CN109541284A - A kind of Wrist wearable type integrated electrical measurement test macro - Google Patents
A kind of Wrist wearable type integrated electrical measurement test macro Download PDFInfo
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- CN109541284A CN109541284A CN201811389203.9A CN201811389203A CN109541284A CN 109541284 A CN109541284 A CN 109541284A CN 201811389203 A CN201811389203 A CN 201811389203A CN 109541284 A CN109541284 A CN 109541284A
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- signal
- type integrated
- wearable type
- integrated electrical
- wrist wearable
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R13/00—Arrangements for displaying electric variables or waveforms
- G01R13/20—Cathode-ray oscilloscopes
- G01R13/22—Circuits therefor
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- General Physics & Mathematics (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The present invention relates to a kind of Wrist wearable type integrated electrical measuring system, key technology research and system prototype function are embodied as top priority, which is characterized in that using PSoC5 LP as hardware development platform, using PSoC Creator as software platform, construct entire engineering framework.On this basis, addition Memory LCD is that information shows that peripheral hardware completes information exchange task using WiFi/BT module for the drafting of waveform and the display of data.Acquisition data are calculated with MCU powerful operational capability, are handled, realize the quantization and spectrum analysis of voltage signal.Abundant On-Chip peripheral realizes the conversion between the high-speed transfers of data, modulus signal, realizes the function that waveform occurs.Finally various functions are integrated, it is integrated that system function are completed in the form of state machine, and operated to system with the form of physical button.
Description
Technical field
The present invention relates to a kind of Wrist wearable type integrated electricals to measure test macro, belongs to wearable measuring device technology neck
Domain.
Background technique
As Information technology technology high-speed develops, oscillograph is used as a kind of widely used electric measuring device, from
Initial analog oscilloscope develops to digital storage oscilloscope, then virtual oscilloscope and portable oscilloscopel finally,
There is different degrees of development in terms of function, performance and portable degree.If oscillograph can be real in the form of wearable device
The function of existing electric measurement test can all bring great convenience, and the interaction of information for field operation, outdoor measurement
The shared working efficiency that can be improved group.Wrist wearable type integrated electrical measurement test macro, which had both been able to satisfy the convenient of single user, to be made
With, and be able to satisfy short-range information and share, it is the fine supplement to the measurement test equipment such as traditional form oscillograph, outdoors
In operation and on-the-spot test environment, there is certain market demand, not only have feature easy to use, that test is flexible, moreover it is possible to
It is enough effectively to share data.Therefore how to make oscillograph easy to carry, test is flexibly current an emphasis and difficulty
Point.Design that a precision is high, high-efficient and easily portable oscillograph is to realize Wrist wearable type integrated electrical measurement test equipment
It is crucial.
Summary of the invention
The purpose of the present invention is: so that measurement test equipment is easily portable, test is flexible.
In order to achieve the above object, the technical solution of the present invention is to provide a kind of Wrist wearable type integrated electricals to measure test system
System, which is characterized in that the Wrist wearable type integrated electrical communicated measurement test equipment is established including mobile terminal and with mobile terminal, it should
Wrist wearable type integrated electrical measures test equipment
Collection of simulant signal input unit is used for collection voltages signal waveform, collected waveform voltage signal is exported
To analog front circuit；
Analog front circuit translates for realizing the decaying of the waveform voltage signal of input and current potential, makes up voltage range
Less than normal and unipolar defect, analog front circuit export signal to ADC；
ADC for received signal to be converted to digital signal, then is arrived by direct memory access channel high speed storing
In RAM；
Data processing unit, after reading data in RAM, the instruction that input by input unit according to user: analysis is believed
Number frequency composition or waveform needed for generating signal or calculate the voltage magnitude of signal, data processing unit is by the number of output
According to being sent to display unit and/or wireless communication unit；
The instruction for receiving the instruction of user's input, and is sent to data processing unit by input unit；
Display unit, for showing the data received from data processing unit；
Wireless communication unit, for sending out the data received from data processing unit to mobile terminal by wireless network
It send.
Preferably, the collection of simulant signal input unit tests probe collection voltage signal wave using 2 analog signals
Shape.
Preferably, the display unit uses Memory LCD, Memory LCD to pass through SPI serial line interface and the data
Processing unit communication.
Preferably, the wireless communication unit uses WiFi/BT dual-mode wireless module.
Preferably, when the frequency composition of the data processing unit analysis signal, using in quick Fu of the fast algorithm of DFT
Leaf transformation.
Preferably, the signal of waveform needed for the data processing unit is generated using Ture arb technology.
Compared with prior art, advantageous effects of the invention include but is not limited to:
(1) short-distance wireless communication technology WiFi and BLE realizes mobile terminal to the reality of measured waveform and spectrum information
When monitor；
(2) it uses Memory LCD as display module, is used convenient for outdoor and field operation；
(3) use PSoC5 LP as development platform, the configurability with high flexible is integrated with by piece micro process
The configurable digital and analog circuit of device.Have the characteristics that peripheral resources abundant and low-power consumption.
Detailed description of the invention
Fig. 1 is a kind of Wrist wearable type integrated electrical measurement test provided in an embodiment of the present invention and its mobile terminal；
Fig. 2 is system architecture diagram of the invention；
Fig. 3 is single analog front end conditioning circuit of the invention；
Fig. 4 is oscillography functional flow diagram in the present invention；
Fig. 5 is the UI schematic diagram of application software of mobile terminal in the present invention；
Fig. 6 is signal occurring principle figure in the present invention；
Fig. 7 is the finite state machine of function switch of the invention.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
As shown in Figures 1 and 2, the present invention provides a kind of Wrist wearable type integrated electrical measuring system, including Wrist wearable type are integrated
Electric measurement equipment 14 and mobile terminal 12.Mobile terminal 12 and Wrist wearable type integrated electrical measuring device 14 are integrated by Wrist wearable type
The WiFi/BT dual-mode wireless module 11 of electric measurement equipment 14 connects.
Wrist wearable type integrated electrical measuring device 14 is by collection of simulant signal input unit, analog front circuit, data processing
Unit, display unit 10, the WiFi/BT dual-mode wireless module 11 of low-power consumption, physical button 5,6,7,8,9 and power supply 13 form.
Since signal acquisition, three phases are successively shown and exported by information processing, data communication, information, form one
Cover complete data flow, realize waveform show, waveform generation, spectrum analysis, voltage measurement and the multiple functions of information sharing.
Module mostly uses low energy-consumption electronic device, the PSoC development platform that cooperation peripheral hardware is abundant, operational capability is strong so that wearing measuring device at
For reality, to meet the demand of the working environments such as outdoor test, in-site measurement.
Collection of simulant signal input unit accesses the input signal of 2 analog channels using 2 analog signal test probes.
Collection of simulant signal input unit is used for collection voltages signal waveform, and collected waveform voltage signal is exported to AFE(analog front end)
Circuit.
A kind of Wrist wearable type integrated electrical measuring system provided by the invention includes following functions: waveform display function, signal
Function, spectrum analysis function, voltage measurement function and information sharing function occurs, is switched over by FreeRTOS and key.
Step A1: pressing the button 5 Elementary Function waveforms and show, acquisition, transmission, processing including waveform signal are calculated and shown
Show.PSoC5 LP can only handle unipolar signal of 0~5V, design simulation front-end circuit realize input attenuated input signal and
Current potential translation, makes up voltage range defect less than normal and unipolar.
Step A2: pressing the button 6 switching spectrum analysis functions, analyzes the frequency constituent of signal.Using in quick Fu
The time series that leaf transformation obtains instrument sampling carries out spectrum analysis.
Step A3: pressing the button 7 switching signals and function occur, and generates different amplitudes, the rule of different frequency or irregular
Waveform electronic equipment.The piece upper module of PSoC5 LP can provide three kinds of sine wave of suggestion, square wave and triangular wave bases
The generation of this wave.
Step A4: 8 switching voltage measurement functions, the voltage magnitude of measuring signal are pressed the button.PSoC5 LP can only handle 0
Unipolar signal of~5V, design simulation front-end circuit realize input attenuated input signal and current potential translation, make up unipolarity
Defect.
Step A5: pressing the button 9 handover information sharing functionalities, the electric signal of acquisition in addition to being shown on MemoryLCD,
Mobile terminal synchronization is sent signal to by WiFi/BT Dual module simultaneously to show.
As shown in figure 3, Wrist wearable type integrated electrical measuring device 14 realize waveform display function include waveform signal acquisition,
Transmission, processing calculate and display.PSoC5 LP can only handle unipolar signal of 0~5V, and design simulation front-end circuit is realized
Attenuated input signal and current potential translation, make up voltage range defect less than normal and unipolar.Input signal is adjusted to suitable model
After enclosing, reuse ADC and be converted into digital signal, then by direct memory access channel (Direct Memory Access,
DMA) then high speed storing is calculated into RAM by the processing of data processing unit, realizes sampled value to LCD pixel coordinate
It calculates.It plans the interface LCD, realizes the display of waveform diagram and relevant information.
As shown in figure 4, reusing ADC after input signal is adjusted to optimum range and being converted into digital signal, then lead to
It crosses direct memory access channel (Direct Memory Access, DMA) high speed storing and, into RAM, then passes through data processing
The processing of unit calculates, and realizes the calculating of sampled value to LCD pixel coordinate.It plans the interface LCD, realizes waveform diagram and related letter
The display of breath.Memory LCD is communicated with PSoC5LP using SPI serial line interface, since Memory LCD is write only device,
Communication port only includes serial clock signal, chip selection signal.External COM reverse signal input and the selection control of COM reversing mode
The operating mode of screen, system generate COM reverse signal using software mode.Remaining port is used for power supply power supply.Using quick
The time series that the sampling of Fourier transform pairs instrument obtains carries out spectrum analysis.6 switching spectrum analysis functions are pressed the button, are analyzed
The frequency constituent of signal.Using fast algorithm Fast Fourier Transform (FFT) (the Fast Fourier of DFT
Transformation, FFT) operand of DFT can be made to shorten one or two of order of magnitude.Systematic selection input inverted order, output are suitable
2 time domain of the base selection fft algorithm of sequence carries out spectrum analysis to input signal.
As shown in fig. 6, system realizes that function occurs for signal using Ture arb technology, wave is read with certain frequency first
Shape signal, waveform needed for then being generated by D/A conversion.Using signal set out DMA transfer data carry out D/A conversion.Then exist
Analog port exports corresponding waveform signal.The piece upper module of PSoC5 LP can provide the sine wave of suggestion, square wave and three
The generation of three kinds of basic waves of angle wave.
As shown in Fig. 2, 14 voltage measurement function of Wrist wearable type integrated electrical measuring device includes the acquisition of voltage signal, passes
Defeated, processing calculates and display.PSoC5 LP can only handle unipolar signal of 0~5V, and design simulation front-end circuit is realized defeated
Enter signal decaying and current potential translation, makes up voltage range defect less than normal and unipolar.Input signal is adjusted to optimum range
Afterwards, reuse ADC and be converted into digital signal, then by direct memory access channel (Direct Memory Access,
DMA) then high speed storing is calculated into RAM by processing, realizes the calculating of sampled value to LCD pixel coordinate.Plan LCD circle
The display of waveform diagram and relevant information is realized in face.
It is shown as shown in fig. 7, the switching of function enters Elementary Function waveform after using Free operating system, power button to open
Show, key 5 can be switched to waveform display function under any transition；Key 6 can be switched to frequency spectrum point under any transition
Analyse function；Key 7 can be switched to waveform under any transition and function occurs, and key 8 can be switched to electricity under any transition
Pressure measurement function；Key 9 can switch the sharing functionality of WiFi or bluetooth.
Claims (6)
1. a kind of Wrist wearable type integrated electrical measures test macro, which is characterized in that established including mobile terminal and with mobile terminal
The Wrist wearable type integrated electrical of communication measures test equipment, and Wrist wearable type integrated electrical measurement test equipment includes:
Collection of simulant signal input unit is used for collection voltages signal waveform, collected waveform voltage signal is exported to mould
Quasi- front-end circuit；
Analog front circuit translates for realizing the decaying of the waveform voltage signal of input and current potential, it is less than normal to make up voltage range
With unipolar defect, analog front circuit exports signal to ADC；
ADC, for received signal to be converted to digital signal, then through direct memory access channel high speed storing into RAM；
The instruction that is inputted by input unit according to user: data processing unit analyzes signal after reading data in RAM
Frequency composition generates the signal of required waveform or calculates the voltage magnitude of signal, and data processing unit sends out the data of output
Give display unit and/or wireless communication unit；
The instruction for receiving the instruction of user's input, and is sent to data processing unit by input unit；
Display unit, for showing the data received from data processing unit；
Wireless communication unit, for sending the data received from data processing unit to mobile terminal by wireless network.
2. a kind of Wrist wearable type integrated electrical as described in claim 1 measures test macro, which is characterized in that the analog signal
It acquires input unit and tests probe collection waveform voltage signal using 2 analog signals.
3. a kind of Wrist wearable type integrated electrical as described in claim 1 measures test macro, which is characterized in that the display unit
Using Memory LCD, Memory LCD is communicated by SPI serial line interface with the data processing unit.
4. a kind of Wrist wearable type integrated electrical as described in claim 1 measures test macro, which is characterized in that the wireless communication
Unit uses WiFi/BT dual-mode wireless module.
5. a kind of Wrist wearable type integrated electrical as described in claim 1 measures test macro, which is characterized in that the data processing
When unit analyzes the frequency composition of signal, using the fast algorithm Fast Fourier Transform (FFT) of DFT.
6. a kind of Wrist wearable type integrated electrical as described in claim 1 measures test macro, which is characterized in that the data processing
The signal of waveform needed for unit is generated using Ture arb technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389203.9A CN109541284A (en) | 2018-11-21 | 2018-11-21 | A kind of Wrist wearable type integrated electrical measurement test macro |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811389203.9A CN109541284A (en) | 2018-11-21 | 2018-11-21 | A kind of Wrist wearable type integrated electrical measurement test macro |
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| CN109541284A true CN109541284A (en) | 2019-03-29 |
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| CN201811389203.9A Pending CN109541284A (en) | 2018-11-21 | 2018-11-21 | A kind of Wrist wearable type integrated electrical measurement test macro |
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| CN205450075U (en) * | 2016-03-25 | 2016-08-10 | 北华航天工业学院 | Long -range mixed territory analog quantity measuring apparatu |
| CN206411166U (en) * | 2016-12-23 | 2017-08-15 | 广州冠超电子科技有限公司 | A kind of handheld digital oscillograph |
| CN206583953U (en) * | 2016-12-21 | 2017-10-24 | 淮北师范大学 | A kind of multifunctional intellectual instrument |
| CN206725629U (en) * | 2017-05-22 | 2017-12-08 | 安徽师范大学 | One kind coordinates bluetooth module movement oscillograph based on smart mobile phone APP |
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2018
- 2018-11-21 CN CN201811389203.9A patent/CN109541284A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204989276U (en) * | 2015-08-21 | 2016-01-20 | 沙祥 | Portable oscilloscope based on bluetooth |
| CN205450075U (en) * | 2016-03-25 | 2016-08-10 | 北华航天工业学院 | Long -range mixed territory analog quantity measuring apparatu |
| CN206583953U (en) * | 2016-12-21 | 2017-10-24 | 淮北师范大学 | A kind of multifunctional intellectual instrument |
| CN206411166U (en) * | 2016-12-23 | 2017-08-15 | 广州冠超电子科技有限公司 | A kind of handheld digital oscillograph |
| CN206725629U (en) * | 2017-05-22 | 2017-12-08 | 安徽师范大学 | One kind coordinates bluetooth module movement oscillograph based on smart mobile phone APP |
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Application publication date: 20190329 |