CN202814499U - Ultrasonic wave gain control device - Google Patents
Ultrasonic wave gain control device Download PDFInfo
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- CN202814499U CN202814499U CN 201220541816 CN201220541816U CN202814499U CN 202814499 U CN202814499 U CN 202814499U CN 201220541816 CN201220541816 CN 201220541816 CN 201220541816 U CN201220541816 U CN 201220541816U CN 202814499 U CN202814499 U CN 202814499U
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- gain control
- amplifying circuit
- ultrasonic wave
- modular converter
- signal
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Abstract
The utility model discloses an ultrasonic wave gain control device. The ultrasonic wave gain control device is characterized by comprising the components, namely a fixed gain amplifying circuit, a filter circuit, a voltage peak latching module, a logic controller, a microprogrammed control unit (MCU) and a gain control amplifying circuit. The ultrasonic wave gain control device accurately controls an ultrasonic wave signal, and thus can improve stability and reliability of ultrasonic wave applied in a content gauge and a flowmeter.
Description
Technical field
The utility model relates to a kind of ultrasound wave gain control.
Background technology
More existing liquid level gauges and flowmeter all adopt the principle of ultrasonic measurement to design.In the use procedure of reality, need to amplify the ultrasonic signal source, yet in amplification process, it is excessive the signal amplitude variation to occur inevitably, thereby may cause signal to debate the knowledge mistake, has a strong impact on precision and the reliability of measurement.
Summary of the invention
The purpose of this utility model is the shortcoming and defect that exists in order to overcome prior art, and provides a kind of ultrasound wave is gained to control, and improves measurement reliability and the precision of ultrasound wave when specifically being applied to liquid level gauge and flowmeter.
For achieving the above object, the technical solution of the utility model is to comprise following assembly:
The fixed gain amplifying circuit is used for received ultrasonic signal, and with the signal amplification that gains;
Filtering circuit is connected on the fixed gain amplifying circuit, and the signal after the gain amplification is carried out filtering;
The voltage peak latch module is connected in filtering circuit, is used for each peak value of pulse of locking signal, and is connected with the A/D modular converter with voltage comparator;
Logic controller is connected with the voltage peak latch module with voltage comparator; This logic controller is connected with the A/D modular converter simultaneously;
MCU is connected on the A/D modular converter, carries out control algorithm, and by D/A modular converter output control signal,
Gain control amplifying circuit is connected with the filtering circuit input, and with D/A modular converter control linkage.
Further setting is that the model of described fixed gain amplifying circuit is THS4302.
Principle of work of the present utility model and advantage are: be the ultrasound wave road signal after filtering is processed, one the tunnel is input to gain control amplifying circuit, another road is input to voltage peak latch module, voltage comparator and logic controller and obtains the control parameter, and will control parameter and be input to computing among the MCU, obtain steering order, this appointment is input in the gain control amplifying circuit, ultrasonic signal is accurately controlled, thereby can be improved ultrasonic applications in stability and the reliability of liquid level gauge and flowmeter.
Below in conjunction with specification drawings and specific embodiments the utility model is done further introduction.
Description of drawings
Fig. 1 the utility model embodiment theory diagram.
Embodiment
Below by embodiment the utility model is carried out concrete description; only be used for the utility model is further specified; can not be interpreted as the restriction to the utility model protection domain, the technician in this field can make some nonessential improvement and adjustment to the utility model according to the content of above-mentioned utility model.
Comprise following assembly such as Fig. 1: the fixed gain amplifying circuit, be used for received ultrasonic signal, and with the signal amplification that gains; This fixed gain amplifying circuit of present embodiment preferably adopts the THS4302 fixed gain amplifier of the production of Texas Instrument.
Filtering circuit is connected on the fixed gain amplifying circuit, and the signal after the gain amplification is carried out filtering;
The voltage peak latch module is connected in filtering circuit, is used for each peak value of pulse of locking signal, and is connected with the A/D modular converter with voltage comparator; This voltage peak latch module of present embodiment adopts commercially available peak lock storage to get final product, and reduces cost.
Logic controller is connected with the voltage peak latch module with voltage comparator; This logic controller is connected with the A/D modular converter simultaneously;
MCU is connected on the A/D modular converter, carries out control algorithm, and by D/A modular converter output control signal, this MCU of present embodiment is preferably ATMega8.
Gain control amplifying circuit is connected with the filtering circuit input, and with D/A modular converter control linkage, it is mature technology that amplifying circuit is controlled in this gain, can directly purchase from the market application.
Claims (2)
1. ultrasound wave gain control is characterized in that comprising following assembly:
The fixed gain amplifying circuit is used for received ultrasonic signal, and with the signal amplification that gains;
Filtering circuit is connected on the fixed gain amplifying circuit, and the signal after the gain amplification is carried out filtering;
The voltage peak latch module is connected in filtering circuit, is used for each peak value of pulse of locking signal, and is connected with the A/D modular converter with voltage comparator;
Logic controller is connected with the voltage peak latch module with voltage comparator; This logic controller is connected with the A/D modular converter simultaneously;
MCU is connected on the A/D modular converter, carries out control algorithm, and by D/A modular converter output control signal,
Gain control amplifying circuit is connected with the filtering circuit input, and with D/A modular converter control linkage.
2. a kind of ultrasound wave gain control according to claim 1, it is characterized in that: the model of fixed gain amplifying circuit is THS4302.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220541816 CN202814499U (en) | 2012-10-22 | 2012-10-22 | Ultrasonic wave gain control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220541816 CN202814499U (en) | 2012-10-22 | 2012-10-22 | Ultrasonic wave gain control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202814499U true CN202814499U (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220541816 Expired - Lifetime CN202814499U (en) | 2012-10-22 | 2012-10-22 | Ultrasonic wave gain control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202814499U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104027133A (en) * | 2014-06-12 | 2014-09-10 | 苏州森斯凌传感技术有限公司 | Ultrasonic probe gain control detecting system controlled through host radio frequency (RF) |
| CN104897219A (en) * | 2014-03-05 | 2015-09-09 | 陕西多奇电子科技有限公司 | High-accuracy low-power consumption ultrasonic flowmeter |
| CN107478282A (en) * | 2017-08-17 | 2017-12-15 | 西南科技大学 | Ultrasonic flow rate detection signal processing method and processing device, time difference method ultrasonic testing system |
-
2012
- 2012-10-22 CN CN 201220541816 patent/CN202814499U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104897219A (en) * | 2014-03-05 | 2015-09-09 | 陕西多奇电子科技有限公司 | High-accuracy low-power consumption ultrasonic flowmeter |
| CN104027133A (en) * | 2014-06-12 | 2014-09-10 | 苏州森斯凌传感技术有限公司 | Ultrasonic probe gain control detecting system controlled through host radio frequency (RF) |
| CN107478282A (en) * | 2017-08-17 | 2017-12-15 | 西南科技大学 | Ultrasonic flow rate detection signal processing method and processing device, time difference method ultrasonic testing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 198, Hualian Road, industrial park, Lingxi Town, Cangnan County, Wenzhou City, Zhejiang Province 325800 Patentee after: ZHEJIANG TANCY INSTRUMENT SCIENCE & TECHNOLOGY Co.,Ltd. Address before: 325000 No.1 Industrial Park, Lingxi Town, Cangnan County, Wenzhou City, Zhejiang Province Patentee before: ZHEJIANG TANCY INSTRUMENT SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |
|
| CX01 | Expiry of patent term |