阅读说明：本技术 一种自动延时启动或自动软启动系统 (Automatic time-delay starting or automatic soft starting system ) 是由 李彩明 葛琦 于 2019-07-03 设计创作，主要内容包括：一种自动延时启动或自动软启动系统,包括单片机、输入模块、电流继电器、输出模块和电源模块。本发明可直接将低压直流有刷电机接入电源,系统检测到电源线接入电机后,延时一定时间,自动导通回路或软启动,将电机运行,操作者拔出接插件后,再次测试时系统可重复自动延时启动或PWM占空比自动软启动；本发明改变了原有必须在断电的情况下,先将电机电源线接上在按启动开关的操作方式,使得工厂电机批量生产时通电测试变得更加简便和安全,提高了生产效率,特别是在电机大批量生产时,效果显著,控制系统采用单片机系统,结构小巧,成本低。(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 low-voltage direct-current brush motor can be directly connected to a power supply, the system delays for a certain time after detecting that a power line is connected to the motor, a loop is automatically conducted or soft starting is carried out, the motor is operated, and the system can repeatedly carry out automatic delay starting or PWM duty ratio automatic soft starting when an operator pulls out a connector and tests again; the invention changes the original operation mode that the power line of the motor is firstly connected to the start switch under the condition of power failure, so that the power-on test is simpler, more convenient and safer during the mass production of the factory motor, the production efficiency is improved, particularly, the effect is obvious when the motor is produced in large batch, and the control system adopts a singlechip system, thereby having small structure and low cost.)

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.

Technical Field

The invention belongs to the technical development field of low-voltage direct-current brush motors, and particularly relates to an automatic delay start 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.

Disclosure of Invention

To overcome the above-mentioned deficiencies in the prior art, the present invention aims to provide an automatic delayed start or automatic soft start system.

In order to achieve the above objects and other related objects, the present invention provides the following technical solutions: 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.

Due to the application of the technical scheme, compared with the prior art, the invention has the advantages that:

the low-voltage direct-current brush motor can be directly connected to a power supply, the system delays for a certain time after detecting that a power line is connected to the motor, a loop is automatically conducted or soft starting is carried out, the motor is operated, and the system can repeatedly carry out automatic delay starting or PWM duty ratio automatic soft starting when an operator pulls out a connector and tests again; the invention changes the original operation mode that the power line of the motor is firstly connected to the start switch under the condition of power failure, so that the power-on test is simpler, more convenient and safer during the mass production of the factory motor, the production efficiency is improved, particularly, the effect is obvious when the motor is produced in large batch, and the control system adopts a singlechip system, thereby having small structure and low cost.

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 of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 ~ and fig. 5, it should be understood that the structures, ratios, sizes, etc. shown in the drawings attached to the present specification are only for the purpose of matching the disclosure of the present specification and are not intended to limit the practical limitations of the present invention, so they have no technical significance, and any structural modification, ratio change or size adjustment should still fall within the scope of the present invention without affecting the function and achievable effect of the present invention.