CN216791371U - Quantitative powder cake weighing control device - Google Patents
Quantitative powder cake weighing control device Download PDFInfo
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- CN216791371U CN216791371U CN202123260559.2U CN202123260559U CN216791371U CN 216791371 U CN216791371 U CN 216791371U CN 202123260559 U CN202123260559 U CN 202123260559U CN 216791371 U CN216791371 U CN 216791371U
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Abstract
The utility model discloses a quantitative powder cake weighing control device which comprises a weighing platform and a display, wherein a weighing sensor is arranged in the weighing platform, a detection signal of the weighing sensor is processed by an amplification stabilizing circuit, a clamping protection circuit and a buffer isolation circuit in sequence and then is sent into a microprocessor, and the microprocessor is connected with the display through a data serial port; according to the utility model, the detection signals of the symmetrical load sensors are conditioned by arranging the amplification stabilizing circuit, the clamping protection circuit and the buffer isolation circuit, so that the fluctuation interference of the detection signals is effectively inhibited, the stability and the precision of the detection signals are improved, and the quantitative weighing control of the pressed powder is accurate and reliable.
Description
Technical Field
The utility model relates to the technical field of sour and hot powder production equipment, in particular to a quantitative cake powder weighing control device.
Background
Sour and hot vermicelli is produced by instant vermicelli equipment, starch is put into a machine and is filtered, the vermicelli is stirred, the vermicelli is discharged, the starch is aged, the vermicelli is cut, the vermicelli is washed, the starch is quantitatively molded, the vermicelli is dried and packaged, wherein the quantitative molding is to weigh the vermicelli cake by a weighing platform, the subsequent drying and packaging can be carried out only when the vermicelli cake reaches the standard weight range, however, in the weighing and weighing of the vermicelli cake by the conventional weighing platform, the weighing detection signal of the conventional weighing platform is easily interfered by fluctuation, the detection of a weighing sensor is caused to have errors, and the adverse effect is brought to the actual production.
The present invention provides a new solution to this problem.
SUMMERY OF THE UTILITY MODEL
In view of the above situation, the present invention provides a quantitative compact weighing control device to overcome the drawbacks of the prior art.
The technical scheme for solving the problem is as follows: a quantitative powder cake weighing control device comprises a weighing platform and a display, wherein a weighing sensor is arranged in the weighing platform, a detection signal of the weighing sensor is sent into a microprocessor after being processed by an amplification stabilizing circuit, a clamping protection circuit and a buffering isolation circuit in sequence, and the microprocessor is connected with the display through a data serial port.
Preferably, the amplification stabilizing circuit comprises a MOS transistor Q1, a drain of the MOS transistor Q1 is connected to the signal output terminal of the load cell through a resistor R1 and is grounded through a capacitor C1, and a gate of the MOS transistor Q1 is connected to a drain of the MOS transistor Q1 through a resistor R2 and is grounded through a zener diode DZ 1.
Preferably, the clamp protection circuit comprises diodes VD1 and VD2, the anode of the diode VD1 and the cathode of the diode VD2 are connected with the source of the MOS tube Q1, the cathode of the diode VD1 is connected with a +5V power supply, and the anode of the diode VD2 is grounded.
Preferably, the buffer isolation circuit comprises an operational amplifier AR1, a non-inverting input terminal of the operational amplifier AR1 is connected to one ends of a resistor R3 and a resistor R4, the other end of a resistor R4 is connected to the other end of the resistor R3 and an anode of a diode VD1 through a capacitor C2, and an inverting input terminal of the operational amplifier AR1 is connected to an output terminal of the operational amplifier AR1 and the microprocessor through a capacitor C3.
Preferably, the microprocessor adopts an AT89C51 singlechip.
Through the technical scheme, the utility model has the beneficial effects that: according to the utility model, the detection signals of the symmetrical load sensors are conditioned by arranging the amplification stabilizing circuit, the clamping protection circuit and the buffer isolation circuit, so that the fluctuation interference of the detection signals is effectively inhibited, the stability and the precision of the detection signals are improved, and the quantitative weighing control of the pressed powder is accurate and reliable.
Drawings
Fig. 1 is a schematic circuit diagram 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.
A quantitative powder cake weighing control device comprises a weighing platform and a display, wherein a weighing sensor is arranged in the weighing platform, a detection signal of the weighing sensor is sent into a microprocessor after being processed by an amplification stabilizing circuit, a clamping protection circuit and a buffering isolation circuit in sequence, and the microprocessor is connected with the display through a data serial port.
As shown in FIG. 1, the amplification stabilizing circuit comprises a MOS tube Q1, the drain electrode of the MOS tube Q1 is connected with the signal output end of the weighing sensor through a resistor R1 and is grounded through a capacitor C1, and the gate electrode of the MOS tube Q1 is connected with the drain electrode of the MOS tube Q1 through a resistor R2 and is grounded through a voltage stabilizing diode DZ 1.
The clamp protection circuit comprises diodes VD1 and VD2, the anode of the diode VD1 and the cathode of the diode VD2 are connected with the source electrode of the MOS tube Q1, the cathode of the diode VD1 is connected with a +5V power supply, and the anode of the diode VD2 is grounded.
The buffer isolation circuit comprises an operational amplifier AR1, wherein the non-inverting input end of the operational amplifier AR1 is connected with one ends of a resistor R3 and a resistor R4, the other end of a resistor R4 is connected with the other end of the resistor R3 and the anode of a diode VD1 through a capacitor C2, and the inverting input end of the operational amplifier AR1 is connected with the output end of an operational amplifier AR1 and the microprocessor through a capacitor C3.
The specific working principle of the utility model is as follows: weigh the muffin through the platform of weighing, convert the analog signal of telecommunication into after its inside weighing sensor senses the muffin weight and export, in order to guarantee the stability and the detection precision of detected signal output, at first adopt the stabilization circuit that amplifies to carry out the enhancement processing to detected signal, wherein, resistance R1 and electric capacity C1 form RC low pass filter and fall the noise to detected signal, eliminate outside mechanical noise and disturb, then send into and carry out signal amplification in MOS pipe Q1 and handle, and utilize zener diode DZ1 to carry out steady amplitude to MOS pipe Q1's grid turn-on voltage, thereby greatly promoted the stability of amplifying signal output amplitude. In order to prevent external force from interfering detection and damaging detection components, a clamp protection circuit is adopted to clamp and output signals of the MOS tube, so that the amplitude of the detection signals is kept within the range of 0-5V for output, thereby effectively avoiding external intrusion and protecting the weighing device from stable operation. Finally, the buffer isolation circuit adopts a buffer formed by resistors R3 and R4 and a capacitor C2 to adjust the detection signal, so that the output waveform of the detection signal is more continuous and stable, then the operational amplifier AR1 utilizes the voltage follower principle to carry out isolation output on the detection signal, the interference of a preceding stage circuit is avoided, and the effectiveness of the microprocessor in the detection signal receiving process is greatly improved. When specifically setting up, microprocessor chooses for use AT89C51 singlechip, has fine operation throughput, can calculate the muffin weight fast accurately to show in sending the weighing data to the display, make things convenient for the producers to look over.
In conclusion, the detection signals of the symmetrical load sensors are conditioned by arranging the amplification stabilizing circuit, the clamping protection circuit and the buffer isolation circuit, so that the fluctuation interference of the detection signals is effectively inhibited, the stability and the precision of the detection signals are improved, and the quantitative weighing control of the pressed powder is accurate and reliable.
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 (5)
1. The utility model provides a muffin ration weighing control device, includes weighing platform and display, its characterized in that: a weighing sensor is arranged in the weighing platform, a detection signal of the weighing sensor is processed by an amplification stabilizing circuit, a clamping protection circuit and a buffering isolation circuit in sequence and then sent into a microprocessor, and the microprocessor is connected with the display through a data serial port.
2. The quantitative cake powder weighing control device as claimed in claim 1, wherein: the amplifying and stabilizing circuit comprises a MOS tube Q1, the drain electrode of the MOS tube Q1 is connected with the signal output end of the weighing sensor through a resistor R1 and is grounded through a capacitor C1, and the grid electrode of the MOS tube Q1 is connected with the drain electrode of the MOS tube Q1 through a resistor R2 and is grounded through a voltage stabilizing diode DZ 1.
3. The quantitative cake weighing control device as claimed in claim 2, wherein: the clamp protection circuit comprises diodes VD1 and VD2, the anode of the diode VD1 and the cathode of the diode VD2 are connected with the source electrode of the MOS tube Q1, the cathode of the diode VD1 is connected with a +5V power supply, and the anode of the diode VD2 is grounded.
4. The quantitative cake powder weighing control device as claimed in claim 3, wherein: the buffer isolation circuit comprises an operational amplifier AR1, wherein the non-inverting input end of the operational amplifier AR1 is connected with one ends of a resistor R3 and a resistor R4, the other end of a resistor R4 is connected with the other end of the resistor R3 and the anode of a diode VD1 through a capacitor C2, and the inverting input end of the operational amplifier AR1 is connected with the output end of the operational amplifier AR1 and the microprocessor through a capacitor C3.
5. The quantitative cake weighing control device as claimed in claim 4, wherein: the microprocessor selects an AT89C51 singlechip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123260559.2U CN216791371U (en) | 2021-12-23 | 2021-12-23 | Quantitative powder cake weighing control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123260559.2U CN216791371U (en) | 2021-12-23 | 2021-12-23 | Quantitative powder cake weighing control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216791371U true CN216791371U (en) | 2022-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123260559.2U Active CN216791371U (en) | 2021-12-23 | 2021-12-23 | Quantitative powder cake weighing control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216791371U (en) |
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2021
- 2021-12-23 CN CN202123260559.2U patent/CN216791371U/en active Active
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