CN106443161B - A kind of power-measuring device that supporting power probe hot plug and method - Google Patents
A kind of power-measuring device that supporting power probe hot plug and method Download PDFInfo
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- CN106443161B CN106443161B CN201610717020.XA CN201610717020A CN106443161B CN 106443161 B CN106443161 B CN 106443161B CN 201610717020 A CN201610717020 A CN 201610717020A CN 106443161 B CN106443161 B CN 106443161B
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- 239000000523 sample Substances 0.000 title claims abstract description 127
- 238000000034 method Methods 0.000 title description 5
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 238000005070 sampling Methods 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims abstract description 6
- 230000003321 amplification Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 9
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 6
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- 238000000691 measurement method Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 6
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- 230000003750 conditioning effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/14—Compensating for temperature change
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Tests Of Electronic Circuits (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention proposes a kind of power-measuring devices for supporting power probe hot plug, it include: power probe, power meter host and cable, power probe includes detecting head and detection plate, thermistor is set at diode in detecting head to detect operating temperature, temperature offset unit is set in detection plate, voltage division processing is carried out to the temperature voltage signal that thermistor exports, through cable ingoing power meter host, after temperature voltage signal ingoing power meter host, enter FPGA for temperature-compensating through ADC sampling unit all the way, enters voltage comparison unit all the way.The compatible original power probe of the present invention and multicore cable, the change of power meter host hardware circuit is small, the time required to warm connection function can effectively reduce replacement probe, improves testing efficiency.
Description
Technical field
The present invention relates to the field of test technology, in particular to a kind of power-measuring device for supporting power probe hot plug,
Further relate to a kind of power measurement method for supporting power probe hot plug.
Background technique
Currently, the measurement to microwave and millimeter wave signal power, mostly uses greatly power meter host+multicore cable+power probe
Form.Power meter host can be equipped with multiple probes, and power bracket, the frequency range of different probe measurements are different.In testing
It is frequently necessary to replace power probe according to the variation of measured signal, general way is to close power meter host, replacement probe, so
Power meter host is opened afterwards.But power meter host switch machine needs for quite a long time, especially installation Winxp or more is
The peak power analyzer switching on and shutting down of system and system self-testing time are up to a few minutes.
Currently, existing power meter does not support warm connection function.After the slotting power probe of heat, power meter host cannot identify spy
Head still needs to identify probe after host is restarted.In addition, additional circuit not can increase due to probe size and power consumption limit,
Universal cordage is also without superfluous signal line for detection of popping one's head in.
Summary of the invention
To solve above-mentioned deficiency of the prior art, the present invention propose a kind of power measurement for supporting power probe hot plug
Device and method.
The technical scheme of the present invention is realized as follows:
A kind of power-measuring device for supporting power probe hot plug, comprising: power probe, power meter host and cable,
Power probe includes detecting head and detection plate, and thermistor is arranged to detect operating temperature, detection plate at diode in detecting head
Middle setting temperature offset unit carries out voltage division processing to the temperature voltage signal that thermistor exports, through cable ingoing power meter master
Machine；
After temperature voltage signal ingoing power meter host, enter FPGA for temperature-compensating through ADC sampling unit all the way, one
Road enters voltage comparison unit；
Voltage comparison unit includes amplifier and voltage comparator, and temperature voltage signal is input to amplifier negative input end,
The negative input end of amplifier also passes through resistance eutral grounding；When being inserted into probe, amplifier output voltage 3V, amplified temperature electricity
Pressure signal enters the negative input end of voltage comparator, and compared with the reference voltage of its positive input terminal, positive input terminal is with reference to electricity
Pressure is 2V, and voltage comparator output low logic level is simultaneously sent to FPGA；When pulling up probe, temperature voltage signal 0, amplifier
Negative input end remains as 0V by resistance eutral grounding after amplifier, and high logic level is exported after voltage comparator and is sent to
FPGA；
FPGA is connect with industrial personal computer module, and industrial personal computer module connection ports are configured to interrupt mode, and industrial personal computer module passes through
Interrupt mode receives the logic level of FPGA output, judges whether probe connects；When being inserted into probe, FPGA exports logic level
It is lower by height, interrupt handling routine judgement is insertion probe, and industrial personal computer module reads probe data, including verification data, probe
Model, probe version number, and probe data is sent to upper level applications refreshing screen and is shown, probe type is shown in screen
Number, and accurate waveform is shown according to probe data combination measured signal in measurement thread；When disconnecting probe connection, FPGA is defeated
Logic level is got higher by low out, and probe is extracted in interrupt handling routine judgement, and industrial personal computer module nullifies probe data, and refreshes screen
Display no longer shows probe model and measured signal waveform.
Optionally, the temperature voltage signal carries out Linear Amplifer by amplifier, by adjusting amplifier positive input terminal
The amplification factor of resistance setting amplifier is bridged between input resistance and positive input terminal and output end.
The invention also provides a kind of power measurement methods for supporting power probe hot plug, including power probe, power
Host and cable are counted, power probe includes detecting head and detection plate, and thermistor is arranged to detect work at diode in detecting head
Make temperature, setting temperature offset unit carries out voltage division processing to the temperature voltage signal that thermistor exports in detection plate, through electricity
Cable ingoing power meter host after temperature voltage signal ingoing power meter host, enters FPGA for temperature through ADC sampling unit all the way
Degree compensation, enters voltage comparison unit all the way；
Voltage comparison unit includes amplifier and voltage comparator, and temperature voltage signal is input to amplifier negative input end,
The negative input end of amplifier also passes through resistance eutral grounding；When being inserted into probe, amplifier output voltage 3V, amplified temperature electricity
Pressure signal enters the negative input end of voltage comparator, and compared with the reference voltage of its positive input terminal, positive input terminal is with reference to electricity
Pressure is 2V, and voltage comparator output low logic level is simultaneously sent to FPGA；When pulling up probe, temperature voltage signal 0, amplifier
Negative input end remains as 0V by resistance eutral grounding after amplifier, and high logic level is exported after voltage comparator and is sent to
FPGA；
FPGA is connect with industrial personal computer module, and industrial personal computer module connection ports are configured to interrupt mode, and industrial personal computer module passes through
Interrupt mode receives the logic level of FPGA output, judges whether probe connects；When being inserted into probe, FPGA exports logic level
It is lower by height, interrupt handling routine judgement is insertion probe, and industrial personal computer module reads probe data, including verification data, probe
Model, version number of popping one's head in, and probe data is sent to upper level applications refreshing screen and is shown, probe type is shown in screen
Number, and accurate waveform is shown according to probe data combination measured signal in measurement thread；When disconnecting probe connection, FPGA is defeated
Logic level is got higher by low out, and probe is extracted in interrupt handling routine judgement, and industrial personal computer module nullifies probe data, and refreshes screen
Display no longer shows probe model and measured signal waveform.
Optionally, the temperature voltage signal carries out Linear Amplifer by amplifier, by adjusting amplifier positive input terminal
The amplification factor of resistance setting amplifier is bridged between input resistance and positive input terminal and output end.
The beneficial effects of the present invention are:
(1) compatible original power probe and multicore cable, the change of power meter host hardware circuit are small；
(2) the time required to warm connection function can effectively reduce replacement probe, testing efficiency is improved.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of functional block diagram for the power-measuring device for supporting power probe hot plug of the present invention；
Fig. 2 is probe hot plug process flow diagram of the invention；
Fig. 3 is the circuit diagram of voltage comparison unit of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Currently, existing power meter does not support warm connection function.The purpose of the present invention is power is visited in power-measuring device
Head and multicore cable, which are not done, to be changed, and is only increased partial circuit in power meter host, by reading probe temperature voltage, is judged power
Whether probe connects, to realize power probe hot plug.
Power-measuring device of the invention is described in detail with reference to the accompanying drawings of the specification.
As shown in Figure 1, power-measuring device of the invention includes: power probe 1, power meter host 2 and cable 5.
Power probe 1 includes detecting head 3 and detection plate 4.In order to realize the temperature to diode detection characteristic in detecting head 3
Thermistor 6 is arranged nearby to detect its operating temperature in compensation, diode, meanwhile, temperature offset unit 7 is set in detection plate 4,
Voltage division processing is carried out to the temperature voltage that thermistor 6 exports.3 output temperature voltage of detecting head is inclined through excess temperature to detection plate 4
It sets after unit 7 through 5 ingoing power meter host 2 of cable.Temperature voltage enters in power meter host 2 by amplification conditioning unit 8
ADC sampling unit 9 carries out analog-to-digital conversion, and digital temperature voltage enters late-class circuit for temperature compensation algorithm.
Due to the limitation of power probe volume and power consumption, the detection signal for hot plug can not be increased, while in cable
Portion is also transmitted without superfluous signal line, therefore is multiplexed to temperature voltage, and temperature voltage when detection plug probe is passed through
Variation identification probe.As shown in Figure 1, entering ADC sampling unit 9 all the way after temperature voltage ingoing power meter host 2 and being used for temperature
Backoff algorithm enters voltage comparison unit 10 all the way.When probe disconnects, 2 input temp voltage of power meter host is 0V, through amplifying
3.3V is exported after conditioning unit 8 and voltage comparison unit 10, FPGA unit 11 is detected as logically high；When probe connection, detecting head 3
Middle 6 output temperature voltage of thermistor exports high level after temperature offset unit 7 and amplification conditioning unit 8 are improved, and passes through
0V is exported after voltage comparison unit 10, FPGA unit 11 is detected as logic low, which connect with industrial personal computer module 12, work
12 connectivity port of control machine module is configured to interrupt mode, and industrial personal computer module 12 receives the logic level by interrupt mode, judgement
Whether probe connects.
As shown in Fig. 2, FPGA unit 11 exports logic level and changes, industrial personal computer module 12 when hot plug probe
Into the interrupt handling routine in device drives, judgement is insertion probe or extracts probe in interrupt handling routine.When slotting
When entering to pop one's head in, FPGA unit 11 exports logic level and is lower by height, and interrupt handling routine judgement is insertion probe, industrial personal computer module
12 read probe data, including verification data, model of popping one's head in, the information such as probe version number, and probe data is sent to upper layer
Application program refreshes screen and shows, shows probe model in screen, and combine tested letter according to probe data in measurement thread
Number accurate waveform of display；When disconnecting probe connection, FPGA unit 11 exports logic level and is got higher by low, and interrupt handling routine is sentenced
Disconnected to extract probe, industrial personal computer module 12 nullifies probe data, and refreshes screen and show, no longer shows probe model and measured signal
Waveform.
Since whether power meter host 2 is connected by reading in probe 1 to have temperature voltage and judge to pop one's head in, it is not required to pair
Probe and cable change upgrade, compatible all probes.Power meter host 2 haves no need to change complete machine structure, it is only necessary to increase electricity
Warm connection function can be realized in pressure comparing unit 10.
As shown in figure 3,1 output temperature voltage signal SENSOR_TEMP of power probe amplifies to amplifier N1 negative input end
The negative input end of device N1 also passes through resistance R26 and is grounded.Temperature voltage signal SENSOR_TEMP is linearly put by amplifier N1
Greatly, amplifier N1 is set by adjusting bridging resistance between amplifier N1 positive input terminal input resistance and positive input terminal and output end
Amplification factor.When being inserted into probe, amplifier N1 output voltage is 3V, and amplified temperature voltage signal enters voltage and compares
The negative input end of device N2, compared with the reference voltage of its positive input terminal, positive input terminal reference voltage is 2V, voltage comparator
N2 output low logic level is simultaneously sent to FPGA, for hot plug of popping one's head in.When pulling up probe, temperature voltage signal SENSOR_
TEMP is 0, and amplifier N1 negative input end is grounded by resistance R26, remains as 0V after amplifier N1, defeated after voltage comparator
High logic level and it is sent to FPGA out.
It is an advantage of the invention that compatible original power probe and multicore cable, the change of power meter host hardware circuit is small,
The time required to warm connection function can effectively reduce replacement probe, testing efficiency is improved.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of power-measuring device for supporting power probe hot plug, comprising: power probe, power meter host and cable, function
Rate probe includes detecting head and detection plate, and setting thermistor detects operating temperature at diode in detecting head, in detection plate
Temperature offset unit is set, voltage division processing is carried out to the temperature voltage signal that thermistor exports, through cable ingoing power meter master
Machine, which is characterized in that
After temperature voltage signal ingoing power meter host, enter FPGA for temperature-compensating through ADC sampling unit all the way, all the way into
Enter voltage comparison unit；
Voltage comparison unit includes amplifier and voltage comparator, and temperature voltage signal is input to amplifier negative input end, amplification
The negative input end of device also passes through resistance eutral grounding；When being inserted into power probe, amplifier output voltage 3V, amplified temperature electricity
Pressure signal enters the negative input end of voltage comparator, and compared with the reference voltage of its positive input terminal, positive input terminal is with reference to electricity
Pressure is 2V, and voltage comparator output low logic level is simultaneously sent to FPGA；When pulling up power probe, temperature voltage signal 0 is put
Big device negative input end remains as 0V by resistance eutral grounding after amplifier, and high logic level is exported after voltage comparator and is sent
To FPGA；
FPGA is connect with industrial personal computer module, and industrial personal computer module connection ports are configured to interrupt mode, and industrial personal computer module passes through interruption
Mode receives the logic level of FPGA output, judges whether power probe connects；When being inserted into power probe, FPGA exports logic
Level is lower by height, and interrupt handling routine judgement is insertion power probe, industrial personal computer module readout power probe data, including school
Data, power probe model and power probe version number are tested, and power probe data are sent to upper level applications and refresh screen
Curtain display shows power probe model in screen, and is shown in measurement thread according to power probe data combination measured signal
Accurate waveform；When disconnecting power probe connection, FPGA output logic level is got higher by low, and function is extracted in interrupt handling routine judgement
Rate probe, industrial personal computer module nullifies power probe data, and refreshes screen and show, no longer shows power probe model and tested letter
Number waveform.
2. a kind of power-measuring device for supporting power probe hot plug as described in claim 1, which is characterized in that the temperature
Spend voltage signal by amplifier carry out Linear Amplifer, by adjusting amplifier positive input terminal input resistance and positive input terminal with it is defeated
The amplification factor of resistance setting amplifier is bridged between outlet.
3. a kind of power measurement method for supporting power probe hot plug, which is characterized in that including power probe, power meter host
And cable, power probe include detecting head and detection plate, at diode thermistor are arranged in detecting head to detect operating temperature,
Temperature offset unit is set in detection plate, voltage division processing is carried out to the temperature voltage signal that thermistor exports, enters function through cable
Rate meter host after temperature voltage signal ingoing power meter host, enters FPGA for temperature-compensating through ADC sampling unit all the way,
Enter voltage comparison unit all the way；
Voltage comparison unit includes amplifier and voltage comparator, and temperature voltage signal is input to amplifier negative input end, amplification
The negative input end of device also passes through resistance eutral grounding；When being inserted into power probe, amplifier output voltage 3V, amplified temperature electricity
Pressure signal enters the negative input end of voltage comparator, compared with the reference voltage of its positive input terminal, the reference of positive input terminal
Voltage is 2V, and voltage comparator output low logic level is simultaneously sent to FPGA；When pulling up power probe, temperature voltage signal 0,
Amplifier negative input end remains as 0V by resistance eutral grounding after amplifier, exports high logic level simultaneously after voltage comparator
It is sent to FPGA；
FPGA is connect with industrial personal computer module, and industrial personal computer module connection ports are configured to interrupt mode, and industrial personal computer module passes through interruption
Mode receives the logic level of FPGA output, judges whether power probe connects；When being inserted into power probe, FPGA exports logic
Level is lower by height, and interrupt handling routine judgement is insertion power probe, industrial personal computer module readout power probe data, including school
Data, power probe model and power probe version number are tested, and power probe data are sent to upper level applications and refresh screen
Curtain display shows power probe model in screen, and is shown in measurement thread according to power probe data combination measured signal
Accurate waveform；When disconnecting power probe connection, FPGA output logic level is got higher by low, and function is extracted in interrupt handling routine judgement
Rate probe, industrial personal computer module nullifies power probe data, and refreshes screen and show, no longer shows power probe model and tested letter
Number waveform.
4. a kind of power measurement method for supporting power probe hot plug as claimed in claim 3, which is characterized in that the temperature
Spend voltage signal by amplifier carry out Linear Amplifer, by adjusting amplifier positive input terminal input resistance and positive input terminal with it is defeated
The amplification factor of resistance setting amplifier is bridged between outlet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610717020.XA CN106443161B (en) | 2016-08-18 | 2016-08-18 | A kind of power-measuring device that supporting power probe hot plug and method |
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| CN201610717020.XA CN106443161B (en) | 2016-08-18 | 2016-08-18 | A kind of power-measuring device that supporting power probe hot plug and method |
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| CN106443161A CN106443161A (en) | 2017-02-22 |
| CN106443161B true CN106443161B (en) | 2019-01-18 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110967555B (en) * | 2019-11-26 | 2021-09-03 | 中电科思仪科技股份有限公司 | Method for improving trigger precision of peak power measurement |
| CN112684234B (en) * | 2021-03-19 | 2021-06-22 | 深圳市鼎阳科技股份有限公司 | Probe identification method of oscilloscope and oscilloscope |
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2016
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