Non-contact portable ultrasonic wave liquid level measuring apparatus
A liquid level measuring device, ultrasonic technology, applied in measuring devices, radio wave measuring systems, liquid/fluid solids measurement, etc. problem, to achieve the effect of simple structure, wide application range and good safety
Active Publication Date: 2011-06-08
XIAN HUASHUN MEASURING EQUIP
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Problems solved by technology
At present, the existing ultrasonic liquid level alarm equipment is roughly divided into two types: external sticker type and plug-in type. The external sticker type needs two ultrasonic probes, the ultrasonic transmitting probe is connected to the output terminal of the transmitter, and the ultrasonic receiving probe is connected to the transmitter terminal. Input terminals, and the two probes should be on the same horizontal line when installing, and the adjacent distance should be small; when inserting installation, it is necessary to stop production and open hole welding, which is required when there are explosion-proof requirements or used for toxic and corrosive liquids. It is not suitable for bit over limit alarm
Moreover, most of these two types of equipment have the defects of adopting the separation structure of the ultrasonic probe and the transmitter and having no display, which increases the volume of the system and the possibility of dragging damage
Method used
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[0015] Accompanying drawing is embodiment of the present invention.
[0016] Below in conjunction with accompanying drawing, content of the present invention will be further described:
[0017] figure 1 Shown is a schematic diagram of a typical application of a portable liquid level indicator. The ultrasonic transceiver probe 3 is placed on the outer wall of the liquid storage tank 11. The signal processor 1 in the data processing module 10 of the hand-held watch case 12 gives an excitation pulse, which passes through the power amplifier driver 2. After the circuit is amplified, it is added to the ultrasonic transmitting and receiving probe 3 to transmit the ultrasonic signal. The ultrasonic signal is reflected on the tank wall and the liquid interface in the tank, and at the same time propagates along the entire tank body 11 and in the medium, and then the ultrasonic receiving and transmitting probe 3 receives it. After the signal is processed by the limiter protector 4, the...
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The invention discloses a non-contact portable ultrasonic liquid level measuring device which includes a data processing module, ultrasonic receiving and emitting probes connected with the data processing module, a display screen, an indicator, a frequency control key and a power control key, wherein, the ultrasonic receiving and emitting probes can be ultrasonic transducers capable of receiving and emitting signal. The signal processor output port of the data processing module is connected with one end of the ultrasonic receiving and emitting probes by a power amplification driver; the otherend of the ultrasonic receiving and emitting probes is connected with a limiting protector in the data processing module, and then connected with a receiving amplifier and a receiving geophone. The control signal input port of the signal processor is connected with the control key; the indicator signal output port of the signal processor is connected with the LCD display screen and the indicator and indicates the liquid level according to the values on the LCD display screen and different colors of the indicator. The non-contact portable ultrasonic liquid level measuring device has the advantages of simple structure, no need of installation, easiness in operation, and wide applicability in industries, such as ships, chemical industry, medical care, food, etc.
Description
technical field [0001] The invention relates to a device for measuring the presence or absence of liquid at a certain height in a container, in particular to a non-contact portable ultrasonic liquid level measuring device. Background technique [0002] In the liquid level engineering control of medicine, petroleum, chemical industry, electric power, food and other industries, the liquid level in the storage tank must be monitored. When the liquid level in the storage tank reaches the upper limit or lower limit, the liquid level alarm device needs to Warning on this. At present, the existing ultrasonic liquid level alarm equipment is roughly divided into two types: external sticking type and plug-in type. The external sticking type needs two ultrasonic probes, the ultrasonic transmitting probe is connected to the output terminal of the transmitter, and the ultrasonic receiving probe is connected to the output terminal of the transmitter. Input terminals, and the two probes s...
Claims
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IPC IPC(8): G01F23/296G01S15/08
Inventor 李斌宗健
Owner XIAN HUASHUN MEASURING EQUIP