CN116125960B - Comprehensive verification equipment of motor-driven calibration vehicle - Google Patents
Comprehensive verification equipment of motor-driven calibration vehicle Download PDFInfo
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- CN116125960B CN116125960B CN202310304880.0A CN202310304880A CN116125960B CN 116125960 B CN116125960 B CN 116125960B CN 202310304880 A CN202310304880 A CN 202310304880A CN 116125960 B CN116125960 B CN 116125960B
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- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
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Abstract
The invention discloses comprehensive verification equipment of a motor-driven calibration verification vehicle, and relates to the technical field of test systems. The comprehensive verification equipment comprises a zero slot controller positioned in the shock absorption reinforcement chassis, wherein the zero slot controller is respectively connected with a KVM display and control terminal and a GPIB/multifunctional serial gateway outside the shock absorption reinforcement chassis in a two-way manner; the zero slot controller is in bidirectional connection with a PXI/PXIe machine case in the shock absorption reinforcement machine case, the PXI/PXIe machine case is in bidirectional connection with a universal test interface through a matrix switch module, a static DIO module, a dynamic DSR module, a multifunctional acquisition module, a digital multimeter module, an audio analysis module and a radio frequency switch module respectively, the universal test interface is in bidirectional connection with a metering adapter, and the metering adapter is used for connecting a tested unit. The device can conveniently complete verification work of various weaponry, is convenient to use and has various functions.
Description
Technical Field
The invention relates to the technical field of test systems, in particular to comprehensive verification equipment of a motor-driven calibration verification vehicle.
Background
At present, various measuring instruments and control devices are used in military equipment or civil equipment, and measurement or control inaccuracy and poor stability are caused by long-time use of the measuring instruments and control devices, so that periodic verification and calibration work is required for the measuring instruments and control devices, so that measurement and control of related instruments and devices are more accurate, and the operation of the measuring instruments and control devices is more stable. In the prior art, the verification and calibration instrument is generally used independently, has a single function, is inconvenient to carry and use, and cannot meet the requirements of the calibration and verification functions of various equipment measuring instruments and control equipment.
Disclosure of Invention
The invention aims to solve the technical problem of providing comprehensive verification equipment which can conveniently complete verification work of various weaponry, is convenient to use and has various functions.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a comprehensive verification equipment of motor-driven calibration verification car which characterized in that: the system comprises a zero slot controller positioned in a vibration reduction reinforcement chassis, wherein the zero slot controller is respectively connected with a KVM display and control terminal and a GPIB/multifunctional serial port gateway outside the vibration reduction reinforcement chassis in a bidirectional manner; the zero slot controller is in bidirectional connection with a PXI/PXIe machine case in the shock absorption reinforcement machine case, the PXI/PXIe machine case is in bidirectional connection with a universal test interface through a matrix switch module, a static DIO module, a dynamic DSR module, a multifunctional acquisition module, a digital multimeter module, an audio analysis module and a radio frequency switch module respectively, the universal test interface is in bidirectional connection with a metering adapter, and the metering adapter is used for connecting a tested unit.
The beneficial effects of adopting above-mentioned technical scheme to produce lie in: the comprehensive verification equipment is mainly used for comprehensively integrating parameter measurement requirements of radio electronics, time frequency, electromagnetism and the like, and can meet the requirements of vehicle-mounted installation and carrying. The device can conveniently complete verification work of various weaponry, is convenient to use and has various functions.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic block diagram of a verification calibration system in an embodiment of the invention;
FIG. 2 is a schematic diagram of a shock absorbing reinforced chassis in a verification calibration system according to an embodiment of the present invention;
FIG. 3 is an exploded view of an inner frame assembly of a verification calibration system in accordance with an embodiment of the present invention;
FIG. 4 is a schematic diagram of the wiring in the chassis of the verification and calibration system according to an embodiment of the present invention;
FIG. 5 is a schematic block diagram of a zero slot controller in a comprehensive verification device according to an embodiment of the present invention;
FIG. 6 is a schematic block diagram of a matrix switch module in a comprehensive verification device according to an embodiment of the present invention;
FIG. 7 is a schematic block diagram of a static DIO module in a comprehensive verification device according to an embodiment of the invention;
FIG. 8 is a schematic diagram of the query input mode of the static DIO module in the comprehensive verification device according to an embodiment of the present invention;
FIG. 9 is a functional block diagram of a multifunctional acquisition module in a comprehensive verification device according to an embodiment of the present invention;
FIG. 10 is a timing diagram of a multi-functional acquisition module in a comprehensive verification device according to an embodiment of the present invention;
FIG. 11 is a schematic block diagram of a digital multimeter module in a comprehensive verification device according to an embodiment of the present invention;
FIG. 12 is a functional block diagram of an audio analysis module in a comprehensive verification device according to an embodiment of the present invention;
FIG. 13 is a functional block diagram of a radio frequency switch module in a comprehensive verification device in accordance with an embodiment of the present invention;
FIG. 14 is a diagram of the connection relationship between the instrument and the GPI test channels in the system according to the embodiment of the present invention;
FIG. 15 is a principal block diagram of a metering adapter in a verification calibration system in accordance with an embodiment of the present invention;
FIG. 16 is a schematic block diagram of a connection of a metering adapter in a verification calibration system in accordance with an embodiment of the invention;
FIG. 17 is a functional block diagram of a metering adapter in a system according to an embodiment of the present invention;
FIG. 18 is a circuit schematic of a core processor module in a metering adapter according to an embodiment of the invention;
FIG. 19 is a schematic diagram of a CAN bus expansion circuit in a metering adapter in accordance with an embodiment of the invention;
FIG. 20 is a schematic diagram of an RS422 bus expansion circuit in a metering adapter according to an embodiment of the invention;
FIG. 21 is a schematic diagram of an RS485 bus expansion circuit in a metering adapter according to an embodiment of the invention;
FIG. 22 is a schematic diagram of an RS232 bus expansion circuit in a metering adapter in accordance with an embodiment of the present invention;
FIG. 23 is a schematic diagram of an excitation module in a metering adapter according to an embodiment of the invention;
FIG. 24 is a schematic diagram of logic control circuitry in a metering adapter according to an embodiment of the present invention;
FIG. 25 is a schematic diagram of a network switching module in a metering adapter according to an embodiment of the present invention;
FIG. 26 is a schematic diagram of a network transformer circuit in a metering adapter in accordance with an embodiment of the present invention;
FIG. 27 is a functional block diagram of a power module in a metering adapter according to an embodiment of the present invention;
fig. 28 is a schematic view showing an external appearance structure of a metering adapter in the metering adapter according to the embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
The embodiment of the invention discloses a verification and calibration system of a motor-driven calibration and calibration vehicle, which comprises comprehensive verification equipment, general verification equipment, a metering adapter and a test cable; the universal verification equipment and the comprehensive verification equipment are mutually complemented to form a common metering verification resource platform of the motor-driven calibration verification vehicle;
the comprehensive verification equipment comprises a zero slot controller positioned in the shock absorption reinforcement chassis, wherein the zero slot controller is respectively connected with a KVM display and control terminal and a GPIB/multifunctional serial gateway outside the shock absorption reinforcement chassis in a two-way manner; the zero slot controller is in bidirectional connection with a PXI/PXIe chassis in the shock absorption reinforcement chassis, the PXI/PXIe chassis is in bidirectional connection with a universal test interface through a matrix switch module, a static DIO module, a dynamic DSR module, a multifunctional acquisition module, a digital multimeter module, an audio analysis module and a radio frequency switch module respectively, the universal test interface is in bidirectional connection with a metering adapter, and the metering adapter is used for connecting a tested unit;
the general verification equipment comprises a GPIB/multifunctional serial gateway which is connected with a general test interface in a bidirectional way through an arbitrary waveform generator, a frequency meter, a digital oscilloscope, a radio frequency signal source, a program-controlled attenuator, a frequency spectrum meter and a vector network analyzer.
The comprehensive verification equipment is mainly used for comprehensively integrating parameter measurement requirements of radio electronics, time frequency, electromagnetism and the like, and can meet the requirements of vehicle-mounted installation and carrying. The comprehensive verification equipment mainly comprises an 18-slot PXIe chassis, a PXIe zero-slot controller, a PXI board card instrument, part of general verification equipment (resource multiplexing) and general verification interfaces (GPIs), wherein the PXI equipment is arranged in 1 combined chassis with a shock absorber. The KVM is connected with the zero-slot controller and is used for keyboard, mouse input and screen display output. A general purpose verification interface (GPI) and cable are configured for the integrated verification device for docking with a special-purpose adapter. A functional block diagram of the comprehensive verification device is shown in fig. 1.
The damping reinforcement chassis mainly comprises parts such as shielding plates, front and rear panels, a power supply control unit, internal wiring and the like, an outer frame, an inner frame, a damper, a front cover, a rear cover, universal wheels and the like.
The PXI chassis and the modules mainly comprise a PXI/PXIe mixed bus chassis, a zero slot controller, a matrix switch module, a static DIO module, a dynamic DSR module, a multifunctional acquisition module, a digital multimeter module, an audio analyzer module, a radio frequency switch module and the like.
The KVM display and control terminal mainly comprises a keyboard, a display, a touch pad and the like.
The general purpose metering interface (GPI) is mainly composed of a receiver, a receiver module, a stop block, a jack, a cable and the like.
The universal verification equipment (resource multiplexing) mainly comprises a GPIB/multifunctional serial gateway, an arbitrary waveform generator, a frequency meter, a digital oscilloscope, a radio frequency signal source, a program-controlled attenuator, a frequency spectrograph, a power meter, a vector network analyzer, an electronic calibration module and the like.
The metering adapter and the cable mainly comprise a universal metering adapter, a cable, a standby metering adapter, a cable and the like.
The comprehensive verification software mainly comprises automatic verification, virtual instruments, self-checking calibration, information management, system setting, verification program development, assistance and the like.
The shock-absorbing reinforcement chassis mainly comprises parts such as shielding plates, front and rear panels, a power supply control unit, internal wiring and the like, an outer frame, an inner frame, shock absorbers, front and rear covers, universal wheels and the like, and the structure of the shock-absorbing reinforcement chassis is shown in figure 2.
The outer frame and the front and rear covers adopt rotational molding technology, which has supporting and protecting effects on the inner frame, and universal wheels are arranged at the bottom of the outer frame, so that the inner frame is convenient to move. The inner frame is an equipment mounting frame and is suspended in the outer frame through 3 groups of 12 damping shock absorbers. Front and rear panels, upper, lower, left and right shielding plates are arranged on the inner frame and used for electromagnetic shielding. And a general purpose metering interface (GPI), a power supply control unit, a PXI case, a module, an internal wiring and the like are also arranged on the inner frame. The inner frame and the outer frame select a domestic mountain-containing RU100 shock-absorbing reinforced chassis. The inner frame is hung and installed on the outer frame by three groups of 12 damping shock absorbers to play a role in shock absorption and support.
And (3) designing an inner frame electromagnetic shielding: the inner frame, the shielding plate, the front panel, the rear panel, the power control unit, the GPI and the like form a complete electromagnetic shielding box body. The inner frame, the front panel, the rear panel and the shielding plate are in lap joint design, the lap joint part is subjected to conductive oxidation, and the lap joint resistance is less than or equal to 10mΩ; the front and back contact surfaces of the GPI receiver are provided with electromagnetic shielding grooves, the inside of the GPI receiver is filled with a conductive rubber gasket, and the contact resistance is less than or equal to 10mΩ; a ventilation waveguide is arranged on an air duct on the shielding plate, and the cut-off wave speed frequency range of the waveguide is 10 kHz-18 GHz; the power supply control unit is provided with an electromagnetic shielding box inside the case, and an electromagnetic filter is arranged inside the case to isolate the interference of the power supply line end. The exploded view of the unfolded inner frame assembly is shown in fig. 3.
Internal wiring design:
the internal wiring of the shock absorption reinforced chassis is shown in fig. 4. Wherein: the power supply portion is indicated by thick arrow lines. The alternating current input from the outside of the chassis is divided into three paths in the power supply unit, one path is provided with the PXI chassis, the other path is provided with the axial flow fan, and the other path is provided with the scram switch of the front panel.
The signal portions are indicated by black arrow lines. The zero slot of the PXI case outputs 1 network port to the rear panel, and the other 1 network port and 2 serial ports to GPI; matrix switch, static DIO, dynamic DSR, multifunctional acquisition, digital multimeter, audio analyzer, GPI on radio frequency switch of PXI chassis; the universal verification equipment (resource multiplexing) signals introduced by the front panel interface comprise arbitrary waveform generators, frequency meters, digital oscilloscopes, radio frequency signal sources, program-controlled attenuators, frequency spectrographs, power meters and vector network analyzers to GPIs.
PXI/PXIe mixed bus chassis
AMC58104-D is a general PXIe bus 18 slot chassis supporting 3U-sized boards and has the main functions: providing a slot interface for a PXIe/PXI module inserted into the backboard; unified power supply and bus signals are provided, and information such as various commands, data and the like of the PXIe/PXI module under program control is accurately transmitted on the bus backboard; the cooling fan may be set "auto" or "full speed" by the user to bring the PXIe/PXI test system to a good temperature loop. In addition, the backboard also supports functions such as PXIe bus triggering and the like.
Zero slot controller:
AMC5810 is a series of PXIe embedded controller products based on Loongson CPU developed by spaceflight measurement and control company, and is specially designed for various test systems based on PXIe, and provides a durable and stable operating environment with excellent performance for various test applications.
Various PXIe-based test systems are generally composed of a PXIe platform and various high-performance instrument modules, so that complex test tasks are completed. AMC5810 provides interfaces such as USB and COM for connecting and controlling various instruments, and in addition, the serial embedded controllers have two gigabit ethernet interfaces, which can enable a user to use one for LAN connection and the other for controlling a new generation of LXI instruments, and in addition, the system design of the network port redundancy function can be realized by applying the dual-network port hardware scheme.
The functional block diagram of the zero-slot controller is shown in fig. 5, the zero-slot controller comprises a microprocessor module, the microprocessor module is connected with a Loongson bridge chip in a bidirectional connection manner, the microprocessor module is connected with an RS232 serial port through an RS232 driver, and a DVO interface of the Loongson bridge chip is connected with a VGA/DVI display signal interface through a video conversion module; the RGMII interface of the Loongson bridge chip is connected with the gigabit Ethernet interface through the PHY and transformer module; the USB interface of the Loongson bridge chip is connected with the USB interface through the ESD protection and power management module; the hard disk module is connected with the SATA interface of the Loongson bridge chip; the power output end of the battery module is connected with the power input end of the Loongson bridge piece; the Loongson bridge chip is connected with the signal output end of the Linkcap of the PXI backboard connector, and the I2C interface of the Loongson bridge chip is connected with the IPMB pin of the PXI backboard connector through the level conversion module.
Matrix switch module: AMC4613A is a two-wire 4x16 matrix switch based on a PXI bus. The module has the characteristics of high integration and flexible control. The module adopts the magnetic latching relay, and when the module accidentally loses power, the working state before power failure can still be maintained. AMC4613A comprises PXI interface circuit, control circuit, data buffer circuit, drive circuit and relay matrix switch, can realize the multiple signal break-make, switch control. The AMC4613A relay control switch module consists of a PXI interface circuit, a control circuit, a data buffer circuit, a drive circuit and a relay array, and the functional block diagram of the AMC4613A relay control switch module is shown in FIG. 6.
As shown in fig. 6, the matrix switch module includes a front panel connector and a PXI interface, a plurality of processing units are disposed between the front panel connector and the PXI interface, the processing units include a CPLD function control module, a buffer chip and a relay matrix, the PXI interface is connected with the front panel connector sequentially through the CPLD function control module, the buffer chip and the relay matrix, and the PXI interface is connected with the PXI bus.
The PXI bus signals are converted into local buses through a front end interface circuit (FPGA) and the local buses are decoded by a CPLD, and then a relay buffer chip is arranged on a control board and directly controls a relay matrix. The module adopts an upper plate structure and a lower plate structure, an FPGA and a PXI interface in a block diagram are adopted, and a front panel connector is positioned on the lower plate. Wherein the matrix switch is two independent double-wire 4x16 matrix, and the double-wire 4x32 matrix switch or the double-wire 8x16 matrix switch can be formed by connecting external different terminal boxes.
Static DIO module: AMC4502 is a 32-channel optoelectronic isolation bi-directional I/O module, and a user can make the output in an open collector state by customizing to control the on-off of the relay. The AMC4502 has been widely used as a digital I/O device in discrete control, signal switching, an interface between a computer and an external device, a test of a digital communication device, and the like. The input/output circuit adopts a photoelectric isolation design. For convenience of use, the 32 paths of signals are divided into 2 groups, each group is 16 lines, the 2 groups of signals are respectively grounded, and all 32 channels can be independently defined as input or output. The AMC4502 module is 3U size, which meets PXI standard, i.e. the module size is: 160 mm. Times.100 mm. Times.20 mm. The front panel has an AMP68 core pass connector.
The AMC4502-PXI bus 32 channel relay sampling switch module is mainly used for switching analog communication AMC4502 32 channel photoelectric isolation bidirectional I/O switching value PXI module and mainly comprises two circuits: PXI interface circuit, 32-channel photoelectric isolation bidirectional I/O switch circuit, are shown in FIG. 7.
As shown in fig. 7, the static DIO module includes an output connector, a PXI interface and a control circuit, a plurality of static DIO processing units are disposed between the output connector and the PXI interface and the control circuit, the static DIO processing units include a driving circuit, a photoelectric isolation circuit and a buffer circuit, the output connector is connected with the driving circuit in a bidirectional manner, the driving circuit is connected with the photoelectric isolation circuit in a bidirectional manner, the photoelectric isolation circuit is connected with the buffer circuit in a bidirectional manner, the buffer circuit is connected with the PXI interface and the control circuit in a bidirectional manner, and the PXI interface and the control circuit are connected with the PXI bus.
Dynamic DSR module: the PXI-DV1032-100-64M module is a high-density 100Mbps PXI bus digital IO instrument, is mainly used for carrying out feature analysis, verification and test on various digital and mixed signal integrated circuits, and can also be used for simulation and fault diagnosis of board-level circuit digital signals. This module consists of one data sequence controller and 32 data channels with exactly the same function and can be extended to 512 channels. This module is capable of performing both dc and ac parametric tests, and each digital channel can be individually set to driver high, driver low, detection high, detection low, and programmable electronic load. In addition, each channel provides a precision Parameter Measurement Unit (PMU) to provide the user with the ability to measure parallel DC parameters. The module provides a vector memory of 64M depth per channel, and any channel has a bi-directional transmit-receive function and can be switched according to clock cycles. The board supports stimulus/response and real-time comparison modes of operation, allowing the user to test the test components to the maximum.
Multifunctional acquisition module: AMC4324C is an 8-channel fully differential input isolated parallel A/D module based on a PXI bus. The module adopts a digital isolation technology to realize isolation between channels, and the analog channels are isolated from the backboard bus, so that high-speed and high-precision data acquisition of 8-channel analog signals can be realized; each channel is provided with an independent 16bit resolution ADC, and the highest sampling rate reaches 1MSa/s; an on-board memory shared by 8 channels is arranged in the memory, so that the local cache of large data volume of 32M sampling points can be realized at maximum, and the dependence on bus bandwidth is reduced; adopting a DMA transmission technology, ensuring uninterrupted data transmission and realizing continuous acquisition; multiple trigger sources can be selected, and synchronous and parallel acquisition of 8-channel signals is realized by adopting a high-precision synchronization technology. The module is mainly applied to parallel acquisition of multipath dynamic analog quantity in the field of automatic computer testing.
AMC4324C mainly applies the technologies of analog-to-digital conversion, SDRAM storage, multimode triggering and the like, and the internal structure of the module mainly comprises an isolation circuit, a programmable amplifying circuit, a filter circuit, an acquisition circuit, a power supply circuit, an SDRAM storage circuit, a PXI bus interface circuit, a control logic circuit and the like. By adopting an external calibration source for calibration, the data acquisition result can be ensured to have very high precision. The AMC4324C module supports manual calibration by a user, and in addition, the module can be optionally matched with an external auto-calibration program and matched calibration tooling.
The AMC4324C module circuit consists of a protection circuit, an isolation circuit, a programmable amplifying circuit, an attenuation circuit, a filter circuit, an A/D acquisition circuit, an SDRAM data storage circuit, a PXI bus interface circuit, a trigger circuit and the like. Functional block diagrams of the module and functional block diagrams of the front-end input circuit schematic block diagrams of the module are shown in fig. 8. The isolation parallel A/D control logic mainly realizes the acquisition control of analog signals, and comprises four parts of AD clock control, parallel control, trigger selection and storage control, and the logic structure block diagram of the isolation parallel A/D control logic is shown in figure 9.
As shown in fig. 8, the multifunctional acquisition module includes 8 fully differential input isolation parallel modules and an FPGA module connected to the output ends thereof, the fully differential input isolation parallel modules include a protection circuit, the output ends of the protection circuit are connected to the input ends of the PGA programmable gain circuit, the output ends of the PGA programmable gain circuit are connected to the input ends of the attenuation/filter circuit, the output ends of the attenuation/filter circuit are connected to the input ends of the a/D sampling circuit, the output ends of the a/D sampling circuit are connected to the input ends of the digital isolation circuit, the output ends of the digital isolation circuit are connected to the signal input ends of the FPGA module, the 3.3V power module provides a working power supply for the circuits in the fully differential input isolation parallel module through a DC/DC isolation power supply, and the FPGA module is connected to the PXI bus interface in a bidirectional manner.
Digital multimeter module:
AMC4312 PXI bus 61/2 digital multimeter module is a six-bit half digital multimeter module based on the PXI bus. The method is mainly applied to high-precision signal measurement of the PXI platform. The module has the functions of direct current voltage, alternating current voltage, direct current, alternating current, 2-wire resistance, 4-wire resistance, frequency measurement and triggering. The module is in 3U size conforming to PXI standard, namely the module size is: 160 mm. Times.100 mm. Times.20 mm. The front panel has four banana head connectors and an external trigger interface. The digital multimeter module architecture is shown in fig. 10.
The digital multipurpose meter mainly comprises a bus interface circuit, a true effective value circuit, an electronic switch, a relay array, a measuring circuit, a constant current source circuit, an FPGA control circuit and the like. The digital multimeter is communicated with the upper computer through a bus interface circuit. After the FPGA controller in the bus interface circuit interprets the command character string sent by the PXI bus, the command character string is converted into a corresponding control word, and corresponding control is executed. And after the data acquisition is completed, the data is sent to the upper computer through the PXI bus.
As shown in fig. 10, the digital multimeter module comprises a DMM logic control circuit, an input terminal of the digital multimeter module is connected with an input terminal of an electronic switch and a relay array, the DMM logic control circuit is connected with a control input terminal of the electronic switch and the relay array, the electronic switch and the relay array are bidirectionally connected with a true effective value circuit and a constant current source, an output terminal of the electronic switch and the relay array is connected with an input terminal of a measurement circuit, the DMM logic control circuit is bidirectionally connected with a PXI interface, and the PXI interface is connected with a PXI bus.
An audio analyzer module: the AMC5866 PXIe bus audio analyzer has an input sampling rate far higher than 512kS/s of like products, is mainly applied to the generation and measurement of high-performance audio signals, is particularly widely applied to radio station testing, and realizes the verification of the performance of a demodulator by carrying out characteristic analysis on the demodulated audio signals. The module is different from the traditional general PXI digitizer module for audio measurement, the AMC5866 is small in volume and high in integration level, and the functions of the two-channel audio generator and the two-channel audio analyzer are integrated in one single-slot 3U PXIe module. The AMC5866 module circuit consists of a connector, a power conversion chip, a relay switch, an operational amplifier, an AD/DA chip, a master control FPGA chip, an E2PROM and the like.
The overall schematic block diagram of the module is shown in fig. 11, the audio analyzer module comprises two paths of input signal processing units, two paths of output signal processing units and a digital processing unit, the signal output ends of the input signal processing units are connected with the two signal input ends of the digital processing units, and the two signal output ends of the digital processing units are connected with the signal input ends of the output processing units; the input signal processing unit comprises an alternating current/direct current coupling selection module, the output end of the alternating current/direct current coupling selection module is connected with the input end of a first impedance selection circuit, the output end of the first impedance selection circuit is connected with the input end of a first signal conditioning circuit, the output end of the first signal conditioning circuit is connected with the input end of a filter circuit, the output end of the first filter circuit is connected with the signal input end of an AD conversion module, and the signal output end of the AD conversion module is connected with the input end of a signal analysis calculation module in the digital processing unit; the signal output end of the signal generating module in the digital processing unit is connected with the signal input end of the DAC converter in the output signal processing unit, the signal output end of the DAC converter is connected with the input end of the second signal conditioning circuit, the output end of the second signal conditioning circuit is connected with the input end of the second impedance selection circuit, the output end of the second signal conditioning circuit is connected with the input end of the filtering selection circuit, the output end of the filtering selection circuit is the signal output end of the audio analyzer module, the signal output end of the digital processing unit is connected with the signal input end of the DDS generator, the output end of the DDS generator is connected with the AD conversion module and the control signal input end of the DAC converter respectively, and the interface module of the digital processing unit is connected with the PXLE bus.
The audio analysis part selects a corresponding coupling mode and matching impedance according to the type and the size of the signal and the requirement of a user, and then sends the signal to the AD acquisition chip for AD conversion through processing such as gain adjustment and filtering, and the converted data is sent to an upper computer for processing and display through a PXIE bus after being processed by an FPGA. After receiving an output command sent by the upper computer, the FPGA of the audio output part controls the DA chip to output corresponding waveforms, controls the signal conditioning circuit to carry out attenuation and gain adjustment and signal biasing on signals, controls the impedance selection circuit to select corresponding output impedance, selects whether to carry out two-channel signal superposition and anti-aliasing filtering according to user requirements, and finally sends signals set by users through the BNC interface.
A radio frequency switch module: the DC-26.5GHz single-channel SP6T switch module (AMC 4846A) is a module based on a PXI bus, has a working frequency band of DC-26.5GHz and has a single-channel six-way switch. The method is applied to multi-channel signal switching. The radio frequency switch module is a PXI bus standard module, and a backboard power supply is used for +5V, +12V, +3.3V, wherein +5V maximum power consumption is smaller than 5W, +12V maximum power consumption is smaller than 6W, and +3.3V maximum power consumption is smaller than 6W. The module is mainly composed of a radio frequency assembly and a PXI carrier plate, and the overall structure block diagram of the product is shown in FIG. 12.
As shown in fig. 12, the radio frequency switch module includes a PXI bus logic module and a PXI carrier board, where the PXI carrier board includes a PXI interface logic module and a control logic module, the PXI interface logic module is bidirectionally connected with the control logic module, a power output end of the power supply processing module is bidirectionally connected with the PXI interface logic module and the control logic module, and the PXI carrier board is bidirectionally connected with the radio frequency switch circuit.
General purpose metering interface (GPI) design:
the general purpose metering interface (hereinafter referred to as GPI) is shown in figure 13. Wherein the receiver is a structure locking device arranged on the frame; the receiver module is a digital/module/radio frequency/power signal receiving and transmitting channel interface; the stop block is an empty slot shielding plate.
The comprehensive verification device is composed of a PXI/PXIe modular instrument and a desk instrument. Wherein:
the PXI/PXIe modularized instrument is integrally arranged in the reinforced chassis;
the desk type instrument is integrally arranged on the shelter frame;
except for the reserved interfaces, all metering interfaces are uniformly wired to the GPI.
The connection relationship between the instrument and the test channel of the GPI is shown in FIG. 14.
General verification equipment: the universal verification device mainly comprises a vehicle-mounted theodolite verification device, a thermometer, a thermostatic bath, a thermostatic and hygrostat, an acceleration sensor, a force transducer, a pressure calibrator, a rainfall standard meter, a high-precision digital multimeter, a multifunctional calibration source, a rubidium atomic frequency standard, a frequency standard comparator, a time verification device, an audio analyzer, a universal counter, a microwave frequency meter, a radio frequency signal source, a measurement receiver, a power meter, a vector network analyzer and the like, and thus verification/calibration capability comprising parameters such as geometric parameters, thermal parameters, mechanical parameters, electromagnetic parameters, radio electronic parameters, time frequency parameters and the like is formed.
Metering adapter and cable
The metering adapter and cable main components are shown in figure 15,
wherein: the universal ITA can meet the metering guarantee requirement of a universal tested object; 99A, 04A, 05A, 15A, scout finger control, navigation positioning, AFT10, JWP02, ADK07B can meet the metering guarantee requirements of corresponding comprehensive detection systems/devices. The universal calibration adapter and the cable are used for realizing metering service for universal test equipment.
The 99A tank comprehensive performance detection system mainly comprises a metering adapter, comprehensive verification equipment, a 99A tank detection adapter I, a 99A tank detection adapter II, a comprehensive detection platform and a metering cable. The connection relation among the components of the tank comprehensive performance detection system is serial connection, the GPI end of the comprehensive verification device is connected with the ITA end of the 9 metering adapter, and the GPI end of the comprehensive verification device is connected with the 99A tank detection adapter I and the 99A tank detection adapter II respectively through metering adapter cables. The 99A type tank comprehensive detection system is respectively connected with a 99A type tank detection adapter I and a 99A type tank detection adapter II through VPC interfaces. The connection diagram is shown in fig. 16.
The metering adapter comprises a general calibration adapter and a special metering adapter, the special metering adapter comprises a 99A tank metering adapter, the comprehensive calibration equipment is connected with the 99A tank metering adapter through a GPI interface, metering interfaces of the 99A tank metering adapter are respectively connected with detection interfaces of two 99A tank detection adapters through adapter cables, and a VPC interface of the 99A tank detection adapter is connected with a VPC interface of a 99A tank comprehensive detection platform.
The metering adapter comprises a core processing module which is connected with a network port through a network switching module, the network port is in bidirectional connection with a resource interface of the metering adapter, the network switching module is in bidirectional connection with a bus module, a control module and a conversion module and is used for receiving corresponding test signals, the bus module is in bidirectional connection with the core processor module, and the bus module is respectively connected with an MIC bus and the metering interface; the control module is respectively connected with the excitation module and the logic control module in a bidirectional manner and is used for controlling the excitation module and the logic control module to act, the excitation module and the logic control module are connected with the detection interface of the detection system through the metering interface, and the power supply module is used for providing a working power supply for a module needing power supply in the metering adapter.
The metering adapter is respectively connected with the detection adapter I and the detection adapter II through cables, and the metering software is operated to simulate equipment components such as a driver task terminal, a turret angular velocity sensor, a laser warning, an electric comprehensive control box, a car length task terminal, a car body gyro sensor, a three-proofing fire-extinguishing explosion-suppression MIC control box, a thermal imager, a photoelectric anti-master controller, a fire control computer, a chassis electronic device, a turret MIC control box, an automatic tracking, a car length MIC control box, a car length mirror subsystem, a roll sensor, a chassis MIC control box, a turret electronic device, a weather sensor, a gun control computer, a gun control box, a gyroscope, an operating platform, an angle limiter, an engine electronic control box, an MIC control box, a bullet seed encoder, a bullet loader program control box and the like, and the corresponding metering calibration is completed by interactive matching with the test software of the TK detection adapter I and the TK detection adapter II.
Metering adapter design:
in the working principle of the metering adapter, the core processor module simulates working logic of equipment components through the data communication exchange principle of the Ethernet switch, the bus module, the control module and the excitation module are matched to realize signal output of the detection system, the switching module switches output signals to a metering interface of the metering adapter, and the switching module is matched with metering software to complete the metering function of the output signals of the detection system. The measuring platform is used for connecting general instruments such as a signal source and the like into the measuring adapter, and the switching module of the measuring adapter is used for inputting signals of the signal source into the detection system and completing the measuring function of the input signals of the detection system in cooperation with measuring software. When the MIC bus is mated with the metering software, a dedicated bus cable is connected to the detection system and the metering adapter. The principle of operation of the metering adapter is shown in fig. 17.
1) Bus module
Bus interface: an Ethernet network;
serial bus: number of channels: 4 paths of RS232/485/422 are configurable, standard bus electrical specifications are supported, and the communication rate is 115.2kbps at maximum;
CAN bus: the number of channels is 2, and the CAN2.0A/B protocol specification is supported, and the communication rate is 5 kbps-1 Mbps;
MIC bus: the number of channels is 1, and the two-channel redundancy design is adopted, so that bus communication data can be monitored, and PIM, RSM, DIM, DOM and other working modes are supported. The communication rate is 2Mb/s at maximum by adopting a command/response protocol.
And (3) power supply: DC12V;
2) Control module
Bus interface: an Ethernet network;
a/D resources: 64 single-ended or 32 differential, 10V input range, 1% F.S precision and 250kS/s sampling rate;
D/A resources: 3 paths of single ends, an output range of +/-10V, precision of +/-1% F.S and conversion rate of 250kS/s, and output signals support arbitrary waveform output and function signal generator functions;
digital I/O: the 40 paths can be operated by bit and byte, are compatible with 3.3V, LTCMOS level, and support any digital waveform output function;
and (3) power supply: DC12V;
3) Core processor module
The core processor module of the metering adapter is mainly used for simulating working logic of equipment components and controlling a component bus communication protocol, and meanwhile, I/O signals, serial port signals, CAN bus signals and the like CAN be expanded, and domestic MCU with the model of GD32F450 is selected. The circuit diagram is shown in fig. 18.
4) CAN bus
The CAN bus expansion circuit selects SIT1040T chip, CAN2_T and CAN2_R are connected with the core processor module, CAN2_H and CAN2_L are expansion channels of the CAN bus, and one chip CAN expand one CAN bus channel. The circuit diagram is shown in fig. 19.
5) Serial port bus
The RS422 expansion circuit adopts SIT3490ESA chips, TX_6 and RX_6 are connected with a core processor module, TX+, TX-, RX+ and RX-are expansion channels of an RS422 bus, and one chip can expand one path of RS422 bus channel. The circuit diagram is shown in fig. 20.
6) Serial port bus
The RS485 expansion circuit selects SIT13485E chip, TX_3 and RX_3 are connected with the core processor module, RS485_A and RS485_B are expansion channels of RS485 bus, and one chip can expand one path of RS485 bus channel. The circuit diagram is shown in fig. 21.
The RS232 expansion circuit selects SIT3232E chip, tx1_232 and Rx1_232 are connected with the core processor module, RS232_Tx1 and RS232_Rx1 are expansion channels of an RS232 bus, and one chip can expand one path of RS232 bus channel. The circuit diagram is shown in fig. 22.
7) Excitation module
The excitation module signal is used to input an excitation signal to the metered detection system. In the metering process, the detection system can output the metered signals only when different voltage values or frequency signals are input by matching multiple excitation signals. The current driving capability of the metering platform for directly outputting the excitation signal cannot meet the requirement, and the driving capability needs to be increased. The voltage range of the excitation signal output by the metering adapter is-10V to +10V, and the capability of the operational amplifier for expanding the output current is increased.
As shown in fig. 23, the excitation module includes an operational amplifier U1, one end of a resistor R111 is a DA0 input end, the other end of the resistor R111 is divided into two paths, a first path is grounded through a capacitor C66, a second path is connected with the in-phase input end of the operational amplifier U1, one end of a resistor R101 is grounded, the other end of the resistor R101 is divided into two paths, the first path is connected with the inverting input end of the operational amplifier, and the second path is connected with the output end of the operational amplifier through a resistor R97; the V+ input end of the U1 is divided into two paths, the first path is connected with a +15V power supply, and the second path is grounded through a capacitor C61; the V-input end of the U1 is grounded through a capacitor C70; the output end of the operational amplifier U1 is connected with one end of a resistor R105, the other end of the resistor R105 is divided into two paths, the first path is the signal output end of the excitation module, and the second path is grounded through a capacitor C62.
8) Logic control
The logic control output is mainly used for inputting logic control signals to the metered detection system. In the metering process, the detection system can output the metered signal only when the high-level power supply voltage signal or the low-level ground signal is input by matching logic control signals. The circuit diagram is shown in fig. 24.
9) Network switching module
The chip model selected by the network exchange module is SF2507, and the total of 8 channels can meet the requirement of the project. The circuit diagram is shown in fig. 25.
The network chip cannot be directly connected with the network equipment, and a network isolation transformer is needed in the middle for connection, and the circuit diagram is shown in fig. 26.
The power supply voltage of the network chip is 3.3V, the network chip needs to be electrified to work before the metering adapter conditioning board is electrified, the power input end of the power supply conversion circuit is the control front end of the power supply input, and the upper computer can be connected to the control module through the network chip to control the electrifying circuit to electrify the metering adapter.
The circuit diagram is shown in fig. 27, the power supply module comprises a power supply chip U2, a 24V power supply input end is divided into three paths, the first path is grounded through a capacitor C6, the second path is connected with one end of a resistor R7, and the third path is connected with a pin 7 of the U2; the other end of the resistor R7 is divided into two paths, the first path is grounded through a resistor R8, and the second path is connected with the 2 pin of the U2; the 6 pin of the U2 is grounded through a resistor R9; the 5 pin of the U2 is grounded; the 8 pin of the U2 is connected with the 1 pin of the U2 through a capacitor C7; the U2 is characterized in that the pin 1 of the U2 is divided into two paths, the first path is grounded through a voltage stabilizing diode D3, the second path is connected with one end of an inductor L2, the other end of the inductor L2 is divided into three paths, the first path is connected with one end of a resistor R11, the second path is grounded through a capacitor C8, the third path is a 3.3V output end of the power module, the other end of the resistor R11 is divided into two paths, the first path is connected with the pin 4 of the U2, and the second path is sequentially grounded through a resistor R12 and a resistor R13.
The metering adapter shell is made of cast aluminum materials and consists of a machine body, a cover plate and a bottom plate, a card inserting structure is adopted in the metering adapter shell, and a locking device is arranged on a card. An outline view of the metering adapter is shown in fig. 28.
The external dimension of the metering adapter ismm (width) × ->mm (deep) × ->mm (high) (without floor foot pads and handles on both sides). Handles are arranged at the left and right sides of the case. The top of the case is provided with a nameplate. The bottom is provided with a rubber shock absorber. The front panel is provided with a metering navigation socket connected with the detection adapter, and the rear panel is provided with a frame connected with the metering platform.
The metering adapter is internally provided with a front/rear cross beam, a bottom plate, a conditioning plate, an internal wiring harness and the like by adopting a plug-in card type design. The bottom plate is fixed on the front/rear cross beam, the conditioning plate is connected with the bottom plate through a connector, and the conditioning plate is fixed on the front/rear cross beam through a locking strip.
Claims (4)
1. The utility model provides a comprehensive verification equipment of motor-driven calibration verification car which characterized in that: the comprehensive verification equipment comprises a zero slot controller positioned in the shock absorption reinforcement chassis, wherein the zero slot controller is respectively connected with a KVM display and control terminal and a GPIB/multifunctional serial gateway outside the shock absorption reinforcement chassis in a two-way manner; the zero slot controller is in bidirectional connection with a PXI/PXIe chassis in the shock absorption reinforcement chassis, the PXI/PXIe chassis is in bidirectional connection with a universal test interface through a matrix switch module, a static DIO module, a dynamic DSR module, a multifunctional acquisition module, a digital multimeter module, an audio analysis module and a radio frequency switch module respectively, the universal test interface is in bidirectional connection with a metering adapter, and the metering adapter is used for connecting a tested unit;
the zero-slot controller comprises a microprocessor module, wherein the microprocessor module is connected with the Loongson bridge chip in a bidirectional way, the microprocessor module is connected with an RS232 serial port through an RS232 driver, and a DVO interface of the Loongson bridge chip is connected with a VGA/DVI display signal interface through a video conversion module; the RGMII interface of the Loongson bridge chip is connected with the gigabit Ethernet interface through the PHY and transformer module; the USB interface of the Loongson bridge chip is connected with the USB interface through the ESD protection and power management module; the hard disk module is connected with the SATA interface of the Loongson bridge chip; the power output end of the battery module is connected with the power input end of the Loongson bridge piece; the I2C interface of the Loongson bridge chip is connected with an IPMB pin of the PXI backboard connector through a level conversion module;
the matrix switch module comprises a front panel connector and a PXI interface, a plurality of processing units are arranged between the front panel connector and the PXI interface, each processing unit comprises a CPLD function control module, a buffer chip and a relay matrix, the PXI interface is connected with the front panel connector through the CPLD function control module, the buffer chip and the relay matrix in sequence, and the PXI interface is connected with a PXI bus;
the static DIO module comprises an output connector, a PXI interface and a control circuit, a plurality of static DIO processing units are arranged between the output connector and the PXI interface and the control circuit, the static DIO processing units comprise a driving circuit, a photoelectric isolation circuit and a buffer circuit, the output connector is in bidirectional connection with the driving circuit, the driving circuit is in bidirectional connection with the photoelectric isolation circuit, the photoelectric isolation circuit is in bidirectional connection with the buffer circuit, the buffer circuit is in bidirectional connection with the PXI interface and the control circuit, and the PXI interface and the control circuit are connected with a PXI bus;
the audio analysis module comprises two paths of input signal processing units, two paths of output signal processing units and a digital processing unit, wherein the signal output ends of the input signal processing units are connected with the two signal input ends of the digital processing unit, and the two signal output ends of the digital processing unit are connected with the signal input ends of the output processing unit; the input signal processing unit comprises an alternating current/direct current coupling selection module, the output end of the alternating current/direct current coupling selection module is connected with the input end of a first impedance selection circuit, the output end of the first impedance selection circuit is connected with the input end of a first signal conditioning circuit, the output end of the first signal conditioning circuit is connected with the input end of a filter circuit, the output end of the filter circuit is connected with the signal input end of an AD conversion module, and the signal output end of the AD conversion module is connected with the input end of a signal analysis calculation module in the digital processing unit; the signal output end of the signal generating module in the digital processing unit is connected with the signal input end of the DAC converter in the output signal processing unit, the signal output end of the DAC converter is connected with the input end of the second signal conditioning circuit, the output end of the second signal conditioning circuit is connected with the input end of the second impedance selection circuit, the output end of the second signal conditioning circuit is connected with the input end of the filtering selection circuit, the output end of the filtering selection circuit is the signal output end of the audio analysis module, the signal output end of the digital processing unit is connected with the signal input end of the DDS generator, the output end of the DDS generator is connected with the AD conversion module and the control signal input end of the DAC converter respectively, and the interface module of the digital processing unit is connected with the PXLE bus.
2. The comprehensive verification device for a motorized calibration verification vehicle of claim 1, wherein: the multifunctional acquisition module comprises 8 fully differential input isolation parallel modules and an FPGA module connected with the output ends of the fully differential input isolation parallel modules, wherein the fully differential input isolation parallel modules comprise a protection circuit, the output ends of the protection circuit are connected with the input ends of a PGA programmable gain circuit, the output ends of the PGA programmable gain circuit are connected with the input ends of an attenuation/filtering circuit, the output ends of the attenuation/filtering circuit are connected with the input ends of an A/D sampling circuit, the output ends of the A/D sampling circuit are connected with the input ends of a digital isolation circuit, the output ends of the digital isolation circuit are connected with the signal input ends of the FPGA module, a 3.3V power module provides a working power supply for circuits in the fully differential input isolation parallel modules through a DC/DC isolation power supply, and the FPGA module is in bidirectional connection with a PXI bus interface.
3. The comprehensive verification device for a motorized calibration verification vehicle of claim 1, wherein: the digital multimeter module comprises a DMM logic control circuit, an input terminal of the digital multimeter module is connected with an input end of an electronic switch and relay array, the DMM logic control circuit is connected with a control input end of the electronic switch and relay array, the electronic switch and relay array is in bidirectional connection with a true effective value circuit and a constant current source, an output end of the electronic switch and relay array is connected with an input end of a measuring circuit, the DMM logic control circuit is in bidirectional connection with a PXI interface, and the PXI interface is connected with a PXI bus.
4. The comprehensive verification device for a motorized calibration verification vehicle of claim 1, wherein: the radio frequency switch module comprises a PXI bus logic module and a PXI carrier plate, the PXI carrier plate comprises a PXI interface logic module and a control logic module, the PXI interface logic module is in bidirectional connection with the control logic module, a power output end of the power supply processing module is in bidirectional connection with the PXI interface logic module and the control logic module, and the PXI carrier plate is in bidirectional connection with the radio frequency switch circuit.
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| CN109391287A (en) * | 2018-12-18 | 2019-02-26 | 成都前锋电子仪器有限责任公司 | Signal processing unit for radio integration test module |
| CN113965501A (en) * | 2021-09-30 | 2022-01-21 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Communication navigation recognition system module test platform |
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| US8514919B2 (en) * | 2009-08-26 | 2013-08-20 | Bae Systems National Security Solutions Inc. | Synthetic instrument unit |
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| GB8722960D0 (en) * | 1983-11-25 | 1987-11-04 | Mars Inc | Automatic test equipment |
| CN103414529A (en) * | 2013-08-26 | 2013-11-27 | 华北计算技术研究所 | Universal automatic testing and fault diagnosis system |
| CN104133139A (en) * | 2014-07-30 | 2014-11-05 | 成都天奥测控技术有限公司 | Multifunctional PXI module integration testing instrument and testing method thereof |
| CN109391287A (en) * | 2018-12-18 | 2019-02-26 | 成都前锋电子仪器有限责任公司 | Signal processing unit for radio integration test module |
| CN113965501A (en) * | 2021-09-30 | 2022-01-21 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Communication navigation recognition system module test platform |
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