CN205562658U - Pulse spike amplitude measuring device and measuring circuit thereof - Google Patents
Pulse spike amplitude measuring device and measuring circuit thereof Download PDFInfo
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- CN205562658U CN205562658U CN201620133027.2U CN201620133027U CN205562658U CN 205562658 U CN205562658 U CN 205562658U CN 201620133027 U CN201620133027 U CN 201620133027U CN 205562658 U CN205562658 U CN 205562658U
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Abstract
The utility model belongs to the technical field of the pulse spike amplitude is measured, a pulse spike amplitude measuring device and measuring circuit thereof is disclosed. The utility model discloses in, through adopting the pulse spike amplitude measuring circuit including comparing module, energy storage module and amplitude measured module for when pulse signal is the low level, compare the module output low level, the energy storage module does not have voltage output to amplitude measured module, when pulse signal was the peak high level, relatively the module output high level charged energy storage module output voltage to amplitude measured module for the energy storage module, when pulse signal resumeed the low level, the energy storage module was charged and is finished, and amplitude measured module measures and export corresponding magnitude of voltage to the voltage of energy storage module output, and the magnitude of voltage be pulse signal's peak amplitude promptly, and its measurement accuracy is high, and can carry out the measurement of batch nature, so solved current pulse spike amplitude measuring circuit have that the precision is low just can not batch nature measuring problem.
Description
Technical field
This utility model belongs to pulse spike amplitude measurement technical field, particularly relates to a kind of pulse spike amplitude
Measurement apparatus and measuring circuit thereof.
Background technology
In existing electronic system, pulse spike is common noise waveform, in order to keep electronic system
Precise operation, needs to measure the amplitude of pulse spike.
At present, prior art mainly uses two schemes to measure the amplitude of pulse spike, and one is profit
Capture with oscillograph, although this kind of method can detect the amplitude of pulse spike, but it is for batch
Property measurement creates certain limitation；Another kind is to utilize diode to measure with electric capacity, such as Fig. 1 institute
Showing, when the high level of pulse spike arrives, diode D1 turns on, and then makes the high electricity of pulse spike
Putting down and be charged electric capacity C1, the waveform voltage value of detection electric capacity C1 output is the amplitude of pulse spike,
Reverse leakage, pressure drop and the discharge process of electric capacity C1 yet with diode D1 so that from electric capacity
The waveform of C1 output has the trend being gradually lowered, and then reduces the accuracy of measurement.
In sum, to there is precision low and can not bulk measurement for existing pulse spike amplitude measurement circuit
Problem.
Utility model content
The purpose of this utility model is to provide a kind of pulse spike measuring circuit, it is intended to solve existing pulse
It is low and can not the problem of bulk measurement to there is precision in peak amplitude measuring circuit.
This utility model is achieved in that a kind of pulse spike amplitude measurement circuit, it include comparison module,
Energy-storage module and amplitude measurement module；
The first input end return pulse signal of described comparison module, the second input termination of described comparison module
Receiving reference voltage, the outfan of described comparison module is connected with the input of described energy-storage module, described energy storage
The outfan of module is connected with the input of described amplitude measurement module；
When described pulse signal is low level, described low level voltage is less than described reference voltage, described
Comparison module output low level, described energy-storage module Non voltage output to described amplitude measurement module；
When described pulse signal is spike high level, the voltage of described spike high level is higher than described reference electricity
Pressure, described comparison module output high level is the charging of described energy-storage module, and described energy-storage module output voltage is extremely
Described amplitude measurement module；
When described pulse signal recovers low level, the charging of described energy-storage module is complete, described amplitude measurement mould
Block measures to the voltage that described energy-storage module exports and exports corresponding magnitude of voltage, and described magnitude of voltage is
The peak amplitude of described pulse signal.
Another object of the present utility model also resides in a kind of pulse spike measurement apparatus of offer, described pulse spike
Measurement apparatus includes above-mentioned pulse spike measuring circuit.
In this utility model, include comparison module, energy-storage module and amplitude measurement module by employing
Pulse spike amplitude measurement circuit so that when pulse signal is low level, low level voltage is less than reference
Voltage, comparison module output low level, energy-storage module Non voltage output is to amplitude measurement module；When pulse is believed
When number being spike high level, the voltage of this spike high level is higher than reference voltage, comparison module output high level
Charging for energy-storage module, energy-storage module output voltage is to amplitude measurement module；When pulse signal recovers low level
Time, energy-storage module charging is complete, and the voltage that energy-storage module exports is measured and exports by amplitude measurement module
Corresponding magnitude of voltage, magnitude of voltage is the peak amplitude of pulse signal；Owing to comparison module pressure drop is less, very
To being negligible, therefore spike is through comparison module, will not produce relatively lossy so that
Pulse spike is maintained so that the peak amplitude error that amplitude measurement module is measured is less, precision is high,
And this pulse spike amplitude measurement circuit can carry out bulk measurement, and then solves existing pulse spike
It is low and can not the problem of bulk measurement to there is precision in amplitude measurement circuit.
Accompanying drawing explanation
Fig. 1 is existing pulse spike amplitude measurement circuit；
Fig. 2 is that the modular structure of the pulse spike amplitude measurement circuit that this utility model one embodiment is provided is shown
It is intended to；
Fig. 3 is the electrical block diagram of the pulse spike amplitude measurement circuit shown in Fig. 2；
Fig. 4 is the modular structure of the pulse spike amplitude measurement circuit that another embodiment of this utility model is provided
Schematic diagram；
Fig. 5 is the electrical block diagram of the pulse spike amplitude measurement circuit shown in Fig. 4.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing
And embodiment, this utility model is further elaborated.Should be appreciated that described herein specifically
Embodiment, only in order to explain this utility model, is not used to limit this utility model.
Below in conjunction with concrete accompanying drawing, realization of the present utility model is described in detail:
Fig. 2 shows the module knot of the pulse spike amplitude measurement circuit that this utility model one embodiment provided
Structure, for convenience of description, only illustrates part related to the present embodiment, and details are as follows:
In the present embodiment, pulse spike amplitude measurement circuit 100 includes comparison module 10, energy-storage module 20
And amplitude measurement module 30.Wherein, the first input end return pulse signal of comparison module 10, compares
Second input of module 10 receives reference voltage Vref, the outfan of comparison module 10 and energy-storage module 20
Input connect, the outfan of energy-storage module 20 is connected with the input of amplitude measurement module 30.
Concrete, when pulse signal is low level, this low level voltage is less than reference voltage Vref, than
Relatively module 10 output low level, energy-storage module 20 Non voltage output is to amplitude measurement module 30；When pulse is believed
When number being spike high level, the voltage of this spike high level is higher than reference voltage Vref, and comparison module 10 is defeated
Going out high level is that energy-storage module 20 charges, and energy-storage module 20 output voltage is to amplitude measurement module 30；Work as arteries and veins
When rushing signal recovery low level, energy-storage module 20 charges complete, and amplitude measurement module 30 is to energy-storage module 20
The voltage of output measures, and exports corresponding magnitude of voltage, and this magnitude of voltage is the spike width of pulse signal
Value.
It should be noted that in the present embodiment, when pulse signal is multipulse signal, amplitude measurement mould
Block 30 can measure multiple peak amplitude, and testing staff can take carrying out later stage tune maximum in multiple peak amplitude
The operations such as examination, it is also possible to multiple peak amplitude are averagely obtained meansigma methods to carry out the operations such as later stage debugging.
Further, as it is shown on figure 3, as this utility model one preferred embodiment, energy-storage module 20 includes
Storage electric capacity C2 and voltage follower OP1, first end of storage electric capacity C2 and the positive of voltage follower
Input 3 connects the input forming energy-storage module 20 altogether, and the outfan 6 of voltage follower OP1 is energy storage
The outfan of module 20, the inverting input 2 of voltage follower OP1 and the output of voltage follower OP1
End 6 connection, has between positive power source terminal 7 and the negative power end 4 of voltage follower OP1 and is available for voltage follow
The pressure reduction of device OP1 work.
As this utility model one preferred embodiment, comparison module 10 includes the first comparator OP2, the first ratio
The first input end that normal phase input end 3 is comparison module 10 of relatively device OP2, the first comparator OP2's is anti-
Phase input 2 is the second input of comparison module 10, and the outfan 6 of the first comparator OP2 is for comparing
The outfan of module 10, has between positive power source terminal 7 and the negative power end 4 of the first comparator OP2 and is available for
The pressure reduction of the first comparator OP2 work.
As this utility model one preferred embodiment, amplitude measurement module 30 can use circuit tester or modulus to turn
Parallel operation realizes.
The arteries and veins of the present embodiment is described below in detail as a example by the pulse spike amplitude measurement circuit 100 shown in Fig. 3
Rush the operation principle of peak amplitude measuring circuit:
When the low level that pulse signal is low level, i.e. pulse signal is come interim, and the first comparator OP2 is just
Phase input 3 return pulse signal, negative-phase input 2 receives reference voltage Vref, due to pulse signal
Low level is less than reference voltage Vref, and therefore, outfan 6 output low level of the first comparator OP2 is to electricity
The normal phase input end 3 of pressure follower OP1, voltage follower OP1 does not works, and its Non voltage output is to amplitude
Measurement module 30.
When the spike high level of pulse signal arrives, when i.e. pulse signal is spike high level, due to this spike
The voltage of high level is higher than reference voltage Vref, and therefore, the outfan 6 of the first comparator OP2 exports high electricity
Putting down and charge for storage electric capacity C2, outfan 6 output voltage of voltage follower OP1 is to amplitude measurement module
30。
When pulse signal recovers low level, the first comparator OP2 output low level, storage electric capacity C2 fills
Electricity is complete, and the voltage now storing electric capacity C2 storage is exported to institute's amplitude measurement mould by voltage follower OP1
Block 30, the voltage that voltage follower OP1 is exported by amplitude measurement module 30 measures and exports accordingly
Magnitude of voltage, this magnitude of voltage is the peak amplitude of pulse signal.
It should be noted that in the present embodiment, owing to the pressure drop of the first comparator OP2 is smaller, even
Being negligible, therefore, the spike high level of pulse signal will not produce through the first comparator OP2
Raw relatively lossy；Additionally, due to the voltage of storage is carried out by storage electric capacity C2 by voltage follower OP1
Output is to amplitude measurement module 30, and voltage follower OP1 will store electric capacity C2 and amplitude measurement module 30
Isolated, prevent storing electric capacity C2 and amplitude measurement module 30 is discharged, and then reduce pulse
The attenuation degree of peak amplitude, it is ensured that it is accurate that inspection amplitude measurement module 30 is measured.
In the present embodiment, comparison module 10, energy-storage module 20 and amplitude measurement mould are included by employing
The pulse spike amplitude measurement circuit of block 30 so that when pulse signal is low level, low level voltage is low
In reference voltage, comparison module 10 output low level, energy-storage module 20 Non voltage output is to amplitude measurement mould
Block 30；When pulse signal is spike high level, the voltage of this spike high level is higher than reference voltage, compares
It is that energy-storage module 20 charges that module exports 10 high level, and energy-storage module 20 output voltage is to amplitude measurement module
30；When pulse signal recovers low level, energy-storage module 20 charges complete, and amplitude measurement module 30 is to storage
The voltage of energy module 20 output measures and exports corresponding magnitude of voltage, and magnitude of voltage is the point of pulse signal
Peak amplitude；Owing to comparison module 10 pressure drop is less, it might even be possible to ignoring, therefore spike is at warp
When crossing comparison module, relatively lossy will not be produced so that pulse spike is maintained so that amplitude is surveyed
The peak amplitude error that amount module is measured is less, precision is high, and this pulse spike amplitude measurement circuit can enter
The bulk measurement of row, and then solving existing pulse spike amplitude measurement circuit, to there is precision low and can not criticize
The problem that amount property is measured.
Fig. 4 shows the pulse spike amplitude measurement circuit 200 that another embodiment of this utility model provided
Modular structure, for convenience of description, only illustrates part related to the present embodiment, and details are as follows:
As shown in Figure 4, the pulse spike amplitude measurement circuit 200 shown in the present embodiment is shown in Fig. 1
Add self-locking module 40, control module 50 on the basis of pulse spike amplitude measurement circuit 100 and open
Close module 60.
Wherein, the first input end of self-locking module 40 receives and drives signal, the second input of self-locking module 40
End receives the first supply voltage, the first outfan of self-locking module 40 and the first input end of self-locking module 40
Connect, the second outfan of self-locking module 40 and the first outfan of control module 50 and switch module 60
Control end connect, the 3rd outfan of self-locking module 40 is connected with the second outfan of control module 50,
The input of switch module 60 is connected with the outfan of comparison module 10, the outfan of switch module 60 and storage
The input of energy module 20 connects, the first input end return pulse signal of control module 50, control module
Second input of 50 receives reference voltage Vref, and the 3rd input of control module 50 receives second source
Voltage, the first outfan of control module 50 is connected with the control end of switch module 60.
Concrete, driving signal is high level signal, and self-locking module 40 enters self-locking state according to driving signal,
And exporting the first supply voltage to the control end of switch module 60, switch module 60 is according to the first supply voltage
Enter conducting state.
When pulse signal is low level, this low level voltage is less than reference voltage Vref, comparison module 10
Output low level, energy-storage module Non voltage output is to amplitude measurement module 30；When pulse signal is spike height electricity
At ordinary times, the voltage of this spike high level is higher than reference voltage Vref, and control module 50 controls self-locking module 40
Disconnecting, and control switch module 60 and keep conducting state, comparison module 10 exports high level by opening
Closing module 60 to charge for energy-storage module 20, energy-storage module 20 output voltage is to amplitude measurement module 30.
When pulse signal recovers low level, self-locking module 40 maintains off-state, control module 50 to control
Switch module 60 disconnects, and energy-storage module 20 charges complete, and amplitude measurement module 30 is defeated to energy-storage module 20
The voltage gone out measures and exports corresponding magnitude of voltage, and this magnitude of voltage is the peak amplitude of pulse signal.
It should be noted that in the present embodiment, pulse spike amplitude measurement circuit 200 is to believe pulse
Number peak amplitude measure, this pulse spike amplitude measurement circuit 200 also can be to multipulse signal certainly
Peak amplitude measure, when the peak amplitude of multipulse signal is measured, it is only necessary to will drive
The driving signal of self-locking module 40 uses periodic drive signal to replace so that this periodic drive signal and arteries and veins
Rush signal to coordinate.
As this utility model one preferred embodiment, the big I phase of the first supply voltage and second source voltage
With, it is possible to different.
In the present embodiment, self-locking module 40, control are set in pulse amplitude measuring circuit 200 by employing
Molding block 50 and switch module 60 so that self-locking module 40 is in self-locking state according to driving signal, and
Controlling switch module 60 to turn on, when pulse signal is spike high level, control module 50 controls self-locking mode
Block 40 disconnects, and controls switch module 60 constant conduction, and then it is logical to make comparison module 10 export high level
Cross switch module 60 to charge to energy-storage module 20；When pulse signal recovers low level, self-locking module 40
Maintaining off-state, control module 50 controls switch module 60 and disconnects, and energy-storage module 20 charges complete, width
The voltage that energy-storage module 20 is exported by value measurement module 30 measures, owing to recovering low electricity when pulse signal
At ordinary times, self-locking module 40 and switch module 60 are in off-state, and therefore, energy-storage module 20 cannot be to
Front end comparison module 10 discharges, and reduces the attenuation degree of pulse signal, and then makes rear end amplitude measurement mould
The voltage that block 30 is measured more levels off to the peak amplitude of pulse signal, improves the measurement essence of pulse spike amplitude
Degree.
Further, as shown in Figure 4, control module 50 includes control unit 500 and switch element 501.
Wherein, the first input end of control unit 500 is the first input end of control module 50, control unit 500
The second input that the second input is control module 50, the outfan of control unit 500 and switch element
The control end of 501 connects, and the input of switch element 501 is the 3rd input of control module 50, switch
First outfan that first outfan is control module 50 of unit 501, the second output of switch element 501
End is the second outfan of control module 50.
Concrete, when pulse signal is high level, control unit 500 exports high level signal to switching list
Unit 501, switch element 501 turns on according to high level signal, and switch element 501 controls self-locking module 40 and breaks
Open, and control switch module 60 and keep conducting state；When pulse signal recovers low level, control single
Unit's 500 output low level signals control to open to switch element 501, switch element 501 according to low level signal
Close module 60 to disconnect.
Further, as it is shown in figure 5, as this utility model one preferred embodiment, control unit 500 is wrapped
Including the second comparator OP3, switch element 501 includes switch element Q, the first resistance R1, the second resistance
R2 and the 3rd resistance R3.
Wherein, the first input end that normal phase input end 3 is control unit 500 of the second comparator OP3, the
Second input that inverting input 2 is control unit 500 of two comparator OP3, the second comparator OP3
The outfan that outfan is control unit 500, the positive power source terminal 7 of the second comparator OP3 and negative power end
Having the pressure reduction being available for the second comparator OP3 work between 4, the control end of switch element Q is switch element
The control end of 501, the input of switch element Q and first end of the first resistance R1 connect, the first resistance
The input that second end is switch element 501 of R1, the outfan of switch element Q and the second resistance R2's
First end of the first end and the 3rd resistance R3 altogether connect formed switch element 501 the second outfan, second
The second end ground connection of resistance R2, first outfan that the second end is switch element 501 of the 3rd resistance R3.
It should be noted that in the present embodiment, switch element Q is NMOS tube, the grid of this NOS pipe
Pole, drain electrode and source electrode are respectively control end, input and the outfan of switch element Q.
As this utility model one preferred embodiment, as it is shown in figure 5, self-locking module 40 includes high-voltage relay
J1, the 4th resistance R4 and the 5th resistance R5.Wherein, the control end of high-voltage relay J1 is self-locking module
The first input end of 40, the input of high-voltage relay J1 is the second input of self-locking module 40, high pressure
First outfan that first outfan is self-locking module 40 of relay J 1, the second of high-voltage relay J1 is defeated
Going out end to be connected with first end of the 4th resistance R4, second end of the 4th resistance R4 is the of self-locking module 40
Two outfans, the 3rd outfan of high-voltage relay J1 and first end of the 5th resistance R5 connect formation self-locking altogether
3rd outfan of module 40, the second end ground connection of the 5th resistance R5.
It should be noted that in the present embodiment, the setting of the 4th resistance R4 can be to the of self-locking module 40
The high voltage of two outfan outputs carries out dividing potential drop, and then effectively prevents self-locking module 40 from inputting to switch module
The damage of switch module 60 is caused when the voltage of 60 is excessive.
As this utility model one preferred embodiment, as it is shown in figure 5, switch module 60 includes low-voltage relay
J2, low-voltage relay J2 control the control end that end is switch module 60, the input of low-voltage relay J2
For the input of switch module 60, the outfan that the first outfan is switch module 60 of low-voltage relay J2,
The second outfan sky of low-voltage relay J2 connects, the 3rd output head grounding of low-voltage relay J2.
The arteries and veins of the present embodiment is described below in detail as a example by the pulse spike amplitude measurement circuit 200 shown in Fig. 5
Rush the operation principle of peak amplitude measuring circuit:
The initial waveform assuming pulse signal is low level, is continuously again low level after burst high level.Work as height
The control end input drive signal of potential relay J1, and when this driving signal is high level signal, high-voltage relay
The switch K1 conducting of device J1, therefore, first outfan of high-voltage relay J1 is inputted that end receives
One supply voltage exports the control end to high-voltage relay J1, and high-voltage relay J1 is according to this first power supply electricity
It is pressed into into self-locking state, after high-voltage relay J1 enters self-locking state, the control end of high-voltage relay J1
Driving signal disconnect；It should be noted that now, the voltage of A point is low level.
Additionally, due to the switch K1 conducting of high-voltage relay J1, first outfan of high-voltage relay J1 is defeated
Going out high level to the control end of low-voltage relay J2, the most now the voltage of B point is high level, low-voltage relay
J2 controls the K2 conducting of its switch according to high level, now, owing to the low level of pulse signal is less than with reference to electricity
Pressure Vref, the voltage of the normal phase input end 3 of the i.e. first comparator OP2 is less than the voltage of its negative-phase input 2,
Therefore, the first comparator OP2 output low level to voltage follower OP1, voltage follower OP1 is closed,
Therefore Non voltage output is to amplitude measurement module 30；Simultaneously as the normal phase input end of the second comparator OP3
The low level of 3 input pulse signals, the negative-phase input 2 input reference voltage Vref of the second comparator OP3,
Therefore, the second comparator OP3 output low level signal to switch element Q, switch element Q according to this low electricity
Ordinary mail number is closed；It should be noted that A point maintains low level state, same B point maintains height
Level state.
When the spike high level of pulse signal arrives, when i.e. pulse signal is spike high level, due to the first ratio
The spike high level voltage of the normal phase input end 3 of relatively device OP2 is more than the reference electricity of its negative-phase input 2 input
Pressure Vref, therefore, the outfan 6 of the first comparator OP2 exports high level by low-voltage relay J2；With
Sample inputs spike high level, inverting input 2 input ginseng due to the normal phase input end 3 of the second comparator OP3
Examine voltage Vref, and the voltage reference voltage Vref of spike high level, therefore, the second comparator OP3 output
High level signal turns on to switch element Q, switch element Q according to this high level signal, with by second source
Voltage exports to its outfan after the first resistance R1 dividing potential drop, and now, the outfan of switch element Q is i.e.
The voltage of A point is high level, and the control end of high-voltage relay J1 is similarly high level, and now, high pressure continues
Electrical equipment J1 disconnects.
Additionally, when switch element Q turns on, due to the dividing potential drop effect of the 3rd resistance R3, the voltage of B point
Maintaining high level, therefore, low-voltage relay J2 maintains the conducting of its switch K1 according to this high level, enters
And the high level of the first comparator OP2 output is charged for storage electric capacity C2 by low-voltage relay J2,
The outfan 6 output voltage values amplitude measurement module 30 of voltage follower OP1.
When pulse signal recovers low level, the first comparator OP2 output low level signal again, storage electricity
Holding C2 charging complete, the voltage herein storing electric capacity C2 storage is exported to amplitude by voltage follower OP1
Measurement module 30, the voltage that voltage follower OP1 is exported by amplitude measurement module 30 measures and exports
Corresponding magnitude of voltage, this magnitude of voltage is the peak amplitude of pulse signal；Additionally, the second comparator OP3 is defeated
Go out low level signal to end to switch element Q, switch element Q according to this low level signal, switch element Q
Outfan Non voltage output, and then make the voltage of A point and B point be become low level from high level, additionally,
Owing to high-voltage relay J1 is off, therefore, low-voltage relay J2 disconnects, and then makes first
The low level signal output that comparator OP2 can not output it, to storage electric capacity C2, prevents from storing electric capacity C2
To the first comparator OP2 electric discharge, reduce the attenuation degree of pulse spike amplitude, and then ensure that inspection amplitude
It is accurate that measurement module 30 is measured.
Further, this utility model also provides for a kind of pulse spike amplitude measurement device, and it includes above-mentioned
Pulse spike amplitude measurement circuit 100 or pulse spike amplitude measurement circuit 200.
In the present embodiment, high-voltage relay J1, low-voltage relay J2, the second comparator are included by employing
OP3 and switch element Q so that high-voltage relay J1 is according to driving signal to be in self-locking state, and controls
Low-voltage relay J2 turns on；When pulse signal is spike high level, the second comparator OP3 controls switch
Element Q turns on, and then controls high-voltage relay J1 disconnection, and controls low-voltage relay J2 constant conduction,
And then the first comparator OP1 output high level is charged to storage electric capacity C2 by low-voltage relay J2；
When pulse signal recovers low level, high-voltage relay J1 maintains off-state, and the second comparator OP3 is defeated
Going out low level signal to disconnect to switch element Q, switch element Q, storage electric capacity C2 charging is complete, amplitude
The voltage that voltage follower OP1 is exported by measurement module 30 measures, owing to recovering low when pulse signal
During level, high-voltage relay J1 and low-voltage relay J2 are in off-state, therefore, storage electric capacity C2 without
Method forward end the first comparator OP2 discharges, and reduces the attenuation degree of pulse signal, and then makes rear end width
The voltage that value measurement module 30 is measured more levels off to the peak amplitude of pulse signal, improves pulse spike amplitude
Certainty of measurement；Additionally, due to the first comparator OP2 pressure drop is less, it might even be possible to ignore, because of
This spike, through the first comparator OP2, will not produce relatively lossy so that pulse spike
It is maintained so that the peak amplitude error of amplitude measurement module measurement 30 is less, precision is high, and this arteries and veins
Rush peak amplitude measuring circuit 200 and can carry out bulk measurement, therefore, the pulse spike that the present embodiment provides
Amplitude measurement circuit 200 solve existing pulse spike amplitude measurement circuit exist precision low and can not batch
Property measure problem.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model,
All any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, all should
Within being included in protection domain of the present utility model.
Claims (10)
1. a pulse spike amplitude measurement circuit, it is characterised in that described pulse spike amplitude measurement circuit
Including comparison module, energy-storage module and amplitude measurement module；
The first input end return pulse signal of described comparison module, the second input termination of described comparison module
Receiving reference voltage, the outfan of described comparison module is connected with the input of described energy-storage module, described energy storage
The outfan of module is connected with the input of described amplitude measurement module；
When described pulse signal is low level, described low level voltage is less than described reference voltage, described
Comparison module output low level, described energy-storage module Non voltage output to described amplitude measurement module；
When described pulse signal is spike high level, the voltage of described spike high level is higher than described reference electricity
Pressure, described comparison module output high level is the charging of described energy-storage module, and described energy-storage module output voltage is extremely
Described amplitude measurement module；
When described pulse signal recovers low level, the charging of described energy-storage module is complete, described amplitude measurement mould
Block measures to the voltage that described energy-storage module exports and exports corresponding magnitude of voltage, and described magnitude of voltage is
The peak amplitude of described pulse signal.
Pulse spike amplitude measurement circuit the most according to claim 1, it is characterised in that described energy storage
Module includes storing electric capacity and voltage follower, the first end of described storage electric capacity and described voltage follower
Normal phase input end connect and formed the input of described energy-storage module altogether, the outfan of described voltage follower is
The outfan of described energy-storage module, the inverting input of described voltage follower is defeated with described voltage follower
Go out end to connect, have between positive power source terminal and the negative power end of described voltage follower and be available for described voltage follow
The pressure reduction of device work.
Pulse spike amplitude measurement circuit the most according to claim 2, it is characterised in that described comparison
Module includes the first comparator, and normal phase input end is described comparison module the first of described first comparator is defeated
Enter to hold, second input that inverting input is described comparison module of described first comparator, described first
The outfan of comparator is the outfan of described comparison module, the positive power source terminal of described first comparator and negative electricity
There is between source the pressure reduction being available for described first comparator work.
4. according to the pulse spike amplitude measurement circuit described in any one of claims 1 to 3, it is characterised in that
Described pulse spike amplitude measurement circuit also includes:
Self-locking module, control module and switch module；
The first input end of described self-locking module receives and drives signal, the second input termination of described self-locking module
Receiving the first supply voltage, the first outfan of described self-locking module connects with the first input end of described self-locking module
Connect, the second outfan of described self-locking module and the first outfan of described control module and described switching molding
The control end of block connects, and the 3rd outfan of described self-locking module connects with the second outfan of described control module
Connecing, the input of described switch module is connected with the outfan of described comparison module, described switch module defeated
Going out end to be connected with the input of described energy-storage module, the first input end of described control module receives described pulse
Signal, the second input of described control module receives described reference voltage, and the 3rd of described control module is defeated
Enter end and receive second source voltage, the first outfan of described control module and the control end of described switch module
Connect；
Described self-locking mode tuber enters self-locking state according to described driving signal, and exports described first supply voltage
To the control end of described switch module, described switch module enters conducting state according to described first supply voltage；
When described pulse signal is low level, described low level voltage is less than described reference voltage, described
Comparison module output low level, described energy-storage module Non voltage output to described amplitude measurement module；
When described pulse signal is spike high level, the voltage of described spike high level is higher than described reference electricity
Pressure, described control module controls described self-locking module and disconnects, and controls described switch module and keep conducting
State, described comparison module output high level is that described energy-storage module charges by described switch module, described
Energy-storage module output voltage is to described amplitude measurement module；
When described pulse signal recovers low level, described self-locking module maintains off-state, described control mould
Block controls described switch module and disconnects, and the charging of described energy-storage module is complete, and described amplitude measurement module is to described
The voltage of energy-storage module storage output measures and exports corresponding magnitude of voltage, and described magnitude of voltage is described
The peak amplitude of pulse signal.
Pulse spike amplitude measurement circuit the most according to claim 4, it is characterised in that described control
Module includes control unit and switch element；
The first input end of described control unit is the first input end of described control module, described control unit
The second input that the second input is described control module, the outfan of described control unit leaves with described
The control end closing unit connects, and the input of described switch element is the 3rd input of described control module,
First outfan that first outfan is described control module of described switch element, the of described switch element
Two outfans are the second outfan of described control module；
When described pulse signal is high level, described control unit output high level signal is single to described switch
Unit, described switch element turns on according to described high level signal, and described switch element controls described self-locking module
Disconnect, and control described switch module and keep conducting state；When described pulse signal recovers low level,
Described control unit output low level signal is to described switch element, and described switch element is according to described low level
Signal controls described switch module and disconnects.
Pulse spike amplitude measurement circuit the most according to claim 5, it is characterised in that described control
Unit include the second comparator, described switch element include switch element, the first resistance, the second resistance and
3rd resistance；
The first input end that normal phase input end is described control unit of described second comparator, described second ratio
The inverting input of relatively device is the second input of described control unit, and the outfan of described second comparator is
The outfan of described control unit, has between positive power source terminal and the negative power end of described second comparator and is available for
The pressure reduction of described second comparator work, the control end that control end is described switch element of described switch element,
The input of described switch element is connected with the first end of described first resistance, the second end of described first resistance
For the input of described switch element, the first end of the outfan of described switch element and described second resistance with
And the first end of described 3rd resistance connects the second outfan forming described switch element, described second resistance altogether
The second end ground connection, first outfan that the second end is described switch element of described 3rd resistance.
Pulse spike amplitude measurement circuit the most according to claim 4, it is characterised in that described self-locking mode
Block includes high-voltage relay, the 4th resistance and the 5th resistance；
The first input end that control end is described self-locking module of described high-voltage relay, described high-voltage relay
The second input that input is described self-locking module, the first outfan of described high-voltage relay is described
First outfan of self-locking module, the second outfan of described high-voltage relay and the first of described 4th resistance
End connects, second outfan that the second end is described self-locking module of described 4th resistance, described high-voltage relay
3rd outfan of device and the first end of described 5th resistance connect the 3rd output forming described self-locking module altogether
End, the second end ground connection of described 5th resistance.
Pulse spike amplitude measurement circuit the most according to claim 4, it is characterised in that described switch
Module includes low-voltage relay, the control end that control end is described switch module of described low-voltage relay, institute
State the input that input is described switch module of low-voltage relay, the first output of described low-voltage relay
End is the outfan of described switch module, and the second outfan sky of described low-voltage relay connects, and described low pressure continues
3rd output head grounding of electrical equipment.
Pulse spike amplitude measurement circuit the most according to claim 1, it is characterised in that described amplitude
Measurement module is circuit tester or analog-digital converter.
10. a pulse spike amplitude measurement device, it is characterised in that described pulse spike amplitude measurement device
Including the pulse spike amplitude measurement circuit as described in any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620133027.2U CN205562658U (en) | 2016-02-22 | 2016-02-22 | Pulse spike amplitude measuring device and measuring circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620133027.2U CN205562658U (en) | 2016-02-22 | 2016-02-22 | Pulse spike amplitude measuring device and measuring circuit thereof |
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| Publication Number | Publication Date |
|---|---|
| CN205562658U true CN205562658U (en) | 2016-09-07 |
Family
ID=56818341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620133027.2U Withdrawn - After Issue CN205562658U (en) | 2016-02-22 | 2016-02-22 | Pulse spike amplitude measuring device and measuring circuit thereof |
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| Country | Link |
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| CN (1) | CN205562658U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652071A (en) * | 2016-02-22 | 2016-06-08 | 深圳市明微电子股份有限公司 | Pulse peak amplitude measuring device and measuring circuit thereof |
| CN107527594A (en) * | 2017-09-22 | 2017-12-29 | 昆山龙腾光电有限公司 | A kind of backlight drive circuit of pulse signal adjustment circuit and LCDs |
| CN107966604A (en) * | 2017-11-21 | 2018-04-27 | 广电计量检测（西安）有限公司 | Peak voltage triggering catches circuit and system |
-
2016
- 2016-02-22 CN CN201620133027.2U patent/CN205562658U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652071A (en) * | 2016-02-22 | 2016-06-08 | 深圳市明微电子股份有限公司 | Pulse peak amplitude measuring device and measuring circuit thereof |
| CN105652071B (en) * | 2016-02-22 | 2018-12-28 | 深圳市明微电子股份有限公司 | Pulse spike amplitude measurement device and its measuring circuit |
| CN107527594A (en) * | 2017-09-22 | 2017-12-29 | 昆山龙腾光电有限公司 | A kind of backlight drive circuit of pulse signal adjustment circuit and LCDs |
| CN107966604A (en) * | 2017-11-21 | 2018-04-27 | 广电计量检测（西安）有限公司 | Peak voltage triggering catches circuit and system |
| CN107966604B (en) * | 2017-11-21 | 2020-05-19 | 广电计量检测（西安）有限公司 | Peak voltage trigger capture circuit and system |
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