CN116878729B - Force transducer correction system and method based on wireless transmission - Google Patents
Force transducer correction system and method based on wireless transmission Download PDFInfo
- Publication number
- CN116878729B CN116878729B CN202311148796.0A CN202311148796A CN116878729B CN 116878729 B CN116878729 B CN 116878729B CN 202311148796 A CN202311148796 A CN 202311148796A CN 116878729 B CN116878729 B CN 116878729B
- Authority
- CN
- China
- Prior art keywords
- resistor
- resistance
- bridge
- module
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000012937 correction Methods 0.000 title claims description 64
- 238000012544 monitoring process Methods 0.000 claims abstract description 70
- 238000001514 detection method Methods 0.000 claims description 103
- 238000012423 maintenance Methods 0.000 claims description 26
- 230000002159 abnormal effect Effects 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 16
- 230000008859 change Effects 0.000 claims description 14
- 230000001960 triggered effect Effects 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 5
- 230000000737 periodic effect Effects 0.000 claims description 5
- 230000032683 aging Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 230000001276 controlling effect Effects 0.000 description 9
- 230000006870 function Effects 0.000 description 9
- 238000007726 management method Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- 238000004590 computer program Methods 0.000 description 2
- 238000013500 data storage Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
-
- 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
-
- 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
-
- 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
- G01L1/2268—Arrangements for correcting or for compensating unwanted effects
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The application relates to the technical field of strain monitoring and discloses a system and a method for correcting a force transducer based on wireless transmission, wherein the force transducer correcting system based on wireless transmission comprises a force transducer comprising a strain resistor R1; the force measuring circuit comprises a bridge module, an adjustable power supply, a force measuring sensor, a first interface J1, a second interface J2 and a third interface J3; the bridge module is connected with the strain resistor R1 in a pluggable manner through the first interface J1, and a Wheatstone bridge is formed when the bridge module is connected with the strain resistor R1; the adjustable power supply is connected to the bridge module in a pluggable manner through the second interface J2; the electric sensor is connected to the bridge module in a pluggable manner through the third interface J3; the control module is electrically connected with the force measuring circuit to control the force measuring circuit; the method has the effect of reducing the influence of resistor ageing of the force measuring circuit on accuracy of the connecting piece fastening force monitoring data.
Description
Technical Field
The application relates to the technical field of strain monitoring, in particular to a system and a method for correcting a force transducer based on wireless transmission.
Background
The bolt connection has the advantages of being detachable, not damaging the connected piece and the like, is widely applied to structural member connection of mechanical equipment, buildings and the like, and the bolt connection cannot be loosened naturally under static load due to the self-locking characteristic, however, under the condition of impact, vibration or variable load, the bolt can be loosened, and similar problems exist for other types of connecting pieces.
At present, various connecting piece anti-loosening methods such as friction anti-loosening, mechanical anti-loosening, riveting and cementing anti-loosening exist, but the anti-loosening methods only can delay the loosening of the connecting piece or reduce the possibility of the loosening of the connecting piece, and cannot completely ensure the reliability of the connecting piece; therefore, in the construction field of rail transit, transmission towers, large bridges and the like, which have high requirements on safety, a load cell is often used for monitoring the fastening force of a connecting piece. Many force sensors monitor deformation of a connecting piece through a strain gauge to calculate fastening force, and in the actual monitoring process, the resistance value of the strain gauge needs to be monitored through a force measuring circuit; the resistance wire on the strain gauge is usually packaged by the substrate and the cover layer so as to prolong the service life of the strain gauge, and other resistors in the force measuring circuit are not specially packaged, so that the condition that the corresponding resistance value changes due to the ageing of the resistor can occur in the long-term use process of the force measuring circuit, and the accuracy of monitoring data is affected.
Therefore, as known from the related art, in the fastening force monitoring of the connector, there is a problem that the accuracy of the monitored data is affected by the aging of the resistor of the force measuring circuit.
Disclosure of Invention
In order to reduce the influence of resistor ageing of a force measuring circuit on the accuracy of connecting piece fastening force monitoring data, the application provides a force measuring sensor correction system and a force measuring sensor correction method based on wireless transmission.
The first technical scheme adopted by the invention of the application is as follows:
a wireless transmission based load cell correction system comprising:
a load cell comprising a strain resistor R1 for monitoring the strain amount change of the connecting piece and converting the strain amount change into a resistance value change amount of the strain resistor R1;
the force measuring circuit comprises a bridge module, an adjustable power supply, a force measuring sensor, a first interface J1, a second interface J2 and a third interface J3;
the bridge module is connected with the strain resistor R1 in a pluggable manner through the first interface J1, and a Wheatstone bridge is formed when the bridge module is connected with the strain resistor R1;
the adjustable power supply is connected to the bridge module in a pluggable manner through the second interface J2 and is used for supplying power to the bridge module;
the electric sensor is connected to the bridge module in a pluggable manner through the third interface J3 and is used for measuring an electric signal output by the bridge module;
The control module is electrically connected to the force measuring circuit to control the force measuring circuit, and comprises:
the circuit self-checking instruction sending sub-module is used for generating a circuit self-checking instruction based on preset self-checking plan information and sending the circuit self-checking instruction to the control module so as to execute the self-checking work of the force measuring circuit, wherein the self-checking plan information comprises self-checking period information;
the resistance value deviation rate calculation sub-module is used for obtaining the resistance detection value of each bridge resistor and calculating the resistance value deviation rate of each bridge resistor based on the resistance detection value and the corresponding resistance standard value;
the power measuring circuit maintenance information generation sub-module is used for generating power measuring circuit maintenance information and sending the power measuring circuit maintenance information to the management terminal if the deviation rate of the resistance value of any bridge resistor is larger than a preset deviation threshold value;
and the force measuring circuit is used for re-calibrating the corresponding bridge resistors based on the resistance detection values if the deviation rate of the resistance values of the bridge resistors is smaller than a preset deviation threshold value.
By adopting the technical scheme, the force transducer is used for monitoring the change of the strain quantity of the connecting piece and converting the change of the resistance value of the strain resistor R1, the bridge module of the force measuring circuit and the strain resistor R1 form a Wheatstone bridge, and the change of the resistance value of the strain resistor R1 is calculated by the electric parameter of the current input to the bridge module by the adjustable power supply and the electric parameter of the current output from the Wheatstone bridge and measured by the electric transducer, so that the fastening force of the connecting piece is calculated; the control module is used for controlling the force measuring circuit, comprising controlling the electric parameters of the adjustable power supply, and calculating the fastening force of the connecting piece based on the electric parameters measured by the electric sensor; the bridge module is connected with the strain resistor R1 in a pluggable manner through the first interface J1, so that when a resistance component in the bridge module is damaged, a new bridge module is replaced, and the influence of resistor aging of the force measuring circuit on the accuracy of the connecting piece fastening force monitoring data is reduced.
In a preferred example, the present application: the bridge module comprises a second resistor R2, a third resistor R3 and a fourth resistor R4, and when the bridge module is connected with the strain resistor R1, the second resistor R2, the fourth resistor R4 and the third resistor R3 are sequentially connected to form a Wheatstone bridge;
the force measuring circuit comprises a resistance correction module which comprises an adjustable resistor R5 and is used for being connected with any bridge arm of the Wheatstone bridge in parallel.
By adopting the technical scheme, the strain resistor R1 is sequentially connected with the second resistor R2, the fourth resistor R4 and the third resistor R3 of the bridge module to form the Wheatstone bridge, the force measuring circuit comprises a resistance correction module used for connecting any bridge arm of the Wheatstone bridge in parallel, and the resistance value of the strain resistor R1 can be measured by the force measuring circuit, and the resistance values of the second resistor R2, the third resistor R3 and the fourth resistor R4 can be measured according to the measured resistance value of the strain resistor R1, and the resistance correction module is connected with each bridge arm of the Wheatstone bridge in parallel and adjusts the resistance value of the adjustable resistor R5 to check whether the resistance value of each resistor is abnormal or not.
In a preferred example, the present application: the bridge module is provided with a contact a, a contact b, a contact c and a contact d, wherein the contact a is electrically connected to one end of the third resistor R3 far away from the fourth resistor R4, the contact b is electrically connected to one end of the second resistor R2 far away from the fourth resistor R4, the contact c is electrically connected to a connection node of the second resistor R2 and the fourth resistor R4, and the contact d is electrically connected to a connection node of the fourth resistor R4 and the third resistor R3;
and the two ends of the resistance correction module are provided with a contact e and a contact f which are used for being connected with the contact a, the contact b, the contact c or the contact d.
By adopting the technical scheme, the bridge module is provided with the contact a, the contact b, the contact c and the contact d, and the two ends of the resistance correction module are provided with the contact e and the contact f, so that the effect of connecting the resistance correction module and each bridge arm in parallel is realized by adjusting the connection relation between the contacts.
In a preferred example, the present application: the resistance correction module further comprises a switch S1, and the switch S1 is connected in series with the adjustable resistor R5.
By adopting the technical scheme, the fourth interface J4 is used for realizing pluggable connection of the electric sensor and two ends of the resistance correction module, and the resistance correction module further comprises the switch S1, so that the electric sensor can directly measure the total resistance value of the bridge arm and the adjustable resistor R5 after being connected in parallel, and can also directly measure the resistance value of the bridge arm.
In a preferred example, the present application: further comprises:
the signal conversion module is electrically connected with the force measuring circuit and is used for converting signals input/output to the force measuring circuit;
the data transmission modules are electrically connected with the signal conversion module and the control module, and the data transmission modules are connected with each other through wireless signals.
By adopting the technical scheme, the signal conversion module is electrically connected with the force measuring circuit and is used for realizing the function of converting signals input/output to the force measuring circuit, and the signal conversion module comprises the function of converting electric parameters measured by the electric sensor and is convenient for subsequent data transmission and data processing; the data transmission module is electrically connected with the signal conversion module and the control module so as to realize wireless data transmission between the signal conversion module and the control module.
The second object of the present application is achieved by the following technical scheme:
A method for calibrating a load cell based on wireless transmission, for controlling the load cell calibration system based on wireless transmission of any one of the above, comprising:
generating a circuit self-checking instruction based on preset self-checking plan information and sending the instruction to a control module to execute self-checking work of a force measuring circuit, wherein the self-checking plan information comprises self-checking period information;
acquiring resistance detection values of the bridge resistors, and calculating the deviation rate of the resistance values of the bridge resistors based on the resistance detection values and the corresponding resistance standard values;
if the deviation rate of the resistance value of any bridge resistor is larger than a preset deviation threshold value, generating maintenance information of the force measuring circuit and sending the maintenance information to the management terminal;
if the deviation rate of the resistance values of the bridge resistors is smaller than the preset deviation threshold value, the corresponding bridge resistors are recalibrated based on the resistance detection values.
By adopting the technical scheme, the circuit self-checking instruction is generated based on the preset self-checking plan information, the circuit self-checking instruction is sent to the control module, and the self-checking plan information comprises self-checking period information, so that the force measuring circuit can be conveniently subjected to self-checking work regularly; obtaining the resistance detection value of each bridge resistor so as to calculate the deviation rate of the resistance value of each bridge resistor according to the resistance detection value and the resistance standard value, and obtaining the deviation degree of the current resistance value of each bridge resistor and the resistance standard value; if the resistance deviation rate of any bridge resistor in the force measuring circuit is larger than a preset deviation threshold, generating maintenance information of the force measuring circuit and sending the maintenance information to the management terminal so as to guide a manager to maintain or replace the force measuring circuit; if the deviation rate of the resistance values of the bridge resistors is smaller than the preset deviation threshold value, the corresponding bridge resistors are recalibrated based on the resistance detection values, so that accuracy of the connecting piece fastening force monitoring data is improved, and influence of resistor aging of the force measuring circuit on the accuracy of the connecting piece fastening force monitoring data is reduced.
In a preferred example, the present application: before the circuit self-checking instruction is generated based on the preset self-checking plan information and sent to the control module, the method comprises the following steps:
acquiring fastening force monitoring data based on a preset data acquisition period, inputting the fastening force monitoring data into a connecting piece monitoring model, and generating period monitoring result information;
and when the period monitoring result information is abnormal fastening force, inputting the period monitoring result information into the self-checking plan information.
By adopting the technical scheme, the fastening force monitoring data is acquired according to the preset data acquisition period, so that the fastening force monitoring data is adapted to the data storage and data processing capacity of the correction system hardware of the force sensor based on wireless transmission; inputting the fastening force monitoring data into a connecting piece monitoring model so as to judge whether the fastening force of the connecting piece is normal or not and generate corresponding period monitoring result information; when the period monitoring result information is abnormal fastening force, factors causing abnormal fastening force of the connecting piece exist, which may be caused by abnormal fastening force of the connecting piece or abnormal force measuring circuit, and the period monitoring result information of abnormal fastening force is input into the self-checking plan information so as to list the abnormal fastening force of the connecting piece as starting conditions of self-checking work of the force measuring circuit.
In a preferred example, the present application: the acquiring the resistance detection value of each bridge resistor comprises the following steps:
determining a target resistor from the bridge resistors in sequence, generating a self-checking target instruction and sending the self-checking target instruction to a control module and a resistance correction module;
measuring a first detection value of a target resistor when the resistance correction module is in an off state, and measuring a second detection value group of the target resistor when the resistance correction module is in an on state, wherein a plurality of detection values in the second detection value group correspond to a plurality of resistance values of the resistance correction module;
and calculating a resistance detection value based on the first detection value and the second detection value group, wherein the resistance detection value is the average value of all detection values in the first detection value and the second detection value group.
By adopting the technical scheme, the target resistor is sequentially determined from the bridge resistor so as to generate a self-checking target instruction, the self-checking target instruction is sent to the control module and the resistance correction module so as to control the adjustable power supply to supply power, a corresponding resistance value calculation formula is determined, and the resistance correction module is connected in parallel with the target resistor; the resistance value of the target resistor is measured to be a first detection value when the resistance correction module is in an off state, the resistance value of the target resistor is measured to be a second detection value group when the resistance correction module is in an on state, a plurality of detection values in the second detection value group correspond to different resistance values of the resistance correction module, and an average value is calculated according to the first detection value and the second detection value group to serve as the resistance detection value so as to improve the accuracy of the resistance detection value.
In a preferred example, the present application: and calculating the deviation rate of the resistance values of the bridge resistors based on the resistance detection values and the corresponding resistance standard values:
resistance value deviation rate =I resistance detection value-resistance standard value I ≡resistance standard value x 100%
By adopting the technical scheme, the deviation rate of the resistance value is calculated, so that the deviation degree of the current resistance value and the resistance standard value of each bridge resistor is conveniently judged, corresponding force measuring circuit maintenance measures are adopted according to the deviation degree of the resistance value of the bridge resistor, and the rationality of the force measuring circuit maintenance measures is improved.
In a preferred example, the present application: further comprises:
when a resistance value compensation instruction is triggered, determining a resistor to be compensated, and acquiring a resistance detection value of the resistor to be compensated;
and calculating a resistance value to be compensated corresponding to the resistor to be compensated, and calculating a resistance compensation value based on the resistance detection value and the resistance value to be compensated.
By adopting the technical scheme, when the resistance value of a specific bridge arm in the bridge module is required to be regulated, for example, when the fastening force monitoring work of the connecting piece is required to be executed by a bridge balancing method, a resistance value compensation instruction can be triggered, and when the resistance value compensation instruction is triggered, a resistor to be compensated is determined, and a corresponding resistance detection value is acquired so as to acquire the current resistance value of the resistor to be compensated; the adjusting target for the bridge arm resistance value is calculated to be the resistance value to be compensated, and the resistance compensation value is calculated to be used as the resistance value adjusting target of the resistance correction module based on the resistance detection value and the resistance value to be compensated so as to achieve the effect of adjusting the specific bridge arm resistance value by adjusting the resistance value of the resistance correction module.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the force measuring sensor is used for monitoring the change of the strain quantity of the connecting piece and converting the change of the resistance value of the strain resistor R1, the bridge module of the force measuring circuit and the strain resistor R1 form a Wheatstone bridge, and the change of the resistance value of the strain resistor R1 is calculated through the electric parameter of the current input to the bridge module by the adjustable power supply and the electric parameter of the current output from the Wheatstone bridge and measured by the force measuring sensor, so that the fastening force of the connecting piece is calculated; the control module is used for controlling the force measuring circuit, comprising controlling the electric parameters of the adjustable power supply, and calculating the fastening force of the connecting piece based on the electric parameters measured by the electric sensor; the bridge module is connected with the strain resistor R1 in a pluggable manner through the first interface J1, so that when a resistance component in the bridge module is damaged, a new bridge module is replaced, and the influence of resistor aging of the force measuring circuit on the accuracy of the connecting piece fastening force monitoring data is reduced.
2. Generating a circuit self-checking instruction based on preset self-checking plan information, and sending the circuit self-checking instruction to a control module, wherein the self-checking plan information comprises self-checking period information, so that the self-checking work of a force measuring circuit is conveniently carried out regularly; obtaining the resistance detection value of each bridge resistor so as to calculate the deviation rate of the resistance value of each bridge resistor according to the resistance detection value and the resistance standard value, and obtaining the deviation degree of the current resistance value of each bridge resistor and the resistance standard value; if the resistance deviation rate of any bridge resistor in the force measuring circuit is larger than a preset deviation threshold, generating maintenance information of the force measuring circuit and sending the maintenance information to the management terminal so as to guide a manager to maintain or replace the force measuring circuit; if the deviation rate of the resistance values of the bridge resistors is smaller than the preset deviation threshold value, the corresponding bridge resistors are recalibrated based on the resistance detection values, so that accuracy of the connecting piece fastening force monitoring data is improved, and influence of resistor aging of the force measuring circuit on the accuracy of the connecting piece fastening force monitoring data is reduced.
3. The strain resistor R1 is sequentially connected with the second resistor R2, the fourth resistor R4 and the third resistor R3 of the bridge module to form a Wheatstone bridge, the force measuring circuit comprises a resistance correction module which is used for connecting any bridge arm of the Wheatstone bridge in parallel, and the resistance value of the strain resistor R1 can be measured by the force measuring circuit, and the resistance values of the second resistor R2, the third resistor R3 and the fourth resistor R4 can be also measured according to the measured resistance value of the strain resistor R1, so that the resistance correction module is connected with each bridge arm of the Wheatstone bridge in parallel, and the resistance value of the adjustable resistor R5 is adjusted to check whether the resistance value of each resistor is abnormal or not.
Drawings
Fig. 1 is a schematic structural diagram of a calibration system for a load cell based on wireless transmission in a first embodiment of the present application.
Fig. 2 is a circuit diagram of a force measuring circuit in accordance with a first embodiment of the present application.
Fig. 3 is a flowchart of a method for calibrating a load cell based on wireless transmission in accordance with an embodiment of the present application.
Fig. 4 is a flowchart of step S10 in a method for calibrating a load cell based on wireless transmission according to the first embodiment of the present application.
Fig. 5 is a flowchart of step S20 in a method for calibrating a load cell based on wireless transmission according to the first embodiment of the present application.
Fig. 6 is another flowchart of a method for calibrating a load cell based on wireless transmission in accordance with an embodiment of the present application.
Reference numerals illustrate:
1. a load cell; 2. a force measuring circuit; 21. a bridge module; 22. an adjustable power supply; 23. a measuring sensor; 24. a resistance correction module; 3. a control module; 4. a signal conversion module; 5. and a data transmission module.
Detailed Description
The present application is described in further detail below in conjunction with figures 1 to 6.
Example 1
In this embodiment, the anti-loosening monitoring for the bolt connection is taken as an example, and the load cell 1 is specifically a pad sensor, and in other embodiments of the present application, the load cell correction system based on wireless transmission may be used for monitoring other types of connection and sensors, and is not limited to monitoring force or strain.
Referring to fig. 1 and 2, the application discloses a force transducer correction system based on wireless transmission, including force transducer 1, force measuring circuit 2, signal conversion module 4, data transmission module 5 and control module 3, wherein, force transducer 1 is used for monitoring the fastening force variation of connecting piece, force measuring circuit 2 electricity is connected in force transducer 1, be used for providing the electric energy to force transducer 1, and the electrical parameter of force transducer 1, signal conversion module 4 is used for being convenient for the data of transmission and computer equipment processing to the signal conversion module 2 output, data transmission module 5 is used for transmitting data, control module 3 electricity is connected in force measuring circuit 2, be used for processing data, and control force measuring circuit 2.
The force transducer 1 is used for monitoring deformation of a connecting piece, a strain gauge is arranged in the force transducer 1, and a strain resistor R1 is arranged in the strain gauge so as to convert the monitored strain into a resistance value of the strain resistor R1 and convert the monitored strain change of the connecting piece into a resistance value change of the strain resistor R1, thereby converting the measured non-electric parameters into electric parameters which are convenient for subsequent data transmission and processing.
The force measuring circuit 2 comprises a bridge module 21, an adjustable power supply 22, a force measuring sensor 23, a first interface J1, a second interface J2 and a third interface J3; specifically, the first interface J1, the second interface J2 and the third interface J3 are pluggable circuit connection interfaces, and the first interface J1, the second interface J2 and the third interface J3 can also control the on/off state through computer instructions or electric signals, and the on/off state of the circuits is not required to be realized through a way of physically separating the circuits at two ends of the interfaces, and because the on/off state of the interface device is controlled to be switched to the prior art through the computer instructions or the electric signals, the principle and the specific structure of the embodiment are not repeated; the adjustable power supply 22 can control and output electric energy with specific voltage values and current values according to received computer instructions, including direct current and alternating current, and can control and output the frequency of the alternating current; the sensor 23 is a sensor having a voltage and current detecting function, and in this embodiment, the sensor 23 is a sensor having a function of converting a detected electrical parameter into a digital signal.
The bridge module 21 includes a second resistor R2, a third resistor R3, and a fourth resistor R4, and when the bridge module 21 is connected with the strain resistor R1 through the first interface J1 in a pluggable manner, the strain resistor R1, the second resistor R2, the fourth resistor R4, and the third resistor R3 are sequentially connected to form a wheatstone bridge; the adjustable power supply 22 is connected to the bridge module 21 in a pluggable manner through the second interface J2, and is configured to supply power to the bridge module 21, where two output ends of the adjustable power supply 22 are respectively connected to: a connection node of the fourth resistor R4 and the third resistor R3, a connection node of the strained resistor R1 and the second resistor R2; the measuring sensor 23 is connected to the bridge module 21 in a pluggable manner through the third interface J3, and is used for measuring an electrical signal output by the bridge module 21, and two monitoring ends of the measuring sensor 23 are respectively connected to: a connection node of the second resistor R2 and the fourth resistor R4, a connection node of the strained resistor R1 and the third resistor R3; the resistance value variation of the strain resistor R1 is calculated conveniently through the electric parameter of the current input to the bridge module 21 by the adjustable power supply 22 and the electric parameter of the current output from the Wheatstone bridge measured by the electric sensor 23, and the fastening force variation of the connecting piece is calculated; the pluggable connection mode of the first interface J1, the second interface J2 and the third interface J3 facilitates replacement of a new bridge module 21 when the resistance components in the bridge module 21 are damaged, and therefore the influence of resistor ageing of the force measuring circuit 2 on accuracy of the connection piece fastening force monitoring data is reduced.
The force measuring circuit 2 further comprises a resistance correction module 24, the resistance correction module 24 comprises an adjustable resistor R5 and a switch S1, the adjustable resistor R5 is connected with the switch S1 in series, and two ends of the resistance correction module 24 are respectively provided with a contact e and a contact f; the bridge module 21 is provided with a contact a electrically connected to an end of the third resistor R3 remote from the fourth resistor R4, a contact b electrically connected to an end of the second resistor R2 remote from the fourth resistor R4, a contact c electrically connected to a connection node of the second resistor R2 and the fourth resistor R4, and a contact d electrically connected to a connection node of the fourth resistor R4 and the third resistor R3; the effect of connecting the resistance correction module 24 in parallel with each leg of the wheatstone bridge is achieved by adjusting the connection relationship between the contacts, so that the resistance correction module 24 can be connected in parallel with any leg of the wheatstone bridge.
The electric sensor 23 is also provided with a fourth interface J4, and the contact e and the contact f are connected to the electric sensor 23 in a pluggable manner through the fourth interface J4; the fourth interface J4 is a pluggable circuit connection interface, and the fourth interface J4 can also control the on/off state through a computer instruction or an electric signal without realizing the on/off of a circuit by physically separating circuits at two ends of the interface; so that the sensor 23 can directly measure the total resistance value of the bridge arm connected in parallel with the adjustable resistor R5, or can directly measure the resistance value of the bridge arm not connected in parallel with the adjustable resistor R5.
The force measuring circuit 2 is also electrically connected with a signal conversion module 4, which is used for realizing the function of converting signals input/output to the force measuring circuit 2, including converting electric parameters measured by a force measuring sensor 23, facilitating subsequent data transmission and data processing, and converting a data format of a control instruction sent by the control module 3 to the adjustable power supply 22; the signal conversion module 4 may be an MCU module storing a signal conversion program.
The calibration system of the load cell based on wireless transmission further comprises a plurality of data transmission modules 5, each signal conversion module 4 is electrically connected to one data transmission module 5, the control module 3 is also electrically connected to one data transmission module 5, and specifically, the data transmission module 5 is a LORA communication module so as to realize wireless data transmission between the signal conversion module 4 and the control module 3.
A control module 3 electrically connected to the force measuring circuit 2 for controlling the force measuring circuit 2, wherein the control module 3 is a computer device capable of storing and executing a computer program, and the control module 3 comprises:
the circuit self-checking instruction sending sub-module is used for generating a circuit self-checking instruction based on preset self-checking plan information and sending the circuit self-checking instruction to the control module 3 so as to execute the self-checking work of the force measuring circuit 2, wherein the self-checking plan information comprises self-checking period information.
And the resistance value deviation rate calculation sub-module is used for obtaining the resistance detection value of each bridge resistor and calculating the resistance value deviation rate of each bridge resistor based on the resistance detection value and the corresponding resistance standard value.
And the maintenance information generation sub-module of the force measurement circuit 2 is used for generating maintenance information of the force measurement circuit 2 and sending the maintenance information to the management terminal if the deviation rate of the resistance value of any bridge resistor is larger than a preset deviation threshold value.
The force measuring circuit 2 is used for recalibrating the corresponding bridge resistors based on the resistance detection values if the deviation rate of the resistance values of the bridge resistors is smaller than a preset deviation threshold value.
The method by which each sub-module of the control module 3 performs its function is referred to below in the description of the method for calibrating a load cell based on wireless transmission. Example two
Referring to fig. 3, the application discloses a calibration method for a load cell based on wireless transmission, which specifically includes the following steps:
s10: and generating a circuit self-checking instruction based on preset self-checking plan information and sending the instruction to a control module so as to execute the self-checking work of the force measuring circuit, wherein the self-checking plan information comprises self-checking period information.
In the present embodiment, the self-check plan information refers to information for recording a plan for detection by the force measuring circuit; the circuit self-checking instruction is an instruction for controlling execution of a self-checking operation of the force measuring circuit for the force measuring circuit; the self-checking period information refers to a preset period for executing self-checking work of the force measuring circuit.
Specifically, self-checking plan information is set, wherein the self-checking plan information comprises self-checking period information, a circuit self-checking instruction is generated based on the self-checking plan information, the circuit self-checking instruction is sent to a control module, and the follow-up periodic execution of the self-checking work of the force measuring circuit according to the self-checking period is facilitated, so that whether each component in a bridge module of the force measuring circuit is damaged or not is judged.
Further, the self-checking plan information can also set rules for automatically generating the circuit self-checking instructions according to actual demands, for example, when the fastening force value of the connecting piece is greatly suddenly changed, the circuit self-checking instructions are generated, or when the single-day temperature difference exceeds a specific value, the temperature is higher than the specific value, the temperature is lower than the specific value, the circuit self-checking instructions are automatically generated, and the like, so that the self-checking work of the force measuring circuit is executed according to the conditions that the connecting piece is possibly impacted and the temperature is changed, and the detection rate of abnormal conditions of the force measuring circuit is further improved.
As shown in fig. 4, before step S10, the method includes:
s11: and acquiring fastening force monitoring data based on a preset data acquisition period, inputting the fastening force monitoring data into a connecting piece monitoring model, and generating period monitoring result information.
In this embodiment, the data acquisition period refers to a period for acquiring fastening force monitoring data, and may be specifically determined according to the security requirement of the corresponding connector and the performance of the monitoring system; the connecting piece monitoring model is used for judging whether the fastening force of the connecting piece is normal or not according to the fastening force monitoring data; the period monitoring result information is a monitoring result of whether the tightening force monitoring data corresponding to each data acquisition period are normal or not.
Specifically, fastening force monitoring data are acquired according to a preset data acquisition period so as to adapt the fastening force monitoring data to the data storage and data processing capacity of the hardware of the correction system of the force sensor based on wireless transmission; and inputting the fastening force monitoring data into the connecting piece monitoring model so as to judge whether the fastening force of the connecting piece is normal or not, and generating corresponding periodic monitoring result information, wherein the periodic monitoring result information comprises normal fastening force and abnormal fastening force.
S12: and when the period monitoring result information is abnormal fastening force, inputting the period monitoring result information into the self-checking plan information.
Specifically, when the cycle monitoring result information is abnormal fastening force, there is a factor that causes abnormality of the fastening force monitoring data of the connection member, possibly due to abnormality of the connection member or abnormality of the force measuring circuit; inputting cycle monitoring result information of abnormal fastening force into self-checking plan information so as to list the abnormal fastening force of the connecting piece as starting conditions of self-checking work of the force measuring circuit; when the abnormal fastening force event is detected, the self-checking work of the force measuring circuit is firstly executed to judge whether the force measuring circuit is normal, if the force measuring circuit is normal, the connecting piece is considered to be invalid, and the corresponding work is further executed, such as sending an alarm signal; if the force measuring circuit is abnormal, whether the connecting piece fails or not is further judged according to the actual resistance value of each bridge resistor in the detection result of the force measuring circuit, so that the possibility of false alarm caused by damage of the force measuring circuit is reduced.
S20: and acquiring the resistance detection value of each bridge resistor, and calculating the deviation rate of the resistance value of each bridge resistor based on the resistance detection value and the corresponding resistance standard value.
In this embodiment, the bridge resistor refers to a resistor component in the bridge module, including a second resistor R2, a third resistor R3, and a fourth resistor R4; the resistance detection value refers to a current actual resistance value determined by actually measuring the resistance value of the bridge resistor through a force transducer correction system based on wireless transmission; the standard resistance value refers to a theoretical resistance value of the bridge resistor, and specifically can be determined according to a nominal resistance value of the bridge resistor or after the last calibration of the resistance value of the bridge resistor.
Specifically, the resistance detection value of each bridge resistor is obtained so that the resistance value deviation ratio of each bridge resistor is calculated from the resistance detection value and the resistance standard value.
Specifically, the deviation rate of the resistance value=the resistance detection value-the resistance standard value I/100%, and the deviation rate of the resistance value is calculated, so that the deviation degree of the current resistance value and the resistance standard value of each bridge resistor can be conveniently judged, corresponding force measuring circuit maintenance measures, such as replacement or recalibration, can be conveniently adopted according to the deviation degree of the resistance value of each bridge resistor, and the rationality of the force measuring circuit maintenance measures can be improved.
As shown in fig. 5, in step S20, the method includes:
s21: and determining a target resistor from the bridge resistors in sequence, generating a self-checking target instruction and sending the self-checking target instruction to the control module and the resistance correction module.
In this embodiment, the target resistor refers to a target bridge resistor selected from a plurality of bridge resistors at the time of acquiring the resistance detection value at this time when the force measuring circuit self-test operation is performed; the self-checking target instruction refers to an instruction for triggering the acquisition of a resistance detection value for a target resistor, and includes identification information of the target resistor.
Specifically, a target resistor is sequentially determined from bridge resistors according to a preset detection sequence to generate a self-checking target instruction, the self-checking target instruction is sent to a control module and a resistance correction module to control an adjustable power supply to supply electric energy to a force measuring circuit, a resistance value calculation formula corresponding to the target resistor is determined according to a resistance standard value of the target resistor and resistance standard values of other non-target bridge resistors, and the resistance correction module is connected in parallel to the target resistor.
S22: and measuring a first detection value of the target resistor when the resistance correction module is in an off state, and measuring a second detection value group of the target resistor when the resistance correction module is in an on state, wherein a plurality of detection values in the second detection value group correspond to a plurality of resistance values of the resistance correction module.
Specifically, by controlling the switch S1 of the resistance correction module, the resistance value between the two end nodes of the target resistor is measured as a first detection value when the resistance correction module is in the off state, the resistance value between the two end nodes of the target resistor is measured as a second detection value set when the resistance correction module is in the on state, and a plurality of detection values in the second detection value set correspond to different resistance values of the resistance correction module, for example, the resistance value adjustment range of the adjustable resistor R5 of the resistance correction module is 1-100 Ω, and each detection value in the second detection value set can be measured when the resistance value of the adjustable resistor R5 is 1 Ω, 50 Ω, 100 Ω.
S23: and calculating a resistance detection value based on the first detection value and the second detection value group, wherein the resistance detection value is the average value of all detection values in the first detection value and the second detection value group.
Specifically, an average value is calculated as a resistance detection value based on each detection value in the first detection value and the second detection value group, so as to improve the accuracy of the resistance detection value and reduce accidental errors.
S30: if the deviation rate of the resistance value of any bridge resistor is larger than a preset deviation threshold value, generating maintenance information of the force measuring circuit and sending the maintenance information to the management terminal.
In the present embodiment, the deviation threshold value refers to a threshold value for judging whether or not the deviation rate of the resistance value is abnormal, and preferably, the deviation threshold value may be set to 20%; the force measurement circuit maintenance information is information for guiding a manager to maintain or replace an abnormal bridge resistor in the force measurement circuit, and comprises identification information of the bridge resistor with the resistance value deviation rate larger than a preset deviation threshold value.
Specifically, if the resistance deviation rate of any bridge resistor in the force measuring circuit is greater than a preset deviation threshold, generating maintenance information of the force measuring circuit and sending the maintenance information to the management terminal so as to guide a manager to maintain or replace the force measuring circuit.
S40: if the deviation rate of the resistance values of the bridge resistors is smaller than the preset deviation threshold value, the corresponding bridge resistors are recalibrated based on the resistance detection values.
Specifically, if the deviation rate of the resistance values of the bridge resistors is smaller than the preset deviation threshold value, the corresponding bridge resistors are recalibrated based on the resistance detection values, so that accuracy of the connecting piece fastening force monitoring data is improved, and influence of resistor aging of the force measuring circuit on the accuracy of the connecting piece fastening force monitoring data is reduced.
As shown in fig. 6, the calibration method of the load cell based on wireless transmission further includes:
s50: when a resistance value compensation instruction is triggered, determining a resistor to be compensated, and acquiring a resistance detection value of the resistor to be compensated.
In this embodiment, the resistance value compensation instruction refers to an instruction for controlling the resistance correction module to adjust the resistance value of a specific bridge arm; the resistor to be compensated refers to a bridge resistor located on the bridge arm to be adjusted.
Specifically, when the resistance value of a specific bridge arm in the bridge module needs to be adjusted, for example, when the fastening force monitoring work of the connection piece needs to be performed by a bridge balancing method, the function of (third resistor R3/fourth resistor R4) = (strained resistor R1/second resistor R2) by adjusting the resistance value of the adjustable resistor R5 to enable (third resistor R3/fourth resistor R4) = (strained resistor R1/second resistor R2) can be triggered because the resistance values of the third resistor R3, the fourth resistor R4 and the second resistor R2 are generally fixed and the resistance value of the strained resistor R1 depends on the fastening force of the connection piece to be measured; when the resistance value compensation instruction is triggered, the resistor to be compensated is determined, and a corresponding resistance detection value is obtained so as to acquire the current resistance value of the resistor to be compensated.
S60: and calculating a resistance value to be compensated corresponding to the resistor to be compensated, and calculating a resistance compensation value based on the resistance detection value and the resistance value to be compensated.
Specifically, an adjustment target for the bridge arm resistance value is calculated as a resistance value to be compensated, and the resistance compensation value is calculated as a resistance value adjustment target of the resistance correction module based on the resistance detection value and the resistance value to be compensated so as to achieve the effect of adjusting the specific bridge arm resistance value by adjusting the resistance value of the resistance correction module.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic of each process, and should not limit the implementation process of the embodiment of the present application in any way.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the various embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink), DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand; the technical scheme described in the foregoing embodiments can be modified or some of the features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (4)
1. A method for calibrating a load cell based on wireless transmission, applied to a load cell calibration system based on wireless transmission, comprising:
generating a circuit self-checking instruction based on preset self-checking plan information and sending the instruction to a control module to execute self-checking work of a force measuring circuit, wherein the self-checking plan information comprises self-checking period information;
Acquiring resistance detection values of the bridge resistors, and calculating the deviation rate of the resistance values of the bridge resistors based on the resistance detection values and the corresponding resistance standard values;
if the deviation rate of the resistance value of any bridge resistor is larger than a preset deviation threshold value, generating maintenance information of the force measuring circuit and sending the maintenance information to the management terminal;
if the deviation rate of the resistance values of the bridge resistors is smaller than a preset deviation threshold value, recalibrating the corresponding bridge resistors based on the resistance detection values;
the method for generating the circuit self-checking instruction based on the preset self-checking plan information and sending the circuit self-checking instruction to the control module comprises the following steps:
acquiring fastening force monitoring data based on a preset data acquisition period, inputting the fastening force monitoring data into a connecting piece monitoring model, and generating period monitoring result information;
when the periodic monitoring result information is abnormal in fastening force, inputting the periodic monitoring result information into self-checking plan information;
wherein, the load cell correction system based on wireless transmission includes: a load cell (1) comprising a strain resistor R1 for monitoring the strain change of a connection and converting the strain change into a resistance change of the strain resistor R1;
The force measuring circuit (2) comprises a bridge module (21), an adjustable power supply (22), a force measuring sensor (23), a first interface J1, a second interface J2 and a third interface J3;
the bridge module (21) is connected with the strain resistor R1 in a pluggable manner through the first interface J1, and a Wheatstone bridge is formed when the bridge module (21) is connected with the strain resistor R1;
the adjustable power supply (22) is connected to the bridge module (21) in a pluggable manner through the second interface J2 and is used for supplying power to the bridge module (21);
the electric measuring sensor (23) is connected to the bridge module (21) in a pluggable manner through the third interface J3 and is used for measuring an electric signal output by the bridge module (21);
-a control module (3) electrically connected to the force-measuring circuit (2) for controlling the force-measuring circuit (2), comprising:
the circuit self-checking instruction sending sub-module is used for generating a circuit self-checking instruction based on preset self-checking plan information and sending the circuit self-checking instruction to the control module (3) so as to execute self-checking work of the force measuring circuit (2), wherein the self-checking plan information comprises self-checking period information;
the resistance value deviation rate calculation sub-module is used for obtaining the resistance detection value of each bridge resistor and calculating the resistance value deviation rate of each bridge resistor based on the resistance detection value and the corresponding resistance standard value;
The maintenance information generation sub-module of the force measuring circuit (2) is used for generating maintenance information of the force measuring circuit (2) and sending the maintenance information to the management terminal if the deviation rate of the resistance value of any bridge resistor is larger than a preset deviation threshold value;
the force measuring circuit (2) is used for re-calibrating the corresponding bridge resistors based on the resistance detection values if the deviation rate of the resistance values of the bridge resistors is smaller than a preset deviation threshold value;
wherein the bridge module (21) comprises a second resistor R2, a third resistor R3 and a fourth resistor R4, and when the bridge module (21) is connected with the strain resistor R1, the second resistor R2, the fourth resistor R4 and the third resistor R3 are sequentially connected to form a Wheatstone bridge;
the force measuring circuit (2) comprises a resistance correction module (24), the resistance correction module (24) comprises an adjustable resistor R5, and the resistance correction module (24) is used for being connected in parallel with any bridge arm of the Wheatstone bridge;
wherein the bridge module (21) is provided with a contact a, a contact b, a contact c and a contact d, wherein the contact a is electrically connected to one end of the third resistor R3 far away from the fourth resistor R4, the contact b is electrically connected to one end of the second resistor R2 far away from the fourth resistor R4, the contact c is electrically connected to a connection node of the second resistor R2 and the fourth resistor R4, and the contact d is electrically connected to a connection node of the fourth resistor R4 and the third resistor R3;
The two ends of the resistance correction module (24) are provided with a contact e and a contact f which are used for being connected with a contact a, a contact b, a contact c or a contact d;
the resistance correction module (24) further comprises a switch S1, and the switch S1 is connected in series with the adjustable resistor R5;
wherein, the load cell correction system based on wireless transmission still includes:
the signal conversion module (4) is electrically connected with the force measuring circuit (2) and is used for converting signals input/output to the force measuring circuit (2);
and the data transmission modules (5) are electrically connected with the signal conversion module (4) and the control module (3), and the data transmission modules (5) are connected with each other through wireless signals.
2. The method for calibrating a load cell based on wireless transmission according to claim 1, wherein the acquiring the resistance detection value of each bridge resistor comprises:
determining a target resistor from the bridge resistors in sequence, generating a self-checking target instruction and sending the self-checking target instruction to a control module and a resistance correction module;
Measuring a first detection value of a target resistor when the resistance correction module is in an off state, and measuring a second detection value group of the target resistor when the resistance correction module is in an on state, wherein a plurality of detection values in the second detection value group correspond to a plurality of resistance values of the resistance correction module;
and calculating a resistance detection value based on the first detection value and the second detection value group, wherein the resistance detection value is the average value of all detection values in the first detection value and the second detection value group.
3. The calibration method of a load cell based on wireless transmission according to claim 2, wherein the calculating of the deviation ratio of the resistance values of the bridge resistors is based on the resistance detection values and the corresponding resistance standard values:
resistance value deviation ratio = i resistance detection value-resistance standard value i ≡resistance standard value x 100%.
4. The wireless transmission-based load cell correction method of claim 2, further comprising:
when a resistance value compensation instruction is triggered, determining a resistor to be compensated, and acquiring a resistance detection value of the resistor to be compensated;
and calculating a resistance value to be compensated corresponding to the resistor to be compensated, and calculating a resistance compensation value based on the resistance detection value and the resistance value to be compensated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311148796.0A CN116878729B (en) | 2023-09-07 | 2023-09-07 | Force transducer correction system and method based on wireless transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311148796.0A CN116878729B (en) | 2023-09-07 | 2023-09-07 | Force transducer correction system and method based on wireless transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116878729A CN116878729A (en) | 2023-10-13 |
| CN116878729B true CN116878729B (en) | 2023-12-26 |
Family
ID=88259145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311148796.0A Active CN116878729B (en) | 2023-09-07 | 2023-09-07 | Force transducer correction system and method based on wireless transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116878729B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114216489A (en) * | 2021-12-22 | 2022-03-22 | 欧梯恩智能科技(苏州)有限公司 | Modular optical sensing demodulation system and demodulation method |
| WO2022199713A1 (en) * | 2021-03-25 | 2022-09-29 | Mettler-Toledo (Changzhou) Precision Instruments Ltd. | Digital load cell and weighing system |
| CN115931163A (en) * | 2022-12-13 | 2023-04-07 | 中国原子能科学研究院 | Resistance Measuring Circuit and Temperature Measuring System Based on Wheatstone Bridge |
| CN116412948A (en) * | 2023-02-06 | 2023-07-11 | 广州市市政工程试验检测有限公司 | Ultrathin force transducer, preparation method, monitoring system, monitoring method and application |
-
2023
- 2023-09-07 CN CN202311148796.0A patent/CN116878729B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022199713A1 (en) * | 2021-03-25 | 2022-09-29 | Mettler-Toledo (Changzhou) Precision Instruments Ltd. | Digital load cell and weighing system |
| CN114216489A (en) * | 2021-12-22 | 2022-03-22 | 欧梯恩智能科技(苏州)有限公司 | Modular optical sensing demodulation system and demodulation method |
| CN115931163A (en) * | 2022-12-13 | 2023-04-07 | 中国原子能科学研究院 | Resistance Measuring Circuit and Temperature Measuring System Based on Wheatstone Bridge |
| CN116412948A (en) * | 2023-02-06 | 2023-07-11 | 广州市市政工程试验检测有限公司 | Ultrathin force transducer, preparation method, monitoring system, monitoring method and application |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116878729A (en) | 2023-10-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4506606B2 (en) | Voltage detection device for battery pack | |
| CN107063523B (en) | Electronic circuit, load cell, load detection device, and vehicle including the same | |
| EP3185024B1 (en) | Current transformer with enhanced temperature measurement functions | |
| CN109596860B (en) | Accelerometer fault diagnosis method, device, circuit and computer equipment | |
| CN108738353B (en) | Aging detector for circuit components, method, component and control device for monitoring the aging of circuit components | |
| US20180003745A1 (en) | Method for diagnosing state of capacitor in modular converter | |
| KR20150043162A (en) | Apparatus and method for real time monitoring of sulfur hexaflouride gas | |
| CN116878729B (en) | Force transducer correction system and method based on wireless transmission | |
| EP3199933B1 (en) | Load cell input unit | |
| JP5778377B2 (en) | Life detection device and life detection method | |
| US9417150B2 (en) | Pressure transmitter for measuring the pressure of a process fluid and related method | |
| CN101400593B (en) | Method for measuring the tensile strength of a moving web | |
| EP4168816A1 (en) | Battery soh determination circuit | |
| CN111413564B (en) | Supercapacitor failure early warning method, system and equipment | |
| KR102015499B1 (en) | System for correcting error | |
| JP2022509721A (en) | Methods and equipment for monitoring semiconductor connections in power modules | |
| US20220182051A1 (en) | DC Switch | |
| CN111751775A (en) | Method and device for detecting current sampling failure | |
| CN115729756A (en) | Test-accompanied hard disk, and method and system for test-accompanied server based on test-accompanied hard disk | |
| CN116106815B (en) | Method and system for reducing measurement error of current transformer | |
| CN114566949A (en) | Sensitive impedance-based string protection for multi-string and multi-stage capacitor banks | |
| JP6914713B2 (en) | Power system monitoring device and power system monitoring method | |
| CN218068220U (en) | Floating VI source board card alarm device and system | |
| EP1645026B1 (en) | Electric motor movement controlling method and electric motor movement controlling system | |
| CN112829586A (en) | Method and device for monitoring fuse and electric automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |