Data transmission device of acidimeter calibrating instrument

Abstract

The utility model relates to a data transmission device of an acidometer verification instrument, and the device comprises the acidometer verification instrument which is provided with an output end, and the output end can output a data analog signal; the data conversion module comprises an analog-to-digital conversion unit and a digital-to-analog conversion unit, and a second output port of the digital-to-analog conversion unit can selectively output analog signals or digital signals; the multi-type conversion interface assembly comprises a first interface end and second interface ends, the first interface end is used for being electrically connected with the second output port of the digital-to-analog conversion unit, and the multiple multi-type second interface ends are selectively connected with the target to-be-detected instrument. A second output port of the digital-to-analog conversion unit can selectively output an analog signal or a digital signal, so that a required type of signal can be selected to adapt to different target instruments to be detected; moreover, the acidity meter verification instrument and the target instrument to be verified do not need to be connected through a complex patch cord, so that the problem that all parts of the patch cord are easy to fall off is avoided, and the problem that the length of the patch cord is limited can be solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of physical and chemical measurement calibration, and in particular relates to a data transmission device of an acidity meter calibrator. Background Art

[0002] Acidity meter calibrators are used in many calibration projects in the field of physical and chemical metrology. When using acidity meter calibrators to calibrate target instruments, the following problems exist: Currently, the signal output end of the acidity meter calibrator generally adopts a BNC female interface, while the data input end interface of the target instrument to be tested has a wide variety of interfaces. It is necessary to connect the signal output end of the acidity meter calibrator with the data input end of the target instrument to be tested through an adapter cable. The connection operation is cumbersome and the interface is easy to fall off, resulting in interruption of calibration; and the above method is limited by the length of the adapter cable, which is also extremely inconvenient for the calibration of online equipment; in addition, some target instruments to be tested only receive digital signals, while the output signal of the acidity meter calibrator is an analog signal, and there is a signal transmission incompatibility problem between the two, which brings troubles to the staff.

[0003] Therefore, it is necessary to improve the prior art to overcome the above defects in the prior art. Utility Model Content

[0004] In view of this, the embodiment of the present application is to solve at least one problem existing in the background technology and the purpose of the present application is achieved through the following technical solution: a data transmission device of a pH meter tester, suitable for connecting to a target instrument to be tested to detect the target instrument to be tested, the transmission device comprising:

[0005] The acidity meter tester has an output terminal, and the output terminal can output a digital analog signal;

[0006] A data conversion module, comprising an analog-to-digital conversion unit and a digital-to-analog conversion unit, wherein a first input port of the analog-to-digital conversion unit is electrically connected to an output end of the acidity meter detector, a first output port of the analog-to-digital conversion unit is signal-connected to a second input port of the digital-to-analog conversion unit, and a second output port of the digital-to-analog conversion unit can selectively output an analog signal or a digital signal;

[0007] A multi-type conversion interface component includes a first interface end and a plurality of multi-type second interface ends connected to the first interface end, wherein the first interface end is used to be electrically connected to the second output port of the digital-to-analog conversion unit, and the plurality of multi-type second interface ends can be selectively connected to a target instrument to be tested so as to transmit the standard data signal of the acidity meter calibrator to the target instrument to be tested for comparison with the data of the target instrument to be tested.

[0008] Optionally, in the data transmission device of the above-mentioned acidity meter calibrator, the analog-to-digital conversion unit comprises an analog-to-digital converter electrically connected to the acidity meter calibrator and a data transmitter connected to the analog-to-digital converter;

[0009] The digital-to-analog conversion unit includes a data receiver signal-connected to the data transmitter and a digital-to-analog converter electrically connected to the data receiver;

[0010] The digital-to-analog converter is provided with a button switch, and the button switch is operated to enable the digital-to-analog conversion unit to selectively output an analog signal or a digital signal.

[0011] Optionally, in the data transmission device of the above-mentioned acidity meter calibrator, the data conversion module includes a first data conversion module and a second data conversion module that are independently arranged, the first data conversion module and the second data conversion module respectively include a shell and a cavity arranged in the shell, the analog-to-digital conversion unit is arranged in the cavity of the first data conversion module, and the digital-to-analog conversion unit is arranged in the cavity of the second data conversion module.

[0012] Optionally, in the data transmission device of the acidity meter calibrator, the output end of the acidity meter calibrator is a BNC female port interface, and the first input port of the analog-to-digital conversion unit is a BNC male port.

[0013] Optionally, in the data transmission device of the above-mentioned acidity meter calibrator, the second output port of the digital-to-analog conversion unit is a BNC male port interface, and the first interface end of the multi-type conversion interface component is a BNC female port interface.

[0014] Optionally, in the data transmission device of the above-mentioned acidity meter calibrator, the second interface end of the multi-type conversion interface component includes a BNC male port interface, an alligator clip / data line interface, and a lemo interface.

[0015] Compared with the prior art, the present application has the following beneficial effects: by providing a data conversion module, the data conversion module includes an analog-to-digital conversion unit and a digital-to-analog conversion unit, the first input port of the analog-to-digital conversion unit is electrically connected to the output end of the acidity meter calibrator, the first output port of the analog-to-digital conversion unit is signal-connected to the second input port of the analog-to-digital conversion unit, and the second output port of the digital-to-analog conversion unit can selectively output an analog signal or a digital signal, so that the required type of signal can be selected to suit different target instruments to be tested; and, by setting the analog-to-digital conversion unit and the digital-to-analog conversion unit signal connection, there is no need for a complicated adapter cable connection between the acidity meter calibrator and the target instrument to be tested, thereby avoiding the problem of the adapter cable easily falling off at various places, and also solving the problem of limited length of the adapter cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a connection diagram of the data transmission device of the acidity meter tester shown in this application. DETAILED DESCRIPTION

[0017] The exemplary embodiments disclosed in the present application will be described in more detail below. In the following description, a large number of specific details are given in order to provide a more thorough understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present application, some technical features well known in the art are not described; that is, all features of the actual embodiments are not described here, and known functions and structures are not described in detail.

[0018] It should be understood that when an element or layer is referred to as "on ...", "adjacent to ...", "connected to" or "coupled to" other elements or layers, it can be directly on, adjacent to, connected to or coupled to other elements or layers, or there can be intervening elements or layers. On the contrary, when an element is referred to as "directly on ...", "directly adjacent to ...", "directly connected to" or "directly coupled to" other elements or layers, there is no intervening element or layer. It should be understood that although the terms first, second, third, etc. can be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present application, the first element, component, region, layer or part discussed below can be represented as the second element, component, region, layer or part. And when the second element, component, region, layer or part is discussed, it does not indicate that the present application necessarily has the first element, component, region, layer or part.

[0019] Spatially relative terms such as "under", "beneath", "below", "under", "over", "above", etc., may be used herein for convenience of description to describe the relationship of one element or feature to other elements or features shown in the figures. It should be understood that the spatially relative terms are intended to encompass different orientations of the device in use and operation in addition to the orientation shown in the figures.

[0020] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present application. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0021] In order to thoroughly understand the present application, detailed steps and detailed structures will be presented in the following description to illustrate the technical solution of the present application. The preferred embodiments of the present application are described in detail below, but in addition to these detailed descriptions, the present application may also have other implementation methods.

[0022] Please refer to Figure 1 As shown, the embodiment of the present application provides a data transmission device of a pH meter calibrator (hereinafter referred to as the data transmission device), which is suitable for connecting with a target instrument to be tested to detect the target instrument to be tested. The target instrument to be tested may be a pH (acidity) meter, a laboratory ion meter, an automatic potentiometric titrator, an online pH meter, an online ORP meter, etc. The type of the target instrument to be tested is not specifically limited here, and can be determined according to actual conditions.

[0023] The data transmission device comprises an acidometer tester 1, a data conversion module connected to the acidometer tester 1, and a multi-type conversion interface component 3 connected to the data conversion module. The acidometer tester 1 is used to output a target standard signal, the data conversion module is used to convert the target standard signal into a required type signal and transmit it to a target instrument to be tested 4 through the multi-type conversion interface component 3, and the error value of the target instrument to be tested 4 is calculated by recording the display value of the target instrument to be tested 4 and comparing it with the target standard signal value.

[0024] In this embodiment, the acidity meter tester 1 has an output terminal 11, and the output terminal 11 can output a digital analog signal.

[0025] The data conversion module includes an analog-to-digital conversion unit 21 and a digital-to-analog conversion unit 22. The first input port 211 of the analog-to-digital conversion unit 21 is electrically connected to the output terminal 11 of the acidometer tester 1, the first output port 212 of the analog-to-digital conversion unit 21 is signal-connected to the second input port 221 of the digital-to-analog conversion unit 22, and the second output port 222 of the digital-to-analog conversion unit 22 can selectively output an analog signal or a digital signal. In this embodiment, the output terminal 11 of the acidometer tester 1 is a BNC female port interface, and the first input port 211 of the analog-to-digital conversion unit 21 is a BNC male port, which is connected to the output terminal 11 of the acidometer tester 1 as a BNC female port interface.

[0026] Specifically, the analog-to-digital conversion unit 21 includes an analog-to-digital converter 213 electrically connected to the acidity meter calibrator 1, and a data transmitter 214 connected to the analog-to-digital converter 213; the digital-to-analog conversion unit 22 includes a data receiver 223 signal-connected to the data transmitter 214, and a digital-to-analog converter 224 electrically connected to the data receiver 223; the digital-to-analog converter 224 is also provided with a button switch, and the button switch is operated to enable the digital-to-analog conversion unit 22 to selectively output an analog signal or a digital signal. Among them, the analog-to-digital converter 213 can convert the analog signal outputted from the output terminal 11 of the acidity meter calibrator 1 into a digital signal, and transmit it to the data receiver 223 through the data transmitter 214. The data receiver 223 can turn off the digital-to-analog converter 224 by turning on the button switch. At this time, the digital-to-analog converter 224 is only used for data transmission, directly outputting the digital signal, or the digital signal can be converted into an analog signal through the digital-to-analog converter 224, and then the digital signal or the analog signal is transmitted to the target instrument to be tested 4 through the multi-type conversion interface component 3, so as to meet the detection of different instruments to be tested that receive different types of signals. In this embodiment, the analog-to-digital converter 213 is an ADS1255 converter, and the digital-to-analog converter 224 is a DAC1220 converter. Both of the above converters are mature technologies in this field, and their working principles are not described here. In other embodiments, other types of digital-to-analog converters and analog-to-digital converters can also be used, depending on the actual situation. In this embodiment, the signal after conversion and transmission by the transmitter 214 and the receiver 223 meets the accuracy requirement of 0.0006.

[0027] It is worth noting that in the present embodiment, the data conversion module includes a first data conversion module and a second data conversion module which are independently arranged, and the first data conversion module and the second data conversion module respectively include a shell and a cavity arranged in the shell, and the analog-to-digital conversion unit 21 is arranged in the cavity of the first data conversion module, and the digital-to-analog conversion unit 22 is arranged in the cavity of the second data conversion module. The advantage of such an arrangement is that the analog-to-digital conversion unit 21, the digital-to-analog conversion unit 22 and the multi-type conversion interface component 3 are all independently arranged, which can reduce the overall volume on the one hand, so that the three can be carried separately and conveniently; on the other hand, the independent arrangement combined with the signal transmission can make it possible to connect the acidity meter calibrator 1 with the target instrument 4 without complicated adapter cables, avoid the problem of the adapter cables being easily detached at various places, and solve the problem of the limited length of the adapter cables.

[0028] The multi-type conversion interface component 3 includes a first interface end 31 and a plurality of multi-type second interface ends 32 connected to the first interface end 31, the first interface end 31 is used to be electrically connected to the second output port 222 of the digital-to-analog conversion unit 22, and the plurality of multi-type second interface ends 32 can be selectively connected to the target instrument to be tested 4 to transmit the standard data signal of the acidity meter calibrator 1 to the target instrument to be tested 4 for data comparison with the target instrument to be tested 4. In this embodiment, the second output port 222 of the digital-to-analog conversion unit 22 is a BNC male port interface, and the first interface end 31 of the multi-type conversion interface component 3 is a BNC female port interface. The second interface end 32 of the multi-type conversion interface component 3 includes a BNC male port interface, an alligator clip / data line interface, and a lemo interface.

[0029] In summary, an analog-to-digital conversion unit and a digital-to-analog conversion unit are provided, a first input port of the analog-to-digital conversion unit is electrically connected to an output end of the acidometer calibrator, a first output port of the analog-to-digital conversion unit is signal-connected to a second input port of the analog-to-digital conversion unit, and a second output port of the digital-to-analog conversion unit can selectively output an analog signal or a digital signal, so that the required type of signal can be selected to suit different target instruments to be inspected; and, by providing the analog-to-digital conversion unit and the digital-to-analog conversion unit signal connection, there is no need for a complicated adapter cable connection between the acidometer calibrator and the target instrument to be inspected, thereby avoiding the problem of the adapter cable easily falling off at various locations, and also solving the problem of limited length of the adapter cable.

[0030] The above is only a specific implementation of the present application, and any improvements made based on the concept of the present application are deemed to be within the protection scope of the present application.

Claims

1. A data transmission device for a pH meter tester, characterized in that: Suitable for connecting with a target instrument to be inspected to detect the target instrument to be inspected, the transmission device comprises: The acidity meter tester has an output terminal, and the output terminal can output a digital analog signal; A data conversion module, comprising an analog-to-digital conversion unit and a digital-to-analog conversion unit, wherein a first input port of the analog-to-digital conversion unit is electrically connected to an output end of the acidity meter detector, a first output port of the analog-to-digital conversion unit is signal-connected to a second input port of the digital-to-analog conversion unit, and a second output port of the digital-to-analog conversion unit can selectively output an analog signal or a digital signal; A multi-type conversion interface component includes a first interface end and a plurality of multi-type second interface ends connected to the first interface end, wherein the first interface end is used to be electrically connected to the second output port of the digital-to-analog conversion unit, and the plurality of multi-type second interface ends can be selectively connected to a target instrument to be tested so as to transmit the standard data signal of the acidity meter calibrator to the target instrument to be tested for comparison with the data of the target instrument to be tested.

2. The data transmission device of the acidity meter tester according to claim 1, characterized in that: The analog-to-digital conversion unit includes an analog-to-digital converter electrically connected to the acidity meter detector and a data transmitter connected to the analog-to-digital converter; The digital-to-analog conversion unit includes a data receiver signal-connected to the data transmitter and a digital-to-analog converter electrically connected to the data receiver; The digital-to-analog converter is provided with a button switch, and the button switch is operated to enable the digital-to-analog conversion unit to selectively output an analog signal or a digital signal.

3. The data transmission device of the acidity meter tester according to claim 1, characterized in that: The data conversion module includes a first data conversion module and a second data conversion module that are independently arranged. The first data conversion module and the second data conversion module respectively include a shell and a cavity arranged in the shell. The analog-to-digital conversion unit is arranged in the cavity of the first data conversion module, and the digital-to-analog conversion unit is arranged in the cavity of the second data conversion module.

4. The data transmission device of the acidity meter tester according to claim 1, characterized in that: The output end of the acidity meter tester is a BNC female port interface, and the first input port of the analog-to-digital conversion unit is a BNC male port.

5. The data transmission device of the acidity meter tester according to claim 1, characterized in that: The second output port of the digital-to-analog conversion unit is a BNC male port interface, and the first interface end of the multi-type conversion interface component is a BNC female port interface.

6. The data transmission device of the acidity meter tester according to claim 5, characterized in that: The second interface end of the multi-type conversion interface component includes a BNC male port interface, an alligator clip / data line interface, and a Lemo interface.

Images