CN213600803U

CN213600803U - Data acquisition device with expandable channel number

Info

Publication number: CN213600803U
Application number: CN202022620744.7U
Authority: CN
Inventors: 吴平
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-07-02
Anticipated expiration: 2030-11-12

Abstract

The utility model provides a passageway quantity extensible data acquisition device, include: the system comprises a plurality of data acquisition channel groups, a signal acquisition unit and a signal processing unit, wherein each data acquisition channel group comprises a plurality of data acquisition channels, and the data acquisition channels are used for acquiring data of a signal to be detected; the controller is connected with the data acquisition channel group and used for controlling the starting of the data acquisition channels in the data acquisition channel group; and the synchronizing devices are respectively electrically connected with the controllers and used for enabling the controllers to synchronously run so as to enable the data acquisition channels to synchronously acquire the data of the signals to be detected. The utility model discloses the advantage is, realize the synchronous operation of a plurality of controllers through synchronizer, and then realize the synchronous collection of a plurality of data acquisition passageways, can expand data acquisition passageway quantity according to using the scene, realize a plurality of signals synchronous acquisition that await measuring, improved data acquisition device's efficiency greatly, satisfied people's demand.

Description

Data acquisition device with expandable channel number

Technical Field

The utility model relates to an electronic test field especially relates to a passageway quantity extensible data acquisition device.

Background

Data acquisition refers to automatically acquiring electric quantity signals from equipment such as a testing device and the like so as to perform operations such as analysis and the like. Data acquisition is typically performed by a data acquisition device. The number of channels of the existing data acquisition device is limited, data acquisition can be carried out on signals to be detected of corresponding number at most simultaneously, once the number of the signals to be detected is increased, the number of the channels is limited, synchronous acquisition of the signals to be detected cannot be achieved, and the use requirements of people cannot be well met.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a passageway quantity extensible data acquisition device is provided, it can be according to the scene requirement and extension passageway quantity, realizes a plurality of synchronous collections of signal that await measuring, has improved data acquisition device's efficiency greatly, can satisfy people's demand.

In order to solve the above problem, the utility model provides a passageway quantity extensible data acquisition device, include: the system comprises a plurality of data acquisition channel groups, a signal acquisition unit and a signal processing unit, wherein each data acquisition channel group comprises a plurality of data acquisition channels, and the data acquisition channels are used for acquiring data of a signal to be detected; the controller is connected with the data acquisition channel group and used for controlling the starting of the data acquisition channels in the data acquisition channel group; and the synchronizing devices are respectively electrically connected with the controllers and used for enabling the controllers to synchronously run so as to enable the data acquisition channels to synchronously acquire the data of the signals to be detected.

Optionally, the data acquisition channel includes an acquisition end and a control end, the acquisition end is used for performing data acquisition on the signal to be detected, and the control end is connected with the controller.

Optionally, the acquisition end acquires data of the signal to be detected through a data acquisition line.

Optionally, the control terminal is connected to the controller through a connection line.

Optionally, each of the data acquisition channel groups includes eight data acquisition channels.

Optionally, the controller includes a plurality of switches, and each switch corresponds to one of the data acquisition channels and is configured to control the start of the data acquisition channel.

Optionally, the synchronization device is a clock synchronization device.

Optionally, the data acquisition device further includes a pluggable storage device, and the pluggable storage device is configured to store the data acquired by the data acquisition channel.

Optionally, a definable parallel data interface is disposed on the data acquisition channel, and the pluggable storage device can be plugged into the definable parallel data interface to realize connection with the data acquisition channel.

The utility model has the advantages of, realize the synchronous operation of a plurality of controllers through synchronizer, and then realize the synchronous collection of a plurality of data acquisition passageways, can require and expand data acquisition passageway quantity according to the applied scene, realize a plurality of signals synchronous acquisition that await measuring, improved data acquisition device's efficiency greatly, satisfied people's demand.

Drawings

Fig. 1 is a schematic structural diagram of a data acquisition device with an expandable number of channels according to an embodiment of the present invention.

Detailed Description

The following describes in detail a specific embodiment of the data acquisition device with an expandable number of channels according to the present invention with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a data acquisition device with an expandable number of channels according to an embodiment of the present invention. Referring to fig. 1, the data acquisition device with an expandable channel number of the present invention includes a plurality of data acquisition channel groups 10, a plurality of controllers 11, and a synchronization device 12.

Each data acquisition channel group 10 includes a plurality of data acquisition channels 101, and the data acquisition channels 101 are used for acquiring data of a signal to be tested DUT. In the present embodiment, each of the data acquisition channel groups 10 includes eight data acquisition channels 101. In other embodiments of the present invention, each of the data acquisition channel groups 10 may include six or other number of data acquisition channels 101, which is not limited herein.

A controller 11 is connected to one of the data acquisition channel groups 10, and is configured to control the start of the data acquisition channels 101 in the data acquisition channel group 10. That is, the plurality of data acquisition channels 101 of the same data acquisition channel group 10 are all connected to the same controller 11. Each controller 11 can control the corresponding data acquisition channels 101 to start up simultaneously, and can also control the data acquisition channels 101 to start up respectively.

The data acquisition channels 101 in the same data acquisition channel group 10 can synchronously acquire data of the signal to be detected under the control of the same controller 11, and different data acquisition channel groups 10 are connected with different controllers 11, so that synchronous acquisition cannot be realized. Therefore, the utility model discloses data acquisition device has set up synchronizer 12, synchronizer 12 respectively with 11 electricity of controller are connected, are used for making a plurality of 11 synchronous operation of controller, and then make a plurality of data acquisition channel 101 can be synchronous right the signal to be measured carries out data acquisition. That is to say, the synchronization device 12 controls the plurality of data acquisition channels 101 corresponding to the controller 11 to synchronously acquire data of the signal to be measured. The utility model provides two methods for realizing the synchronizer 12, wherein, one is that, under the premise that the controller 11 and the data acquisition channel 101 are not powered off, the synchronization is realized in a chip reset mode, and the data is automatically acquired after reset; alternatively, when the controller 11 and the data acquisition channel 101 are powered on for automatic data acquisition, the power supply modes of the controller 11 and the data acquisition channel 101 are synchronized.

Further, the synchronization device 12 may be a clock synchronization device. The synchronous mode can be divided into in-phase synchronization and out-of-phase synchronization, and the phase control can be generated by a rising edge, a falling edge, a high level, a low level or a multi-clock phase difference or a phase difference mode in a clock period.

For different application scenarios, the number of data acquisition channels that need to be used is different, and then the number of the data acquisition channels 101 corresponding to the controller 11 can be increased or decreased by increasing or decreasing the number of the controller 11, and the synchronization acquisition of the plurality of data acquisition channels 101 is realized through the synchronization device 12. The utility model discloses data acquisition device expands the data acquisition passageway according to using the scene, can satisfy people's demand.

Further, in this embodiment, the data acquisition channel 101 includes an acquisition end 101A and a control end 101B, the acquisition end 101A is connected to the signal to be detected and is configured to perform data acquisition on the signal to be detected, and the control end 101B is connected to the controller 11 and is configured to receive the control signal of the controller 11. Further, the acquisition end 101A performs data acquisition on the signal to be detected through a data acquisition line. The control terminal 101B is connected to the controller 11 through a connection line.

Further, in this embodiment, the controller 11 includes a plurality of switches 110, and each switch 110 corresponds to one of the data acquisition channels 101, and is configured to control the start of the data acquisition channel. Specifically, when the switch 110 is turned on, the corresponding data acquisition channel 101 is turned on, and when the switch 110 is turned off, the corresponding data acquisition channel 101 is turned off.

Further, the data acquisition device further comprises a pluggable storage device 13, and the pluggable storage device 13 is used for storing the data acquired by the data acquisition channel 101. Specifically, each data acquisition channel is connected to a pluggable storage device 13, and the pluggable storage device 13 is configured to acquire data of the data acquisition channel. The pluggable storage device 13 can be separated from the data acquisition channel 101, so that data can be imported into other devices for processing, and the flexibility of data processing is improved.

Further, the pluggable device 13 includes, but is not limited to, a usb flash disk. A definable parallel data interface (not shown) is disposed on the data acquisition channel 101, and the pluggable storage device 13 can be plugged into the definable parallel data interface to connect with the data acquisition channel 101.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A data acquisition device with an expandable number of channels is characterized by comprising:

the system comprises a plurality of data acquisition channel groups, a signal acquisition unit and a signal processing unit, wherein each data acquisition channel group comprises a plurality of data acquisition channels, and the data acquisition channels are used for acquiring data of a signal to be detected;

the controller is connected with the data acquisition channel group and used for controlling the starting of the data acquisition channels in the data acquisition channel group;

and the synchronizing devices are respectively electrically connected with the controllers and used for enabling the controllers to synchronously run so as to enable the data acquisition channels to synchronously acquire the data of the signals to be detected.

2. The data acquisition device as claimed in claim 1, wherein the data acquisition channel comprises an acquisition end and a control end, the acquisition end is used for data acquisition of the signal to be detected, and the control end is connected with the controller.

3. The data acquisition device as claimed in claim 2, wherein the acquisition end performs data acquisition on the signal to be detected through a data acquisition line.

4. The data acquisition device of claim 2, wherein the control terminal is connected to the controller by a connecting wire.

5. The data acquisition device of claim 1 wherein each of the data acquisition channel groups comprises eight data acquisition channels.

6. The data acquisition device as claimed in claim 1, wherein the controller comprises a plurality of switches, each switch corresponding to one of the data acquisition channels for controlling the activation of the data acquisition channel.

7. The data acquisition device of claim 1, wherein the synchronization device is a clock synchronization device.

8. The data acquisition device of claim 1, further comprising a pluggable memory device for storing data acquired by the data acquisition channel.

9. The data collection device of claim 8, wherein a definable parallel data interface is provided on the data collection channel, the pluggable memory device being insertable into the definable parallel data interface to enable connection to the data collection channel.