CN102116800A - Multi-resistance measuring method for satisfying wireless signal output and measuring device - Google Patents
Multi-resistance measuring method for satisfying wireless signal output and measuring device Download PDFInfo
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Abstract
The invention discloses a multi-resistance measuring method for satisfying wireless signal output, comprising the following steps: providing a precise analog integrated circuit and a digital circuit, and respectively connecting the precise analog integrated circuit, the digital circuit and a microprocessor chip to build a digital signal transmission path and a digital system; in addition, providing a decoding chip, and providing a communication interface connected with a data integration module built in the microprocessor chip; judging a test function by the microprocessor chip, and providing an analog signal required by measurement; after decoding and processing the analog signal by the decoding chip in an embedded system mode, logically controlling and outputting; conditioning the analog signal generated after digital-to-analogue conversion into a required analogy signal; converting the analog signal into a digital signal by an analogue-to-digital conversion module provided by the decoding chip; receiving and processing all output analog signals and digital signals by a data integration module, and classifying the signals; and after the signal type is indentified by the communication interface, controlling the digital signal and the analog signal to enter different signal transmission paths. The invention also provides a measuring device for realizing the method.
Description
Technical field
The present invention relates to electronic information technical field, relate in particular to a kind of many resistance measurement methods that satisfy wireless signal output, more relate to a kind of measurement mechanism of realizing this method.
Background technology
Electronic measuring instrument is widely used in all trades and professions at present, various electronic surveying tasks are varied, require the detection of electrons personnel to carry multiple electronic measuring instrument and reuse the electronic surveying value that records difference in functionality and application, the surveying instrument of simple function uses different instruments in a large number because of its function singleness correspondence causes measuring process, thereby cause the lengthy and tedious complexity of testing staff's measurement procedure, carry in the process inconvenient.
Current testing tool about electric power and safety aspect all is simple function mostly, and need to measure a plurality of functions in the actual measurement, and or not simple function, the intact insulation of the survey that has, survey conducting, survey ground connection, also want survey time road and line resistance, function of every like this survey just needs a different instrument, just cause measurement loaded down with trivial details, carry inconvenience, measure the cost height, the low many problems of storage that wait of efficiency of measurement.
Summary of the invention
The object of the present invention is to provide a kind of many resistance measurement methods that satisfy wireless signal output, with insulation measurement, conducting low-resistance measurement, grounding resistance measurement, loop resistance measurement, line resistance measurement, voltage measurement and the integrated realization of frequency measurement, another purpose of the present invention is to provide a kind of measurement mechanism of realizing this method, realizes each function control by the software and hardware cooperation.
For effectively solving the problems of the technologies described above, the technical scheme that the present invention takes is as follows:
A kind of many resistance measurement methods that satisfy wireless signal output, this method may further comprise the steps:
(1) accurate Analogous Integrated Electronic Circuits and digital circuit are set and link to each other with little process chip respectively and make up data signal transmission passage and digital display circuit, other is provided with decoding chip and provides the built-in data integration module of communication interface and described little process chip to link to each other;
(2) analog signal processing: judge test function and provide measurement required simulating signal that described simulating signal is through the logic control output after decoding processing under the embedded system pattern of described decoding chip by described little process chip;
(3) digital signal processing: the analog-to-digital conversion module that becomes required simulating signal to provide through described decoding chip the analog signal conditioner that generates after the digital-to-analog conversion is digital signal with analog signal conversion and implements logic control;
(4) data communication output: described data integration module receives and handles simulating signal and the digital signal and the classification of all outputs, and control figure signal and simulating signal enter the unlike signal transmission channel after the described communication interface identification signal kind;
(5) measurement data output: handling measurement result by described step (4) can directly show output with digital signal form, and bootable simulating signal reads the realization measurement function with communication modes after the connection PC terminal on terminal device.
Described step (1) is further comprising the steps of: the analogue measurement module is set, function selecting module, analog-to-digital conversion module, Logic control module, D/A converter module, memory module, the LCD display module, communication module, pressing key processing module and MPU processing module directly links to each other with described little process chip, described function selecting module is provided with insulation measurement, the conducting low-resistance measurement, grounding resistance measurement, loop and line resistance are measured, voltage measurement, seven functional modules of frequency measurement, described digital display circuit are provided with the Based Intelligent Control that is used for function control that directly links to each other with described function selecting module in addition, data acquisition, data storage, data processing module.
Described step (2) is further comprising the steps of: described analogue measurement module provides every functional measurement required simulating signal, make the signal that enters data acquisition module meet the analog to digital converter requirement, and being transferred to digital display circuit, data system is responsible for embedded OS operation, instrument algorithm, analog signal processing, logic control output; Described Logic control module is with other Digital Circuit Control, thereby the analog back-end that described signal output module is simulated analog-digital chip with the internal signal input produces required simulating signal.
Described step (3) is further comprising the steps of: described digital signal provides the metadata cache path when transmitting in described digital circuit, after digital signal shows output, the reverse transmission of digital signal in the cache path generates simulating signal and direct election and selects new signal transmission passage logic control output and change the analog signal transmission passage over to after D/A converting circuit is handled again, directly show output with the form of simulating signal through communication interface control, Communication Control satisfies two kinds of result's outputs of same functional measurement.
Described step (4) is further comprising the steps of: measurement function realizes that the back is by the functional select switch setting, refresh LCD display mode and other corresponding setting, after the user starts measurement, measure safety inspection earlier, if when precondition does not meet the measurement safety requirements, then withdraw from the measurement state, and the prompting user; If when precondition coincidence measurement safety requirements, then carry out corresponding functional modules, then digital signal is carried out computing, processing, measurement result sent LCD show at last and communicated by letter with host computer.
A kind of measurement mechanism of realizing said method, this device comprise hardware platform and the software platform that accurate Analogous Integrated Electronic Circuits, digital integrated circuit and little process chip make up; Described software platform comprises, intelligent control module, data acquisition module, data memory module, data processing module and a plurality of functional module, described hardware platform interconnects the realization exchanges data by external data interface and described software platform, the all hardware module of described hardware platform interconnects by the control transformation circuit, and all modules of described software platform realize the data interaction transmission by the analog and digital signal passage.
Described software platform also comprises intelligent control module, data acquisition module, data memory module and the data processing module that is used for function control, and realizes the data interaction transmission by the analog and digital signal passage.
The hardware of described hardware platform constitute comprise analogue measurement module, function selecting module, analog-to-digital conversion module, Logic control module, D/A converter module, memory module, LCD display module, communication module, by key processing module and MPU processing module.
The functional module of described software platform comprises insulation measurement module, conducting low-resistance measurement module, grounding resistance measurement module, loop resistance measurement module, line resistance measurement module, voltage measurement module and frequency measurement module.
Beneficial effect of the present invention is as follows: hardware platform overall design provided by the invention realizes intelligence operation and simplified measurement operation, has characteristics such as intellectuality, integrated, software implementation; Programming moduleization, functionalization make it be easy to transplant, revise and expansion; Apparatus multifunction of the present invention is integrated, and an instrument can be used for finishing multinomial measuring task, the simplified measurement process; Abundant communication interface can carry out the data upload download and can connect the printing device printout; Enclosure designs completely cuts off interference source, possesses the Automatic Anti-interference function, guarantees the accuracy of measurement result; The multinomial function selecting pattern of instrument is equivalent to the integrated use of many instruments, and is easy to carry and with low cost, can effectively carry out electric system maintenance and power equipment testing; The integrated realization insulation measurement of software platform provided by the invention, conducting low-resistance measurement, grounding resistance measurement, loop resistance measurement, line resistance measurement, voltage measurement and frequency measurement function, effectively solve the lengthy and tedious complexity of testing staff's measurement procedure, carry in the process inconvenient.
The present invention is described in detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the hardware configuration synoptic diagram of device of the present invention;
Fig. 2 is the software flow synoptic diagram of the method for the invention;
Fig. 3 is that the method for the invention software platform makes up and functional task scheduling synoptic diagram.
Embodiment
Referring to Fig. 2 and Fig. 3, a kind of many resistance measurement methods that satisfy wireless signal output, this method may further comprise the steps:
(1) accurate Analogous Integrated Electronic Circuits and digital circuit are set and link to each other with little process chip respectively and make up data signal transmission passage and digital display circuit, other is provided with decoding chip and provides the built-in data integration module of communication interface and described little process chip to link to each other;
(2) analog signal processing: judge test function and provide measurement required simulating signal that described simulating signal is through the logic control output after decoding processing under the embedded system pattern of described decoding chip by described little process chip;
(3) digital signal processing: the analog-to-digital conversion module that becomes required simulating signal to provide through described decoding chip the analog signal conditioner that generates after the digital-to-analog conversion is digital signal with analog signal conversion and implements logic control;
(4) data communication output: described data integration module receives and handles simulating signal and the digital signal and the classification of all outputs, and control figure signal and simulating signal enter the unlike signal transmission channel after the described communication interface identification signal kind;
(5) measurement data output: handling measurement result by described step (4) can directly show output with digital signal form, and bootable simulating signal reads the realization measurement function with communication modes after the connection PC terminal on terminal device.
Described step (1) is further comprising the steps of: the analogue measurement module is set, function selecting module, analog-to-digital conversion module, Logic control module, D/A converter module, memory module, the LCD display module, communication module, pressing key processing module and MPU processing module directly links to each other with described little process chip, described function selecting module is provided with insulation measurement, the conducting low-resistance measurement, grounding resistance measurement, loop and line resistance are measured, voltage measurement, seven functional modules of frequency measurement, described digital display circuit are provided with the Based Intelligent Control that is used for function control that directly links to each other with described function selecting module in addition, data acquisition, data storage, data processing module.
Described step (2) is further comprising the steps of: described analogue measurement module provides every functional measurement required simulating signal, make the signal that enters data acquisition module meet the analog to digital converter requirement, and being transferred to digital display circuit, data system is responsible for embedded OS operation, instrument algorithm, analog signal processing, logic control output; Described Logic control module is with other Digital Circuit Control, thereby the analog back-end that described signal output module is simulated analog-digital chip with the internal signal input produces required simulating signal.
Described step (3) is further comprising the steps of: described digital signal provides the metadata cache path when transmitting in described digital circuit, after digital signal shows output, the reverse transmission of digital signal in the cache path generates simulating signal and direct election and selects new signal transmission passage logic control output and change the analog signal transmission passage over to after D/A converting circuit is handled again, directly show output with the form of simulating signal through communication interface control, Communication Control satisfies two kinds of result's outputs of same functional measurement.
Described step (4) is further comprising the steps of: measurement function realizes that the back is by the functional select switch setting, refresh LCD display mode and other corresponding setting, after the user starts measurement, measure safety inspection earlier, if when precondition does not meet the measurement safety requirements, then withdraw from the measurement state, and the prompting user; If when precondition coincidence measurement safety requirements, then carry out corresponding functional modules, then digital signal is carried out computing, processing, measurement result sent LCD show at last and communicated by letter with host computer.
The many resistance measurements standard parameter value and the measurement range that realize in the present embodiment are as follows:
Insulation measurement: applied voltage is in the megger test: 250V/500V/1000V; Measuring current (during short circuit):＞2mA; Measurement range: 10K Ω～2000M Ω; Measuring accuracy: ± (5%+5).
Conducting small resistance measurement: about applied voltage DC5.0V; Measuring current when 0.00～2.00 Ω measuring current greater than 200mA; Measurement range is 0.05～2000 Ω; Measuring accuracy: ± (5%+5).
Grounding resistance measurement: measuring current 3.2mA (max), test specification: 0～2000 Ω; Measuring accuracy: ± (3%+3).
Loop resistance measurement: applied voltage: 230V ± 10%/45Hz～65Hz; Measuring current and test duration: 20A/20ms; Measurement range: 0.05～2000 Ω; Measuring accuracy: ± (5%+5).
Line resistance is measured: applied voltage: 230V ± 10%/45Hz～65Hz; Measuring current and test duration: 20A/20ms; Measurement range: 0.05～2000 Ω; Measuring accuracy: ± (5%+5).
Ac voltage measurement: measurement range: 0～600V/45～65Hz; The ac voltage measurement precision: ± (3%+3), dc voltage measurement scope: 0～750V; The dc voltage measurement precision: ± (2%+3).
Frequency measurement: measurement range: 45～1KHz; Frequency measurement accuracy: ± (1%+2).
Referring to Fig. 1, a kind of measurement mechanism of realizing said method, this device comprise hardware platform and the software platform that accurate Analogous Integrated Electronic Circuits, digital integrated circuit and little process chip make up; Described software platform comprises, intelligent control module, data acquisition module, data memory module, data processing module and a plurality of functional module, described hardware platform interconnects the realization exchanges data by external data interface and described software platform, the all hardware module of described hardware platform interconnects by the control transformation circuit, and all modules of described software platform realize the data interaction transmission by the analog and digital signal passage.
Described software platform also comprises intelligent control module, data acquisition module, data memory module and the data processing module that is used for function control, and realizes the data interaction transmission by the analog and digital signal passage.
The hardware of described hardware platform constitute comprise analogue measurement module, function selecting module, analog-to-digital conversion module, Logic control module, D/A converter module, memory module, LCD display module, communication module, by key processing module and MPU processing module.
The functional module of described software platform comprises insulation measurement module, conducting low-resistance measurement module, grounding resistance measurement module, loop resistance measurement module, line resistance measurement module, voltage measurement module and frequency measurement module.
The technology path that function realizes in the present embodiment is as follows:
1, adopting accurate Analogous Integrated Electronic Circuits, digital circuit and little process chip to make up process chip makes up hardware platform and adopts MPU AM/BAM system development mode construction software platform;
2, the hardware of described hardware platform constitutes analogue measurement module, function selecting module, analog-to-digital conversion module, Logic control module, D/A converter module, memory module, LCD display module, communication module, button processing and MPU processing module etc.; Described software platform is divided into insulation measurement, conducting low-resistance measurement, grounding resistance measurement, loop and line resistance by test function and measures (auxiliary voltage and frequency measurement module) seven functional modules, also comprises Based Intelligent Control, data acquisition, data storage, data processing module.The cooperation of described hardware platform and software platform is just carried out collection of simulant signal, computing, data processing after realizing test function judged, at last measurement result is shown output by LCD or by communication interface and PC communication.
3, described analogue measurement module provides every functional measurement required simulating signal, makes the signal that enters function selecting module meet the analog to digital converter requirement; Described function selecting module is that MPU switches to the function corresponding passage by decoding chip; Described analog-to-digital conversion module is to be data-signal with analog signal conversion, and passes to MPU; Described MPU control ﹠amp; Processing system modules is to be responsible for embedded OS operation, digital signal processing, logic control output etc.; Described D/A converter module is to convert the digital signal that MPU exports to simulating signal; Described analog back-end module is that the analog signal conditioner that will generate after the digital-to-analog conversion becomes required simulating signal; Described LCD shows, button is handled and communication interface modules is controlled the LCD demonstration respectively, button input, processing and the control of interface communication function, and power module provides power supply for the other system hardware module.
4, each measurement function is realized refreshing LCD display mode and other corresponding setting, after the user starts measurement by the setting of function selecting (knob) switch, measure safety inspection earlier, if, then withdraw from the measurement state when precondition does not meet the measurement safety requirements, and the prompting user; If when precondition coincidence measurement safety requirements, then carry out corresponding functional modules, then digital signal is carried out computing, processing, measurement result sent LCD show at last and communicated by letter with host computer.
The present invention is not limited to above-mentioned embodiment, and all employings and analog structure of the present invention and method thereof realize that all embodiments of function of the present invention are all within protection scope of the present invention.
Claims (9)
1. one kind is satisfied many resistance measurement methods that wireless signal is exported, and it is characterized in that this method may further comprise the steps:
(1) accurate Analogous Integrated Electronic Circuits and digital circuit are set and link to each other with little process chip respectively and make up data signal transmission passage and digital display circuit, other is provided with decoding chip and provides the built-in data integration module of communication interface and described little process chip to link to each other;
(2) analog signal processing: judge test function and provide measurement required simulating signal that described simulating signal is through the logic control output after decoding processing under the embedded system pattern of described decoding chip by described little process chip;
(3) digital signal processing: the analog-to-digital conversion module that becomes required simulating signal to provide through described decoding chip the analog signal conditioner that generates after the digital-to-analog conversion is digital signal with analog signal conversion and implements logic control;
(4) data communication output: described data integration module receives and handles simulating signal and the digital signal and the classification of all outputs, and control figure signal and simulating signal enter the unlike signal transmission channel after the described communication interface identification signal kind;
(5) measurement data output: handling measurement result by described step (4) can directly show output with digital signal form, and bootable simulating signal reads the realization measurement function with communication modes after the connection PC terminal on terminal device.
2. multi-functional integrated electronic measuring method according to claim 1, it is characterized in that, described step (1) is further comprising the steps of: the analogue measurement module is set, function selecting module, analog-to-digital conversion module, Logic control module, D/A converter module, memory module, the LCD display module, communication module, pressing key processing module and MPU processing module directly links to each other with described little process chip, described function selecting module is provided with insulation measurement, the conducting low-resistance measurement, grounding resistance measurement, loop and line resistance are measured, voltage measurement, seven functional modules of frequency measurement, described digital display circuit are provided with the Based Intelligent Control that is used for function control that directly links to each other with described function selecting module in addition, data acquisition, data storage, data processing module.
3. multi-functional integrated electronic measuring method according to claim 1, it is characterized in that, described step (2) is further comprising the steps of: described analogue measurement module provides every functional measurement required simulating signal, make the signal that enters data acquisition module meet the analog to digital converter requirement, and being transferred to digital display circuit, data system is responsible for embedded OS operation, instrument algorithm, analog signal processing, logic control output; Described Logic control module is with other Digital Circuit Control, thereby the analog back-end that described signal output module is simulated analog-digital chip with the internal signal input produces required simulating signal.
4. multi-functional integrated electronic measuring method according to claim 1, it is characterized in that, described step (3) is further comprising the steps of: described digital signal provides the metadata cache path when transmitting in described digital circuit, after digital signal shows output, the reverse transmission of digital signal in the cache path generates simulating signal and direct election and selects new signal transmission passage logic control output and change the analog signal transmission passage over to after D/A converting circuit is handled again, directly show output with the form of simulating signal through communication interface control, Communication Control satisfies two kinds of result's outputs of same functional measurement.
5. multi-functional integrated electronic measuring method according to claim 1, it is characterized in that, described step (4) is further comprising the steps of: measurement function realizes that the back is by the functional select switch setting, refresh LCD display mode and other corresponding setting, after the user starts measurement, measure safety inspection earlier, do not meet the measurement safety requirements if work as precondition, then withdraw from the measurement state, and the prompting user; If when precondition coincidence measurement safety requirements, then carry out corresponding functional modules, then digital signal is carried out computing, processing, measurement result sent LCD show at last and communicated by letter with host computer.
6. a measurement mechanism of realizing the described method of claim 1 is characterized in that, this device comprises hardware platform and the software platform that accurate Analogous Integrated Electronic Circuits, digital integrated circuit and little process chip make up; Described software platform comprises, intelligent control module, data acquisition module, data memory module, data processing module and a plurality of functional module, described hardware platform interconnects the realization exchanges data by external data interface and described software platform, the all hardware module of described hardware platform interconnects by the control transformation circuit, and all modules of described software platform realize the data interaction transmission by the analog and digital signal passage.
7. measurement mechanism according to claim 6, it is characterized in that, described software platform also comprises intelligent control module, data acquisition module, data memory module and the data processing module that is used for function control, and realizes the data interaction transmission by the analog and digital signal passage.
8. measurement mechanism according to claim 6, it is characterized in that, the hardware of described hardware platform constitute comprise analogue measurement module, function selecting module, analog-to-digital conversion module, Logic control module, D/A converter module, memory module, LCD display module, communication module, by key processing module and MPU processing module.
9. measurement mechanism according to claim 6, it is characterized in that the functional module of described software platform comprises insulation measurement module, conducting low-resistance measurement module, grounding resistance measurement module, loop resistance measurement module, line resistance measurement module, voltage measurement module and frequency measurement module.
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Application publication date: 20110706 |