CN208571584U - A kind of self study gate operator control circuit - Google Patents

Abstract

The utility model discloses a kind of self study gate operator control circuits, including PWM pulse-width modulation circuit, motor driving controling circuit, RC filter circuit and single-chip microcontroller analog to digital conversion circuit.The utility model solves of the existing technology when external cabling short circuit or electric motor short circuit, the problem of by the driving tube and internal circuit that directly damage driving motor, a kind of self study gate operator control circuit is provided, it can effectively solve when applying: when external cabling short circuit or electric motor short circuit, directly damage the driving tube of driving motor and the defect of internal circuit；People is met in door rotation process to push away, be obstructed or when mechanical breakdown leads to motor rotation blockage, current of electric increase causes the defect of driving tube and internal circuit damage in circuit；When people pushes, is obstructed in door rotation process, motor high current, high-torque output, reduction gearing bears high-torque for a long time to be caused to use service life reduction, and prolonged delays lead to the defect that the motor feels hot damages.

Description

A kind of self study gate operator control circuit

Technical field

The utility model relates to switch gates, and in particular to a kind of self study gate operator control circuit.

Background technique

With the development of intelligent building and automation access control system, vertical hinged door is automatically switched door system in each residential quarters And office space is more and more widely used, such as at present quotient newly developed live cell pedestrian and non-motor vehicle channel it is big Vertical hinged door automatic switch door system it has been respectively mounted, when owner is when holding close, vertical hinged door can be automatically opened, and owner leaves more Afterwards, vertical hinged door can be automatically closed again.Currently, vertical hinged door gate power operator mostly uses optoelectronic switch to detect its switch gate greatly The driving method of restraining position, switch door motor uses fixed voltage mode to drive substantially.

The existing technical characteristic using optoelectronic switch detection vertical hinged door restraining position, discovery exists as follows in use Technological deficiency:

1, when external cabling short circuit or electric motor short circuit, the driving tube and internal circuit of driving motor will directly be damaged；

If 2, meeting people in door rotation process to push away, be obstructed or when mechanical breakdown leads to motor rotation blockage, current of electric can increase, hold Easily cause the driving tube in circuit and internal circuit damage.

Utility model content

The utility model solves of the existing technology when external cabling short circuit or when electric motor short circuit, will directly damage drive The problem of driving tube and internal circuit of dynamic motor, a kind of self study gate operator control circuit is provided, applies Shi Nengyou The solution of effect: when a, external cabling short circuit or electric motor short circuit, directly the driving tube of damage driving motor and internal circuit is scarce It falls into；B, people is met in door rotation process to push away, be obstructed or when mechanical breakdown leads to motor rotation blockage, current of electric increase causes to drive in circuit The defect of dynamic pipe and internal circuit damage；C, when people pushes, is obstructed in door rotation process, motor high current, high-torque output subtract Fast gear bears high-torque for a long time to be caused to use service life reduction, and prolonged delays lead to the defect that the motor feels hot damages.

The utility model is achieved through the following technical solutions:

A kind of self study gate operator control circuit, including PWM pulse-width modulation circuit, motor driving controling circuit, RC filter Wave circuit and single-chip microcontroller analog to digital conversion circuit, wherein motor driving controling circuit include power input V, motor M, metal-oxide-semiconductor M1, The drain electrode of the drain electrode connection M2 of metal-oxide-semiconductor M2, metal-oxide-semiconductor M3 and metal-oxide-semiconductor M4, M1, the drain electrode of the source electrode connection M3 of M1, the source electrode of M2 connect The drain electrode of M4, the source electrode of the source electrode connection M3 of M4 are connect, the anode of motor M is connected between the drain electrode of source electrode and M3 of M1, motor M Cathode be connected between the drain electrode of source electrode and M4 of M2, the grid of M1, the grid of M2, the grid of M3, the grid of M4, motor M Anode and the cathode of motor M connect respectively with PWM pulse-width modulation circuit, power input V is connected to the leakage of M1 to drain with M2 It further include zener diode VS1, zener diode VS2, zener diode VS3, zener diode VS4, filtering electrolysis between pole Capacitor C3, current sense resistor R1, the source electrode of the anode connection M1 of zener diode VS1, the cathode connection of zener diode VS1 The drain electrode of M1, the source electrode of the anode connection M2 of zener diode VS2, the drain electrode of the cathode connection M2 of zener diode VS2, pressure stabilizing The source electrode of the anode connection M3 of diode VS3, the drain electrode of the cathode connection M3 of zener diode VS3, zener diode VS4 is just Pole connects the source electrode of M4, and the anode connection power supply of the drain electrode of the cathode connection M4 of zener diode VS4, electrolytic capacitor filter C3 is defeated Enter V, the cathode ground connection of electrolytic capacitor filter C3, current sense resistor R1 is connected between the source electrode of M3 and ground；RC filter circuit Including resistance R2, capacitor C1 and capacitor C2, the one end resistance R2 connects the source electrode of M3, and the other end connects single-chip microcontroller analog-to-digital conversion electricity Road, the one end capacitor C1 are connected between current sense resistor R1 and single-chip microcontroller analog to digital conversion circuit, other end ground connection, capacitor C2 mono- End is connected between the source electrode of resistance R2 and M3, other end ground connection.

According to Ohm's law, the electric current I* that is flowed through in the voltage U=current sense resistor R1 at the both ends current sense resistor R1 The resistance value R of current sense resistor R1, from formula as can be seen that the voltage at the both ends current sense resistor R1 and current sense resistor R1 In the electric current I flowed through it is directly proportional, the more big then series current detection resistance R1 two of the electric current I flowed through in current sense resistor R1 The voltage at end is higher, this voltage enters single-chip microcontroller analog-digital converter, conversion after the RC filter network composed by C1, R2, C2 For the identifiable digital quantity of single-chip microcontroller analog to digital conversion circuit, single-chip microcontroller analog to digital conversion circuit, which passes through the voltage value detected, to be led to It crosses above-mentioned formula and calculates the current value flowed through in current sense resistor R1.In automatic door opening or door closing procedure, single-chip microcontroller mould Number conversion circuits can the current values of motor in real time driving circuits, the current value that flows through in namely current sense resistor R1, When wiring short circuit occur, people is met in door rotation process pushing away, be obstructed or mechanical breakdown leads to motor rotation blockage or overload, electric current will be big Width rises, this real-time current value is compared by single-chip microcontroller analog to digital conversion circuit with preset maximum operating currenbt value, if Real-time current value is more than to preset current value, then single-chip microcontroller analog to digital conversion circuit output control signal controls PWM pulsewidth modulation Circuit reduces pulse width, driving tube G1, G2, G3, G4 for allowing M1, M2, M3, M4, VS1, VS2, VS3, VS4 to form in unit Interior turn-on time reduces, and rapidly reduces motor drive current, if the pulse width range of decrease is larger when being reduced to the electric current of setting, When reaching preset threshold value, single-chip microcontroller analog to digital conversion circuit breaks output control signal control driving tube G1, G2, G3, G4 It opens, motor power-off, to achieve the purpose that protection.

Self study shutdown position: the rotation of control mainboard starting motor, driving gate are rotated toward shutdown direction after door lifter is powered, Door turn to shutdown position after, door knob to lock pillar stops, motor is in locked rotor condition at this time, when the characteristic of motor is normal operation Electric current is small, stall when electric current will rise rapidly, resistance is in series in motor driving loop, electric current rises the voltage meeting at resistance both ends It increasing (U=I*R), this voltage signal can determine whether the size of loop current by the detection of single-chip microcontroller analog to digital conversion circuit, thus It may determine that whether door closes in place, the angle for position of closing the door learnt into shutdown position as zero degree at this time.

Further, a kind of self study gate operator control circuit, the single-chip microcontroller analog to digital conversion circuit include that modulus turns Parallel operation.

Further, a kind of self study gate operator control circuit, the current sense resistor R1 can be used one or more The mode of a resistor coupled in parallel.

Further, a kind of self study gate operator control circuit, the power input V according to the voltage rating of motor into Row matching.

The utility model compared with prior art, has the following advantages and benefits:

1, when the utility model solves external cabling short circuit or electric motor short circuit, the driving tube of driving motor is directly damaged, with And the defect of internal circuit；

2, the utility model solves to meet people in door rotation process and pushes away, is obstructed or when mechanical breakdown leads to motor rotation blockage, motor Electric current increase causes the defect of driving tube and internal circuit damage in circuit；

3, when people pushes, is obstructed in the utility model solution door rotation process, motor high current, high-torque output are slowed down Tooth bears high-torque for a long time to be caused to use service life reduction, and prolonged delays lead to the defect that the motor feels hot damages.

Detailed description of the invention

Attached drawing described herein is used to provide to further understand the utility model embodiment, constitutes the one of the application Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings:

Fig. 1 is the utility model control circuit schematic diagram.

Specific embodiment

For the purpose of this utility model, technical solution and advantage is more clearly understood, below with reference to embodiment and attached drawing, The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this Utility model is not intended to limit the scope of the present invention.

Embodiment

As shown in Figure 1, a kind of self study gate operator control circuit, including PWM pulse-width modulation circuit, drive and control of electric machine Circuit, RC filter circuit and single-chip microcontroller analog to digital conversion circuit, the single-chip microcontroller analog to digital conversion circuit includes analog-digital converter, In, motor driving controling circuit includes power input V, motor M, metal-oxide-semiconductor M1, metal-oxide-semiconductor M2, metal-oxide-semiconductor M3 and metal-oxide-semiconductor M4, described Power input V is matched according to the voltage rating of motor, the drain electrode of the drain electrode connection M2 of M1, the leakage of the source electrode connection M3 of M1 Pole, the drain electrode of the source electrode connection M4 of M2, the source electrode of the source electrode connection M3 of M4, the anode of motor M are connected to the source electrode and M3 of M1 Between drain electrode, the cathode of motor M is connected between the drain electrode of source electrode and M4 of M2, the grid of M1, the grid of M2, M3 grid, The cathode of the grid of M4, the anode of motor M and motor M is connect with PWM pulse-width modulation circuit respectively, and power input V is connected to M1 Drain electrode and M2 drain electrode between, further include zener diode VS1, zener diode VS2, zener diode VS3, two pole of pressure stabilizing One or more resistance can be used simultaneously in pipe VS4, electrolytic capacitor filter C3, current sense resistor R1, the current sense resistor R1 The mode of connection, the source electrode of the anode connection M1 of zener diode VS1, the drain electrode of the cathode connection M1 of zener diode VS1, pressure stabilizing The source electrode of the anode connection M2 of diode VS2, the drain electrode of the cathode connection M2 of zener diode VS2, zener diode VS3 is just Pole connects the source electrode of M3, the drain electrode of the cathode connection M3 of zener diode VS3, the source of the anode connection M4 of zener diode VS4 Pole, the drain electrode of the cathode connection M4 of zener diode VS4, the anode connection power input V of electrolytic capacitor filter C3, filtering electrolysis The cathode of capacitor C3 is grounded, and current sense resistor R1 is connected between the source electrode of M3 and ground；RC filter circuit includes resistance R2, electricity Hold C1 and capacitor C2, the one end resistance R2 connects the source electrode of M3, and the other end connects single-chip microcontroller analog to digital conversion circuit, and the one end capacitor C1 connects It connects between current sense resistor R1 and single-chip microcontroller analog to digital conversion circuit, other end ground connection, the one end capacitor C2 is connected to resistance R2 Between the source electrode of M3, other end ground connection.

The course of work of the utility model is as follows: M1 and VS1 composition driving tube G1, M2 and VS2 form driving tube G2, M3 and VS3 forms driving tube G3, M4 and VS4 and forms driving tube G4, according to the motor of different capacity, electric current realization resistance value and power Matching；Driving tube G1, G2, G3, G4 can according to different powers of motor, electric current, voltage select field-effect tube, triode or IGBT.Single-chip microcontroller analog to digital conversion circuit output control signal controls PWM pulse-width modulation circuit when rotating forward, controls driving tube G1, G4 Pwm control signal intermittent conduction is followed, electric current flows through driving tube G1, motor, driving tube G4, current sense resistor from power supply R1, motor rotate forward；Single-chip microcontroller analog to digital conversion circuit output control signal controls PWM pulse-width modulation circuit, control driving when reversion Pipe G2, G3 follow pwm control signal intermittent conduction, and electric current flows through driving tube G2, motor, driving tube G3, electric current inspection from power supply Measuring resistance R1, motor reversal；Motor rotation drives driving gear, driven gear, drive shaft turns, and torque is exported from drive shaft, Power is transferred to door by connecting rod, to realize enabling/shutdown.

The process of self study shutdown position: the rotation of control mainboard starting motor, the past shutdown side of driving gate after door lifter is powered To rotation, door turn to shutdown position after, door knob to lock pillar stops, motor is in locked rotor condition at this time, the characteristic of motor is just Often electric current is small when operating, stall when electric current will rise rapidly, resistance is in series in motor driving loop, electric current rises resistance both ends Voltage can increase (U=I*R), this voltage signal can determine whether the big of loop current by the detection of single-chip microcontroller analog to digital conversion circuit It is small, so as to judge whether door closes in place, the angle for position of closing the door is learnt into shutdown position as zero degree at this time.

Above-described specific embodiment, to the purpose of this utility model, technical scheme and beneficial effects carried out into One step is described in detail, it should be understood that being not used to limit the foregoing is merely specific embodiment of the present utility model Determine the protection scope of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced It changes, improve, should be included within the scope of protection of this utility model.

Claims (4)

1. a kind of self study gate operator control circuit, which is characterized in that including PWM pulse-width modulation circuit, drive and control of electric machine Circuit, RC filter circuit and single-chip microcontroller analog to digital conversion circuit, wherein motor driving controling circuit include power input V, motor M, The drain electrode of the drain electrode connection M2 of metal-oxide-semiconductor M1, metal-oxide-semiconductor M2, metal-oxide-semiconductor M3 and metal-oxide-semiconductor M4, M1, the drain electrode of the source electrode connection M3 of M1, M2 Source electrode connection M4 drain electrode, M4 source electrode connection M3 source electrode, the anode of motor M be connected to the source electrode and M3 of M1 drain electrode it Between, the cathode of motor M is connected between the drain electrode of source electrode and M4 of M2, the grid of M1, the grid of M2, the grid of M3, M4 grid The cathode of pole, the anode of motor M and motor M is connect with PWM pulse-width modulation circuit respectively, and power input V is connected to the drain electrode of M1 Between the drain electrode of M2, further include zener diode VS1, zener diode VS2, zener diode VS3, zener diode VS4, Electrolytic capacitor filter C3, current sense resistor R1, the source electrode of the anode connection M1 of zener diode VS1, zener diode VS1's Cathode connects the drain electrode of M1, the source electrode of the anode connection M2 of zener diode VS2, and the cathode of zener diode VS2 connects M2's Drain electrode, the source electrode of the anode connection M3 of zener diode VS3, the drain electrode of the cathode connection M3 of zener diode VS3, two pole of pressure stabilizing The source electrode of the anode connection M4 of pipe VS4, the drain electrode of the cathode connection M4 of zener diode VS4, the anode of electrolytic capacitor filter C3 Power input V, the cathode ground connection of electrolytic capacitor filter C3 are connected, current sense resistor R1 is connected between the source electrode of M3 and ground； RC filter circuit includes resistance R2, capacitor C1 and capacitor C2, and the one end resistance R2 connects the source electrode of M3, and the other end connects single-chip microcontroller mould Number conversion circuit, the one end capacitor C1 are connected between current sense resistor R1 and single-chip microcontroller analog to digital conversion circuit, other end ground connection, The one end capacitor C2 is connected between the source electrode of resistance R2 and M3, other end ground connection.

2. a kind of self study gate operator control circuit according to claim 1, which is characterized in that the single-chip microcontroller modulus Conversion circuit includes analog-digital converter.

3. a kind of self study gate operator control circuit according to claim 1, which is characterized in that the current detecting electricity The mode of one or more resistor coupled in parallel can be used in resistance R1.

4. a kind of self study gate operator control circuit according to claim 1, which is characterized in that the power input V It is matched according to the voltage rating of motor.