CN112114166A - Hybrid topology type accelerometer calibration system - Google Patents
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- CN112114166A CN112114166A CN202011113655.1A CN202011113655A CN112114166A CN 112114166 A CN112114166 A CN 112114166A CN 202011113655 A CN202011113655 A CN 202011113655A CN 112114166 A CN112114166 A CN 112114166A
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Abstract
The invention relates to an accelerometer calibration technology, in particular to a hybrid topology type accelerometer calibration system. The invention solves the problem that the existing accelerometer calibration system lacks a reasonable network topology structure and a quick and efficient transmission medium. A mixed topology type accelerometer calibration system comprises a terminal part and a transmission medium part; the terminal part comprises three accelerometers to be measured, three standard accelerometers, six vibration speed sensors, three temperature sensors, three humidity sensors, three air pressure sensors, three magnetic field sensors, nine wireless APs, two differential amplifiers, two sigma-delta analog-to-digital converters, two digital extraction filters, three data isolators, a data acquisition unit, a servo amplifier, a baseline correction module, a storage server, a disk array, a PC (personal computer), three vibration exciters, three signal generators and three vibration tables. The invention is suitable for accelerometer calibration.
Description
Technical Field
The invention relates to an accelerometer calibration technology, in particular to a hybrid topology type accelerometer calibration system.
Background
Calibration of accelerometers is an important part of the design, manufacture and use of accelerometers. Currently, accelerometer calibration is mainly realized by an accelerometer calibration system. Under the prior art, the accelerometer calibration system is limited by the structure thereof, and generally lacks a reasonable network topology structure and a quick and efficient transmission medium, so that the problems of unstable data transmission and poor data transmission real-time performance are generally caused, and the reliability of the calibration process is directly influenced. Therefore, a hybrid topology type accelerometer calibration system needs to be invented to solve the problem that the existing accelerometer calibration system lacks a reasonable network topology structure and a quick and efficient transmission medium.
Disclosure of Invention
The invention provides a mixed topology type accelerometer calibration system, aiming at solving the problems that the existing accelerometer calibration system is lack of a reasonable network topology structure and a quick and efficient transmission medium.
The invention is realized by adopting the following technical scheme:
a mixed topology type accelerometer calibration system comprises a terminal part and a transmission medium part;
the terminal part comprises three accelerometers to be measured, three standard accelerometers, six vibration speed sensors, three temperature sensors, three humidity sensors, three air pressure sensors, three magnetic field sensors, nine wireless APs, two differential amplifiers, two sigma-delta analog-to-digital converters, two digital extraction filters, three data isolators, a data acquisition unit, a servo amplifier, a baseline correction module, a storage server, a disk array, a PC (personal computer), three vibration exciters, three signal generators and three vibration tables;
the transmission medium part comprises a coaxial cable, a microwave channel, an RS485 bus, first to third CAN buses and first to third PROFIBUS buses;
output shafts of the three vibration exciters are connected with the three vibration tables in a one-to-one correspondence manner; the first accelerometer to be tested and the first standard accelerometer are both fixed on the table surface of the first vibration table, and the X axis of the first accelerometer to be tested and the X axis of the first standard accelerometer are both parallel to the output shaft of the first vibration exciter; the second accelerometer to be tested and the second standard accelerometer are both fixed on the table surface of the second vibration table, and the Y axis of the second accelerometer to be tested and the Y axis of the second standard accelerometer are both parallel to the output shaft of the second vibration exciter; the third accelerometer to be tested and the third standard accelerometer are both fixed on the table surface of the third vibration table, and the Z axis of the third accelerometer to be tested and the Z axis of the third standard accelerometer are both parallel to the output shaft of the third vibration exciter; the first vibration speed sensor and the second vibration speed sensor are both fixed on the table top of the first vibration table; the third vibration speed sensor and the fourth vibration speed sensor are fixed on the table top of the second vibration table; the fifth vibration speed sensor and the sixth vibration speed sensor are fixed on the table top of the third vibration table; the first temperature sensor, the first humidity sensor, the first air pressure sensor and the first magnetic field sensor are all fixed on the table top of the first vibrating table; the second temperature sensor, the second humidity sensor, the second air pressure sensor and the second magnetic field sensor are all fixed on the table top of the second vibrating table; the third temperature sensor, the third humidity sensor, the third air pressure sensor and the third magnetic field sensor are all fixed on the table top of the third vibrating table;
the three accelerometers to be tested are correspondingly connected with the first wireless AP, the third wireless AP and the fifth wireless AP one by one through coaxial cables; the three standard accelerometers are correspondingly connected with the second wireless AP, the fourth wireless AP and the sixth wireless AP one by one through coaxial cables; the first to seventh wireless APs are in head-to-tail wireless connection through microwave channels to form a ring-shaped topological structure; the first vibration speed sensor, the third vibration speed sensor and the fifth vibration speed sensor are all connected with the eighth wireless AP through coaxial cables, the second vibration speed sensor, the fourth vibration speed sensor and the sixth vibration speed sensor are all connected with the ninth wireless AP through coaxial cables, and the eighth wireless AP is wirelessly connected with the ninth wireless AP through a microwave channel; the six vibration speed sensors jointly form branches of the tree-shaped topological structure, and the eighth wireless AP and the ninth wireless AP jointly form a trunk of the tree-shaped topological structure; the seventh wireless AP, the ninth wireless AP and the two differential amplifiers are all connected with the RS485 bus, and the seventh wireless AP, the ninth wireless AP, the two differential amplifiers and the RS485 bus form a bus type topological structure together; the first differential amplifier is connected with the first sigma-delta analog-to-digital converter through a coaxial cable; the first sigma-delta analog-to-digital converter is connected with the first digital decimation filter through a coaxial cable; the first digital decimation filter is connected with the first data isolator through a coaxial cable; the first data isolator is connected with the data acquisition unit through a coaxial cable; the second differential amplifier is connected with the second sigma-delta analog-to-digital converter through a coaxial cable; the second sigma-delta analog-to-digital converter is connected with the second digital decimation filter through a coaxial cable; the second digital decimation filter is connected with the second data isolator through a coaxial cable; the second data isolator is connected with the servo amplifier through a coaxial cable;
the first temperature sensor, the first humidity sensor, the first air pressure sensor, the first magnetic field sensor and the third data isolator are all connected with the first CAN bus, and the first temperature sensor, the first humidity sensor, the first air pressure sensor, the first magnetic field sensor, the third data isolator and the first CAN bus form a bus type topological structure together; the second temperature sensor, the second humidity sensor, the second air pressure sensor, the second magnetic field sensor and the third data isolator are all connected with a second CAN bus, and the second temperature sensor, the second humidity sensor, the second air pressure sensor, the second magnetic field sensor, the third data isolator and the second CAN bus form a bus type topological structure; the third temperature sensor, the third humidity sensor, the third air pressure sensor, the third magnetic field sensor and the third data isolator are all connected with a third CAN bus, and the third temperature sensor, the third humidity sensor, the third air pressure sensor, the third magnetic field sensor, the third data isolator and the third CAN bus form a bus type topological structure together; the third data isolator is connected with the data acquisition unit through a coaxial cable;
the data acquisition device, the baseline correction module, the storage server, the disk array and the PC are all connected with the first PROFIBUS bus, and the data acquisition device, the baseline correction module, the storage server, the disk array, the PC and the first PROFIBUS bus form a bus type topological structure together; the data collector, the servo amplifier, the three vibration exciters and the second PROFIBUS bus form a bus type topological structure; the servo amplifier, the three signal generators and the third PROFIBUS bus form a bus type topological structure together.
When the system works, the three signal generators respectively generate one driving signal, and the three driving signals are all sent to the third PROFIBUS bus in real time. The servo amplifier accesses the third PROFIBUS bus in real time and obtains three driving signals, and then sends the three driving signals to the second PROFIBUS bus in real time. The three vibration exciters access the second PROFIBUS bus in real time and acquire three driving signals in a one-to-one correspondence mode. Under the drive of three paths of driving signals, output shafts of three vibration exciters vibrate, the output shaft of the first vibration exciter drives a first vibrating table, a first tested accelerometer and a first standard accelerometer to vibrate along the X-axis direction, the output shaft of the second vibration exciter drives a second vibrating table, a second tested accelerometer and a second standard accelerometer to vibrate along the Y-axis direction, and the output shaft of the third vibration exciter drives a third vibrating table, a third tested accelerometer and a third standard accelerometer to vibrate along the Z-axis direction.
In the vibration process, the three accelerometers to be tested respectively output one path of acceleration data, the three paths of acceleration data are firstly transmitted to the first wireless AP, the third wireless AP and the fifth wireless AP in a one-to-one correspondence mode through coaxial cables, and then are wirelessly transmitted to the seventh wireless AP in real time through a microwave channel. The three standard accelerometers respectively output one path of acceleration data, the three paths of acceleration data are firstly sent to the second wireless AP, the fourth wireless AP and the sixth wireless AP in a one-to-one correspondence mode through coaxial cables, and then are sent to the seventh wireless AP in a wireless mode through a microwave channel. And the seventh wireless AP sends the six-path acceleration data to the RS485 bus in real time. The first differential amplifier firstly accesses the RS485 bus in real time and obtains six paths of acceleration data, then amplifies the six paths of acceleration data, and then sends the six paths of acceleration data to the first sigma-delta analog-to-digital converter in real time through the coaxial cable. The first sigma-delta analog-to-digital converter performs analog-to-digital conversion on the six-way acceleration data, and then sends the six-way acceleration data to the first digital decimation filter in real time through the coaxial cable. The first digital decimation filter performs decimation filtering on the six-path acceleration data, and then transmits the six-path acceleration data to the first data isolator in real time through the coaxial cable. The first data isolator is used for carrying out data isolation on the six-path acceleration data, and then the six-path acceleration data are sent to the data acquisition unit in real time through the coaxial cable. The three temperature sensors correspondingly acquire the environmental temperature data of the three vibration tables in real time one by one, and correspondingly send the environmental temperature data of the three vibration tables to the first CAN bus to the third CAN bus in real time one by one. The three humidity sensors collect the environmental humidity data of the three vibration tables in real time in a one-to-one correspondence manner, and send the environmental humidity data of the three vibration tables to the first CAN bus to the third CAN bus in real time in a one-to-one correspondence manner. The three air pressure sensors correspondingly acquire the environmental air pressure data of the three vibrating tables in real time one by one and send the environmental air pressure data of the three vibrating tables to the first CAN bus to the third CAN bus in real time one by one. The three magnetic field sensors correspondingly acquire the environmental magnetic field data of the three vibration tables in real time one by one, and correspondingly send the environmental magnetic field data of the three vibration tables to the first CAN bus to the third CAN bus in real time one by one. The third data isolator firstly accesses the first CAN bus to the third CAN bus in real time and obtains the environmental data (environmental temperature data, environmental humidity data, environmental air pressure data and environmental magnetic field data) of the three vibration tables, then carries out data isolation on the environmental data of the three vibration tables, and then sends the environmental data of the three vibration tables to the data acquisition unit in real time through the coaxial cable. And the data acquisition unit transmits the six paths of acceleration data and the environmental data of the three vibration tables to a first PROFIBUS bus in real time. The base line correction module firstly accesses the first PROFIBUS bus in real time and obtains six paths of acceleration data and environmental data of the three vibration tables, then carries out base line correction on the six paths of acceleration data according to the environmental data of the three vibration tables, and then sends the six paths of acceleration data after base line correction to the first PROFIBUS bus in real time. The storage server accesses the first PROFIBUS bus in real time and obtains six paths of acceleration data after baseline correction, and then stores the six paths of acceleration data after baseline correction in real time. The disk array accesses the first PROFIBUS bus in real time and obtains six paths of acceleration data after baseline correction, and then the six paths of acceleration data after baseline correction are backed up in real time. The PC machine accesses the first PROFIBUS bus in real time and obtains six paths of acceleration data after baseline correction, then compares the six paths of acceleration data after baseline correction in real time (compares the acceleration data output by the first tested accelerometer with the acceleration data output by the first standard accelerometer in real time, compares the acceleration data output by the second tested accelerometer with the acceleration data output by the second standard accelerometer in real time, and compares the acceleration data output by the third tested accelerometer with the acceleration data output by the third standard accelerometer in real time), and displays the comparison result in real time. According to the displayed comparison result, the X-axis calibration of the first accelerometer to be tested, the Y-axis calibration of the second accelerometer to be tested and the Z-axis calibration of the third accelerometer to be tested can be realized.
Meanwhile, the first vibration speed sensor, the third vibration speed sensor and the fifth vibration speed sensor correspondingly acquire the vibration speed data of the three vibration tables in real time one by one, and transmit the vibration speed data of the three vibration tables to the eighth wireless AP in real time through the coaxial cable. And the eighth wireless AP wirelessly transmits the vibration speed data of the three vibration tables to the ninth wireless AP in real time through a microwave channel. The second vibration speed sensor, the fourth vibration speed sensor and the sixth vibration speed sensor correspondingly acquire the vibration speed data of the three vibration tables in real time one by one, and the vibration speed data of the three vibration tables are sent to the ninth wireless AP in real time through the coaxial cables. And the ninth wireless AP sends the vibration speed data of the three vibration tables to the RS485 bus in real time. The second differential amplifier firstly accesses the RS485 bus in real time and obtains vibration speed data of the three vibration tables, then amplifies the vibration speed data of the three vibration tables, and then sends the vibration speed data of the three vibration tables to the second sigma-delta analog-to-digital converter in real time through the coaxial cable. And the second sigma-delta analog-to-digital converter performs analog-to-digital conversion on the vibration speed data of the three vibration tables, and then sends the vibration speed data of the three vibration tables to the second digital decimation filter in real time through the coaxial cable. And the second digital decimation filter performs decimation filtering on the vibration speed data of the three vibration tables, and then sends the vibration speed data of the three vibration tables to the second data isolator in real time through the coaxial cable. And the second data isolator is used for carrying out data isolation on the vibration speed data of the three vibration tables and then sending the vibration speed data of the three vibration tables to the servo amplifier in real time through the coaxial cable. The servo amplifier sends the vibration speed data of the three vibration tables to the second PROFIBUS bus in real time on one hand, and superposes the vibration speed data of the three vibration tables and the three driving signals in real time on the other hand, and sends the superposed three signals to the second PROFIBUS bus in real time. The data acquisition unit accesses the second PROFIBUS bus in real time and acquires the vibration speed data of the three vibration tables, and then sends the vibration speed data of the three vibration tables to the first PROFIBUS bus in real time. The storage server accesses the first PROFIBUS bus in real time and obtains vibration speed data of the three vibration tables, and then stores the vibration speed data of the three vibration tables in real time. The disk array accesses the first PROFIBUS bus in real time and obtains vibration speed data of the three vibration tables, and then the vibration speed data of the three vibration tables are backed up in real time. The PC machine accesses the first PROFIBUS bus in real time and obtains vibration speed data of the three vibration tables, and then displays the vibration speed data of the three vibration tables in real time. The three vibration exciters access the second PROFIBUS bus in real time and acquire three paths of signals obtained by superposition in a one-to-one correspondence mode, and therefore closed-loop control is achieved.
Based on the process, compared with the existing accelerometer calibration system, the hybrid topology type accelerometer calibration system provided by the invention has the following advantages by adopting a brand new structure: firstly, the invention comprehensively adopts a ring type topological structure, a tree type topological structure and a bus type topological structure, wherein the advantages of no path selection problem, simple control protocol, simple structure, only simple connection operation when increasing or reducing nodes, less transmission media and fixed transmission time are achieved on one hand by utilizing the ring type topological structure, the advantages of easy expansion and easier fault isolation are achieved on the other hand by utilizing the tree type topological structure, and the advantages of simple structure, less transmission media, no central node, no whole network paralysis caused by the fault of any node, high reliability and easy expansion are achieved on the third hand by utilizing the bus type topological structure, so that the data transmission is more stable, the real-time performance of the data transmission is stronger, and the reliability of the calibration process is effectively ensured. Secondly, the invention adopts the coaxial cable and the microwave channel as the transmission medium, on one hand, the coaxial cable has the advantages of good shielding property, long transmission distance, high bandwidth and good noise suppression property, on the other hand, the microwave channel has the advantages of mature modulation technology, large communication capacity, wide transmission frequency band, strong anti-interference property, low cost, convenient and flexible installation and no geographical range restriction, and has the rapid and efficient transmission medium, thereby further ensuring more stable data transmission and stronger real-time property of data transmission, and further effectively ensuring the reliability of the calibration process.
The accelerometer calibration system is reasonable in structure and ingenious in design, effectively solves the problem that an existing accelerometer calibration system lacks a reasonable network topology structure and a quick and efficient transmission medium, and is suitable for accelerometer calibration.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
A mixed topology type accelerometer calibration system comprises a terminal part and a transmission medium part;
the terminal part comprises three accelerometers to be measured, three standard accelerometers, six vibration speed sensors, three temperature sensors, three humidity sensors, three air pressure sensors, three magnetic field sensors, nine wireless APs, two differential amplifiers, two sigma-delta analog-to-digital converters, two digital extraction filters, three data isolators, a data acquisition unit, a servo amplifier, a baseline correction module, a storage server, a disk array, a PC (personal computer), three vibration exciters, three signal generators and three vibration tables;
the transmission medium part comprises a coaxial cable, a microwave channel, an RS485 bus, first to third CAN buses and first to third PROFIBUS buses;
output shafts of the three vibration exciters are connected with the three vibration tables in a one-to-one correspondence manner; the first accelerometer to be tested and the first standard accelerometer are both fixed on the table surface of the first vibration table, and the X axis of the first accelerometer to be tested and the X axis of the first standard accelerometer are both parallel to the output shaft of the first vibration exciter; the second accelerometer to be tested and the second standard accelerometer are both fixed on the table surface of the second vibration table, and the Y axis of the second accelerometer to be tested and the Y axis of the second standard accelerometer are both parallel to the output shaft of the second vibration exciter; the third accelerometer to be tested and the third standard accelerometer are both fixed on the table surface of the third vibration table, and the Z axis of the third accelerometer to be tested and the Z axis of the third standard accelerometer are both parallel to the output shaft of the third vibration exciter; the first vibration speed sensor and the second vibration speed sensor are both fixed on the table top of the first vibration table; the third vibration speed sensor and the fourth vibration speed sensor are fixed on the table top of the second vibration table; the fifth vibration speed sensor and the sixth vibration speed sensor are fixed on the table top of the third vibration table; the first temperature sensor, the first humidity sensor, the first air pressure sensor and the first magnetic field sensor are all fixed on the table top of the first vibrating table; the second temperature sensor, the second humidity sensor, the second air pressure sensor and the second magnetic field sensor are all fixed on the table top of the second vibrating table; the third temperature sensor, the third humidity sensor, the third air pressure sensor and the third magnetic field sensor are all fixed on the table top of the third vibrating table;
the three accelerometers to be tested are correspondingly connected with the first wireless AP, the third wireless AP and the fifth wireless AP one by one through coaxial cables; the three standard accelerometers are correspondingly connected with the second wireless AP, the fourth wireless AP and the sixth wireless AP one by one through coaxial cables; the first to seventh wireless APs are in head-to-tail wireless connection through microwave channels to form a ring-shaped topological structure; the first vibration speed sensor, the third vibration speed sensor and the fifth vibration speed sensor are all connected with the eighth wireless AP through coaxial cables, the second vibration speed sensor, the fourth vibration speed sensor and the sixth vibration speed sensor are all connected with the ninth wireless AP through coaxial cables, and the eighth wireless AP is wirelessly connected with the ninth wireless AP through a microwave channel; the six vibration speed sensors jointly form branches of the tree-shaped topological structure, and the eighth wireless AP and the ninth wireless AP jointly form a trunk of the tree-shaped topological structure; the seventh wireless AP, the ninth wireless AP and the two differential amplifiers are all connected with the RS485 bus, and the seventh wireless AP, the ninth wireless AP, the two differential amplifiers and the RS485 bus form a bus type topological structure together; the first differential amplifier is connected with the first sigma-delta analog-to-digital converter through a coaxial cable; the first sigma-delta analog-to-digital converter is connected with the first digital decimation filter through a coaxial cable; the first digital decimation filter is connected with the first data isolator through a coaxial cable; the first data isolator is connected with the data acquisition unit through a coaxial cable; the second differential amplifier is connected with the second sigma-delta analog-to-digital converter through a coaxial cable; the second sigma-delta analog-to-digital converter is connected with the second digital decimation filter through a coaxial cable; the second digital decimation filter is connected with the second data isolator through a coaxial cable; the second data isolator is connected with the servo amplifier through a coaxial cable;
the first temperature sensor, the first humidity sensor, the first air pressure sensor, the first magnetic field sensor and the third data isolator are all connected with the first CAN bus, and the first temperature sensor, the first humidity sensor, the first air pressure sensor, the first magnetic field sensor, the third data isolator and the first CAN bus form a bus type topological structure together; the second temperature sensor, the second humidity sensor, the second air pressure sensor, the second magnetic field sensor and the third data isolator are all connected with a second CAN bus, and the second temperature sensor, the second humidity sensor, the second air pressure sensor, the second magnetic field sensor, the third data isolator and the second CAN bus form a bus type topological structure; the third temperature sensor, the third humidity sensor, the third air pressure sensor, the third magnetic field sensor and the third data isolator are all connected with a third CAN bus, and the third temperature sensor, the third humidity sensor, the third air pressure sensor, the third magnetic field sensor, the third data isolator and the third CAN bus form a bus type topological structure together; the third data isolator is connected with the data acquisition unit through a coaxial cable;
the data acquisition device, the baseline correction module, the storage server, the disk array and the PC are all connected with the first PROFIBUS bus, and the data acquisition device, the baseline correction module, the storage server, the disk array, the PC and the first PROFIBUS bus form a bus type topological structure together; the data collector, the servo amplifier, the three vibration exciters and the second PROFIBUS bus form a bus type topological structure; the servo amplifier, the three signal generators and the third PROFIBUS bus form a bus type topological structure together.
In specific implementation, the temperature sensor is a digital temperature sensor; the humidity sensor adopts a digital humidity sensor; the air pressure sensor adopts a digital air pressure sensor; the magnetic field sensor adopts a digital magnetic field sensor; the differential amplifier adopts a low-noise and programmable-gain dual-channel differential amplifier; the sigma-delta analog-to-digital converter adopts a 24-bit sigma-delta analog-to-digital converter with high precision and multi-resolution; the digital decimation filter adopts a single-channel digital decimation filter with low power consumption; the coaxial cable adopts a baseband coaxial cable.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (2)
1. A mixed topology type accelerometer calibration system is characterized in that: comprising a terminal portion and a transmission medium portion;
the terminal part comprises three accelerometers to be measured, three standard accelerometers, six vibration speed sensors, three temperature sensors, three humidity sensors, three air pressure sensors, three magnetic field sensors, nine wireless APs, two differential amplifiers, two sigma-delta analog-to-digital converters, two digital extraction filters, three data isolators, a data acquisition unit, a servo amplifier, a baseline correction module, a storage server, a disk array, a PC (personal computer), three vibration exciters, three signal generators and three vibration tables;
the transmission medium part comprises a coaxial cable, a microwave channel, an RS485 bus, first to third CAN buses and first to third PROFIBUS buses;
output shafts of the three vibration exciters are connected with the three vibration tables in a one-to-one correspondence manner; the first accelerometer to be tested and the first standard accelerometer are both fixed on the table surface of the first vibration table, and the X axis of the first accelerometer to be tested and the X axis of the first standard accelerometer are both parallel to the output shaft of the first vibration exciter; the second accelerometer to be tested and the second standard accelerometer are both fixed on the table surface of the second vibration table, and the Y axis of the second accelerometer to be tested and the Y axis of the second standard accelerometer are both parallel to the output shaft of the second vibration exciter; the third accelerometer to be tested and the third standard accelerometer are both fixed on the table surface of the third vibration table, and the Z axis of the third accelerometer to be tested and the Z axis of the third standard accelerometer are both parallel to the output shaft of the third vibration exciter; the first vibration speed sensor and the second vibration speed sensor are both fixed on the table top of the first vibration table; the third vibration speed sensor and the fourth vibration speed sensor are fixed on the table top of the second vibration table; the fifth vibration speed sensor and the sixth vibration speed sensor are fixed on the table top of the third vibration table; the first temperature sensor, the first humidity sensor, the first air pressure sensor and the first magnetic field sensor are all fixed on the table top of the first vibrating table; the second temperature sensor, the second humidity sensor, the second air pressure sensor and the second magnetic field sensor are all fixed on the table top of the second vibrating table; the third temperature sensor, the third humidity sensor, the third air pressure sensor and the third magnetic field sensor are all fixed on the table top of the third vibrating table;
the three accelerometers to be tested are correspondingly connected with the first wireless AP, the third wireless AP and the fifth wireless AP one by one through coaxial cables; the three standard accelerometers are correspondingly connected with the second wireless AP, the fourth wireless AP and the sixth wireless AP one by one through coaxial cables; the first to seventh wireless APs are in head-to-tail wireless connection through microwave channels to form a ring-shaped topological structure; the first vibration speed sensor, the third vibration speed sensor and the fifth vibration speed sensor are all connected with the eighth wireless AP through coaxial cables, the second vibration speed sensor, the fourth vibration speed sensor and the sixth vibration speed sensor are all connected with the ninth wireless AP through coaxial cables, and the eighth wireless AP is wirelessly connected with the ninth wireless AP through a microwave channel; the six vibration speed sensors jointly form branches of the tree-shaped topological structure, and the eighth wireless AP and the ninth wireless AP jointly form a trunk of the tree-shaped topological structure; the seventh wireless AP, the ninth wireless AP and the two differential amplifiers are all connected with the RS485 bus, and the seventh wireless AP, the ninth wireless AP, the two differential amplifiers and the RS485 bus form a bus type topological structure together; the first differential amplifier is connected with the first sigma-delta analog-to-digital converter through a coaxial cable; the first sigma-delta analog-to-digital converter is connected with the first digital decimation filter through a coaxial cable; the first digital decimation filter is connected with the first data isolator through a coaxial cable; the first data isolator is connected with the data acquisition unit through a coaxial cable; the second differential amplifier is connected with the second sigma-delta analog-to-digital converter through a coaxial cable; the second sigma-delta analog-to-digital converter is connected with the second digital decimation filter through a coaxial cable; the second digital decimation filter is connected with the second data isolator through a coaxial cable; the second data isolator is connected with the servo amplifier through a coaxial cable;
the first temperature sensor, the first humidity sensor, the first air pressure sensor, the first magnetic field sensor and the third data isolator are all connected with the first CAN bus, and the first temperature sensor, the first humidity sensor, the first air pressure sensor, the first magnetic field sensor, the third data isolator and the first CAN bus form a bus type topological structure together; the second temperature sensor, the second humidity sensor, the second air pressure sensor, the second magnetic field sensor and the third data isolator are all connected with a second CAN bus, and the second temperature sensor, the second humidity sensor, the second air pressure sensor, the second magnetic field sensor, the third data isolator and the second CAN bus form a bus type topological structure; the third temperature sensor, the third humidity sensor, the third air pressure sensor, the third magnetic field sensor and the third data isolator are all connected with a third CAN bus, and the third temperature sensor, the third humidity sensor, the third air pressure sensor, the third magnetic field sensor, the third data isolator and the third CAN bus form a bus type topological structure together; the third data isolator is connected with the data acquisition unit through a coaxial cable;
the data acquisition device, the baseline correction module, the storage server, the disk array and the PC are all connected with the first PROFIBUS bus, and the data acquisition device, the baseline correction module, the storage server, the disk array, the PC and the first PROFIBUS bus form a bus type topological structure together; the data collector, the servo amplifier, the three vibration exciters and the second PROFIBUS bus form a bus type topological structure; the servo amplifier, the three signal generators and the third PROFIBUS bus form a bus type topological structure together.
2. The system for calibrating an accelerometer having a hybrid topology according to claim 1, wherein: the temperature sensor adopts a digital temperature sensor; the humidity sensor adopts a digital humidity sensor; the air pressure sensor adopts a digital air pressure sensor; the magnetic field sensor adopts a digital magnetic field sensor; the differential amplifier adopts a low-noise and programmable-gain dual-channel differential amplifier; the sigma-delta analog-to-digital converter adopts a 24-bit sigma-delta analog-to-digital converter with high precision and multi-resolution; the digital decimation filter adopts a single-channel digital decimation filter with low power consumption; the coaxial cable adopts a baseband coaxial cable.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991010118A1 (en) * | 1989-12-28 | 1991-07-11 | Wacoh Corporation | Apparatus for detecting physical quantity that acts as external force and method of testing and producing this apparatus |
| DE102004021648A1 (en) * | 2004-05-03 | 2005-12-01 | Bayerische Motoren Werke Ag | Inhibiting noise influence of acceleration-dependent sensor signal in motor vehicle involves detecting sensor signal and noise signal(s) produced by vibrations in vehicle structure, combining signals to form cleaned up sensor signal |
| CN103048013A (en) * | 2012-12-25 | 2013-04-17 | 中北大学 | Automatic loading platform of micro-nano sensor under variable environment |
| CN207472316U (en) * | 2017-12-05 | 2018-06-08 | 薄慧强 | A kind of microwave type Geological Hazards Monitoring device |
| CN210465476U (en) * | 2019-08-19 | 2020-05-05 | 中车长春轨道客车股份有限公司 | Acceleration sensor calibration system |
| CN210865076U (en) * | 2020-02-21 | 2020-06-26 | 胡方明 | Oil-break protection device of screw air compressor for coal mine |
-
2020
- 2020-10-17 CN CN202011113655.1A patent/CN112114166A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1991010118A1 (en) * | 1989-12-28 | 1991-07-11 | Wacoh Corporation | Apparatus for detecting physical quantity that acts as external force and method of testing and producing this apparatus |
| DE102004021648A1 (en) * | 2004-05-03 | 2005-12-01 | Bayerische Motoren Werke Ag | Inhibiting noise influence of acceleration-dependent sensor signal in motor vehicle involves detecting sensor signal and noise signal(s) produced by vibrations in vehicle structure, combining signals to form cleaned up sensor signal |
| CN103048013A (en) * | 2012-12-25 | 2013-04-17 | 中北大学 | Automatic loading platform of micro-nano sensor under variable environment |
| CN207472316U (en) * | 2017-12-05 | 2018-06-08 | 薄慧强 | A kind of microwave type Geological Hazards Monitoring device |
| CN210465476U (en) * | 2019-08-19 | 2020-05-05 | 中车长春轨道客车股份有限公司 | Acceleration sensor calibration system |
| CN210865076U (en) * | 2020-02-21 | 2020-06-26 | 胡方明 | Oil-break protection device of screw air compressor for coal mine |
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