CN217655170U

CN217655170U - Measurement channel expansion structure

Info

Publication number: CN217655170U
Application number: CN202221139575.8U
Authority: CN
Inventors: 王振宇; 陈恬
Original assignee: Hella Shanghai Electronics Co Ltd
Current assignee: Hella Shanghai Electronics Co Ltd
Priority date: 2022-05-06
Filing date: 2022-05-06
Publication date: 2022-10-25
Anticipated expiration: 2032-05-06

Abstract

The application discloses measure passageway extension structure includes: a collection end; a plurality of measuring terminals; the number of the relays is matched with that of the measuring end, the static contact of each relay is connected with the measuring end, and the movable contact of each relay is connected with the acquisition end; and one end of the channel expansion controller is connected with the measuring end, and the other end of the channel expansion controller is connected with the coil end of the relay. By using the measurement channel expansion structure provided by the application in the testing device, the number of the measurement channels can be expanded to be several times of the number of the original channels, so that the resources of the acquisition equipment are fully utilized, and the investment of the testing device is reduced.

Description

Measurement channel expansion structure

Technical Field

The application relates to the technical field of test equipment and switches, in particular to a measurement channel extension structure.

Background

At present, most of testing means of electronic products utilize the characteristics of consistent physical size and electronic characteristics of products produced in large scale, a method of testing a mold is adopted, a tested product is placed in the testing mold to realize quick connection with equipment such as a testing instrument and meter, and the like, and all parameters are tested by computer integrated control. Usually, each physical channel can only obtain one simulation parameter, and in many cases, signals are not always acquired in each channel, the test device can acquire a lot of useless data, if the number of the parameters to be acquired exceeds the number of the channels of the test device, the parameters cannot be acquired completely, and the method can be realized only by adding more test devices, so that the test efficiency is reduced, and the test cost is greatly increased.

SUMMERY OF THE UTILITY MODEL

The application provides a measurement channel extension structure to solve the problem that the number of parameters needing to be collected at present exceeds the number of channels of a testing device, so that the parameters cannot be collected completely.

The embodiment of the application provides a measurement channel extension structure, includes: a collection end; a plurality of measuring terminals; the number of the relays is matched with that of the measuring end, the static contact of each relay is connected with the measuring end, and the movable contact of each relay is connected with the acquisition end; and one end of the channel expansion controller is connected with the measuring end, and the other end of the channel expansion controller is connected with the coil end of the relay.

Further, the passageway extension controller includes drive module, singlechip and opto-coupler, the one end of opto-coupler with the measuring terminal is connected, the other end of opto-coupler with the one end of singlechip is connected, the other end of singlechip with drive module's one end is connected, drive module's the other end with the coil end of relay is connected.

Furthermore, the measuring channel expanding structure also comprises a total relay, a movable contact of the total relay is connected with the acquisition end, a static contact of the total relay is connected with a movable contact of each relay, and a coil end of the total relay is connected with the other end of the channel expanding controller.

Furthermore, the number of the relays is three, and the relays include a first relay, a second relay and a third relay, wherein a fixed contact of the first relay is connected with the first measuring end, a movable contact of the first relay is connected with the collecting end, a fixed contact of the second relay is connected with the second measuring end, a movable contact of the second relay is connected with the collecting end, a fixed contact of the third relay is connected with the third measuring end, and a movable contact of the third relay is connected with the collecting end.

Further, the passageway extension controller includes drive module, singlechip and opto-coupler, drive module's one end is connected with the other end of singlechip, drive module's the other end respectively with the coil end of first relay, the coil end of second relay and the coil end of third relay are connected, the one end of singlechip with the other end of opto-coupler is connected, the one end of opto-coupler is connected with first measuring terminal, second measuring terminal and third measuring terminal respectively.

The technical scheme at least comprises the following advantages:

by using the measurement channel expansion structure provided by the application in the testing device, the number of the measurement channels can be expanded to be several times of the number of the original channels, so that the resources of the acquisition equipment are fully utilized, and the investment of the testing device is reduced.

Drawings

In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic view of an extended structure of a measurement channel including three measurement ends according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram of a signal conducting structure after a test sample is connected to a first measurement terminal according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the present application will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection can be mechanical connection or electrical connection; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In addition, the technical features mentioned in the different embodiments of the present application described below may be combined with each other as long as they do not conflict with each other.

The embodiment of the utility model provides an in, passageway extension controller includes drive module, singlechip and opto-coupler, the one end of opto-coupler with the measurement end is connected, the other end of opto-coupler with the one end of singlechip is connected, the other end of singlechip with drive module's one end is connected, drive module's the other end with the coil end of relay is connected. When the measuring end has the signal to produce, can be through opto-coupler this signal transmission to singlechip, the singlechip reads the voltage of opto-coupler output and judges, if be greater than the voltage setting value, then directly export voltage signal to drive module, amplify and close the relay that this measuring end corresponds by drive module with voltage signal, this measuring end and collection end lug connection this moment, measuring signal can directly input the collection end and carry out the collection of data, if the voltage value of opto-coupler output is less than the setting value, then drive module is out of work, the relay that this measuring end corresponds also can not be closed, data acquisition is unsuccessful.

The measuring channel expanding structure further comprises a main relay, movable contacts of the main relay are connected with the collecting end, static contacts of the main relay are connected with the movable contacts of each relay, and a coil end of the main relay is connected with the other end of the channel expanding controller. Once the signal needs to be collected at the measuring end, the main relay is closed when the measuring channel expansion structure needs to be measured.

Example one

Fig. 1 is a schematic view of an extended structure of a measurement channel including three measurement ends according to an embodiment of the present application. Referring to fig. 1, the measurement channel expansion structure includes three relays, which are a first relay 11, a second relay 12 and a third relay 13, respectively, a stationary contact of the first relay 11 is connected to a first measurement end B1, a movable contact of the first relay 11 is connected to the acquisition end a, a stationary contact of the second relay 12 is connected to a second measurement end B2, a movable contact of the second relay 12 is connected to the acquisition end a, a stationary contact of the third relay 13 is connected to a third measurement end B3, and a movable contact of the third relay 13 is connected to the acquisition end a.

The channel expansion controller 14 includes drive module 141, singlechip 142 and opto-coupler 143, drive module 141's one end is connected with singlechip 142's the other end, drive module 141's the other end respectively with the coil end of first relay 11, the coil end of second relay 12 and the coil end of third relay 13 are connected, singlechip 142's one end with opto-coupler 143's the other end is connected, opto-coupler 143's one end is connected with first measuring terminal B1, second measuring terminal B2 and third measuring terminal B3 respectively.

The movable contact of the main relay 10 is connected with the acquisition end a, the stationary contact of the main relay 10 is connected with the movable contact of the first relay 11, the movable contact of the second relay 12 and the movable contact of the third relay 13, and the coil end of the main relay 10 is connected with the other end of the driving module 141.

In the first embodiment of the present application, the first measurement end B1, the second measurement end B2, and the third measurement end B3 are respectively connected to different test samples, and when measurement is required, the samples connected to the different measurement ends sequentially work and generate signals, and fig. 2 is a schematic diagram of a signal conduction structure after the test sample is connected to the first measurement end provided in the first embodiment of the present application. Referring to fig. 2, after the first measurement end B1 is connected to the test sample, a signal is generated, the main relay 10 receives the signal through the channel expansion controller 14 and closes, the signal is transmitted to the single chip microcomputer 142 through the optical coupler 143, and the single chip microcomputer reads the voltage output by the optical coupler 143 and determines the voltage.

When the first measuring end B1, the second measuring end B2 and the third measuring end B3 are all connected with different test samples, the first relay 11 corresponding to the first measuring end B1, the second relay 12 corresponding to the second measuring end B2 and the third relay 13 corresponding to the third measuring end B3 are sequentially triggered, and according to the above-mentioned switching-on process, the data of the first measuring end B1, the second measuring end B2 and the third measuring end B3 are sequentially collected at the collecting end a, and the data sequentially work when the different test samples are connected to the first measuring end B1, the second measuring end B2 and the third measuring end B3, so that three groups of independent data can be separated from the final total test data after post-processing.

By using the measurement channel expansion structure provided by the first embodiment of the application in the test device, the number of the measurement channels can be expanded to be three times of the number of the original channels, so that the resources of the acquisition equipment are fully utilized, and the investment of the test device is reduced.

Example two

Referring to fig. 1, the first measurement end B1, the second measurement end B2, and the third measurement end B3 are all connected to different test samples, the first measurement end B1, the second measurement end B2, and the third measurement end B3 randomly generate signals, and the acquisition end only needs to acquire the randomly generated signals and does not need to distinguish which port is generated. The collected sampling signals are sent to the upper computer, a preset automatic test program is configured in the upper computer, and when the preset automatic test program is excited, the upper computer can analyze the sampling data after acquiring the sampling data uploaded by the test device.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of this invention are intended to be covered by the scope of the invention as expressed herein.

Claims

1. A measurement channel expansion structure, comprising:

a collection end;

a plurality of measuring terminals;

the number of the relays is matched with that of the measuring end, the static contact of each relay is connected with the measuring end, and the movable contact of each relay is connected with the acquisition end;

and one end of the channel expansion controller is connected with the measuring end, and the other end of the channel expansion controller is connected with the coil end of the relay.

2. The measurement channel expansion structure of claim 1,

the channel expansion controller comprises a driving module, a single chip microcomputer and an optical coupler, one end of the optical coupler is connected with the measuring end, the other end of the optical coupler is connected with one end of the single chip microcomputer, the other end of the single chip microcomputer is connected with one end of the driving module, and the other end of the driving module is connected with a coil end of the relay.

3. The measurement channel expansion structure of claim 1,

the device also comprises a main relay, the movable contact of the main relay is connected with the acquisition end, the static contact of the main relay is connected with the movable contact of each relay, and the coil end of the main relay is connected with the other end of the channel expansion controller.

4. The measurement channel expansion structure of claim 1,

the number of the relays is three, the relays comprise a first relay, a second relay and a third relay, a fixed contact of the first relay is connected with a first measuring end, a movable contact of the first relay is connected with the acquisition end, a fixed contact of the second relay is connected with a second measuring end, a movable contact of the second relay is connected with the acquisition end, a fixed contact of the third relay is connected with a third measuring end, and a movable contact of the third relay is connected with the acquisition end.

5. The measurement channel expansion structure according to claim 4, wherein the channel expansion controller comprises a driving module, a single chip microcomputer and an optical coupler, one end of the driving module is connected with the other end of the single chip microcomputer, the other end of the driving module is respectively connected with the coil end of the first relay, the coil end of the second relay and the coil end of the third relay, one end of the single chip microcomputer is connected with the other end of the optical coupler, and one end of the optical coupler is respectively connected with the first measuring end, the second measuring end and the third measuring end.