CN104535837B - A kind of frequency power integrated measurer being wirelessly transferred based on RFID and method - Google Patents
A kind of frequency power integrated measurer being wirelessly transferred based on RFID and method Download PDFInfo
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- CN104535837B CN104535837B CN201410817313.6A CN201410817313A CN104535837B CN 104535837 B CN104535837 B CN 104535837B CN 201410817313 A CN201410817313 A CN 201410817313A CN 104535837 B CN104535837 B CN 104535837B
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Abstract
The present invention proposes a kind of frequency power integrated measurer being wirelessly transferred based on RFID, including：Sample detection microwave components, frequency power Unitary electric circuits for measuring, when base reference and local oscillator generation circuit, RFID circuit module；Input signal is linked into sampling detection microwave components, and in detection microwave components are sampled, signal is allocated by power splitter, carries out power measurement all the way, carries out frequency measurement all the way.It is an advantage of the invention that：Tester small volume, it is convenient for carrying and is used in narrow space position, and the single port input of frequency power, integrated measuring can be realized, testing efficiency is high；It is convenient to build wireless test system, is not limited by equipment under test present position, testing efficiency can be greatly improved by PC control tester.
Description
Technical field
The present invention relates to technical field of measurement and test, more particularly to a kind of frequency power integrated test being wirelessly transferred based on RFID
Device is measured, further relates to a kind of frequency power integral measurement method being wirelessly transferred based on RFID.
Background technology
With the upgrading of electronics, higher requirement is proposed to the safeguard work of electronics.Ensureing
Cheng Zhong, the frequency and power of electronics are the basic indexs for needing frequently to test, in order to ensure to ensure efficiency, it is necessary to will frequency
Rate, power test instrument and other tester networkings form network test information system.
It is at present using wired networking structure information test system, by netting twine by frequency closest to the solution of the present invention
Meter, power meter and other testers and main control computer structure cable network information test system, test data is passed through
Network delivers to main control computer.
The cable network test information system of frequency meter, power meter and main control computer structure, has the following disadvantages：
Frequency meter and dyanamometer volumetric are bigger than normal, it has not been convenient to carry and used in narrow space position；And test frequency and
Power needs that frequency meter and power meter are connected into tested port respectively, and testing efficiency is low；
By equipment under test position limitation, it is inconvenient by netting twine measuring system constructing, is particularly compared in test port
More small spaces, the arrangement of netting twine is very difficult, has a strong impact on testing efficiency.
The content of the invention
The present invention proposes a kind of frequency power integrated test being wirelessly transferred based on RFID (radio RF recognition technology)
Device and method is measured, existing cable network test information system is solved and is stranded by equipment under test position limitation, the arrangement of netting twine
The problem of difficult.
The technical proposal of the invention is realized in this way：
A kind of frequency power integrated measurer being wirelessly transferred based on RFID, including：Sample detection microwave components, frequency
Rate power Unitary electric circuits for measuring, when base reference and local oscillator generation circuit, RFID circuit module；
Input signal is linked into sampling detection microwave components, and in detection microwave components are sampled, power splitter carries out signal
Distribution, carries out power measurement, carries out frequency measurement all the way all the way；
The signal of power measurement is carried out, impedance matching network is first passed around and carries out impedance matching, signal passes through impedance matching
Afterwards, rectified signal pre-amplification circuit is delivered to, converts a signal into positive and negative two-way rectified signal, and by chopper by positive and negative inspection
Ripple signal is converted to AC chopping signal all the way, and the power that AC chopping signal is delivered in frequency power Unitary electric circuits for measuring is surveyed
Circuit is measured, then carries out AD samplings, sampled data delivers to CPU module, and the data that power measurement is completed inside CPU module are adopted
Collect, compute and compensate for；
The another way signal of frequency measurement is carried out, microwave switch, the output letter of microwave switch are delivered to after power splitter work(point
Number there is two-way, low frequency signal delivers to low frequency amplification and rectification circuit, after limited range enlargement, frequency dividing, delivers to pulse-generating circuit；
High-frequency signal delivers to microwave sampler and is sampled down coversion, sample the local oscillation signal of down coversion by when base refer to and local oscillator produces
Circuit provides, and is mixed with the high-frequency signal, inside the microwave sampler after filtering after, export intermediate-freuqncy signal, intermediate frequency
Signal delivers to intermediate frequency amplification and rectification circuit, after limited range enlargement, frequency dividing, delivers to pulse-generating circuit；
In pulse-generating circuit, the signal after dividing passes through comparator, produces the measured pulse for meeting Transistor-Transistor Logic level,
Measured pulse delivers to step-by-step counting frequency measurement circuit；
In step-by-step counting frequency measurement circuit, for low frequency signal, divide ratio is multiplied by after obtaining the frequency values of measured pulse,
It is exactly the precise frequencies value of low frequency signal；For high-frequency signal, the frequency of measured pulse is obtained in step-by-step counting frequency measurement circuit
Value is multiplied by after divide ratio, further according to local oscillator overtone order used in local oscillation signal frequency and microwave sampler, jointly
Obtain the frequency of high-frequency signal；
Base refers to and also produces counting clock in local oscillator generation circuit when described, delivers to step-by-step counting frequency measurement circuit, is arteries and veins
Punching counts frequency measurement circuit and provides counting clock；
RFID circuit module, communicated by network interface with CPU module.
Alternatively, AC chopping signal being divided into two ranges in the power-measuring circuit A16, a range is 1: 1,
One range is 1: 100, and ∑-Δ ADC that the signals of two ranges is sent to one 16 simultaneously is sampled, and sampled data is delivered to
CPU module.
Alternatively, the low frequency signal after limited range enlargement, 8 times of frequency dividings, is delivered in low frequency amplification and rectification circuit
Pulse-generating circuit；
The intermediate-freuqncy signal after limited range enlargement, 2 times of frequency dividings, delivers to pulse production in intermediate frequency amplification and rectification circuit
Raw circuit；
For low frequency signal, 8 are multiplied by after the frequency values of measured pulse are obtained in step-by-step counting frequency measurement circuit, is exactly low frequency
The precise frequencies value of signal；For high-frequency signal, the frequency values that measured pulse is obtained in step-by-step counting frequency measurement circuit are multiplied by 2,
Further according to local oscillator overtone order used in local oscillation signal frequency and sampler, the frequency of high-frequency signal is obtained jointly.
Alternatively, the step-by-step counting frequency measurement circuit carries out frequency measurement, the decrement method using decrement method
Frequency measurement includes：
1) set counting gate Tgate high level effective first, start a frequency measurement, the Tgate times are more than measurement
Time；
2) base counting clock with reference to caused by with local oscillator generation circuit when counting clock Fcuont is described, it is in Tgate
During high level, Fcuont is started counting up, and it is effective to trigger preset gate Tp, and Tp is synchronous by counting clock；
3) after Tp is effective, synchronous gate signal Ts is produced by measured pulse Fin, because Fcuont is asynchronous with Fin,
Then T0, T1 are random burst pulse, and T0, T1 obtain accurate narrow pulse width by interpositioning；
4) in a frequency measurement, by counting to get measured signal Fin periodicity K, time corresponding to K cycle
For Ts=Tp+T0-T1；
5) the frequency F=K/ (Tp+T0-T1) of measured pulse；
The frequency values of measured pulse are obtained, further according to the wave band of input signal, and local oscillation signal frequency and local oscillator is humorous
Ripple number, the exact value of frequency input signal is obtained jointly.
Alternatively, the above-mentioned frequency power integrated measurer being wirelessly transferred based on RFID, in addition to interface module,
Data for tester are shown, key response operation.
Present invention also offers a kind of frequency power integral measurement method being wirelessly transferred based on RFID, input signal connects
Enter to sampling detection microwave components, in detection microwave components are sampled, signal is allocated by power splitter, carries out power survey all the way
Amount, carries out frequency measurement all the way；
The signal of power measurement is carried out, impedance matching network is first passed around and carries out impedance matching, signal passes through impedance matching
Afterwards, rectified signal pre-amplification circuit is delivered to, converts a signal into positive and negative two-way rectified signal, and by chopper by positive and negative inspection
Ripple signal is converted to AC chopping signal all the way, and the power that AC chopping signal is delivered in frequency power Unitary electric circuits for measuring is surveyed
Circuit is measured, then carries out AD samplings, sampled data delivers to CPU module, and the data that power measurement is completed inside CPU module are adopted
Collect, compute and compensate for；
The another way signal of frequency measurement is carried out, microwave switch, the output letter of microwave switch are delivered to after power splitter work(point
Number there is two-way, low frequency signal delivers to low frequency amplification and rectification circuit, after limited range enlargement, frequency dividing, delivers to pulse-generating circuit；
High-frequency signal delivers to microwave sampler and is sampled down coversion, sample the local oscillation signal of down coversion by when base refer to and local oscillator produces
Circuit provides, and is mixed with the high-frequency signal, inside the microwave sampler after filtering after, export intermediate-freuqncy signal, intermediate frequency
Signal delivers to intermediate frequency amplification and rectification circuit, after limited range enlargement, frequency dividing, delivers to pulse-generating circuit；
In pulse-generating circuit, the signal after dividing passes through comparator, produces the measured pulse for meeting Transistor-Transistor Logic level,
Measured pulse delivers to step-by-step counting frequency measurement circuit；
In step-by-step counting frequency measurement circuit, for low frequency signal, divide ratio is multiplied by after obtaining the frequency values of measured pulse,
It is exactly the precise frequencies value of low frequency signal；For high-frequency signal, the frequency of measured pulse is obtained in step-by-step counting frequency measurement circuit
Value is multiplied by after divide ratio, further according to local oscillator overtone order used in local oscillation signal frequency and microwave sampler, jointly
Obtain the frequency of high-frequency signal；
Base refers to and also produces counting clock in local oscillator generation circuit when described, delivers to step-by-step counting frequency measurement circuit, is arteries and veins
Punching counts frequency measurement circuit and provides counting clock；
RFID circuit module is communicated by network interface with CPU module.
Alternatively, AC chopping signal is divided into two ranges in the power-measuring circuit, a range is 1: 1, one
Individual range is 1: 100, and ∑-Δ ADC that the signals of two ranges is sent to one 16 simultaneously is sampled, and sampled data is delivered to
CPU module.
Alternatively, the low frequency signal after limited range enlargement, 8 times of frequency dividings, is delivered in low frequency amplification and rectification circuit
Pulse-generating circuit；
The intermediate-freuqncy signal after limited range enlargement, 2 times of frequency dividings, delivers to pulse production in intermediate frequency amplification and rectification circuit
Raw circuit；
For low frequency signal, 8 are multiplied by after the frequency values of measured pulse are obtained in step-by-step counting frequency measurement circuit, is exactly low frequency
The precise frequencies value of signal；For high-frequency signal, the frequency values that measured pulse is obtained in step-by-step counting frequency measurement circuit are multiplied by 2,
Further according to local oscillator overtone order used in local oscillation signal frequency and microwave sampler, the frequency of high-frequency signal is obtained jointly.
Alternatively, the step-by-step counting frequency measurement circuit carries out frequency measurement using decrement method.
Alternatively, the decrement method frequency measurement includes：
1) set counting gate Tgate high level effective first, start a frequency measurement, the Tgate times are more than measurement
Time；
2) base counting clock with reference to caused by with local oscillator generation circuit when counting clock Fcuont is described, it is in Tgate
During high level, Fcuont is started counting up, and it is effective to trigger preset gate Tp, and Tp is synchronous by counting clock；
3) after Tp is effective, synchronous gate signal Ts is produced by measured pulse Fin, because Fcuont is asynchronous with Fin,
Then T0, T1 are random burst pulse, and T0, T1 obtain accurate narrow pulse width by interpositioning；
4) in a frequency measurement, measured signal Fin periodicity K can be obtained by counting, corresponding to K cycle
Time is Ts=Tp+T0-T1；
5) the frequency F=K/ (Tp+T0-T1) of measured pulse；
The frequency values of measured pulse are obtained, further according to the wave band of input signal, and local oscillation signal frequency and local oscillator is humorous
Ripple number, the exact value of frequency input signal is obtained jointly.
The beneficial effects of the invention are as follows：
(1) integrated measuring of 1.5MHz~20GHz, -15dBm~+20dBm continuous wave signals is realized, and is passed through
RFID is wirelessly transferred form and measurement result is delivered into host computer, is realized in host computer at the monitoring, analysis and data of test result
Reason, while also can be in control of the host computer realization to tester；
(2) RFID that realizes of the present invention is wirelessly transferred accessible coverage and reaches 100 meters, has obstacle to transmit coverage
More than 30 meters.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of control block diagram for the frequency power integrated measurer being wirelessly transferred based on RFID of the present invention；
Fig. 2 is decrement method schematic diagram.
Description of reference numerals：
A1：Sample detection microwave components；
A2：Frequency power Unitary electric circuits for measuring；
A3：Shi Ji is referred to and local oscillator generation circuit；
A4：RFID circuit module；
A5：The interface modules such as liquid crystal press key；
A6：Power splitter；
A7：Impedance matching network；
A8：Rectified signal pre-amplification circuit；
A9：Microwave switch；
A10：Microwave sampler；
A11：Low frequency amplification and rectification circuit；
A12：Intermediate frequency amplification and rectification circuit；
A13：Pulse-generating circuit；
A14：Step-by-step counting frequency measurement circuit；
A15：Low power consumption CPU module；
A16：Power-measuring circuit；
A17：N-type the moon head interface；
L1、L2、L3、L4：RF soft cable.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
The cable network test information system of existing frequency meter, power meter and main control computer structure, frequency meter and work(
Rate meter volume is bigger than normal, it has not been convenient to carries and is used in narrow space position；And test frequency and power are needed respectively by frequency
Meter and power meter are connected to tested port, and testing efficiency is low.The present invention proposes one kind and is based on RFID (radio frequency identification skills
Art) the frequency power integrated measurer that is wirelessly transferred and method, realize 1.5MHz~20GHz, -15dBm~+20dBm
The integrated measuring of continuous wave signal.
As shown in figure 1, the frequency power integrated measurer that the present invention is wirelessly transferred based on RFID, including：Sampling inspection
Ripple microwave components A1, frequency power Unitary electric circuits for measuring A2, when base refer to and local oscillator generation circuit A3, RFID circuit module
The interface module such as A4, liquid crystal press key A5.
1.5MHz~20GHz signal is linked into sampling detection microwave components A1 by N-type the moon head interface A17, is sampling
In detection microwave components A1, input signal is divided into two-way, preferably mean allocation by power splitter A6, carries out power measurement all the way, and one
Road carries out frequency measurement.
The signal for carrying out power measurement first passes around impedance matching network A7 progress impedance matchings, reduces wave detector front end
Signal reflex, improve the power measurement degree of accuracy.Signal is delivered to rectified signal pre-amplification circuit A8, will believed after impedance matching
Number positive and negative two-way rectified signal is converted to, and positive and negative rectified signal is converted to by AC chopping signal all the way by chopper.
The power-measuring circuit A16 that AC chopping signal is delivered in frequency power Unitary electric circuits for measuring A2, surveyed in power
Chopping signal is divided into 2 ranges in amount circuit A16, a range is 1: 1, and a range is 1: 100, the signal of two ranges
It is sent to ∑-Δ the ADC of one 16 simultaneously to be sampled, sampled data delivers to low power consumption CPU modules A 15, in low power consumption CPU mould
The work such as the data acquisition of power measurement is completed inside block A15, is computed and compensated for.
By power splitter A6 signal progress frequency measurement all the way in addition.Signal is delivered to microwave after power splitter A6 work(point and opened
Close A9, microwave switch A9 output there are 2 tunnels, and 1.5MHz~500MHz low frequency signal is delivered to low frequency by RF soft cable L1 and put
Big shaping circuit A11, carries out direct scaling down processing；500MHz~20GHz signal is delivered to microwave sampler A10 and is sampled down
Frequency conversion.The above-mentioned division to low frequency signal and high-frequency signal is only a preferred embodiment, is not intended as to the scope of the present invention
Limitation, those skilled in the art can carry out the division of other modes according to the actual requirements.
500MHz~20GHz sampling down coversion is realized in microwave sampler A10, sample the local oscillation signal of down coversion by
Shi Ji refer to and local oscillator generation circuit A3 provide, when base refer to and local oscillator generation circuit A3 caused by local oscillation signal frequency be
300MHz~420MHz, power is more than+20dBm, and can carry out frequency sweep according to 0.5MHz steppings.In microwave sampler A10
Middle to produce the comb wave that fundamental frequency is local oscillation signal, the measured signal of comb wave and 500MHz~20GHz is mixed, micro-
Inside wave sampler A10 after filtering after, output frequency is 90MHz~120MHz intermediate-freuqncy signal, and intermediate-freuqncy signal passes through radio frequency
Flexible cable L2 delivers to intermediate frequency amplification and rectification circuit A12.
Shi Ji is referred to and local oscillator generation circuit A3, and reference, the temperature of constant-temperature crystal oscillator are provided for 10MHz constant-temperature crystal oscillator by frequency
Spending stability will be within ± 0.02ppm.300MHz~420MHz local oscillation signal is using 10MHz clocks as reference, by monolithic band
VCO (voltage controlled oscillator) broadband synthesizer is produced, and has carried out 2 grades of amplifications, and local oscillation signal is amplified to more than+20dBm.This
The signal that shakes delivers to microwave sampler A10 by RF soft cable L4.Shi Ji is referred to and is also produced frequency in local oscillator generation circuit A3
For 10MHz counting clock, step-by-step counting frequency measurement circuit A14 is delivered to by RF soft cable L3, is step-by-step counting frequency measurement circuit
Counting clock is provided.
1.5MHz~500MHz low frequency signal is in low frequency amplification and rectification circuit A11, by limited range enlargement, 8 times of frequency dividings
Afterwards, pulse-generating circuit A13 is delivered to.
90MHz~120MHz intermediate-freuqncy signal delivers to intermediate frequency amplification and rectification circuit A12, and it is divided by limited range enlargement, 2 times
Afterwards, pulse-generating circuit A13 is delivered to.
1.5MHz~500MHz low frequency signal passes through 2 times points by 8 times of frequency dividings, 90MHz~120MHz intermediate-freuqncy signal
Frequently, pulse-generating circuit A13 is sent into, in pulse-generating circuit A13, the signal after dividing passes through comparator, and generation meets
The measured pulse of 3.3V Transistor-Transistor Logic levels, measured pulse deliver to step-by-step counting frequency measurement circuit A14.For low frequency signal, in pulsimeter
8 are multiplied by after obtaining the frequency values of measured pulse in number frequency measurement circuit A14, is exactly the precise frequencies value of low frequency signal；For high frequency
Signal, obtained in step-by-step counting frequency measurement circuit A14 measured pulse frequency values be multiplied by 2 after, further according to local oscillation signal frequency
With local oscillator overtone order used in microwave sampler, the frequency of high-frequency signal is obtained jointly.
For the frequency counting of measured pulse, mainly completed inside FPGA.Base reference and local oscillator when counting clock is
10MHz counting clocks caused by generation circuit A3, the present invention carry out frequency measurement using decrement method.Decrement method is illustrated
Figure is as shown in Figure 2.The highest frequency precision of the present invention is 1Hz, and the time of measuring of corresponding a cycle is 1s, likewise, frequency
Rate precision is 10Hz, and corresponding time of measuring is 0.1s, frequency accuracy 100Hz, and corresponding time of measuring is 0.01s, frequency
Precision is 1kHz, and corresponding time of measuring is 1us.
Below by taking 1Hz frequency accuracy as an example, the implementation process of decrement method frequency measurement is described in detail：
1) set counting gate Tgate high level effective first, start a frequency measurement, the Tgate times will ensure greatly
In 1s.
2) counting clock Fcuont is 10MHz counting clocks caused by A3, and when Tgate is high level, Fcuont starts
Count, and it is effective to trigger preset gate Tp, Tp is synchronous by 10MHz clocks, time 1s.
3) after Tp is effective, synchronous gate signal Ts is produced by measured pulse Fin, because Fcuont is asynchronous with Fin,
Then T0, T1 are the random burst pulse less than 100ns, and T0, T1 obtain accurate narrow pulse width by interpositioning.
4) in a frequency measurement, measured signal Fin periodicity K can be obtained by counting, corresponding to K cycle
Time is Ts=Tp+T0-T1.
5) then the frequency of measured pulse can obtain F=K/ (Tp+T0-T1).
The frequency values of measured pulse are obtained, further according to the wave band of input signal, and local oscillation signal frequency and local oscillator is humorous
Ripple number, the exact value of frequency input signal is obtained jointly.
RFID circuit modules A 4, communicated by network interface with low power consumption CPU modules A 15, the day of RFID circuit modules A 4
As for the outside of tester, RFID wireless signals reach 100 meters, there is obstacle line by antenna transmission, accessible coverage
Transmit coverage and be more than 30 meters.
The feature operations such as the data that the interface module such as liquid crystal press key A5 completes tester are shown, key response.
Relative to the cable network information test system at present building frequency meter, power meter and main control computer, this hair
The advantages of bright is：Tester small volume, it is convenient for carrying and is used in narrow space position, and the single-ended of frequency power can be realized
Mouth input, integrated measuring, testing efficiency are high；It is convenient to build wireless test system, is not limited by equipment under test present position, can
By PC control tester, to greatly improve testing efficiency.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements made etc., should be included in the scope of the protection with principle.
Claims (7)
- A kind of 1. frequency power integrated measurer being wirelessly transferred based on RFID, it is characterised in that including：It is micro- to sample detection Ripple component, frequency power Unitary electric circuits for measuring, when base reference and local oscillator generation circuit, RFID circuit module；Input signal is linked into sampling detection microwave components, and in detection microwave components are sampled, signal is allocated by power splitter, Power measurement is carried out all the way, carries out frequency measurement all the way；The signal of power measurement is carried out, impedance matching network is first passed around and carries out impedance matching, signal is sent after impedance matching To rectified signal pre-amplification circuit, positive and negative two-way rectified signal is converted a signal into, and positive and negative detection is believed by chopper Number be converted to AC chopping signal all the way, the power measurement electricity that AC chopping signal is delivered in frequency power Unitary electric circuits for measuring Road, AD samplings are then carried out, sampled data delivers to CPU module, and data acquisition, the meter of power measurement are completed inside CPU module Calculate and compensate；The another way signal of frequency measurement is carried out, delivers to microwave switch after power splitter work(point, the output signal of microwave switch has Two-way, low frequency signal deliver to low frequency amplification and rectification circuit, after limited range enlargement, frequency dividing, deliver to pulse-generating circuit；High frequency Signal delivers to microwave sampler and is sampled down coversion, sample the local oscillation signal of down coversion by when base refer to and local oscillator generation circuit There is provided, be mixed with the high-frequency signal, inside the microwave sampler after filtering after, export intermediate-freuqncy signal, intermediate-freuqncy signal Intermediate frequency amplification and rectification circuit is delivered to, after limited range enlargement, frequency dividing, delivers to pulse-generating circuit；In pulse-generating circuit, the signal after dividing passes through comparator, produces the measured pulse for meeting Transistor-Transistor Logic level, is tested Step-by-step counting frequency measurement circuit is delivered in pulse；In step-by-step counting frequency measurement circuit, for low frequency signal, divide ratio is multiplied by after obtaining the frequency values of measured pulse, is exactly The precise frequencies value of low frequency signal；For high-frequency signal, the frequency values that measured pulse is obtained in step-by-step counting frequency measurement circuit multiply After divide ratio, further according to local oscillator overtone order used in local oscillation signal frequency and microwave sampler, obtain jointly The frequency of high-frequency signal；The step-by-step counting frequency measurement circuit carries out frequency measurement, the decrement method frequency measurement bag using decrement method Include：1) set counting gate Tgate high level effective first, start a frequency measurement, the Tgate times are more than time of measuring；2) base counting clock with reference to caused by with local oscillator generation circuit when counting clock Fcuont is described, it is high electric in Tgate Usually, Fcuont is started counting up, and it is effective to trigger preset gate Tp, and Tp is synchronous by counting clock；3) after Tp is effective, synchronous gate signal Ts is produced by measured pulse Fin, because Fcuont is asynchronous with Fin, then T0, T1 are random burst pulse, and T0, T1 obtain accurate narrow pulse width by interpositioning；4) in a frequency measurement, by counting to get measured signal Fin periodicity K, the time corresponding to K cycle is Ts =Tp+T0-T1；5) the frequency F=K/ (Tp+T0-T1) of measured pulse；The frequency values of measured pulse are obtained, further according to the wave band of input signal, and the harmonic wave of local oscillation signal frequency and local oscillator Number, the exact value of frequency input signal is obtained jointly；Base refers to and also produces counting clock in local oscillator generation circuit when described, delivers to step-by-step counting frequency measurement circuit, is pulsimeter Number frequency measurement circuit provides counting clock；RFID circuit module, communicated by network interface with CPU module.
- 2. the frequency power integrated measurer being wirelessly transferred as claimed in claim 1 based on RFID, it is characterised in that institute State in power-measuring circuit and AC chopping signal is divided into two ranges, a range is 1: 1, and a range is 1: 100, two ∑-Δ ADC that the signal of range is sent to one 16 simultaneously is sampled, and sampled data delivers to CPU module.
- 3. the frequency power integrated measurer being wirelessly transferred as claimed in claim 1 based on RFID, it is characterised in thatThe low frequency signal after limited range enlargement, 8 times of frequency dividings, delivers to pulses generation electricity in low frequency amplification and rectification circuit Road；The intermediate-freuqncy signal after limited range enlargement, 2 times of frequency dividings, delivers to pulses generation electricity in intermediate frequency amplification and rectification circuit Road；For low frequency signal, 8 are multiplied by after the frequency values of measured pulse are obtained in step-by-step counting frequency measurement circuit, is exactly low frequency signal Precise frequencies value；For high-frequency signal, the frequency values that measured pulse is obtained in step-by-step counting frequency measurement circuit are multiplied by 2, then root According to local oscillator overtone order used in local oscillation signal frequency and sampler, the frequency of high-frequency signal is obtained jointly.
- 4. the frequency power integrated measurer being wirelessly transferred based on RFID as described in any one of claims 1 to 3, it is special Sign is, in addition to interface module, and the data for tester are shown, key response operation.
- 5. a kind of frequency power integral measurement method being wirelessly transferred based on RFID, it is characterised in that input signal is linked into Detection microwave components are sampled, in detection microwave components are sampled, signal is allocated by power splitter, carries out power measurement all the way, Frequency measurement is carried out all the way；The signal of power measurement is carried out, impedance matching network is first passed around and carries out impedance matching, signal is sent after impedance matching To rectified signal pre-amplification circuit, positive and negative two-way rectified signal is converted a signal into, and positive and negative detection is believed by chopper Number be converted to AC chopping signal all the way, the power measurement electricity that AC chopping signal is delivered in frequency power Unitary electric circuits for measuring Road, AD samplings are then carried out, sampled data delivers to CPU module, and data acquisition, the meter of power measurement are completed inside CPU module Calculate and compensate；The another way signal of frequency measurement is carried out, delivers to microwave switch after power splitter work(point, the output signal of microwave switch has Two-way, low frequency signal deliver to low frequency amplification and rectification circuit, after limited range enlargement, frequency dividing, deliver to pulse-generating circuit；High frequency Signal delivers to microwave sampler and is sampled down coversion, sample the local oscillation signal of down coversion by when base refer to and local oscillator generation circuit There is provided, be mixed with the high-frequency signal, inside the microwave sampler after filtering after, export intermediate-freuqncy signal, intermediate-freuqncy signal Intermediate frequency amplification and rectification circuit is delivered to, after limited range enlargement, frequency dividing, delivers to pulse-generating circuit；In pulse-generating circuit, the signal after dividing passes through comparator, produces the measured pulse for meeting Transistor-Transistor Logic level, is tested Step-by-step counting frequency measurement circuit is delivered in pulse；In step-by-step counting frequency measurement circuit, for low frequency signal, divide ratio is multiplied by after obtaining the frequency values of measured pulse, is exactly The precise frequencies value of low frequency signal；For high-frequency signal, the frequency values that measured pulse is obtained in step-by-step counting frequency measurement circuit multiply After divide ratio, further according to local oscillator overtone order used in local oscillation signal frequency and microwave sampler, obtain jointly The frequency of high-frequency signal；The step-by-step counting frequency measurement circuit carries out frequency measurement, the decrement method frequency measurement bag using decrement method Include：1) set counting gate Tgate high level effective first, start a frequency measurement, the Tgate times are more than time of measuring；2) base counting clock with reference to caused by with local oscillator generation circuit when counting clock Fcuont is described, it is high electric in Tgate Usually, Fcuont is started counting up, and it is effective to trigger preset gate Tp, and Tp is synchronous by counting clock；3) after Tp is effective, synchronous gate signal Ts is produced by measured pulse Fin, because Fcuont is asynchronous with Fin, then T0, T1 are random burst pulse, and T0, T1 obtain accurate narrow pulse width by interpositioning；4) in a frequency measurement, measured signal Fin periodicity K, time corresponding to K cycle can be obtained by counting For Ts=Tp+T0-T1；5) the frequency F=K/ (Tp+T0-T1) of measured pulse；The frequency values of measured pulse are obtained, further according to the wave band of input signal, and the harmonic wave of local oscillation signal frequency and local oscillator Number, the exact value of frequency input signal is obtained jointly；Base refers to and also produces counting clock in local oscillator generation circuit when described, delivers to step-by-step counting frequency measurement circuit, is pulsimeter Number frequency measurement circuit provides counting clock；RFID circuit module is communicated by network interface with CPU module.
- 6. the frequency power integral measurement method being wirelessly transferred as claimed in claim 5 based on RFID, it is characterised in that institute State in power-measuring circuit and AC chopping signal is divided into two ranges, a range is 1: 1, and a range is 1: 100, two ∑-Δ ADC that the signal of range is sent to one 16 simultaneously is sampled, and sampled data delivers to CPU module.
- 7. the frequency power integral measurement method being wirelessly transferred as claimed in claim 5 based on RFID, it is characterised in thatThe low frequency signal after limited range enlargement, 8 times of frequency dividings, delivers to pulses generation electricity in low frequency amplification and rectification circuit Road；The intermediate-freuqncy signal after limited range enlargement, 2 times of frequency dividings, delivers to pulses generation electricity in intermediate frequency amplification and rectification circuit Road；For low frequency signal, 8 are multiplied by after the frequency values of measured pulse are obtained in step-by-step counting frequency measurement circuit, is exactly low frequency signal Precise frequencies value；For high-frequency signal, the frequency values that measured pulse is obtained in step-by-step counting frequency measurement circuit are multiplied by 2, then root According to local oscillator overtone order used in local oscillation signal frequency and microwave sampler, the frequency of high-frequency signal is obtained jointly.
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| CN105606891A (en) * | 2015-10-15 | 2016-05-25 | 成都众志天成科技有限公司 | Ultra-wide-band electromagnetic-signal real-time monitoring system |
| CN105353259B (en) * | 2015-12-09 | 2018-01-23 | 扬州海科电子科技有限公司 | A kind of frequency conversion component Auto-Test System |
| CN108535540B (en) * | 2018-05-08 | 2020-10-23 | 成都信息工程大学 | Method for instantaneously measuring transmitting frequency of magnetron radar |
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