CN209542698U

CN209542698U - A kind of multi-channel DC voltage and current collector of high-speed, high precision

Info

Publication number: CN209542698U
Application number: CN201920038413.7U
Authority: CN
Inventors: 汤智育
Original assignee: Shenzhen Zhongchuang Zhihe Technology Co Ltd
Current assignee: Shenzhen Zhongchuang Zhihe Technology Co Ltd
Priority date: 2019-01-10
Filing date: 2019-01-10
Publication date: 2019-10-25
Anticipated expiration: 2029-01-10

Abstract

The utility model discloses a kind of multi-channel DC voltage and current collectors of high-speed, high precision, comprising: at least one set of Current Voltage acquisition module；The Current Voltage acquisition module includes voltage sampling module, current sampling module, A/D chip；The A/D chip is 4 AD of two-channel 2-4, and the data calculating cycle in A/D chip is set dynamically；The voltage sampling module, current sampling module are connected in parallel in A/D chip；The collector is high using 24 A/D chip measurement accuracy, amplifies the Measurement Resolution that five a ten thousandths can be achieved by dynamic regulation gain, and alternative high-precision voltage and current power meter realizes the function of more table synchronized samplings measurement；And it can be realized 2 grades of measuring ranges switching of measured signal；Electrical isolation between channel improves the anti-interference of multichannel while measurement, avoids the crosstalk between channel；The AC/DC universal acquisition measurement of signal may be implemented.

Description

A kind of multi-channel DC voltage and current collector of high-speed, high precision

Technical field

The utility model relates to electric power acquisition fields, more particularly to a kind of multi-channel DC voltage electricity of high-speed, high precision Flow collector.

Background technique

In production automation detection field with the rise of artificial intelligence, artificial detection means is substituted with machine and is also exhaled And go out, since robotic production detection is high-efficient with regard to needing to detect, in addition to secondly the speed of machine part is exactly front end Signal picker, existing market product acquisition multichannel speed is slower, mostly uses repeating query to acquire, causes sample rate slow, do not have Realize that sampling is same；Existing product multichannel measurement is mode altogether, does not have electrical isolation, poor anti jamming capability between channel；No 2 grades of handoff functionalities of range are able to achieve, measurement accuracy is not high, and linear dynamic range is optimal to can only achieve one thousandth, no It is able to achieve 1/5th linear dynamic range；It is unable to satisfy the requirement of multi-channel high-speed measurement.

Utility model content

The utility model discloses a kind of multi-channel DC voltage and current collector of high-speed, high precision, each channel circuits The synchronized sampling of multi-channel signal acquiring is realized in modularized design；Using 5 times of gain enlarging functions of A/D chip, realize tested 2 grades of measuring ranges of signal switch, and the data calculating cycle in A/D chip is set dynamically, and realize synchronized sampling number According to the setting of renewal time；The collector realizes the multi-channel DC voltage and current acquisition of high-speed, high precision；And the collector It is provided with isolated location, realizes signal isolation electrically, prevents the electrical signal data of acquisition impacted.

The utility model achieves the above object through the following technical schemes:

A kind of multi-channel DC voltage and current collector of high-speed, high precision, comprising: at least one set of Current Voltage acquires mould Block；The Current Voltage acquisition module includes voltage sampling module, current sampling module, A/D chip；The A/D chip is bilateral 24, road AD, the data calculating cycle in A/D chip are set dynamically；The voltage sampling module, current sampling module are adopted A/D chip is accessed with the mode of total common end；So set, realizing measured signal using 5 times of gain enlarging functions of A/D chip 2 grades of measuring ranges switching, can wide scope measurement；And the data calculating cycle in A/D chip is set dynamically, and is realized The setting of synchronously sampled data renewal time；One channel collection voltages, a channel acquire electric current, voltage and electric current using altogether The mode of common end reduces the wiring of electric current, after measured voltage signal uses electric resistance partial pressure mode, through differential type RC filter circuit Into the port chip AD.

Preferably, the Current Voltage acquisition module further includes filter circuit, isolated location；The voltage sampling module, Current sampling module accesses filter circuit by the way of common end altogether；The filter circuit is believed respectively with current signal and voltage Number it is connected to A/D chip；The A/D chip is electrically connected to isolated location；It can be by the electricity of acquisition so set, lockking filter circuit Stream, voltage are filtered, and A/D chip is made to obtain more clear signal；The isolated location realizes signal electrically Isolation prevents other impacted pass effects of electrical signal data of acquisition.

It preferably, further include MCU processor, communication module, power module, storage module；The MCU processor electrical connection In Current Voltage acquisition module；The power module is electrically connected to MCU processor and Current Voltage acquisition module；At the MCU Reason device is electrically connected to communication module；The storage module is connected to MCU processor；So set, the voltage and current of acquisition is believed It is exported after number calculation processing.

Preferably, the voltage sampling module includes divider resistance, voltage sampling resistor；The divider resistance, voltage take Sample resistor coupled in parallel is connected to filter circuit；So set, measured voltage signal uses electric resistance partial pressure mode.

Preferably, the current sampling module includes current sampling resistor, and the current sampling resistor is low using high-precision The resistance alloys of temperature drift guarantees circuit not by temperature caused by generating heat when high current so set, resistance temperature drift is less than 25ppm Drift effect.

Preferably, the isolated location includes isolated power supply and isolating chip, so set, isolated power supply realization is defeated Enter the isolation of output end power supply, the isolating chip carries out the electrical isolation of communicating circuit.

Preferably, it includes being not limited to ADUM1411 magnetic coupling isolating chip that the isolating chip, which uses, so set, realizing It is measured being isolated between end and internal governor circuit and channel, reduces the mutual crosstalk between signal.

Preferably, it includes being not limited to CS5550 or CS5463 chip that the A/D chip, which uses, so set, the AD core Piece is equipped with 4 AD of two-channel 2-4, guarantees the synchronized sampling of interchannel.

The utility model beneficial effect achieved is: a kind of multi-channel DC voltage and current acquisition of high-speed, high precision Device, it is high using 24 A/D chip measurement accuracy, amplify the Measurement Resolution that five a ten thousandths can be achieved by dynamic regulation gain, Alternative high-precision voltage and current power meter realizes the function of more table synchronized samplings measurement；And it can be realized measured signal 2 grades of measuring range switchings；Electrical isolation between channel improve multichannel and meanwhile measurement anti-interference, avoid channel it Between crosstalk；The AC/DC universal acquisition measurement of signal may be implemented.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property Under, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the circuit signal of the multi-channel DC voltage and current collector of described in the utility model kind of high-speed, high precision Figure；

The reference numerals are as follows:

1, Current Voltage acquisition module；2, MCU processor；3, communication module；4, power module；5, storage module；11, electric Press sampling module；12, current sampling module；13, A/D chip；14, filter circuit；15, isolated location；111, divider resistance； 112, voltage sampling resistor；151 isolated power supplies；152, isolating chip.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawing:

Implementation column 1

As shown in figure, the multi-channel DC voltage and current collector of a kind of high-speed, high precision, including 24 groups of Current Voltages Acquisition module 1, MCU processor 2, communication module 3, power module 4, storage module 5；24 groups of Current Voltage acquisition modules 1 are in parallel It is electrically connected to MCU processor 2；Described 4 one end of power module is connected to power input, one end be electrically connected to MCU processor 2 and The isolated location 15 of Current Voltage acquisition module 1；The MCU processor 2 is electrically connected to communication module 3；The storage module 5 connects It is connected to MCU processor 2.

The Current Voltage acquisition module 1 includes voltage sampling module 11, current sampling module 12, A/D chip 13, filtering Circuit 14, isolated location 15；The 11 collection voltages information of voltage sampling module；The current sampling module 12 acquires electric current letter Breath；The voltage sampling module 11, current sampling module 12 access filter circuit 14 by the way of common end altogether；The filtering Circuit 14 is connected to A/D chip 13 respectively with current signal and voltage signal；The A/D chip 13 is electrically connected in isolated location 15 isolated power supply 151 and isolating chip 152；

The A/D chip 13 uses CS5550 chip

The voltage sampling module 11 includes divider resistance 111, voltage sampling resistor 112；The divider resistance 111, electricity Pressure sample resistance 112 is connected in parallel in filter circuit 14.

Implementation column 2

Embodiment 2 the difference from embodiment 1 is that: the collector be arranged 10 groups of Current Voltage acquisition modules 1, described 10 groups Current Voltage acquisition module 1 is electrically connected in parallel to MCU processor 2；The A/D chip 13 uses CS5463 chip.

The basic principles and main features and advantage of the utility model have been shown and described above.The technical staff of the industry It should be appreciated that the present utility model is not limited to the above embodiments, the above embodiments and description only describe this The principle of utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various change And improvement, these various changes and improvements fall within the scope of the claimed invention.

Claims

1. a kind of multi-channel DC voltage and current collector of high-speed, high precision characterized by comprising at least one set of electric current electricity Press acquisition module；The Current Voltage acquisition module includes voltage sampling module, current sampling module, A/D chip；The AD core Piece is 4 AD of two-channel 2-4；The voltage sampling module, current sampling module access A/D chip by the way of common end altogether.

2. a kind of multi-channel DC voltage and current collector of high-speed, high precision according to claim 1, which is characterized in that The Current Voltage acquisition module further includes filter circuit, isolated location；The voltage sampling module, current sampling module use The mode of common end accesses filter circuit altogether；The filter circuit is connected to A/D chip respectively with current signal and voltage signal； The A/D chip is electrically connected to isolated location.

3. a kind of multi-channel DC voltage and current collector of high-speed, high precision according to claim 1, which is characterized in that It further include MCU processor, communication module, power module, storage module；The MCU processor is electrically connected to Current Voltage acquisition Module；The power module is electrically connected to MCU processor and Current Voltage acquisition module；The MCU processor is electrically connected to logical Interrogate module；The storage module is connected to MCU processor.

4. a kind of multi-channel DC voltage and current collector of high-speed, high precision according to claim 1, which is characterized in that The voltage sampling module includes divider resistance, voltage sampling resistor；The divider resistance, voltage sampling resistor are connected in parallel in Filter circuit.

5. a kind of multi-channel DC voltage and current collector of high-speed, high precision according to claim 1, which is characterized in that The current sampling module includes current sampling resistor, and the current sampling resistor uses the resistance alloys of High Precision Low Temperature drift.

6. a kind of multi-channel DC voltage and current collector of high-speed, high precision according to claim 2, which is characterized in that The isolated location includes isolated power supply and isolating chip.

7. a kind of multi-channel DC voltage and current collector of high-speed, high precision according to claim 6, which is characterized in that It includes being not limited to ADUM1411 magnetic coupling isolating chip that the isolating chip, which uses,.

8. a kind of multi-channel DC voltage and current collector of high-speed, high precision according to claim 1, which is characterized in that It includes being not limited to CS5550 or CS5463 that the A/D chip, which uses,.