CN104121828A - Speed-grading and impact signal flexible collecting method - Google Patents
Speed-grading and impact signal flexible collecting method Download PDFInfo
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- CN104121828A CN104121828A CN201410225320.7A CN201410225320A CN104121828A CN 104121828 A CN104121828 A CN 104121828A CN 201410225320 A CN201410225320 A CN 201410225320A CN 104121828 A CN104121828 A CN 104121828A
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Abstract
The invention provides a speed-grading and impact signal flexible collecting method. Multiple channels of programmable-control analog switches are in parallel connection or cascaded connection to achieve the purpose of gating and collecting super-multiple channels of signals. An on-site programmable logic device is utilized to previously set the gating sequence of the multiple channels of signals and the gating ranges of the switches to achieve a flexible data collecting method. Thus, the work efficiency of a remote measuring system is greatly improved. Meanwhile, by means of a flexible design method, a collecting circuit can be designed adaptively according to different requirements. Compared with traditional circuit measurement, the application universality of the speed-grading and impact signal flexible collecting method is improved.
Description
Technical field
The present invention relates to the flexible acquisition method of the gradual and impact signal of a kind of speed, for the fast tempolabile signal of large capacity multi-path and impact signal are carried out to acquisition process, belong to the information acquiring technology field of space telemetry technology.
Background technology
Along with the proposition of big data quantity, the measurement demand that becomes more meticulous, the integrated acquisition process of vast capacity data becomes the development trend of information acquiring technology.
Traditional collection of simulant signal converting means mainly adopts single channel acquisition mode to carry out, Acquisition Circuit design bulky complex, on every bullet, need the collection conversion of several the type stand-alone device ability completion system speed tempolabile signals and impact signal, the chronological order of its information radio frequency channel need rely on rear end equipment and realize, channel information Ji Ge road signals collecting order can not be controlled flexibly, can not meet the Real-time Collection conversion process demand of big data quantity and multiple signals parameter.
If adopt the data processing method of multi-channel A/D chip collection conversion, front end translation circuit design bulky complex for signal with different type, and the volume of military multi-channel A/D chip own is larger, need multi-disc AD chip Parallel Design could realize the signals collecting conversion of super multichannel, cannot meet the requirement of device miniaturization and high integration.
Summary of the invention
Technology of the present invention is dealt with problems: overcome the deficiencies in the prior art, in order to adapt to product miniaturization on bullet, integrated integration requirement, alleviate the weight and volume of payload on bullet, comply with the development trend of new technology, the present invention has used the signals collecting translation circuit of New Generation of Integrated, make signals collecting translation circuit carry out work with the modular form of unit, operating efficiency and the properties of product of ICU on bullet have been improved, the flexible acquisition method of the gradual and impact signal of a kind of speed is proposed, the gating that mode by the program control analog switch parallel connection of multichannel or cascade realizes super multiple signals gathers, site of deployment PLD, by the programming Control to address generator, compile and edit in advance gating order and the switching gate scope of each road signal, realized flexible data acquisition method, greatly improved the operating efficiency of telemetry system, simultaneously, by the method for flexible design, online programming technology has realized Acquisition Circuit and has carried out adaptive design according to different demands, with respect to traditional circuit, measure, greatly improved the popularity of its application.
Technical solution of the present invention: the flexible acquisition method of the gradual and impact signal of a kind of speed, step is as follows:
(1) on reception bullet, control system and sensor collect fast tempolabile signal and impact signal;
(2) SECO and channel selecting module are sent into the address generate analog switch control instruction in the order memory of sampling road according to address generator, and the sequence of addresses in address generator can be used the flexibility process of online programming to compile and edit according to the actual requirements;
(3) the analog switch control instruction producing according to step (2) is controlled the 16 and is selected analog switch to the N 16 to select the gating of an analog switch, selects N road speed tempolabile signal from step (1) in the fast tempolabile signal collecting;
(4) the N road speed tempolabile signal of selecting in step (3) is sent into N and select an analog switch, the analog switch control instruction producing according to step (2), in the N road speed tempolabile signal of selecting, select again 1 tunnel speed tempolabile signal from step (3), send into the first amplifier and carry out shaping amplification, be transformed to and meet the signal that AD input codomain requires;
The signal of (5) the one AD modular converter receiving step (4) outputs, the control instruction of sending according to SECO and channel selecting module is carried out the AD conversion to input signal, and the eight-digit number word amount signal after conversion is sent into output buffering and control module;
(6) this step is synchronizeed and is carried out to step (5) time-division slot with step (3), the gating of an analog switch is selected in the analog switch control instruction control eight producing according to step (2), in the impact signal collecting, select 1 road impact signal from step (1), send into the second amplifier and carry out shaping amplification, be transformed to and meet the signal that AD input codomain requires;
The signal of (7) the 2nd AD modular converter receiving step (6) outputs, the control instruction of sending according to SECO and channel selecting module is carried out the AD conversion to input signal, and the eight-digit number word amount signal after conversion is sent into output buffering and control module;
(8) output buffering and control module judges ends of whether sampling of an AD modular converter and the 2nd AD modular converter, and eight-digit number word amount signal highest order are carried out to the judgement of data codomain, definite effective fast tempolabile signal and impact signal exported.
To the gating of described fast tempolabile signal and impact signal, adopt the analog switch gating instruction that SECO and channel selecting unit are sent here to control, this instruction produces according to programmable address generator, signal gating device is used 16 to select one or eight to select an analog switch, and can adopt the method for multiway analog switch parallel connection or cascade to realize big data quantity and multiplexed signal sampling transmission.
The present invention compared with prior art tool has the following advantages:
(1) the present invention adopts a plurality of 16 to select one and eight modes of selecting the in parallel and cascade of an analog switch, and the gating collection that realizes the fast tempolabile signal of super multichannel and impact signal is transmitted, and has reduced the complexity of front-end circuit.
(2) the present invention adopts flexible design method, application passage gating Programmable Technology, at unit input, can control flexibly by system requirements the gating order of each signal, and can realize for the acquisition order of fast tempolabile signal and impact signal and carry out program control layout by flexible design, rationally layout output radio frequency channel.
(3) the present invention adopts analog switch gating to substitute AD chip input gating mode, can effectively reduce circuit area occupied, realizes device miniaturization design.
Accompanying drawing explanation
Fig. 1 is each functions of modules theory diagram of data acquisition transformation system of the present invention;
Fig. 2 is data acquisition conversion workflow diagram of the present invention;
Fig. 3 is collection signal data processing method flow chart of the present invention.
The specific embodiment
Basic ideas of the present invention are: according to current large capacity, the demand of super multichannel various types of signal parameter acquisition, meet the ability of back-end controller processing signals information, the present invention adopts SECO and the channel selecting unit in field programmable logic device to produce the instruction of analog switch gating, it is sent to 16 according to the sequential of setting and select an analog switch, eight select an analog switch and N to select an analog switch, by the mode to the program control analog switch parallel connection of multichannel or cascade, realization is to multichannel speed tempolabile signal and impact signal Tiao road, layout, the steps such as processing and AD conversion, and the validity of data and codomain scope are carried out to discriminatory analysis, digital information after conversion process is sent to data storage and the comprehensive module of rear end.
Below in conjunction with accompanying drawing, the present invention is described in detail, as shown in Figure 1, the flexible acquisition system of the gradual and impact signal of a kind of speed, comprise that the 16 selects an analog switch to the 26 to select an analog switch, alternative analog switch, the first amplifier, an AD modular converter, eight select an analog switch, sampling road order memory, the second amplifier, the 2nd AD modular converter, CPLD chip, and CPLD chip comprises SECO and channel selecting unit, address generator and output buffering and control module.
Below in conjunction with each functions of modules theory diagram of data acquisition transformation system as shown in Figure 1 with to the speed in whole invention, the gradual and flexible collecting flowchart of impact signal describes.
First the functional requirement of arranging for data channel according to outside, after system reset, address generator is initialized as the initial address of a certain concrete SECO and channel selecting unit, this initial address is sent into sampling road order memory, SECO and channel selecting unit be address information in the order memory of retaking of a year or grade sampling road in order again, is transformed generation 16 and selects an analog switch, eight to select the gating instruction of an analog switch and alternative analog switch.
The 16 select that input that an analog switch to the 26 selects an analog switch sends into according to SECO and channel selecting unit 16 select an analog switch gating instruction, the gradual analog signal of speed that on reception bullet/arrow, control system or sensor gather, the gradual analog signal of speed of selecting for two 16 analog switch to export respectively after two road gatings is delivered to alternative analog switch, alternative analog switch receives the gradual analog signal of speed after two road gatings, the gradual analog signal of speed that a road meets system radio frequency channel demands is selected in the gating instruction of sending here according to SECO and channel selecting unit, after amplifying, the first amplifier sends into an AD modular converter, the complete sign of collection of simulant signal that the one AD modular converter is sent into according to SECO and channel selecting unit, the gradual analog signal of single channel speed after the first amplifier is amplified is carried out AD and is converted eight-digit number word amount signal to, and deposit output buffering and the control module of CPLD chip in.
Eight select that an analog switch sends here according to SECO and channel selecting unit eight select an analog switch gating instruction, shock simulation signal from control system collection bullet after amplifying, the second amplifier is delivered to the 2nd AD modular converter, the shock simulation signal that the 2nd AD modular converter is sent here according to SECO and channel selecting unit, single channel shock simulation signal after the second amplifier is amplified converts eight-digit number word amount signal to through AD, delivers to output buffering and control module.
The 8th information of the eight-digit number word amount signal that output buffering and control module basis receive, the fast tempolabile signal that judgement will be exported and the validity of impact signal, if 0, export effective fast tempolabile signal and impact signal, if 1, output signal value 0.
Address generator is according to converting the complement mark position of passage to completing collection and AD in order control and channel selecting unit and output buffering and control module, producing next 16 selects an analog switch or eight to select an analog switch or alternative analog switch channel selecting address, and deposit this address in sampling road order memory, SECO and channel selecting unit be address in the order memory of retaking of a year or grade sampling road in order again, make the 16 to select an analog switch to the 26 to select all passages that all input channels and eight of an analog switch select analog switch gating successively, realize the multi-channel data acquisition mapping function process of circulation.
The eight-digit number word amount signal that the eight-digit number word amount signal that output buffering and control module are sent an AD modular converter here and the 2nd AD modular converter are sent here, the output channel control instruction of sending here according to SECO and channel selecting unit, exports to Back end data store and comprehensive module successively.
For the codomain validity that completes the rear data signal of collection conversion, process as shown in Figure 3, because the codomain scope of fast tempolabile signal and impact signal is non-negative, fluctuation or external interference signal near signal null value can produce invalid negative value signal, send into after AD conversion module, after speed tempolabile signal and impact signal sampling finish, output buffering and control module need carry out data validity judgement according to the 8th of eight-digit number word amount signal, and carry out respectively the 8th information judgement by fast tempolabile signal and impact signal, if 0, export effective fast tempolabile signal or impact signal, if 1, output signal value 0.
As shown in Figure 2, the flexible acquisition method of the gradual and impact signal of a kind of speed, step is as follows:
(1) on reception bullet, control system and sensor collect fast tempolabile signal and impact signal;
(2) SECO and channel selecting module are sent into the address generate analog switch control instruction in the order memory of sampling road according to address generator, and the sequence of addresses in address generator can be used the flexibility process of online programming to compile and edit according to the actual requirements;
(3) the analog switch control instruction producing according to step (2) is controlled the 16 and is selected an analog switch to the 26 to select the gating of an analog switch, selects two tunnel speed tempolabile signals from step (1) in the fast tempolabile signal collecting;
(4) send selecting Er road speed tempolabile signal in step (3) into alternative analog switch, the analog switch control instruction producing according to step (2), from step (3), select and in Er road speed tempolabile signal, select again 1 tunnel speed tempolabile signal, send into the first amplifier and carry out shaping amplification, be transformed to and meet the signal that AD input codomain requires;
The signal of (5) the one AD modular converter receiving step (4) outputs, the control instruction of sending according to SECO and channel selecting module is carried out the AD conversion to input signal, and the eight-digit number word amount signal after conversion is sent into output buffering and control module;
(6) this step is synchronizeed and is carried out to step (5) time-division slot with step (3), the gating of an analog switch is selected in the analog switch control instruction control eight producing according to step (2), in the impact signal collecting, select 1 road impact signal from step (1), send into the second amplifier and carry out shaping amplification, be transformed to and meet the signal that AD input codomain requires;
The signal of (7) the 2nd AD modular converter receiving step (6) outputs, the control instruction of sending according to SECO and channel selecting module is carried out the AD conversion to input signal, and the eight-digit number word amount signal after conversion is sent into output buffering and control module;
(8) output buffering and control module judges ends of whether sampling of an AD modular converter and the 2nd AD modular converter, and eight-digit number word amount signal highest order are carried out to the judgement of data codomain, definite effective fast tempolabile signal and impact signal exported.
The present invention, by the flexible data acquisition method of field programming secondary development, in the secondary development of flexibility function, can, not changing under the condition of any connection wire on (not increase and decrease) circuit board, realize designing again of the arrangement of signal radio frequency channel or function.
Non-elaborated part of the present invention belongs to techniques well known.
Claims (2)
1. the flexible acquisition method of the gradual and impact signal of speed, is characterized in that step is as follows:
(1) on reception bullet, control system and sensor collect fast tempolabile signal and impact signal;
(2) SECO and channel selecting module are sent into the address generate analog switch control instruction in the order memory of sampling road according to address generator, and the sequence of addresses in address generator is determined according to the actual requirements;
(3) the analog switch control instruction producing according to step (2) is controlled the 16 and is selected analog switch to the N 16 to select the gating of an analog switch, selects N road speed tempolabile signal from step (1) in the fast tempolabile signal collecting;
(4) the N road speed tempolabile signal of selecting in step (3) is sent into N and select an analog switch, the analog switch control instruction producing according to step (2), in the N road speed tempolabile signal of selecting, select again 1 tunnel speed tempolabile signal from step (3), send into the first amplifier and carry out shaping amplification, be transformed to and meet the signal that AD input codomain requires;
The signal of (5) the one AD modular converter receiving step (4) outputs, the control instruction of sending according to SECO and channel selecting module is carried out the AD conversion to input signal, and the eight-digit number word amount signal after conversion is sent into output buffering and control module;
(6) this step is synchronizeed and is carried out to step (5) time-division slot with step (3), the gating of an analog switch is selected in the analog switch control instruction control eight producing according to step (2), in the impact signal collecting, select 1 road impact signal from step (1), send into the second amplifier and carry out shaping amplification, be transformed to and meet the signal that AD input codomain requires;
The signal of (7) the 2nd AD modular converter receiving step (6) outputs, the control instruction of sending according to SECO and channel selecting module is carried out the AD conversion to input signal, and the eight-digit number word amount signal after conversion is sent into output buffering and control module;
(8) output buffering and control module judges ends of whether sampling of an AD modular converter and the 2nd AD modular converter, and eight-digit number word amount signal highest order are carried out to the judgement of data codomain, definite effective fast tempolabile signal and impact signal exported.
2. the flexible acquisition method of the gradual and impact signal of a kind of speed according to claim 1, it is characterized in that: the analog switch gating instruction that adopts SECO and channel selecting unit to send here to the gating of described fast tempolabile signal and impact signal is controlled, this instruction produces according to programmable address generator, signal gating device is used 16 to select one or eight to select an analog switch, and can adopt the method for multiway analog switch parallel connection or cascade to realize big data quantity and multiplexed signal sampling transmission.
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| CN113485190A (en) * | 2021-07-13 | 2021-10-08 | 西安电子科技大学 | Multichannel data acquisition system and acquisition method |
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