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Ultra-small handheld ultrasonic heat flow measuring device

A flow measuring device, ultrasonic technology, applied in the direction of measuring device, measuring flow/mass flow, liquid/fluid solid measurement, etc., can solve problems such as difficult automation, affecting calibration accuracy, time-consuming static method, etc., to reduce simulation Effect of reception sensitive circuit, high noise suppression performance, effect of ensuring quality

Inactive Publication Date: 2015-06-24
成都声立德克技术有限公司
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Problems solved by technology

[0015] The present invention designs an ultra-small hand-held ultrasonic heat flow measuring device, which solves the technical problem that the existing flowmeter calibration system mostly uses the volumetric flow standard device for calibration. On the one hand, the volumetric method is affected by temperature and pressure. In the calibration process, the calibration results must be corrected according to the actual working environment, thus affecting the calibration accuracy. On the other hand, the calibration accuracy of the static volume method is the highest, but it is applied to the actual online calibration work. This method is impractical, and the static method takes a long time and is not easy to automate

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Embodiment Construction

[0035] Combine below figure 1 and figure 2 , the present invention is further described:

[0036] An ultra-small hand-held ultrasonic heat flow measurement device includes an ultrasonic transceiver module, a liquid measurement module, a temperature measurement module, an ARM controller, a liquid crystal display module, a keyboard input module, a Bluetooth serial port module and a power management circuit. The ultrasonic transceiver module includes an upstream sensor probe 31, a downstream sensor probe 32, and an ultrasonic sending and receiving circuit. The upstream sensor probe 31 and the downstream sensor probe 32 are arranged on the outer wall of the pipeline 1 to be tested, and the above three form synchronous switching and complete The symmetrical design of the upstream and downstream ultrasonic transceiver loops has high noise suppression performance and reduces the static drift of the flow rate introduced by the circuit;

[0037]The temperature measurement module inc...

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Abstract

The invention relates to an ultra-small handheld ultrasonic heat flow measuring device comprising an ultrasonic wave transceiving module, a liquid measuring module, a temperature measuring module, an ARM controller, a liquid crystal display module, a keyboard input module, a Bluetooth serial port module and a power source management circuit. A control circuit with symmetrical ultrasonic wave transceiving is adopted by the ultra-small handheld ultrasonic heat flow measuring device, zero drift of ultrasonic measurement is further reduced, and the precision of a system is optimized.

Description

technical field [0001] The invention relates to a measuring device, in particular to an ultra-small hand-held ultrasonic heat flow measuring device. Background technique [0002] The research on flowmeter calibration abroad is relatively developed, and the representative ones are as follows: [0003] A. The National Flow Standards Institute of the United States mainly studies gas and liquid flow devices. The water flow verification device obtained in this research is the highest standard in the United States and is used for value transfer and scientific research. The method adopted is the weighing method. The accuracy level of the device is 0.13, and the verification device has no water tower. [0004] B. A high-precision liquid flow standard device built by the German National Physical Laboratory (PTB) also uses the weighing method, with a maximum flow of 2100m 3 / h. The device adopts a double-blade commutator, and takes into account many external factors that affect th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K17/08G01F1/66
Inventor 沈畅
Owner 成都声立德克技术有限公司
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