CN105159182B - A kind of analog quantity detection circuit and detection method that detection range is adaptive - Google Patents
A kind of analog quantity detection circuit and detection method that detection range is adaptive Download PDFInfo
- Publication number
- CN105159182B CN105159182B CN201510383310.0A CN201510383310A CN105159182B CN 105159182 B CN105159182 B CN 105159182B CN 201510383310 A CN201510383310 A CN 201510383310A CN 105159182 B CN105159182 B CN 105159182B
- Authority
- CN
- China
- Prior art keywords
- detection
- analog quantity
- conversion chips
- detection range
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25314—Modular structure, modules
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
The invention discloses a kind of analog quantity detection circuits and detection method that detection range is adaptive, the circuit includes sequentially connected front-end processing circuit, A/D conversion chips and MCU processor, and the method includes the steps the detection ranges of A, setting A/D conversion chips；Step B, primary just detection is carried out to the analog quantity being input in A/D conversion chips；Step C, the first detected value that the step B is judged by MCU processor determines the minimum detection limits for being suitble to the first detected value；Step D after step C, then carries out an analog quantity detection, exports transformation result；The adaptive analog quantity detection of detection range can be realized by the adaptive analog quantity detection circuit of detection range, utilize the adaptive analog quantity detecting method of detection range, in the case where the digit of AD is certain, pass through algorithm automatic identification present day analog amount, automatic adjusument realizes the analog quantity detection of optimal precision to the highest detection range of circuit precision is made.
Description
Technical field
The present invention relates to analog quantity detection technique fields, are a kind of analog quantity that detection range is adaptive inspections specifically
Slowdown monitoring circuit and detection method.
Background technology
Analog quantity detection is exactly after analog quantity is converted to digital quantity (AD conversion), and supply digital signal processing unit carries out
Calculation process.The minimum resolution amount of analog quantity detection is related with analog quantity detection range and analog-digital converter (AD) digit, formula
Forvmax-vminFor detection range, n is the digit of AD.Minimum resolution amount is smaller in the application, system detectio
Precision can be higher.
Existing analog quantity detecting method is generally by the mode of MCU+AD chips, the only occupation mode of the prior art
It is that detection range is directly set in initialization, does not adjust or be limited in real time A/D chips according to realistic simulation amount size
The characteristic of itself cannot be adjusted.The precision that must be used, and convert in the detection range of setting when using this circuit
It is to determine.This just will appear two kinds of problems.Problem one：When the variation range of analog quantity is more than the detection range of setting, I
Can only obtain an A/D conversion maximum or minimum value；Serious situation may cause circuit to damage.Problem two：Work as simulation
When the variation range of amount is significantly less than detection range, it can so that accuracy of detection is insufficient.Such as when the detection range set is -10V
The 16bit A/D of~+10V voltage ranges, when input analog quantity variation range only has 0~+5V voltages, actual detection essence
Degree will only 14bit.
In the prior art, for the detection of 0~5V analog quantitys should be met, also to meet the field of 0~10V analog quantitys detection
It closes, common compatible scheme is design AD ranging from 0~10V, in this way according to minimum resolution amount formula, applied to 0~5V's
The precision of half will be wasted when occasion.
Invention content
The purpose of the present invention is to provide a kind of analog quantity detection circuits and detection method that detection range is adaptive, pass through
The adaptive analog quantity detection circuit of detection range can realize the adaptive analog quantity detection of detection range, certainly using detection range
The analog quantity detecting method of adaptation, in the case where the digit of AD is certain, by algorithm automatic identification present day analog amount, adaptively
It is adjusted such that the highest detection range of circuit precision, realizes the analog quantity detection of optimal precision.
The present invention is achieved through the following technical solutions：A kind of analog quantity detection circuit that detection range is adaptive, including according to
Front-end processing circuit, A/D conversion chips and the MCU processor of secondary connection；
The front-end processing circuit receives input analog quantity, completes filtering operation, filter out unwanted noise signal, and
The analog signals of filtering clutter signal are input in A/D conversion chips；
The A/D conversion chips receive the analog signals come to front-end processing circuit, and complete corresponding AD conversion,
It is controlled simultaneously by MCU processor；
The MCU controllers, send a control signal in A/D conversion chips, and change is adjusted in real time according to realistic simulation amount
The detection range of A/D conversion chips.
Further, the circuit, the A/D conversion chips are that single channel A/D converts core to better implement the present invention
The port number of piece or multichannel A/D conversion chips, the multichannel A/D conversion chips is N, and N is natural number.
Further, the circuit to better implement the present invention, the MCU processor be microcontroller or DSP devices or
FPGA device or CPLD devices.
A kind of analog quantity detecting method that detection range is adaptive, it is characterised in that：Include the following steps：
Step A, the detection range of A/D conversion chips is set；
Step B, primary just detection is carried out to the analog quantity being input in A/D conversion chips；
Step C, the first detected value that the step B is judged by MCU processor determines that one is suitble to the first detected value most
Small detection range；
Step D after step C, then carries out an analog quantity detection, exports transformation result；
The A/D conversion chips are single channel A/D conversion chips or multichannel A/D conversion chips, and the multichannel A/D turns
The port number for changing chip is N, and N is natural number；
The MCU processor is microcontroller or DSP devices or FPGA device or CPLD devices.
Further, in the step A, core is converted for single channel A/D for the method to better implement the present invention
Detection range is set as maximum by piece；For multichannel A/D conversion chips, it sets N number of channel to different detection ranges,
And set one of channel to maximum detection range.
Further, the method to better implement the present invention, one of channel is set to maximum inspection described
It surveys on the basis of range and the detection range in the channel for being set as maximum detection range is further divided into N number of minizone detection model
It encloses.
Further, the method to better implement the present invention, in the step B, to single channel A/D conversion chips
When interior analog quantity carries out primary just detection, the transformation result of this time is not exported；To the analog quantity in multichannel A/D conversion chips
It carries out the analog quantity that primary just detection includes the channel only to being set as maximum detection range and carries out primary just detection and to all
The analog quantity in channel carries out primary just detection.
Further, the method, the step C include method in detail below to better implement the present invention：
Step C.1, be directed to single channel A/D conversion chips, the first detected value of the step B is judged by MCU processor, really
Fixed one is suitble to the minimum detection limits of the first detected value and carries out Initialize installation to single channel A/D conversion chips again；
Step C.2, be directed to multichannel A/D conversion chips, including：
C.2.1, at the beginning of the analog quantity in the channel only to being set as maximum detection range carries out once step when detection, passes through
MCU processor judges the first detected value in the channel for being set as maximum detection range, determines that one is suitble to be set as maximum detection range
Just the minimum detection limits of detected value and described corresponding to minimum detection limits are set as the logical of maximum detection range in channel
Road；
Step C.2.2, when carrying out primary just detection to the analog quantity in all channels, judged by MCU processor N number of logical
Road just after detected value, determines a suitable N number of channel just corresponding to the minimum detection limits and minimum detection limits of detected value
Channel N.
Further, in the step D, core is converted for multichannel A/D for the method to better implement the present invention
Piece includes carrying out the detection of analog quantity again to being set as the channel of maximum detection range or/and carrying out a mould again to channel N
Analog quantity detects.
Compared with prior art, the present invention haing the following advantages and advantageous effect：
(1) present invention can realize the adaptive simulation of detection range by the adaptive analog quantity detection circuit of detection range
Amount detection, it is automatic by algorithm in the case where the digit of AD is certain using the adaptive analog quantity detecting method of detection range
Identify present day analog amount, automatic adjusument realizes the analog quantity detection of optimal precision to the highest detection range of circuit precision is made.
(2) present invention will not increase additional hardware cost, identical with common technical solution hardware composition.
(3) present invention adjusts the case where detection range is to precision highest in real time according to analog quantity size, is kept not in hardware
In the case of change, make the precision higher of testing result.
(4) use of the invention can select the AD of a grade at low cost on the hardware plan of precision prescribed before
Chip reaches identical precision, effectively saves hardware cost.
Description of the drawings
The circuit structure block diagram of Fig. 1 present invention.
Fig. 2 is the MCU controller control flow charts that the present invention carries out analog quantity detection using single channel A/D conversion chips.
Fig. 3 is when the present invention uses multichannel A/D conversion chips to carry out analog quantity detection only to the analog quantity of single channel
Carry out the primary MCU controller control flow charts just detected.
Fig. 4 is the present invention when carrying out analog quantity detection using multichannel A/D conversion chips to the analog quantity in all channels into
The primary MCU controller control flow charts just detected of row.
Specific implementation mode
The applicant identifies oneself technician in technical field and combines existing known technology, and according to disclosed in present specification
Content the present invention can be realized.
The present invention is described in further detail with reference to embodiment, embodiments of the present invention are not limited thereto.
The greatest measure interval value that maximum detection range, i.e. A/D conversion chips can be detected.
Embodiment 1：
A kind of analog quantity detection circuit that detection range is adaptive, as shown in Figure 1, including sequentially connected front-end processing
Circuit, A/D conversion chips and MCU processor；
The front-end processing circuit receives input analog quantity, completes filtering operation, filter out unwanted noise signal, and
The analog signals of filtering clutter signal are input in A/D conversion chips；
The A/D conversion chips receive the analog signals come to front-end processing circuit, and complete corresponding AD conversion,
It is controlled simultaneously by MCU processor；
The MCU controllers, send a control signal in A/D conversion chips, and change is adjusted in real time according to realistic simulation amount
The detection range of A/D conversion chips.
Embodiment 2：
The present embodiment is further optimized based on the above embodiments, further, to better implement the present invention
The circuit, the A/D conversion chips are single channel A/D conversion chips or multichannel A/D conversion chips, the multichannel A/D
The port number of conversion chip is N, and N is natural number.
Embodiment 3：
The present embodiment is to advanced optimize based on any of the above embodiments, further, preferably to realize this
The circuit is invented, the MCU processor is microcontroller or DSP devices or FPGA device or CPLD devices.
Embodiment 4：
A kind of analog quantity detecting method that detection range is adaptive, it is characterised in that：Include the following steps：
Step A, the detection range of A/D conversion chips is set；
Step B, primary just detection is carried out to the analog quantity being input in A/D conversion chips；
Step C, the first detected value that the step B is judged by MCU processor determines that one is suitble to the first detected value most
Small detection range；
Step D after step C, then carries out an analog quantity detection, exports transformation result；
The A/D conversion chips are single channel A/D conversion chips or multichannel A/D conversion chips, and the multichannel A/D turns
The port number for changing chip is N, and N is natural number.
Embodiment 5：
The present embodiment is further optimized based on the above embodiments, further, to better implement the present invention
Detection range in the step A, for single channel A/D conversion chips, is set as maximum, i.e., by detection range by the method
It is set as -10V~+10V or corresponding current ranges；For multichannel A/D conversion chips, N number of channel is set as different
Detection range, i.e., by the detection range in N number of channel be respectively set to -10V~+10V, -5V~+5V, -2.5V~+2.5V, 0~
10V, 0~5V etc. or corresponding current range, it is inconvenient exhaustive herein；And set one of channel to maximum detection range,
Set the maximum detection range in one of channel to -10V~+10V or corresponding current ranges.
Embodiment 6：
The present embodiment is further optimized based on the above embodiments, further, to better implement the present invention
The method, it is described set one of channel to maximum detection range on the basis of will further be set as maximum detection
The detection range in the channel of range is divided into N number of minizone detection range, i.e., be respectively set to N number of minizone detection range-
10V~+10V, -5V~+5V, -2.5V~+2.5V, 0~10V, 0~5V etc. or corresponding current range, it is inconvenient exhaustive herein.
Embodiment 7：
The present embodiment is advanced optimized on the basis of embodiment 4 or 5 or 6, further, preferably to realize this hair
Bright the method when carrying out primary just detection to the analog quantity in single channel A/D conversion chips, does not export in the step B
The transformation result of this time；It includes only to being set as maximum to carry out primary just detection to the analog quantity in multichannel A/D conversion chips
The analog quantity in the channel of detection range carries out primary just detection and carries out primary just detection to the analog quantity in all channels.
Embodiment 8：
The present embodiment is further optimized based on the above embodiments, further, to better implement the present invention
The method, the step C include method in detail below：
Step C.1, be directed to single channel A/D conversion chips, the first detected value of the step B is judged by MCU processor, really
Fixed one is suitble to the minimum detection limits of the first detected value and carries out Initialize installation to single channel A/D conversion chips again；
Step C.2, be directed to multichannel A/D conversion chips, including：
C.2.1, at the beginning of the analog quantity in the channel only to being set as maximum detection range carries out once step when detection, passes through
MCU processor judges the first detected value in the channel for being set as maximum detection range, determines that one is suitble to be set as maximum detection range
Just the minimum detection limits of detected value and described corresponding to minimum detection limits are set as the logical of maximum detection range in channel
Road；
Step C.2.2, when carrying out primary just detection to the analog quantity in all channels, judged by MCU processor N number of logical
Road just after detected value, determines a suitable N number of channel just corresponding to the minimum detection limits and minimum detection limits of detected value
Channel N.
The minimum detection limits, you can to make full use of A/D to convert the range of digit precision；If detecting input mould
Analog quantity is+2V, and minimum detection limits (i.e. minimum detection interval) can select -2.5V~+2.5V；If the simulation of detection
Amount is+9V, and minimum detection limits (i.e. minimum detection interval) can select 0~+10V；If the analog quantity of detection is -4V,
Minimum detection limits (i.e. minimum detection interval) can select -5V~+5V, inconvenient exhaustive herein.
Embodiment 9：
The present embodiment is further optimized based on the above embodiments, further, to better implement the present invention
The method, in the step D, for multichannel A/D conversion chips, include to be set as the channel of maximum detection range again into
Analog quantity of row detects or/and is carried out again to channel N an analog quantity detection.
Embodiment 10：
As shown in Fig. 2, for the adaptive analog quantity detection of the detection range of single channel A/D conversion chips, after beginning,
Include the following steps：
Step A, maximum detection interval is set, the detection range of single channel A/D conversion chips is set as maximum；
Step B, introductory die analog quantity is read, an initial survey is carried out to the analog quantity being input in single channel A/D conversion chips
When survey, but the transformation result of this time is not exported；
Step C, the affiliated smallest interval of judgement analog quantity and adjustment detection interval, judge the step B by MCU processor
First detected value, determine one be suitble to the first detected value minimum detection limits and again to single channel A/D conversion chips progress
Initialize installation；
Step D after step C, then carries out an analog quantity and detects and read accurate analog quantity, output transformation result, that is, defeated
Go out analog quantity to application end.
Embodiment 11：
As shown in figure 3, for the adaptive analog quantity detection of the detection range of multichannel A/D conversion chips, after beginning,
The case where primary just detection only is carried out to the analog quantity of single channel when carrying out analog quantity detection using multichannel A/D conversion chips
Under, include the following steps：
Step A, each channel difference detection interval is set, set channel 1 (also can the channels 2-N in any channel) to be maximum
Detection interval；Rest channels are set as different detection intervals and the different subintervals in channel 1；
Step B, 1 analog quantity of channel is read, the analog quantity to being input to multichannel A/D conversion chips internal channel 1 carries out one
Detection at the beginning of secondary；
Step C, judge the affiliated smallest interval of analog quantity, the just detected value of channel 1 is judged by MCU processor, according to channel 1
Different subintervals determine suitable channel 1 just section corresponding to the minimum detection limits and minimum detection limits of detected value
Channel；
Step D after step C, then carries out the accurate analog quantity that an analog quantity detected and read the channel in corresponding section,
It exports transformation result and exports analog quantity to application end.
Embodiment 12：
As shown in figure 4, for the adaptive analog quantity detection of the detection range of multichannel A/D conversion chips, after beginning,
The case where primary just detection is carried out to the analog quantity in all channels when carrying out analog quantity detection using multichannel A/D conversion chips
Under, include the following steps：
Step A, each channel difference detection interval is set, the detection interval range in each channel is set as different, together
When set one of channel to maximum detection interval；
Step B, all channel analogy amounts are read, to being input to the analog quantity in all channels in multichannel A/D conversion chips
Carry out primary just detection；
Step C, judge the affiliated smallest interval of analog quantity, the first detected value in all channels is judged by MCU processor, and
Determine the channel x in section corresponding to the minimum detection limits and minimum detection limits of all detected values；
Step D after step C, then carries out the accurate simulation that an analog quantity detected and read the channel x in corresponding section
Amount, output transformation result export analog quantity to application end.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is every according to
According to the technical spirit of the present invention to any simple modification, equivalent variations made by above example, the protection of the present invention is each fallen within
Within the scope of.
Claims (5)
1. a kind of analog quantity detecting method that detection range is adaptive, it is characterised in that：
The adaptive analog quantity detection of detection range can be realized by the adaptive analog quantity detection circuit of detection range；
The analog quantity detection circuit includes sequentially connected front-end processing circuit, A/D conversion chips and MCU processor；
The front-end processing circuit receives input analog quantity, completes filtering operation, filters out unwanted noise signal, and will filter
The analog signals of noise wave removing signal are input in A/D conversion chips；
The A/D conversion chips receive the analog signals come to front-end processing circuit, and complete corresponding AD conversion, simultaneously
It is controlled by MCU processor；
The MCU processor is sent a control signal in A/D conversion chips, is adjusted in real time according to realistic simulation amount and is changed A/D turns
Change the detection range of chip；
The A/D conversion chips are single channel A/D conversion chips or multichannel A/D conversion chips, and the multichannel A/D converts core
The port number of piece is N, and N is natural number；
The MCU processor is microcontroller or DSP devices or FPGA device or CPLD devices；
The analog quantity detecting method, includes the following steps：
Step A, the detection range of A/D conversion chips is set；
Step B, primary just detection is carried out to the analog quantity being input in A/D conversion chips；
Step C, the first detected value that the step B is judged by MCU processor determines a minimum inspection for being suitble to the first detected value
Survey range；
Step D after step C, then carries out an analog quantity detection, exports transformation result；
In the step B, when carrying out primary just detection to the analog quantity in single channel A/D conversion chips, this time is not exported
Transformation result；It includes only to being set as maximum detection model to carry out primary just detection to the analog quantity in multichannel A/D conversion chips
The analog quantity in the channel enclosed carries out primary just detection and carries out primary just detection to the analog quantity in all channels；
The step C includes method in detail below：
Step C.1, be directed to single channel A/D conversion chips, the first detected value of the step B is judged by MCU processor, determines one
It is a to be suitble to the minimum detection limits of the first detected value and Initialize installation is carried out to single channel A/D conversion chips again；
Step C.2, be directed to multichannel A/D conversion chips, including：
C.2.1, at the beginning of the analog quantity in the channel only to being set as maximum detection range carries out once step when detection, passes through MCU
Processor judges the first detected value in the channel for being set as maximum detection range, determines that one is suitble to be set as the logical of maximum detection range
The minimum detection limits of the first detected value in road and the channel for being set as maximum detection range corresponding to minimum detection limits；
Step C.2.2, when carrying out primary just detection to the analog quantity in all channels, at the beginning of judging N number of channel by MCU processor
After detected value, determine that one is suitble to N number of channel just minimum detection limits of detected value and the channel corresponding to minimum detection limits
N。
2. a kind of adaptive analog quantity detecting method of detection range according to claim 1, it is characterised in that：The A/
D conversion chips are single channel A/D conversion chips or multichannel A/D conversion chips, the port number of the multichannel A/D conversion chips
For N, and N is natural number.
3. a kind of adaptive analog quantity detecting method of detection range according to claim 2, it is characterised in that：The step
In rapid A, for single channel A/D conversion chips, detection range is set as maximum；It, will be N number of for multichannel A/D conversion chips
Channel is set as different detection ranges, and sets one of channel to maximum detection range.
4. a kind of adaptive analog quantity detecting method of detection range according to claim 3, it is characterised in that：Described
One of channel is set to will to be further set as the inspection in the channel of maximum detection range on the basis of maximum detection range
It surveys range and is divided into N number of minizone detection range.
5. a kind of adaptive analog quantity detecting method of detection range according to claim 1, it is characterised in that：The step
Include carrying out an analog quantity inspection again to being set as the channel of maximum detection range for multichannel A/D conversion chips in rapid D
Survey or/and carried out again to channel N an analog quantity detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510383310.0A CN105159182B (en) | 2015-07-02 | 2015-07-02 | A kind of analog quantity detection circuit and detection method that detection range is adaptive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510383310.0A CN105159182B (en) | 2015-07-02 | 2015-07-02 | A kind of analog quantity detection circuit and detection method that detection range is adaptive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105159182A CN105159182A (en) | 2015-12-16 |
| CN105159182B true CN105159182B (en) | 2018-08-14 |
Family
ID=54800069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510383310.0A Active CN105159182B (en) | 2015-07-02 | 2015-07-02 | A kind of analog quantity detection circuit and detection method that detection range is adaptive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105159182B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114325341B (en) * | 2021-12-31 | 2023-12-15 | 北京小马智行科技有限公司 | Test equipment and test system of circuit board |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8378872B2 (en) * | 2011-03-31 | 2013-02-19 | Rosemount Inc. | Dynamically adjusted A/D resolution |
| US20140312909A1 (en) * | 2013-04-17 | 2014-10-23 | Ge Intelligent Platforms, Inc. | Programmable contact input apparatus and method of operating the same |
| CN104267233A (en) * | 2014-09-29 | 2015-01-07 | 国家电网公司 | Program control self-adaption switching circuit of meter ranges and switching control method thereof |
-
2015
- 2015-07-02 CN CN201510383310.0A patent/CN105159182B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105159182A (en) | 2015-12-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103743944B (en) | A kind of real effective combined-voltage measuring method of automatic identification signal type | |
| CN100583644C (en) | Integrating A/D convertion method and its A/D converter | |
| CN106685421B (en) | Analog signal acquisition method and device | |
| CN101521755A (en) | Cmos image sensor reading circuit and reading method | |
| CN105301627B (en) | A kind of energy spectrum analysis method, energy spectrum analysis system and gamma-ray detection system | |
| CN105159182B (en) | A kind of analog quantity detection circuit and detection method that detection range is adaptive | |
| CN109471154B (en) | Small-size GM count pipe wide range monitoring instrument | |
| CN107782964A (en) | Alternative output pulse signal frequency and measuring system, the measuring method counted | |
| CN205123711U (en) | Analog -to -digital conversion chip volume production test circuit | |
| CN103384152A (en) | Analog-digital converter, analog-digital conversion method and integrated circuit chip | |
| CN106130495A (en) | A kind of collection of simulant signal system and acquisition method | |
| CN207586312U (en) | A kind of digital frequency meter based on FPGA | |
| CN109936360A (en) | Pulse counting equipment and radiation detecting system | |
| CN104459591B (en) | Automatic testing device of direct detection type radiometer | |
| CN106324273B (en) | Using the processing method for the angular velocity data that angular speed detecting apparatus obtains | |
| CN106571826B (en) | A kind of system and method improving single-chip microcontroller analog-digital converter dynamic range | |
| CN106712858B (en) | A kind of signal processing system and signal processing method | |
| CN202710695U (en) | Cable detector | |
| CN109029609B (en) | Flow metering method and device of water purifying equipment | |
| CN107104658A (en) | A kind of Filtering Template reconfigurable filtering method and device | |
| CN208063179U (en) | A kind of gathered data processing system applied to security monitoring device | |
| CN106597100B (en) | A kind of interpolation FFT estimation method of the Wide Area Power dynamic frequency | |
| CN105739338A (en) | Integrated circuit bypass signal difference amplification sampling system and acquisition method | |
| CN106877870A (en) | Adc circuit and its method for sampling | |
| CN106771737B (en) | A kind of electrically controlled attenuator Test System for Characteristic Curve and test method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |