effects: Accordi