CN201489839U - Power down zero returning circuit of stepping motor for meter - Google Patents
Power down zero returning circuit of stepping motor for meter Download PDFInfo
- Publication number
- CN201489839U CN201489839U CN2009201869409U CN200920186940U CN201489839U CN 201489839 U CN201489839 U CN 201489839U CN 2009201869409 U CN2009201869409 U CN 2009201869409U CN 200920186940 U CN200920186940 U CN 200920186940U CN 201489839 U CN201489839 U CN 201489839U
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- CN
- China
- Prior art keywords
- power supply
- zero returning
- stepping motor
- meter
- stepper motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Control Of Stepping Motors (AREA)
Abstract
A power down zero returning circuit of a stepping motor for meter is characterized in that an energy storage electrolytic capacitor C1 is arranged at the output terminal of a power supply voltage stabilizing circuit through a diode D1; the battery jar voltage is switched in the AD data acquisition end of a singlechip MCU after receiving pressure division of resistors R1 and R2; the singlechip MCU acquires battery jar voltage acquisition signals in a real-time manner, and judges whether the power supply is powered down or not according to the battery jar voltage acquisition signals; and when the power supply is powered down, the singlechip MCU outputs zero returning control signals of the stepping motor and executes zero returning program of the stepping motor. The zero returning circuit utilizes a capacitor element to serve as the stand-by power supply in case that the meter is power down; and when the meter detects out that the external power supply is cut-off, the electrical quantity stored by the capacitor can lead the stepping motor to perform reliable zero returning under the control of the singlechip. The zero returning circuit has the advantages of simple structure, easy implementation, good using effect, and effective faulty vision prevention.
Description
Technical field
The utility model relates to the control circuit that is applied in the fork truck instrument, and a kind of instrument of more specifically saying so can self-zeroing control circuit after the instrument power down with stepper motor.
Background technology
At present, on engineering trucks such as fork truck, be extensive use of the stepper motor instrument, the stepper motor instrument is to be actuator with the stepper motor, shows various parameters such as fork truck oil mass, water temperature, speed, battery voltage with pointer.
The stepper motor instrument has very high reliability, accuracy and the good wilfulness of looking, and can show vehicle important process parameter.But the present stepper motor instrument of using in the fork truck field does not have power down returns zero function, and this instrument still keeps the state before the power down after outage, the illusion that this has visually caused instrument still working for the people.
The utility model content
The utility model is for avoiding above-mentioned existing in prior technology weak point, provide a kind of instrument to return zero circuit with the stepper motor power down, make the stepper motor instrument can reliably return zero after outage, avoiding the generation of wrong vision.
The utility model technical solution problem adopts following technical scheme:
The design feature that the utility model instrument is returned zero circuit with the stepper motor power down is through diode D1 energy storage electrochemical capacitor C1 to be set at the power supply stabilization circuit output terminal, battery voltage inserts the AD acquired signal end of single-chip microprocessor MCU after resistance R 1, R2 dividing potential drop, described single-chip microprocessor MCU obtains the battery voltage acquired signal in real time, and judge whether power down of power supply according to described battery voltage acquired signal, when power supply power-fail, return zero control signal by single-chip microprocessor MCU output stepper motor, carry out stepper motor and return zero program.
Compared with the prior art, the utility model beneficial effect is embodied in:
Standby power supply after the utility model has used capacitor element as the instrument power down, after instrument detects the external power source outage, the electric weight of dependence capacitance stores can make stepper motor reliably return zero by the control of single-chip microcomputer, it is simple in structure, easy to implement, result of use is good, can effectively avoid the generation of wrong vision.
Description of drawings
Fig. 1 is the utility model power principle figure.
Below pass through embodiment, and the utility model is described in further detail in conjunction with the accompanying drawings.
Embodiment
Referring to Fig. 1, in the present embodiment, through diode D1 energy storage electrochemical capacitor C1 is set at the power supply stabilization circuit output terminal, battery voltage inserts the AD acquired signal end of single-chip microprocessor MCU after resistance R 1, R2 dividing potential drop, single-chip microprocessor MCU obtains the battery voltage acquired signal in real time, judges whether power down of power supply according to the battery voltage acquired signal, and when power supply power-fail, return zero control signal by single-chip microprocessor MCU output stepper motor, carry out stepper motor and return zero program.
The power supply that is provided by storage battery is through power module output+5.5V voltage, should+the 5.5V power supply charges for energy storage electrochemical capacitor C1 by diode D1, also provides 5V power supply to whole wiring board simultaneously.
During power down, diode D1 stops energy storage electrochemical capacitor C1 externally to discharge, and makes wiring board can rely on the storing electricity of energy storage electrochemical capacitor C1 to work on a period of time.At this moment, battery voltage is given single-chip microprocessor MCU and is carried out the AD collection after the potential-divider network dividing potential drop that R1, R2 form, detect this port voltage during the cause for gossip of AD collection terminal, in case discovery power supply power-fail, single-chip microprocessor MCU is carried out stepper motor at once and is returned zero program, thereby makes the instrument stepper motor can return zero immediately after outage.The selection of energy storage electrochemical capacitor C1 will decide according to the consumed power of the power of stepper motor and other components and parts, but the electric weight of its storage must guarantee that stepper motor can return fully when full scale zero.
Claims (1)
1. instrument is returned zero circuit with the stepper motor power down, it is characterized in that through diode D1 energy storage electrochemical capacitor C1 being set at the power supply stabilization circuit output terminal, battery voltage inserts the AD acquired signal end of single-chip microprocessor MCU after resistance R 1, R2 dividing potential drop, described single-chip microprocessor MCU obtains the battery voltage acquired signal in real time, and judge whether power down of power supply according to described battery voltage acquired signal, when power supply power-fail, return zero control signal by single-chip microprocessor MCU output stepper motor, carry out stepper motor and return zero program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201869409U CN201489839U (en) | 2009-08-13 | 2009-08-13 | Power down zero returning circuit of stepping motor for meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201869409U CN201489839U (en) | 2009-08-13 | 2009-08-13 | Power down zero returning circuit of stepping motor for meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201489839U true CN201489839U (en) | 2010-05-26 |
Family
ID=42428708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201869409U Expired - Fee Related CN201489839U (en) | 2009-08-13 | 2009-08-13 | Power down zero returning circuit of stepping motor for meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201489839U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727725A (en) * | 2013-12-23 | 2015-06-24 | 加布里耶尔·赖奇有限责任两合公司 | Drive and control system for lifting gates |
| CN107153384A (en) * | 2017-06-29 | 2017-09-12 | 北京宏动科技有限公司 | Active MEMS inertia switches |
-
2009
- 2009-08-13 CN CN2009201869409U patent/CN201489839U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727725A (en) * | 2013-12-23 | 2015-06-24 | 加布里耶尔·赖奇有限责任两合公司 | Drive and control system for lifting gates |
| CN104727725B (en) * | 2013-12-23 | 2018-07-17 | 加布里耶尔·赖奇有限责任两合公司 | Driving for overhead door and control system |
| CN107153384A (en) * | 2017-06-29 | 2017-09-12 | 北京宏动科技有限公司 | Active MEMS inertia switches |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20140813 |
|
| EXPY | Termination of patent right or utility model |