CN203117697U

CN203117697U - Current monitoring module

Info

Publication number: CN203117697U
Application number: CN 201320051292
Authority: CN
Inventors: 唐松继
Original assignee: GUILIN WINDCON CO Ltd
Current assignee: GUILIN WINDCON CO Ltd
Priority date: 2013-01-30
Filing date: 2013-01-30
Publication date: 2013-08-07
Anticipated expiration: 2023-01-30

Abstract

The utility model relates to a current monitoring module comprising a current sampling unit, a signal amplification unit, an analog-digital conversion unit, and a single-chip microcomputer control unit, which are sequentially connected together. The current sampling unit can be used to acquire an external current to be measured, and the signal amplification unit can be used for amplification of the sampling current. The analog-digital conversion unit can be used to convert an amplified analog signal into a digital signal, which can be transmitted to the single-chip microcomputer control unit for processing and control. The current monitoring module has advantages of small size, less material consumption, high efficiency, low carbon, and environmental protection.

Description

A kind of current monitoring module

Technical field

The utility model relates to the surveying instrument technical field, especially relates to a kind of current monitoring module.

Background technology

In wind power system, need carry out precision measurement and control to the electric current in accumulator cell charging and discharging loop, traditional current detecting equipment generally uses sampling devices such as Hall element, current transformer, shunt, there is function singleness, measuring accuracy is not high relatively, equipment volume is big, is difficult for the shortcoming of installing.

The utility model content

A kind of current monitoring module, comprise: the current sampling unit that is linked in sequence, signal amplification unit, A/D converter and Single-chip Controlling unit, described current sampling unit is used for gathering outside electric current to be measured, signal amplification unit is used for sample rate current is amplified, A/D converter is used for converting amplified analog signal to digital signal, sends into the Single-chip Controlling unit then and handles and control.

Further, as preferred version, between described current sampling unit and signal amplification unit, also be connected to the photoelectricity isolated location, be used for carrying out signal and isolate.

Further, as preferred version, also comprise the charactron display unit that links to each other with the Single-chip Controlling unit, be used for the display monitoring state.

Further, as preferred version, also comprise the relay switch unit that links to each other with the Single-chip Controlling unit, described relay switch unit is controlled according to monitoring current by the Single-chip Controlling unit.

Further, as preferred version, the resistance that described current sampling unit employing high precision, low temperature float is as sampling element.

Low temperature floats the utility model, high-precision sampling resistor by adopting, in conjunction with the light-coupled isolation technology, utilize single-chip microcomputer and AD sampling processing, reached accurately measure (measuring accuracy reaches 0.001A) to electric current, reduced equipment volume and weight simultaneously, be convenient to install.

Description of drawings

Fig. 1 is a kind of current monitoring module frame chart.

Embodiment

Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for explanation the utility model, but are not used for limiting scope of the present utility model.

As shown in Figure 1, a kind of current monitoring module, comprise: the current sampling unit 1 that is linked in sequence, signal amplification unit 2, A/D converter 3 and Single-chip Controlling unit 4, described current sampling unit 1 is used for gathering outside electric current to be measured, signal amplification unit 2 is used for sample rate current is amplified, A/D converter 3 is used for converting amplified analog signal to digital signal, sends into Single-chip Controlling unit 4 then and handles and control.Between described current sampling unit 1 and signal amplification unit 2, also be connected to photoelectricity isolated location (not shown), be used for carrying out signal and isolate.Can also comprise the charactron display unit (not shown) that links to each other with Single-chip Controlling unit 4, be used for the display monitoring state.Can also comprise the relay switch unit (not shown) that links to each other with Single-chip Controlling unit 4, described relay switch unit is controlled according to monitoring current by Single-chip Controlling unit 4.The resistance that described current sampling unit 1 employing high precision, low temperature float is as sampling element.

Embodiment:

Current circuit to be measured is after inserting, the signal of sampling by resistance, input optocoupler HCPL-7800 isolates, behind linear the amplification, after doing the AD processing, ADS110AOIDBVT transports to single-chip microcomputer, after single-chip microcomputer carries out calculation process to data, show the real-time current obtain circuit under test by charactron, the switch motion of the current parameters pilot relay HRAH-S-DC5V that arranges according to the user.

The above only is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.

Claims

1. current monitoring module, it is characterized in that, comprise: the current sampling unit that is linked in sequence, signal amplification unit, A/D converter and Single-chip Controlling unit, described current sampling unit is used for gathering outside electric current to be measured, signal amplification unit is used for sample rate current is amplified, A/D converter is used for converting amplified analog signal to digital signal, sends into the Single-chip Controlling unit then and handles and control.

2. according to the described current monitoring module of claim 1, it is characterized in that: between described current sampling unit and signal amplification unit, also be connected to the photoelectricity isolated location, be used for carrying out signal and isolate.

3. according to the described current monitoring module of claim 1, it is characterized in that: also comprise the charactron display unit that links to each other with the Single-chip Controlling unit, be used for the display monitoring state.

4. according to the described current monitoring module of claim 1, it is characterized in that: also comprise the relay switch unit that links to each other with the Single-chip Controlling unit, described relay switch unit is controlled according to monitoring current by the Single-chip Controlling unit.

5. according to any described current monitoring module of claim 1 to 4, it is characterized in that: described current sampling unit adopts resistance as sampling element.