CN205909869U - Intelligent environmental sensor - Google Patents
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- CN205909869U CN205909869U CN201620727015.2U CN201620727015U CN205909869U CN 205909869 U CN205909869 U CN 205909869U CN 201620727015 U CN201620727015 U CN 201620727015U CN 205909869 U CN205909869 U CN 205909869U
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Abstract
The utility model discloses an intelligent environmental sensor, it includes temperature detection module, humidity detection module, pressure detection module, establishs with above -mentioned each module and is connected and carries out the little the control unit of the intelligent signal processing who handles to the associated data, and provide the power module of electric energy for each part, still include a communication module who is connected with the little the control unit of signal processing, signal processing declines and passes through after information that the control unit detected temperature detection module, humidity detection module, pressure detection module is handled communication module output, external control signal to and need interactive information to send the little the control unit of signal processing to through communication module, and handle or distribute by the little the control unit of signal processing. The utility model discloses temperature, the humidity parameter of measurement measurand that can the high accuracy to and the ambient pressure parameter, and pass through communication module fast transmission for the engine control unit, and possess the fault self diagnosis function after carrying out intelligent operation.
Description
Technical Field
The utility model relates to an environmental sensor, in particular to intelligent environmental sensor.
Background
At present, an environmental sensor in the market is mainly integrated and packaged by adopting a thermistor, an AD digital collector and the like, and generally has the advantages that the temperature and pressure signal acquisition does not have a humidity measurement function, or the humidity measurement accuracy is not enough. Because the mechanical digital acquisition, transmission, AD conversion and numerical value output are adopted, the measurement mode has slow signal transmission, and the control unit needs to have a digital processing function, so that the cost of a control unit is increased; the signal acquisition and processing mode has no fault self-diagnosis function and low intelligent degree. The method has great limitations, mainly manifested in that the environmental sensors in the market can only test the temperature, humidity and pressure inside the pipeline, and the measured pressure is not the actual pressure of the local external environment due to the influence of various factors such as air flow inside the pipeline, so that the local external atmospheric pressure cannot be accurately tested independently.
SUMMERY OF THE UTILITY MODEL
In view of the above insufficiency or the above deficiency, the technical problem to be solved by the present invention is to provide an intelligent sensor.
The utility model comprises a temperature detection module, a humidity detection module, a pressure detection module, and a signal processing micro control unit which is connected with the modules and intelligently processes the related data; and a power module for supplying power to each part;
the device also comprises a communication module connected with the signal processing micro-control unit, and the signal processing micro-control unit processes information detected by the temperature detection module, the humidity detection module and the pressure detection module and then outputs the processed information through the communication module; the external control signal and the information needing to be interacted are sent to the signal processing micro control unit through the communication module and processed or distributed by the signal processing micro control unit.
Preferably, the device further comprises a display module, wherein the display module is connected with the signal processing micro-control unit; the display module displays the output of the signal processing micro-control unit;
or the communication module is connected with the ECU of the engine, is transmitted to the ECU of the engine through the communication module, and is displayed by the upper computer of the ECU.
Preferably, the communication module is a CAN bus communication module, which includes a CAN transceiver chip and a peripheral circuit.
Preferably, the signal processing micro control unit consists of a single chip microcomputer and a corresponding peripheral circuit.
Preferably, the temperature detection module is composed of an NTC thermistor temperature sensor and a peripheral circuit;
the humidity detection module is composed of a relative humidity sensor with a built-in signal processing unit and a peripheral circuit;
the pressure detection module is composed of a pressure sensor element and a peripheral circuit, wherein the pressure sensor element integrates signal amplification and temperature compensation on a silicon chip.
Preferably, the NTCLE thermistor temperature sensor is an NTCLE100E3222GB0 temperature sensor, which is connected to the single chip microcomputer through a TEMAD2 terminal formed with a peripheral circuit, and provides detected temperature data to the single chip microcomputer; the NTC thermistor temperature sensor is connected with a 2.21K omega resistor in series, and after 5V voltage is supplied, the partial pressure values at two ends of the NTC thermistor temperature sensor are collected, and then the temperature value is calculated;
the relative humidity sensor is an HIH-4000-;
the pressure sensor is connected with the singlechip through a PREAD0 end formed by the pressure sensor and a peripheral circuit, and provides a detected pressure signal for the singlechip; when the environmental pressure is detected, the pressure detection sensor S1 outputs a proportional analog signal, and the pressure is calculated after the analog-to-digital conversion of the single chip microcomputer;
CANH and CANL leads of the CAN transceiver chip are connected to a wiring harness connector; the CANRx and CANTx lead wires are connected with the singlechip; the power supply module is connected with an external power supply through a wiring harness connector and provides a 5V direct-current constant-voltage power supply for other circuit parts; the wiring harness connector comprises 4 pins, wherein 2 pins are used for connecting a power supply input end of a power supply module, and 2 pins are used for connecting CANH and CANL leads of a CAN bus communication module.
Preferably, the gas pressure detection device comprises a first chamber and a second chamber, wherein the first chamber and the second chamber are not communicated with each other, the first chamber is communicated with a first environment, and a pressure sensor is arranged in the first chamber and used for detecting the gas pressure of the first environment; the second chamber is communicated with a second environment, and a temperature sensor and/or a humidity sensor are/is arranged in the second chamber and used for detecting the temperature and/or the humidity of the second environment.
Preferably, the first chamber is used for detecting the pressure of an open environment, and the second chamber is used for detecting the temperature and the humidity of a closed environment; the second chamber is located in the middle, and the first chamber is arranged outside the second chamber in a surrounding mode.
Preferably, the first chamber is an atmospheric chamber and the second chamber is a sampling chamber; wherein,
the shell is of a hollow structure, the hollow structure forms a cavity for mounting the PCB, a cover plate is covered on the cavity, the cavity is separated to form a sampling cavity and an atmosphere cavity, a temperature sensor and a humidity sensor on the PCB are positioned in the sampling cavity, and a pressure sensor is positioned in the atmosphere cavity; the temperature sensor P8 and the humidity sensor P10 are positioned in a sampling chamber P14, and the pressure sensor P7 is positioned in an atmospheric chamber P15 surrounding the outer side of the sampling chamber P14;
the cover plate is provided with a sampling probe positioned in the middle of the cover plate, the sampling probe is a hollow structure which protrudes towards the inner side and the outer side of the cover plate respectively, the hollow structure forms a sampling cavity after being assembled, the protruding end part of the inner side is open, and the rear end part is close to the PCB, so that a temperature sensor and a humidity sensor on the PCB are positioned in the hollow structure; the end part of the bulge at the outer side is provided with a small hole, and a sampling chamber formed inside is communicated with the tested environment; the wall that the inboard arch formed constitutes the inner wall of sampling probe, the inner wall outside constitutes the atmosphere cavity, and pressure sensor is in the atmosphere cavity, sets up the atmospheric aperture of intercommunication on the apron, the atmospheric aperture of intercommunication sets up around the sampling probe outside on the apron, makes atmosphere cavity and outside UNICOM.
Preferably, one side of the PCB, which is close to the cover plate, is covered with an insulating isolation layer, and the insulating isolation layer completely seals an opening at the end part of the inner wall of the sampling probe, so that a sampling cavity in the sampling probe is not communicated with an atmospheric cavity outside the sampling probe; an O-shaped ring is arranged outside the sampling probe in a surrounding manner; and sensor mounting holes for mounting and fixing the sensor and the pipeline are formed in two sides of the outer part of the shell.
The utility model discloses can the high accuracy measure by the temperature of measuring object, humidity parameter to and the ambient pressure parameter, and give engine control unit through communication module fast after carrying out intelligent operation processing, and possess trouble self-diagnosis function. The utility model discloses possess trouble self-diagnosis function, intelligent degree is high, signal transmission is fast, in test pipeline air current humiture, the integration also can independently test local external environment atmospheric pressure at its inside pressure sensor.
Drawings
In order to more clearly describe the related technical solutions according to the present invention, the drawings related to the present invention are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic block diagram of an electrical configuration of an intelligent environmental sensor;
FIG. 2 is an external view of an intelligent environmental sensor;
FIG. 3 is a cross-sectional view of an intelligent environmental sensor;
FIG. 4 is a diagram of the internal structure of the intelligent environmental sensor;
FIG. 5 is a bottom block diagram of an intelligent environmental sensor;
FIG. 6 is a schematic diagram of an intelligent environmental sensor circuit.
Description of reference numerals:
p1, a shell, a P2, a PCB, a P3 cover plate, a P4, an O-shaped sealing ring, an P5. insulation isolation layer, a P6 sampling probe, a P7 pressure sensor, a P8 temperature sensor, a P9 singlechip, a P10 humidity sensor, a P11 wiring harness connector, a P12 sensor mounting hole, a P13 small hole communicated with the atmosphere, a P14 sampling chamber and a P15 atmospheric chamber.
S1, a pressure detection sensor; s2, humidity detection sensor; s3, a temperature sensor; J1. a program debugging interface, J2. harness connector; u1 CAN transceiver chip; u2. single chip Microcomputer (MCU).
Detailed Description
To facilitate further understanding of the present invention by those skilled in the art and to clearly understand the technical solutions described in the present application, the related technical contents of the present invention are fully and fully disclosed, and the following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings.
Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts and/or without departing from the spirit and the essence of the present invention, even if the connection relationship or the structure of each part is changed and various corresponding changes and modifications are made according to the present invention, these corresponding changes and modifications should belong to the protection scope of the present invention.
It should be noted that the modules of the present invention, especially the involved signal processing micro control units, etc., are formed by using the existing chip and peripheral circuits, and work by loading the existing software on the chip or by using the software implemented by the existing method. The utility model discloses a hardware connection relation of each module, device is not related to the change of each part inner structure to the point, and the software that needs in the concrete application only is as the utility model discloses cooperate, coordinate with other parts in the concrete application scene, with better realization the utility model discloses effect in using, with the utility model discloses a point is irrelevant. Meanwhile, when the existing chip is matched with software to work, the used software and processing method are the existing software and method, the utility model realizes the effect and purpose without depending on the software, but realizes the purpose of the utility model by improving the hardware structure; and the scope of the claimed invention does not relate to the software itself but only to the connectivity of the various parts.
The utility model discloses an intelligent environmental sensor with CAN communication function mainly includes: the integrated PCB comprises a pressure sensor element, an NTC thermistor temperature sensor, a relative humidity sensor with a built-in signal processing unit, an intelligent signal processing micro control unit MCU and the like, which are integrated on a silicon chip through signal amplification and temperature compensation, a shell, a cover plate and the like. As shown in fig. 1, the utility model specifically comprises a temperature detection module, a humidity detection module, a pressure detection module, a display module, and a signal processing micro control unit which is connected with the above modules and intelligently processes the related data; still include one be used for the utility model discloses each part provides the power module of electric energy. The temperature detection module is composed of an NTC thermistor temperature sensor and a peripheral circuit; the humidity detection module is composed of a relative humidity sensor with a built-in signal processing unit and a peripheral circuit; the pressure detection module is composed of a pressure sensor element and a peripheral circuit, wherein the pressure sensor element integrates signal amplification and temperature compensation on a silicon chip; the signal processing micro control unit can be composed of a single chip Microcomputer (MCU) and a corresponding peripheral circuit, and can also adopt other data processing chips and corresponding peripheral circuits as required; all the parts are integrated on the PCB board and are arranged in the inner space formed by the shell and the cover plate. Specifically, the NTC thermistor temperature sensor adopts an NTCLE100E3222GB0 temperature sensor; the relative humidity sensor adopts a HIH-4000-. In addition, in order to realize the transmission of the detection data and the communication with the external equipment, the utility model also comprises a communication module, the communication module adopts a CAN bus communication module, and the MCU processes the information detected by each sensing module (comprising a temperature detection module, a humidity detection module and a pressure detection module) and then outputs the processed information through the CAN bus communication module; external control signals, information needing interaction and the like are also sent to the MCU through the CAN bus communication module and are processed or distributed by the MCU; in a specific application, the CAN bus communication module may be integrated in the signal processing micro control unit.
With reference to the schematic circuit diagram shown in fig. 6, the power module is connected to the external power source through the wiring harness plug-in J2, and the power module is filtered and rectified before providing 5V dc constant voltage power to other circuit parts. The wire harness connector J2 comprises 4 pins, wherein 2 pins are used for connecting a power supply input end of a power supply module, and 2 pins are used for connecting CANH and CANL leads of a CAN bus communication module; the plug-in unit realizes one-time connection of power supply and signals, and is convenient to install and use.
The communication module is a CAN bus communication module and comprises a CAN transceiver chip U1 and a peripheral circuit, wherein CANH and CANL leads of the CAN transceiver chip U1 are connected to a wiring harness connector J2; and the CANRx lead wire and the CANTx lead wire are connected with the MCU. And a digital signal is output outwards through CANH and CANL leads of the CAN bus communication module, the transmission data standard of the digital signal conforms to SAE J1939 protocol, and the transmission rate reaches 250 KB/s. The utility model discloses a CAN bus communication module's CAN transceiver chip connects MCU, realizes with ECU's intercommunication.
The temperature detection module comprises a temperature sensor S3 and a peripheral circuit, wherein the temperature sensor S3 integrates temperature detection and digital data output on one chip, and has strong interference resistance; one working cycle can be divided into two parts, namely temperature detection and data processing. The temperature sensor S3 is an NTC thermistor temperature sensor, which is connected with the MCU through a TEMAD2 end formed by the temperature sensor and the peripheral circuit, and provides the detected temperature data for the MCU. The NTC thermistor temperature sensor is a nonlinear NTC thermistor, the NTC thermistor is connected with a 2.21K omega resistor in series, and after 5V voltage is supplied, a voltage division value at two ends of the NTC thermistor is acquired, and then a temperature value is calculated through a corresponding algorithm, wherein the algorithm can be realized by adopting the existing algorithm.
Humidity detection module include humidity detection sensor S2 and peripheral circuit, humidity detection sensor S2 be relative humidity sensor, it is connected with MCU through HUMAD1 end to provide the humidity analog signal who detects to MCU. The humidity detection sensor S2 outputs a proportional analog signal, and the specific humidity is calculated by combining the temperature and pressure values after the MCU analog-to-digital conversion. The humidity detection sensor S2 adopts a HIH-4000-003 humidity detection sensor.
The pressure detection module comprises a pressure detection sensor S1 and a peripheral circuit, wherein the pressure detection sensor S1 adopts a pressure sensor integrating signal amplification and temperature compensation on a silicon chip, and is connected with the MCU through a PREAD0 end formed by the pressure detection sensor and the peripheral circuit and provides a detected pressure signal for the MCU. When detecting the ambient pressure, the pressure detecting sensor S1 outputs a proportional analog signal, and the pressure is calculated after the analog-to-digital conversion by the MCU.
In addition, the display module carries out digital display on the output of the single chip microcomputer, the module is an optional module and is matched according to requirements, generally, a communication module (CAN bus communication module) is connected with an ECU (electronic control unit) of the engine through sampling, data are input to the ECU of the engine through the CAN bus communication module, and the data are displayed and output by an upper computer of the ECU. The single chip microcomputer is mainly used for intelligently processing related data, and the processing comprises data conversion, data processing, data output and the like of measured original signals.
It is required to explain, for the sake of convenience right the utility model discloses well debugging of MCU operation procedure, and the utility model discloses a work such as later stage dimension guarantor has further set up the program debugging unit, and during the debugging, host computer or other debugging equipment pass through program debugging interface J1 in the unit with the utility model discloses establish and connect, carry out relevant debugging and dimension guarantor work.
The electric part of the utility model integrates pressure, temperature and humidity sensors through a PCB circuit mode, integrates signal output and the like, and has a fault self-diagnosis function; that is, the above circuits are all integrated into a PCB board and mounted integrally. The detected signals are processed by the MCU, and when the pressure, temperature and humidity data are abnormal, the intelligent environment sensor CAN send fault codes through the CAN bus communication module, so that a user CAN process faults in time, and the purpose of protecting an engine is achieved; of course, the related data CAN also be directly sent to the outside through the CAN bus communication module.
The utility model comprises a first chamber and a second chamber which are not communicated with each other, so that the pressure in the inner space of the two chambers is not influenced by each other; the first chamber is communicated with a first environment, and a pressure sensor is arranged in the first chamber and used for detecting the gas pressure of the first environment; the second chamber is communicated with a second environment, and a temperature sensor and/or a humidity sensor are/is arranged in the second chamber and used for detecting the temperature and the humidity of the second environment. The first environment may be the atmosphere, other open or closed environment; the second environment may be a closed environment or an open environment; the first environment and the second environment are not in communication with each other and may have a liquid or gaseous medium therein.
As an improvement to the above technical solution, the first chamber is used for detecting the pressure of an open environment (i.e. a first environment) (e.g. the atmospheric pressure of an atmospheric environment), and the second chamber is used for detecting the temperature and humidity of a closed environment; the second cavity is located the utility model discloses the middle part, first cavity encircle to set up the second cavity outside is kept apart through isolation mechanism between two cavities, makes it not communicate with each other.
Based on the above technical solution, the first chamber is an atmospheric chamber P15, which is communicated with the atmosphere (the environment outside the pipeline, that is, the environment where the pipeline is located, and is generally an atmospheric environment), and a pressure sensor P7 is disposed in the first chamber and is used for detecting the atmospheric pressure of the environment; the second chamber is a sampling chamber P14, which is communicated with the pipeline to be tested, wherein a temperature sensor and a humidity sensor are arranged for detecting the gas temperature and humidity of the environment in the pipeline, and the specific description is as follows:
as shown in fig. 2-5, the intelligent environmental sensor of the present embodiment is composed of a housing P1, a PCB P2 containing electrical components, a cover P3, an O-ring P4, and an insulating isolation layer P5; the shell P1 is a hollow structure, the hollow structure forms a cavity for mounting a PCB P2, a cover plate P3 is covered on the cavity, the cavity is further divided into a sampling chamber P14 and an atmosphere chamber P15, a temperature sensor P8 and a humidity sensor P10 on the PCB P2 are located in the sampling chamber P14, and a pressure sensor P7 is located in the atmosphere chamber P15; furthermore, the sampling chamber P14 and the atmospheric chamber P15 are effectively isolated by covering the PCB P2 with an insulating isolation layer P5, so that the two chambers are not communicated with each other, meanwhile, the insulating isolation layer P5 is beneficial to protecting the electrical elements on the PCB P2, and the influence of corrosion damage of the detected medium to the electrical elements or conductive gas such as water vapor on the electrical performance of the circuit is reduced and prevented. The outside both sides of casing P1 are provided with and are used for with the fixed sensor mounting hole P12 of piping erection, sensor mounting hole P12 can adopt the symmetry to set up the both sides at intelligent environmental sensor, of course, also can carry out corresponding setting according to service environment, also can adopt and set up sensor mounting hole P12 into position adjustable mode to satisfy different service environment's needs.
The electrical components on the PCB P2 include chips (including MCU and sensor chips) and corresponding peripheral circuit components, which constitute a signal processing micro control unit, a pressure detection module, a temperature detection module, a humidity detection module, a communication module, a power supply module, and a display module configured as required. Wherein the temperature sensor P8 and the humidity sensor P10 are positioned in the middle of the PCB P2 (of course, the temperature sensor P8 and the humidity sensor P10 can be arranged at other positions, but the temperature sensor P10 and the humidity sensor P3 are required to correspond to the position of the sampling probe P6 on the cover plate P3); the pressure sensor P7 is located off-center from the PCB board P2 (although it could be located elsewhere, but it must be offset outwardly from the inner wall of the sampling probe P6 on the cover P3), and the pressure sensor P7 is preferably located near the edge of the PCB board P2. With the above structure, after the cover plate P3 is attached, the temperature sensor P8 and the humidity sensor P10 are located in the sampling chamber P14, and the pressure sensor P7 is located in the atmospheric chamber P15 around the outside of the sampling chamber P14.
The scheme realizes that the PCB P2 integrates the pressure sensor P7, the temperature sensor P8 and the relative humidity sensor P10, is used for accurately measuring environmental pressure, temperature and humidity parameters, processes measured data through a single chip Microcomputer (MCU) P9 (namely U2 in a circuit schematic diagram), is connected with an Engine Control Unit (ECU) and the like through a clue connector P11 (namely J2 in the circuit schematic diagram), and outputs the acquired data through a CAN bus communication module.
The cover plate P3 is provided with a sampling probe P6 (certainly, the sampling probe P6 can be provided at other positions, but it is necessary to correspond to the positions of the temperature sensor P8 and the humidity sensor P10 on the PCB 2) located at the middle of the cover plate P3, the sampling probe P6 is a hollow structure protruding towards the inside and the outside of the cover plate P3, the hollow structure forms a sampling chamber P14 after assembly, the protruding end part at the inside is open, and the end part after assembly is close to the PCB 2, so that the temperature sensor P8 and the humidity sensor P10 on the PCB 2 are located in the hollow structure; the outer convex end part is provided with a small hole, so that the sampling chamber P14 formed inside is communicated with the environment to be detected, the sampling probe P6 adopts a convex structure, so as to be used for penetrating into the inside of the pipeline to sample and detect the environment in the pipeline, and the temperature sensor P8 and the humidity sensor P10 can detect the temperature and the humidity of the environment in the pipeline where the sampling probe P6 is located through the structure. The wall formed by the inner side protrusion forms the inner wall of the sampling probe P6, the outer part of the inner wall forms an atmosphere chamber P15 after assembly, so that the pressure sensor P7 is positioned in the atmosphere chamber P15, a small hole P13 communicated with the atmosphere is arranged on the cover plate P3, and a small hole P13 communicated with the atmosphere is arranged on the cover plate P3 and around the outer side of the sampling probe P6, for example, at the angle of 4 corners of the cover plate P3, so that the atmosphere chamber P15 is communicated with the outside. An insulating isolation layer P5 covers one side of the PCB 2 close to the cover plate P3, and the insulating isolation layer P5 completely seals the opening of the inner wall end of the sampling probe P6, so that a sampling cavity P14 in the sampling probe P6 is not communicated with an atmospheric cavity P15 outside the sampling probe P6; meanwhile, the cover insulating isolation layer P5 does not shield the temperature sensor P8, the humidity sensor P10 and the pressure sensor P7. An O-ring P4 is arranged around the outside of the sampling probe P6 to hermetically install the sampling probe P6 and a sampling hole on a pipeline.
This intelligent environmental sensor has integrateed temperature, humidity test and atmospheric pressure test function, the utility model discloses to test temperature, humidity's sampling chamber P14 and test atmospheric pressure's atmospheric chamber P15 and keep apart each other, the measured value is true local ambient atmospheric pressure value.
The utility model discloses an install and use on the pipeline shell, the fixed mode of installation is through bolted connection for sensor mounting hole P12, sampling probe P6 stretches into inside the pipeline through the sampling hole on the pipe wall, there is O type sealing washer P4 on the sensor probe, it is sealed isolated with the external world with the pipeline, the gas of pipeline enters into sensor sampling probe P6 inside sampling cavity P14 through the aperture of intensive distribution on the sampling probe P6, there are temperature sensor P8 and humidity transducer P10 to carry out the detection of temperature and humidity to the gas that gets into in the cavity inside. In order to guarantee the pure degree of sampling gas, the utility model discloses seal sampling chamber P14 and atmosphere chamber P15 completely cut off, make two cavities not intercommunicate, the method is that the sealed glue of pouring into at the inside cavity of sensor, forms insulating isolation layer P5, and this insulating isolation layer P5 is isolated with sampling chamber P14 and the atmosphere chamber P15 of sensor for two cavities do not communicate with each other. In addition, the pouring of the insulating sealant has the advantage of better ensuring the insulativity of the circuit and the components and protecting the circuit and the components from being polluted and corroded by water vapor. The environmental pressure is communicated with an atmosphere chamber P15 of the sensor through 4 small holes P13 communicated with the atmosphere on the cover plate P3, external large-particle dust is effectively blocked by the small holes communicated with the atmosphere, the cleanness degree of gas entering the chamber of the atmosphere chamber of the sensor is ensured, the atmospheric pressure is tested by the pressure sensor, and the tested atmospheric pressure is the real atmospheric pressure of the local environment.
The present invention has been described in detail with reference to the embodiments, and the present document uses specific embodiments to explain the principles and embodiments of the present invention, and the above description of the embodiments is only used to help understand the method and core ideas of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (10)
1. The intelligent environmental sensor is characterized by comprising a temperature detection module, a humidity detection module, a pressure detection module and a signal processing micro-control unit which is connected with the modules and intelligently processes related data; and a power module for supplying power to each part;
the device also comprises a communication module connected with the signal processing micro-control unit, and the signal processing micro-control unit processes information detected by the temperature detection module, the humidity detection module and the pressure detection module and then outputs the processed information through the communication module; the external control signal and the information needing to be interacted are sent to the signal processing micro control unit through the communication module and processed or distributed by the signal processing micro control unit.
2. The intelligent environmental sensor of claim 1, further comprising a display module, said display module being connected to a signal processing micro-control unit; the display module displays the output of the signal processing micro-control unit;
or the communication module is connected with the ECU of the engine, is transmitted to the ECU of the engine through the communication module, and is displayed by the upper computer of the ECU.
3. The intelligent environmental sensor of claim 1, wherein the communication module is a CAN bus communication module that includes a CAN transceiver chip and peripheral circuitry.
4. The intelligent environmental sensor according to claim 3, wherein the signal processing micro-control unit is composed of a single chip microcomputer and corresponding peripheral circuits.
5. The intelligent environmental sensor of claim 4, wherein the temperature detection module is formed by an NTC thermistor temperature sensor and a peripheral circuit;
the humidity detection module is composed of a relative humidity sensor with a built-in signal processing unit and a peripheral circuit;
the pressure detection module is composed of a pressure sensor element and a peripheral circuit, wherein the pressure sensor element integrates signal amplification and temperature compensation on a silicon chip.
6. The intelligent environmental sensor according to claim 5, wherein the NTC thermistor temperature sensor is an NTCLE100E3222GB0 temperature sensor, which is connected to the single chip microcomputer through a TEMAD2 terminal formed with a peripheral circuit, and provides detected temperature data to the single chip microcomputer; the NTC thermistor temperature sensor is connected with a 2.21K omega resistor in series, and after 5V voltage is supplied, the partial pressure values at two ends of the NTC thermistor temperature sensor are collected, and then the temperature value is calculated;
the relative humidity sensor is an HIH-4000-;
the pressure sensor is connected with the singlechip through a PREAD0 end formed by the pressure sensor and a peripheral circuit, and provides a detected pressure signal for the singlechip; when the environmental pressure is detected, the pressure detection sensor S1 outputs a proportional analog signal, and the pressure is calculated after the analog-to-digital conversion of the single chip microcomputer;
CANH and CANL leads of the CAN transceiver chip are connected to a wiring harness connector; the CANRx and CANTx lead wires are connected with the singlechip; the power supply module is connected with an external power supply through a wiring harness connector and provides a 5V direct-current constant-voltage power supply for other circuit parts; the wiring harness connector comprises 4 pins, wherein 2 pins are used for connecting a power supply input end of a power supply module, and 2 pins are used for connecting CANH and CANL leads of a CAN bus communication module.
7. The intelligent environmental sensor according to any one of claims 1 to 6, comprising a first chamber and a second chamber, wherein the first chamber and the second chamber are not communicated with each other, the first chamber is communicated with a first environment, and a pressure sensor is arranged in the first chamber and is used for detecting the gas pressure of the first environment; the second chamber is communicated with a second environment, and a temperature sensor and/or a humidity sensor are/is arranged in the second chamber and used for detecting the temperature and/or the humidity of the second environment.
8. The sensor of claim 7, wherein the first chamber is configured to detect an open ambient pressure and the second chamber is configured to detect a temperature and a humidity of an enclosed environment; the second chamber is located in the middle, and the first chamber is arranged outside the second chamber in a surrounding mode.
9. The intelligent environmental sensor of claim 7, wherein the first chamber is an atmospheric chamber and the second chamber is a sampling chamber; wherein,
the shell is of a hollow structure, the hollow structure forms a cavity for mounting the PCB, a cover plate is covered on the cavity, the cavity is separated to form a sampling cavity and an atmosphere cavity, a temperature sensor and a humidity sensor on the PCB are positioned in the sampling cavity, and a pressure sensor is positioned in the atmosphere cavity; the temperature sensor P8 and the humidity sensor P10 are positioned in a sampling chamber P14, and the pressure sensor P7 is positioned in an atmospheric chamber P15 surrounding the outer side of the sampling chamber P14;
the cover plate is provided with a sampling probe positioned in the middle of the cover plate, the sampling probe is a hollow structure which protrudes towards the inner side and the outer side of the cover plate respectively, the hollow structure forms a sampling cavity after being assembled, the protruding end part of the inner side is open, and the rear end part is close to the PCB, so that a temperature sensor and a humidity sensor on the PCB are positioned in the hollow structure; the end part of the bulge at the outer side is provided with a small hole, and a sampling chamber formed inside is communicated with the tested environment; the wall that the inboard arch formed constitutes the inner wall of sampling probe, the inner wall outside constitutes the atmosphere cavity, and pressure sensor is in the atmosphere cavity, sets up the atmospheric aperture of intercommunication on the apron, the atmospheric aperture of intercommunication sets up around the sampling probe outside on the apron, makes atmosphere cavity and outside UNICOM.
10. The intelligent environmental sensor according to claim 4, wherein an insulating isolation layer covers one side of the PCB board close to the cover plate, and the insulating isolation layer completely seals the opening at the end part of the inner wall of the sampling probe, so that a sampling cavity in the sampling probe is not communicated with an atmospheric cavity outside the sampling probe; an O-shaped ring is arranged outside the sampling probe in a surrounding manner; and sensor mounting holes for mounting and fixing the sensor and the pipeline are formed in two sides of the outer part of the shell.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768531A (en) * | 2017-03-29 | 2017-05-31 | 无锡永阳电子科技有限公司 | A kind of simple pressure sensor test system |
| CN107830951A (en) * | 2017-11-30 | 2018-03-23 | 广东诺能泰自动化技术有限公司 | A kind of battery type digital display manometer |
| CN109059981A (en) * | 2018-10-24 | 2018-12-21 | 北京机械设备研究所 | A kind of temperature, pressure and humidity detection sensor |
| CN113206892A (en) * | 2021-06-17 | 2021-08-03 | 江苏亿阀股份有限公司 | TCP communication integrated special gas and temperature sensor and control system |
| CN116358737A (en) * | 2023-03-17 | 2023-06-30 | 广州德芯半导体科技有限公司 | Preparation method and system of all-in-one intelligent sensor module |
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2016
- 2016-07-12 CN CN201620727015.2U patent/CN205909869U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768531A (en) * | 2017-03-29 | 2017-05-31 | 无锡永阳电子科技有限公司 | A kind of simple pressure sensor test system |
| CN107830951A (en) * | 2017-11-30 | 2018-03-23 | 广东诺能泰自动化技术有限公司 | A kind of battery type digital display manometer |
| CN109059981A (en) * | 2018-10-24 | 2018-12-21 | 北京机械设备研究所 | A kind of temperature, pressure and humidity detection sensor |
| CN113206892A (en) * | 2021-06-17 | 2021-08-03 | 江苏亿阀股份有限公司 | TCP communication integrated special gas and temperature sensor and control system |
| CN116358737A (en) * | 2023-03-17 | 2023-06-30 | 广州德芯半导体科技有限公司 | Preparation method and system of all-in-one intelligent sensor module |
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