CN202948052U - Digital voltammeter based on measuring chip - Google Patents
Digital voltammeter based on measuring chip Download PDFInfo
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- CN202948052U CN202948052U CN 201220623972 CN201220623972U CN202948052U CN 202948052 U CN202948052 U CN 202948052U CN 201220623972 CN201220623972 CN 201220623972 CN 201220623972 U CN201220623972 U CN 201220623972U CN 202948052 U CN202948052 U CN 202948052U
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Abstract
The utility model discloses a digital voltammeter based on a measuring chip. The digital voltammeter comprises a processor and a sampling module which are mutually connected, the sampling module comprises a signal processing circuit for processing input signals and the measuring chip for sampling and calculating the processed signals, and the signal processing circuit is connected with the measuring chip. The digital voltammeter is cheap in price, simple in peripheral circuit, capable of simultaneously achieving rapid and accurate true virtual value measurement of voltage and current, and capable of having abundant additional functions.
Description
Technical field
The utility model relates to a kind of digital voltage reometer, relates in particular to a kind of digital voltage reometer based on computation chip.
Background technology
At present, the digital voltage reometer of widespread use is to use special-purpose multimeter chip design mostly, the digital watch of some simple types uses dual integration AD to build, instrument with true rms measurement is to adopt the dedicated convert chip mostly, first interchange is converted to the direct current signal of respective magnitudes, and then gather with AD, the digital voltage reometer of the above-mentioned type has the following disadvantages:
1. mostly do not support true rms measurement based on the volometer of dual integration AD and special-purpose multimeter chip structure, for the larger error of measurement existence of non-sinusoidal AC signal.
2. because the real effective conversion chip is expensive, the real effective volometer that adopts this type of chip to build is expensive.And this type of instrument needs first AC signal is converted to the direct current signal of corresponding amplitude, and then with the AD sampling, peripheral circuit is complicated, may introduce additional transformed error thus, and easily be subjected to external interference.
3. switching rate is slow, can't realize the Quick Acquisition of data.
4. only have the single channel measurement function, measure when can't realize voltage and current.
5. scarcely possess RCI, can't realize uploading of data, be difficult to consist of Auto-Test System.
The utility model content
Do not support true rms measurement for solving above-mentioned existing digital voltage reometer, the problem that switching rate is slow, the utility model adopts following technical scheme:
The utility model provides a kind of digital voltage reometer based on computation chip, it comprises: interconnective processor and sampling module, described sampling module comprises the signal conditioning circuit that input signal is nursed one's health and the computation chip that the signal after conditioning is sampled and calculated, and signal conditioning circuit is connected with computation chip.
The utility model also provides a kind of digital voltage reometer based on computation chip, it comprises: the signal conditioning circuit that input signal is nursed one's health, the computation chip of sampling and calculating nursing one's health signal afterwards, and the processor that the data that computation chip calculates are called, described signal conditioning circuit, computation chip and processor connect successively.
Above-mentioned a kind of digital voltage reometer based on computation chip has been realized the true rms measurement of electric current and voltage with lower cost.In addition, it comprises communication module and human-computer interaction module, and possesses RCI, can consist of easily Auto-Test System.And, possess the simultaneously ability of measuring voltage electric current owing to having adopted computation chip, having made again, also have the additional functions such as frequency, angle, power of measuring-signal.Moreover owing to adopting computation chip, sampling, switching rate are fast, and peripheral circuit is simple and reliable, and processor need not complicated computing, and the value that directly reads the computation chip corresponding registers just can obtain measurement result, and programming is simple.
Description of drawings
Fig. 1 is a kind of digital voltage reometer one embodiment schematic diagram based on computation chip of the utility model.
Fig. 2 is sampling module 12 schematic diagram shown in Figure 1.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.
See also Fig. 1, it is a kind of digital voltage reometer one embodiment schematic diagram based on computation chip of the utility model.
The utility model provides a kind of digital voltage reometer based on computation chip, and it comprises: processor 11, sampling module 12, human-computer interaction module 13, communication module 14, memory module 15, and power module 16.Wherein, processor 11 is connected with sampling module 12, human-computer interaction module 13, communication module 14, memory module 15 respectively.Power module 16 is based on the power supply of the digital voltage reometer of computation chip, and certainly, power module 16 also provides power supply for processor 11 and sampling module 12.Power module 16 is selected isolated form three road power supplies, for communication, sampling, other modules provide insulation blocking, prevents that each single component of digital voltage reometer from being subject to bringing disaster to other parts when extraneous high pressure damages, guaranteeing the reliability of system.
See also Fig. 2, it is sampling module 12 schematic diagram shown in Figure 1.
Described sampling module 12 comprises signal conditioning circuit 121 and computation chip 122.Signal conditioning circuit 121 is connected with computation chip 122.121 pairs of input signals of signal conditioning circuit are nursed one's health, signal after 122 pairs of conditionings of computation chip is sampled and calculates, the data that 11 pairs of computation chips 122 of processor calculate are called, and described signal conditioning circuit 121, computation chip 122 and processor 11 connect successively.Computation chip 122 is realized the true rms measurement fast, accurately of voltage and current simultaneously.
Wherein, signal conditioning circuit 121 is used for the conditioning to signal, such as decay, filtering, amplification, VI conversion etc., popularly says that at first electric current and voltage to be measured passes through the conditioning of signal conditioning circuit 121, makes it the sampling of proper measurement chip 122.Computation chip 122 is used for sampling and calculate through the signal after signal conditioning circuit 121 conditionings, in the present embodiment, sampling and calculating that computation chip 122 carries out signal according to pattern and the parameter of processor 11 configurations, and will sample and return to processor 11 with result of calculation, the display screen that processor 11 can be controlled human-computer interaction module 13 shows data in some way, also the form of data with appointment can be stored in memory module 15, can also data transfer be given extraneous by communication module 14.
Described human-computer interaction module 13 be mouse, keyboard, touch-screen, display screen, telepilot or sound and light signal controller one of them.
Described communication module 14 is used for to processor 11 transfer instructions, perhaps gives the data transmission of processor 11 appointments extraneous.
Certainly, except communication module 14 can be to processor 11 transfer instructions, human-computer interaction module 13 also can be to processor 11 transfer instructions.
The utility model provides a kind of embodiment principle of work of the digital voltage reometer based on computation chip to be: processor 11 reasonably configures each assembly of digital voltage reometer according to arranging of operating personnel, and the digital voltage reometer is ready.when receiving the next trigger command of communication module 14 transmission or receiving the trigger command that human-computer interaction module 13 is sent, processor 11 just begins to control sampling module 12 and carries out the sampling of electric current and voltage, at first electric current and voltage to be measured passes through the conditioning of signal conditioning circuit 121, make it the sampling of proper measurement chip 122, sampling and calculating that computation chip 122 carries out signal according to pattern and the parameter of processor 11 configurations, and result is returned to processor 11, the display screen that processor 11 can be controlled human-computer interaction module 13 shows data in some way, also the form of data with appointment can be stored in memory module 15, can also data transfer be given extraneous by communication module 14.
A kind of digital voltage reometer based on computation chip of the utility model embodiment has been realized the true rms measurement of electric current and voltage with lower cost.In addition, it comprises communication module and human-computer interaction module, and possesses RCI, can consist of easily Auto-Test System.And, possess the simultaneously ability of measuring voltage electric current owing to having adopted computation chip, having made again, also have the additional functions such as frequency, angle, power of measuring-signal.Moreover owing to adopting computation chip, sampling, switching rate are fast, and peripheral circuit is simple and reliable, and processor need not complicated computing, and the value that directly reads the computation chip corresponding registers just can obtain measurement result, and programming is simple.
Here description of the present utility model and application is illustrative, is not to want with scope restriction of the present utility model in the above-described embodiments.Here the distortion of disclosed embodiment and change is possible, and the various parts of the replacement of embodiment and equivalence are known for those those of ordinary skill in the art.Those skilled in the art are noted that in the situation that do not break away from spirit of the present utility model or essential characteristic, and the utility model can be with other form, structure, layout, ratio, and realizes with other assembly, material and parts.In the situation that do not break away from the utility model scope and spirit, can carry out other distortion and change to disclosed embodiment here.
Claims (8)
1. digital voltage reometer based on computation chip, it is characterized in that, comprise: interconnective processor and sampling module, described sampling module comprises the signal conditioning circuit that input signal is nursed one's health and the computation chip that the signal after conditioning is sampled and calculated, and signal conditioning circuit is connected with computation chip.
2. a kind of digital voltage reometer based on computation chip according to claim 1, is characterized in that, also comprises: the human-computer interaction module that is connected with described processor.
3. a kind of digital voltage reometer based on computation chip according to claim 2, is characterized in that, described human-computer interaction module be mouse, keyboard, touch-screen, display screen, telepilot or sound and light signal controller one of them.
4. a kind of digital voltage reometer based on computation chip according to claim 1, is characterized in that, also comprises: the communication module that is connected with described processor.
5. a kind of digital voltage reometer based on computation chip according to claim 1, is characterized in that, also comprises the memory module that is connected with described processor.
6. a kind of digital voltage reometer based on computation chip according to claim 1, is characterized in that, also is included as the power module that processor and sampling module provide power supply.
7. a kind of digital voltage reometer based on computation chip according to claim 6, is characterized in that, described power module is isolated form three road power supplies.
8. digital voltage reometer based on computation chip, it is characterized in that, comprise: the signal conditioning circuit that input signal is nursed one's health, the computation chip of sampling and calculating nursing one's health signal afterwards, and the processor that the data that computation chip calculates are called, described signal conditioning circuit, computation chip and processor connect successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220623972 CN202948052U (en) | 2012-11-22 | 2012-11-22 | Digital voltammeter based on measuring chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220623972 CN202948052U (en) | 2012-11-22 | 2012-11-22 | Digital voltammeter based on measuring chip |
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| Publication Number | Publication Date |
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| CN202948052U true CN202948052U (en) | 2013-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220623972 Expired - Fee Related CN202948052U (en) | 2012-11-22 | 2012-11-22 | Digital voltammeter based on measuring chip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897955A (en) * | 2015-06-26 | 2015-09-09 | 济南中维世纪科技有限公司 | Intelligent current voltmeter |
| CN111650426A (en) * | 2020-06-10 | 2020-09-11 | 浙江瑞银电子有限公司 | Heavy current direct current ammeter based on twin-core technique |
-
2012
- 2012-11-22 CN CN 201220623972 patent/CN202948052U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897955A (en) * | 2015-06-26 | 2015-09-09 | 济南中维世纪科技有限公司 | Intelligent current voltmeter |
| CN111650426A (en) * | 2020-06-10 | 2020-09-11 | 浙江瑞银电子有限公司 | Heavy current direct current ammeter based on twin-core technique |
| CN111650426B (en) * | 2020-06-10 | 2021-06-25 | 浙江瑞银电子有限公司 | Heavy current direct current ammeter based on twin-core technique |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130522 Termination date: 20151122 |