# US 12,000,197 B2 · Automatic door operator and method for driving the same

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- Number: US 12,000,197 B2
- Document ID: US12000197B2
- Status: Granted
- Kind: B2
- Application number: 17/441,553
- Filed: 2020-03-27
- Published: 2022-06-30
- Granted: 2024-06-04
- Earliest claimed: 2019-04-03
- Assignees: Assa Abloy Entrance Systems AB
- Applicants: Assa Abloy Entrance Systems AB
- Inventors: Jingfeng Zhang; Jun Zhao
- Web page: https://patentgrep.com/patent/US12000197B2

## CPC

- E05F 15/70: with automatic actuation
- H02P 1/02: Details {of starting control}
- E05F 15/603: using rotary electromotors
- G01D 5/24471: {Error correction}
- H02M 3/155: using semiconductor devices only
- H02M 3/158: including plural semiconductor devices as final control devices for a single load
- H02P 3/02: Details {of stopping control}
- E05Y 2201/43: Motors
- E05Y 2400/30: of motors
- E05Y 2400/452: for saving energy, e.g. sleep or wake-up
- E05Y 2900/132: Doors
- E05F: DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- H02P: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P)
- E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF

## Abstract

An automatic door operator is disclosed, including a main control circuit, an actuating unit configured to output torque, and a transmission device. The main control circuit controls operation of the actuating unit to drive a movement of a door leaf through the transmission device. The automatic door operator further includes: a DC power supply configured to supply a DC voltage VDD to the main control circuit; and a standby power switching circuit, connected in series between the DC power supply and the main control circuit, and configured to acquire a switching signal and conduct, or cut off after a preset time period Δt has been elapsed, electric current between the DC power supply and the main control circuit according to the switch signal. A method for driving the automatic door operator is also disclosed. The present disclosure realizes the purpose of saving energy and electricity of the automatic door operator, while increasing the lifetime of the main control circuit.

## Claims

### Claim 1

An automatic door operator, comprising a main control circuit, an actuating unit configured to output torque, and a transmission device, the main control circuit controlling operation of the actuating unit to drive a movement of a door leaf through the transmission device, the automatic door operator further comprising:
a DC power supply, configured to supply a DC voltage VDD to the main control circuit; and
a standby power switching circuit, connected in series between the DC power supply and the main control circuit, and configured to acquire a switching signal and conduct, or cut off after a preset time period Δt has been elapsed, electric current between the DC power supply and the main control circuit, according to the switch signal, wherein during the preset time period At following the acquired switching signal the actuating unit outputs torque to move the door leaf through a door opening operation or a door closing operation.

### Claim 2

An automatic door operator, comprising a main control circuit, an actuating unit configured to output torque, and a transmission device, the main control circuit controlling operation of the actuating unit to drive a movement of a door leaf through the transmission device, the automatic door operator further comprising:
a DC power supply, configured to supply a DC voltage VDD to the main control circuit and
a standby power switching circuit, connected in series between the DC power supply and the main control circuit, and configured to acquire a switching signal and conduct, or cut off after a preset time period At has been elapsed, electric current between the DC power supply and the main control circuit, according to the switch signal, wherein the standby power switching circuit comprises:
a signal source sub-circuit, configured to acquire the switching signal and output a trigger level signal Vtrigger according to the switching signal, the trigger level signal Vtrigger comprising a first level signal and a second level signal;
a delay sub-circuit, configured to receive the trigger level signal Vtrigger output from the signal source sub-circuit and output a delay level signal Vdelay according to the trigger level signal Vtrigger, wherein the delay level signal Vdelay is the first level signal, when the trigger level signal Vtrigger is the first level signal, and the delay level signal Vdelay turns from the first level signal to the second level signal after the preset time period At has been elapsed, when the trigger level signal Vtrigger turns from the first level signal to the second level signal;
a control signal sub-circuit configured to receive the delay level signal Vdelay output from the delay sub-circuit and output a control level signal Vcontrol according to the delay level signal Vdelay; and
a DC switching sub-circuit, comprising a first DC voltage input terminal connected to the DC power supply, and a DC voltage output terminal connected to the main control circuit, wherein the DC switching sub-circuit configured to receive the control level signal Vcontrol output from the control signal sub-circuit and conduct, or cut off after the preset time period Δt has been elapsed, electric current between the DC power supply and the main control circuit according to the control level signal Vcontrol,
wherein the signal source sub-circuit, the delay sub-circuit, the control signal sub-circuit and the DC switching sub-circuit are connected in series and sequentially.

### Claim 3 (depends on 2)

The automatic door operator according to claim 2, wherein the signal source sub-circuit comprises a signal generator P and a switch SW, a first terminal of the signal generator P is connected to a first terminal of the switch SW and an output terminal of the signal source sub-circuit, and a second terminal of the signal generator P is connected to a second terminal of the switch SW and grounded.

### Claim 4 (depends on 2)

The automatic door operator according to claim 2, wherein the delay sub-circuit comprises a first resistor R1, a first capacitor C1 and a second DC input terminal, a first terminal of the first resistor R1 is connected to a first electrode plate of the first capacitor C1 and an input terminal and an output terminal of the delay sub-circuit, a second terminal of the first resistor R1 is connected to the second DC input terminal, and a second electrode plate of the first capacitor C1 is grounded.

### Claim 5 (depends on 2)

The automatic door operator according to claim 2, wherein the controlling signal sub-circuit comprises a reference voltage input terminal and an operational amplifier comparator, a positive phase input terminal of the operational amplifier comparator is connected to the reference voltage input terminal, a negative input terminal of the operational amplifier comparator is connected to an input terminal of the control signal sub-circuit, and an output terminal of the operational amplifier comparator is connected to an output terminal of the control signal sub-circuit.

### Claim 6 (depends on 2)

The automatic door operator according to claim 2, wherein the DC switching sub-circuit further comprises a first transistor T1 and a second transistor T2, a control terminal of the first transistor T1 is connected to an input terminal of the DC switching sub-circuit, a first terminal of the first transistor T1 is grounded, a second terminal of the first transistor T1 is connected to a control terminal of the second transistor T2, a first terminal of the second transistor T2 is connected to the first DC voltage input terminal, and a second terminal of the second transistor T2 is connected to the DC voltage output terminal.

### Claim 7 (depends on 6)

The automatic door operator according to claim 6, wherein the DC switching sub-circuit further comprises a second resistor R2 and a second capacitor C2, a first terminal of the second resistor R2 is connected to a first electrode plate of the second capacitor C2 and the control terminal of the second transistor T2, and a second terminal of the second resistor R2 is connected to a second electrode plate of the second capacitor C2, the first terminal of the second transistor T2 and the first DC voltage input terminal.

### Claim 8 (depends on 7)

The automatic door operator according to claim 7, wherein the DC switching sub-circuit further comprises a first inductor L1, a second inductor L2 and a third capacitor C3, a first terminal of the first inductor L1 is connected to the second electrode plate of the second capacitor C2, a second terminal of the first inductor L1 is connected to a first electrode plate of the third capacitor C3 and a first terminal of the second inductor L2, a second electrode plate of the third capacitor C3 is grounded, and a second terminal of the second inductor L2 is connected to the first DC voltage input terminal.

### Claim 9 (depends on 6)

The automatic door operator according to claim 6, wherein the first transistor T1 is an N-type field effect transistor, and the second transistor T2 is a P-type field effect transistor.

### Claim 10 (depends on 2)

A method for driving the automatic door operator according to claim 2, comprising:
acquiring the switching signal;
controlling the electrical current between the DC power supply and the main control circuit to be conducted, or cut off after the preset time period Δt has been elapsed, according to the switching signal; and
receiving, by the main control circuit, the DC voltage VDD supplied by the DC power supply, when the electrical current between the DC power supply and the main control circuit is conducted, and controlling operation of the actuating unit to drive the movement of the door leaf through the transmission device.

### Claim 11 (depends on 10)

The method according to claim 10, wherein controlling the electrical current between the DC power supply and the main control circuit to be conducted, or cut off after the preset time period 66 t has been elapsed, according to the switching signal comprises:
determining the trigger level signal Vtrigger according to the switching signal; and
controlling the electrical current between the DC power supply and the main control circuit to be conducted, or cut off after the preset time period Δt has been elapsed, according to the trigger level signal Vtrigger, wherein:
the electrical current between the DC power supply and the main control circuit is conducted when the trigger level signal Vtrigger is the first level signal; and
the electrical current between the DC power supply and the main control circuit is cut off after the preset time period Δt has been elapsed, when the trigger level signal Vtrigger turns from the first level signal to a second level signal.