CN102879650B - Intelligent range-adjustable sandstorm electric field measuring system based on shielded probe - Google Patents
Intelligent range-adjustable sandstorm electric field measuring system based on shielded probe Download PDFInfo
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- CN102879650B CN102879650B CN201210369606.3A CN201210369606A CN102879650B CN 102879650 B CN102879650 B CN 102879650B CN 201210369606 A CN201210369606 A CN 201210369606A CN 102879650 B CN102879650 B CN 102879650B
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Abstract
The invention discloses an intelligent range-adjustable sandstorm electric field measuring system based on a shielded probe. The sandstorm electric field measuring system comprises the shielded probe, a front-end processing unit, a rear-end processing unit and a switching unit. The shield probe contacts with a sandstorm electric field and is used for acquiring field signals in the sandstorm electric field, the front-end processing unit is connected with the shielded probe in a signal manner and is used for primary processing of the field signals from the shielded probe, the rear-end processing unit is connected with the front-end processing unit and is used for comprehensive processing of primary processing result from the front-end processing unit under operation modes of manual control or automatic control, and the switching unit is connected with the rear-end processing unit and is used for switching operation modes. Defects of poor sandstorm resistance, lack of interference resistance, low intelligence degree and the like in the prior art can be overcome by the intelligent range-adjustable sandstorm electric field measuring system based on the shielded probe, and accordingly the sandstorm electric field measuring system is high in sandstorm resistance, can shield a lateral electric field and is highly intelligent.
Description
Technical field
The present invention relates to Wind sand electricity technical field of measuring equipment, particularly, relate to a kind of range-adjustable intelligence Wind sand electricity measuring system based on shielding probe.
Background technology
Wind sand electricity, refer to a kind of magnitude of being formed with a certain amount of electric charge due to the motion grains of sand (dirt) in wind sand environment electric field higher than fine day atmospheric electric field 2-3 the order of magnitude, directly affect the formation and development process of stream, the normal transmission of the change of sediment discharge intensity and communication radar signal and reception.How to measure the Wind sand electricity in different wind sand environment (stream, sandstorm and dust devil) accurately and real-time, become a popular problem of environmental mechanics research field.
At present, conventional electric field measurement equipment mainly contains two kinds: a kind of is the capacitance-type vibration formula atmospheric electric field measuring equipment utilizing 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 utilizing electric field shielding principle to develop.This two classes atmospheric electric field measuring equipment all exists some problems when being applied to special wind sand environment electric field measurement makes its cisco unity malfunction, and wherein topmost problem has following three aspects
(1) the different-grain diameter be mingled with in wind sand environment and the grains of sand of shape can impact the vibration of electric field measurement equipment probe front end and rotary inductive parts in the process measured, its result makes the inductive means of popping one's head in cannot steady operation, affects correctness and the precision of experimental result;
(2) the existing atmospheric electric field measuring equipment linearity is better, respond sensitiveer working range mainly within 100kv/m, and in wind sand environment, in sandstorm, particularly had been found that the existence of 200kv/m-300kv/m size electric field, therefore existing atmospheric electric field measuring equipment also cannot meet the measurement of wind sand environment electric field from the angle of range;
Wind sand electricity due to its environment produced and condition very complicated, therefore its direction of an electric field is not what determine, its direction in three dimensions and size are all in continuous change, and existing atmospheric electric field measuring equipment does not possess the independent measurement ability to electric field three-dimensional component, the distributed in three dimensions result of Wind sand electricity therefore also just intactly can not be provided.
Visible, not also being suitable at present carrying out effectively Wind sand electricity and the specific electric measuring equipment of Measurement accuracy, is cause the bottleneck lacked so far the Wind sand electricity comparatively observation of system and the comprehensive announcement to its rule.Realizing in process of the present invention, inventor finding at least there is sand-proof ability in prior art, do not possessing antijamming capability and the defect such as intelligence degree is low.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose a kind of range-adjustable intelligence Wind sand electricity measuring system based on shielding probe, with realize sand-proof ability strong, lateral electric fields and the high advantage of intelligence degree can be shielded.
For achieving the above object, the technical solution used in the present invention is: a kind of range-adjustable intelligence Wind sand electricity measuring system based on shielding probe, comprise and contacting with Wind sand electricity, and the shielding probe for gathering Wind sand electricity on-site signal, be connected with described shielding probe signal, and for carrying out the front-end processing unit of primary treatment to the on-site signal carrying out self-shileding probe, be connected with described front-end processing unit, and for carrying out the back-end processing unit of overall treatment under the working method of Non-follow control or control automatically to the primary treatment result from front-end processing unit, and be connected with described back-end processing unit, and for the switch unit of switch operating mode.
Further, described front-end processing unit, comprises the elementary filter and amplification module be connected between described shielding probe and back-end processing unit.
Further, when working method is Non-follow control, described back-end processing unit comprises the rear end filtration module with described elementary filter and amplification model calling, the analog switch module connected successively, sampling keep and peak detection block, A/D module, main control module and the client for sending user instruction, and parallel join holds 1 to the N range amplification module between filtration module and analog switch module in the rear; Described main control module also with analog switch model calling, be bi-directionally connected between client and main control module; N is natural number.
Further, described client comprises computing machine, or the handheld terminal that can communicate with main control module.
Further, described main control module comprises single-chip microcomputer, and towards the interface module of external user.
Further, when working method is for automatically controlling, described back-end processing unit comprises the voltage comparator with described elementary filter and amplification model calling, the modulation detection module connected successively and signal processing module, and the 1st channel filtering amplification module of parallel join between described voltage comparator and modulation detection module and the 2nd channel filtering amplification module;
Before the chip select signal of described 1st channel filtering amplification module or the 2nd channel filtering amplification module, be provided with not gate, the 1st channel filtering amplification module is connected with the 2nd channel filtering amplification module, and elementary filter and amplification module is also connected with the 1st channel filtering amplification module.
Further, described signal processing module comprises digital acquisition device (such as, can adopt auspicious rich magnificent RBH-8251 data acquisition unit).
Further, described signal processing module comprise successively with A/D module and the main control module of described modulation detection model calling.
Further, described main control module comprises single-chip microcomputer or computing machine.
Further, described shielding probe comprises the fixing vibrating capacitance probe of protected type outer plate.
The range-adjustable intelligence Wind sand electricity measuring system based on shielding probe of various embodiments of the present invention, contact with Wind sand electricity owing to comprising, and the shielding probe for gathering Wind sand electricity on-site signal, be connected with shielding probe signal, and for carrying out the front-end processing unit of primary treatment to the on-site signal carrying out self-shileding probe, be connected with front-end processing unit, and for carrying out the back-end processing unit of overall treatment under the working method of Non-follow control or control automatically to the primary treatment result from front-end processing unit, and be connected with back-end processing unit, and for the switch unit of switch operating mode, be applicable to the electric field measurement system in same magnitude situation, can automatic range switching then for Intelligent adjustment range passage, when small-range, adopt more high-precision sense channel, after external electrical field sudden change increases, automatically switch to the range amplification channel of larger one-level, realize external electrical field and measure more accurately, thus sand-proof ability in prior art can be overcome, do not possess antijamming capability and the low defect of intelligence degree, with realize sand-proof ability strong, lateral electric fields and the high advantage of intelligence degree can be shielded.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from instructions, or understand by implementing the present invention.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for instructions, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
The principle of work schematic diagram that Fig. 1 is the range-adjustable intelligence Wind sand electricity measuring system that the present invention is based on shielding probe when being MANUAL CONTROL mode;
The principle of work schematic diagram that Fig. 2 is the range-adjustable intelligence Wind sand electricity measuring system that the present invention is based on shielding probe when being automatic control mode.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
embodiment one
According to the embodiment of the present invention, provide a kind of range-adjustable intelligence Wind sand electricity measuring system based on shielding probe.As shown in Figure 1, the present embodiment comprises and to contact with Wind sand electricity and shielding for gathering Wind sand electricity on-site signal is popped one's head in, to be connected with shielding probe signal and for the front-end processing unit carrying out on-site signal that self-shileding pops one's head in and carry out primary treatment, and to be connected with front-end processing unit and back-end processing unit for carrying out overall treatment under the working method of Non-follow control to the primary treatment result from front-end processing unit.
Above-mentioned front-end processing unit, comprises the elementary filter and amplification module be connected between shielding probe and back-end processing unit; This shielding probe comprises the fixing vibrating capacitance probe of protected type outer plate.
Above-mentioned back-end processing unit comprises the rear end filtration module with elementary filter and amplification model calling, the analog switch module connected successively, sampling keep and peak detection block, A/D module, main control module and the client for sending user instruction, and 1 to the N range amplification module of parallel join between rear end filtration module and analog switch module; Main control module also with analog switch model calling, be bi-directionally connected between client and main control module; N is natural number.This client comprises computing machine, or the handheld terminal that can communicate with main control module; Main control module comprises single-chip microcomputer, and towards the interface module of external user.
The range-adjustable intelligence Wind sand electricity measuring system based on shielding probe of Fig. 1 display is a kind of manual multirange Wind sand electricity measuring system.In this range-adjustable intelligence Wind sand electricity measuring system based on shielding probe, signal flows to: the induced signal of vibrating capacitance probe sensing chip, by the elementary filter and amplification module of vibrating capacitance probe front end, enter rear end filtration module, then access N road range amplification module, this N road range amplification module is connected into again analog switch module.The signal that analog switch module exports, enters sampling maintenance and the peak detection block of rear end, after be digital signal through A/D module converts, enter single-chip microcomputer and carry out storing and exporting.
In the intelligent Wind sand electricity measuring system of the range-adjustable based on shielding probe of Fig. 1 display, hand range choosing principles is:
In this range-adjustable intelligence Wind sand electricity measuring system based on shielding probe, user according to the needs of oneself, can pass through corresponding software design patterns range passage in single-chip microcomputer.According to user-selected range, the single-chip microcomputer of back-end processing unit is entered by computer input instruction, the CPU OPADD gating signal of single-chip microcomputer is to analog switch module, the road range amplification module that then gating signal is corresponding is connected, front end signal is by the range amplification module by gating, enter sampling maintenance and the peak detection block of rear end, be after digital signal through A/D module converts, input single-chip microcomputer carries out further classified storage, then outputs to client (as computing machine) for user's usage data.
embodiment two
According to the embodiment of the present invention, provide a kind of range-adjustable intelligence Wind sand electricity measuring system based on shielding probe.As shown in Figure 2, the present embodiment comprises and to contact with Wind sand electricity and shielding for gathering Wind sand electricity on-site signal is popped one's head in, to be connected with shielding probe signal and for the front-end processing unit carrying out on-site signal that self-shileding pops one's head in and carry out primary treatment, and to be connected with front-end processing unit and back-end processing unit for carrying out overall treatment under the automatic working method controlled to the primary treatment result from front-end processing unit.Here, front-end processing unit, comprises the elementary filter and amplification module be connected between shielding probe and back-end processing unit; Shielding probe comprises the fixing vibrating capacitance probe of protected type outer plate.
Above-mentioned back-end processing unit comprises the voltage comparator with elementary filter and amplification model calling, the modulation detection module connected successively and signal processing module, and the 1st channel filtering amplification module of parallel join between voltage comparator and modulation detection module and the 2nd channel filtering amplification module; Before the chip select signal of the 1st channel filtering amplification module or the 2nd channel filtering amplification module, be provided with not gate, the 1st channel filtering amplification module is connected with the 2nd channel filtering amplification module, and elementary filter and amplification module is also connected with the 1st channel filtering amplification module.This signal processing module comprises digital acquisition device; Or, this signal processing module comprise successively with A/D module and the main control module of modulation detection model calling.Main control module comprises single-chip microcomputer or computing machine.
The range-adjustable intelligence Wind sand electricity measuring system based on shielding probe of Fig. 1 display is a kind of automatic range switching Wind sand electricity measuring system.In this range-adjustable intelligence Wind sand electricity measuring system based on shielding probe, signal flows to: the induced signal of vibrating capacitance probe sensing chip, by the elementary filter and amplification module of vibrating capacitance probe front end, enter the voltage comparator of rear end, by with the comparing of reference voltage, judge the scope residing for front end signal, by the relatively rear outputs level signals of voltage comparator, as the switching signal of the 1st channel filtering amplification module or the 2nd channel filtering amplification module, front end signal is according to corresponding start signal, enter the filter and amplification passage of work, then enter modulation detection module, final feeding digital acquisition device.
In the intelligent Wind sand electricity measuring system of the range-adjustable based on shielding probe of Fig. 1 display, automatic range switching principle is:
(1), in back-end processing unit, the start signal of to be still the start signal of the 1st channel filtering amplification module be the 0,2nd channel filtering amplification module is all 0.Not gate (arrange not gate before changing the 1st channel filtering amplification module into, principle is also identical) was set before the chip select signal of the 2nd channel filtering amplification module.
(2) after the vibrating capacitance probe of front end senses external electric field, the induced signal of an alternation can be produced, after the pre-filtering amplifying circuit of front end, enter voltage comparator.Voltage comparator reference voltage is set to b, if front end input signal a<b, then voltage comparator output low level, the 1st channel filtering amplification module (small-range passage) opens work, and the 1st channel filtering amplification module that signal enters small-range carries out filter and amplification.If front end input signal a >=b, so voltage comparator exports high level signal, and the 1st channel filtering amplification module of small-range is closed and quit work, and the 2nd channel filtering amplification module unlatching work of wide range.The primary signal of input rear end, front end, enters the filter and amplification module of wide range passage.
(3) final, no matter which passage to complete the signal of filter and amplification at, finally all enter last modulation detection module, then send into digital acquisition device.Be transformed to after digital signal through digital acquisition device, send into computer terminal and carry out data processing.
embodiment three
According to the embodiment of the present invention, provide a kind of range-adjustable intelligence Wind sand electricity measuring system based on shielding probe.As illustrated in fig. 1 and 2, the present embodiment comprises and to contact with Wind sand electricity and shielding for gathering Wind sand electricity on-site signal is popped one's head in, to be connected with shielding probe signal and for the front-end processing unit carrying out on-site signal that self-shileding pops one's head in and carry out primary treatment, be connected with front-end processing unit and back-end processing unit for carrying out overall treatment under Non-follow control or the working method that automatically controls to the primary treatment result from front-end processing unit, and be connected with back-end processing unit and for the switch unit of switch operating mode.This front-end processing unit, comprises the elementary filter and amplification module be connected between shielding probe and back-end processing unit; Shielding probe comprises the fixing vibrating capacitance probe of protected type outer plate.
When working method is Non-follow control, above-mentioned back-end processing unit comprises the rear end filtration module with elementary filter and amplification model calling, the analog switch module connected successively, sampling keep and peak detection block, A/D module, main control module and the client for sending user instruction, and 1 to the N range amplification module of parallel join between rear end filtration module and analog switch module; Main control module also with analog switch model calling, be bi-directionally connected between client and main control module; N is natural number.This client comprises computing machine, or the handheld terminal that can communicate with main control module; Main control module comprises single-chip microcomputer, and towards the interface module of external user.
When working method is for automatically controlling, above-mentioned back-end processing unit comprises the voltage comparator with elementary filter and amplification model calling, the modulation detection module connected successively and signal processing module, and the 1st channel filtering amplification module of parallel join between voltage comparator and modulation detection module and the 2nd channel filtering amplification module; Before the chip select signal of the 1st channel filtering amplification module or the 2nd channel filtering amplification module, be provided with not gate, the 1st channel filtering amplification module is connected with the 2nd channel filtering amplification module, and elementary filter and amplification module is also connected with the 1st channel filtering amplification module.This signal processing module comprises digital acquisition device; Or, this signal processing module comprise successively with A/D module and the main control module of modulation detection model calling.This main control module comprises single-chip microcomputer or computing machine.
In sum, the range-adjustable intelligence Wind sand electricity measuring system based on shielding probe of various embodiments of the present invention, in view of the singularity such as large electric field value, large impact power of Wind sand electricity.Be provided with a kind of electric field measurement system of tackling in different magnitude situation, wherein hand range switching mode can arrange range passage by user at computer port; Automatic range switching mode, then for Intelligent adjustment range passage, when small-range, adopts more high-precision sense channel, after external electrical field sudden change increases, automatically switches to the range amplification channel of larger one-level, realizes external electrical field and measure more accurately; The vibrating capacitance probe that should adopt based on the range-adjustable intelligence Wind sand electricity measuring system of shielding probe, is based on the fixing vibrating capacitance probe of protected type outer plate, has sand-proof, the function of shielding lateral electric fields; Back-end processing unit have employed the CPU process of single-chip microcomputer, achieves intelligent measuring.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the range-adjustable intelligence Wind sand electricity measuring system based on shielding probe, it is characterized in that, comprise and contacting with Wind sand electricity, and the shielding probe for gathering Wind sand electricity on-site signal, be connected with described shielding probe signal, and for carrying out the front-end processing unit of primary treatment to the on-site signal carrying out self-shileding probe, be connected with described front-end processing unit, and for carrying out the back-end processing unit of overall treatment under the working method of Non-follow control or control automatically to the primary treatment result from front-end processing unit, and be connected with described back-end processing unit, and for the switch unit of switch operating mode,
Described front-end processing unit, comprises the elementary filter and amplification module be connected between described shielding probe and back-end processing unit;
When working method is Non-follow control, described back-end processing unit comprises the rear end filtration module with described elementary filter and amplification model calling, the analog switch module connected successively, sampling keep and peak detection block, A/D module, main control module and the client for sending user instruction, and parallel join holds 1 to the N range amplification module between filtration module and analog switch module in the rear; Described main control module also with analog switch model calling, be bi-directionally connected between client and main control module; N is natural number;
Described client comprises computing machine, or the handheld terminal that can communicate with main control module;
Described main control module comprises single-chip microcomputer, and towards the interface module of external user.
2. the range-adjustable intelligence Wind sand electricity measuring system based on shielding probe according to claim 1, it is characterized in that, when working method is for automatically controlling, described back-end processing unit comprises the voltage comparator with described elementary filter and amplification model calling, the modulation detection module connected successively and signal processing module, and the 1st channel filtering amplification module of parallel join between described voltage comparator and modulation detection module and the 2nd channel filtering amplification module;
Before the chip select signal of described 1st channel filtering amplification module or the 2nd channel filtering amplification module, be provided with not gate, the 1st channel filtering amplification module is connected with the 2nd channel filtering amplification module, and elementary filter and amplification module is also connected with the 1st channel filtering amplification module.
3. the range-adjustable intelligence Wind sand electricity measuring system based on shielding probe according to claim 2, it is characterized in that, described signal processing module comprises digital acquisition device.
4. the range-adjustable intelligence Wind sand electricity measuring system based on shielding probe according to claim 2, is characterized in that, described signal processing module comprise successively with A/D module and the main control module of described modulation detection model calling.
5. the range-adjustable intelligence Wind sand electricity measuring system based on shielding probe according to claim 4, it is characterized in that, described main control module comprises single-chip microcomputer or computing machine.
6. the range-adjustable intelligence Wind sand electricity measuring system based on shielding probe according to claim 1, it is characterized in that, described shielding probe comprises the fixing vibrating capacitance probe of protected type outer plate.
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| CN109444759A (en) * | 2018-12-21 | 2019-03-08 | 成都前锋电子仪器有限责任公司 | A kind of accumulator internal resistance measuring system |
| CN111693134A (en) * | 2020-06-19 | 2020-09-22 | 哈尔滨工业大学 | Vibration signal wireless sensing system with variable measuring range |
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