CN216558839U - Accurate detection device of interlayer paper - Google Patents
Accurate detection device of interlayer paper Download PDFInfo
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- CN216558839U CN216558839U CN202121644909.2U CN202121644909U CN216558839U CN 216558839 U CN216558839 U CN 216558839U CN 202121644909 U CN202121644909 U CN 202121644909U CN 216558839 U CN216558839 U CN 216558839U
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Abstract
The utility model discloses an interlayer paper accurate detection device, which comprises a sensor detection unit, a microprocessor and a touch display, wherein the sensor detection unit comprises a thickness detection sensor for detecting the analog quantity output of the interlayer paper thickness, and a detection signal of the thickness detection sensor is processed by a double operational amplifier feedback amplification circuit and a filter conversion circuit in sequence and then is sent to the microprocessor.
Description
Technical Field
The utility model relates to the technical field of interlayer paper thickness detection equipment, in particular to an accurate interlayer paper detection device.
Background
When the stacking machine is used for stacking, only one piece of interlayer paper needs to be placed on each layer, and if double layers of paper appear, a client breaks down when unstacking is carried out, so that the production efficiency of the client is influenced. Due to the problem of double-layer paper, the paper is complained by customers for many times.
The double-layer paper detection sensor detects the thickness of the interlayer paper, and the fluctuation of the thickness of the interlayer paper is large due to the manufacturer, batch, humidity, new and old degree and the like of the interlayer paper. The original sensor is of a switching value, and outputs a high-level signal when double-layer paper appears. The height of the sensor is not suitable for adjustment, the detection height is constant after the height of the sensor is adjusted, and due to the fact that the thickness fluctuation of different interlayer paper is large, the phenomenon that double-layer paper gives a false alarm or does not give an alarm often occurs.
The present invention provides a new solution to this problem.
SUMMERY OF THE UTILITY MODEL
In view of the above situation, the present invention is directed to provide an apparatus for accurately detecting interlayer paper.
The technical scheme for solving the problem is as follows: the utility model provides an accurate detection device of interlayer paper, includes sensor detecting element, microprocessor and touch display, sensor detecting element is including the thickness detection sensor that is used for detecting the analog output of interlayer paper thickness, the detected signal of thickness detection sensor sends into after two fortune are put feedback amplifier circuit and filter conversion circuit in proper order among the microprocessor, microprocessor passes through data bus connection touch display.
Preferably, the dual operational amplifier feedback amplifying circuit includes operational amplifiers AR1 and AR2, an inverting input terminal of the operational amplifier AR1 is connected to the thickness detection sensor through a resistor R1, a non-inverting input terminal of the operational amplifier AR1 is grounded through a resistor R2, an output terminal of the operational amplifier AR1 is connected to an inverting input terminal of the operational amplifier AR1 through a capacitor C1, and is connected to a non-inverting input terminal of the operational amplifier AR2 through a resistor R3, an inverting input terminal of the operational amplifier AR2 is connected to one end of the resistors R4, R5 and the capacitor C2, the other end of the resistor R4 is grounded through a capacitor C3, an output terminal of the operational amplifier AR2 is connected to the other end of the resistor R5 and the capacitor C2, and is grounded through a resistor R8, and a feedback adjusting component is further disposed between the inverting input terminal of the operational amplifier AR1 and the output terminal of the operational amplifier AR 2.
Preferably, the feedback regulation component includes a MOS transistor Q1, a drain of the MOS transistor Q1 is connected to one end of the resistors R6 and R7 and an inverting input end of the operational amplifier AR1, a gate of the MOS transistor Q1 is connected to the other end of the resistor R6 and one end of the capacitor C4, and a source of the MOS transistor Q1 is connected to the other end of the resistor R7 and the capacitor C4 and an output end of the operational amplifier AR 2.
Preferably, the filtering and converting circuit comprises an inductor L1, one end of the inductor L1 is connected to the output end of the operational amplifier AR2, and the other end of the inductor L1 is connected to ground through a capacitor C5 and is connected to the microprocessor through an a/D converter.
Through the technical scheme, the utility model has the beneficial effects that: according to the utility model, the thickness detection sensor with analog quantity output is adopted to detect the thickness of the interlayer paper, and the detection signal is processed by designing the double operational amplifier feedback amplification circuit and the filter conversion circuit, so that the detection precision of the interlayer paper thickness is greatly improved, accurate alarm is realized, and the failure rate is reduced.
Drawings
FIG. 1 is a schematic circuit diagram of a sensor detection unit of the present invention.
Detailed Description
The foregoing and other technical and scientific aspects, features and utilities of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings of fig. 1. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
The utility model provides an accurate detection device of interlayer paper, includes sensor detecting element, microprocessor and touch display, and sensor detecting element is including the thickness detection sensor that is used for detecting the analog output of interlayer paper thickness, the detected signal of thickness detection sensor sends into after two fortune are put feedback amplifier circuit and filter conversion circuit in proper order among the microprocessor, microprocessor passes through data bus connection touch display.
The double operational amplifier feedback amplifying circuit comprises operational amplifiers AR1 and AR2, an inverting input end of an operational amplifier AR1 is connected with the thickness detection sensor through a resistor R1, a non-inverting input end of an operational amplifier AR1 is grounded through a resistor R2, an output end of the operational amplifier AR1 is connected with an inverting input end of the operational amplifier AR1 through a capacitor C1 and is connected with a non-inverting input end of an operational amplifier AR2 through a resistor R3, an inverting input end of the operational amplifier AR2 is connected with one ends of resistors R4, R5 and a capacitor C2, the other end of the resistor R4 is grounded through a capacitor C3, an output end of the operational amplifier AR2 is connected with the other ends of the resistor R5 and the capacitor C2 and is grounded through a resistor R8, and a feedback adjusting component is further arranged between the inverting input end of the operational amplifier AR1 and the output end of the operational amplifier AR 2.
The feedback regulation component comprises a MOS tube Q1, the drain electrode of the MOS tube Q1 is connected with one end of a resistor R6 and a resistor R7 and the inverting input end of an operational amplifier AR1, the grid electrode of the MOS tube Q1 is connected with the other end of the resistor R6 and one end of a capacitor C4, and the source electrode of the MOS tube Q1 is connected with the other end of the resistor R7 and the capacitor C4 and the output end of the operational amplifier AR 2.
The filtering and converting circuit comprises an inductor L1, one end of the inductor L1 is connected with the output end of the operational amplifier AR2, and the other end of the inductor L1 is grounded through a capacitor C5 and is connected with the microprocessor through an A/D converter.
When the utility model is used specifically, the thickness detection sensor with analog output is adopted to detect the thickness of the interlayer paper, and because the analog output electrical signal is weak and is easy to be interfered by external noise, the detection signal is firstly adjusted by adopting the double operational amplifier feedback amplifying circuit, and the specific principle is as follows: the operational amplifier AR1 first amplifies the detection signal, and the capacitor C1 plays a role in phase compensation during the operation of the operational amplifier AR1, so as to prevent the amplified output waveform of the detection signal from being out of order. Then, the operational amplifier AR2 secondarily amplifies the output signal of the AR1, and the resistor R5 and the capacitor C2 form resistance-capacitance feedback compensation at the negative feedback end of the operational amplifier AR2, so as to ensure that the amplified output of the detection signal is continuously stable. Meanwhile, the capacitor C3 eliminates thermal noise generated at two ends of the resistor R4, and the operational amplifier precision is guaranteed.
In order to promote the detection signal amplification effect, avoid producing system error, still be provided with the feedback regulation subassembly between fortune ware AR1 and AR2, wherein, MOS pipe Q1 is as the core amplifier of feedback regulation subassembly, be used for drive amplification and stable processing to feedback signal, utilize electric capacity C4 to play fine compensation stabilization to MOS pipe Q1's output signal, thereby make two fortune work processes form big closed loop feedback control, thereby avoid system error well, effectively promote to interlayer paper thickness detection precision.
The inductor L1 and the capacitor C5 in the filter conversion circuit form LC filter to eliminate self-excited interference noise in a front-stage circuit, ensure the output accuracy of a detection signal, convert an analog detection signal into a digital quantity through an A/D converter and send the digital quantity into a controller for calculation. When the device is used specifically, the controller adopts a PLC (programmable logic controller), and after the PLC compares the interlayer paper thickness detection value with a system set value, the PLC sends out an alarm signal if the detected thickness difference is larger than the system set value, and alarm information is displayed on the touch display.
In conclusion, the thickness detection sensor with analog quantity output is adopted to detect the thickness of the interlayer paper, and the detection signal is processed by designing the double operational amplifier feedback amplification circuit and the filtering conversion circuit, so that the detection precision of the interlayer paper thickness is greatly improved, accurate alarm is realized, and the fault rate is reduced.
While the utility model has been described in further detail with reference to specific embodiments thereof, it is not intended that the utility model be limited to the specific embodiments thereof; for those skilled in the art to which the present invention pertains and related technologies, the extension, operation method and data replacement should fall within the protection scope of the present invention based on the technical solution of the present invention.
Claims (4)
1. The utility model provides an accurate detection device of interlayer paper, includes sensor detecting element, microprocessor and touch display, its characterized in that: the sensor detection unit comprises a thickness detection sensor for detecting the analog quantity output of the interlayer paper thickness, detection signals of the thickness detection sensor are sequentially processed by a double-operational amplifier feedback amplification circuit and a filter conversion circuit and then sent into the microprocessor, and the microprocessor is connected with the touch display through a data bus.
2. The device for accurately detecting the interlayer paper as claimed in claim 1, wherein: the double operational amplifier feedback amplifying circuit comprises operational amplifiers AR1 and AR2, an inverting input end of an operational amplifier AR1 is connected with the thickness detection sensor through a resistor R1, a non-inverting input end of an operational amplifier AR1 is grounded through a resistor R2, an output end of the operational amplifier AR1 is connected with an inverting input end of an operational amplifier AR1 through a capacitor C1 and is connected with a non-inverting input end of an operational amplifier AR2 through a resistor R3, an inverting input end of the operational amplifier AR2 is connected with one ends of resistors R4, R5 and a capacitor C2, the other end of the resistor R4 is grounded through a capacitor C3, an output end of the operational amplifier AR2 is connected with the other ends of the resistor R5 and the capacitor C2 and is grounded through a resistor R8, and a feedback adjusting component is further arranged between the inverting input end of the operational amplifier AR1 and the output end of the operational amplifier AR 2.
3. The device for accurately detecting interlayer paper according to claim 2, characterized in that: the feedback regulation component comprises a MOS tube Q1, wherein the drain electrode of the MOS tube Q1 is connected with one end of a resistor R6 and a resistor R7 and the inverting input end of an operational amplifier AR1, the grid electrode of the MOS tube Q1 is connected with the other end of the resistor R6 and one end of a capacitor C4, and the source electrode of the MOS tube Q1 is connected with the other end of the resistor R7 and the capacitor C4 and the output end of the operational amplifier AR 2.
4. The device for accurately detecting the interlayer paper as claimed in claim 3, wherein: the filtering and converting circuit comprises an inductor L1, one end of the inductor L1 is connected with the output end of the operational amplifier AR2, and the other end of the inductor L1 is grounded through a capacitor C5 and is connected with the microprocessor through an A/D converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121644909.2U CN216558839U (en) | 2021-07-20 | 2021-07-20 | Accurate detection device of interlayer paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121644909.2U CN216558839U (en) | 2021-07-20 | 2021-07-20 | Accurate detection device of interlayer paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216558839U true CN216558839U (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121644909.2U Active CN216558839U (en) | 2021-07-20 | 2021-07-20 | Accurate detection device of interlayer paper |
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| Country | Link |
|---|---|
| CN (1) | CN216558839U (en) |
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2021
- 2021-07-20 CN CN202121644909.2U patent/CN216558839U/en active Active
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