CN201476810U

CN201476810U - Practical device for automatically correcting meter

Info

Publication number: CN201476810U
Application number: CN2009201932402U
Authority: CN
Inventors: 王奉瑾
Original assignee: Zhongshan Torch Polytechnic
Current assignee: Zhongshan Torch Polytechnic
Priority date: 2009-08-18
Filing date: 2009-08-18
Publication date: 2010-05-19
Anticipated expiration: 2019-08-18

Abstract

The utility model discloses a practical device for automatically correcting a meter, which comprises a main test module and a plurality of slave test modules connected with the main test module, wherein each slave test module is arranged on a meter to be tested, and the main test module comprises a main test MCU, and a standard meter, a test signal generator and a communication module which are connected with the main test MCU; and the slave test module comprises a slave test MCU, and an address generating module and a communication interface which are connected with the slave test MCU, and the communication interface is connected with the communication module. The utility model aims at providing the practical device for automatically correcting the meter, which has convenient correction, time-saving property and low cost.

Description

The device of the automatic instrument calibration of a kind of practicality

[technical field]

The utility model relates to the device of the automatic instrument calibration of a kind of practicality.

[background technology]

At present, the instrumentation of belt sensor, because the precision of its Sensor section differs, need proofread and correct, instrument calibration equipment was cumbersome in the past, and not only consuming time but also cost does not have very desirable device that instrumentation is carried out quality control than therefore higher all the time, in order to address the above problem, the inventor designs the utility model.

[utility model content]

The utility model has overcome the deficiency of above-mentioned technology, the practical device of instrument calibration automatically that provide a kind of and proofreaied and correct convenience, saved time, cost is low.

The utility model adopts following technical scheme for addressing the above problem:

The device of the automatic instrument calibration of a kind of practicality, its include that a main test module is connected with a plurality of and main test module from test module, wherein each is arranged on the instrument to be measured from test module, standard scale, measuring signal generator, communication module that described main test module includes main test MCU and is connected with main test MCU; Described from test module include from test MCU and with from test the MCU address generating module, the communication interface that are connected, this communication interface is connected with communication module.

Compared with prior art, the beneficial effects of the utility model are:

1, will as the main test module of test benchmark with place identical test environment (referring to that test signal is identical) from test module, synchronism detection calibration, so calibration is accurate, convenient, save cost;

2, can demarcate many test instrumentations simultaneously;

3, signal transducer and signal condition part together can be demarcated, also the i.e. error calibration full automation of processes sensor part simultaneously;

4, main test module with measure simultaneously from test module, avoided the test error of data, reduced requirement to signal source, by main frame (PC computer), carry out Error processing, can reduce the procedure quantity that the test instrumentation fractional error is handled, reduce the programming difficulty of instrument exploitation;

5, in time will test and the error information record, and conveniently recall audit trail, the processing speed of instrument calibration is fast, and operating process is simple.

[description of drawings]

Fig. 1 is a synoptic diagram of the present utility model;

Fig. 2 is a main test module of the present utility model and a cut-away view that is connected from test module.

[embodiment]

Be described in further detail below in conjunction with accompanying drawing and embodiment of the present utility model:

Referring to Fig. 1-2, the utility model is the device of the automatic calibration instrument of a kind of practicality, it is made of two parts, form the main test module of demarcating 1 and need a plurality of of demarcation from test module 2, wherein each is arranged on the instrument to be measured from test module 2, standard scale 4, measuring signal generator 5, communication module 6 that described main test module 1 includes main test MCU 3 and is connected with main test MCU 3; Described from test module 2 include from test MCU 7 and with from test the MCU7 address generating module 8, the communication interface 9 that are connected, this communication interface 9 is connected with communication module 6.

This automatic correction system, because it can proofread and correct a plurality of instrument to be tested simultaneously, therefore be provided with an address generating module 8 from test module 2, after instrument to be tested is started working, address generating module 8 produces address signal, automatically discern the address of self from test MCU 7, and when communicating by letter, also together send address signal to main test MCU3 with main test MCU 3; Measuring signal generator 5 produces the signal that instrument is wanted the calibration physical quantity, and passes to each from test module 2 by communication module 6, makes from test module 2 and 1 pair of same physical quantity synchronism detection of main test module; The standard scale 4 of main test module 1 is responsible for obtaining a hypothesis testing reference data, and arrives from test module 2 by the data transfer of communication module 6 with its test; Main test MCU 3 is by comparing each respectively from the measurement data of test MCU 7 and the test data of standard scale 4, and error handled, provide a complete error correction data, and error correction data is transferred to each from test MCU 7, finish whole test calibration process.

Embodiment 1:

The correction of anemometer:

Existing anemometer major part makes and adopts the aerogenerator principle to realize that principle makes wind-force by blowing the impeller of air velocity transducer, it is rotated, according to the principle of generator.Its rotating speed is directly proportional with wind speed, but the air velocity transducer parameter discrete is very big, proofreaies and correct separately for every not possess feasibility at cost, makes it to be used in low side on the not high product of accuracy requirement.

Adopt this programme, air velocity transducer and equipment are put together proofread and correct.Anemometer to be corrected and sample table are placed in the same wind field, can concentrate anemometer is proofreaied and correct, because can carry out error correction according to the data of standard scale at any time by anemometer to be tested.Improved the precision of table to be measured, debugging has also reduced the cost of correction data precision in batches.

Embodiment 2:

The correction of gas sensor:

General gas sensor all need excite a specific environment for use, and the dispersion of gas sensor is all bigger simultaneously, and the dispersion of parameter surpasses more than 3%～5%.According to gas concentration the sensor that sensor carries out fine adjustment is cost an arm and a leg, can not popularize in actual applications.

The present invention is by carrying out the correction of gas sensor automatically, method is that sensor to be corrected and standard transducer are placed in the same gas, and along with the variation of gaseous diffusion source, the concentration of gas is descending, in this process, system has finished the correction for the treatment of correcting sensor automatically.Because standard transducer and sensor to be corrected are synchronism detections, and be less demanding to the absolute precision of gas source,, just can reach the correction for the treatment of correcting sensor as long as gas source can satisfy the requirement of full test specification.

Claims

1. the device of the automatic instrument calibration of practicality, it is characterized in that including that a main test module (1) is connected with a plurality of and main test module (1) from test module (2), wherein each is arranged on the instrument to be measured from test module (2), standard scale (4), measuring signal generator (5), communication module (6) that described main test module (1) includes main test MCU (3) and is connected with main test MCU (3); Described from test module (2) include from test MCU (7) and with from test MCU (7) address generating module (8), the communication interface (9) that are connected, this communication interface (9) is connected with communication module (6).