CN202975105U - Active differential voltage wireless probe - Google Patents
Active differential voltage wireless probe Download PDFInfo
- Publication number
- CN202975105U CN202975105U CN 201220690508 CN201220690508U CN202975105U CN 202975105 U CN202975105 U CN 202975105U CN 201220690508 CN201220690508 CN 201220690508 CN 201220690508 U CN201220690508 U CN 201220690508U CN 202975105 U CN202975105 U CN 202975105U
- Authority
- CN
- China
- Prior art keywords
- probe
- wireless
- differential voltage
- active differential
- noise filter
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Measuring Leads Or Probes (AREA)
Abstract
The utility model discloses an active differential voltage wireless probe which comprises a power supply, a voltage divider, a wireless transmitter, a differential module, a noise filter and a probe needle. The probe needle, the noise filter, the voltage divider, the differential module and the wireless transmitter are sequentially and electrically connected. The differential module is further connected with the power supply electrically. Since the active differential voltage wireless probe is provided with the noise filter, electrical signals detected by the probe can have high signal-to-noise ratio, and full preparation for an oscillometer to truly restore waveform images of current and voltage signals can be made. Meanwhile, since the active differential voltage wireless probe is provided with the wireless transmitter, and the electrical signals detected by the probe can be transmitted to the oscillometer wirelessly, effect of probe cables on probe bandwidth can be avoided, and detecting accuracy can be improved. In addition, the distance between a to-be-detected circuit and the oscillometer can be free from the limit of the probe cables; and since the cables are omitted, detection is facilitated.
Description
Technical field
The utility model relates to a kind of for oscillographic active differential voltage wireless probe.
Background technology
Oscillograph is a kind of electronic measuring instrument, it can be transformed into image with electric signal such as electric current, voltage signal, show intuitively the electric signal feature that detects, oscilloprobe is the electronic unit that connects circuit-under-test and oscillograph input end, and its accuracy to measurement result is most important.
Present oscilloprobe mainly is comprised of probe, probe cable and probe connector, and wherein the probe cable great majority have that 1-2 rice is long at least, and the oscilloprobe with probe cable has following shortcoming:
1, probe cable has reduced the probe bandwidth, and cable is longer, and the amplitude of decline is larger, will greatly affect the accuracy that detects.
2, due to the probe cable limited length, the tester must be with circuit to be tested and oscillograph near placing, and is very inconvenient.
3, signal to noise ratio (S/N ratio) is low, truly the waveform image of reduction current and voltage signal.
The utility model content
The technical matters that the utility model solves is to provide a kind of active differential voltage wireless probe, and its signal to noise ratio (S/N ratio) is high, the electric signal that detects can be wirelessly transmitted to the true reduction that oscillograph carries out waveform image.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model content is specific as follows:
A kind of active differential voltage wireless probe, it comprises power supply, division module, wireless launcher, difference block, noise filter and probe; Described probe, noise filter, voltage divider, difference block, wireless launcher are electrical connected successively; Described difference block also is electrical connected with described power supply.
In order to prevent loss occurring after electric signal is sent to difference block by probe, preferably, active differential voltage wireless probe of the present utility model also comprises a signal amplifier; Described signal amplifier is electrically connected between difference block and wireless launcher.
Preferably, described wireless launcher is bluetooth transmitters or radiofrequency launcher.
Compared with prior art, the utility model has produced following beneficial effect:
Active differential voltage wireless probe of the present utility model is by being provided with noise filter, makes its electric signal that detects obtain higher signal to noise ratio (S/N ratio), for oscillograph truly the waveform image of reduction current and voltage signal carry out sufficient preparation.Simultaneously, active differential voltage wireless probe of the present utility model is provided with wireless launcher, the electric signal that detects is wirelessly transmitted to oscillograph, thereby can avoid probe cable on the impact of probe bandwidth, be conducive to improve the accuracy of detection, in addition, the distance between circuit to be detected and oscillograph is not limited by probe cable, and owing to there is no cable, make detection more convenient.
The utility model will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the more preferably structural representation of embodiment of active differential voltage wireless probe of the present utility model.
Embodiment
As shown in Figure 1, active differential voltage wireless probe of the present utility model, it comprises power supply, division module, wireless launcher, difference block, noise filter and probe; Described probe, noise filter, voltage divider, difference block, wireless launcher are electrical connected successively; Described difference block also is electrical connected with described power supply.
In order to prevent loss occurring after electric signal is sent to difference block by probe, particularly, active differential voltage wireless probe of the present utility model also comprises a signal amplifier; Described signal amplifier is electrically connected between difference block and wireless launcher.
Particularly, described wireless launcher is bluetooth transmitters or radiofrequency launcher.
For a person skilled in the art, can make other various corresponding changes and distortion according to technical scheme described above and design, and these all changes and the distortion all should belong to the protection domain of the utility model claim within.
Claims (3)
1. active differential voltage wireless probe, it is characterized in that: it comprises power supply, division module, wireless launcher, difference block, noise filter and probe; Described probe, noise filter, voltage divider, difference block, wireless launcher are electrical connected successively; Described difference block also is electrical connected with described power supply.
2. active differential voltage wireless probe as claimed in claim 1, is characterized in that: also comprise a signal amplifier; Described signal amplifier is electrically connected between difference block and wireless launcher.
3. active differential voltage wireless probe as claimed in claim 1 or 2, it is characterized in that: described wireless launcher is bluetooth transmitters or radiofrequency launcher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690508 CN202975105U (en) | 2012-12-12 | 2012-12-12 | Active differential voltage wireless probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220690508 CN202975105U (en) | 2012-12-12 | 2012-12-12 | Active differential voltage wireless probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202975105U true CN202975105U (en) | 2013-06-05 |
Family
ID=48516163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220690508 Expired - Fee Related CN202975105U (en) | 2012-12-12 | 2012-12-12 | Active differential voltage wireless probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202975105U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353577A (en) * | 2016-08-19 | 2017-01-25 | 中国电力科学研究院 | System and method for measuring direct voltage based on wireless transmission |
-
2012
- 2012-12-12 CN CN 201220690508 patent/CN202975105U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353577A (en) * | 2016-08-19 | 2017-01-25 | 中国电力科学研究院 | System and method for measuring direct voltage based on wireless transmission |
| CN106353577B (en) * | 2016-08-19 | 2020-04-17 | 中国电力科学研究院 | Direct-current voltage measuring system and method based on wireless transmission |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102928800A (en) | Device for detecting current measurement accuracy of Rogowski coil | |
| CN203069672U (en) | Loop resistance testing system | |
| CN111880052A (en) | Hand-held type partial discharge detection device based on bluetooth interconnection terminal cluster | |
| CN203965152U (en) | A kind of portable engine combined test stand | |
| CN201464577U (en) | Electric field strength acquisition device and fault detection device for composite insulator | |
| CN103293566B (en) | Signal detection circuit of atmospheric ozone sonde | |
| CN202102047U (en) | High-tension side small current tester | |
| CN202975141U (en) | Range-adaptive digital voltmeter | |
| CN203644366U (en) | Testing apparatus of response time of display screen | |
| CN202975105U (en) | Active differential voltage wireless probe | |
| CN202794278U (en) | High-precision handheld type digital oscilloscope | |
| CN202975071U (en) | Wireless active probe of oscilloscope | |
| CN203786176U (en) | Intelligent mobile terminal based portable oscilloscope | |
| CN204065226U (en) | A kind of instantaneous peak voltage measuring instrument | |
| CN203745542U (en) | Rapid lossless impedance spectroscopy system | |
| CN204206117U (en) | A kind of amplifier of creatures' physical electric signals circuit of fast detector | |
| CN202382848U (en) | Portable vibration signal analyzer | |
| CN104678339A (en) | Calibration device, system and method for probe type microwave voltage measurement system | |
| CN103499746A (en) | Differnet-end double-display type earth resistance tester | |
| CN103868617A (en) | Platinum resistor temperature measuring circuit | |
| CN203929896U (en) | Anti-explosion digital earth resistance tester | |
| CN203909242U (en) | Copper metal steam concentration detection system based on micrometer scale sensor | |
| CN103575949A (en) | High-accuracy handhold digital oscilloscope | |
| CN202975065U (en) | Active probe of oscilloscope | |
| CN202133705U (en) | Multifunctional patrol rod used in patrol |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20201212 |