CN102879653A - Three-dimensional probe and intelligent sandstorm electric field measuring system based thereon - Google Patents
Three-dimensional probe and intelligent sandstorm electric field measuring system based thereon Download PDFInfo
- Publication number
- CN102879653A CN102879653A CN2012103695450A CN201210369545A CN102879653A CN 102879653 A CN102879653 A CN 102879653A CN 2012103695450 A CN2012103695450 A CN 2012103695450A CN 201210369545 A CN201210369545 A CN 201210369545A CN 102879653 A CN102879653 A CN 102879653A
- Authority
- CN
- China
- Prior art keywords
- electric field
- dimensional probe
- signal
- shielding case
- dimensional
- 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.)
- Granted
Links
Images
Abstract
The invention discloses a three-dimensional probe and an intelligent sandstorm electric field measuring system based thereon. The system comprises the three-dimensional probe, a front-end processing unit and a rear-end processing unit. The three-dimensional probe contacts with a sandstorm electric field and is used for acquiring an X-directional field signal, a Y-directional field signal and a Z-directional field signal in the electric field. The front-end processing unit is connected with an X-directional signal acquisition end, a Y-directional signal acquisition end and a Z-directional signal acquisition end respectively and is used for performing primary processing to the field signals in the corresponding directions, which come from the three-dimensional probe. The rear-end processing unit is connected with the front-end processing unit and is used for selecting and comprehensively processing primary processing results respectively. The defects of poor sandstorm resistance, no ability to interference resistance, low intelligence degree and the like in the prior art can be overcome, so that the three-dimensional probe and the intelligent sandstorm electric field measuring system based on the three-dimensional probe have the advantages that sandstorm resistance is high, a lateral electric field can be shielded, measuring range is wide, and intelligence degree is high.
Description
Technical field
The present invention relates to dust storm electric field measurement equipment technical field, particularly, relate to a kind of intelligent dust storm electric field measurement system and three-dimensional probe based on three-dimensional probe.
Background technology
The dust storm electric field, refer to that a kind of magnitude that forms with a certain amount of electric charge owing to the motion grains of sand (dirt) is higher than the electric field of a fine atmospheric electric field 2-3 order of magnitude in wind sand environment, directly affect the formation and development process of stream, the variation of sediment discharge intensity and normal transmission and the reception of communication radar signal.How to measure accurately and real-time the dust storm electric field in different wind sand environments (stream, sandstorm and dust devil), become a popular problem of environmental mechanics research field.
At present, electric field measurement equipment commonly used mainly contains two kinds: a kind of is the capacitance-type vibration formula atmospheric electric field measuring equipment that utilizes electric field induction electric charge and the development of capacitor discharge principle, and another kind is the rotation protected type atmospheric electric field measuring equipment that utilizes the development of electric field shielding principle.This two classes atmospheric electric field measuring equipment all exists some problems to make its cisco unity malfunction when being applied to special wind sand environment electric field measurement, and wherein topmost problem has following three aspects:
⑴ the different-grain diameter that is mingled with in the wind sand environment and the grains of sand of shape can impact vibration and the rotary inductive parts of electric field measurement equipment probe front end in the process of measuring, its result affects correctness and the precision of experimental result so that the inductive means of probe can't steady operation;
⑵ the existing atmospheric electric field measuring equipment linearity is better, respond sensitive working range mainly in 100kV/m, and in wind sand environment, particularly had been found that the existence of 200kV/m-300kV/m size electric field in sandstorm, therefore existing atmospheric electric field measuring equipment also can't satisfy the measurement of wind sand environment electric field from the angle of range;
⑶ dust storm electric field is because environment and the condition of its generation are very complicated, therefore its direction of an electric field is not what determine, its direction in three dimensions and size are all in continuous variation, and existing atmospheric electric field measuring equipment does not possess the independent measurement ability to the electric field three-dimensional component, therefore just can not intactly provide the distributed in three dimensions result of dust storm electric field yet.
As seen, also be not suitable at present the dust storm electric field is carried out effectively and the specific electric measuring equipment of Measurement accuracy, be cause lack so far to the dust storm electric field comparatively system observation and to the bottleneck of comprehensive announcement of its rule.In realizing process of the present invention, the inventor finds there is at least the sand-proof ability in the prior art, do not possess the defectives such as antijamming capability and intelligent degree are low.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose a kind of intelligent dust storm electric field measurement system based on three-dimensional probe, with the advantage that realizes that the sand-proof ability is strong, can shield lateral electric fields, measurement range is wide and intelligent degree is high.
Another object of the present invention is to, propose a kind of three-dimensional probe that uses based on the intelligent dust storm electric field measurement system of three-dimensional probe.
For achieving the above object, the technical solution used in the present invention is: a kind of intelligent dust storm electric field measurement system based on three-dimensional probe, comprise with the dust storm electric field and contacting, and be used for gathering the on-the-spot X-direction signal of dust storm electric field, the three-dimensional probe of Y-direction signal and Z-direction signal, respectively with the X-direction signals collecting end of described three-dimensional probe, Y-direction signals collecting end is connected with Z-direction signals collecting end, and be used for carrying out the front-end processing unit of primary treatment from the on-site signal of three-dimensional probe respective direction, and be connected with described front-end processing unit respectively, and be used for the primary treatment result is selected back-end processing unit with overall treatment.
Further, described front-end processing unit comprises that parallel join is in the respective direction signals collecting end of three-dimensional probe and the X-direction induced signal pretreatment module between the analog switch module, Y-direction induced signal pretreatment module and Z-direction induced signal pretreatment module.
Further, described X-direction induced signal pretreatment module, Y-direction induced signal pretreatment module and Z-direction induced signal pretreatment module include elementary amplification and filtration module at least.
Further, described back-end processing unit, comprise the analog switch module of passing through for the on-site signal of selecting respective direction, and is connected with described analog switch module successively and is used for the rear end that the on-site signal that the analog switch module is selected to pass through is processed is successively amplified and filtering processing module, sample maintenance and peak detection block, A/D module, the single-chip microcomputer with timing function and Computer Processing terminal; Described single-chip microcomputer also is connected with the analog switch module, is used for the control simulation switch module and selects the on-site signal of respective direction to pass through.
Further, described back-end processing unit also comprises the external interface module that is connected with described Computer Processing terminal.
Further, described three-dimensional probe comprises basic point position take three-dimensional coordinate system as the physical construction basic point, the X-direction shielding case that stretches out respectively, Y-direction shielding case and Z-direction shielding case on X-direction, Y-direction and the Z-direction of three-dimensional coordinate system; And, be built in respectively the respective direction shielding case inner and be used for measuring the unidirectional electrical field measurement vibrating capacitance probe of respective direction electric field signal.
Further, the unidirectional electrical field measurement vibrating capacitance probe of each direction, comprise and be arranged on the outside and sheet that shakes towards the outside of external electric field of respective direction shielding case, for prevent the dust storm grains of sand impact be arranged on the respective direction shielding case inner and with respective external inside corresponding to the sheet sheet that shakes that shakes, and it is inner and be used for driving the described inside sheet that shakes and carry out periodic vibration and gather the oscillator of the sensor current signal of respective direction electric field signal to be arranged on the respective direction shielding case.
Simultaneously, another technical scheme that the present invention adopts is: more than one described three-dimensional probes that use based on the intelligent dust storm electric field measurement system of three-dimensional probe, comprise basic point position take three-dimensional coordinate system as the physical construction basic point, the X-direction shielding case that on X-direction, Y-direction and the Z-direction of three-dimensional coordinate system, stretches out respectively, Y-direction shielding case and Z-direction shielding case; And, be built in respectively the respective direction shielding case inner and be used for measuring the unidirectional electrical field measurement vibrating capacitance probe of respective direction electric field signal.
Further, the unidirectional electrical field measurement vibrating capacitance probe of each direction, comprise and be arranged on the outside and sheet that shakes towards the outside of external electric field of respective direction shielding case, for prevent the dust storm grains of sand impact be arranged on the respective direction shielding case inner and with respective external inside corresponding to the sheet sheet that shakes that shakes, and it is inner and be used for driving the described inside sheet that shakes and carry out periodic vibration and gather the oscillator of the sensor current signal of respective direction electric field signal to be arranged on the respective direction shielding case.
Intelligent dust storm electric field measurement system and the three-dimensional probe based on three-dimensional probe of various embodiments of the present invention, because comprising with the dust storm electric field, this system contacts, and be used for gathering the on-the-spot X-direction signal of dust storm electric field, the three-dimensional probe of Y-direction signal and Z-direction signal, respectively with the X-direction signals collecting end of three-dimensional probe, Y-direction signals collecting end is connected with Z-direction signals collecting end, and be used for carrying out the front-end processing unit of primary treatment from the on-site signal of three-dimensional probe respective direction, and be connected with front-end processing unit respectively, and be used for the primary treatment result is selected back-end processing unit with overall treatment; Can adopt three-dimensional probe, main single-chip microcomputer and Computer Processing terminal by having timing function carried out Intelligent Measurement and control in the three dimensions scope to the on-site signal of dust storm electric field; Thereby can overcome sand-proof ability in the prior art, not possess antijamming capability and the low defective of intelligent degree, with the advantage that realizes that the sand-proof ability is strong, can shield lateral electric fields, measurement range is wide and intelligent degree is high.
Other features and advantages of the present invention will be set forth in the following description, and, partly from instructions, become apparent, perhaps understand by implementing the present invention.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Accompanying drawing is used to provide a further understanding of the present invention, and consists of the part of instructions, is used for together with embodiments of the present invention explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural representation of the shielding case of three-dimensional probe of the present invention;
Fig. 2 is the principle of work schematic diagram that the present invention is based on the intelligent dust storm electric field measurement system of three-dimensional probe.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, is not intended to limit the present invention.
Embodiment one
According to the embodiment of the invention, provide a kind of three-dimensional probe.As shown in Figure 1, the present embodiment comprises basic point position take three-dimensional coordinate system as the physical construction basic point, the X-direction shielding case that stretches out respectively on X-direction, Y-direction and the Z-direction of three-dimensional coordinate system, Y-direction shielding case and Z-direction shielding case; And, be built in respectively the respective direction shielding case inner and be used for measuring the unidirectional electrical field measurement vibrating capacitance probe of respective direction electric field signal.
Particularly, the unidirectional electrical field measurement vibrating capacitance probe of each direction, comprise and be arranged on the outside and sheet that shakes towards the outside of external electric field of respective direction shielding case, for prevent the dust storm grains of sand impact be arranged on the respective direction shielding case inner and with respective external inside corresponding to the sheet sheet that shakes that shakes, and it is inner and be used for driving that the inner sheet that shakes carries out periodic vibration and the oscillator that gathers the sensor current signal of respective direction electric field signal to be arranged on the respective direction shielding case.
The three-dimensional probe of above-described embodiment is a kind of three-dimensional dust storm electric field measurement probe, can be used at dust storm electric field space place, realizes the three-dimensional synchronously dust storm electric field measurement of a spatial point; This three-dimensional probe has lateral electric fields function and the sand-proof function of direction that maskable is surveyed, and has possessed again the function of some three-dimensional synchro measures simultaneously.
The three-dimensional probe of above-described embodiment so that the single-point in each space probe (such as unidirectional electrical field measurement vibrating capacitance probe), can realize that all three-dimensional measures simultaneously.The structure of this three-dimensional probe has been done combination at original unidirectional probe and has been improved, and wherein the basic point of the physical construction of three-dimensional probe is the basic point position of unidirectional probe space coordinates.Horizontal X, Y space coordinates, vertically respectively stretch out a shielding case on the Z direction, (built-in unidirectional electrical field measurement vibrating capacitance probe wherein shakes towards the outside of external electric field sheet, in order to prevent the shock effect of the dust storm grains of sand, be fixed in the shielding case, corresponding to the outside inside of the sheet sheet that shakes that shakes, driven by oscillator and to carry out periodic vibration and gather sensor current signal).
Embodiment two
According to the embodiment of the invention, provide a kind of intelligent dust storm electric field measurement system based on three-dimensional probe.As depicted in figs. 1 and 2, the present embodiment comprises the three-dimensional probe that contacts and be used for gathering the on-the-spot X-direction signal of dust storm electric field, Y-direction signal and Z-direction signal with the dust storm electric field, be connected with X-direction signals collecting end, Y-direction signals collecting end and the Z-direction signals collecting end of three-dimensional probe respectively and be used for carrying out the front-end processing unit of primary treatment from the on-site signal of three-dimensional probe respective direction, and is connected with front-end processing unit respectively and for the primary treatment result being selected and the back-end processing unit of overall treatment.This three-dimensional probe can referring to the related description of above-described embodiment one and Fig. 1, not repeat them here.
Wherein, above-mentioned front-end processing unit comprises that parallel join is in the respective direction signals collecting end of three-dimensional probe and the X-direction induced signal pretreatment module between the analog switch module, Y-direction induced signal pretreatment module and Z-direction induced signal pretreatment module.X-direction induced signal pretreatment module, Y-direction induced signal pretreatment module and Z-direction induced signal pretreatment module include elementary amplification and filtration module at least.
Above-mentioned back-end processing unit, comprise the analog switch module of passing through for the on-site signal of selecting respective direction, be connected with the analog switch module successively and be used for the rear end that the on-site signal that the analog switch module is selected to pass through is processed is successively amplified and filtering processing module, sampling maintenance and peak detection block, A/D module, the single-chip microcomputer with timing function and Computer Processing terminal, and the external interface module that is connected with the Computer Processing terminal; Single-chip microcomputer also is connected with the analog switch module, is used for the control simulation switch module and selects the on-site signal of respective direction to pass through.This back-end processing unit has adopted singlechip CPU to carry out intelligent measure.
After each unidirectional electrical field measurement vibrating capacitance probe in the three-dimensional probe that adopts above-described embodiment one, be connected with respectively the induced signal pretreatment module of respective direction, to the variable-current signal that corresponding unidirectional electrical field measurement vibrating capacitance probe collects, tentatively amplify and the filtering processing.
The intelligent dust storm electric field measurement system based on three-dimensional probe of above-described embodiment mainly forms by pretreatment module, analog switch module, rear end amplification filtering module, sampling maintenance and peak detection block, A/D module and the single-chip microcomputer (single-chip microcomputer that comprises timer function) of three-dimensional probe, three road probe induced signals, Computer Processing terminal with to the interface module of outer computer.Wherein, three-dimensional probe is used in three direction X-directions of space single-point acquiring, Y-direction, and the dust storm field-generated current signal of vertical Z-direction, wherein, after the induction current of each direction collects by unidirectional electrical field measurement vibrating capacitance probe, enter the pretreatment module at probe rear.Carry out the pre-amplification of sensor current signal, pre-filtering is processed.Three road X, Y after finishing dealing with, Z-direction signal together are linked into the analog switch module of back-end processing unit.The address signal of analog switch module is periodically provided by the single-chip microcomputer with timer function.Single-chip microcomputer will provide the gating signal of X, Y, Z-direction signal in turn, therefore X, Y, Z cycle in turn are by the analog switch module, the amplification filtering that enters into the rear end is processed, sampling keeps and peak value detects, the A/D conversion, digital signal after the processing, to enter singlechip CPU, singlechip CPU gathers gating signal according to the direction of sending, the digital signal that receives is stored classification, then correspondence is got well corresponding direction, output to the interface module of computing machine, be transferred in the software for user's collection, calculating.
It should be noted that at last: the above only is the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment the present invention is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. intelligent dust storm electric field measurement system based on three-dimensional probe, it is characterized in that, comprise with the dust storm electric field and contacting, and be used for gathering the on-the-spot X-direction signal of dust storm electric field, the three-dimensional probe of Y-direction signal and Z-direction signal, respectively with the X-direction signals collecting end of described three-dimensional probe, Y-direction signals collecting end is connected with Z-direction signals collecting end, and be used for carrying out the front-end processing unit of primary treatment from the on-site signal of three-dimensional probe respective direction, and be connected with described front-end processing unit respectively, and be used for the primary treatment result is selected back-end processing unit with overall treatment.
2. the intelligent dust storm electric field measurement system based on three-dimensional probe according to claim 1, it is characterized in that, described front-end processing unit comprises that parallel join is in the respective direction signals collecting end of three-dimensional probe and the X-direction induced signal pretreatment module between the analog switch module, Y-direction induced signal pretreatment module and Z-direction induced signal pretreatment module.
3. the intelligent dust storm electric field measurement system based on three-dimensional probe according to claim 2, it is characterized in that, described X-direction induced signal pretreatment module, Y-direction induced signal pretreatment module and Z-direction induced signal pretreatment module include elementary amplification and filtration module at least.
4. each described intelligent dust storm electric field measurement system based on three-dimensional probe according to claim 1-3, it is characterized in that, described back-end processing unit, comprise the analog switch module of passing through for the on-site signal of selecting respective direction, and is connected with described analog switch module successively and is used for the rear end that the on-site signal that the analog switch module is selected to pass through is processed is successively amplified and filtering processing module, sample maintenance and peak detection block, A/D module, the single-chip microcomputer with timing function and Computer Processing terminal; Described single-chip microcomputer also is connected with the analog switch module, is used for the control simulation switch module and selects the on-site signal of respective direction to pass through.
5. the intelligent dust storm electric field measurement system based on three-dimensional probe according to claim 4 is characterized in that, described back-end processing unit also comprises the external interface module that is connected with described Computer Processing terminal.
6. each described intelligent dust storm electric field measurement system based on three-dimensional probe according to claim 1-3, it is characterized in that, described three-dimensional probe, comprise basic point position take three-dimensional coordinate system as the physical construction basic point, the X-direction shielding case that on X-direction, Y-direction and the Z-direction of three-dimensional coordinate system, stretches out respectively, Y-direction shielding case and Z-direction shielding case; And, be built in respectively the respective direction shielding case inner and be used for measuring the unidirectional electrical field measurement vibrating capacitance probe of respective direction electric field signal.
7. the intelligent dust storm electric field measurement system based on three-dimensional probe according to claim 6, it is characterized in that, the unidirectional electrical field measurement vibrating capacitance probe of each direction, comprise and be arranged on the outside and sheet that shakes towards the outside of external electric field of respective direction shielding case, for prevent the dust storm grains of sand impact be arranged on the respective direction shielding case inner and with respective external inside corresponding to the sheet sheet that shakes that shakes, and it is inner and be used for driving the described inside sheet that shakes and carry out periodic vibration and gather the oscillator of the sensor current signal of respective direction electric field signal to be arranged on the respective direction shielding case.
8. three-dimensional probe that uses based on the intelligent dust storm electric field measurement system of three-dimensional probe according to claim 1, it is characterized in that, comprise basic point position take three-dimensional coordinate system as the physical construction basic point, the X-direction shielding case that on X-direction, Y-direction and the Z-direction of three-dimensional coordinate system, stretches out respectively, Y-direction shielding case and Z-direction shielding case; And, be built in respectively the respective direction shielding case inner and be used for measuring the unidirectional electrical field measurement vibrating capacitance probe of respective direction electric field signal.
9. three-dimensional probe according to claim 8, it is characterized in that, the unidirectional electrical field measurement vibrating capacitance probe of each direction, comprise and be arranged on the outside and sheet that shakes towards the outside of external electric field of respective direction shielding case, for prevent the dust storm grains of sand impact be arranged on the respective direction shielding case inner and with respective external inside corresponding to the sheet sheet that shakes that shakes, and it is inner and be used for driving the described inside sheet that shakes and carry out periodic vibration and gather the oscillator of the sensor current signal of respective direction electric field signal to be arranged on the respective direction shielding case.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210369545.0A CN102879653B (en) | 2012-09-29 | 2012-09-29 | Three-dimensional probe and intelligent sandstorm electric field measuring system based thereon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210369545.0A CN102879653B (en) | 2012-09-29 | 2012-09-29 | Three-dimensional probe and intelligent sandstorm electric field measuring system based thereon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102879653A true CN102879653A (en) | 2013-01-16 |
| CN102879653B CN102879653B (en) | 2015-04-15 |
Family
ID=47481049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210369545.0A Active CN102879653B (en) | 2012-09-29 | 2012-09-29 | Three-dimensional probe and intelligent sandstorm electric field measuring system based thereon |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102879653B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833861A (en) * | 2015-04-30 | 2015-08-12 | 江汉大学 | Three-dimensional electric field intensity measuring apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004205416A (en) * | 2002-12-26 | 2004-07-22 | National Institute Of Advanced Industrial & Technology | Electric field detection probe and three-dimensional electric field measuring method using the same |
| CN1896753A (en) * | 2005-07-14 | 2007-01-17 | 中国科学院电子学研究所 | Inductive electrode electric-field sensor |
| CN102288220A (en) * | 2011-06-13 | 2011-12-21 | 兰州大学 | System for measuring multiple factors such as sandstorm electric field, sand electrification, wind speed and the like synchronously in real time |
| RU2445639C1 (en) * | 2010-12-08 | 2012-03-20 | Государственное образовательное учреждение высшего профессионального образования "Башкирский государственный университет" ГОУ ВПО БашГУ | Electric field intensity measuring method |
| CN202794355U (en) * | 2012-09-29 | 2013-03-13 | 兰州大学 | Intelligent dust storm electric field measuring system based on three-dimensional probe and three-dimensional probe |
-
2012
- 2012-09-29 CN CN201210369545.0A patent/CN102879653B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004205416A (en) * | 2002-12-26 | 2004-07-22 | National Institute Of Advanced Industrial & Technology | Electric field detection probe and three-dimensional electric field measuring method using the same |
| CN1896753A (en) * | 2005-07-14 | 2007-01-17 | 中国科学院电子学研究所 | Inductive electrode electric-field sensor |
| RU2445639C1 (en) * | 2010-12-08 | 2012-03-20 | Государственное образовательное учреждение высшего профессионального образования "Башкирский государственный университет" ГОУ ВПО БашГУ | Electric field intensity measuring method |
| CN102288220A (en) * | 2011-06-13 | 2011-12-21 | 兰州大学 | System for measuring multiple factors such as sandstorm electric field, sand electrification, wind speed and the like synchronously in real time |
| CN202794355U (en) * | 2012-09-29 | 2013-03-13 | 兰州大学 | Intelligent dust storm electric field measuring system based on three-dimensional probe and three-dimensional probe |
Non-Patent Citations (2)
| Title |
|---|
| 张星等: "一种小型三维电场传感器", 《仪器仪表学报》 * |
| 郑凤杰等: "空中三维电场探测系统", 《电子器件》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833861A (en) * | 2015-04-30 | 2015-08-12 | 江汉大学 | Three-dimensional electric field intensity measuring apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102879653B (en) | 2015-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203673078U (en) | Earthquake signal acquisition device with parallel acquisition channels | |
| CN102566796B (en) | Linear acceleration sensor based human-computer interactive detection and processing method for intelligent terminal | |
| CN101975868A (en) | Velocity measurement system of track bicycle | |
| CN104460992B (en) | The finger motion detection means and method of a kind of use infrared radiation carpal ligaments | |
| CN101241088A (en) | High speed X light strong conveyer band detection system | |
| CN102628960B (en) | Velocity and acceleration two-parameter digital geophone | |
| CN104864909A (en) | Road surface pothole detection device based on vehicle-mounted binocular vision | |
| CN103176204A (en) | Wirelessly distributed tunnel prediction detecting device, wirelessly distributed tunnel prediction detecting system and wirelessly distributed tunnel prediction detecting method | |
| CN106526409B (en) | A kind of deformation of transformer winding live testing system and its test method | |
| CN102353831A (en) | Geomagnetic storm detection and early warning system for protecting safe running of power grid | |
| CN103513273A (en) | Land-use four-component digital geophone | |
| CN106052846A (en) | Portable intrinsic safety type vibration signal collection device and vibration information collection method | |
| CN202794355U (en) | Intelligent dust storm electric field measuring system based on three-dimensional probe and three-dimensional probe | |
| CN106097723A (en) | Vehicle based on bias magnetic field is delayed unloading the method for work of reality line detector | |
| CN102879653B (en) | Three-dimensional probe and intelligent sandstorm electric field measuring system based thereon | |
| CN203422666U (en) | Rocker control system | |
| CN202904029U (en) | Low-power nuclear signal pulse amplitude analyzer | |
| CN102937657B (en) | Real-time correction method and system for high-speed atomic force microscopic imaging | |
| CN203011544U (en) | An apd single-photon detector | |
| CN106094009B (en) | Reflection wave velocity observation system based on photoelectric sensor and acceleration transducer | |
| CN202794345U (en) | Intelligent dust storm electric field measuring system with adjustable range based on shield probe | |
| CN204461920U (en) | A kind of concrete bouncing back instrument | |
| CN102879650B (en) | Intelligent range-adjustable sandstorm electric field measuring system based on shielded probe | |
| CN203249603U (en) | Laser tracker used for collecting shape errors of fluidized bed boiler water wall tube | |
| CN206420432U (en) | A kind of nondestructive testing instrument of the protective layer thickness based on C8051 single-chip microcomputers |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |