CN110987253A - Force cell sensor monitoring system based on ZigBee wireless network technology - Google Patents
Force cell sensor monitoring system based on ZigBee wireless network technology Download PDFInfo
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- CN110987253A CN110987253A CN201911330442.1A CN201911330442A CN110987253A CN 110987253 A CN110987253 A CN 110987253A CN 201911330442 A CN201911330442 A CN 201911330442A CN 110987253 A CN110987253 A CN 110987253A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
- G01L1/2218—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports the supports being of the column type, e.g. cylindric, adapted for measuring a force along a single direction
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/225—Measuring circuits therefor
- G01L1/2262—Measuring circuits therefor involving simple electrical bridges
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a force transducer monitoring system based on a ZigBee wireless network technology, which comprises a terminal node module, a coordinator module and an upper computer processing module, wherein the terminal node module is connected with the coordinator module; the terminal node module also comprises a force-sensitive elastomer, a strain gauge bridge circuit, a filtering amplification circuit, an ADC (analog to digital converter) conversion module, an MCU (microprogrammed control unit) main control module, a ZigBee wireless transparent transmission module, a power supply module and an external key; the power supply module is connected with the ADC conversion module, the MCU main control module and the ZigBee wireless transparent transmission module; the coordinator module also comprises a coordinator and a USB module; the upper computer processing module also comprises data acquisition monitoring software and a database. The force measuring sensor monitoring system based on the ZigBee wireless network technology has the advantages of low power consumption, ad hoc network, low cost, low speed and strong anti-interference performance, thereby effectively solving the problems in the prior art.
Description
Technical Field
The invention relates to the technical field of a force transducer detection system, in particular to a force transducer monitoring system based on a ZigBee wireless network technology.
Background
Force value measurement is commonly applied in engineering detection, according to an actual application scene, tension and pressure sensors are distributed at different positions of an engineering site, such as offshore measurement, high-altitude measurement, dangerous member measurement, narrow space measurement and the like, the force measurement sensors are basically in wired transmission, the distance is long, power supply is difficult, wiring is time-consuming and labor-consuming in multi-sensor measurement, the working mode is poor in flexibility, limitation is caused, and the problem can be solved in a wireless transmission mode.
The working principle of most of force sensors is based on the Wheatstone bridge method to measure the change of an electric signal of a strain gauge caused by stress, and then the phase stress value can be obtained through conversion and calibration. The electric signal of the strain gauge is sent to an upper computer for processing in a wireless transmission mode, and force value monitoring can be achieved. At present, several common wireless transmission modes include a LoRa wireless technology, a wifi wireless technology, a bluetooth transmission technology and a ZigBee wireless technology, the LoRa wireless technology is suitable for long-distance signal transmission, and a multi-node transmission mode adopts a star network topology structure, needs to be provided with a base station and has poor reliability; the wifi wireless technology is suitable for short-distance transmission, but the power consumption is high, and multi-node transmission can affect the route stability; and the Bluetooth technology has short communication distance, cannot carry out multi-point transmission and has long reaction time. The technologies are applied to the force measuring sensor, and the applicability and the limitation are large.
Disclosure of Invention
The invention aims to provide a force transducer monitoring system based on a ZigBee wireless network technology, which has the advantages of low power consumption, ad hoc network, low cost, low speed and strong anti-interference performance and can solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the force transducer monitoring system based on the ZigBee wireless network technology comprises a terminal node module, a coordinator module and an upper computer processing module, wherein the terminal node module is connected with the coordinator module; the terminal node module further comprises a force-sensitive elastic body, a strain gauge bridge circuit, a filtering amplification circuit, an ADC (analog-to-digital converter) conversion module, an MCU (microprogrammed control unit) main control module, a ZigBee wireless transparent transmission module, a power module and an external key, wherein the strain gauge bridge circuit is arranged in the force-sensitive elastic body and connected to the filtering amplification circuit, the filtering amplification circuit is connected to the ADC conversion module, the ADC conversion module is connected to the MCU main control module, the MCU main control module is connected to the ZigBee wireless transparent transmission module, the ZigBee wireless transparent transmission module is connected to the external key, the external key is connected to the power module, and the power module is connected to the ADC conversion module, the MCU main control module and the ZigBee wireless; the coordinator module also comprises a coordinator and a USB module; the upper computer processing module also comprises data acquisition monitoring software and a database.
Preferably, the ADC conversion module is composed of an a/D converter chip U1 and a voltage regulation chip U2, wherein a pin 1 of the voltage regulation chip U2 is connected to the positive electrode of the Battery, a pin 3 of the voltage regulation chip U2 is connected to a pin 1 of the a/D converter chip U1 after being connected in series to an inductor L1, a pin 3 of the a/D converter chip U1 is connected to a pin 1 of the interface P1, a pin 6 of the a/D converter chip U1 is connected in series to a capacitor C4 and a capacitor C6, and is connected to a pin 3 circuit interface of the a/D converter chip U1, a pin 7 of the a/D converter chip U1 is connected in series to a resistor R9 and is connected to a pin 3 of the interface P1, and a pin 8 of the a pin resistor R10 of the a/D converter chip U1 is connected to a pin 4 of the interface P1.
Preferably, the MCU main control module is composed of a main control chip U3, wherein 4 pins of the main control chip U3 are connected to a circuit interface of a resistor R1 and a resistor R2 which are connected in series, two electrodes of the resistor R1 and the resistor R2 which are connected in series are respectively connected to a positive electrode and a negative electrode of a Battery, 5 pins of the main control chip U3 are connected to 15 pins of an a/D converter chip U1, and 8 pins and 9 pins of the main control chip U3 are respectively connected to 12 pins and 11 pins of an a/D converter chip U1.
Preferably, the ZigBee wireless transparent transmission module is composed of a chip U4, pins 3 and 4 of the chip U4 are respectively connected to pins 7 and 6 of the main control chip U3, and pins 5 and 6 of the chip U4 are respectively connected to pins 10 and 11 of the main control chip U3.
Preferably, the coordinator is composed of a chip U5, a pin 1 of the chip U5 is connected to VCC3.3V, pins 3 and 4 of the chip U5 are connected to a switch K1 and a switch K2, respectively, and pins 7 and 8 of the chip U5 are connected to an LED lamp D1 and an LED lamp D2, respectively.
Preferably, the USB module is composed of a USB interface J1, a voltage regulator chip U6 and a USB serial chip U7, a pin 1 of the USB interface J1 is connected to a pin 3 of the voltage regulator chip U6, pins 2 and 3 of the USB interface J1 are connected to a pin 6 and a pin 5 of the USB serial chip U7, a pin 2 of the voltage regulator chip U6 outputs VCC3.3V voltage, pins 2 and 3 of the USB serial chip U7 are connected to a pin 5 and a pin 6 of the chip U5, and pins 4 and pin 16 of the USB serial chip U7 are connected to the voltage VCC3.3V.
Compared with the prior art, the invention has the following beneficial effects:
1. the force measuring sensor monitoring system based on the ZigBee wireless network technology can be provided with a plurality of force measuring sensor terminal node sensors, automatic routing and dynamic maintenance routing can be realized based on the terminal node modules, the terminal node sensors have automatic networking and network self-healing functions in a network, one node is added or deleted, or the node breaks down and the like, the network can be self-repaired, corresponding adjustment is carried out on a network topological structure, manual intervention is not needed, the stable work of the whole system is ensured, a plurality of measuring points can be arranged in the space of a plurality of obstacles, and the stability of wireless transmission is not influenced.
2. According to the force measuring sensor monitoring system based on the ZigBee wireless network technology, a ZigBee wireless transparent transmission module is adopted to transmit signals, power consumption is low, a lithium battery pack is used for supplying power, the mounting mode is flexible, the use is flexible, and the terminal node module can be mounted in places with limited wiring and limited working conditions.
3. This force cell sensor monitoring system based on zigBee wireless network technique adopts zigBee wireless network protocol, and this kind of communication protocol is fit for the force cell sensor data acquisition of short distance, time delay weak point, low data rate, compares wifi, bluetooth, lora technique, and suitability and reliability are better.
4. According to the force measuring sensor monitoring system based on the ZigBee wireless network technology, the wireless force measuring sensors are simple in arrangement, calibration data are stored in the terminal node module, and remote control can be carried out. After the installation is finished, parameters such as calibration data and a sleep mode of the ZigBee force transducer terminal node can be set through the upper computer, the remote electric quantity checking function is achieved, and the battery is replaced according to a service condition plan.
Drawings
FIG. 1 is a block diagram of a wireless load cell monitoring system of the present invention;
FIG. 2 is a block diagram of a wireless sensor terminal node of the present invention;
FIG. 3 is a circuit diagram of an ADC conversion module according to the present invention;
FIG. 4 is a circuit diagram of the MCU master control module of the present invention;
FIG. 5 is a circuit diagram of a ZigBee wireless transparent transmission module of the present invention;
FIG. 6 is a circuit diagram of a coordinator module according to the present invention;
FIG. 7 is a circuit diagram of a USB module according to the present invention.
In the figure: 1. a terminal node module; 11. a force sensitive elastomer; 12. a strain gage bridge circuit; 13. a filter amplifier circuit; 14. an ADC conversion module; 15. the MCU master control module; 16. a ZigBee wireless transparent transmission module; 17 a power supply module; 18. a peripheral key; 2. a coordinator module; 21. a coordinator; 22. a USB module; 3. an upper computer processing module; 31. data acquisition monitoring software; 32. a database.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
Referring to fig. 1-2, the force sensor monitoring system based on the ZigBee wireless network technology includes a terminal node module 1, a coordinator module 2, and an upper computer processing module 3, wherein the terminal node module 1 is connected to the coordinator module 2, and the coordinator module 2 is connected to the upper computer processing module 3; the terminal node module 1 further comprises a force-sensitive elastomer 11, a strain gauge bridge circuit 12, a filtering amplification circuit 13, an ADC conversion module 14, an MCU main control module 15, a ZigBee wireless transparent transmission module 16, a power supply module 17 and an external key 18, wherein the strain gauge bridge circuit 12 is arranged in the force-sensitive elastomer 11 and connected to the filtering amplification circuit 13, the filtering amplification circuit 13 is connected to the ADC conversion module 14, the ADC conversion module 14 is connected to the MCU main control module 15, the MCU main control module 15 is connected to the ZigBee wireless transparent transmission module 16, the ZigBee wireless transparent transmission module 16 is connected to the external key 18, the external key 18 is connected to the power supply module 17, and the power supply module 17 is connected to the ADC conversion module 14, the MCU main control module 15 and the ZigBee wireless transparent transmission module 16; the coordinator module 2 further includes a coordinator 21 and a USB module 22; the upper computer processing module 3 further comprises data acquisition monitoring software 31 and a database 32.
Because the force-sensitive elastomer 11 has a cylindrical shape, an S shape, a pin shaft type, a double-arm balance beam type and the like, according to the shapes of different elastomers, the strain gauge is pasted on the force-sensitive elastomer, so that a full-bridge circuit with temperature compensation is formed, when the elastomer is stressed and deformed, the strain gauge generates strain and is converted into resistance value change, so that the voltage change of a measuring circuit is caused, the voltage value of the measuring circuit is converted into a digital signal through ADC analog-to-digital conversion, and wireless data is sent through the ZigBee wireless transparent transmission module 16.
Referring to fig. 3, the ADC conversion module 14 is composed of an a/D converter chip U1 and a voltage stabilization chip U2, wherein a pin 1 of the voltage stabilization chip U2 is connected to the positive electrode of the Battery, a pin 3 of the voltage stabilization chip U2 is connected to a pin 1 of the a/D converter chip U1 after being connected in series to an inductor L1, a pin 3 of the a/D converter chip U1 is connected to a pin 1 of the interface P1, a pin 6 of the a/D converter chip U1 is connected to a pin C4 and a capacitor C6 and is connected to a pin 3 circuit interface of the a/D converter chip U1, a pin 7 of the a/D converter chip U1 is connected to a pin 3 of the interface P1 after being connected to a pin R9, and a pin 8 of the a/D converter chip U1 is connected to a pin 4 of the interface P1 after being connected to the resistor R10.
The high-precision HX711 chip is used as an A/D converter chip U1 to collect analog signals of a bridge circuit of the transformer, peripheral circuits required by other chips of the same type, such as a stabilized voltage supply and an on-chip clock oscillator, are integrated on the chip, and the high-precision HX711 chip has the advantages of high integration level, high response speed, high anti-interference performance and the like, the stabilized voltage supply provided in the chip can directly provide power for the external bridge type strain circuit and the A/D converter in the chip, the working voltage range is 2.6-5.5 v, and power can be supplied through the power module 17.
Referring to fig. 4, the MCU main control module 15 is composed of a main control chip U3, wherein a pin 4 of the main control chip U3 is connected to a circuit interface of a resistor R1 and a resistor R2 connected in series, two electrodes of the resistor R1 and the resistor R2 connected in series are respectively connected to a positive electrode and a negative electrode of a Battery, a pin 5 of the main control chip U3 is connected to a pin 15 of an a/D converter chip U1, and pins 8 and 9 of the main control chip U3 are respectively connected to a pin 12 and a pin 11 of an a/D converter chip U1.
An STM32 single chip microcomputer is used as a main control chip U3, serial data output by the ADC conversion module 14 are received, acquired force value data are converted through force sensor calibration data stored by the control unit and are converted into serial port data packets for wireless transmission, and the serial port data packets are sent to the coordinator 21 through the ZigBee wireless transparent transmission module 16. According to the wireless setting instruction sent by the upper computer processing module 3, the working mode of the ZigBee wireless transparent transmission module 16 can be set in a one-to-many or one-to-one mode, and each terminal module is not required to be set by using a PC and a data line.
Referring to fig. 5, the ZigBee wireless transparent module 16 is composed of a chip U4, pins 3 and 4 of the chip U4 are respectively connected to pins 7 and 6 of the main control chip U3, and pins 5 and 6 of the chip U4 are respectively connected to pins 10 and 11 of the main control chip U3.
By adopting a DRF1609H type chip U4, the routing can be maintained dynamically, the number of routing levels is large, the network expansibility is strong, and the processing speed is higher.
Referring to fig. 6, the coordinator 21 is composed of a chip U5, a pin 1 of the chip U5 is connected to VCC3.3V, pins 3 and 4 of the chip U5 are connected to the switch K1 and the switch K2, respectively, and pins 7 and 8 of the chip U5 are connected to the LED lamp D1 and the LED lamp D2, respectively.
A DRF1609H type chip U5 is adopted, and the chip works in a coordinator mode and is responsible for networking and data transmission of all terminals in the control system.
Referring to fig. 7, the USB module 22 includes a USB interface J1, a voltage regulator chip U6, and a USB serial chip U7, wherein pin 1 of the USB interface J1 is connected to pin 3 of the voltage regulator chip U6, pins 2 and 3 of the USB interface J1 are connected to pins 6 and 5 of the USB serial chip U7, pin 2 of the voltage regulator chip U6 outputs VCC3.3V voltage, pins 2 and 3 of the USB serial chip U7 are connected to pins 5 and 6 of the chip U5, and pins 4 and 16 of the USB serial chip U7 are connected to pin VCC3.3V voltage.
By adopting the CH340G chip U7, the mutual conversion of serial port signals and USB signals can be realized, and wireless data are transmitted to an upper computer. The USB interface J1 can provide 5V \500mA DC power supply, and the voltage regulation chip U6 converts the 5V power supply into 3.3V power supply to supply power for the coordinator 21.
The force measuring sensor monitoring system based on the ZigBee wireless network technology can be provided with a plurality of force measuring sensor terminal node sensors, automatic routing and dynamic maintenance routing can be realized based on the terminal node module 1, the terminal node sensors have automatic networking and network self-healing functions in a network, one node is added or deleted, or the node breaks down and the like, the network can be self-repaired, corresponding adjustment is carried out on a network topological structure, manual intervention is not needed, the stable work of the whole system is ensured, a plurality of measuring points can be arranged in the space of a plurality of obstacles, and the stability of wireless transmission is not influenced.
According to the force measuring sensor monitoring system based on the ZigBee wireless network technology, the ZigBee wireless transparent transmission module 16 is adopted to transmit signals, power consumption is low, a lithium battery pack is used for supplying power, the installation mode is flexible, the use is flexible, and the terminal node module 1 can be installed in places with limited wiring and limited working conditions.
This force cell sensor monitoring system based on zigBee wireless network technique adopts zigBee wireless network protocol, and this kind of communication protocol is fit for the force cell sensor data acquisition of short distance, time delay weak point, low data rate, compares wifi, bluetooth, lora technique, and suitability and reliability are better.
According to the force measuring sensor monitoring system based on the ZigBee wireless network technology, the wireless force measuring sensors are simple to set, calibration data are stored in the terminal node module 1, and remote control can be carried out. After the installation is finished, parameters such as calibration data and a sleep mode of the ZigBee force transducer terminal node can be set through the upper computer, the remote electric quantity checking function is achieved, and the battery is replaced according to a service condition plan.
In summary, the following steps: the force measuring sensor monitoring system based on the ZigBee wireless network technology has automatic routing and dynamic maintenance routing, a network can repair itself no matter a node is added or deleted or the node is in fault, and the like, the network topology structure is correspondingly adjusted without manual intervention, the stable work of the whole system is ensured, and a plurality of measuring points can be arranged in the space of multiple obstacles or in a structure body without influencing wireless transmission; the method has the advantages of low power consumption, ad hoc network, low cost, low speed and strong anti-interference performance, thereby effectively solving the problems in the prior art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. Force cell sensor monitoring system based on zigBee wireless network technique, including terminal node module (1), coordinator module (2) and host computer processing module (3), its characterized in that: the terminal node module (1) is connected to the coordinator module (2), and the coordinator module (2) is connected to the upper computer processing module (3); terminal node module (1) still includes power sensitive elastomer (11), strain gauge bridge formula circuit (12), filtering amplification circuit (13), ADC conversion module (14), MCU main control module (15), the wireless biography module (16) of zigBee, power module (17) and peripheral hardware button (18), strain gauge bridge formula circuit (12) are located in power sensitive elastomer (11) to be connected in filtering amplification circuit (13), filtering amplification circuit (13) are connected in ADC conversion module (14), ADC conversion module (14) are connected in MCU main control module (15), MCU main control module (15) are connected in the wireless biography module (16) of zigBee, the wireless biography module (16) of zigBee is connected in peripheral hardware button (18), peripheral hardware button (18) are connected in power module (17), power module (17) are connected in ADC conversion module (14), The MCU main control module (15) and the ZigBee wireless transparent transmission module (16); the coordinator module (2) further comprises a coordinator (21) and a USB module (22); the upper computer processing module (3) further comprises data acquisition monitoring software (31) and a database (32).
2. The force sensor monitoring system based on ZigBee wireless network technology of claim 1, wherein: the ADC conversion module (14) is composed of an A/D converter chip U1 and a voltage stabilization chip U2, wherein a pin 1 of the voltage stabilization chip U2 is connected to the positive electrode of a Battery, a pin 3 of the voltage stabilization chip U2 is connected with a pin 1 of an A/D converter chip U1 after being connected with an inductor L1 in series, a pin 3 of an A/D converter chip U1 is connected with a pin 1 of an interface P1, a pin 6 of the A/D converter chip U1 is connected with a capacitor C4 and a capacitor C6 in series and is connected with a pin 3 circuit interface of the A/D converter chip U1, a pin 7 of the A/D converter chip U1 is connected with a resistor R9 in series and is connected with a pin 3 of the interface P1 in series, and a pin 8 resistor R10 of the A/D converter chip U1 is connected with a pin 4 of the interface P1.
3. The force sensor monitoring system based on ZigBee wireless network technology of claim 1, wherein: MCU main control module (15) comprises main control chip U3, 4 feet of main control chip U3 are connected in resistance R1 and resistance R2 circuit interface that concatenates, and the two poles of the earth of series connection resistance R1 and resistance R2 are connected respectively in Battery's anodal and negative pole, 5 feet of main control chip U3 are connected in the 15 feet of AD converter chip U1, 8 feet, the 9 feet of main control chip U3 are connected respectively in 12 feet, the 11 feet of AD converter chip U1.
4. The force sensor monitoring system based on ZigBee wireless network technology of claim 1, wherein: the ZigBee wireless transparent transmission module (16) is composed of a chip U4, pins 3 and 4 of the chip U4 are respectively connected to pins 7 and 6 of a main control chip U3, and pins 5 and 6 of the chip U4 are respectively connected to pins 10 and 11 of a main control chip U3.
5. The force sensor monitoring system based on ZigBee wireless network technology of claim 1, wherein: the coordinator (21) is composed of a chip U5, a pin 1 of the chip U5 is connected to VCC3.3V voltage, pins 3 and 4 of the chip U5 are connected to a switch K1 and a switch K2 respectively, and a pin 7 and a pin 8 of the chip U5 are connected to an LED lamp D1 and an LED lamp D2 respectively.
6. The force sensor monitoring system based on ZigBee wireless network technology of claim 1, wherein: the USB module (22) is composed of a USB interface J1, a voltage stabilizing chip U6 and a USB serial port chip U7, wherein a pin 1 of the USB interface J1 is connected to a pin 3 of the voltage stabilizing chip U6, pins 2 and 3 of the USB interface J1 are respectively connected to a pin 6 and a pin 5 of the USB serial port chip U7, a pin 2 of the voltage stabilizing chip U6 outputs VCC3.3V voltage, pins 2 and 3 of the USB serial port chip U7 are connected to a pin 5 and a pin 6 of the chip U5, and a pin 4 and a pin 16 of the USB serial port chip U7 are connected to the voltage VCC3.3V.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111885531A (en) * | 2020-07-21 | 2020-11-03 | 浙江鑫网能源工程有限公司 | Force cell sensor monitoring system based on ZigBee wireless network technology |
| CN115096478A (en) * | 2022-06-23 | 2022-09-23 | 中北大学 | Switch conversion resistance intelligent test system |
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