CN206387855U - A kind of matrix form direct current formate field intensity detection means - Google Patents

Abstract

Field detection means is synthesized the utility model proposes a kind of matrix form direct current, its detection means includes ten lower computer units, host computer unit, PC.It is characterized in：Lower computer unit is made up of synthesis field sensor, signal processing circuit, ARM, communication module, A/D chip and power module, and device has 10 lower computer units；Host computer unit uses high-performance processor ARM7, is made up of communication module, ARM, touch-screen, button and power module, can receive the channel data of more than 10, passage is expansible；PC such as is used for storing the data of collection, counts, analyzes, showing at a series of activities.The communication module of every lower computer unit realizes communicated that respectively the single-chip microcomputer of host computer is connected with PC with the communication module of host computer unit.

Description

A kind of matrix form direct current formate field intensity detection means

Technical field

The utility model is related to direct current transportation detection field, more particularly to direct current formate field intensity detection means and detection side Method.

Background technology

In recent years, with the fast development of China's electric utility, extra-high voltage direct-current transmission engineering is greatly developed, and direct current is defeated The electromagnetic environment on electric equipment periphery is increasingly paid close attention to by people, and the detection technique to direct solenoid environment is also increasingly becoming electricity Power and the focus of environmental protection industry (epi) research.

Direct current synthesis field is the major electromagnetic ambient parameter of DC power transmission line and current conversion station, as China is to power transmission and transformation work The development of journey Environmental Impact Assessment, the detection to direct current total electric field turns into an important job.DC transmission line The total electric field on road be mainly on wire voltage produce electrostatic field and by wire bloom produce space charge formed from Subflow superposition is produced.The measurement of total electric field is relatively vulnerable to the influence of environment, and domestic for direct current total electric field at present Measurement apparatus be mainly the measurement of a single point position, the change of environment during different Point Measurements is not considered in measurement process, it is surveyed Amount result also fails to be acted upon, only whether exceeded.Therefore design and develop accurate detection means very urgent and necessary.

The content of the invention

The purpose of this utility model is to provide for a kind of measuring apparatus for DC synthesis field of multi-point, can be with using the device Eliminate measurement process in caused by environmental change measurement error.

In order to achieve the above object, the technical solution of the utility model is realized in：

A kind of matrix form direct current formate field intensity detection means, including：Lower computer unit, host computer unit and PC；It is described Lower computer unit be made up of multiple slave computers, every slave computer by synthesize field sensor, signal processor, first communication mould Block, A/D chips, the first single-chip microcomputer and the first power module composition；DC electric field signal is converted to exchange by synthesis field sensor Signal, and AC signal is sent to signal processor, after amplitude amplification and field strength polarity of the signal processor to signal judge Send a signal to A/D chips and the first single-chip microcomputer；A/D chips and the first single-chip microcomputer are handled the signal of collection in real time, Then transferred signals to by wireless signal in host computer, the first power module is respectively A/D chips, the first single-chip microcomputer, One communication module is powered；Described host computer unit is made up of multiple host computers, and every host computer is by second communication module, second Second communication module is received from slave computer in single-chip microcomputer, display screen, operation keyboard and second source module composition, host computer Signal, and second singlechip is sent a signal to, second singlechip will pass through the incoming PC of usb line, PC after data processing Machine is handled measurement data by software；Second source module is respectively that second communication module and second singlechip are powered； Its second communication module is connected by wireless signal with lower computer unit, and PC is connected by usb line with host computer unit.

The electric-field intensity of multiple point positions below lower computer unit one-shot measurement circuit, measures same time, same operation shape Under state, the ground total electric field strength below circuit, the single-chip microcomputer in host computer unit uses high-performance processor ARM7, leads to more Road communication module, while receiving and handling multiple channel datas；

DC electric field signal is converted to AC signal by synthesis field sensor, and signal processing circuit realizes that the amplitude of signal is put Big and field strength polarity judges；Single-chip microcomputer is handled the signal of collection in real time；Host computer unit is by usb line by data Incoming PC, PC parameter is configured by software and measurement data processing.

Matrix form direct current formate field intensity detection method, be specially：

The total electric field strength of multiple measuring points on a cross section is measured simultaneously, it is to avoid because of environmental change or circuit operation shape The change of state and the measurement error produced；

For each measurement point, in minimum measuring section 30min, 100 data are at least recorded.Each measuring point number Sorted according to by order of magnitude, it is maximum to obtain the value that 95% data are no more than；80% value being no more than is 80% value； 50% value being no more than is average value；

By matrix form detection method, it is distributed in circuit matrix form measuring point formed below, it is soft by the Matlab in PC Part is handled measurement data, obtains the characteristic value and indicatrix of total electric field, fits the ground three in a span Tie up total electric field distribution.

Brief description of the drawings

Fig. 1 is the circuit theory diagrams that the utility model direct current synthesizes field detection means

Shown in figure：1. at lower computer unit, 2. host computer units, 3.PC machines, 101. synthesis field sensors, 102. signals Reason device, 103.A/D chips, 104. first power modules, 105. first single-chip microcomputers, 106. first communication modules, 201. second lead to Believe module, 202. second source modules, 203. second singlechips, 204. operation keyboards, 205. liquid crystal displays

Embodiment

To make the technical solution of the utility model and advantage clearer, technical scheme is carried out with reference to example clear Chu, it is fully described by.

Matrix form direct current synthesizes the operation mechanism of field detection means：

Every lower computer unit 1 is by synthesizing field sensor 101, signal processor 102, first communication module 106, A/D cores Piece 103, the first single-chip microcomputer 105 and the first power module 104 are constituted；Host computer unit 2 is single by second communication module 201, second Piece machine 203, liquid crystal display 205, operation keyboard 204 and second source module 202 are constituted, and its communication module 201 passes through wireless communication Number it is connected with lower computer unit 1, PC 3 is connected by usb line with host computer unit 2.

By parameter setting interface arrange parameter on PC, the order for starting detection is assigned.PC will by USB interface Host computer is passed in order, and the communication module of host computer is sent to multiple lower computer units simultaneously by wireless signal starts detection Order；

Lower computer unit starts detection：DC electric field signal is converted to AC signal, signal transacting by synthesis field sensor The amplitude amplification of circuit realiration signal and field strength polarity judge；Single-chip microcomputer is handled the signal of collection in real time, is then passed through Transmission of wireless signals is to host computer；Single-chip microcomputer is by, by the incoming PC of usb line, PC passes through after data processing in host computer Software is handled measurement data.

It is preferred that, matrix form direct current synthesis field detection method：Measuring point should be selected in the flat location of physical features, be away from bar Tower, trees, hedge, top grass or other irregular prominent objects, to avoid the influence of adjacent object.Should be along circuit in measurement Cross section selects multiple measurement points to measure.The measurement of ground formate field intensity use the length of side for 1m ground reference plane, from The measurement of subflow density uses the length of side to be to receive pole plate for 1m square-shaped metal plate, and it is 5cm to be placed on the good height that insulate Support on.The two, which is put, answers parallel and polar conductor direction, and earth plate is consistent with receiver board edge.

It is preferred that, all measuring instruments are measured simultaneously under host computer control, are then successively sent to measurement data Main frame, is shown by main frame and is recorded.The automatic record data of direct current formate field intensity tester, record time interval is chosen as 2s, Can be using other time interval.The each measurement data of each measuring point is no less than 100.Multiple spot is measured simultaneously when, it should use certainly Dynamic recording mode is measured.The sensing head of measuring instrument should keep remote distance (at least wanting 2.5m) enough with survey crew, Avoid producing larger electric field distortion at sensing head；1m should be not less than with the distance of fixed object, to reduce fixed object Influence to measured value.

It is preferred that, data below should be recorded during measurement：Ground formate field intensity measured value, environment temperature, relative humidity, gas Pressure, wind speed, wind direction.Test line or change of current station name, working voltage and polarity, the shaft tower numbering at measurement span two ends, circuit Trend, to return with bar circuit number, line arrangement mode, wire type, polar conductor division number, measurement position pole bus high over the ground Degree, die opening and each time measure at the beginning of between and the end time.

It is preferred that, each measuring point data sorts by order of magnitude, and it is maximum to obtain the value that 95% data are no more than； 80% value being no more than is 80% value；50% value being no more than is average value.Measurement data can be by pre- on each cross section The software formation characteristic value and indicatrix first write.Measured in multiple cross sections, the ground in a span can be obtained Face three-dimensional total electric field distribution trend figure.

The part not illustrated in specification is prior art or common knowledge.It is new that the present embodiment is merely to illustrate the practicality Type, rather than limit scope of the present utility model, equivalent replacement that those skilled in the art are done for the utility model etc. Modification is deemed to fall within the utility model right claim institute protection domain.

Claims (3)

1. a kind of matrix form direct current formate field intensity detection means, it is characterised in that：The device includes lower computer unit (1), upper Machine unit (2) and PC (3)；Described lower computer unit (1) is made up of multiple slave computers, and every slave computer is sensed by synthesizing field Device (101), signal processor (102), first communication module (106), A/D chips (103), the first single-chip microcomputer (105) and first Power module (104) is constituted；DC electric field signal is converted to AC signal by synthesis field sensor (101), and by AC signal Signal processor (102) is sent to, amplitude amplification and field strength polarity of the signal processor (102) to signal send out signal after judging Give A/D chips (103) and the first single-chip microcomputer (105)；A/D chips (103) and the first single-chip microcomputer (105) enter to the signal of collection Row processing in real time, is then transferred signals in host computer, the first power module (104) is respectively A/D cores by wireless signal Piece (103), the first single-chip microcomputer (105), first communication module (106) power supply；Described host computer unit (2) is by multiple host computers Composition, every host computer is by second communication module (201), second singlechip (203), display screen (205), operation keyboard (204) Constituted with second source module (202), second communication module (201) receives the signal from slave computer in host computer, and will letter Number be sent to second singlechip (203), second singlechip (203) by after data processing by the incoming PC of usb line (3), PC is handled measurement data by software；Second source module (202) is respectively second communication module (201) and second Single-chip microcomputer (203) is powered；Its second communication module (201) is connected by wireless signal with lower computer unit (1), and PC (3) leads to Usb line is crossed with host computer unit (2) to be connected.

2. matrix form direct current formate field intensity detection means according to claim 1, it is characterised in that：Constitute the slave computer Multiple measurement point positions below many slave computers difference corresponding line of unit (1), for measuring same operation shape of same time The electric-field intensity (ground total electric field strength) of multiple point positions below circuit under state.

3. matrix form direct current formate field intensity detection means according to claim 1, it is characterised in that：Host computer unit (2) Using high-performance processor ARM7, multichannel communication module, while receiving and handling multiple channel datas.