CN219322290U - Control system capable of accurately stopping alternating current main motor of banknote counter - Google Patents
Control system capable of accurately stopping alternating current main motor of banknote counter Download PDFInfo
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- CN219322290U CN219322290U CN202223580407.5U CN202223580407U CN219322290U CN 219322290 U CN219322290 U CN 219322290U CN 202223580407 U CN202223580407 U CN 202223580407U CN 219322290 U CN219322290 U CN 219322290U
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Abstract
The utility model relates to a control system capable of accurately stopping an alternating current main motor of a banknote counter, which comprises: the motor control system comprises a main motor, a motor forward rotation control circuit, a motor reverse rotation control circuit, a motor control signal isolation circuit, a motor driving circuit, a motor running displacement signal collector and an ARM control chip; the ARM control chip is respectively connected with the motor forward rotation control circuit and the motor reverse rotation control circuit, and the motor forward rotation control circuit and the motor reverse rotation control circuit are sequentially connected with the motor control signal isolation circuit, the motor driving circuit and the main motor; the motor operation displacement signal collector is respectively connected with the main motor and the ARM control chip.
Description
Technical Field
The utility model belongs to the technical field of banknote counting machine motor control, and relates to a control system capable of accurately stopping an alternating current main motor of a banknote counting machine.
Background
At present, when an alternating current motor is used as power of a banknote counter transmission system, a state that braking is unstable frequently occurs when a machine stops to give an alarm, so that the next banknote is started after the machine stops, or the problem of follow Zhang Wubao and missing report caused by abnormal data is solved. Therefore, there is a need for a motor control system to achieve accurate shut down of the AC main motor of the banknote counter.
Disclosure of Invention
In order to solve the technical problems, the utility model aims to provide a control system capable of accurately stopping an alternating current main motor of a banknote counter.
The utility model provides a control system capable of accurately stopping an alternating current main motor of a banknote counter, which comprises: the motor control system comprises a main motor, a motor forward rotation control circuit, a motor reverse rotation control circuit, a motor control signal isolation circuit, a motor driving circuit, a motor running displacement signal collector and an ARM control chip;
the ARM control chip is respectively connected with the motor forward rotation control circuit and the motor reverse rotation control circuit, and the motor forward rotation control circuit and the motor reverse rotation control circuit are sequentially connected with the motor control signal isolation circuit, the motor driving circuit and the main motor; the motor operation displacement signal collector is respectively connected with the main motor and the ARM control chip.
In the control system capable of accurately stopping the alternating current main motor of the banknote counter, the ARM control chip is provided with two displacement timers, the time used by the current displacement signal and the time used by the next displacement signal are respectively recorded, and the ARM control chip compares the recorded time of the two displacement timers to judge the rotation state of the main motor.
The control system capable of accurately stopping the alternating current main motor of the banknote counter has at least the following beneficial effects:
after the control system is adopted, the time for the same displacement of the main motor to move can be used for judging whether the main motor belongs to a decelerating state or an accelerating state during banknote counting. The motor can stop in the shortest time after the zero crossing of the rotating speed of the main motor, so that the motor can not turn over too much, and the repeated sampling of the sensor is avoided. The recognition rate of the next banknote after the shutdown is improved, and meanwhile, the banknote flying rate of the next banknote after the shutdown is reduced.
Drawings
FIG. 1 is a block diagram of a control system for accurately stopping an AC main motor of a banknote counter according to the present utility model.
Detailed Description
When the continuous banknote counting of the banknote counting machine meets the problem that suspicious banknotes need to be shut down, the current banknote leaving the banknote counting channel is ensured to fall into the banknote receiving platform, the next banknote is ensured to be stopped in the channel, a proper position is ensured, the situation that the banknote is washed out of the channel to cause the banknote to slide and fly, or the banknote repeatedly passes through a sensor in the channel to cause repeated sampling is avoided, the brake of the banknote counting machine has high requirements, and the time required by each stop is different due to the frequency problem of alternating current when an alternating current motor is shut down, and the position is also different, so that the motor control system is particularly important.
Based on the background, the utility model provides a control system capable of accurately stopping an alternating current main motor of a banknote counter, as shown in fig. 1. The control system includes: the motor control system comprises a main motor, a motor forward rotation control circuit, a motor reverse rotation control circuit, a motor control signal isolation circuit, a motor driving circuit, a motor running displacement signal collector and an ARM control chip. The ARM control chip is respectively connected with the motor forward rotation control circuit and the motor reverse rotation control circuit, and the motor forward rotation control circuit and the motor reverse rotation control circuit are sequentially connected with the motor control signal isolation circuit, the motor driving circuit and the main motor; the motor operation displacement signal collector is respectively connected with the main motor and the ARM control chip.
When the continuous banknote counting encounters suspicious banknote, the ARM control chip outputs a stop signal to the motor forward rotation control circuit, the stop signal is processed by the motor control signal isolation circuit and then is sent to the motor drive circuit, and the motor drive circuit controls the main motor to execute stop action; the ARM control chip outputs a braking signal to the motor reverse rotation control circuit, the braking signal is processed by the motor control signal isolation circuit and then is sent to the motor driving circuit, and the motor driving circuit controls the main motor to execute braking action. At this time, although the stop and brake signals of the motor are given, the main motor is not stopped immediately due to the inertia of the main motor during rotation and the frequency of alternating current, the speed is reduced to zero, and the time of tens of milliseconds is required, the main motor operation displacement signal is collected by the motor operation displacement signal collector and sent to the ARM control chip, the ARM control chip judges the operation direction of the motor by the time for the same displacement on the timer collection operation displacement signal, and once the operation direction of the main motor is found to be changed, the brake signal is stopped immediately, so that repeated sampling is prevented.
The ARM control chip is provided with two displacement timers, the time used by the current displacement signal and the time used by the next displacement signal are respectively recorded, and the ARM control chip compares the recorded time of the two displacement timers to judge the rotation state of the main motor. In specific implementation, the ARM control chip controls the main motor as follows:
the first step: stopping the forward rotation; and a second step of: adding and reversing; and a third step of: triggering the interruption of the displacement signal, and recording the time_before used by the current displacement signal; fourth step: continuing reversing and recording the time_next used by the next displacement signal, and if the time_before is smaller than the time_next for a certain time, indicating that the motor is still decelerating and rotating forward; fifth step: the cycle continues until time_before is greater than time_next, indicating that the motor speed has passed 0, the motor begins to reverse, giving a signal to stop reversing. The next banknote will thus rest in the channel with little error and will not punch out the channel or cause the sensor to resample.
After the control system is adopted, the time for the same displacement of the main motor to move can be used for judging whether the main motor belongs to a decelerating state or an accelerating state during banknote counting. After the zero crossing of the main motor speed, the motor can stop in the shortest time without overlarge reverse rotation, so that the sensor is repeatedly sampled.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the scope of the utility model, but rather to enable any modification, equivalent replacement, improvement or the like to be made without departing from the spirit and principles of the utility model.
Claims (2)
1. A control system for accurately stopping an ac main motor of a banknote counter, comprising: the motor control system comprises a main motor, a motor forward rotation control circuit, a motor reverse rotation control circuit, a motor control signal isolation circuit, a motor driving circuit, a motor running displacement signal collector and an ARM control chip;
the ARM control chip is respectively connected with the motor forward rotation control circuit and the motor reverse rotation control circuit, and the motor forward rotation control circuit and the motor reverse rotation control circuit are sequentially connected with the motor control signal isolation circuit, the motor driving circuit and the main motor; the motor operation displacement signal collector is respectively connected with the main motor and the ARM control chip.
2. The control system for accurately stopping the ac main motor of the banknote counter according to claim 1, wherein the ARM control chip is provided with two displacement timers, the time for the current displacement signal and the time for the next displacement signal are respectively recorded, and the ARM control chip compares the recorded times of the two displacement timers to determine the rotation state of the main motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223580407.5U CN219322290U (en) | 2022-12-30 | 2022-12-30 | Control system capable of accurately stopping alternating current main motor of banknote counter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223580407.5U CN219322290U (en) | 2022-12-30 | 2022-12-30 | Control system capable of accurately stopping alternating current main motor of banknote counter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219322290U true CN219322290U (en) | 2023-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223580407.5U Active CN219322290U (en) | 2022-12-30 | 2022-12-30 | Control system capable of accurately stopping alternating current main motor of banknote counter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219322290U (en) |
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2022
- 2022-12-30 CN CN202223580407.5U patent/CN219322290U/en active Active
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