CN118054369A - Self-diagnosis switch controller - Google Patents

Abstract

The application provides a self-diagnosis switch controller, which comprises a control module, a first detection module, a driving module, a second detection module and a control module, wherein the control module comprises an on-off unit and an analog-to-digital conversion unit; the first detection module is electrically connected with the opening/closing unit; the driving module is electrically connected with the opening and closing unit and the first detection module respectively; the second detection module is electrically connected with the analog-to-digital conversion unit and is used for transmitting current data of the driving module to the control module; the input end of the first detection module is connected with the signal input end of the control module; the input end of the second detection module is connected with the signal input end of the control module; the input end of the driving module is connected with the signal output end of the control module. The application can send alarm information in time when faults occur, remind maintainers to maintain in time, and prolong the service life of equipment. Meanwhile, the application has simple structure, small volume, low cost and better market prospect.

Description

Self-diagnosis switch controller

Technical Field

The application relates to the technical field of switch control, in particular to a self-diagnosis switch controller.

Background

In the prior art, a load switch is provided with a simple arc extinguishing device, and can cut off rated load current and certain overload current only and cannot cut off an electric device of short-circuit current. The traditional mode of controlling the switching on and off of the load switch is to control the forward and reverse rotation of the motor through the relay control board and the main loop contactor, so as to drive the switching mechanism to perform switching on or switching off actions. However, the existing control load switch has overlarge opening and closing volume, higher cost, complex circuit and high failure rate.

Disclosure of Invention

The application provides a self-diagnosis switch controller, which aims to solve the problems of overlarge switching-on/off volume, higher cost, complex circuit, high failure rate and the like of a control load switch in the prior art.

To achieve the above object, the present application provides a self-diagnosis switch controller comprising:

the control module comprises an opening-in-opening-out unit and an analog-to-digital conversion unit;

The first detection module is electrically connected with the opening/closing unit;

The driving module is electrically connected with the opening-in-opening-out unit and the first detection module respectively;

the second detection module is electrically connected with the analog-to-digital conversion unit and is used for transmitting current data of the driving module to the control module;

The input end of the first detection module is connected with the signal input end of the control module; the input end of the second detection module is connected with the signal input end of the control module; the input end of the driving module is connected with the signal output end of the control module.

Further, the second detection module includes: the sampling resistor is arranged in a motor power supply loop of the second detection module; the control module further includes: the singlechip transmits the real-time current data of the motor to the singlechip of the control module through the second detection module.

Further, the self-diagnosis switch controller further includes:

The man-machine interaction module is connected with the output end of the control module and is connected with the opening/closing unit; the man-machine interaction module comprises a plurality of luminous indicator lamps and a plurality of resistors which are arranged in one-to-one correspondence with each luminous indicator lamp; and the plurality of luminous indicator lamps are used for indicating the running state and the fault state of the singlechip.

Further, the driving module comprises an isolation relay, a reversing relay and a metal oxide semiconductor field effect transistor electrically connected with the isolation relay and the reversing relay;

the first detection module includes: the switching-on command detection circuit, the switching-off command detection circuit, the switching-on interlocking signal detection circuit and the switching-off signal detection circuit;

The first detection module is used for: and detecting a closing command, a switching-off command, a closing interlocking signal and a switching-off signal of the switch controller, and indicating through the corresponding luminous indicator lamp when the closing command, the switching-off command, the closing interlocking signal and the switching-off signal are abnormal.

Further, the luminous indicator lamp comprises a first indicator lamp; the isolating relay and the reversing relay are also connected with the motor, and are used for detecting the current state in the motor power supply loop and reminding through the first indicator lamp.

Further, the light-emitting indicator lamp comprises a second indicator lamp; the driving module further includes:

the timing unit is connected with the motor; the metal oxide semiconductor field effect transistor is electrified and conducted, the motor starts to operate, and the operation time of the motor is timed through the timing unit;

And responding to the fact that the running time of the motor reaches the preset maximum time limit, and the split signal is not obtained, carrying out first mode prompt through the second indicator lamp, disconnecting the metal oxide semiconductor field effect transistor, and then opening the isolation relay to stop power supply to the motor.

Further, the light-emitting indicator lamp comprises a second indicator lamp; and responding to the condition that the loop current of the motor in operation is larger than the locked-rotor current threshold value of the motor, carrying out a second mode prompt through the second indicator lamp, disconnecting the metal oxide semiconductor field effect transistor, and then opening the isolation relay so as to stop power supply to the motor.

Further, the power supply anode of the motor is sequentially connected with the reversing relay contact, the drain electrode of the metal oxide semiconductor field effect transistor, the source electrode of the metal oxide semiconductor field effect transistor, the sampling resistor and the power supply cathode of the motor in series; and the common end of the contact of the reversing relay is connected with the motor.

Further, the second detection module further includes:

The input end of the signal conditioning circuit is connected with the two ends of the sampling resistor in parallel, the signal conditioning circuit is electrically connected with the analog-to-digital conversion unit, and the output end of the signal conditioning circuit is connected with the analog sampling port of the singlechip; and converting the voltage signals at two ends of the sampling resistor through the analog-to-digital conversion unit, and transmitting the converted signals to the singlechip for detection.

Further, the self-diagnosis switch controller further includes:

and the power supply module is connected with the control module and used for providing power supply for the switch controller.

Compared with the prior art, the application has the beneficial effects that: the application provides a self-diagnosis switch controller, which comprises a control module, a first detection module, a driving module, a second detection module and a control module, wherein the control module comprises an on-off unit and an analog-to-digital conversion unit; the first detection module is electrically connected with the opening/closing unit; the driving module is electrically connected with the opening and closing unit and the first detection module respectively; the second detection module is electrically connected with the analog-to-digital conversion unit and is used for transmitting current data of the driving module to the control module; the input end of the first detection module is connected with the signal input end of the control module; the input end of the second detection module is connected with the signal input end of the control module; the input end of the driving module is connected with the signal output end of the control module. According to the application, the second detection module transmits the real-time current data of the motor to the control module, so that the state of the equipment is monitored in real time, alarm information is sent in time when faults occur, an maintainer is reminded to maintain in time, and the service life of the equipment is prolonged. Meanwhile, the application has simple structure, small volume, low cost and better market prospect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only for the purpose of more clearly illustrating the embodiments of the present application or the technical solutions in the prior art, and that the drawings required for the embodiments or the description of the prior art will be briefly introduced below, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall circuit control structure of the present application;

FIG. 2 is a schematic circuit diagram of the opening detection module according to the present application;

FIG. 3 is a schematic circuit diagram of a driving module and a second detecting module according to the present application;

Fig. 4 is a schematic diagram of a man-machine interaction module according to the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The terms "first," "second," and "first," herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "first", "second", or "first" may include at least one such feature, either explicitly or implicitly. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The present inventors have studied to find that: the load switch has a simple arc extinguishing device, and can cut off rated load current and certain overload current, and can not cut off short-circuit current. The traditional mode of controlling the switching on and off of the load switch is to control the forward and reverse rotation of the motor through the relay control board and the main loop contactor, so that the switching on and off mechanism is driven to perform switching on and off actions, because the motor is high in power, the main loop contactor of the control motor is high in breaking capacity, the control loop is overlarge in size and high in cost, meanwhile, the control board built by the relay is also required to detect switching on, switching off and switching off positions and other auxiliary signals at the same time, the connected circuit is complex, and the circuit of a connecting staff is often easy to connect by mistake in actual operation.

At present, an electric load switch controller is proposed by manufacturers to replace an early relay control board and a main loop contactor circuit, but the product mainly solves the problems of complex original circuit, high cost and large volume, does not protect a motor, often has the phenomenon of motor burnout in the operation process, does not have a self-diagnosis function, and is difficult to troubleshoot.

In order to solve the above problems, the present application provides a self-diagnosis switch controller.

Referring to fig. 1 to 4, fig. 1 is a schematic diagram of an overall circuit control structure according to the present application; FIG. 2 is a schematic circuit diagram of the opening detection module according to the present application; FIG. 3 is a schematic circuit diagram of a driving module and a second detecting module according to the present application; fig. 4 is a schematic diagram of a man-machine interaction module according to the present application.

The application provides a self-diagnosis switch controller 100, which comprises a control module 10, a first detection module 20, a driving module 30, a second detection module 40 and a power module 50, wherein the power module 50 is connected with the control module 10 and is used for providing power for other components in the switch controller. The control module 10 comprises an opening/closing unit 11 and an analog-to-digital conversion unit 12; the first detection module 20 is electrically connected with the opening/closing unit 11; the driving module 30 is electrically connected with the opening/closing unit 11 and the first detection module 20, respectively; wherein the input end of the first detection module 20 is connected with the signal input end of the control module 10; the input end of the second detection module 40 is connected with the signal input end of the control module 10; the input of the driving module 30 is connected to the signal output of the control module 10.

The second detection module 40 is electrically connected with the analog-to-digital conversion unit 12, and is used for transmitting the current data of the driving module 30 to the control module; further, the control module further includes a single-chip microcomputer 101, and the real-time current data of the motor 43 is transmitted to the single-chip microcomputer 101 of the control module through the second detection module 40.

In one embodiment, the second detection module 40 includes a motor 43 and a sampling resistor Rc, where the sampling resistor Rc is disposed in a power supply loop of the motor 43 of the second detection module 40; the drive module 30 may specifically be a motor 43 driving the module 30.

Specifically, the motor 43 in this embodiment may be a dc motor, and in other embodiments, the motor 43 may also be another motor 43, which is not limited in the present application.

In an embodiment, the second detection module 40 may further include a signal conditioning circuit 42, where an input end of the signal conditioning circuit 42 is connected in parallel to two ends of the sampling resistor Rc, and the signal conditioning circuit 42 is electrically connected to the analog-to-digital conversion unit 12, and an output end of the signal conditioning circuit 42 is connected to an analog sampling port of the single chip microcomputer 101; the analog-to-digital conversion unit 12 converts the voltage signals at two ends of the sampling resistor Rc, and transmits the converted signals to the singlechip 101 for detection.

In this embodiment, the positive electrode of the power supply of the motor 43 is sequentially connected in series with the contact of the reversing relay KM2, the drain electrode of the metal oxide semiconductor field effect transistor MOS, the source electrode of the metal oxide semiconductor field effect transistor MOS, the sampling resistor Rc and the negative electrode of the power supply of the motor 43; the common contact 45 of the reversing relay KM2 is connected to the motor 43.

For convenience of description, the first detection module 20 is taken as the opening amount detection module 21, and the second detection module 40 is taken as the motor 43 execution detection module 41 in this embodiment as an example.

As shown in fig. 2, the opening amount detection module 21 includes a closing command detection circuit, a breaking command detection circuit, a closing interlock signal detection circuit, and a dividing signal detection circuit.

R1, U1, resistance R5, R6 constitute the closing command detection circuit, and when first switch K1 closed, the sign IN1 output low level, and singlechip 101 can judge the closing command through detecting the signal of IN 1.

R2, U2, R7, R8 constitute a brake-off command detection circuit, when the second switch K2 is closed, the reference number IN2 outputs a low level, and the singlechip 101 can judge the brake-off command by detecting the signal of IN 2.

R3, U3, R9, R10 constitute the switch-on interlocking signal detection circuit, and when third switch LS is closed, the sign IN3 outputs low level, and singlechip 101 can judge whether switch-on interlocking signal inserts through detecting the signal of IN 3.

R4, U4, R11, R12 constitute the bit signal detection circuit, and when fourth switch FK is closed, the sign IN4 outputs low level, and singlechip 101 can judge the bit signal through detecting the signal of IN 4. IN the switching-on operation process, the singlechip 101 controls the motor to stop working by detecting that the IN4 signal becomes low level.

As shown in fig. 3, the driving module 30 includes an isolation relay KM1 and a reversing relay KM2, and a metal oxide semiconductor field effect transistor MOS (Metal Oxide Semiconductor, MOS transistor) electrically connected to the isolation relay KM1 and the reversing relay KM 2. In this embodiment, the mosfet MOS is preferably a high-power MOS transistor.

Specifically, the entry detection module 21 may be configured to: and detecting a closing command, a switching-off command, a closing linkage signal and a switching-off signal of the switch controller, and indicating through a corresponding luminous indicator lamp 61 when the closing command, the switching-off command, the closing linkage signal and the switching-off signal are abnormal.

Specifically, the electric controller is completed through the isolating relay KM1, the reversing relay KM2 and the high-power metal oxide semiconductor field effect transistor MOS of the motor 43 driving module 30, and the switching-on command, the switching-off command, the switching-on interlocking signal and the switching-on position signal are detected through the switching-in amount detecting module 21, so that the size of the controller is reduced, and the cost is reduced.

The positive electrode of a power supply of the motor 43 is connected with the input end of the reversing relay KM2, and the output end of the isolating relay KM1 is connected with the input end of the reversing relay KM 2; the output end of the reversing relay KM2 is connected with the input end of the high-power metal oxide semiconductor field effect transistor MOS; the input end of the sampling resistor Rc is connected with the output end of the high-power metal oxide semiconductor field effect transistor MOS; the output of the sampling resistor Rc is connected to the power supply terminal of the motor 43. The power supply loop of the motor 43 is as follows in order from the positive electrode of the motor 43 power supply: the isolation relay KM1 contact, the reversing relay KM2 contact, the motor 43, the high-power metal oxide semiconductor field effect transistor MOS and the sampling resistor Rc are connected to the negative end of the motor 43 power supply.

D1, KM1, R41 and Q1 form an isolation relay circuit, and when the singlechip 101 outputs high level at the end D01, the isolation relay KM1 is closed.

D2, KM2, R42 and Q1 form a reversing relay circuit, the singlechip 101 outputs a low level at the D02 end, so that the contact state of the reversing relay KM2 is cold, the power supply direction of the direct current motor 43 is forward, the singlechip 101 outputs a high level at the DO4 section, the high-power metal oxide semiconductor field effect transistor MOS is turned on, the motor 43 is powered forward, and the forward rotation drives the load switch to be switched on; the singlechip 101 outputs high level at the end D02, so that the contact state of the reversing relay KM2 is reversed, the power supply direction of the direct current motor 43 is reversed, the singlechip 101 outputs high level at the section DO4, the high-power metal oxide semiconductor field effect transistor MOS is conducted, the power supply direction of the direct current motor 43 is reversed, the motor 43 is reversely supplied, and the reversing drives the load switch to open.

The input end of the signal conditioning circuit is connected with two ends of the sampling resistor Rc in parallel, the signal conditioning circuit modulates voltage signals at two ends of the sampling resistor Rc into signals which can be collected by the singlechip 101, the signals are output at the AIN1 end, and the AIN1 end is connected with the analog input end of the singlechip 101.

In an embodiment, the self-diagnosis switch controller 100 further includes a man-machine interaction module 60, where the man-machine interaction module 60 is connected to an output end of the control module and is connected to the on-off unit 11; the man-machine interaction module 60 comprises a plurality of luminous indicator lamps 61 and a plurality of resistors which are arranged in one-to-one correspondence with each luminous indicator lamp 61; the plurality of light emitting indicator lamps 61 may indicate the running state, failure and alarm state of the program of the single chip microcomputer 101.

As shown in fig. 4, in an embodiment, the man-machine interaction module 60 includes a self-check success indicator lighting circuit, an action (closing and opening actions) success indicator lighting circuit, a fault indicator lighting circuit, and an alarm indicator lighting circuit. The plurality of light emitting indicator lamps 61 are provided in one-to-one correspondence with the self-check success indicator lamp lighting circuit, the action (closing and opening action) success indicator lamp lighting circuit, the fault indicator lamp lighting circuit, and the warning indicator lamp lighting circuit.

In an embodiment, the light emitting indicator lamp 61 may include a first indicator lamp LED53, a second indicator lamp LED54, a third indicator lamp LED51, and a fourth indicator lamp LED52. Specifically, the indicator lamps may be LEDs, minileds, etc., which is not limited in the present application.

In an embodiment, the isolation relay KM1, the commutation relay KM2 and the motor 43 are further connected with a metal oxide semiconductor field effect transistor MOS, and are used for detecting a current state in a power supply loop of the motor 43, and reminding through the first indicator light LED53, the second indicator light LED54 and the fourth indicator light LED52, for example, when no current exists in the power supply loop of the motor 43, the two lower active indicator light LED54 indicates that the motor 43 has an open circuit fault in a short time, so that maintenance personnel is reminded that the equipment has a fault and needs to be overhauled, the maintenance personnel is convenient to overhaul the fault in time, the maintenance punctuality is improved, and the service life of the equipment is prolonged.

Specifically, for example, as shown in fig. 4, the single-chip microcomputer 101 reads the fault history of burning out of the high-power MOS stored in the internal data memory (not shown), and the single-chip microcomputer 101 outputs a low level on the mcu_13 end, and the first indicator LED53 indicates that the lamp is always on, so as to report the damage fault of the MOS. For another example, as shown in fig. 2 and fig. 4, the single-chip microcomputer 101 outputs a high level at the D01 end, then the isolation relay KM1 is closed, the single-chip microcomputer 101 outputs a low level at the D02 end, the contact state of the reversing relay KM2 is in a cold state, the power supply direction of the direct current motor 43 is forward, the voltage signals at two ends of the sampling resistor Rc in the power supply loop of the motor 43 are connected in series, after being modulated by the signal conditioning circuit 42, the current signal of the motor 43 is output at the AIN1 end, the single-chip microcomputer 101 detects the signal size of the AIN1 end, whether the current exists in the loop of the motor 43, the current exists, the single-chip microcomputer 101 outputs a low level at the mcu_14 end, the first indicator lamp LED53 indicates that the lamp is always on, and the metal oxide semiconductor field effect transistor MOS is damaged.

In an embodiment, the driving module 30 may further include a timing unit (not shown), which is connected to the motor 43; the mosfet MOS is turned on, the motor 43 starts to operate, and the operation time of the motor 43 is counted by the counting unit.

Specifically, the isolation relay KM1 and the reversing relay KM2 of the motor 43 driving module 30 may be closed, the high-power mosfet MOS is turned on, the motor 43 is powered on and operated for starting to time, once the motor 43 is operated for exceeding a specified time limit, the second indicator LED54 indicator is flashed for a short time when no change of the split signal is detected, the motor 43 is overtime in operation, the high-power mosfet MOS is turned off, the isolation relay KM1 is turned on, and the power supply to the power supply circuit of the motor 43 is stopped, thereby preventing the motor 43 from being burned out due to long-time operation of the motor 43. It can be understood that the timing unit in this embodiment is preferably a timing program in the single-chip microcomputer 101, so that the device structure can be simplified.

In an embodiment, in response to the running time of the motor 43 reaching the preset maximum time limit and no split signal is obtained, a first mode indication is performed by the second indicator LED52, for example, the first mode may be that the second indicator LED54 is flashed down, and the isolation relay KM1 is turned on at the same time, so that the mosfet MOS is turned off to stop the power supply to the motor 43.

Specifically, the isolation relay KM1 and the reversing relay KM2 of the motor 43 driving module 30 can be closed, the high-power metal oxide semiconductor field effect transistor MOS is turned on, whether the loop current of the motor 43 is smaller than the current threshold of the motor 43 is detected, when the loop current of the motor 43 is smaller than the current threshold of the motor 43, the second indicator lamp LED54 is flashing for two short time, the power supply loop of the motor 43 is opened, the isolation relay KM1 is opened, the power supply loop of the motor 43 is stopped, the maintainer is reminded of line faults, and the maintenance is convenient.

In another embodiment, in response to the loop current of the motor 43 being greater than the current threshold of the motor 43, a second mode indication is made by the second indicator LED52, for example, the second mode may be when the second indicator LED54 is flashing three times, and the isolation relay KM1 is opened, so that the mosfet MOS is turned off to stop the power supply to the motor 43.

Specifically, the isolation relay KM1 and the reversing relay KM2 of the motor 43 driving module 30 are closed, the high-power metal oxide semiconductor field effect transistor MOS is turned on, whether the loop current of the motor 43 is larger than the motor 43 locked-rotor current threshold value or not is detected, when the loop current of the motor 43 is larger than the motor 43 locked-rotor current threshold value, the second indicator lamp LED54 indicates that the lamp shines three times in short time, the motor 43 is locked-rotor, the isolation relay KM1 is opened, and the power supply loop of the motor 43 is forcibly cut off, so that the motor 43 is prevented from burning out and the load switch mechanism is prevented from being damaged, and the service life of equipment is prolonged.

The third indicator light LED51 and the first resistor R51 may form a self-checking success indicator light circuit. The singlechip 101 outputs a low-level pulse on the MCU_16 end, and the third indicator lamp LED51 is turned on once to prompt success of self-checking.

The fourth indicator light LED52 and the second resistor R52 may form a motion success indicator light circuit. After the switching-on and switching-off of the load switch is successful, the singlechip 101 outputs a low-level pulse on the MCU_15 end, and the fourth indicator light LED52 is lightened once to prompt that the action is successful.

The first indicator light LED53 and the third resistor R53 may constitute a fault indicator light circuit. When the singlechip 101 detects that the MOS of the high-power metal oxide semiconductor field effect transistor is damaged, the singlechip 101 outputs a low level on the MCU_14 end, and the first indicator light LED53 is always on to prompt the MOS of the metal oxide semiconductor field effect transistor to damage and fail; when the singlechip 101 detects that the signal of IN3 is at a high level, the singlechip 101 continuously and circularly outputs a low-level pulse on the MCU_14 end, and the first indicator light LED53 always flashes to prompt the lack of a closing interlocking signal.

The second indicator light LED54 and the fourth resistor R54 may form an alarm indicator light circuit. The singlechip 101 continuously and circularly outputs a low-level pulse on the MCU_13 end, and the second indicator light LED54 flashes for a short time to prompt the motor 43 to run overtime; the singlechip 101 continuously and circularly outputs two low-level pulses on the MCU_13 end, and the second indicator light LED54 flashes for two times to prompt the open circuit of the power supply loop of the motor 43; the singlechip 101 continuously and circularly outputs three low-level pulses on the MCU_13 end, and the second indicator light LED54 flashes three times in a short time to prompt the motor 43 to stop rotating.

In an embodiment, as shown in fig. 1, the self-diagnosis switch controller 100 may further include an opening module 70, the opening module 70 is connected to the opening/closing unit 11, the opening module 70 includes an alarm relay, and an alarm signal may be output through the alarm relay closure of the opening module 70.

For example, as shown in fig. 1 to 4, the closing operation execution process of the present application may be:

After the application is powered on, the singlechip 101 reads the internal data memory, and when the fault history record of the burning-out of the high-power MOS cannot be read, a self-checking lamp is turned on to indicate that the self-checking is normal; on the contrary, when the singlechip 101 reads the permanent fault history record of the high-power MOS damage from the internal data memory, the singlechip 101 outputs a low level on the MCU_14 end, and the first indicator light LED53 is normally on, so that the MOS damage fault of the metal oxide semiconductor field effect transistor is prompted.

As shown IN fig. 2, when the third switch LS is turned on, the reference numeral IN3 outputs a high level, the singlechip 101 cannot detect a closing linkage signal on the IN3 port, the singlechip 101 continuously and circularly outputs a low-level pulse level on the mcu_14 end, and the first indicator light LED53 always blinks to prompt that the closing linkage signal is absent. When the third switch LS is closed, the reference number IN3 outputs a low level, the singlechip 101 can judge that the switching-on interlocking signal is connected by detecting the low level signal of IN3, and the singlechip 101 outputs a high level first indicator light LED53 on the MCU_14 end to be always extinguished, so that the switching-on interlocking signal is prompted to be connected.

When the first switch K1 is closed, the reference numeral IN1 outputs a low level, the single-chip microcomputer 101 judges that a switching-on command is accessed by detecting a low level signal of IN1, the single-chip microcomputer 101 outputs a high level at a D01 end, then the isolation relay KM1 is closed, the single-chip microcomputer 101 outputs a low level at a D02 end, the contact state of the reversing relay KM2 is IN a cold state, the power supply direction of the direct-current motor 43 is forward, the single-chip microcomputer 101 outputs a low level at a DO4 section, the high-power metal oxide semiconductor field effect transistor MOS is cut off, the voltage signals connected IN series to the two ends of the sampling resistor Rc IN the power supply loop of the motor 43 are modulated by the signal conditioning circuit 42, the current signal of the motor 43 is output at an AIN1 end, the single-chip microcomputer 101 detects the signal size of the AIN1 end, whether the current exists IN the power supply loop of the motor 43 is judged, the current exists, the single-chip microcomputer 101 outputs a low level at an mcu_14 end, the first indicator LED53 is always on, the metal oxide semiconductor field effect transistor MOS damages the fault is reported, the fault record of the high-power MOS damages is written into an internal data memory, the single-chip microcomputer 101 outputs the fault record of the high-power MOS at the D01, the low level at the D01 end, the isolation circuit is opened for the power supply loop 43, and the power supply loop is stopped.

As shown IN fig. 2, when the first switch K1 is closed, the reference numeral IN1 outputs a low level, the single chip microcomputer 101 determines that a switching-on command is accessed by detecting a low level signal of IN1, the single chip microcomputer 101 outputs a high level at a D01 end, and then the isolation relay KM1 is closed, the single chip microcomputer 101 outputs a low level at a D02 end, the contact state of the reversing relay KM2 is IN a cold state, the power supply direction of the direct current motor 43 is forward, the single chip microcomputer 101 outputs a high level at a DO4 section, the high power metal oxide semiconductor field effect transistor MOS is turned on, and the motor 43 is powered forward to drive the load switch to be switched on IN a forward rotation; the singlechip 101 detects the signal size of the AIN1 end, judges the current size of the loop of the motor 43, has current and current value not larger than the locked-rotor threshold value, the singlechip 101 outputs a signal at the level of the index IN4 through the index IN4 by detecting the fourth switch FK through the index signal detection circuit, the index IN4 is always a low-level signal, the index signal can be judged to be always present, the duration is longer than a preset time value, the singlechip 101 outputs the low level at the DO4 section, the high-power metal oxide semiconductor field effect transistor MOS is turned off, the motor 43 stops running, the singlechip 101 outputs the low level at the D01 end, the isolating relay KM1 is turned on, the singlechip 101 continuously and circularly outputs a low-level pulse level at the MCU_13 end, the second indicator LED54 flashes for a short time, and the motor 43 is prompted to run overtime.

As shown IN fig. 2, when the first switch K1 is closed, the reference numeral IN1 outputs a low level, the single-chip microcomputer 101 determines that a switching-on command is switched IN by detecting a low level signal of IN1, the single-chip microcomputer 101 outputs a high level at a D01 end, and then the isolation relay KM1 is closed, the single-chip microcomputer 101 outputs a low level at a D02 end, the contact state of the reversing relay KM2 is cold, the power supply direction of the direct-current motor 43 is forward, the single-chip microcomputer 101 outputs a high level at a DO4 section, the high-power metal oxide semiconductor field effect transistor MOS is turned on, the motor 43 is powered forward, the load switch is driven to switch on by forward rotation, the single-chip microcomputer 101 detects the signal of the AIN1 end, the circuit current of the motor 43 is determined, when no current is present, the single-chip microcomputer 101 outputs a low level at the DO4 section, the high-power metal oxide semiconductor field effect transistor MOS is turned off, the motor 43 stops running, the single-chip microcomputer 101 outputs a low level at the D01 end, and then the isolation relay KM1 is opened, the single-chip microcomputer 101 continuously and circularly outputs two low level pulse levels at the mcu_13 end, and the second indicator LED54 is turned on, and the two power supply circuits flash circuit are indicated.

As shown IN fig. 2, when the first switch K1 is closed, the reference numeral IN1 outputs a low level, the single-chip microcomputer 101 determines that a switch-on command is received by detecting a low level signal of IN1, the single-chip microcomputer 101 outputs a high level at a D01 end, and then the isolation relay KM1 is closed, the single-chip microcomputer 101 outputs a low level at a D02 end, the contact state of the reversing relay KM2 is cold, the power supply direction of the direct-current motor 43 is forward, the single-chip microcomputer 101 outputs a high level at a DO4 end, the high-power metal oxide semiconductor field effect transistor MOS is turned on, the motor 43 is powered forward, the load switch is driven to switch on by forward rotation, the single-chip microcomputer 101 detects the signal size at an AIN1 end, determines that the loop current of the motor 43 is greater than a switch-on threshold value, the single-chip microcomputer 101 outputs a low level at a DO4 end, and then the high-power metal oxide semiconductor field effect transistor MOS is turned off, the motor 43 stops running, the single-chip microcomputer 101 outputs a low level at a D01 end, and then the isolation relay KM1 is turned on, the single-chip microcomputer 101 is cycled on at a13 end to not stop outputting three low level pulse levels, the second indicator lamp 54 is turned on, and the motor is turned off by a MCU is indicated.

When the first switch K1 is closed, the label IN1 outputs a low level, the singlechip 101 judges that a switching-on command is switched on by detecting a low level signal of the IN1, the singlechip 101 outputs a high level at a D01 end, then the isolation relay KM1 is closed, the singlechip 101 outputs a low level at a D02 end, the contact state of the reversing relay KM2 is IN a cold state, the power supply direction of the direct current motor 43 is forward, the singlechip 101 outputs a high level at a DO4 section, the high-power metal oxide semiconductor field effect transistor MOS is conducted, the motor 43 is powered forward, the singlechip 101 drives a load switch to switch on IN a forward mode, the singlechip 101 detects the signal size of the AIN1 end, judges that the current size of a loop of the motor 43 is not greater than a blocking threshold value, the current is switched off, the singlechip 101 outputs a high level through detecting a fourth switching-on threshold value after the load switch finishes switching-on, the level of the label IN4 is changed into a high level signal through a bit signal detection circuit, the singlechip 101 outputs a low level at the DO4 section, the high-power metal oxide semiconductor field effect transistor MOS is turned off, the motor 43 stops running, the singlechip 101 outputs a low level signal at the D01, and the MCU is turned on a low level, and the MCU is turned on, and the LED is turned on a pulse switch is turned on for a low level, and a pulse is turned on, is turned off.

When the second switch K2 is closed, the label IN2 outputs a low level, the singlechip 101 judges the switching-on and switching-off command to be switched on by detecting a low level signal of the IN2, the singlechip 101 outputs a high level at the end D01, then the isolation relay KM1 is closed, the singlechip 101 outputs a high level at the end D02, the contact state of the reversing relay KM2 is reversed, the power supply direction of the direct current motor 43 is reversed, the singlechip 101 outputs a high level at the section DO4, the high-power metal oxide semiconductor field effect transistor MOS is conducted, the motor 43 is reversely supplied with power, the reversing drives the load switch to switch off, the singlechip 101 detects the signal size at the end AIN1, and the loop current size of the motor 43 is judged, after the load switch is turned off, the fourth switch FK is turned on, the singlechip 101 outputs a signal at the level of the index IN4 through detecting the fourth switch FK by the index IN4 detection circuit, the level of the index IN4 is changed into a low level signal, the singlechip 101 outputs a low level at the DO4 section, the high-power metal oxide semiconductor field effect transistor MOS is turned off, the motor 43 stops running, the singlechip 101 outputs a low level at the D01 end, the isolating relay KM1 is turned on, the singlechip 101 outputs a low level pulse level at the MCU_15 end, the fourth indicator light LED52 is turned on once, and the prompting action is successful.

None of the details of the present application are known in the art.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the application.

Claims (10)

1. A self-diagnostic switch controller comprising:

the control module comprises an opening-in-opening-out unit and an analog-to-digital conversion unit;

The first detection module is electrically connected with the opening/closing unit;

The driving module is electrically connected with the opening-in-opening-out unit and the first detection module respectively;

the second detection module is electrically connected with the analog-to-digital conversion unit and is used for transmitting current data of the driving module to the control module;

The input end of the first detection module is connected with the signal input end of the control module; the input end of the second detection module is connected with the signal input end of the control module; the input end of the driving module is connected with the signal output end of the control module.

2. The self-diagnostic switch controller of claim 1, wherein said second detection module comprises:

A motor;

The sampling resistor is arranged in a motor power supply loop of the second detection module;

The control module further includes: the singlechip transmits the real-time current data of the motor to the singlechip of the control module through the second detection module.

3. The self-diagnostic switch controller as set forth in claim 2, further comprising:

The man-machine interaction module is connected with the output end of the control module and is connected with the opening/closing unit; the man-machine interaction module comprises a plurality of luminous indicator lamps and a plurality of resistors which are arranged in one-to-one correspondence with each luminous indicator lamp; and the plurality of luminous indicator lamps are used for indicating the running state and the fault state of the singlechip.

4. A self-diagnostic switch controller as set forth in claim 3, wherein said drive module comprises an isolation relay and a commutation relay, and a metal oxide semiconductor field effect transistor electrically connected to said isolation relay and said commutation relay;

the first detection module includes: the switching-on command detection circuit, the switching-off command detection circuit, the switching-on interlocking signal detection circuit and the switching-off signal detection circuit;

wherein, the first detection module is used for: and detecting a closing command, a switching-off command, a closing interlocking signal and a switching-off signal of the switch controller, and indicating through the corresponding luminous indicator lamp when the closing command, the switching-off command, the closing interlocking signal and the switching-off signal are abnormal.

5. The self-diagnostic switch controller of claim 4, wherein said light-emitting indicator light comprises a first indicator light; the isolating relay, the reversing relay and the metal oxide semiconductor field effect transistor are also connected with the motor, and are used for detecting the current state in the motor power supply loop and reminding through the first indicator lamp.

6. The self-diagnostic switch controller of claim 4, wherein said light-emitting indicator light comprises a second indicator light; the driving module further includes:

the timing unit is connected with the motor; the metal oxide semiconductor field effect transistor is electrified and conducted, the motor starts to operate, and the operation time of the motor is timed through the timing unit;

And responding to the fact that the running time of the motor reaches the preset maximum time limit, and the split signal is not obtained, carrying out first mode prompt through the second indicator lamp, disconnecting the metal oxide semiconductor field effect transistor, and then opening the isolation relay to stop power supply to the motor.

7. The self-diagnostic switch controller of claim 4, wherein said light-emitting indicator light comprises a second indicator light; and responding to the condition that the loop current of the motor in operation is larger than the locked-rotor current threshold value of the motor, carrying out a second mode prompt through the second indicator lamp, disconnecting the metal oxide semiconductor field effect transistor, and then opening the isolation relay so as to stop power supply to the motor.

8. The self-diagnostic switch controller according to any one of claims 2 to 7, wherein a power supply anode of the motor is connected in series with the commutation relay contact, the drain of the mosfet, the source of the mosfet, the sampling resistor, and a power supply cathode of the motor in order; and the common end of the contact of the reversing relay is connected with the motor.

9. The self-diagnostic switch controller of claim 2, wherein said second detection module further comprises:

The input end of the signal conditioning circuit is connected with the two ends of the sampling resistor in parallel, the signal conditioning circuit is electrically connected with the analog-to-digital conversion unit, and the output end of the signal conditioning circuit is connected with the analog sampling port of the singlechip; and converting the voltage signals at two ends of the sampling resistor through the analog-to-digital conversion unit, and transmitting the converted signals to the singlechip for detection.

10. A self-diagnostic switch controller as set forth in claim 1 or 9, further comprising:

and the power supply module is connected with the control module and used for providing power supply for the switch controller.