CN103115715B - Yarn tension sensor system and realization method - Google Patents
Yarn tension sensor system and realization method Download PDFInfo
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- CN103115715B CN103115715B CN201310025268.6A CN201310025268A CN103115715B CN 103115715 B CN103115715 B CN 103115715B CN 201310025268 A CN201310025268 A CN 201310025268A CN 103115715 B CN103115715 B CN 103115715B
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Abstract
The invention relates to a yarn tension sensor system and a realization method. An existing tension sensor is too high in price and not accutate in precision, enabling the price of textile machinery to be increased, and reducing working efficiency of spinning. The yarn tension sensor system and the method comprise an electric linear hall-effect sensor, a programmable gain amplifier, a hall-signal bias circuit, a numerical control potentionmeter network, a microprogrammed control unit (MCU), a signal superposition circuit and a low-pass filter circuit. An output end of the linear hall-effect sensor is connected with the programmable gain amplifier. The hall-signal bias circuit is connected with the numerical control potentionmeter network. An amplification factor control end of the MCU is connected with the programmable gain amplifier. A bias adjusting output end of the MCU is connected with the numerical control potentionmeter network. The programmable amplifier is connected with a reverse direction amplifying input end of a signal amplifier circuit. The numerical control potentionmeter network is connected with a forward direction amplifying input end of the signal superposition circuit which is connected with the low-pass filter circuit. A yarn tension sensor of the yarn tension sensor system and the method improves precision of a common yarn tension sensor and reduces the cost of the common yarn tension sensor.
Description
Technical field
The present invention relates to a kind of textile machine equipment, be specifically related to a kind of yarn tension sensor system and implementation method.
Background technology
Yarn tension sensor, as an important sensor in caused by spinning industrial production process, has very important effect.The balance and stability of yarn tension is directly connected to the carrying out smoothly of quality, production efficiency and following process of product.Existing tension pick-up selling at exorbitant prices, precision is inadequate, has improved the work efficiency of the price of textile machine and the spinning of reduction.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, proposed a kind of yarn tension sensor system and implementation method.
A kind of yarn tension sensor device comprises linear hall sensor, programmable amplifier, hall signal biasing circuit, digital potentiometer network, MCU, superimposed signal circuit and low-pass filter circuit;
The output terminal of linear hall sensor is connected with the input end of programmable amplifier, the output terminal of hall signal biasing circuit is connected with the input end of digital potentiometer network, the enlargement factor control end of MCU is connected with the input end of programmable amplifier, the bias-adjusted output terminal of MCU is connected with digital potentiometer network input end, the output terminal of programmable amplifier is connected with the reverse amplification input end of signal amplification circuit, the output terminal of digital potentiometer network amplifies input end with the forward of superimposed signal circuit and is connected, the output terminal of superimposed signal circuit is connected with the input end of low-pass filter circuit.
MCU controls the enlargement factor of programmable amplifier, adjust the enlargement factor of linear hall sensor input signal, MCU controls the resistance ratio of digital potentiometer network, adjust the intrinsic standoff ratio of hall signal biasing circuit output voltage, the output signal of programmable amplifier and digital potentiometer network is delivered to superimposed signal circuit to superpose, finally superimposed signal circuit is sent into low-pass filter circuit, and by the result output obtaining.
A kind of implementation method of yarn tension sensor comprises the following steps:
Step 1: the output voltage signal of linear hall sensor is sent into programmable amplifier;
Step 2: the enlargement factor that programmable amplifier is set according to MCU is amplified the output voltage signal of linear hall sensor;
Step 3: hall signal biasing circuit output voltage signal is sent into digital potentiometer network;
Step 4: the output voltage signal of the resistance comparison hall signal biasing circuit that digital potentiometer network is set according to MCU carries out dividing potential drop;
Step 5: the output signal of step 2 is sent into the reverse amplification input end of superimposed signal circuit, the forward of the output signal of step 4 being sent into superimposed signal circuit amplifies input end;
Step 6: finally the output of superimposed signal circuit is sent into the input of low-pass filter circuit, and the hall signal biasing circuit output voltage signal described in the output using the output of low-pass filter as whole hardware unit is adjusted to the minimum output of signal amplification circuit by MCU;
The adjustment of the enlargement factor of described programmable amplifier is undertaken by MCU, and is adjusted to the maximum permission input of superimposed signal circuit;
The adjustment of the resistance ratio of described digital potentiometer network is undertaken by MCU, and to make linear hall sensor be input as zero time superimposed signal circuit be output as zero.
Described output signal low-pass filter circuit is a Butterworth second-order low-pass filter.
Compared with prior art, the invention has the beneficial effects as follows: improve yarn tension sensor precision, reduce yarn tension sensor cost, reduce the volume of yarn tension sensor, improve the integrated level of yarn tension sensor, convenient and various yarn tension controllers are used in combination, and reduce yarn tension sensor at the debug time of various yarn tension controllers.
Accompanying drawing explanation
Fig. 1 is hardware block diagram of the present invention;
Fig. 2 is that method of the present invention realizes block diagram.
Embodiment
As shown in Figure 1, a kind of yarn tension sensor device comprises linear hall sensor, programmable amplifier, hall signal biasing circuit, digital potentiometer network, MCU, superimposed signal circuit and low-pass filter circuit;
The output terminal of linear hall sensor is connected with the input end of programmable amplifier, the output terminal of hall signal biasing circuit is connected with the input end of digital potentiometer network, the enlargement factor control end of MCU is connected with the input end of programmable amplifier, the bias-adjusted output terminal of MCU is connected with digital potentiometer network input end, the output terminal of programmable amplifier is connected with the reverse amplification input end of signal amplification circuit, the output terminal of digital potentiometer network amplifies input end with the forward of superimposed signal circuit and is connected, the output terminal of superimposed signal circuit is connected with the input end of low-pass filter circuit,
MCU controls the enlargement factor of programmable amplifier, adjust the enlargement factor of linear hall sensor input signal, MCU controls the resistance ratio of digital potentiometer network, adjust the intrinsic standoff ratio of hall signal biasing circuit output voltage, the output signal of programmable amplifier and digital potentiometer network is delivered to superimposed signal circuit to superpose, finally superimposed signal circuit is sent into low-pass filter circuit, and by the result output obtaining;
As shown in Figure 2, a kind of implementation method of yarn tension sensor comprises the following steps:
Step 1: the output voltage signal of linear hall sensor is sent into programmable amplifier;
The maximum that step 2:MCU is adjusted to superimposed signal circuit by programmable amplifier enlargement factor allows input, and the enlargement factor that programmable amplifier is set according to MCU is amplified the output voltage signal of linear hall sensor;
Step 3: hall signal biasing circuit output voltage signal is sent into digital potentiometer network;
Step 4:MCU adjusting resistance values than make linear hall sensor be input as zero time superimposed signal circuit be output as zero, the output voltage signal of the resistance comparison hall signal biasing circuit that digital potentiometer network is set according to MCU carries out dividing potential drop;
Step 5: the output signal of step 2 is sent into the reverse amplification input end of superimposed signal circuit, the forward of the output signal of step 4 being sent into superimposed signal circuit amplifies input end;
Step 6: finally the output of superimposed signal circuit is sent into the input of low-pass filter circuit, and the output using the output of low-pass filter as whole hardware unit.
Claims (2)
1. a yarn tension sensor device, comprises linear hall sensor, programmable amplifier, hall signal biasing circuit, digital potentiometer network, MCU, superimposed signal circuit and low-pass filter circuit, it is characterized in that: the output terminal of linear hall sensor is connected with the input end of programmable amplifier, the output terminal of hall signal biasing circuit is connected with the input end of digital potentiometer network, the enlargement factor control end of MCU is connected with the input end of programmable amplifier, the bias-adjusted output terminal of MCU is connected with digital potentiometer network input end, the output terminal of programmable amplifier is connected with the reverse amplification input end of superimposed signal circuit, the output terminal of digital potentiometer network amplifies input end with the forward of superimposed signal circuit and is connected, the output terminal of superimposed signal circuit is connected with the input end of low-pass filter circuit,
MCU controls the enlargement factor of programmable amplifier, adjust the enlargement factor of linear hall sensor input signal, MCU controls the resistance ratio of digital potentiometer network, adjust the intrinsic standoff ratio of hall signal biasing circuit output voltage, the output signal of programmable amplifier and digital potentiometer network is delivered to superimposed signal circuit to superpose, finally superimposed signal circuit is sent into low-pass filter circuit, and by the result output obtaining.
2. a kind of yarn tension sensor device according to claim 1, is characterized in that: described low-pass filter circuit is a Butterworth second-order low-pass filter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310025268.6A CN103115715B (en) | 2013-01-23 | 2013-01-23 | Yarn tension sensor system and realization method |
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| CN201310025268.6A CN103115715B (en) | 2013-01-23 | 2013-01-23 | Yarn tension sensor system and realization method |
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| CN103115715A CN103115715A (en) | 2013-05-22 |
| CN103115715B true CN103115715B (en) | 2014-11-05 |
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| CN104779926B (en) * | 2015-04-08 | 2018-07-13 | 杭州电子科技大学 | A kind of yarn flaws detection signal differential amplifying circuit |
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| CN102946234A (en) * | 2012-11-09 | 2013-02-27 | 杭州电子科技大学 | High-precision amplifying circuit for detecting yarn tension |
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| CN203178019U (en) * | 2013-01-23 | 2013-09-04 | 杭州电子科技大学 | Yarn tension sensor system |
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| EP0325793B1 (en) * | 1987-12-31 | 1992-06-17 | ROJ ELECTROTEX S.p.A. | Weft-feeler with automatic adjustment of the delay time, for weft feeders of shuttleless looms |
| US5764495A (en) * | 1996-05-01 | 1998-06-09 | Compaq Computer Corporation | Variable-frequency variable-input-voltage converter with minimum frequency limit |
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Effective date of registration: 20221103 Address after: 312500 No. 283, Lijiang Road, Qixing street, Xinchang County, Shaoxing City, Zhejiang Province Patentee after: ZHEJIANG KANGLI AUTOMATIC CONTROL TECHNOLOGY CO.,LTD. Address before: 310018 No. 2 street, Xiasha Higher Education Zone, Hangzhou, Zhejiang Patentee before: HANGZHOU DIANZI University |
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