CN206515401U - A kind of hand-held Phase Detector - Google Patents
A kind of hand-held Phase Detector Download PDFInfo
- Publication number
- CN206515401U CN206515401U CN201621125627.0U CN201621125627U CN206515401U CN 206515401 U CN206515401 U CN 206515401U CN 201621125627 U CN201621125627 U CN 201621125627U CN 206515401 U CN206515401 U CN 206515401U
- Authority
- CN
- China
- Prior art keywords
- circuit
- signal processor
- digital signal
- big dipper
- signal
- 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
Abstract
The utility model provides a kind of hand-held Phase Detector, the wherein described even input circuit of light is connected with signal conditioning circuit, the signal conditioning circuit is connected with digital signal processor, the RTC circuit is connected with digital signal processor interactive mode, the antenna input circuit is connected with big dipper module, the big dipper module is connected with digital signal processor interactive mode, the bluetooth module, display unit, data storage is connected with digital signal processor interactive mode respectively, the power circuit is the RTC circuit, digital signal processor, big dipper module, bluetooth module, display unit, data storage, light idol input circuit, signal conditioning circuit provides power supply.The utility model believes that one precision of generation reaches the software clock signal of Millisecond with reference to second lock-out pulse, completes accurately to detect the phase state of three-phase by receiving Big Dipper time signal.
Description
Technical field
The utility model is related to automobile AC motor and frequency converter field, particularly a kind of hand-held Phase Detector
And detection method.
Background technology
In automobile AC motor and frequency converter production process, the normal operation of the phase ordered pair equipment of three-phase alternating current have to
Important influence is closed, is not intended to opposite power supply phase sequence occur under many circumstances.Before equipment or instrument are debugged, enter
The correct phase sequence identification of row, to ensure being smoothed out for test, meanwhile, in test process, the three-phase produced to frequency converter is just
String phase of ac signal is detected, by measuring the phase difference of frequency converter output voltage, and the output characteristics to frequency converter is entered
Assess the performance verification with motor in ground.
Prior art detects and differentiated the method for phase order of 3-phase AC, the shortcomings of there is erroneous judgement and complicated method of discrimination.
As such as Publication No. CN101320063A, the patent institute of utility model entitled " three-phase alternating current phase sequence detection apparatus and method "
Disclosed detection method, this method is based on synchronous rotating frame principle, and implementation process is too complicated.And for example Publication No.
CN200910178268.3, utility model entitled " method for distinguishing three-phase alternating current phase sequences " passes through periodicity collection three-phase alternating current
Magnitude of voltage, and judge its vector value on the occasion of or negative value judge three-phase alternating current for positive or negative, in voltage harmonic distortion or phase
Position is unable to reliable recognition when having deviation, while can not be detected to the phase state that three-phase is exported.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of hand-held Phase Detector, it is occasionally defeated that it includes light
Enter circuit, signal conditioning circuit, RTC circuit, antenna input circuit, big dipper module, digital signal processor, power circuit, indigo plant
Tooth module, display unit, data storage circuitry；
The even input circuit of the light is connected with signal conditioning circuit, the signal conditioning circuit and digital signal processor
It is connected, the RTC circuit is connected with digital signal processor interactive mode, and the antenna input circuit is connected with big dipper module
Connect, the big dipper module is connected with digital signal processor interactive mode, the bluetooth module, display unit, data storage point
It is not connected with digital signal processor interactive mode, the power circuit is the RTC circuit, digital signal processor, Big Dipper mould
The even input circuit of block, bluetooth module, display unit, data storage, light, signal conditioning circuit provide power supply.
It is preferred that the antenna input circuit is input to the Big Dipper mould after being received, amplified to Big Dipper signal, being filtered
Block, from the big dipper module to digital signal processor transmit Big Dipper time signal, while from second synchronization pulse port to
Digital signal processor provides the second synchronizing signal that a precision is better than 50ns.
It is preferred that the second synchronizing signal is synchronized to the RTC circuit by the digital signal processor timing, it is described
RTC circuit provides standby clock signal for digital signal processor, when the antenna input circuit does not receive Big Dipper signal,
The RTC circuit provides clock signal for the digital signal processor.
It is preferred that described three-phase ac signal is inputted by the even circuit of light, when AC signal zero crossing, light occasionally ends,
A pulse signal is produced in its secondary, the interrupting input port of digital processing unit is input to, a trigger signal is produced, is counted
Word signal processor gathers and records the current temporal information for being accurate to millisecond.
It is preferred that the three-phase alternating current zero-crossing timing information that recorded is saved in number by described digital signal processor respectively
According to memory cell, after signal acquisition terminates, according to the time difference of each group signal zero passage, the phase difference and phase sequence of each phase are calculated
Information, is shown by the display unit.
It is preferred that the data message of acquisition and recording is sent to outside by described digital signal processor by bluetooth module
Intelligent terminal is analysed.
The utility model has the advantages that：
The utility model believes one precision of generation up to Millisecond by receiving Big Dipper time signal with reference to second lock-out pulse
Software clock signal, during using three-phase ac signal zero passage, the characteristics of light occasionally ends, a pulse letter is produced in the even secondary of light
Number, the interrupting input port of digital processing unit is input to, trigger signal is produced, digital signal processor is acquired to the signal
And record the current temporal information for being accurate to millisecond.Data storage cell is saved in, after signal acquisition terminates, to three groups of numbers
According to being analyzed, according to the time difference of each group zero passage, the phase difference and phase sequence information of each phase are calculated, is carried out by display unit
Display.
Certainly, implement any product of the present utility model to it is not absolutely required to while reaching all the above advantage.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the utility model embodiment, make required for being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present utility model,
For those of ordinary skill in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings
Other accompanying drawings.
The hand-held Phase Detector composition frame chart that Fig. 1 provides for the utility model embodiment；
Fig. 2 is occasionally inputted and signal conditioning circuit schematic diagram for the light that the utility model embodiment is provided；
The pulse signal figure for the occasionally output of each phase zero passage time that Fig. 3 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The all other embodiment obtained, belongs to the scope of the utility model protection.
As shown in figure 1, the utility model embodiment provides a kind of hand-held Phase Detector, it includes light occasionally input electricity
Road, signal conditioning circuit, RTC circuit, antenna input circuit, big dipper module, digital signal processor, power circuit, bluetooth mould
Block, display unit, data storage circuitry；
The even input circuit of the light is connected with signal conditioning circuit, the signal conditioning circuit and digital signal processor
It is connected, the RTC circuit is connected with digital signal processor interactive mode, and the antenna input circuit is connected with big dipper module
Connect, the big dipper module is connected with digital signal processor interactive mode, the bluetooth module, display unit, data storage point
It is not connected with digital signal processor interactive mode, the power circuit is the RTC circuit, digital signal processor, Big Dipper mould
The even input circuit of block, bluetooth module, display unit, data storage, light, signal conditioning circuit provide power supply.
As shown in Fig. 2 A, B, C three-phase ac signal are inputted by the even circuit of light, when AC signal zero crossing, light is occasionally cut
Only, a pulse signal is produced in its secondary, by taking A phases therein as an example, the negative half period of ac input signal passes through resistance R1, light
Even T2 formation loop, light idol T2 conductings, during positive half cycle, ac input signal passes through resistance R1, light idol T1 formation loop, light idol T1
Conducting.When light is occasionally turned on, R2 and three state buffer U1 input is low level, and three state buffer U1 is output as low, works as friendship
The negative half period or positive half cycle for flowing signal terminate, during signal zero passage, light idol T2 or T1 cut-off, R2 and three state buffer U1 input
For high level, three state buffer U1 is output as height, produced on resistance R3 voltage jump signal Ta0, Ta1, Ta2,
Ta3.And so on.As shown in figure 3, B phases are identical with the input principle of C phases, and when the light of B phases and C phases occasionally ends, three state buffer
Input be high level, three state buffer is output as height, produced on resistance a voltage jump signal Tb0, Tb1,
Tb2, Tb3 and Tc0, Tc1, Tc2, Tc3.Three-phase input skip signal is connect by three input ports of digital signal processor
Enter, when input signal produces rise saltus step, trigger processor is once sampled, and is handled accordingly.Enter to
The interrupting input port of digital processing unit, produces a trigger signal, is gathered by digital signal processor.
In the front end of big dipper module, there are an antenna input circuit, including GPS double ceramic antenna, radio-frequency front-end low noises partially
Acoustic amplifier, SAW filter, Big Dipper satellite signal is received, amplified, filter after be input to UM220III Big Dipper moulds
Block, transmits Big Dipper time signal, it transmits frequency can be with by SCI interfaces from UM220III big dipper modules to digital timing signal
Configured, led to when digital signal processor periodically receives UM220III big dipper modules by SCI interfaces by digital processing unit
Cross after the time that SCI interfaces are sended over, by the time as current system time, and by the data synchronization updating to RTC
In real-time clock module.When hand-held Phase Detector, which is worked indoors or received, can not arrive the place of Big Dipper signal, number is fixed
Signal processor does not receive the Big Dipper time, can produce a reception timeout signal, after time-out is received, digital signal processor
The temporal information between is obtained from RTC block.
In the inside of digital signal processor, a soft clock also is generated using software interrupt, its temporal resolution is milli
Second precision, when three-phase input signal is occasionally isolated by light, and produces rising edge saltus step in the input port of digital signal processor
When, triggering number determines signal processor and produces interrupt signal, records the time value (millisecond value) of soft clock when the saltus step is produced, uses
Analytic operation is carried out to data by the timestamp after sampling terminates in digital signal processor.In order to prevent software accumulation mistake
Difference, causes time value drift, in this programme, and one is exported using the second lock-out pulse output port of UM220III big dipper modules
High-precision 1PPS signals, are connected with the input capture port of digital signal processor, in being produced using its rising edge signal
It is disconnected to update the synchronizing information into soft clock module, complete the synchronized update to soft clock.
In the outside of digital signal processor, there is provided the ferroelectric memory of a SPI interface, digital signal processor exists
During acquisition phase information, to by the data message of generation, being classified by block, packing is stored in internal RAM, ferroelectric memory
Feature is infinitely number of times to write, while writing speed is fast, can realize that data are stored in collection in this programme, in data
The data in RAM are saved in external data memory while collection, after data acquisition terminates, pressed by outside
Key trigger signal, digital signal processor carries out batch reading, the number of reading to the sampled data being stored in data storage
The source that signal is contained in, the time produced, length, the check value of record etc., digital signal processor completes data batch
Measure after reading and verify correctly, packet is analyzed data, and analysis result is sent to display unit and shown.
A low cost is additionally used in the utility model embodiment, the bluetooth module of low-power consumption passes through SCI interfaces and number
Word signal processor is connected, and when processor sends information to bluetooth module, module activation simultaneously enters working condition, and user passes through
Mobile phone A PP application software is Activated Phone bluetooth, after successful connection, and digital signal processor be able to will be adopted by bluetooth module batch
Sample data or analysis result are sent to cellphone subscriber, to data carry out deeper into analysis.
The utility model preferred embodiment disclosed above is only intended to help and illustrates the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, it is only described embodiment that the utility model is not limited yet.Obviously, according to this theory
The content of bright book, can make many modifications and variations.This specification is chosen and specifically describes these embodiments, is in order to preferably
Principle of the present utility model and practical application are explained, so that skilled artisan can be best understood by and utilize this
Utility model.The utility model is only limited by claims and its four corner and equivalent.
Claims (6)
1. a kind of hand-held Phase Detector, it is characterised in that including the even input circuit of light, signal conditioning circuit, RTC circuit,
Antenna input circuit, big dipper module, digital signal processor, power circuit, bluetooth module, display unit, data storage circuitry；
The even input circuit of the light is connected with signal conditioning circuit, and the signal conditioning circuit is connected with digital signal processor
Connect, the RTC circuit is connected with digital signal processor interactive mode, and the antenna input circuit is connected with big dipper module, institute
Big dipper module and digital signal processor interactive mode is stated to be connected, the bluetooth module, display unit, data storage respectively with number
Word signal processor interactive mode connection, the power circuit is the RTC circuit, digital signal processor, big dipper module, bluetooth
The even input circuit of module, display unit, data storage, light, signal conditioning circuit provide power supply.
2. hand-held Phase Detector as claimed in claim 1, it is characterised in that the antenna input circuit is to Big Dipper signal
Received, amplified, filter after be input to the big dipper module, from the big dipper module to digital signal processor transmit the Big Dipper
Time signal, while it is synchronous to provide second of the precision better than 50ns from second synchronization pulse port to digital signal processor
Signal.
3. hand-held Phase Detector as claimed in claim 2, it is characterised in that the digital signal processor is regularly by institute
State a second synchronizing signal and be synchronized to the RTC circuit, the RTC circuit provides standby clock signal for digital signal processor,
When the antenna input circuit does not receive Big Dipper signal, the RTC circuit provides clock letter for the digital signal processor
Number.
4. hand-held Phase Detector as claimed in claim 2, it is characterised in that three-phase ac signal is defeated by the even circuit of light
Enter, when AC signal zero crossing, light occasionally ends, and produces a pulse signal in its secondary, is input to the interruption of digital processing unit
Input port, produces a trigger signal, is gathered by digital signal processor and records the current time for being accurate to millisecond letter
Breath.
5. hand-held Phase Detector as claimed in claim 4, it is characterised in that described digital signal processor will be recorded
To three-phase alternating current zero-crossing timing information be saved in data storage cell respectively, after signal acquisition terminates, according to each group signal
The time difference of zero passage, the phase difference and phase sequence information of each phase are calculated, is shown by the display unit.
6. hand-held Phase Detector as claimed in claim 5, it is characterised in that described digital signal processor will be gathered
The data message of record is sent to external smart terminal by bluetooth module and analysed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621125627.0U CN206515401U (en) | 2016-10-14 | 2016-10-14 | A kind of hand-held Phase Detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621125627.0U CN206515401U (en) | 2016-10-14 | 2016-10-14 | A kind of hand-held Phase Detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206515401U true CN206515401U (en) | 2017-09-22 |
Family
ID=59861202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621125627.0U Active CN206515401U (en) | 2016-10-14 | 2016-10-14 | A kind of hand-held Phase Detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206515401U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324372A (en) * | 2016-10-14 | 2017-01-11 | 合肥创宇新能源科技有限公司 | Handheld phase detector |
-
2016
- 2016-10-14 CN CN201621125627.0U patent/CN206515401U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324372A (en) * | 2016-10-14 | 2017-01-11 | 合肥创宇新能源科技有限公司 | Handheld phase detector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106021165B (en) | A kind of LIN bus encoding/decoding, triggering and analytical technology | |
| CN108931756B (en) | Power failure detection method for electric energy meter | |
| CN101282526A (en) | Handset standby current, standby time as well as test equipment for charging flow | |
| CN114325250B (en) | Partial discharge detection device and method integrating positioning detection and map detection functions | |
| CN104749636A (en) | Distributed slot wave seismic prospecting system and prospecting method thereof | |
| CN105318918A (en) | A non-magnetic flow metering device and a metering method thereof | |
| CN104459435A (en) | Wiring verification method and device for transformer substation | |
| CN206515401U (en) | A kind of hand-held Phase Detector | |
| CN106154062A (en) | A kind of wireless telemetering nuclear phase instrument | |
| CN106680617A (en) | Wireless sampling-based electric energy quality test and analysis device | |
| CN104238405A (en) | Data acquiring method and high-speed data acquirer for detecting explosive shock waves | |
| CN106707034A (en) | Pulse signal detection method based on Windows system function and multi-thread technology | |
| CN110109043A (en) | Electric energy meter detection method, detection terminal and computer readable storage medium | |
| CN110244345A (en) | Three-dimensional imaging tunnel geological prediction instrument and forecasting procedure | |
| CN106707307B (en) | A kind of satellite navigation half cycle transition detection method and device | |
| CN102780472B (en) | FPGA is utilized to realize the method for the brand-new lock-out pulse measurement of vector network analyzer | |
| CN110160594A (en) | A kind of NB-IoT mould group with intellectual water meter dedicated pin | |
| CN202083763U (en) | Electronic device and broken circuit detecting system thereof | |
| CN104570838A (en) | Asynchronous external triggering device and method for multipath trigger time delay | |
| CN112130485A (en) | High-speed multi-channel synchronous acquisition device and method | |
| CN106324372A (en) | Handheld phase detector | |
| CN203788304U (en) | Device for testing function of hardware interface | |
| CN111856163B (en) | Non-contact single-rod asynchronous phase checking method | |
| CN203232104U (en) | Portable motor noise analyzer | |
| CN109256998A (en) | Control the method and system and servo motor of current of electric sampling with high precision |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |