CN111272302A - Exhaust gas temperature sensor system - Google Patents
Exhaust gas temperature sensor system Download PDFInfo
- Publication number
- CN111272302A CN111272302A CN202010263926.5A CN202010263926A CN111272302A CN 111272302 A CN111272302 A CN 111272302A CN 202010263926 A CN202010263926 A CN 202010263926A CN 111272302 A CN111272302 A CN 111272302A
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- Prior art keywords
- temperature sensor
- exhaust gas
- signal
- controller
- sensor system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K2007/163—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements provided with specially adapted connectors
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The present application relates to an exhaust gas temperature sensor system, the exhaust gas temperature sensor system comprising: a housing; a controller disposed within the housing; one end of each exhaust temperature sensor extends into the shell and is in signal connection with the controller; the plug is arranged on the shell, is in signal connection with the controller and is used for being plugged with a target device; the exhaust temperature sensor is used for detecting the temperature of tail gas, sending a resistance signal to the controller, receiving the resistance signal by the controller, converting the resistance signal into a digital signal, and sending the digital signal to the target device through the plug. The method and the system can save the whole line layout space of the client, reduce the connection quantity of the client and the risk of multiple interfaces and save the scheme cost.
Description
Technical Field
The invention relates to an exhaust temperature sensor system, and belongs to the technical field of sensors.
Background
In recent years, with the rapid development of economy and the gradual improvement of living standard of people in China, the rigid demand of purchasing automobiles of the masses is vigorous, the automobile holding amount is in a rapid growth trend, and the increasingly serious atmospheric pollution is a problem which cannot be ignored. The main pollutants discharged by automobiles are carbon monoxide (CO), Hydrocarbon (HC), nitrogen oxide (NOx), carbon dioxide (CO2) and Particulate Matter (PM), wherein PM2.5 in automobile exhaust gas directly enters the bronchus after being inhaled into the human body, interferes with other exchange of the lung, causes diseases including asthma, bronchitis, cardiovascular diseases and the like, and seriously harms the human health.
Because automobile exhaust emission has the characteristics of specific flow property, temperature and humidity, and is different from general atmospheric environmental conditions, an exhaust temperature sensor is used. Currently, the exhaust gas emitted by automobiles is mainly absorbed, converted and cooled by active substances of catalytic converters so as to reach the emission standard, and the treatment of the exhaust gas requires a specific temperature environment, so the temperature must be detected. With the implementation of the euro IV standard, the emission of exhaust gases, as well as the complete combustion, must be controlled by pyrometry, which will become increasingly important for the protection of fittings and for exhaust system supervision
With the implementation of the six national regulations, the demand for exhaust gas temperature sensors in the aftertreatment system increases, and 2-4 exhaust gas temperature sensors are required to be installed in each vehicle. The current solution is four exhaust temperature sensors, which are connected to the control system by adjusting the length of the wire harness. The current exhaust temperature is tested separately. However, this solution has the following drawbacks:
1) the number of wire harnesses is large, the wiring is complex, a plurality of connectors are installed, and failure points are increased;
2) wiring harnesses and connectors are costly;
3) and the number of the ECU pairs of the end connectors is large, and the cost is high.
Disclosure of Invention
The invention aims to provide an exhaust temperature sensor system which can save the whole line layout space of a client, reduce the connection quantity of the client and the risk of multiple interfaces and save the scheme cost.
In order to achieve the purpose, the invention provides the following technical scheme: an exhaust gas temperature sensor system, comprising:
a housing;
a controller disposed within the housing;
one end of each exhaust temperature sensor extends into the shell and is in signal connection with the controller;
the plug is arranged on the shell, is in signal connection with the controller and is used for being plugged with a target device;
the exhaust temperature sensor is used for detecting the temperature of tail gas, sending a resistance signal to the controller, receiving the resistance signal by the controller, converting the resistance signal into a digital signal, and sending the digital signal to the target device through the plug.
Further, each exhaust temperature sensor comprises a resistance probe for detecting temperature, and the resistance probe is connected with the shell through a connecting part.
Further, the resistance probe is a PT200 armored platinum thermal resistance probe.
Further, each exhaust temperature sensor also comprises a mounting nut which is connected with the resistance probe and is used for positioning when being connected with a target device.
Further, the controller comprises a plurality of temperature detection modules, and each temperature detection module is in signal connection with each exhaust temperature sensor; the temperature detection module is used for converting the resistance signal into a voltage signal.
Further, the temperature acquisition module is a PTC temperature detection circuit in signal connection with the controller.
Further, the controller includes an ADC module to convert the voltage signal to a digital signal.
Further, the plug is a CAN bus plug.
Further, the shell is also provided with a mounting seat used for mounting the exhaust temperature sensor system and a target device.
The invention has the beneficial effects that: through being provided with the controller, and with a plurality of exhaust temperature sensor and plug and controller signal connection with integrated setting, then peg graft with signal connection with the target device again, need not to carry out the wiring between exhaust temperature sensor and target device, and only need be provided with an interface casing and reach the purpose of information interaction. The exhaust temperature sensor is used for detecting the temperature of the tail gas to obtain a corresponding resistance signal and sending the resistance signal to the controller, the controller converts the resistance signal into a digital signal and sends the digital signal to the target device through the plug, the whole line layout space of the client is saved, the connection quantity of the client is reduced, the risk of multiple interfaces is reduced, and the scheme cost is saved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of an exhaust gas temperature sensor system of the present invention.
Fig. 2 is another schematic diagram of the exhaust gas temperature sensor system of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1 and fig. 2, an exhaust temperature sensor system in a preferred embodiment of the invention is used for monitoring the temperature of the exhaust gas or the temperature of the exhaust gas of an automobile, and the application thereof is not specifically limited herein. Exhaust temperature sensor system includes casing 1, sets up controller in the casing 1, a plurality of with controller signal connection's exhaust temperature sensor 2 and setting are in plug 3 on the casing 1, every exhaust temperature sensor 2's one end stretch into in the casing 1 with controller signal connection, plug 3 with controller signal connection just is used for pegging graft with the target device. In the present embodiment, the number of the exhaust temperature sensors 2 is four, wherein three exhaust temperature sensors 2 are disposed on one side of the housing 1, and another exhaust temperature sensor 2 is disposed on the other side of the housing 1 and is close to the plug 3. Indeed, in other embodiments, the number of the exhaust gas temperature sensors 2 may be other, and is not limited specifically herein, depending on the actual situation.
The exhaust temperature sensor 2 is used for detecting the temperature of the exhaust gas to obtain a resistance signal and sending the resistance signal to the controller, and the controller receives the resistance signal, converts the resistance signal into a digital signal and sends the digital signal to the target device through the plug 3. In this embodiment, the target device is a vehicle, but in other embodiments, the target device may be other devices, which are not specifically limited herein, depending on the actual situation.
The controller comprises a temperature detection module and an ADC (analog to digital converter) module, wherein the temperature detection module is used for converting the resistance signal into a voltage signal, the ADC module is used for converting the voltage signal into a digital signal, then the digital signal is calculated into a temperature value through the controller, and the temperature value is sent to the target device through the plug 3. In this embodiment, the plug 3 is a CAN bus plug 3 for plugging with a CAN bus. Indeed, in other embodiments, the plug 3 may be other, and is not limited herein, depending on the actual situation.
In this embodiment, the temperature detection module is provided with a plurality of, and the temperature detection module is the same with exhaust temperature sensor's quantity, every temperature detection module and 2 signal connection of every exhaust temperature sensor. The temperature detection module is a PTC temperature detection circuit in signal connection with the controller, the PTC temperature detection circuit converts temperature signals into voltage signals, each path of PCT temperature detection circuit is independent and does not influence each other, any path of PCT temperature detection circuit breaks down, and other circuits can still work normally.
Each exhaust temperature sensor 2 includes a resistance probe 21 for detecting temperature, the resistance probe is in signal connection with the temperature detection module and is connected with the housing through a connection portion 23, the connection portion 23 is of a conventional structure, and details are not repeated herein. Each exhaust temperature sensor 2 further comprises a mounting nut 22 which is connected with the resistance probe 21 and used for positioning when being connected with a target device, so that the whole exhaust temperature sensor system is quickly and conveniently mounted. In this embodiment, the resistance probe 21 is a PT200 armored platinum thermal resistance probe 21, which measures temperature by using the change of its own resistance value of platinum when the temperature changes, and the platinum thermal resistance has the advantages of high accuracy, small deviation, stable electrical performance, high reliability, high mechanical strength, shock resistance, flexible winding, convenient installation, long service life, and the like.
The exhaust temperature sensor system further comprises an overvoltage protection module, an undervoltage protection module, a short-circuit protection module, a resistance probe open-circuit detection module and a fault diagnosis module which are in signal connection with each exhaust temperature sensor 2, wherein the modules are all conventional circuits and integrated with the controller, and the details are omitted here.
The shell 1 is further provided with a mounting seat 4 used for mounting the exhaust temperature sensor system and a target device, and the mounting seat 4 is arranged on the shell 1. In order to make the exhaust gas temperature sensor system more fixed to be installed, at least two mounting seats 4 are provided on the housing 1 to interface with a target device.
In summary, the following steps: through being provided with the controller, and with a plurality of exhaust temperature sensor 2 and plug 3 with integrated setting with controller signal connection, then peg graft with signal connection with the target device again, need not to carry out the wiring between exhaust temperature sensor 2 and target device, and only need be provided with an interface casing and reach the purpose of information interaction. The exhaust temperature sensor 2 is used for detecting the temperature of the tail gas to obtain a temperature signal, converting the temperature signal into a voltage signal and sending the voltage signal to the controller, converting the voltage signal into a digital signal by the controller and sending the digital signal to the target device through the plug 3, so that the whole line layout space of the client is saved, the connection quantity of the client and the risk of multiple interfaces are reduced, and the scheme cost is saved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. An exhaust gas temperature sensor system, comprising:
a housing;
a controller disposed within the housing;
one end of each exhaust temperature sensor extends into the shell and is in signal connection with the controller;
the plug is arranged on the shell, is in signal connection with the controller and is used for being plugged with a target device;
the exhaust temperature sensor is used for detecting the temperature of tail gas, sending a resistance signal to the controller, receiving the resistance signal by the controller, converting the resistance signal into a digital signal, and sending the digital signal to the target device through the plug.
2. The exhaust gas temperature sensor system according to claim 1, wherein each of said exhaust gas temperature sensors includes a resistance probe for sensing temperature, said resistance probe being connected to said housing by a connection.
3. The exhaust gas temperature sensor system according to claim 2, wherein the resistance probe is a PT200 armored platinum thermal resistance probe.
4. The exhaust gas temperature sensor system according to claim 2, wherein each of said exhaust gas temperature sensors further comprises a mounting nut for positioning when connected to said resistance probe and to a target device.
5. The exhaust gas temperature sensor system according to claim 1, wherein said controller includes a plurality of temperature sensing modules, each of said temperature sensing modules being in signal communication with each of said exhaust gas temperature sensors; the temperature detection module is used for converting the resistance signal into a voltage signal.
6. The exhaust gas temperature sensor system according to claim 5, wherein the temperature acquisition module is a PTC temperature detection circuit in signal connection with the controller.
7. The exhaust gas temperature sensor system according to claim 1, wherein the controller includes an ADC module to convert the voltage signal to a digital signal.
8. The exhaust gas temperature sensor system of claim 1, wherein the plug is a CAN bus plug.
9. The exhaust gas temperature sensor system according to claim 1, wherein the housing is further provided with a mounting seat for mounting the exhaust gas temperature sensor system with a target device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010263926.5A CN111272302A (en) | 2020-04-07 | 2020-04-07 | Exhaust gas temperature sensor system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010263926.5A CN111272302A (en) | 2020-04-07 | 2020-04-07 | Exhaust gas temperature sensor system |
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| Publication Number | Publication Date |
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| CN111272302A true CN111272302A (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010263926.5A Pending CN111272302A (en) | 2020-04-07 | 2020-04-07 | Exhaust gas temperature sensor system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114763758A (en) * | 2021-05-25 | 2022-07-19 | 上海陌凛传感科技有限公司 | Intelligent exhaust temperature sensor and application method thereof |
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2020
- 2020-04-07 CN CN202010263926.5A patent/CN111272302A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114763758A (en) * | 2021-05-25 | 2022-07-19 | 上海陌凛传感科技有限公司 | Intelligent exhaust temperature sensor and application method thereof |
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