CN102539870A - Portable high-precision multifunctional testing instrument - Google Patents
Portable high-precision multifunctional testing instrument Download PDFInfo
- Publication number
- CN102539870A CN102539870A CN 201010596556 CN201010596556A CN102539870A CN 102539870 A CN102539870 A CN 102539870A CN 201010596556 CN201010596556 CN 201010596556 CN 201010596556 A CN201010596556 A CN 201010596556A CN 102539870 A CN102539870 A CN 102539870A
- Authority
- CN
- China
- Prior art keywords
- circuit
- microprocessor
- portable high
- testing instrument
- multifunctional testing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Recording Measured Values (AREA)
Abstract
The invention discloses a portable high-precision multifunctional testing instrument, which comprises a power supply, a microprocessor, a function selecting circuit and a signal conditioning circuit. The signal conditioning circuit comprises an operational amplifier circuit and a 16-bit A/D (analog/digital) converter circuit, an input end of the operational amplifier circuit is connected with a photoelectric coupling solid relay circuit and an alternating-current effective value detecting circuit, an input end of the photoelectric coupling solid relay circuit is connected with the microprocessor, a voltage-dividing network circuit, a voltage acquisition network circuit and a scaling-method resistance measuring circuit, an output end of the voltage-dividing network circuit is successively connected with the alternating-current effective value detecting circuit and a frequency measuring circuit, an output end of the frequency measuring circuit is connected with the 16-bit A/D converter circuit, an output end of the microprocessor is connected with an LCD (liquid crystal display) circuit, an SD (secure digital) storage card and a voice driving circuit, and an output end of the voice driving circuit is connected with an audio output circuit. The portable high-precision multifunctional testing instrument is compact in structure, convenient to carry, complete in function, high in precision, fine in service effect and convenient in popularization and use.
Description
Technical field
The invention belongs to the technology of instrument and meter field, especially relate to a kind of portable high-accuracy multifunctional testing instrument.
Background technology
Test instrumentations such as digital multimeter, analog oscilloscope, digital oscilloscope are widely used in the electric measurement field, still, and the digital multimeter of people's use at present; Though have little, the convenient carrying of volume, can not be used for measured waveform, though and analog oscilloscope, digital oscilloscope measurement function are complete; But it is big to have volume, the defective that is not easy to carry, and; Mostly digital multimeter of the prior art, analog oscilloscope and digital oscilloscope, measurement result are that this just requires the user to watch measurement result with eyes with digital display mode output; Therefore the user needs to watch measurement result while measuring, and so not only can make the user divert one's attention to make and measure the generation error, also possibly cause the measurement short circuit; Thereby human body is produced injury or makes device damage; In addition, more or distribute when closeer when measurement point, efficiency of measurement will be greatly affected.In addition, measurement instrument of the prior art does not have the recording storage function, on one side need the gauger to measure, Yi Bian from line item, efficiency of measurement is low, also easy occurrence record confusion and misregistration.
Summary of the invention
Technical matters to be solved by this invention is to above-mentioned deficiency of the prior art a kind of portable high-accuracy multifunctional testing instrument to be provided, and its circuit structure is compact; Reasonable in design, volume is little, and is in light weight; Be easy to carry, complete function, precision are high, have solved display mode in the prior art is single, do not have automatic recording function defective and deficiency; Result of use is good, is convenient to promote the use of.
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: a kind of portable high-accuracy multifunctional testing instrument; It is characterized in that: comprise power supply, microprocessor and be connected on the function selector circuit and the signal conditioning circuit of microprocessor input end; Said signal conditioning circuit constitutes by operation amplifier circuit with 16 A/D converter circuit that operation amplifier circuit joins; The input termination of said operation amplifier circuit is used for photoelectricity coupling solid-state relay circuit and the AC value testing circuit that range automaticallyes switch; The input termination microprocessor of said photoelectricity coupling solid-state relay circuit, be used for measuring voltage the potential-divider network circuit, be used to the rule of three measuring resistance circuit measuring the voltage acquisition lattice network of electric current and be used for measuring resistance; The input end of the output termination AC value testing circuit of said potential-divider network circuit; The output termination frequency measurement circuit of said AC value testing circuit; The signal that the input end of 16 A/D converter circuit of output termination of said frequency measurement circuit, said microprocessor receiving function select circuit and signal conditioning circuit to export is also given LCD display circuit, SD storage card and the voice driven circuit that is connected on its output terminal, the output termination audio output circuit of said voice driven circuit through output control signal corresponding after the analyzing and processing.
Above-mentioned a kind of portable high-accuracy multifunctional testing instrument, it is characterized in that: the output terminal of said microprocessor also is connected to printer driver circuit, the output termination mini-printer of said printer driver circuit.
Above-mentioned a kind of portable high-accuracy multifunctional testing instrument is characterized in that: said microprocessor is 16 single-chip microcomputer SPCE061A of Ling Yang company that on-chip memory stores the synthetic speech phoneme library.
Above-mentioned a kind of portable high-accuracy multifunctional testing instrument, it is characterized in that: said AC value testing circuit is made up of chip LT1088.
Above-mentioned a kind of portable high-accuracy multifunctional testing instrument, it is characterized in that: said LCD display circuit is made up of 12864 liquid crystal.
Above-mentioned a kind of portable high-accuracy multifunctional testing instrument is characterized in that: also comprise the automatic shutdown circuitry that is connected between power supply and the microprocessor.
Above-mentioned a kind of portable high-accuracy multifunctional testing instrument, it is characterized in that: said power supply is general dry battery, Li-Ion rechargeable battery, nickel-hydrogen chargeable cell or solar energy charging battery.
The present invention compared with prior art has the following advantages:
1, circuit level of the present invention is high, and reliability is high, and volume is little, is easy to carry.
2, the present invention adopts 16 A/D converter circuit to do signal condition, and measuring accuracy is high.
3, the basic function of digital multimeter generally that the present invention is not only integrated; Also has graphical display function; Can measure constantly and the waveform Presentation Function the waveform of lower frequency; Can also adopt the mode of voice broadcast to be shown to the user measured value, have the function of the storage of SD card, mini-printer printing, person easy to use prints measurement data and checks measurement data.
4, the present invention has designed automatic shutdown circuitry, saves energy and prolonged its serviceable life.
In sum, circuit structure of the present invention is compact, and reasonable in design, volume is little; In light weight, be easy to carry complete function, precision height; Solved display mode in the prior art is single, do not have automatic recording function defective and deficiency, result of use is good, be convenient to promote the use of.
Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.
Description of drawings
Fig. 1 is a circuit block diagram of the present invention.
Description of reference numerals:
The 1-power supply; The 2-microprocessor; The 3-function selector circuit;
The 4-signal conditioning circuit; The 4-1-operation amplifier circuit; 4-2-16 position A/D converter
Circuit;
The 5-photoelectricity solid-state relay 6-AC value that is coupled detects electric 7-potential-divider network circuit;
The device circuit; The road;
8-voltage acquisition lattice network; 9-rule of three measuring resistance circuit; The 11-frequency measurement circuit;
The 12-LCD display circuit; The 13-SD storage card; 14-voice driven circuit;
The 15-audio output circuit; The 16-printer driver circuit; The 17-mini-printer;
The 18-automatic shutdown circuitry.
Embodiment
As shown in Figure 1; The present invention includes power supply 1, microprocessor 2 and be connected on the function selector circuit 3 and the signal conditioning circuit 4 of microprocessor 2 input ends; Said signal conditioning circuit 4 constitutes by operation amplifier circuit 4-1 with 16 A/D converter circuit 4-2 that operation amplifier circuit 4-1 joins; The input termination of said operation amplifier circuit 4-1 is used for the photoelectricity coupling solid-state relay circuit 5 and AC value testing circuit 6 that range automaticallyes switch; The input termination microprocessor 2 of said photoelectricity coupling solid-state relay circuit 5, be used for measuring voltage potential-divider network circuit 7, be used to the rule of three measuring resistance circuit 9 measuring the voltage acquisition lattice network 8 of electric current and be used for measuring resistance; The input end of the output termination AC value testing circuit 6 of said potential-divider network circuit 7; The output termination frequency measurement circuit 11 of said AC value testing circuit 6; The input end of 16 A/D converter circuit of output termination 4-2 of said frequency measurement circuit 11; The signal that said microprocessor 2 receiving functions select circuit 3 and signal conditioning circuit 4 to be exported is also given LCD display circuit 12, SD storage card 13 and the voice driven circuit 14 that is connected on its output terminal, the output termination audio output circuit 15 of said voice driven circuit 14 through output control signal corresponding after the analyzing and processing.
The output terminal of said microprocessor 2 also is connected to printer driver circuit 16, the output termination mini-printer 17 of said printer driver circuit 16.
Said microprocessor 2 stores 16 single-chip microcomputer SPCE061A of Ling Yang company of synthetic speech phoneme library for on-chip memory.
Said AC value testing circuit 6 is made up of chip LT1088.
Said LCD display circuit 12 is made up of 12864 liquid crystal.
Also comprise the automatic shutdown circuitry 18 that is connected between power supply 1 and the microprocessor 2.
Said power supply 1 is general dry battery, Li-Ion rechargeable battery, nickel-hydrogen chargeable cell or solar energy charging battery.
During use, at first select to measure gear according to the measurement needs through function selector circuit 3, the signal that microprocessor 2 receiving functions selection circuit 3 is exported is also exported control signal corresponding to photoelectricity coupling solid-state relay circuit 5, carries out the automatic adjusting of range; Then; The amount that needs measurement from the input port access of potential-divider network circuit 7, voltage acquisition lattice network 8 or rule of three measuring resistance circuit 9; Signal is through signal conditioning circuit 4 back outputs; The output control signal corresponding is given LCD display circuit 12, SD storage card 13 and the voice driven circuit 14 that is connected on its output terminal after signal that microprocessor 2 receiving signals reason circuit 4 is exported and the process analyzing and processing, and the amount that measure will be presented on the LCD display circuit 12 in real time, and drives the real-time broadcasting that audio output circuit 15 carries out measured value through voice driven circuit 14; Measured value with real-time storage in SD storage card 13; Print data if desired, microprocessor 2 will be exported control signal and give printer driver circuit 16, and printer driver circuit 16 drives mini-printers 17 needed content is printed.
If the user does not in time close this test instrumentation when being used to complete, automatic shutdown circuitry 18 will be closed this test instrumentation automatically when the regular hour arrives, saves energy and prolonged serviceable life of test instrumentation.
The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any restriction, every technical spirit changes any simple modification, change and the equivalent structure that above embodiment did according to the present invention, all still belongs in the protection domain of technical scheme of the present invention.
Claims (7)
1. portable high-accuracy multifunctional testing instrument; It is characterized in that: comprise power supply (1), microprocessor (2) and be connected on the function selector circuit (3) and the signal conditioning circuit (4) of microprocessor (2) input end; 16 A/D converter circuit (4-2) that said signal conditioning circuit (4) joins by operation amplifier circuit (4-1) with operation amplifier circuit (4-1) constitute; The input termination of said operation amplifier circuit (4-1) is used for photoelectricity coupling solid-state relay circuit (5) and the AC value testing circuit (6) that range automaticallyes switch; The input termination microprocessor (2) of said photoelectricity coupling solid-state relay circuit (5), be used for the potential-divider network circuit (7) of measuring voltage, the rule of three measuring resistance circuit (9) that is used to measure the voltage acquisition lattice network (8) of electric current and is used for measuring resistance; The input end of the output termination AC value testing circuit (6) of said potential-divider network circuit (7); The output termination frequency measurement circuit (11) of said AC value testing circuit (6); The input end of 16 A/D converter circuit of the output termination of said frequency measurement circuit (11) (4-2); The signal that said microprocessor (2) receiving function selects circuit (3) and signal conditioning circuit (4) to be exported is also given LCD display circuit (12), SD storage card (13) and the voice driven circuit (14) that is connected on its output terminal, the output termination audio output circuit (15) of said voice driven circuit (14) through output control signal corresponding after the analyzing and processing.
2. according to the described a kind of portable high-accuracy multifunctional testing instrument of claim 1; It is characterized in that: the output terminal of said microprocessor (2) also is connected to printer driver circuit (16), the output termination mini-printer (17) of said printer driver circuit (16).
3. according to claim 1 or 2 described a kind of portable high-accuracy multifunctional testing instrument, it is characterized in that: said microprocessor (2) stores 16 single-chip microcomputer SPCE061A of Ling Yang company of synthetic speech phoneme library for on-chip memory.
4. according to claim 1 or 2 described a kind of portable high-accuracy multifunctional testing instrument, it is characterized in that: said AC value testing circuit (6) is made up of chip LT1088.
5. according to the described a kind of portable high-accuracy multifunctional testing instrument of claim 1, it is characterized in that: said LCD display circuit (12) is made up of 12864 liquid crystal.
6. according to claim 1 or 2 described a kind of portable high-accuracy multifunctional testing instrument, it is characterized in that: also comprise the automatic shutdown circuitry (18) that is connected between power supply (1) and the microprocessor (2).
7. according to claim 1 or 2 described a kind of portable high-accuracy multifunctional testing instrument, it is characterized in that: said power supply (1) is general dry battery, Li-Ion rechargeable battery, nickel-hydrogen chargeable cell or solar energy charging battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010596556 CN102539870A (en) | 2010-12-19 | 2010-12-19 | Portable high-precision multifunctional testing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010596556 CN102539870A (en) | 2010-12-19 | 2010-12-19 | Portable high-precision multifunctional testing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102539870A true CN102539870A (en) | 2012-07-04 |
Family
ID=46347257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010596556 Pending CN102539870A (en) | 2010-12-19 | 2010-12-19 | Portable high-precision multifunctional testing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102539870A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104243233A (en) * | 2014-09-05 | 2014-12-24 | 重庆工商职业学院 | Audio signal automatic detection method and system based on IP data |
| CN104391152A (en) * | 2014-11-25 | 2015-03-04 | 苏州立瓷电子技术有限公司 | Oscilloscope with improved operational amplifier circuit |
| CN104393629A (en) * | 2014-09-30 | 2015-03-04 | 中国电子科技集团公司第四十一研究所 | Intelligent power supply management circuit of digital oscillograph |
| CN104459258A (en) * | 2014-11-25 | 2015-03-25 | 苏州立瓷电子技术有限公司 | Oscilloscope based on lamination amplification structural circuit design |
-
2010
- 2010-12-19 CN CN 201010596556 patent/CN102539870A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104243233A (en) * | 2014-09-05 | 2014-12-24 | 重庆工商职业学院 | Audio signal automatic detection method and system based on IP data |
| CN104393629A (en) * | 2014-09-30 | 2015-03-04 | 中国电子科技集团公司第四十一研究所 | Intelligent power supply management circuit of digital oscillograph |
| CN104393629B (en) * | 2014-09-30 | 2017-01-18 | 中国电子科技集团公司第四十一研究所 | Intelligent power supply management circuit of digital oscillograph |
| CN104391152A (en) * | 2014-11-25 | 2015-03-04 | 苏州立瓷电子技术有限公司 | Oscilloscope with improved operational amplifier circuit |
| CN104459258A (en) * | 2014-11-25 | 2015-03-25 | 苏州立瓷电子技术有限公司 | Oscilloscope based on lamination amplification structural circuit design |
| CN104391152B (en) * | 2014-11-25 | 2017-03-15 | 江苏福克斯新能源科技有限公司 | A kind of oscillograph for improving operation amplifier circuit |
| CN104459258B (en) * | 2014-11-25 | 2017-05-24 | 江苏福克斯新能源科技有限公司 | Oscilloscope based on lamination amplification structural circuit design |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101435838B (en) | Apparatus for measuring capacitance capacity | |
| CN113064018B (en) | Direct current charging pile metering detection circuit, device and method | |
| CN201859213U (en) | Intelligent energy meter verifying device | |
| CN102890243B (en) | A kind of battery electric quantity measuring circuit, measurement apparatus and battery meter | |
| CN102809729B (en) | A kind of electrokinetic cell electric quantity metering device | |
| CN201199264Y (en) | Multi purpose meter for checking process | |
| CN102539870A (en) | Portable high-precision multifunctional testing instrument | |
| CN208588813U (en) | A kind of battery group real-time monitoring device | |
| CN201054018Y (en) | Intelligent accumulator capacity test instrument | |
| CN201935948U (en) | Portable multifunctional test instrument with high precision | |
| CN209513936U (en) | Direct-current charging post tests circuit and its test device | |
| CN202929180U (en) | Measuring instrument for state of charge of rechargeable battery | |
| CN101826221A (en) | Electric digital display charging-discharging circulating accumulated multifunctional recorder of electric bicycle | |
| CN220323426U (en) | Circuit insulation resistance measuring device | |
| CN216900728U (en) | Comprehensive electric system maintenance instrument | |
| CN218412724U (en) | Portable storage battery floating charge parameter detection device | |
| CN216117834U (en) | Handheld transformer no-load loss test circuit | |
| CN211785747U (en) | Clamp-on ammeter | |
| CN2229087Y (en) | Automotive circuit tester | |
| CN213780237U (en) | Full-time detection device for working state of large laboratory instrument | |
| CN201576051U (en) | Checking and real reading electric energy meter | |
| CN109061525A (en) | L ED driving power supply performance test system | |
| CN209496088U (en) | A kind of portable charged stake tester | |
| CN204188797U (en) | The AC voltage test check device of calibrating robotization single-phase electric energy meter streamline | |
| CN216052144U (en) | Automatic calibrating device of digital multimeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120704 |