CN207281275U - A kind of numeral electrical energy measurement bit error rate detection device - Google Patents
A kind of numeral electrical energy measurement bit error rate detection device Download PDFInfo
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- CN207281275U CN207281275U CN201721391293.6U CN201721391293U CN207281275U CN 207281275 U CN207281275 U CN 207281275U CN 201721391293 U CN201721391293 U CN 201721391293U CN 207281275 U CN207281275 U CN 207281275U
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Abstract
The embodiment of the present application discloses a kind of digital electrical energy measurement bit error rate detection device, described device includes signal generation apparatus, binary data source, gaussian random number generator, detector, comparator and error counter, wherein, the signal generation apparatus for producing signal is connected with the input terminal in the binary data source；The output terminal in the binary data source is connected with the comparator, the detector respectively, and two connection circuits are provided between the binary data source and the detector；Two gaussian random number generators are equipped between the comparator and the detector, two gaussian random number generators are connected with two connection circuits respectively；The output terminal of the detector is connected with the comparator；The comparator is connected with the error counter.The detection device accuracy of detection of the application is high, and its simple in structure, low manufacture cost, is easy to use.
Description
Technical field
The invention relates to digital circuit field, more particularly to a kind of digital electrical energy measurement bit error rate detection device.
Background technology
Intelligent grid construction is actively carried out with national, and power grid electrical energy measurement is rapidly to automation, information-based, mutually
Dynamicization direction is developed.Digital transformer substation is by the intelligent primary equipment such as electronic mutual inductor, intelligent switch and with mistake
Journey layer, wall, control unit of standing are built-up, it can be achieved that information gathering, biography for the networking secondary device layering of main element
Defeated, processing and the overall process digitlization operation of output, various functions module, subsystem share unified information platform.It is compared
There is high-performance, high security, high reliability, high economy in traditional transformer substation system, have become substation now
Development trend.
The bit error rate (SER:Symbol error rate) as weighing data data transfer accuracy at the appointed time
Index, is the deciding factor of digital electric energy metered system performance quality.Since in signal transmission, decay changes signal
Voltage, causes signal to be destroyed in the transmission, or since the factors such as noise, the pulse of alternating current, transmission equipment failure are equal
There may be error code, therefore, also there is the frequency being defined as the bit error rate for weighing error code appearance.At present, in the market has use
High frequency bit error rate test system tests the bit error rate in communication network, makes the letter of data bit error rate tester
Follow-up outside is transferred to together or in communication network by emission interface in number generation circuit, then again circuit to bit error code
The signal receiving circuit of rate tester, the data finally received can be contrasted with original data, if data have change,
It is flagged as error code.
However, since high frequency bit error rate test system cost is high, power consumption is big, equipment is complicated, it is unfavorable for carrying；At certain
Under a little specific environments, also needing to add corresponding special construction can just complete to test, and equipment difficulty of test has been significantly greatly increased, thus may be used
See, existing test system availability is not high.
Utility model content
This application provides a kind of digital electrical energy measurement bit error rate detection device, and to solve, prior art device is complicated, makes
The problem of valency is high, practicality is low.
This application provides a kind of digital electrical energy measurement bit error rate detection device, the bit error rate detection device includes signal
Generating means, binary data source, gaussian random number generator, detector, comparator and error counter, wherein,
The signal generation apparatus for producing signal is connected with the input terminal in the binary data source；
The output terminal in the binary data source is connected with the comparator, the detector respectively, the binary system
Two connection circuits are provided between data source and the detector；
Be equipped with two gaussian random number generators between the comparator and the detector, two Gausses with
Machine number generator is connected with two connection circuits respectively；
The output terminal of the detector is connected with the comparator；
The comparator is connected with the error counter.
Optionally, the signal generation apparatus produces data as the sinusoidal signal in the range of (0,1).
Optionally, the sinusoidal signal is handled through decay.
Optionally, the sinusoidal signal superposition white Gaussian noise.
Optionally, it is characterised in that described device further includes time synchronism apparatus, one end of the time synchronism apparatus with
The output terminal in the binary data source is connected, the output terminal phase of the other end of the time synchronism apparatus and the detector
Connection.
Optionally, it is provided with display on the error counter.
From above technical scheme, the embodiment of the present application provides a kind of digital electrical energy measurement bit error rate detection device,
Its device includes signal generation apparatus, binary data source, gaussian random number generator, detector, comparator and error count
Device, wherein, the signal generation apparatus for producing signal is connected with the input terminal in the binary data source；The binary system
The output terminal of data source is connected with the comparator, the detector respectively, the binary data source and the detector
Between be provided with two connection circuits；Two Gauss numbers are equipped between the comparator and the detector to occur
Device, two gaussian random number generators are connected with two connection circuits respectively；The output terminal of the detector with
The comparator is connected；The comparator is connected with the error counter.Bit error rate inspection provided by the embodiments of the present application
Survey device and signal is sent by the signal generation apparatus, via output data behind the binary data source, and at the same time by this
Data sending is exported to the comparator from the data of binary data source output through the gaussian random number generator
The detector is inputted after additive noise component superposition, testing result is fed back to the comparator, the ratio by the detector
The data from the binary data source and the detector are compared compared with instrument, and comparative result is inputted into the mistake
Counter.A kind of digital electrical energy measurement bit error rate structure of the detecting device that the application provides is simple, low manufacture cost, convenient scene
Each class testing.
Brief description of the drawings
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other attached drawings can also be obtained according to these attached drawings.
Fig. 1 is a kind of structure diagram of digital electrical energy measurement bit error rate detection device of the application；
Fig. 2 is a kind of a kind of sinusoidal signal input emulation of embodiment of digital electrical energy measurement bit error rate detection device of the application
As a result；
Fig. 3 is that a kind of sinusoidal signal input of another embodiment of digital electrical energy measurement bit error rate detection device of the application is imitative
True result；
Fig. 4 is that a kind of sinusoidal signal input of the third embodiment of digital electrical energy measurement bit error rate detection device of the application is imitative
True result；
Wherein, 1- signal generation apparatus, 2- binary data source, 3- gaussian random number generators, 4- detectors, 5- compare
Instrument, 6- error counters, 7- time synchronism apparatus, 101- connection circuits.
Embodiment
Embodiment one
It is a kind of structure diagram of digital electrical energy measurement bit error rate detection device of the application referring to Fig. 1.
As shown in Figure 1, a kind of digital electrical energy measurement bit error rate detection device provided by the embodiments of the present application is sent out including signal
Generating apparatus 1, binary data source 2, gaussian random number generator 3, detector 4, comparator 5 and error counter 6, wherein,
The signal generation apparatus 1 for producing signal is connected with the input terminal in the binary data source 2；
The output terminal in the binary data source 2 is connected with the comparator 5, the detector 4 respectively, described two into
Two connection circuits 101 are provided between data source 2 processed and the detector 4；
Two gaussian random number generators 3, two height are equipped between the comparator 5 and the detector 4
This randomizer 3 is connected with two connection circuits 101 respectively；
The output terminal of the detector 4 is connected with the comparator 5；
The comparator 5 is connected with the error counter 6.
From above technical scheme, a kind of digital electrical energy measurement bit error rate detection device provided in this embodiment includes letter
Number generating means 1, binary data source 2, gaussian random number generator 3, detector 4, comparator 5 and error counter 6, below
Function and effect for each component illustrate one by one：
Signal generation apparatus：A kind of equipment that can provide various frequencies, waveform and output level electric signal.It is various measuring
When the amplitude response of telecommunication system or telecommunication apparatus, frequency characteristic, transmission characteristic and other electrical parameters, and measurement component
When characteristic is with parameter, signal source or driving source as test；According to the difference of output waveform, sine wave signal can be divided into
Device, rectangular pulse signal generator, function signal generator and random signal generator etc..Wherein, sinusoidal signal is using most
Extensive test signal, the signal generation apparatus 1 in the present embodiment are sinusoidal signal generator.
Binary data source：After the signal of input is received, binary data source can be by the signal of input according to certain
Rule conversion, output 0 or 1 value；In the present embodiment, binary data source judges the data area of input, when judgement produces
Data (0,0.5] in the range of, export " 0 " value；The data of generation export " 1 " value in the range of (0.5,1).
Gaussian random number generator：It is mainly used for the anti-interference test of communication electronic device, dominant disturbance type is noise
Interference, Gaussian noise signal temporal correlation is small, is most widely used at present.Gaussian random number generator described in the present embodiment
3 are mainly used for sending additive noise component, this additive noise component and the signal that the binary data source 2 is sent are superimposed,
The bit error rate after being superimposed with detection noise component.
Further, due to additive noise component Gaussian distributed so that the signal-to-noise ratio of the signal after superposition is different, when
When input signal is sinusoidal signal, obtained simulation architecture curve is near parabolic shape.
Detector：In the present embodiment, the detector 4 is by the signal exported from the binary data source 2 and institute
The signal for stating the additive noise superposition of the output of gaussian random number generator 3 is received and read, and is exported to the comparator 5.
Comparator：For receiving the signal of the binary data source 2 and the detector 4 output, and by two kinds of signals
It is compared, the corresponded manner of such as two kinds of signals is wrong, then is determined as error code, then sends feedback signal to the error count
Device 6.
Error counter：The bit error signal fed back for receiving the comparator 5, and count the number of bit error signal, root
The signal sum that signal is sent according to sender unit calculates the bit error rate.
The bit error rate is defined as that mistake code element number N occurseThe ratio between with transmitted symbol sum N, i.e.,：
The bit error rate is one of bit error probability estimation, when the symbol sum of statistics is very big, the ratio with it is theoretic
Bit error probability very close to.
The bit error probability of detection device provided in this embodiment is represented by：
In formula, S is average signal power；N is noise power；Q (x) is Gauss Q functions：
From above technical scheme, a kind of digital electrical energy measurement bit error rate detection device provided in this embodiment it is main
The course of work is：
First, a certain number of data-signals are sent by the signal generation apparatus 1, the data-signal is in (0,1) scope
It is interior；The data-signal of transmission is inputted by the input terminal in the binary data source 2, and the binary data source 2 judges that it is inputted
Hold the data that receive (0,0.5] in the range of when, the numerical value that the binary data source 2 exports is 0；The binary data source
2 when judging data that its input terminal receives in the range of (0.5,1), and the numerical value that the binary data source 2 exports is 1；From institute
The data for stating the output of binary data source 2 are respectively sent in the detector 4 and the comparator 5；
2nd, additive noise component n is produced respectively using two gaussian random number generators 30And n1, wherein, n0And n1
Average be 0, variance δ2=En0/ 2, during setting signal ENERGY E=1 while, changes δ2, then Signal to Noise Ratio (SNR)=(2 δ2)-1；And
This additive noise component is overlapped with two-phase by the data that the binary data source 2 exports respectively, is obtained described in input
The input ordered series of numbers s of detector 40And s1, here, if the data that binary data source 2 exports are 0, s0=E+n0, s1=n1；If
The data that binary data source 2 exports are 1, then s0=n0, s1=E+n1。
3rd, the detector 4 is receiving input ordered series of numbers s0And s1Afterwards, it will read and form coded sequence, and send to institute
State comparator 5.
4th, the number that the comparator 5 is exported according to the data and the detector 4 exported to the binary data source 2
According to being contrasted, when the data encoding that discovery does not correspond, feedback signal will be exported to the error counter 6, the difference
Wrong counter 6 counts mistake sum after feedback signal is received, and calculates the bit error rate.
From the above course of work, a kind of digital electrical energy measurement bit error rate detection device provided in this embodiment passes through two
The data-signal that binary data source 2 exports and the additive noise superposed signal through Gaussian Profile are detected and compare, and are missed with counting
Number of codes and the bit error rate is calculated, the apparatus structure is simple, and processing speed is rapid, and measuring accuracy is high.
It is that a kind of a kind of sinusoidal signal of embodiment of digital electrical energy measurement bit error rate detection device of the application is defeated referring to Fig. 2
Enter simulation result；
As shown in Figure 2, when the signal generation apparatus 1 exports sinusoidal signal, under different signal-to-noise ratio, the bit error rate
Near parabolic shape is presented with theoretical value in simulation result, and is almost overlapped in the case of low signal-to-noise ratio, illustrates measuring accuracy
It is high；In the case of high s/n ratio, simulation result relative theory value slightly deviation, but still meet the trend of theoretical curve.
Optionally, the signal generation apparatus 1 produces data as the sinusoidal signal in the range of (0,1).
Further, since the method for producing sinusoidal signal is fairly simple, and it is more convenient with sine measurement, so this Shen
Please embodiment using sinusoidal signal generator as signal generation apparatus；In addition, sinusoidal signal generator is widely used, cost phase
To cheap, apparatus cost also is reduced at the same time, reduces device complexity.
Optionally, described device further includes time synchronism apparatus 7, one end of the time synchronism apparatus 7 with described two into
The output terminal of data source 2 processed is connected, and the other end of the time synchronism apparatus 7 is connected with the output terminal of the detector 4.
Specifically, the time synchronism apparatus 7 includes PWM controller, its main working process is：When the binary number
According to source 2 to before the 5 output data information of comparator, its first by the data information conveyance to the detector 4 and it is described when
Between sychronisation 7, after the data message after detector 4 receives superposition, also the information of output is first delivered to described
Time synchronism apparatus 7, again to the binary data source after time synchronism apparatus 7 receives above-mentioned two-part information
2 and the detector 4 be simultaneously emitted by instructing, ensure the binary data source 2 and the detector 4 for same information
Output valve reaches the comparator 5 at the same time.The comparator 5 receives two groups of data from same information at the same time, can be at once
The correctness of information is judged, avoids dislocation caused by the non-concurrent property of information.
Optionally, it is provided with display on the error counter 6.
Further, the display immediately can show the error counts found, and make result more directly perceived.
From above technical scheme, a kind of digital electrical energy measurement bit error rate detection device bag provided by the embodiments of the present application
Signal generation apparatus 1, binary data source 2, gaussian random number generator 3, detector 4, comparator 5 and error counter 6 are included,
Wherein, the signal generation apparatus 1 for producing signal is connected with the input terminal in the binary data source 2；The binary system
The output terminal of data source 2 is connected with the comparator 5, the detector 4 respectively, the binary data source 2 and the inspection
Two connection circuits 101 are provided between survey device 4；Be equipped between the comparator 5 and the detector 4 two Gausses with
Machine number generator 3, two gaussian random number generators 3 are connected with two connection circuits 101 respectively；The detection
The output terminal of device 4 is connected with the comparator 5；The comparator 5 is connected with the error counter 6.Pass through the letter
Number generating means 1 exports sinusoidal signal, and under different signal-to-noise ratio, approximate throwing is presented with theoretical value for the simulation result of the bit error rate
Thing wire shaped, and have higher uniformity, equipment measuring accuracy is high；And the bit error rate structure of the detecting device is simple, is fabricated to
This is low, easy to use.
Embodiment two
Optionally, the sinusoidal signal is handled through decay.
The second embodiment and the digital electrical energy measurement bit error rate detection device difference provided described in first embodiment
Be, the signal generation apparatus 1 further includes attenuator, remaining structure of the numeral electrical energy measurement bit error rate detection device with
First embodiment is identical, and its also first embodiment is identical for the course of work, and details are not described herein again.
Attenuator is a kind of electronic component for providing decay, is widely used in electronic equipment, its main application
It is：The size of signal in adjustment circuit；In comparative method for measuring circuit, the pad value that direct-reading is tested network can be used to；Improve resistance
Anti- matching, if some circuit requirements have a more stable load impedance, can this circuit and actual loading impedance it
Between be inserted into an attenuator, the change of impedance can be buffered.
In the present embodiment, the sinusoidal signal produced using the attenuator to the signal generation apparatus 1 does decay processing,
Simulation result is obtained by simulation process.
It is a kind of sinusoidal signal of another embodiment of digital electrical energy measurement bit error rate detection device of the application referring to Fig. 3
Input simulation result.
From the figure 3, it may be seen that after the sinusoidal signal to input does decay processing, under different signal-to-noise ratio, the bit error rate is imitated
Near parabolic shape is presented with theoretical value in true result, and is almost overlapped in the case of low signal-to-noise ratio, illustrates measuring accuracy height；
In the case of high s/n ratio, simulation result relative theory value slightly deviation, but still meet the trend of theoretical curve.
From above technical scheme, a kind of digital electrical energy measurement bit error rate detection device bag provided by the embodiments of the present application
Signal generation apparatus 1, binary data source 2, gaussian random number generator 3, detector 4, comparator 5 and error counter 6 are included,
Wherein, the signal generation apparatus 1 for producing signal is connected with the input terminal in the binary data source 2；The binary system
The output terminal of data source 2 is connected with the comparator 5, the detector 4 respectively, the binary data source 2 and the inspection
Two connection circuits 101 are provided between survey device 4；Be equipped between the comparator 5 and the detector 4 two Gausses with
Machine number generator 3, two gaussian random number generators 3 are connected with two connection circuits 101 respectively；The detection
The output terminal of device 4 is connected with the comparator 5；The comparator 5 is connected with the error counter 6.Pass through the letter
Number generating means 1 exports the sinusoidal signal through decay processing, under different signal-to-noise ratio, the simulation result and theoretical value of the bit error rate
Near parabolic shape is presented, and has higher uniformity, equipment measuring accuracy is high；And the bit error rate structure of the detecting device
Simply, low manufacture cost, be easy to use.
Embodiment three
Optionally, the sinusoidal signal superposition white Gaussian noise.
The 3rd embodiment and the digital electrical energy measurement bit error rate detection device difference provided described in first embodiment
It is, the signal generation apparatus 1 further includes Gaussian white noise generator, the numeral electrical energy measurement bit error rate detection device
Remaining structure is identical with first embodiment, and its also first embodiment is identical for the course of work, and details are not described herein again.
Gaussian white noise generator is that one kind makees noise source using stabistor, can be produced in the range of certain frequency white
The equipment of noise, the white noise refer to that all frequencies have the random noise of identical energy density.
In the present embodiment, the sinusoidal signal that is produced using the Gaussian white noise generator to the signal generation apparatus 1
It is overlapped, simulation result is obtained by simulation process.
It is a kind of sinusoidal signal of the third embodiment of digital electrical energy measurement bit error rate detection device of the application referring to Fig. 4
Input simulation result.
As shown in Figure 4, after white Gaussian noise is superimposed in the sinusoidal signal to input, under different signal-to-noise ratio, error code
Near parabolic shape is presented with theoretical value in the simulation result of rate, and is almost overlapped in the case of low signal-to-noise ratio, illustrates test
Precision is high；In the case of high s/n ratio, simulation result relative theory value slightly deviation, but still meet the trend of theoretical curve.
From above technical scheme, a kind of digital electrical energy measurement bit error rate detection device bag provided by the embodiments of the present application
Signal generation apparatus 1, binary data source 2, gaussian random number generator 3, detector 4, comparator 5 and error counter 6 are included,
Wherein, the signal generation apparatus 1 for producing signal is connected with the input terminal in the binary data source 2；The binary system
The output terminal of data source 2 is connected with the comparator 5, the detector 4 respectively, the binary data source 2 and the inspection
Two connection circuits 101 are provided between survey device 4；Be equipped between the comparator 5 and the detector 4 two Gausses with
Machine number generator 3, two gaussian random number generators 3 are connected with two connection circuits 101 respectively；The detection
The output terminal of device 4 is connected with the comparator 5；The comparator 5 is connected with the error counter 6.Pass through the letter
Number generating means 1 exports the sinusoidal signal of superimposed white Gaussian noise, under different signal-to-noise ratio, the simulation result of the bit error rate with
Near parabolic shape is presented in theoretical value, and has higher uniformity, and equipment measuring accuracy is high；And the bit error rate detection dress
Put simple in structure, low manufacture cost, be easy to use.
Those skilled in the art will readily occur to this practicality after considering specification and putting into practice utility model disclosed herein
New other embodiments.This application is intended to cover any variations, uses, or adaptations of the utility model, these
Variations, uses, or adaptations follow the general principle of the utility model and including undocumented skills of the utility model
Common knowledge or conventional techniques in art field.Description and embodiments be considered only as it is exemplary, the utility model
True scope and spirit are pointed out by claims hereof.
It should be appreciated that the accurate knot that the utility model is not limited to be described above and is shown in the drawings
Structure, and various modifications and changes may be made without departing from the scope thereof.The scope of the utility model only will by appended right
Ask to limit.
Claims (6)
- A kind of 1. numeral electrical energy measurement bit error rate detection device, it is characterised in that described device includes signal generation apparatus (1), Binary data source (2), gaussian random number generator (3), detector (4), comparator (5) and error counter (6), wherein,The signal generation apparatus (1) for producing signal is connected with the input terminal of the binary data source (2)；The output terminal of the binary data source (2) is connected with the comparator (5), the detector (4) respectively, and described two Two are provided between binary data source (2) and the detector (4) and is connected circuit (101)；Two gaussian random number generators (3) are equipped between the comparator (5) and the detector (4), described in two Gaussian random number generator (3) is connected with two connection circuits (101) respectively；The output terminal of the detector (4) is connected with the comparator (5)；The comparator (5) is connected with the error counter (6).
- A kind of 2. digital electrical energy measurement bit error rate detection device according to claim 1, it is characterised in that the signal hair Generating apparatus (1) produces data as the sinusoidal signal in the range of (0,1).
- A kind of 3. digital electrical energy measurement bit error rate detection device according to claim 2, it is characterised in that the sinusoidal letter Number handled through decay.
- A kind of 4. digital electrical energy measurement bit error rate detection device according to claim 2, it is characterised in that the sinusoidal letter Number superposition white Gaussian noise.
- 5. a kind of digital electrical energy measurement bit error rate detection device according to claim 2 to 4 any one, its feature exist In described device further includes time synchronism apparatus (7), one end and the binary data source of the time synchronism apparatus (7) (2) output terminal is connected, and the other end of the time synchronism apparatus (7) is connected with the output terminal of the detector (4).
- A kind of 6. digital electrical energy measurement bit error rate detection device according to claim 5, it is characterised in that the mistake meter Display is provided with number device (6).
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