Standard constant temperature tank touch screen intelligent measurement and control and automatic measurement detection system

Abstract

The invention discloses a standard constant temperature bath touch screen intelligent measurement control and automatic metering detection system. By utilizing intelligentized program temperature control technology, a detecting temperature field with good uniformity and a small fluctuation degree is effectively provided, and intelligentized detection on various detected temperature instruments can be completed automatically, rapidly and efficiently. The detection system comprises a standard constant temperature bath, a touch screen and PLC intelligent temperature controller, a multi-path electric signal acquisition conditioning and converting device, a temperature comparator / counter, a data processing and monitoring unit, a multi-path picture signal acquisition device, an image identification and controller, an intelligent channel switching and controlling unit, a database management and reservoir, an intelligentized parameter control unit, and a record inquiring and certificate printing device. Temperature signals or indicating value images of detected temperature sensor and / or detected temperature instruments without temperature signal output are subjected to acquisition, identification, comparison and data processing treatments, a detection result is obtained finally, and a detection record and a detection report are formed.

Description

technical field [0001] The invention relates to the technical field of automatic measurement and verification of temperature instruments, in particular to an intelligent measurement and control and automatic measurement and detection system with a touch screen of a standard constant temperature tank. Background technique [0002] The standard constant temperature bath is mainly used for the verification and calibration of various temperature instruments by legal metrology and testing institutions, and provides a uniform and stable temperature field for them. At present, domestic and foreign merchants still do not use computers and touch screens to control the temperature of standard constant temperature tanks. They only control the preset temperature through buttons or potentiometers to achieve a stable balance. Multiple temperature points cannot be preset, and man-machine dialogue cannot be carried out. Each temperature verification point can only be controlled separately. ...

AI Technical Summary

Problems solved by technology

At present, domestic and foreign merchants still do not use computers and touch screens to control the temperature of standard constant temperature tanks. They only control the preset temperature through buttons or potentiometers to achieve a stable balance. Multiple temperature points cannot be preset, and man-machine dialogue cannot be carried out. Each temperature verification point can only be controlled separately. After the temperature of each point is stable, the verification is carried out, and then the next temperature point is set after completion. The feedback information of temperature stability cannot be obtained in time. Each step requires manual operation by technicians, and the control The temperature accuracy is low and the temperature field is not stable enough

In addition, the existing temperature instrument detection equipment is still unable to automatically verify the temperature instruments (thermometer, pointer thermometer, digital display thermometer) without temperature signal output, which must be manually operated by the verification personnel; semi-automatic detection equipment can only detect For temperature instruments with temperature signal output, that is, temperature sensors (thermocouples, thermal resistances), each semi-automatic detection device can detect up to 7 similar temperature sensors at a time, and cannot automatically print certificates and records, resulting in the utilization rate of standard constant temperature baths and The detection efficiency is very low, it is difficult to meet the actual detection needs

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