CN201307840Y - Electric motor controller of screw mandrel drive mechanism - Google Patents
Electric motor controller of screw mandrel drive mechanism Download PDFInfo
- Publication number
- CN201307840Y CN201307840Y CNU2008203023611U CN200820302361U CN201307840Y CN 201307840 Y CN201307840 Y CN 201307840Y CN U2008203023611 U CNU2008203023611 U CN U2008203023611U CN 200820302361 U CN200820302361 U CN 200820302361U CN 201307840 Y CN201307840 Y CN 201307840Y
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- China
- Prior art keywords
- travel switch
- resistance
- closed travel
- normally closed
- switching tube
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- 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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Abstract
The utility model relates to an electric motor controller of a screw mandrel drive mechanism, which comprises a singlechip, an H bridge drive circuit, a current detection circuit, a drive interlock circuit, a normal-closed travel switch and a normal-closed travel switch detection circuit. In the drive interlock circuit, a transistor collector is connected with a gate pole of a lower bridge arm switch pipe; an emitter pole is grounded; and a base pole is connected with a control signal corresponding to an upper bridge arm switch pipe by a resistance. The normal-closed travel switch is connected between the lower bridge arm switch pipe and the ground in series, when a screw mandrel moves to an tail end position, the screw mandrel touches the normal-closed travel switch and switches off the normal-closed travel switch, and an electric motor automatically stops. The normal-closed travel switch detection circuit comprises a circuit detecting the on or off state of the normal-closed travel switch detection circuit, and connects the signal with the singlechip. The utility model has the advantages that the drive interlock circuit avoids the danger of short circuit caused by conduction of the upper bridge arm and the lower bridge arm at the same time, the normal-closed travel switch prevents the rotation of the electric motor from stopping at the front tail end and the rear tail end to cause hazard under abnormal condition, so the safe work of the controller is ensured.
Description
Technical field
The utility model belongs to the motor-driven technical field.
Background technology
Screw mandrel has all obtained using widely in many application scenarios as a kind of traditional actuator.Screw mandrel converts rotatablely moving of motor to the linear movement of fore-and-aft direction.The tradition controller adopts H bridge driver drive motors forward and backward, then at the forward and backward terminal sensitive switch of installing, and connects single-chip microcomputer.When screw mandrel moves to end position, touch sensitive switch, single-chip microcomputer detects after this signal, stops motor.There are two potential risks in such design.
The conducting simultaneously of switching tube on the upper and lower brachium pontis is short-circuited;
Under the fortuitous event, control program breaks down, and perhaps sensitive switch breaks down, and stall takes place motor endways, burns out motor.
Summary of the invention
The present invention seeks to fail safe, avoid taking place upper and lower brachium pontis short circuit in order to ensure the electric machine controller of screw mandrel driving mechanism, and danger such as motor rotation blockage.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of electric machine controller of screw mandrel driving mechanism comprises single-chip microcomputer 1, H bridge drive circuit, and current detection circuit drives interlock circuit, normally closed travel switch and normally closed travel switch testing circuit.Described driving interlock circuit comprises that triode Q6 collector electrode connects the gate pole of the switching tube Q3 of brachium pontis down, grounded emitter, and base stage connects single-chip microcomputer 1 jointly by the resistance R 2 and the resistance R 5 of resistance R 4 with driving switch pipe Q1 and switching tube Q4; Triode Q8 collector electrode connects the gate pole of the switching tube Q4 of brachium pontis down, grounded emitter, and base stage connects single-chip microcomputer 1 jointly by the resistance R 1 and the resistance R 6 of resistance R 3 with driving switch pipe Q2 and switching tube Q3.Described normally closed travel switch comprises that normally closed travel switch S1 is connected between switching tube Q3 and the ground, when screw mandrel moves forward to terminal position, touches normally closed travel switch S1 and makes its disconnection, and motor 2 stops voluntarily; Normally closed travel switch S2 is connected between switching tube Q4 and the ground, when screw mandrel moves rearwards to terminal position, touches normally closed travel switch S2 and makes its disconnection, and motor 2 stops voluntarily.Described normally closed travel switch testing circuit comprises, triode Q9 is the positive-negative-positive triode, and its base stage connects normally closed travel switch S1 and switching tube Q3 by resistance R 12, and emitter connects power supply VCC, collector electrode connects single-chip microcomputer 1 and resistance R 11, resistance R 11 other end ground connection; Triode Q10 is the positive-negative-positive triode, and its base stage connects normally closed travel switch S2 and switching tube Q4 by resistance R 14, and emitter connects power supply VCC, and collector electrode connects single-chip microcomputer 1 and resistance R 13, resistance R 13 other end ground connection.
The beneficial effects of the utility model mainly show: 1, circuit structure is simple, and cost is low; 2, safe and reliable, effectively protect motor and screw mandrel.
Description of drawings
Fig. 1 is the schematic diagram of the electric machine controller of screw mandrel driving mechanism.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 1, a kind of electric machine controller of screw mandrel driving mechanism comprises single-chip microcomputer 1, H bridge drive circuit, and current detection circuit drives interlock circuit, normally closed travel switch and normally closed travel switch testing circuit.
Single-chip microcomputer 1 comprises four input/output port IO0, IO1, IO2, IO3 and an analog-to-digital conversion port AD0.
H bridge drive circuit comprises the switching tube Q1 and the switching tube Q2 of bridge, the switching tube Q3 of following bridge and switching tube Q4.Switching tube Q1 drain electrode connects driving power VDC, and gate pole connects resistance R 7 and resistance R 8, resistance R 7 another termination switching tube Q1 drain electrode, and resistance R 8 other ends connect triode Q5 collector electrode, and switching tube Q1 source electrode connects switching tube Q3 drain electrode, and connects motor 2 one ends.Triode Q5 base earth, base stage connect the input/output port IO1 of single-chip microcomputer 1 by resistance R 5.Switching tube Q3 source electrode connects normally closed travel switch S1 and resistance R 12, and gate pole connects the input/output port IO0 of single-chip microcomputer 1 by resistance R 1.Switching tube Q2 drain electrode connects driving power VDC, and gate pole connects resistance R 9 and resistance R 10, resistance R 9 another termination switching tube Q2 drain electrode, and resistance R 10 other ends connect triode Q7 collector electrode, and switching tube Q2 source electrode connects switching tube Q4 drain electrode, and connects motor 2 one ends.Triode Q7 base earth, base stage connect the input/output port IO0 of single-chip microcomputer 1 by resistance R 6.Switching tube Q4 source electrode connects normally closed travel switch S2 and resistance R 14, and gate pole connects the input/output port IO1 of single-chip microcomputer 1 by resistance R 2.
Current detection circuit comprises flow measurement resistance R 15, one end ground connection, and the other end connects normally closed travel switch S1 and normally closed travel switch S2, and connects the analog-to-digital conversion port AD0 of single-chip microcomputer 1.
The driving interlock circuit comprises that triode Q6 collector electrode connects the gate pole of the switching tube Q3 of brachium pontis down, grounded emitter, and base stage connects single-chip microcomputer 1 jointly by the resistance R 2 and the resistance R 5 of resistance R 4 with driving switch pipe Q1 and switching tube Q4.Like this, when the switch Q1 of last brachium pontis conducting, triode Q6 drags down switching tube Q3 gate pole, prevents upper and lower brachium pontis short circuit.Triode Q8 collector electrode connects the gate pole of the switching tube Q4 of brachium pontis down, grounded emitter, and base stage connects single-chip microcomputer 1 jointly by the resistance R 1 and the resistance R 6 of resistance R 3 with driving switch pipe Q2 and switching tube Q3.Like this, when the switch Q2 of last brachium pontis conducting, triode Q8 drags down switching tube Q4 gate pole, prevents upper and lower brachium pontis short circuit.
Normally closed travel switch comprises that normally closed travel switch S1 is connected between switching tube Q3 and the ground, when screw mandrel moves forward to terminal position, touches normally closed travel switch S1 and makes its disconnection, and motor 2 stops voluntarily.Normally closed travel switch S2 is connected between switching tube Q4 and the ground, when screw mandrel moves rearwards to terminal position, touches normally closed travel switch S2 and makes its disconnection, and motor 2 stops voluntarily.
Normally closed travel switch testing circuit comprises, triode Q9 is the positive-negative-positive triode, and its base stage connects normally closed travel switch S1 and switching tube Q3 by resistance R 12, and emitter connects power supply VCC, collector electrode connects the input/output port IO2 and the resistance R 11 of single-chip microcomputer 1, resistance R 11 other end ground connection.Triode Q10 is the positive-negative-positive triode, and its base stage connects normally closed travel switch S2 and switching tube Q4 by resistance R 14, and emitter connects power supply VCC, and collector electrode connects the input/output port IO3 and the resistance R 13 of single-chip microcomputer 1, resistance R 13 other end ground connection.
Screw mandrel is after preceding (back) end disconnects normally closed travel switch S1 (S2), and motor stops, and single-chip microcomputer 1 detects cut-off signal by normally closed travel switch testing circuit, can carry out control corresponding.
Claims (1)
- The electric machine controller of [claim 1] a kind of screw mandrel driving mechanism, comprise single-chip microcomputer (1), H bridge drive circuit, current detection circuit drives interlock circuit, normally closed travel switch and normally closed travel switch testing circuit, it is characterized in that: described driving interlock circuit comprises that triode Q6 collector electrode connects the gate pole of the switching tube Q3 of brachium pontis down, grounded emitter, base stage connects single-chip microcomputer (1) jointly by the resistance R 2 and the resistance R 5 of resistance R 4 with driving switch pipe Q1 and switching tube Q4; Triode Q8 collector electrode connects the gate pole of the switching tube Q4 of brachium pontis down, grounded emitter, and base stage connects single-chip microcomputer (1) jointly by the resistance R 1 and the resistance R 6 of resistance R 3 with driving switch pipe Q2 and switching tube Q3;Described normally closed travel switch comprises that normally closed travel switch S1 is connected between switching tube Q3 and the ground, when screw mandrel moves forward to terminal position, touches normally closed travel switch S1 and makes its disconnection, and motor (2) stops voluntarily; Normally closed travel switch S2 is connected between switching tube Q4 and the ground, when screw mandrel moves rearwards to terminal position, touches normally closed travel switch S2 and makes its disconnection, and motor (2) stops voluntarily;Described normally closed travel switch testing circuit comprises, triode Q9 is the positive-negative-positive triode, and its base stage connects normally closed travel switch S1 and switching tube Q3 by resistance R 12, and emitter connects power supply VCC, collector electrode connects single-chip microcomputer (1) and resistance R 11, resistance R 11 other end ground connection; Triode Q10 is the positive-negative-positive triode, and its base stage connects normally closed travel switch S2 and switching tube Q4 by resistance R 14, and emitter connects power supply VCC, and collector electrode connects single-chip microcomputer (1) and resistance R 13, resistance R 13 other end ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203023611U CN201307840Y (en) | 2008-10-08 | 2008-10-08 | Electric motor controller of screw mandrel drive mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203023611U CN201307840Y (en) | 2008-10-08 | 2008-10-08 | Electric motor controller of screw mandrel drive mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201307840Y true CN201307840Y (en) | 2009-09-09 |
Family
ID=41100306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008203023611U Expired - Fee Related CN201307840Y (en) | 2008-10-08 | 2008-10-08 | Electric motor controller of screw mandrel drive mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201307840Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973174A (en) * | 2013-01-31 | 2014-08-06 | 奇鋐科技股份有限公司 | Coil driving circuit |
| CN105890559A (en) * | 2016-06-29 | 2016-08-24 | 爱佩仪中测（成都）精密仪器有限公司 | Counterweight structure of post coordinate measuring instrument |
| CN105953759A (en) * | 2016-06-29 | 2016-09-21 | 爱佩仪中测（成都）精密仪器有限公司 | Horizontal counterweight instrument used for polar coordinate measurement |
-
2008
- 2008-10-08 CN CNU2008203023611U patent/CN201307840Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103973174A (en) * | 2013-01-31 | 2014-08-06 | 奇鋐科技股份有限公司 | Coil driving circuit |
| CN105890559A (en) * | 2016-06-29 | 2016-08-24 | 爱佩仪中测（成都）精密仪器有限公司 | Counterweight structure of post coordinate measuring instrument |
| CN105953759A (en) * | 2016-06-29 | 2016-09-21 | 爱佩仪中测（成都）精密仪器有限公司 | Horizontal counterweight instrument used for polar coordinate measurement |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090909 Termination date: 20101008 |