CN112268984A - Intelligent crack detection system - Google Patents
Intelligent crack detection system Download PDFInfo
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- CN112268984A CN112268984A CN202011095052.3A CN202011095052A CN112268984A CN 112268984 A CN112268984 A CN 112268984A CN 202011095052 A CN202011095052 A CN 202011095052A CN 112268984 A CN112268984 A CN 112268984A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
Abstract
The invention provides an intelligent crack detection system, which comprises: the system comprises a processor and N intelligent sensors, wherein the processor is connected with each intelligent sensor by adopting a two-wire system; when each intelligent sensor monitors that the address data sent by the processor is equal to the ID corresponding to each sensor in the intelligent sensor, the electric signals corresponding to each sensor matched with the address data are uploaded to an upper computer through the processor in a carrier communication mode, so that the upper computer calculates the deformation size and the crack width of the detected part according to the electric signals; and when the processor receives the electric signals sent by the intelligent sensors, the processor sends a stop instruction to the intelligent sensors so that the intelligent sensors sending data stop sending the electric signals according to the stop instruction. The processor and each intelligent sensor are connected by adopting a two-wire system, so that the number of connecting wires and the weight of the detector are reduced, and the problem of increased fault points caused by more connecting wires is solved.
Description
Technical Field
The invention relates to the technical field of crack detection, in particular to an intelligent crack detection system.
Background
At present, an existing crack detection system comprises a processor, each processor can carry 8 collectors at most, each collector can carry 8 sensors at most, the collectors are connected with the processor through a four-wire system, and the sensors are connected with the collectors through a three-wire system. The existing crack detection system is firstly connected with a first collector, a power line of the first collector is connected with a power supply, a sensor converts the surface deformation of a detected object until a crack is generated into an electric signal and sends the electric signal to the collector, and a digital signal obtained by A/D conversion of the collector is sent to a processor. And after receiving the signals sent by the collector, the processor stores and alarms the data meeting the requirements according to the system parameter setting range. And then the first collector is switched on, and the first collector starts to work according to the working mode of the first collector. And the like, the operation is circulated until 8 collectors work in a circulating way, and then the circulation operation is started from the first one and then the first circulation access is carried out. However, the above-mentioned crack detection system has the following disadvantages: 1) the signals collected by the existing sensors are analog signals, the analog signals are unstable, the anti-interference capability is not strong, and data distortion is caused by the temperature drift phenomenon. 2) The processor and each collector in the existing crack detection system adopt a special line communication mode and are connected by 4 wires, if one processor is provided with 8 collectors, 32 wires are led out from the processor, so that the output lines of the processor are too many, communication channel lines are increased, and the structural complexity, the volume and the fault probability are increased. 3) In the existing crack detection system, the collector and the sensor are connected by 3 lines, so that the number of the lines is increased, and the volume, the weight and the fault probability are increased.
Disclosure of Invention
Based on this, the invention aims to provide an intelligent crack detection system to reduce the number of connecting wires and further reduce the overall weight and the probability of failure.
To achieve the above object, the present invention provides an intelligent crack detection system, comprising:
the system comprises a processor and N intelligent sensors, wherein N is a positive integer greater than or equal to 1; the processor is connected with each intelligent sensor by adopting a two-wire system; the processor is connected with the upper computer;
the upper computer is used for sending working parameters to the processor; the working parameters comprise a starting instruction, an alarm threshold value, a storage threshold value and address data;
each intelligent sensor is used for detecting the deformation and crack information of the detected part and generating an electric signal;
the processor is used for sending the starting instruction to each intelligent sensor so that each intelligent sensor is ready to start monitoring according to the starting instruction; the processor is also used for sending the address data sent by the upper computer to each intelligent sensor;
when each intelligent sensor monitors address data sent by the processor, each intelligent sensor judges whether the address data is equal to the ID corresponding to each sensor in the intelligent sensor; if the address data is equal to the ID corresponding to each sensor in the intelligent sensor, uploading the electric signals corresponding to each sensor matched with the address data to the upper computer through the processor in a carrier communication mode;
when the processor receives the electric signals sent by the intelligent sensors, a stop instruction is sent to the intelligent sensors, so that the intelligent sensors sending data stop sending the electric signals according to the stop instruction;
the processor is further configured to determine whether the electrical signal is greater than or equal to a stored threshold; if the electrical signal is greater than or equal to a storage threshold, the processor stores the electrical signal; the processor is further configured to determine whether the electrical signal is greater than or equal to an alarm threshold; the processor generates an alarm message if the electrical signal is greater than or equal to an alarm threshold.
Optionally, the processor comprises:
the first communication unit is connected with each intelligent sensor and used for receiving the electric signals transmitted by each intelligent sensor; the first communication unit is further used for sending a starting instruction and address data to each intelligent sensor;
the second communication unit is connected with the upper computer and used for receiving the working parameters sent by the upper computer; the second communication unit is also used for sending an electric signal to the upper computer;
a storage unit for storing the electrical signal;
the first central processing unit is respectively connected with the first communication unit, the storage unit and the second communication unit and is used for receiving the electric signals transmitted by the first communication unit and the working parameters sent by the second communication unit;
the first central processing unit is used for sending the starting instruction to each intelligent sensor through the first communication unit so that each intelligent sensor is ready to start monitoring according to the starting instruction; the first central processing unit is also used for sending address data to each intelligent sensor through the first communication unit;
when the first central processing unit receives an electric signal, a stop instruction is sent to each intelligent sensor through the first communication unit, so that the intelligent sensor sending data stops sending the electric signal according to the stop instruction;
the first central processing unit is also used for judging whether the electric signal is greater than or equal to a storage threshold value; if the electric signal is larger than or equal to a storage threshold value, the first central processing unit sends the electric signal to a storage unit for storage; the first central processing unit is also used for judging whether the electric signal is greater than or equal to an alarm threshold value; and if the electric signal is greater than or equal to an alarm threshold value, the first central processing unit generates alarm information and sends the alarm information to the upper computer through the second communication unit.
Optionally, the processor further comprises:
and the clock unit is connected with the first central processing unit and used for providing a clock signal.
Optionally, the processor further comprises:
and the self-power supply unit is connected with the clock unit and used for providing electric energy for the clock unit.
Optionally, the processor further comprises:
and the first power supply unit is respectively connected with the storage unit, the first central processing unit and the first communication unit and is used for supplying electric energy to the storage unit, the first central processing unit and the first communication unit.
Optionally, the first communication unit is a 485 communication unit, and the second communication unit is a USB communication unit.
Optionally, each of the smart sensors comprises:
the sensors are used for detecting the deformation and crack information of the detected part and converting the deformation and crack information of the detected part into original electric signals;
the multi-path selection unit is connected with each sensor and used for selectively uploading original electric signals sent by different sensors;
the signal acquisition unit is connected with the multi-path selection unit and is used for carrying out noise reduction, smoothing and filtering processing on the uploaded original electric signals to obtain electric signals;
the second central processing unit is connected with the signal acquisition unit and used for receiving the electric signal sent by the signal acquisition unit;
and the third communication unit is respectively connected with the second central processing unit and the processor and is used for sending the electric signals to the processor.
Optionally, each of the smart sensors further comprises:
and the second power supply unit is respectively connected with the third communication unit, the second central processing unit and the multi-path selection unit and is used for supplying electric energy to the third communication unit, the second central processing unit and the multi-path selection unit.
Optionally, the sensor comprises:
the protective layer, the information acquisition layer and the information driving layer are arranged in sequence; the protective layer is made of a polyimide film or a metal material, the information driving layer is made of a polyimide film, and the information acquisition layer is made of silver powder.
Optionally, the model of the storage unit is N25Q265a13ESF40E, the model of the clock unit is PFCF8563, the model of the first communication unit is MAX3485, the model of the second communication unit is TSP79333, and the model of the first power supply unit is WRB 2405S-3W.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides an intelligent crack detection system, which comprises: the system comprises a processor and N intelligent sensors, wherein the processor is connected with each intelligent sensor by adopting a two-wire system; when each intelligent sensor monitors that the address data sent by the processor is equal to the ID corresponding to each sensor in the intelligent sensor, the electric signals corresponding to each sensor matched with the address data are uploaded to an upper computer through the processor in a carrier communication mode, so that the upper computer calculates the deformation size and the crack width of the detected part according to the electric signals; and when the processor receives the electric signals sent by the intelligent sensors, the processor sends a stop instruction to the intelligent sensors so that the intelligent sensors sending data stop sending the electric signals according to the stop instruction. The processor and each intelligent sensor are connected by adopting a two-wire system, so that the number of connecting wires and the weight of the detector are reduced, and the problem of increased fault points caused by more connecting wires is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be 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 to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an intelligent crack detection system according to an embodiment of the invention;
FIG. 2 is a block diagram of a processor according to an embodiment of the present invention;
FIG. 3 is a block diagram of an embodiment of the smart sensor of the present invention;
FIG. 4 is a diagram of a sensor structure according to an embodiment of the present invention;
1. the intelligent wireless communication system comprises a processor 11, a first central processing unit, 12, a first communication unit, 13, a second communication unit, 14, a storage unit, 15, a clock unit, 16, a self-power supply unit, 17, a first power supply unit, 2, an intelligent sensor, 21, a second central processing unit, 22, a signal acquisition unit, 23, a third communication unit, 24, a multi-path selection unit, 25, a second power supply unit, 26 and a sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an intelligent crack detector to reduce the number of connecting wires and further reduce the overall weight and the probability of failure.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The existing crack detection system has the detection principle that a sensor is pasted to a detected part, when the detected part deforms, the sensor outputs an electric signal, and the deformation size and the crack width of the detected part are calculated according to the size of the electric signal.
As shown in fig. 1, the present invention provides an intelligent crack detection system, comprising: the system comprises a processor 1 and N intelligent sensors 2, wherein N is a positive integer greater than or equal to 1; the processor 1 is connected with each intelligent sensor 2 by adopting a two-wire system; the processor 1 is connected with an upper computer; the upper computer is used for sending working parameters to the processor 1; the working parameters comprise a starting instruction, an alarm threshold value, a storage threshold value and address data; each intelligent sensor 2 is used for detecting the deformation and crack information of the detected part and generating an electric signal; the processor 1 is configured to send the start instruction to each of the smart sensors 2, so that each of the smart sensors 2 prepares to start monitoring according to the start instruction; the processor 1 is further configured to send address data sent by the upper computer to each of the intelligent sensors 2.
When each intelligent sensor 2 monitors the address data sent by the processor 1, judging whether the address data is equal to the ID corresponding to each sensor 26 in the intelligent sensor 2; if the address data is equal to the ID corresponding to each sensor 26 in the intelligent sensor 2, uploading an electric signal corresponding to each sensor 26 matched with the address data to the upper computer through the processor 1 in a carrier communication mode, so that the upper computer calculates the deformation size and the crack width of the detected part according to the electric signal; when the processor 1 receives the electric signals sent by each intelligent sensor 2, sending a stop instruction to each intelligent sensor 2, so that the intelligent sensor 2 sending data stops sending the electric signals according to the stop instruction; the processor 1 is further configured to determine whether the electrical signal is greater than or equal to a stored threshold; if the electrical signal is greater than or equal to a storage threshold, the processor 1 stores the electrical signal; the processor 1 is further configured to determine whether the electrical signal is greater than or equal to an alarm threshold; if the electrical signal is greater than or equal to an alarm threshold, the processor 1 generates an alarm message.
As shown in fig. 2, the processor 1 of the present invention includes: a first communication unit 12, a second communication unit 13, a storage unit 14, and a first central processing unit 11; the first communication unit 12 is connected to each of the smart sensors 2, the second communication unit 13 is connected to the upper computer, and the first central processing unit 11 is connected to the first communication unit 12, the storage unit 14, and the second communication unit 13, respectively.
The first communication unit 12 is used for receiving the electric signals transmitted by each intelligent sensor 2; the first communication unit 12 is further configured to send a start instruction and address data to each of the smart sensors 2; the second communication unit 13 is configured to receive the working parameters sent by the upper computer; the storage unit 14 is used for storing the electric signals; the first central processing unit 11 is configured to receive the electrical signal transmitted by the first communication unit 12 and the operating parameter sent by the second communication unit 13.
The first central processing unit 11 is further configured to send the start instruction to the third communication unit 23 in each of the smart sensors 2 through the first communication unit 12, so that the second central processing unit 21 in each of the smart sensors 2 is prepared to start monitoring according to the start instruction; the first central processing unit 11 is further configured to send address data to the third communication unit 23 in each of the intelligent sensors 2 through the first communication unit 12; when the second central processing unit 21 in each of the intelligent sensors 2 monitors address data, determining whether the address data is equal to the ID corresponding to each of the sensors 26 in the intelligent sensors 2; if the address data is equal to the ID corresponding to each sensor 26 in the smart sensor 2, sending the electrical signal corresponding to each sensor 26 matching the address data to the first central processing unit 11 through the first communication unit 12 by means of carrier communication; when the first central processing unit 11 receives an electric signal, a stop instruction is sent to the third communication unit 23 in each intelligent sensor 2 through the first communication unit 12, so that the second central processing unit 21 in the intelligent sensor 2 sending data stops sending the electric signal according to the stop instruction; the first central processing unit 11 is further configured to determine whether the electrical signal is greater than or equal to a storage threshold; if the electrical signal is greater than or equal to a storage threshold, the first central processing unit 11 sends the electrical signal to a storage unit 14 for storage; the first central processing unit 11 is further configured to determine whether the electrical signal is greater than or equal to an alarm threshold; if the electric signal is larger than or equal to an alarm threshold value, the first central processing unit 11 generates alarm information and sends the alarm information to the upper computer through the second communication unit 13.
As shown in fig. 2, the processor 1 of the present invention further includes: a clock unit 15, a self-powered unit 16 and a first power supply unit 17; the clock unit 15 is connected to the first central processing unit 11, and the self-powered unit 16 is connected to the clock unit 15; the first power supply unit 17 is connected to the storage unit 14, the first central processing unit 11, and the first communication unit 12, respectively; the clock unit 15 is used for providing a clock signal; the self-powered unit 16 is used to supply power to the clock unit 15. The first power supply unit 17 is used for supplying electric energy to the storage unit 14, the first central processing unit 11 and the first communication unit 12.
In one embodiment, the first communication unit 12 is a 485 communication unit, and the second communication unit 13 is a USB communication unit. The model of the storage unit 14 is N25Q265a13ESF40E, the model of the clock unit 15 is PFCF8563, the model of the first communication unit 12 is MAX3485, the model of the second communication unit 13 is TSP79333, and the model of the first power supply unit 17 is WRB 2405S-3W.
As shown in fig. 3, each of the smart sensors 2 of the present invention includes: a plurality of sensors 26, a multiplexing unit 24, a signal acquisition unit 22, a second central processing unit 21, and a third communication unit 23; the multiple-way selection unit 24 is connected to each of the sensors 26, the signal acquisition unit 22 is connected to the multiple-way selection unit 24, the second central processing unit 21 is connected to the signal acquisition unit 22, and the third communication unit 23 is connected to the second central processing unit 21 and the processor 1.
The sensors 26 are used for detecting the deformation and crack information of the detected part and converting the deformation and crack information of the detected part into original electric signals; the multi-channel selection unit 24 is used for selectively uploading original electric signals sent by different sensors 26; the signal acquisition unit 22 is configured to perform noise reduction, smoothing and filtering processing on the uploaded original electrical signal to obtain an electrical signal.
The second central processing unit 21 is configured to receive the electrical signal sent by the signal acquisition unit 22; the second central processing unit 21 is further configured to prepare to start listening according to the start instruction; when the second central processing unit 21 monitors the address data, it is determined whether the address data is equal to the ID corresponding to each sensor 26; if the address data is equal to the ID corresponding to each sensor 26, sending an electrical signal matching the address data to the third communication unit 23 by means of carrier communication; the second central processing unit 21 is further configured to stop sending the electrical signal according to the stop instruction.
A third communication unit 23, connected to the second central processing unit 21 and the processor 1, respectively, for sending an electrical signal to the processor 1; the third communication unit 23 is further configured to receive a start instruction, a stop instruction, and address data sent by the processor 1, and send the start instruction, the stop instruction, and the address data to the second central processing unit 21.
As shown in fig. 3, each of the smart sensors 2 of the present invention further includes: and a second power supply unit 25, connected to the third communication unit 23, the second central processing unit 21 and the multiplexing unit 24, respectively, for supplying electric energy to the third communication unit 23, the second central processing unit 21 and the multiplexing unit 24.
The model of the second power supply unit 25 is WRB0509S-3W, the model of the third communication unit 23 is MAX3485, the model of the second central processing unit 21 is STM32F103, the model of the multi-path selection unit 24 is ADG708, and the model of the signal acquisition unit 22 is OP 2335.
As shown in fig. 4, the sensor 26 includes: the protective layer, the information acquisition layer and the information driving layer are arranged in sequence; the protective layer is made of a polyimide film or a metal material, the information driving layer is made of a polyimide film, and the information acquisition layer is made of silver powder.
If 8 collectors are connected to each collector at the same time and 8 sensors 26 are connected to each collector, 16 communication lines and 24 signal acquisition lines are required to be used in the existing crack detection system. A total of 40 lines, which limits the number of collectors that can be accessed. In the invention, the sensor 26 and the signal acquisition and processing unit are integrated together to be used as the intelligent sensor 2, and the intelligent sensor can be realized by only using 2 communication lines, so that the connecting lines between the acquisition device and the sensor 26 are reduced compared with the traditional connecting mode.
In addition, 128 intelligent sensors 2 can be accessed to one processor 1 of the invention at most, and each intelligent sensor 2 can be connected with 8 sensors 26, while the traditional processor 1 is connected with 8 collectors at most simultaneously, and each collector is connected with 8 sensors 26 at most, obviously, the scheme provided by the invention increases the detection area.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. An intelligent crack detection system, the system comprising:
the system comprises a processor and N intelligent sensors, wherein N is a positive integer greater than or equal to 1; the processor is connected with each intelligent sensor by adopting a two-wire system; the processor is connected with the upper computer;
the upper computer is used for sending working parameters to the processor; the working parameters comprise a starting instruction, an alarm threshold value, a storage threshold value and address data;
each intelligent sensor is used for detecting the deformation and crack information of the detected part and generating an electric signal;
the processor is used for sending the starting instruction to each intelligent sensor so that each intelligent sensor is ready to start monitoring according to the starting instruction; the processor is also used for sending the address data sent by the upper computer to each intelligent sensor;
when each intelligent sensor monitors address data sent by the processor, each intelligent sensor judges whether the address data is equal to the ID corresponding to each sensor in the intelligent sensor; if the address data is equal to the ID corresponding to each sensor in the intelligent sensor, uploading the electric signals corresponding to each sensor matched with the address data to the upper computer through the processor in a carrier communication mode;
when the processor receives the electric signals sent by the intelligent sensors, a stop instruction is sent to the intelligent sensors, so that the intelligent sensors sending data stop sending the electric signals according to the stop instruction;
the processor is further configured to determine whether the electrical signal is greater than or equal to a stored threshold; if the electrical signal is greater than or equal to a storage threshold, the processor stores the electrical signal; the processor is further configured to determine whether the electrical signal is greater than or equal to an alarm threshold; the processor generates an alarm message if the electrical signal is greater than or equal to an alarm threshold.
2. The intelligent crack detection system of claim 1, wherein the processor comprises:
the first communication unit is connected with each intelligent sensor and used for receiving the electric signals transmitted by each intelligent sensor; the first communication unit is further used for sending a starting instruction and address data to each intelligent sensor;
the second communication unit is connected with the upper computer and used for receiving the working parameters sent by the upper computer; the second communication unit is also used for sending an electric signal to the upper computer;
a storage unit for storing the electrical signal;
the first central processing unit is respectively connected with the first communication unit, the storage unit and the second communication unit and is used for receiving the electric signals transmitted by the first communication unit and the working parameters sent by the second communication unit;
the first central processing unit is used for sending the starting instruction to each intelligent sensor through the first communication unit so that each intelligent sensor is ready to start monitoring according to the starting instruction; the first central processing unit is also used for sending address data to each intelligent sensor through the first communication unit;
when the first central processing unit receives an electric signal, a stop instruction is sent to each intelligent sensor through the first communication unit, so that the intelligent sensor sending data stops sending the electric signal according to the stop instruction;
the first central processing unit is also used for judging whether the electric signal is greater than or equal to a storage threshold value; if the electric signal is larger than or equal to a storage threshold value, the first central processing unit sends the electric signal to a storage unit for storage; the first central processing unit is also used for judging whether the electric signal is greater than or equal to an alarm threshold value; and if the electric signal is greater than or equal to an alarm threshold value, the first central processing unit generates alarm information and sends the alarm information to the upper computer through the second communication unit.
3. The intelligent crack detection system of claim 2 wherein the processor further comprises:
and the clock unit is connected with the first central processing unit and used for providing a clock signal.
4. The intelligent crack detection system of claim 3 wherein the processor further comprises:
and the self-power supply unit is connected with the clock unit and used for providing electric energy for the clock unit.
5. The intelligent crack detection system of claim 3 wherein the processor further comprises:
and the first power supply unit is respectively connected with the storage unit, the first central processing unit and the first communication unit and is used for supplying electric energy to the storage unit, the first central processing unit and the first communication unit.
6. The intelligent crack detection system of claim 2 wherein the first communication unit is a 485 communication unit and the second communication unit is a USB communication unit.
7. The intelligent crack detection system of claim 1, wherein each of the intelligent sensors comprises:
the sensors are used for detecting the deformation and crack information of the detected part and converting the deformation and crack information of the detected part into original electric signals;
the multi-path selection unit is connected with each sensor and used for selectively uploading original electric signals sent by different sensors;
the signal acquisition unit is connected with the multi-path selection unit and is used for carrying out noise reduction, smoothing and filtering processing on the uploaded original electric signals to obtain electric signals;
the second central processing unit is connected with the signal acquisition unit and used for receiving the electric signal sent by the signal acquisition unit;
and the third communication unit is respectively connected with the second central processing unit and the processor and is used for sending the electric signals to the processor.
8. The intelligent crack detection system of claim 7 wherein each of the intelligent sensors further comprises:
and the second power supply unit is respectively connected with the third communication unit, the second central processing unit and the multi-path selection unit and is used for supplying electric energy to the third communication unit, the second central processing unit and the multi-path selection unit.
9. The intelligent crack detection system of claim 7, wherein the sensor comprises:
the protective layer, the information acquisition layer and the information driving layer are arranged in sequence; the protective layer is made of a polyimide film or a metal material, the information driving layer is made of a polyimide film, and the information acquisition layer is made of silver powder.
10. The intelligent crack detection system of claim 5, wherein the storage unit is of a type N25Q265a13ESF40E, the clock unit is of a type PFCF8563, the first communication unit is of a type MAX3485, the second communication unit is of a type TSP79333, and the first power supply unit is of a type WRB 2405S-3W.
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| CN114777894A (en) * | 2022-04-06 | 2022-07-22 | 深圳市凌阳电子有限公司 | Human body scale based on two-wire system |
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| CN110766928A (en) * | 2019-10-22 | 2020-02-07 | 山东思科赛德矿业安全工程有限公司 | Mine intelligent sensor data acquisition method based on Internet of things |
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