CN114136472A - Sensing element and intelligent sensor/node - Google Patents
Sensing element and intelligent sensor/node Download PDFInfo
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- CN114136472A CN114136472A CN202111554687.XA CN202111554687A CN114136472A CN 114136472 A CN114136472 A CN 114136472A CN 202111554687 A CN202111554687 A CN 202111554687A CN 114136472 A CN114136472 A CN 114136472A
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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
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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
- G01K1/02—Means for indicating or recording specially adapted for thermometers
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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
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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
- G01K7/34—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using capacitative elements
- G01K7/343—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using capacitative elements the dielectric constant of which is temperature dependant
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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
- G01K7/36—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using magnetic elements, e.g. magnets, coils
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/06—Electric actuation of the alarm, e.g. using a thermally-operated switch
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Abstract
The invention discloses a sensing element and an intelligent sensor/node, based on a novel sensing element with a protection function made of a novel sensitive material, and a basic sensing element which is brand-new designed by utilizing the characteristics that the novel sensitive material is sensitive to temperature and has physical property and structure change when exceeding the warning temperature. The temperature monitoring is carried out on the working environment, particularly in the application field of electronic/electrical thermal management and electrical fire safety technology, once thermal runaway or fire disaster occurs, an alarm signal is sent out, meanwhile, protective substances carried in the material are released through the self characteristics and mechanism of the material, emergency protective measures are taken for the monitored environment and objects, further dangerous further diffusion and spreading in the initial stage are prevented, and meanwhile, first-aid gold time is strived for subsequent protective measures. Further, the method realizes the on-site treatment of the initial fire and the early detection and the initial treatment of hidden dangers and dangers, restrains the dangers at the root and the beginning, and prevents accidents in the bud.
Description
Technical Field
The invention belongs to the technical field of sensing, and particularly relates to a novel sensing element and a novel sensor with protection functions for electronic/electric thermal management and electric fire.
Background
In the process of understanding and transforming the world by human beings, it is far from enough to obtain external information only by means of the five sense organs of the human body, so that people invent a sensor capable of replacing or supplementing the functions of the five sense organs of the human body. At present, the sensor has penetrated into various aspects of daily life of people, and is widely applied to the fields of industry and agriculture, medical treatment and health, military and national defense, environmental protection and the like.
The sensor can feel appointed measurand, therefore the sensor is in perception and identification system's foremost for acquire monitoring information, and the performance of sensor direct influence whole monitoring system's performance plays decisive role to system accuracy and timeliness. With the progress of modern science and technology, especially the development of micro-electro-mechanical systems, ultra-large scale integrated circuits and other technologies, modern sensors are led to go to the development direction of miniaturization, intellectualization and networking; the sensing technology and the network technology are fused, and the object are connected through various sensing devices, a sensor network and the Internet, so that ubiquitous sensing is realized, and the sensing capability and range of human beings are enriched and enhanced; and making a decision according to the data acquired by the sensor nodes, changing the behavior of the object in a control, feedback and other modes, and the like. The brand new industries and technologies with user experience as the core have great development in various application fields, such as smart grid, smart home, smart industry, smart fire protection and other fields and industries which are closely related to our daily life and life.
With the expansion of technology and application, the sources, types and quantity of information are continuously increased, so that higher requirements are put on the performance, cost and other problems of the sensing element and the sensor, and higher requirements are put on the stability and safety of the sensing element and the sensor.
Disclosure of Invention
In order to solve the technical problems mentioned in the background, the invention provides a sensing element and an intelligent sensor/node.
In order to achieve the technical purpose, the technical scheme of the invention is as follows:
a sensing element comprises a sensing component and a measuring component, wherein the sensing component comprises a sensing unit and a conversion unit, the sensing unit is composed of a heat-sensitive microcapsule, the heat-sensitive microcapsule comprises a temperature-sensitive shell sensitive to temperature and a protective substance coated in the temperature-sensitive shell, the sensing unit and the conversion unit form a sensing model, and the input end of the measuring component is connected with the signal output end of the conversion unit; when thermal runaway or fire occurs at a monitoring point, the temperature-sensitive shell of the heat-sensitive microcapsule is activated and broken under the action of heat, the protective substance carried in the temperature-sensitive shell is released, cooling and/or flameout are realized, meanwhile, the parameter of the sensing model is influenced to change due to the fact that the temperature-sensitive microcapsule is heated and changed to cause the change of the sensitive unit, and the measuring component collects the parameter change of the sensing model in real time and converts the parameter change into an electric signal to be output.
Further, the sensing models include, but are not limited to, capacitive sensing models, resistive sensing models, magnetoelectric sensing models, and piezoelectric sensing models.
Further, the sensing unit includes, but is not limited to, a sensing model in which a sensing effect is generated due to a change in the structure of the sensing unit, a sensing effect is generated due to a change in the physical property of the sensing unit, and a composite sensing effect is generated due to a simultaneous change in the structure and physical property of the sensing unit.
Further, the conversion unit includes, but is not limited to, a conversion unit that directly outputs an electrical quantity for measurement by the measurement component, a conversion unit that converts a non-electrical quantity into an electrical quantity and then measures the electrical quantity by the measurement component, and a conversion unit that is itself an element sensor and indirectly measures a measured physical quantity by the element sensor; the conversion of the conversion unit includes, but is not limited to, the compensation, amplification, filtering, conversion and conditioning of the original signal by the signal conversion circuit.
Furthermore, the sensing model adopts a capacitance model, the conversion unit is a pair of electrode plates in the capacitance model, and the sensing unit is arranged between the electrode plates and is used as a medium in the capacitance model and/or acts on the electrode plates; when thermal runaway or fire occurs at a monitoring point, the parameters of the capacitance model are changed due to the thermal change of the heat-sensitive microcapsules of the sensitive unit, so that the capacitance value between the electrode plates is changed and is acquired by the measuring component.
Furthermore, the sensing model adopts a resistance model, the conversion unit comprises a variable resistor and an elastic part, one end of the elastic part is fixed, the other end of the elastic part is connected with the moving end of the variable resistor, and the elastic part is in a stressed state under the action of the sensing unit; when thermal runaway or fire occurs at a monitoring point, the thermal microcapsules of the sensitive units are heated and changed to cause the elastic pieces to lose force and reset to change the moving end positions of the variable resistors, so that the resistance values of the variable resistors are changed and acquired by the measuring components.
Furthermore, the sensing model adopts a magnetoelectric model, the conversion unit comprises a permanent magnet and an induction coil, the induction coil is arranged in a magnetic field generated by the permanent magnet, and the magnetic flux passing through the induction coil can be changed by arranging the sensing unit; when thermal runaway or fire occurs at a monitoring point, the heat-sensitive microcapsules of the sensitive units are heated and changed to cause the induction coils to generate induced electromotive force, and the induced electromotive force is acquired by the measuring assembly.
Furthermore, the sensing model adopts a piezoelectric model, the conversion unit comprises a piezoelectric sheet, and force is applied to the piezoelectric sheet through the sensing unit; when thermal runaway or fire occurs at a monitoring point, the pressure-sensitive microcapsules of the sensitive units are heated and changed to cause the piezoelectric sheets to deform under stress to generate voltage, and the voltage is acquired by the measuring assembly.
Further, the heat-sensitive microcapsule is a nano and/or micron-scale solid microparticle with a capsule structure; the temperature-sensing shell adopts a single-layer, multi-layer or composite structure, and the components of the temperature-sensing shell are organic materials, inorganic materials, composite materials and/or high polymer materials and composites thereof, so that the temperature-sensing shell has stable mechanical properties and structure; the protective substance comprises a functional protective substance and a phase change driving substance, the functional protective substance comprises but is not limited to a fire extinguishing substance, a cooling substance and/or a flame retardant substance, and the phase change driving substance is a substance which is subjected to phase change under the action of heat and is easy to vaporize so as to drive the functional protective substance to be sprayed out together; the sensing unit includes, but is not limited to, a sensing component formed by molding, casting, winding and/or coating the heat-sensitive microcapsules, has different shapes, sizes and capacities according to different space limitations, functional requirements and engineering designs, and is installed and integrated by means of adhesion, coating, mechanical parts and/or encapsulation.
An intelligent sensor/node comprises the sensing element, a microprocessor and a communication module, wherein the microprocessor is connected with the output end of a measuring component in the sensing element and is in communication connection with a receiving terminal or a rear-end server through the communication module, the microprocessor further analyzes and processes signals output by the measuring component, compares and judges the signals with a preset early warning threshold value, sends a judgment result to the receiving terminal or the rear-end server through the communication module, and the receiving terminal or the rear-end server sends a control command or executes corresponding operation according to the received judgment result.
Adopt the beneficial effect that above-mentioned technical scheme brought:
the invention carries out temperature monitoring on the working environment, in particular to the application field of electronic/electrical thermal management and electrical fire safety technology, once thermal runaway or fire occurs, an alarm signal is sent out, protective substances carried in the material are released through the self characteristics and mechanism of the material, emergency protective measures are taken for the monitored environment and objects, further diffusion and spread of initial dangers are prevented, and meanwhile, first aid golden time is strived for subsequent protective measures. Further, the method realizes the on-site treatment of the initial fire and the early detection and the initial treatment of hidden dangers and dangers, restrains the dangers at the root and the beginning, and prevents accidents in the bud.
Drawings
FIG. 1 is a block diagram showing the structure of embodiment 1;
FIG. 2 is a schematic diagram of an implementation of a capacitance model corresponding to a change in dielectric constant;
FIG. 3 is a schematic diagram of an implementation of a corresponding plate pitch variation in a capacitance model;
FIG. 4 is a schematic diagram of the implementation of the corresponding plate area change in the capacitance model;
FIG. 5 is a schematic diagram of the implementation of the corresponding translation scheme in the resistance model;
FIG. 6 is a schematic diagram of an implementation of a corresponding rotation scheme in a resistance model;
FIG. 7 is a schematic diagram of an implementation of corresponding motional electromotive force in a magnetoelectric model;
FIG. 8 is a schematic diagram of an implementation of a corresponding induced electromotive force in a magnetoelectric model;
FIG. 9 is a schematic diagram of an embodiment of a piezoelectric model;
fig. 10 is a block diagram of the structure of embodiment 2.
Detailed Description
The technical scheme of the invention is explained in detail in the following with the accompanying drawings.
Example 1
As shown in fig. 1, a sensing element includes a sensing component and a measuring component, the sensing component includes a sensing unit and a converting unit, the sensing unit is composed of a heat-sensitive microcapsule, the heat-sensitive microcapsule includes a temperature-sensitive shell sensitive to temperature and a protective substance coated inside the temperature-sensitive shell, the sensing unit and the converting unit form a sensing model, and an input end of the measuring component is connected with a signal output end of the converting unit; when thermal runaway or fire occurs at a monitoring point, the temperature-sensitive shell of the heat-sensitive microcapsule is activated and broken under the action of heat, the protective substance carried in the temperature-sensitive shell is released, cooling and/or flameout are realized, meanwhile, the parameter of the sensing model is influenced to change due to the fact that the temperature-sensitive microcapsule is heated and changed to cause the change of the sensitive unit, and the measuring component collects the parameter change of the sensing model in real time and converts the parameter change into an electric signal to be output.
In the present embodiment, the sensing model includes, but is not limited to, a capacitive sensing model, a resistive sensing model, a magnetoelectric sensing model, and a piezoelectric sensing model.
In this embodiment, the sensing units include, but are not limited to, a structural sensing unit generating a sensing effect due to a change in a structural parameter, a physical sensing unit generating a sensing effect due to a physical parameter, and a composite sensing unit combining the above two sensing methods.
In this embodiment, the conversion unit includes, but is not limited to, a conversion unit that directly outputs an electrical quantity for measurement by the measurement component, a conversion unit that converts a non-electrical quantity into an electrical quantity and then measures the electrical quantity by the measurement component, and a conversion unit that is itself an element sensor and indirectly measures a measured physical quantity by the element sensor; the conversion of the conversion unit includes, but is not limited to, the compensation, amplification, filtering, conversion and conditioning of the original signal by the signal conversion circuit.
In the present embodiment, the heat-sensitive microcapsule is a nano and/or micron-scale solid microparticle having a capsule structure; the temperature-sensing shell adopts a single-layer, multi-layer or composite structure, and the components of the temperature-sensing shell are organic materials, inorganic materials, composite materials and/or high polymer materials and composites thereof, so that the temperature-sensing shell has stable mechanical properties and structure; the protective substance comprises a functional protective substance and a phase change driving substance, the functional protective substance comprises but is not limited to a fire extinguishing substance, a cooling substance and/or a flame retardant substance, and the phase change driving substance is a substance which is subjected to phase change under the action of heat and is easy to vaporize so as to drive the functional protective substance to be sprayed out together; the sensing unit includes, but is not limited to, a sensing component formed by molding, casting, winding and/or coating the heat-sensitive microcapsules, has different shapes, sizes and capacities according to different space limitations, functional requirements and engineering designs, and is installed and integrated by means of adhesion, coating, mechanical parts and/or encapsulation.
There are various embodiments of the sensing model that can be implemented, as shown in FIGS. 2-9.
Scheme 1: the sensing model can adopt a capacitance model, the conversion unit is a pair of electrode plates in the capacitance model, and the sensing unit is arranged between the electrode plates and used as a medium in the capacitance model and/or acts on the electrode plates; when thermal runaway or fire occurs at a monitoring point, the parameters of the capacitance model are changed due to the thermal change of the heat-sensitive microcapsules of the sensitive unit, so that the capacitance value between the electrode plates is changed and is acquired by the measuring component.
In the capacitance model scheme, the sensing model based on the change of the dielectric constant, the change of the plate distance and the change of the plate area can realize corresponding sensing effect, and the physical property type sensing effect and the structural sensing effect in the capacitance model relate to the change of the physical property of the sensing unit in the dielectric constant changing model and the change of the structure of the sensing unit in the plate distance changing model, and the generated electric quantity can be directly measured.
Corresponding embodiments using these three parameters are shown in fig. 2-4.
Scheme 2: the sensing model can adopt a resistance model, the conversion unit comprises a variable resistor and an elastic part, one end of the elastic part is fixed, the other end of the elastic part is connected with the moving end of the variable resistor, and the elastic part is in a stressed state under the action of the sensing unit; when thermal runaway or fire occurs at a monitoring point, the thermal microcapsules of the sensitive units are heated and changed to cause the elastic pieces to lose force and reset to change the moving end positions of the variable resistors, so that the resistance values of the variable resistors are changed and acquired by the measuring components.
In the resistance model scheme, the displacement control of the moving end of the variable resistor can be realized by utilizing the translation and rotation schemes of the elastic part, mechanical quantity is converted into electrical quantity through the conversion unit, and then the electrical quantity is measured, and the two embodiments of translation and rotation are respectively corresponding to the graph in fig. 5 and the graph in fig. 6.
Scheme 3: the sensing model can adopt a magnetoelectric model, the conversion unit comprises a permanent magnet and an induction coil, the induction coil is arranged in a magnetic field generated by the permanent magnet, and the magnetic flux passing through the induction coil can be changed by arranging the sensing unit; when thermal runaway or fire occurs at a monitoring point, the heat-sensitive microcapsules of the sensitive units are heated and changed to cause the induction coils to generate induced electromotive force, and the induced electromotive force is acquired by the measuring assembly.
In the scheme of the magnetoelectric model, the magnetoelectric model can be realized by adopting a mode of generating a motional electromotive force generated by cutting the motion of a magnetic line of force, or an induced electromotive force generated by changing magnetic flux due to the change of a medium in a magnetic field, and is a sensing model using an electromagnetic effect physical phenomenon as a working principle, and fig. 7 and 8 correspond to two embodiments of generating the motional electromotive force and the induced electromotive force respectively.
Scheme 4: the sensing model can adopt a piezoelectric model, the conversion unit comprises a piezoelectric sheet, and force is applied to the piezoelectric sheet through the sensing unit; when thermal runaway or fire occurs at a monitoring point, the pressure-sensitive microcapsules of the sensitive units are heated and changed to cause the piezoelectric sheets to deform under stress to generate voltage, and the voltage is acquired by the measuring assembly.
In the scheme of the piezoelectric model, the conversion unit itself is an element sensor using a piezoelectric sheet as a sensitive element, and includes a conversion circuit for amplifying a weak electrical signal and the like, and the acquisition and measurement of a measured signal are realized by using a piezoelectric effect and performing multiple conversions, as shown in fig. 9, which is an implementation manner of the piezoelectric model.
Example 2
As shown in fig. 10, the present invention further provides an intelligent sensor/node, including the above-mentioned sensing element, further including a microprocessor and a communication module, where the microprocessor is connected to an output end of a measurement component in the sensing element, and establishes a communication connection with a receiving terminal or a back-end server through the communication module, the microprocessor further analyzes and processes a signal output by the measurement component, compares the signal with a preset early warning threshold, and sends a judgment result to the receiving terminal or the back-end server through the communication module, and the receiving terminal or the back-end server sends a control command or executes a corresponding operation according to the received judgment result.
The embodiments are only for illustrating the technical idea of the present invention, and the technical idea of the present invention is not limited thereto, and any modifications made on the basis of the technical scheme according to the technical idea of the present invention fall within the scope of the present invention.
Claims (10)
1. A sensor element, characterized by: the temperature-sensitive measuring device comprises a sensing assembly and a measuring assembly, wherein the sensing assembly comprises a sensing unit and a conversion unit, the sensing unit is composed of a temperature-sensitive microcapsule, the temperature-sensitive microcapsule comprises a temperature-sensitive shell sensitive to temperature and a protective substance coated in the temperature-sensitive shell, the sensing unit and the conversion unit form a sensing model, and the input end of the measuring assembly is connected with the signal output end of the conversion unit; when thermal runaway or fire occurs at a monitoring point, the temperature-sensitive shell of the heat-sensitive microcapsule is activated and broken under the action of heat, the protective substance carried in the temperature-sensitive shell is released, cooling and/or flameout are realized, meanwhile, the parameter of the sensing model is influenced to change due to the fact that the temperature-sensitive microcapsule is heated and changed to cause the change of the sensitive unit, and the measuring component collects the parameter change of the sensing model in real time and converts the parameter change into an electric signal to be output.
2. The sensor element of claim 1, wherein: the sensing models include, but are not limited to, capacitive sensing models, resistive sensing models, magnetoelectric sensing models, and piezoelectric sensing models.
3. The sensor element of claim 1, wherein: the sensing unit includes, but is not limited to, a sensing model in which a sensing effect is generated due to a change in the structure of the sensing unit, a sensing effect is generated due to a change in the physical property of the sensing unit, and a composite sensing effect is generated due to a simultaneous change in the structure and physical property of the sensing unit.
4. The sensor element of claim 1, wherein: the conversion unit comprises but is not limited to a conversion unit which directly outputs electrical quantity for measurement of the measurement component, a conversion unit which converts non-electrical quantity into electrical quantity and then measures the electrical quantity by the measurement component, and a conversion unit which is an element sensor and indirectly measures a measured physical quantity by using the element sensor; the conversion of the conversion unit includes, but is not limited to, the compensation, amplification, filtering, conversion and conditioning of the original signal by the signal conversion circuit.
5. The sensor element of claim 1, wherein: the sensing model adopts a capacitance model, the conversion unit is a pair of electrode plates in the capacitance model, and the sensing unit is arranged between the electrode plates and is used as a medium in the capacitance model and/or acts on the electrode plates; when thermal runaway or fire occurs at a monitoring point, the parameters of the capacitance model are changed due to the thermal change of the heat-sensitive microcapsules of the sensitive unit, so that the capacitance value between the electrode plates is changed and is acquired by the measuring component.
6. The sensor element of claim 1, wherein: the sensing model adopts a resistance model, the conversion unit comprises a variable resistor and an elastic part, one end of the elastic part is fixed, the other end of the elastic part is connected with the moving end of the variable resistor, and the elastic part is in a stressed state under the action of the sensing unit; when thermal runaway or fire occurs at a monitoring point, the thermal microcapsules of the sensitive units are heated and changed to cause the elastic pieces to lose force and reset to change the moving end positions of the variable resistors, so that the resistance values of the variable resistors are changed and acquired by the measuring components.
7. The sensor element of claim 1, wherein: the sensing model adopts a magnetoelectric model, the conversion unit comprises a permanent magnet and an induction coil, the induction coil is arranged in a magnetic field generated by the permanent magnet, and the magnetic flux passing through the induction coil can be changed by arranging the sensing unit; when thermal runaway or fire occurs at a monitoring point, the heat-sensitive microcapsules of the sensitive units are heated and changed to cause the induction coils to generate induced electromotive force, and the induced electromotive force is acquired by the measuring assembly.
8. The sensor element of claim 1, wherein: the sensing model adopts a piezoelectric model, the conversion unit comprises a piezoelectric sheet, and force is applied to the piezoelectric sheet through the sensing unit; when thermal runaway or fire occurs at a monitoring point, the pressure-sensitive microcapsules of the sensitive units are heated and changed to cause the piezoelectric sheets to deform under stress to generate voltage, and the voltage is acquired by the measuring assembly.
9. The sensor element of claim 1, wherein: the heat-sensitive microcapsule is a nano and/or micron-scale solid microparticle with a capsule structure; the temperature-sensing shell adopts a single-layer, multi-layer or composite structure, and the components of the temperature-sensing shell are organic materials, inorganic materials, composite materials and/or high polymer materials and composites thereof, so that the temperature-sensing shell has stable mechanical properties and structure; the protective substance comprises a functional protective substance and a phase change driving substance, the functional protective substance comprises but is not limited to a fire extinguishing substance, a cooling substance and/or a flame retardant substance, and the phase change driving substance is a substance which is subjected to phase change under the action of heat and is easy to vaporize so as to drive the functional protective substance to be sprayed out together; the sensing unit includes, but is not limited to, a sensing component formed by molding, casting, winding and/or coating the heat-sensitive microcapsules, has different shapes, sizes and capacities according to different space limitations, functional requirements and engineering designs, and is installed and integrated by means of adhesion, coating, mechanical parts and/or encapsulation.
10. An intelligent sensor/node, characterized by: the sensor comprises the sensor element as claimed in any one of claims 1 to 9, and further comprises a microprocessor and a communication module, wherein the microprocessor is connected with an output end of a measuring component in the sensor element and establishes communication connection with a receiving terminal or a back-end server through the communication module, the microprocessor further analyzes and processes signals output by the measuring component, compares and judges the signals with a preset early warning threshold value, sends a judgment result to the receiving terminal or the back-end server through the communication module, and the receiving terminal or the back-end server sends a control command or executes corresponding operation according to the received judgment result.
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| CN202111554687.XA CN114136472A (en) | 2021-12-18 | 2021-12-18 | Sensing element and intelligent sensor/node |
| PCT/CN2022/133653 WO2023109444A1 (en) | 2021-12-18 | 2022-11-23 | Sensing element and smart sensor/node |
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| WO2023109444A1 (en) * | 2021-12-18 | 2023-06-22 | 金旭 | Sensing element and smart sensor/node |
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2021
- 2021-12-18 CN CN202111554687.XA patent/CN114136472A/en active Pending
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2022
- 2022-11-23 WO PCT/CN2022/133653 patent/WO2023109444A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023109444A1 (en) * | 2021-12-18 | 2023-06-22 | 金旭 | Sensing element and smart sensor/node |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023109444A1 (en) | 2023-06-22 |
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