CN203715012U - Input protection circuit of door motor driver - Google Patents
Input protection circuit of door motor driver Download PDFInfo
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- CN203715012U CN203715012U CN201420051394.9U CN201420051394U CN203715012U CN 203715012 U CN203715012 U CN 203715012U CN 201420051394 U CN201420051394 U CN 201420051394U CN 203715012 U CN203715012 U CN 203715012U
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- 238000005070 sampling Methods 0.000 claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims description 22
- 238000001914 filtration Methods 0.000 claims description 15
- 230000000052 comparative effect Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Abstract
The utility model discloses an input protection circuit of a door motor driver. The input protection circuit comprises a power supply input terminal, a rectifier filter circuit, the door motor driver, a voltage sampling circuit, a reference voltage circuit, a comparison circuit and a control circuit, wherein the power supply input terminal is connected with the voltage sampling circuit through the rectifier filter circuit, the voltage sampling circuit and the reference voltage circuit are respectively connected with the comparison circuit, the comparison circuit is connected with the control circuit, and the control circuit is connected with the door motor driver. According to the input protection circuit of the door motor driver, whether input alternating-current voltage exceeds the voltage input range of the door motor driver or not can be judged, and then, the protection on the door motor driver is realized, so that the operation of an elevator is safer and more reliable.
Description
Technical field
The utility model relates to a machine actuator, relates in particular to an input protection circuit for machine actuator.
Background technology
Along with expanding economy, the application of elevator is more and more extensive, but as the carrying tool closely bound up with common people's personal safety, the potential safety hazard that elevator brings is also more and more troubling, although emphasize again and again elevator safety standard, every year because elevator accident causes the event of personal damage still high.Elevator door-motor actuator is the very important component part of elevator device, its Main Function is to drive elevator door to carry out switch motion according to the control command of elevator device, it is the part of user direct contact in elevator device, but data show, the elevator accident causing due to elevator door-motor system fault has accounted for total approximately 3/4ths.Elevator door motor controller reliability requirement is very high; and working environment is comparatively severe; the operating voltage range of normal door machine actuator is 220V ± 20%; but there are some natural causes or human element in the external world sometimes; can cause change of voltage far to surpass this value, as moment surge, artificially access and in 380VAC(door system, have 220V and two kinds of input powers of 380V) etc. situation; all likely cause a machine drive corruption, thereby cause elevator to shut down.
Summary of the invention
The utility model easily causes the defects such as elevator shutdown when too high for the input voltage existing in prior art, and a kind of input protection circuit of new door machine actuator is provided.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The input protection circuit of door machine actuator, comprises power input, current rectifying and wave filtering circuit, door machine actuator, also comprises voltage sampling circuit, for the alternating-current voltage/AC voltage of Real-Time Monitoring input, and exports sampled voltage; Reference voltage circuit, for providing reference voltage; Comparator circuit, for the size of the sampled voltage of comparative voltage sample circuit input and the reference voltage of reference voltage circuit input, and exports control signal; Control circuit, for receiving the control signal of comparator circuit output the opening and closing of control gate machine actuator; Described power input is connected with voltage sampling circuit by current rectifying and wave filtering circuit, described voltage sampling circuit is connected with comparator circuit respectively with reference voltage circuit, described comparator circuit is connected with control circuit, and described control circuit is connected with door machine actuator.
The alternating-current voltage/AC voltage of input becomes vdc after current rectifying and wave filtering circuit rectifying and wave-filtering, after voltage sampling circuit, export again sampled voltage to comparator circuit, reference voltage circuit is also exported a reference voltage to comparator circuit simultaneously, through comparator circuit relatively after, if sampled voltage is greater than reference voltage, comparator circuit output control signal is to control circuit, control circuit will shutoff door machine actuator, thereby avoid over a normal input range for machine actuator, causing a machine drive corruption because of the alternating-current voltage/AC voltage of input, and then cause elevator to shut down; If sampled voltage is less than reference voltage; comparator circuit output control signal is to control circuit; control circuit will be connected a machine actuator; a machine actuator is normally worked; by above circuit; realize the judgement to input voltage, and then realized the protection of opposite house machine actuator, more safe and reliable while making elevator operation.
As preferably; the input protection circuit of door machine actuator described above; described voltage sampling circuit comprises resistance R 3, resistance R 4, resistance R 5, capacitor C 4; described current rectifying and wave filtering circuit is connected with comparator circuit by resistance R 5, resistance R 4; the a end of described resistance R 4 is connected with ground terminal GND by resistance R 3, and described capacitor C 4 is parallel to the two ends of resistance R 3.Resistance R 3, resistance R 4, resistance R 5 form bleeder circuit, can carry out Real-Time Monitoring to outside input voltage, and capacitor C 4 can play the effect of stablizing the voltage after dividing potential drop.
As preferably, the input protection circuit of door machine actuator described above, described reference voltage circuit comprises resistance R 6, resistance R 7, resistance R 8, reference voltage source chip U1, capacitor C 5, the b end of described reference voltage source chip U1 is connected with comparator circuit, described resistance R 7 is series between the b end and c end of reference voltage source chip U1, described resistance R 8 is series between the c end and d end of reference voltage source chip U1, described capacitor C 5 is series between the b end and d end of reference voltage source chip U1, the d end of described reference voltage source chip U1 is connected with ground terminal GND, the b end of described reference voltage source chip U1 is connected with power supply VCC by resistance R 6.Resistance R 6 is current-limiting resistance, play the effect of current limliting, capacitor C 5 can play the effect of voltage stabilizing, resistance R 7 and resistance R 8 form bleeder circuit, and the voltage of the c end of the voltage after dividing potential drop and reference voltage source chip U1 compares, and make b end and the conducting of d end of reference voltage source chip U1, thereby output reference voltage is to comparator circuit, as required, the resistance of adjustable resistance R7 and resistance R 8, thereby the size of the reference voltage of adjustment reference voltage source chip U1 output.
As preferably; the input protection circuit of door machine actuator described above; described comparator circuit comprises comparator U2, resistance R 11; the normal phase input end of described comparator U2 is connected with reference voltage circuit; the inverting input of described comparator U2 is connected with voltage sampling circuit; the mouth of described comparator U2 is connected with control circuit, and described resistance R 11 is series between the normal phase input end and mouth of comparator U2.
Resistance R 11 has realized the hysteresis comparator function of amplifier, make comparator circuit more stable, comparator U2 is for the size of the sampled voltage of comparative voltage sample circuit input and the reference voltage of reference voltage circuit input, if sampled voltage is greater than reference voltage, show that the alternating-current voltage/AC voltage of power input input has surpassed the input voltage range of door machine actuator, the mouth output low level of comparator U2 does not also work a machine actuator by control circuit; If sampled voltage is less than reference voltage, show that the alternating-current voltage/AC voltage of power input input is in the input voltage range of door machine actuator, the now mouth of comparator U2 output high-impedance state, and be communicated with power supply normal work by control circuit control gate machine actuator.
As preferably, the input protection circuit of door machine actuator described above, described control circuit comprises resistance R 12, capacitor C 6, aerotron Q1, diode D5, relay R L, described comparator circuit is connected with the B utmost point of aerotron Q1, the E utmost point of described aerotron Q1 is connected with ground terminal GND, the B utmost point of described aerotron Q1 is connected with power supply VCC by resistance R 12, described capacitor C 6 is series between the B utmost point and the E utmost point of aerotron Q1, the C utmost point of described aerotron Q1 is connected with power supply VCC by diode D5, described relay R L is parallel to the two ends of diode D5, the e end of described relay R L is connected with L line, the f end of described relay R L is put sky, the g end of described relay R L is connected with door machine actuator.
Capacitor C 6 is as filter capacitor, interference on can filtered signal, diode D5 is as flywheel diode, can the not sensed voltage breakdown of protective relay RL or burn, and aerotron Q1 is for receiving the control signal from comparator circuit output, if comparator circuit output low level, not conducting of aerotron Q1, makes relay R L no power, and the K switch 1 of relay R L is positioned at f end all the time, and then a machine actuator is not worked, avoid the excessive door machine actuator that damages of alternating-current voltage/AC voltage because of input; If comparator circuit output high-impedance state, aerotron Q1 conducting, and then make relay R L energising, the K switch 1 of relay R L is held to g by adhesive, thereby makes a machine actuator energising normal work.
Accompanying drawing explanation
Fig. 1 is the schematic circuit diagram of the input protection circuit of the utility model door machine actuator.
The specific embodiment
Below in conjunction with accompanying drawing 1 and the specific embodiment, the utility model is described in further detail, but they are not to restriction of the present utility model:
embodiment 1
As shown in Figure 1, the input protection circuit of door machine actuator, comprises power input 1, current rectifying and wave filtering circuit 2, door machine actuator 3, also comprises voltage sampling circuit 5, for the alternating-current voltage/AC voltage of Real-Time Monitoring input, and exports sampled voltage; Reference voltage circuit 4, for providing reference voltage; Comparator circuit 6, for the size of the sampled voltage of comparative voltage sample circuit 5 inputs and the reference voltage of reference voltage circuit 4 inputs, and exports control signal; Control circuit 7, for receiving the control signal of comparator circuit 6 outputs the opening and closing of control gate machine actuator 3; Described power input 1 is connected with voltage sampling circuit 5 by current rectifying and wave filtering circuit 2, described voltage sampling circuit 5 is connected with comparator circuit 6 respectively with reference voltage circuit 4, described comparator circuit 6 is connected with control circuit 7, and described control circuit 7 is connected with door machine actuator 3.
During work, the alternating-current voltage/AC voltage of input becomes vdc after current rectifying and wave filtering circuit 2 rectifying and wave-filterings, after obtaining sampled voltage, voltage sampling circuit 5 is input to again comparator circuit 6, reference voltage circuit 4 is also exported a reference voltage to comparator circuit 6 simultaneously, through comparator circuit 6 relatively after, if sampled voltage is greater than reference voltage, illustrate that the alternating-current voltage/AC voltage of input is greater than the normal voltage input range of a machine actuator 3, comparator circuit 6 output control signals are to control circuit 7, control circuit 7 will shutoff door machine actuator 3, thereby avoid over a normal input range for machine actuator 3, causing a machine actuator 3 to damage because of the alternating-current voltage/AC voltage of input, and then cause elevator to shut down, if sampled voltage is less than reference voltage, illustrate that the alternating-current voltage/AC voltage of input is in the normal voltage input range of door machine actuator 3, comparator circuit 6 output control signals are to control circuit 7, and control circuit 7 will be connected a machine actuator 3, and a machine actuator 3 is normally worked.
As preferably, described voltage sampling circuit 5 comprises resistance R 3, resistance R 4, resistance R 5, capacitor C 4, described current rectifying and wave filtering circuit 2 is connected with comparator circuit 6 by resistance R 5, resistance R 4, the a end of described resistance R 4 is connected with ground terminal GND by resistance R 3, and described capacitor C 4 is parallel to the two ends of resistance R 3.The alternating-current voltage/AC voltage of power input 1 input becomes vdc after current rectifying and wave filtering circuit 2 rectifying and wave-filterings, and vdc obtains sampled voltage again after resistance R 3, resistance R 4, resistance R 5 dividing potential drops, and exports to comparator circuit 6.
As preferably, described reference voltage circuit 4 comprises resistance R 6, resistance R 7, resistance R 8, reference voltage source chip U1, capacitor C 5, the b end of described reference voltage source chip U1 is connected with comparator circuit 6, described resistance R 7 is series between the b end and c end of reference voltage source chip U1, described resistance R 8 is series between the c end and d end of reference voltage source chip U1, described capacitor C 5 is series between the b end and d end of reference voltage source chip U1, the d end of described reference voltage source chip U1 is connected with ground terminal GND, the b end of described reference voltage source chip U1 is connected with power supply VCC by resistance R 6.
Resistance R 7, resistance R 8 forms bleeder circuit and carries out after dividing potential drop, make c end surpass the conducting-state voltage of reference voltage source chip U1, thereby make b end and the conducting of d end of reference voltage source chip U1, and then drag down the voltage of c end, after the voltage of the c end conducting-state voltage lower than reference voltage source chip U1, b end and the d of reference voltage source chip U1 hold no longer conducting, now reference voltage source chip U1 carries out energy storage, and the voltage of c end raises again, repeatedly several times after c terminal voltage finally maintain the conducting-state voltage of reference voltage source chip U1, and the b of reference voltage source chip U1 end output reference voltage compares to comparator circuit 6.
As preferably, described comparator circuit 6 comprises comparator U2, resistance R 11, the normal phase input end of described comparator U2 is connected with reference voltage circuit 4, the inverting input of described comparator U2 is connected with voltage sampling circuit 5, the mouth of described comparator U2 is connected with control circuit 7, and described resistance R 11 is series between the normal phase input end and mouth of comparator U2.
During work, the reference voltage of reference voltage circuit 4 outputs is input to the normal phase input end of comparator U2, the sampled voltage of voltage sampling circuit 5 outputs is input to the inverting input of comparator U2, comparator U2 is after relatively, if sampled voltage is greater than reference voltage, comparator U2 output low level, make control circuit 7 shutoff door machine actuators 3, if sampled voltage is less than reference voltage, comparator U2 exports high-impedance state, make control circuit 7 connect door machine actuator 3 and power supply, a machine actuator 3 is normally worked.
As preferably, described control circuit 7 comprises resistance R 12, capacitor C 6, aerotron Q1, diode D5, relay R L, described comparator circuit 6 is connected with the B utmost point of aerotron Q1, the E utmost point of described aerotron Q1 is connected with ground terminal GND, the B utmost point of described aerotron Q1 is connected with power supply VCC by resistance R 12, described capacitor C 6 is series between the B utmost point and the E utmost point of aerotron Q1, the C utmost point of described aerotron Q1 is connected with power supply VCC by diode D5, described relay R L is parallel to the two ends of diode D5, the e end of described relay R L is connected with L line, the f end of described relay R L is put sky, the g end of described relay R L is connected with door machine actuator 3.
When comparator circuit 6 output low levels arrive the B utmost point of aerotron Q1, not conducting of aerotron Q1, thereby make the relay R L work of cannot switching on, the K switch 1 of relay R L is positioned at f end all the time, and then make a machine actuator 3 cannot be communicated with power supply, avoid the excessive door machine actuator 3 that damages of alternating-current voltage/AC voltage because of input; When comparator circuit 6 output high-impedance states are during to the B utmost point of aerotron Q1, owing to drawing effect in resistance R 12, make aerotron Q1 conducting, thereby make relay R L energising work, the K switch 1 of relay R L is held to g by adhesive, and now door machine actuator 3 switches on power and starts normal work.
In a word, the foregoing is only preferred embodiment of the present utility model, the equalization that all scopes of applying for a patent according to the utility model are done changes and modifies, and all should belong to covering scope of the present utility model.
Claims (5)
1. the input protection circuit of a machine actuator, comprise power input (1), current rectifying and wave filtering circuit (2), door machine actuator (3), it is characterized in that: also comprise voltage sampling circuit (5), for the alternating-current voltage/AC voltage of Real-Time Monitoring input, and export sampled voltage; Reference voltage circuit (4), for providing reference voltage; Comparator circuit (6), for the size of the sampled voltage of comparative voltage sample circuit (5) input and the reference voltage of reference voltage circuit (4) input, and exports control signal; Control circuit (7), for receiving the control signal of comparator circuit (6) output the opening and closing of control gate machine actuator (3); Described power input (1) is connected with voltage sampling circuit (5) by current rectifying and wave filtering circuit (2), described voltage sampling circuit (5) is connected with comparator circuit (6) respectively with reference voltage circuit (4), described comparator circuit (6) is connected with control circuit (7), and described control circuit (7) is connected with door machine actuator (3).
2. the input protection circuit of according to claim 1 machine actuator; it is characterized in that: described voltage sampling circuit (5) comprises resistance R 3, resistance R 4, resistance R 5, capacitor C 4; described current rectifying and wave filtering circuit (2) is connected with comparator circuit (6) by resistance R 5, resistance R 4; the a end of described resistance R 4 is connected with ground terminal GND by resistance R 3, and described capacitor C 4 is parallel to the two ends of resistance R 3.
3. the input protection circuit of according to claim 1 machine actuator, it is characterized in that: described reference voltage circuit (4) comprises resistance R 6, resistance R 7, resistance R 8, reference voltage source chip U1, capacitor C 5, the b end of described reference voltage source chip U1 is connected with comparator circuit (6), described resistance R 7 is series between the b end and c end of reference voltage source chip U1, described resistance R 8 is series between the c end and d end of reference voltage source chip U1, described capacitor C 5 is series between the b end and d end of reference voltage source chip U1, the d end of described reference voltage source chip U1 is connected with ground terminal GND, the b end of described reference voltage source chip U1 is connected with power supply VCC by resistance R 6.
4. the input protection circuit of according to claim 1 machine actuator; it is characterized in that: described comparator circuit (6) comprises comparator U2, resistance R 11; the normal phase input end of described comparator U2 is connected with reference voltage circuit (4); the inverting input of described comparator U2 is connected with voltage sampling circuit (5); the mouth of described comparator U2 is connected with control circuit (7), and described resistance R 11 is series between the normal phase input end and mouth of comparator U2.
5. the input protection circuit of according to claim 1 machine actuator, it is characterized in that: described control circuit (7) comprises resistance R 12, capacitor C 6, aerotron Q1, diode D5, relay R L, described comparator circuit (6) is connected with the B utmost point of aerotron Q1, the E utmost point of described aerotron Q1 is connected with ground terminal GND, the B utmost point of described aerotron Q1 is connected with power supply VCC by resistance R 12, described capacitor C 6 is series between the B utmost point and the E utmost point of aerotron Q1, the C utmost point of described aerotron Q1 is connected with power supply VCC by diode D5, described relay R L is parallel to the two ends of diode D5, the e end of described relay R L is connected with L line, the f end of described relay R L is put sky, the g end of described relay R L is connected with door machine actuator (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420051394.9U CN203715012U (en) | 2014-01-27 | 2014-01-27 | Input protection circuit of door motor driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420051394.9U CN203715012U (en) | 2014-01-27 | 2014-01-27 | Input protection circuit of door motor driver |
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| Publication Number | Publication Date |
|---|---|
| CN203715012U true CN203715012U (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420051394.9U Expired - Lifetime CN203715012U (en) | 2014-01-27 | 2014-01-27 | Input protection circuit of door motor driver |
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| Country | Link |
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| CN (1) | CN203715012U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353816A (en) * | 2014-08-20 | 2016-02-24 | 联想(北京)有限公司 | Method for stabilizing power supply, power supply and electronic device |
| CN109502434A (en) * | 2018-11-16 | 2019-03-22 | 杭州兆鼎科技实业有限公司 | A kind of Fault Locating Method and its elevator device |
-
2014
- 2014-01-27 CN CN201420051394.9U patent/CN203715012U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105353816A (en) * | 2014-08-20 | 2016-02-24 | 联想(北京)有限公司 | Method for stabilizing power supply, power supply and electronic device |
| CN109502434A (en) * | 2018-11-16 | 2019-03-22 | 杭州兆鼎科技实业有限公司 | A kind of Fault Locating Method and its elevator device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171020 Address after: 311305, 108, Pioneer Street, Qingshan Lake Street, Hangzhou, Zhejiang, Ling'an Patentee after: HANGZHOU ZHAODING TECHNOLOGY INDUSTRIAL CO.,LTD. Address before: 310000 building 3, building 303, Wensanlu Road 408, Xihu District, Zhejiang, Hangzhou Patentee before: HANGZHOU RIDING CONTROL TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |
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| CX01 | Expiry of patent term |