CN210246635U - Automatic time-delay starting or automatic soft starting system - Google Patents
Automatic time-delay starting or automatic soft starting system Download PDFInfo
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- CN210246635U CN210246635U CN201921027016.6U CN201921027016U CN210246635U CN 210246635 U CN210246635 U CN 210246635U CN 201921027016 U CN201921027016 U CN 201921027016U CN 210246635 U CN210246635 U CN 210246635U
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Abstract
An automatic delay start or automatic soft start system comprises a single chip microcomputer, an input module, a current relay, an output module and a power supply module. The utility model can directly connect the low-voltage DC brush motor into the power supply, after the system detects that the power line is connected into the motor, the system delays for a certain time, automatically switches on a loop or soft start, operates the motor, and after an operator pulls out the connector, the system can repeat automatic delay start or PWM duty ratio automatic soft start when testing again; the utility model discloses changed original must under the condition of outage, connect the motor power cord earlier and be pressing starting switch's operation mode for the circular telegram test becomes more simple and convenient and safety when the motor batch production of mill, has improved production efficiency, and especially when motor mass production, the effect is showing, and control system adopts single chip microcomputer system, and the structure is small and exquisite, and is with low costs.
Description
Technical Field
The utility model belongs to the technical development field of low pressure direct current brush motor, concretely relates to automatic time delay starts or automatic soft start system.
Background
At present, in the production process of a direct current brush motor, the motor generally needs to be electrified and detected, the conventional method is that positive and negative terminals of the motor are connected with a power socket connector firstly, then a starting switch is manually pressed, the motor is electrified and operated, the power socket connector is connected firstly when the motor is tested again, and then a starting button is pressed, sometimes field operators can directly connect the electrified (lower than 36V direct current voltage) power socket connector with the positive and negative terminals of the motor in an inserting mode, and the positive and negative terminals of the motor can be ablated at the starting moment.
In the actual production process, in order to improve the efficiency, the requirement on the beat is high, and meanwhile, the ablation of positive and negative terminals caused by the fact that the motor is electrified and plugged is avoided, so that a device which does not need to press a starting switch is urgently needed in the production field, can be used for stably and automatically conducting a loop for a period of time to enable the motor to operate after the motor is connected with a power supply connector, can be repeatedly and automatically conducted and tested, and can be conveniently connected into various direct current power supplies, however, the direct current power supplies or electrified detection equipment in the current market can be electrified only by pressing the starting switch.
Therefore, an automatic delayed start or automatic soft start system has been devised to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model aims to provide an automatic delay start or automatic soft start system.
In order to achieve the above objects and other related objects, the present invention provides a technical solution: an automatic delayed start or automatic soft start system comprising: the singlechip is used for storing programs for automatically controlling the singlechip and receiving external input signals;
the input module is used for converting a motor power supply voltage signal into a voltage value input signal allowed by the single chip microcomputer, and a sampling point of the input module is arranged in a negative electrode circuit of a motor power supply;
the current relay is arranged in a positive circuit of a motor power supply and used for detecting the current state in the whole loop and providing signals for the single chip microcomputer;
the output module is used for amplifying the output signal of the single chip microcomputer and controlling the on-off of a motor power supply loop, and a point for controlling the on-off of the motor in the output module is arranged in a circuit behind the sampling point of the input module and in front of the negative electrode of the motor power supply;
the power supply module is used for supplying power to the single chip microcomputer, the input module, the output module and the current relay;
the input module and the current relay are connected with an I/O port of the single chip microcomputer, and the single chip microcomputer is electrically connected with the output module.
The preferable technical scheme is as follows: the input module comprises a triode Q14, a pull-up resistor R33 is arranged on a collector of the triode Q14, and a collector of the triode Q14 is connected to a corresponding I/O port of the single chip microcomputer; the input module further comprises a voltage regulator tube D15, the negative electrode of the voltage regulator tube D15 is connected with the sampling point test through a resistor R35, and the negative electrode of the voltage regulator tube D15 is connected with the base electrode of the triode Q14 through a resistor R37.
The preferable technical scheme is as follows: the current relay signal is connected to the middle point of the pull-up resistor connected in series with the resistor R23 and the resistor R28, and the middle point is connected to the corresponding I/O port of the single chip microcomputer.
The preferable technical scheme is as follows: the output module comprises a totem pole drive, the totem pole drive comprises a plurality of resistors, NPN triodes and PNP triodes, the single chip microcomputer is connected with a totem pole drive input end PC1 corresponding to an I/O port, the totem pole drive output end is connected with a grid electrode of an MOS tube Q21 through a resistor R53, a fast switch diode D21 is connected in parallel with the resistor R53, and a point for controlling the on-off of a motor in the output module is connected with two ends of a drain electrode and a source electrode of the MOS tube Q21.
The preferable technical scheme is as follows: the power supply module comprises a resistor, an MOS tube Q11, an MOS tube Q12, an MOS tube Q13, a voltage regulator tube D12, a voltage regulator tube D13, a voltage regulator tube D14, a differential mode inductor L8, a differential mode capacitor C30, a TVS diode D17 and a circuit consisting of two DC-DC chips; the grid voltage of the MOS tube Q11, the MOS tube Q12 and the MOS tube Q13 is provided by a voltage regulator tube D14, a voltage regulator tube D13 and a voltage regulator tube D12, when the TVS diode D17 is conducted, the MOS tube Q11 is in a conducting state, the MOS tube Q13 is in a switching-off state, and the drain and source stages of the MOS tube Q13 are connected to a main loop of the control circuit; the MOS transistor Q12 is connected with the MOS transistor Q13 in series, the source electrode of the MOS transistor Q13 is connected with the source electrode of the MOS transistor Q12, and the drain electrode of the MOS transistor Q12 is connected with the negative electrode of the input voltage of the power supply module.
Because of the application of the technical scheme, compared with the prior art, the utility model the advantage that has is:
the utility model can directly connect the low-voltage DC brush motor into the power supply, after the system detects that the power line is connected into the motor, the system delays for a certain time, automatically switches on a loop or soft start, operates the motor, and after an operator pulls out the connector, the system can repeat automatic delay start or PWM duty ratio automatic soft start when testing again; the utility model discloses changed original must under the condition of outage, connect the motor power cord earlier and be pressing starting switch's operation mode for the circular telegram test becomes more simple and convenient and safety when the motor batch production of mill, has improved production efficiency, and especially when motor mass production, the effect is showing, and control system adopts single chip microcomputer system, and the structure is small and exquisite, and is with low costs.
Drawings
FIG. 1 is a schematic diagram of a part of the structure of a single chip microcomputer.
Fig. 2 is a schematic diagram of an input module.
Fig. 3 is a schematic diagram of an output module.
Fig. 4 is a schematic diagram of a current relay.
Fig. 5 is a schematic diagram of a power module.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
Please refer to fig. 1 to 5. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as the type and size of the components and parts referred to in the present specification are also clear for convenience of description, and are not intended to limit the scope of the present invention, and the changes or adjustments of the relative relationships thereof should be considered as the scope of the present invention without substantial changes in the technical content.
Example (b): as shown in fig. 1 to 5, an automatic delayed start or automatic soft start system includes:
the singlechip is used for storing an automatic control singlechip program, receiving an external input signal, executing a pre-programmed program according to the state of the external input signal, and finally outputting a corresponding signal to switch on and off the motor; the singlechip program is used for finishing a series of actions according to a preset design and realizing the function of automatic control;
the input module is used for converting a motor power supply voltage signal into a voltage value input signal allowed by the single chip microcomputer, has a signal isolation protection function on the single chip microcomputer, and places a sampling point of the input module in a negative pole circuit of a motor power supply;
the current relay is arranged in a positive circuit of a motor power supply and used for detecting the current state in the whole loop and providing signals for the singlechip;
the output module is used for amplifying the output signal of the singlechip to drive executing elements such as an MOS (metal oxide semiconductor) tube, a relay and the like and controlling the on-off of a power supply loop of the motor, and a point for controlling the on-off of the motor in the output module is arranged behind a sampling point of the input module and in a circuit in front of the negative electrode of the power supply of the motor;
the power supply module is used for supplying power to the singlechip, the input module, the output module and the current relay, and has the functions of power supply reverse connection prevention protection, overvoltage protection and the like;
the input module and the current relay are respectively connected to an I/O port of the single chip microcomputer, the single chip microcomputer judges signals of the two input modules, the delayed conduction and disconnection of the output module are controlled, meanwhile, the output module can also output PWM square waves with various duty ratios to achieve the purpose of soft start of the direct current motor, and the specific control principle is as follows: if the signal input by the input module into the singlechip is low level, the output module delays the conduction of the motor power supply circuit or PWM soft start, and if the signal input by the current relay into the singlechip is high level, the output module disconnects the motor power supply circuit to prepare for next power-on test.
Note: the cooperation the utility model discloses a structure picture, single chip microcomputer control procedure can adopt the soft start mode etc. of delay switch volume break-make mode or PWM duty cycle, do not do the detailed description in the aspect of the software, the utility model discloses do not do the restriction to this yet.
The preferred embodiment is: the input module comprises a triode Q14, a pull-up resistor R33 is arranged at the collector of the triode Q14, and the collector of the triode Q14 is connected to the corresponding I/O port of the single chip microcomputer; the input module further comprises a voltage regulator tube D15, the negative electrode of the voltage regulator tube D15 is connected with the sampling point test through a resistor R35, and the negative electrode of the voltage regulator tube D15 is connected with the base electrode of the triode Q14 through a resistor R37.
When the positive pole and the negative pole of the motor are connected with a power supply, the input module sampling point test detects the voltage of the power supply of the motor, the voltage is stabilized at 5V through a circuit consisting of a resistor R35 and a voltage regulator tube D15, the voltage is connected to one side of the base electrode of the circuit consisting of a resistor R37 and a triode Q14, the triode Q14 is in saturated conduction at the moment, the potential of the collector of the triode Q14 is 0V, the single chip microcomputer is in low level corresponding to an I/O port, and similarly, when the positive pole and the negative pole of the motor are not connected with the power supply, no voltage exists at one side of the base electrode of the triode Q14, the triode Q14 is cut off, the potential of the collector of.
The preferred embodiment is: the current relay is used for detecting the current state in a power supply loop of the motor, a detected lead passes through a detection hole of the current relay, the detected lead can be wound around the detection hole of the current relay for a plurality of circles according to the actual situation, when current passes through the lead, the potential of a signal line of the current relay is 0V, when no current passes through the lead, the signal line of the current relay is in a suspended state, the signal of the current relay is connected to the middle point of a pull-up resistor which is formed by connecting a resistor R23 and a resistor R28 in series, the middle point is connected to an I/O port corresponding to the single chip microcomputer, when current passes through the detected lead, the I/O port corresponding to the single chip microcomputer is at a low level, and when no current passes through the detected lead, the I/O port corresponding to the single;
the preferred embodiment is: the output module is used for amplifying the output signal of the singlechip to drive an MOS transistor Q21 or a relay and other execution elements and controlling the on-off of a motor power supply loop, and a point for controlling the on-off of the motor in the output module is arranged in a circuit behind a sampling point test of the input module and in front of the negative electrode of the motor power supply; the output module comprises a totem pole drive, the totem pole drive comprises a plurality of resistors, NPN triodes and PNP triodes, the single chip microcomputer is connected with a totem pole drive input end PC1 corresponding to an I/O port, the totem pole drive output end is connected with a grid electrode of an MOS tube Q21 through a resistor R53, a fast switching diode D21 is connected in parallel with a resistor R53, a fast switching diode D21 is matched with a totem pole drive circuit, voltage caused by a routing inductor and a junction capacitor of the MOS tube Q21 on the grid electrode can be rapidly released, resonance caused during rapid on-off is avoided, the output module has a common low-speed on-off function and a high-frequency on-off function, for a brushed direct current motor, the on-off frequency can reach 17KHZ, PWM duty ratio speed regulation or soft start function can be realized through a program, and when the PWM duty ratio speed regulation is carried out, a freewheeling; the point of the output module for controlling the on-off of the motor is connected with the drain and source ends of the MOS transistor Q21; in addition, the leakage and source of the MOS tube Q21 can also be connected with the relay coil to control the attraction and the disconnection of the relay, and the point of the output module for controlling the on-off of the motor is connected with the normally open contact of the relay to turn on or off the motor.
The preferred embodiment is: the power supply module comprises a resistor, an MOS tube Q11, an MOS tube Q12, an MOS tube Q13, a voltage regulator tube D12, a voltage regulator tube D13, a voltage regulator tube D14, a differential mode inductor L8, a differential mode capacitor C30, a TVS diode D17 and a circuit consisting of two DC-DC chips. And the differential mode inductor L8 and the differential mode capacitor C30 are used for suppressing electromagnetic interference.
The MOS tube is used for switching on and off the circuit; the voltage stabilizing diodes are used for providing grid voltage for the MOS tube, and each voltage stabilizing diode is connected with a current limiting resistor in series; the grid voltage of the MOS tube Q11, the MOS tube Q12 and the MOS tube Q13 is provided by a voltage regulator tube D14, a voltage regulator tube D13 and a voltage regulator tube D12, when the TVS diode D17 is conducted, the MOS tube Q11 is in a conducting state, the MOS tube Q13 is in a switching-off state, and the drain and source stages of the MOS tube Q13 are connected to a main loop of the control circuit; the MOS tube Q12 is connected with the MOS tube Q13 in series, the source electrode of the MOS tube Q13 is connected with the source electrode of the MOS tube Q12, and the drain electrode of the MOS tube Q12 is connected with the input voltage cathode of the power module; when the input voltage of the power supply module is reversely connected, the gates of the MOS tube Q12 and the MOS tube Q13 have no voltage, the control circuit is in a disconnected state, and the MOS tube Q12 is mainly used for reverse connection protection of the input voltage.
The power supply module is used for supplying power to the singlechip, the input module, the output module and the current relay, providing three voltages of 5V, 15V and 24V, and has the functions of power supply reverse connection prevention protection, overvoltage protection and the like; and the two DC-DC chips are used for converting the input voltage into 15V and 5V and respectively supplying power to the totem-pole driving circuit and the single chip microcomputer in the input module and the output module.
The TVS diode D17 is used for overvoltage protection, when the input voltage of the power supply module exceeds a set value, the TVS diode D17 is conducted, a voltage stabilizing circuit connected behind the TVS diode D17 has voltage input, the voltage is clamped at about 15V, the 15V supplies voltage to the grid electrode of the MOS transistor Q11, the MOS transistor Q11 is conducted, the same potential of the drain electrode and the source electrode of the MOS transistor Q11 is 0V, the drain electrode of the MOS transistor Q11 is connected to the grid electrode of the MOS transistor Q13, the MOS transistor Q13 is in an off state, the control circuit is in an off state at the moment, and all circuits of the rear electrode have no voltage input, so that the control circuit is protected.
The utility model can directly connect the low-voltage DC brush motor into the power supply, after the system detects that the power line is connected into the motor, the system delays for a certain time, automatically switches on a loop or soft start, operates the motor, and after an operator pulls out the connector, the system can repeat automatic delay start or PWM duty ratio automatic soft start when testing again; the utility model discloses changed original must under the condition of outage, connect the motor power cord earlier and be pressing starting switch's operation mode for the circular telegram test becomes more simple and convenient and safety when the motor batch production of mill, has improved production efficiency, and especially when motor mass production, the effect is showing, and control system adopts single chip microcomputer system, and the structure is small and exquisite, and is with low costs.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. An automatic time-delay starting or automatic soft starting system is characterized in that: the method comprises the following steps: the singlechip is used for storing programs for automatically controlling the singlechip and receiving external input signals;
the input module is used for converting a motor power supply voltage signal into a voltage value input signal allowed by the single chip microcomputer, and a sampling point of the input module is arranged in a negative electrode circuit of a motor power supply;
the current relay is arranged in a positive circuit of a motor power supply and used for detecting the current state in the whole loop and providing signals for the single chip microcomputer;
the output module is used for amplifying the output signal of the single chip microcomputer and controlling the on-off of a motor power supply loop, and a point for controlling the on-off of the motor in the output module is arranged in a circuit behind the sampling point of the input module and in front of the negative electrode of the motor power supply;
the power supply module is used for supplying power to the single chip microcomputer, the input module, the output module and the current relay;
the input module and the current relay are connected with an I/O port of the single chip microcomputer, and the single chip microcomputer is electrically connected with the output module.
2. An automatic delayed start or automatic soft start system according to claim 1, characterized in that: the input module comprises a triode (Q14), a pull-up resistor (R33) is arranged at the collector of the triode (Q14), and the collector of the triode (Q14) is connected to the corresponding I/O port of the singlechip; the input module further comprises a voltage regulator tube (D15), the negative electrode of the voltage regulator tube (D15) is connected with the sampling point (test) through a resistor (R35), and the negative electrode of the voltage regulator tube (D15) is connected with the base electrode of the triode (Q14) through a resistor (R37).
3. An automatic delayed start or automatic soft start system according to claim 2, characterized in that: the current relay signal is connected to the middle point of a pull-up resistor formed by connecting a resistor (R23) and a resistor (R28) in series, and the middle point is connected to the corresponding I/O port of the single chip microcomputer.
4. An automatic delayed start or automatic soft start system according to claim 3, characterized in that: the output module comprises a totem pole drive, the totem pole drive comprises a plurality of resistors, NPN triodes and PNP triodes, the single chip microcomputer is connected with a totem pole drive input end (PC 1) corresponding to an I/O port, the totem pole drive output end is connected with a grid electrode of an MOS (Q21) tube through a resistor (R53), the resistor (R53) is connected with a fast switch diode (D21) in parallel, and points for controlling the on-off of a motor in the output module are connected with two ends of a drain electrode and a source electrode of the MOS tube (Q21).
5. An automatic delayed start or automatic soft start system according to claim 4, characterized in that: the power supply module comprises a resistor, an MOS (metal oxide semiconductor) tube (Q11), an MOS tube (Q12), an MOS tube (Q13), a voltage regulator tube (D12), a voltage regulator tube (D13), a voltage regulator tube (D14), a differential mode inductor (L8), a differential mode capacitor (C30), a TVS diode (D17) and a circuit consisting of two DC-DC chips; the grid voltage of the MOS tube (Q11), the MOS tube (Q12) and the MOS tube (Q13) is provided by a voltage regulator tube (D14), a voltage regulator tube (D13) and a voltage regulator tube (D12), when the TVS diode (D17) is conducted, the MOS tube (Q11) is in a conducting state, the MOS tube (Q13) is in a disconnecting state, and the drain and source stages of the MOS tube (Q13) are connected to a main loop of the control circuit; the MOS tube (Q12) is connected with the MOS tube (Q13) in series, the source electrode of the MOS tube (Q13) is connected with the source electrode of the MOS tube (Q12), and the drain electrode of the MOS tube (Q12) is connected with the negative electrode of the input voltage of the power supply module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921027016.6U CN210246635U (en) | 2019-07-03 | 2019-07-03 | Automatic time-delay starting or automatic soft starting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921027016.6U CN210246635U (en) | 2019-07-03 | 2019-07-03 | Automatic time-delay starting or automatic soft starting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210246635U true CN210246635U (en) | 2020-04-03 |
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ID=69989393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921027016.6U Expired - Fee Related CN210246635U (en) | 2019-07-03 | 2019-07-03 | Automatic time-delay starting or automatic soft starting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210246635U (en) |
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2019
- 2019-07-03 CN CN201921027016.6U patent/CN210246635U/en not_active Expired - Fee Related
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Granted publication date: 20200403 |