CN213714583U

CN213714583U - Full-automatic check gauge of analog quantity measuring instrument

Info

Publication number: CN213714583U
Application number: CN202023339402.4U
Authority: CN
Inventors: 范梵
Original assignee: Suzhou Industrial Park Tianhe Instrument Co ltd
Current assignee: Suzhou Industrial Park Tianhe Instrument Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-07-16
Anticipated expiration: 2030-12-31

Abstract

The utility model relates to a full-automatic calibrator for an analog quantity measuring instrument, which comprises a target to be calibrated and an automatic calibrator in signal connection with the target to be calibrated, wherein the automatic calibrator comprises a body, a data transmission interface arranged on the body and used for data transmission with the target to be calibrated, and a power supply interface electrically connected with the target to be calibrated; the automatic calibration instrument is internally provided with a calibration value threshold value, the automatic calibration instrument is electrified and enables the target to be calibrated to be electrified through a power interface, meanwhile, a calibration signal is sent to the target to be calibrated through a data transmission interface so that the target to be calibrated is in a calibration state, the target to be calibrated measures data and sends a data result to the automatic calibration instrument until the data result is in the calibration value threshold value, the target to be calibrated is calibrated, the automatic calibration instrument enables the target to be calibrated to be powered off and powered on through the power interface so that the target to be calibrated is in a measurement state, and the automatic calibration instrument is low in cost and high in efficiency.

Description

Full-automatic check gauge of analog quantity measuring instrument

Technical Field

The utility model relates to a full automatic check appearance of analog quantity measuring apparatu.

Background

The analog quantity measuring instrument needs to calibrate and check the measuring range of each product because each device forming the analog circuit has non-uniformity errors, and if the circuit of the measuring instrument is calibrated by itself, a special circuit needs to be designed for realization, so that the cost is very high, and the analog quantity measuring instrument is generally calibrated manually in the production process. The manual calibration needs a plurality of complex and expensive standard signal generating devices, and the calibration operators need to have part of professional knowledge to operate, and most of the processes are completed by manual operation, so that the production efficiency is low, and uncertain factors caused by manual operation are many.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a full automatic check appearance of with low costs, efficient analog quantity measuring apparatu.

In order to achieve the above purpose, the utility model provides a following technical scheme: a full-automatic calibrator for an analog quantity measuring instrument comprises a target to be calibrated and an automatic calibrator in signal connection with the target to be calibrated, wherein the automatic calibrator comprises a body, a data transmission interface and a power interface, the data transmission interface is arranged on the body and is used for carrying out data transmission with the target to be calibrated, and the power interface is electrically connected with the target to be calibrated;

a calibration value threshold is preset in the automatic calibration instrument, the automatic calibration instrument is powered on and passes through the power interface to enable the target to be calibrated to be powered on, meanwhile, a calibration signal is sent to the target to be calibrated through the data transmission interface to enable the target to be calibrated to be in a calibration state, the target to be calibrated measures data and sends a data result to the automatic calibration instrument until the data result is in the calibration value threshold, the target to be calibrated is calibrated, and the automatic calibration instrument enables the target to be calibrated to be powered off and powered on through the power interface so that the target to be calibrated is in a measurement state.

Further, the data transmission interface is a TTL interface or an RS485 communication interface.

Furthermore, the target to be verified is a temperature control meter, a thermocouple is arranged in the temperature control meter, and the automatic calibrator further comprises a millivolt signal interface in signal connection with the temperature control meter.

Furthermore, the target to be verified is a temperature control meter, a thermal resistor is arranged in the temperature control meter, and the automatic calibrator further comprises a resistor signal interface in signal connection with the temperature control meter.

Further, the automatic check meter further comprises a display screen which is arranged on the body and used for displaying numerical values.

Furthermore, the display screen is a double-row nixie tube, and the double-row nixie tube comprises an upper row of nixie tubes and a lower row of nixie tubes.

Further, the automatic calibrator further comprises an operating button arranged on the body, and the operating button is used for adjusting the calibration value threshold.

Furthermore, the full-automatic calibrator for the analog quantity measuring instrument further comprises a power supply for supplying power to the automatic calibrator, and the power supply is a direct-current power supply. .

Furthermore, the full-automatic calibrator for the analog quantity measuring instrument further comprises an upper computer connected with the automatic calibrator and the target to be calibrated, and the upper computer is used for acquiring data in the calibration process of the target to be calibrated.

The beneficial effects of the utility model reside in that: the method comprises the steps that a check value threshold value is preset in an automatic check meter, a check signal is sent to a target to be checked through a data transmission interface to enable the target to be checked to be in a check state, the target to be checked measures data and sends a data result to the automatic check meter until the data result is in the check value threshold value and the check of the target to be checked is completed, and the automatic check meter enables the target to be checked to be powered off and powered on through a power interface to enable the target to be checked to be in a measurement state. So that the whole checking process has low cost and high efficiency.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

Fig. 1 is a block diagram of an embodiment of the present invention;

fig. 2 is a schematic view of the automatic calibration apparatus shown in fig. 1.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to fig. 1, a fully automatic calibrator 100 for an analog measuring instrument according to a preferred embodiment of the present invention includes a target 1 to be calibrated and an automatic calibrator 2 in signal connection with the target 1 to be calibrated.

The automatic calibration instrument 2 includes a body 21, a data transmission interface disposed on the body 21 for data transmission with the target 1 to be calibrated, and a power interface electrically connected to the target 1 to be calibrated. The automatic calibrator 2 is connected with the target 1 to be calibrated through a data transmission interface to perform data transmission, so that calibration and data modification of the target 1 to be calibrated are automatically completed without manual intervention. The data transmission interface is a TTL interface or an RS485 communication interface, and is good in noise interference resistance and high in transmission rate. One end of the power supply interface is connected with the target 1 to be verified, the other end of the power supply interface is connected with the automatic calibrator 2, the power supply interface outputs power through one path of AC220, manual intervention is not needed, and the power supply interface automatically switches on and off the target 1 to be verified so as to be matched with data calibration of the target 1 to be verified.

A check value threshold value is preset in the automatic check meter 2, the automatic check meter 2 is powered on, the target 1 to be checked is powered on through a power interface, meanwhile, a check signal is sent to the target 1 to be checked through a data transmission interface, so that the target 1 to be checked is in a check state, the target 1 to be checked measures data and sends a data result to the automatic check meter 2, if the data result is in the check value threshold value, the target 1 to be checked is checked, and if the data result is not in the check value threshold value and the deviation is large, the check value threshold value is adjusted through the operation button 26, and the check signal is sent to the target 1 to be checked through the data transmission interface again; if the data result is not within the check value threshold value and the deviation is small, the automatic check meter 2 sends a check signal to the target 1 to be checked again through the data transmission port until the data result is within the check value threshold value and the check of the target 1 to be checked is completed, and the automatic check meter 2 enables the target 1 to be checked to be powered off and powered on through the power interface so that the target 1 to be checked is in a measurement state.

In this embodiment, the target 1 to be verified is a temperature control meter 1 capable of measuring and calibrating a cold end value and a hot end value, a thermocouple and/or a thermal resistor is disposed in the temperature control meter 1, in other embodiments, other devices may be disposed in the temperature control meter 1, or the target 1 to be verified may also be other meters, which is not specifically limited herein and is determined according to actual situations.

The automatic calibration instrument 2 further includes a millivolt signal interface and a resistance signal interface connected to the temperature control meter 1, specifically, the millivolt signal interface is connected to a thermocouple (not shown) in the temperature control meter 1, and the resistance signal interface is connected to a thermal resistor in the temperature control meter 1. A high-precision resistor (not shown) for voltage division and a CD4051 (not shown) for signal switching are arranged between the millivolt signal interface and the thermocouple, so that the stability of the millivolt signal is ensured; a precision resistor (not shown) with customized special specifications and a relay (not shown) for switching signals are arranged between the resistor signal interface and the thermal resistor, so that the stability of the output resistance value is ensured.

Referring to fig. 2, the automatic checking apparatus 2 further includes a display screen 25 and an operation button 26 disposed on the main body 21 for displaying numerical values. The display screen 25 is a double row nixie tube, which includes an upper row of nixie tubes 251 and a lower row of nixie tubes 252. The display screen 25 is used to display the checking steps, checking data, etc., the checking result, the error code, the use menu, etc. in real time. Specifically, the automatic checking apparatus 2 has an automatic calibration state and a parameter setting state, when the automatic checking apparatus 2 is in the parameter setting state, the upper row of nixie tubes 251 is used to display parameter names, and the lower row of nixie tubes 252 is used to display set parameter values. When the automatic checking apparatus 2 is in the automatic calibration state, the upper row of nixie tubes 251 is used to display the hot end value or the cold end value, and the lower row of nixie tubes 252 is used to display the channel number and the error code. In other embodiments, the display 25 may be other types of nixie tubes, and is not limited in particular.

Referring to fig. 2, the operation buttons 26 are used to adjust the check value threshold, the operation buttons 26 are disposed below the display screen 25, and the operation buttons 26 include an up key 261, a down key 262, a set key 263, and a shift key 264. The set key 263 is used to enter a target value or enter a parameter setting mode, or to save a previous parameter and enter a next parameter setting state, when the automatic checking apparatus 2 is in the parameter setting state, the up key 261 is used to increase the set value, the down key 262 is used to decrease the set value, and the shift key 264 is used to select the number of bits for modifying the parameter.

Please refer to fig. 1, the novel full-automatic calibrator 100 for analog measuring instruments further includes an upper computer 3 connected to the automatic calibrator 2 and the temperature control meter 1, the upper computer 3 is connected to the automatic calibrator 2 through an interface, in this embodiment, the upper computer 3 is connected to the automatic calibrator 2 through a set of 232 interfaces, and the calibrator has good universality, low cost and simple maintenance and testing. In other embodiments, the interface may also be configured as other interfaces, and is not specifically limited herein. The upper computer 3 is used for collecting data (error proportion and error problem points) in the verification process of the temperature control meter 1 and analyzing the data. The upper computer 3 may be a computer, a touch screen device or other various devices, and is not specifically limited herein, depending on the actual situation.

Referring to fig. 2, the full-automatic calibration instrument 2 of the analog quantity measurement instrument further includes a power supply 4 for supplying power to the automatic calibration instrument 2, and the power supply 4 is a dc power supply, so that the wide range of input voltage (AC 80V-AC 260V) is ensured, and the stability of output voltage is also ensured.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The full-automatic calibrator for the analog quantity measuring instrument is characterized by comprising a target to be calibrated and an automatic calibrator in signal connection with the target to be calibrated, wherein the automatic calibrator comprises a body, a data transmission interface and a power interface, the data transmission interface is arranged on the body and is used for carrying out data transmission with the target to be calibrated, and the power interface is electrically connected with the target to be calibrated;

2. The full-automatic calibrator for analog quantity meters according to claim 1, wherein said data transmission interface is a TTL interface or an RS485 communication interface.

3. The automatic calibrator for an analog quantity measuring instrument according to claim 1, wherein the target to be calibrated is a temperature-controlled meter, a thermocouple is disposed in the temperature-controlled meter, and the automatic calibrator further comprises a millivolt signal interface in signal connection with the temperature-controlled meter.

4. The fully automatic calibrator for analog quantity meters according to claim 1, wherein said target to be calibrated is a temperature-controlled meter, a thermal resistor is disposed in said temperature-controlled meter, and said fully automatic calibrator further comprises a resistor signal interface in signal connection with said temperature-controlled meter.

5. The analog-quantity-meter fully-automatic checking instrument according to claim 1, wherein the automatic checking instrument further comprises a display screen disposed on the body for displaying a numerical value.

6. The fully automatic calibrator for analog quantity meters according to claim 5, wherein said display screen is a double row of nixie tubes, said double row of nixie tubes comprising an upper row of nixie tubes and a lower row of nixie tubes.

7. The analog-quantity-meter fully-automatic check meter according to claim 5, wherein the automatic check meter further comprises an operation button provided on the body, the operation button being configured to adjust the check value threshold.

8. The analog-quantity-meter fully automatic calibration instrument according to claim 1, further comprising a power supply for supplying power to the automatic calibration instrument, wherein the power supply is a dc power supply.

9. The full-automatic calibrator for analog quantity meters according to claim 1, wherein the full-automatic calibrator for analog quantity meters further comprises an upper computer connected with the automatic calibrator and the target to be calibrated, and the upper computer is used for acquiring data in the calibration process of the target to be calibrated.