CN112373022B - Starting protection circuit with self-checking function and 3D printer - Google Patents

Starting protection circuit with self-checking function and 3D printer Download PDF

Info

Publication number
CN112373022B
CN112373022B CN202011384732.7A CN202011384732A CN112373022B CN 112373022 B CN112373022 B CN 112373022B CN 202011384732 A CN202011384732 A CN 202011384732A CN 112373022 B CN112373022 B CN 112373022B
Authority
CN
China
Prior art keywords
power supply
self
delay
controlled switch
main control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202011384732.7A
Other languages
Chinese (zh)
Other versions
CN112373022A (en
Inventor
刘辉林
唐京科
陈春
敖丹军
雷丛金
刘根伸
蔡晓亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Chuangxiang 3D Technology Co Ltd
Original Assignee
Shenzhen Chuangxiang 3D Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen Chuangxiang 3D Technology Co Ltd filed Critical Shenzhen Chuangxiang 3D Technology Co Ltd
Priority to CN202011384732.7A priority Critical patent/CN112373022B/en
Priority to PCT/CN2020/141112 priority patent/WO2022110485A1/en
Publication of CN112373022A publication Critical patent/CN112373022A/en
Application granted granted Critical
Publication of CN112373022B publication Critical patent/CN112373022B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
    • B29C64/30—Auxiliary operations or equipment
    • B29C64/386—Data acquisition or data processing for additive manufacturing
    • B29C64/393—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00—Data acquisition or data processing for additive manufacturing
    • B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Power Sources (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)

Abstract

The embodiment of the invention discloses a starting-up protection circuit with a self-checking function and a 3D printer. The starting-up protection circuit comprises a controlled switch, a switching power supply, a time delay module and a main control board, wherein: the controlled switch is conducted when a user presses the controlled switch, so that an external power supply supplies power to the switch power supply instantly, the switch power supply generates working voltage when the external power supply is switched on, and the delay module receives the working voltage during the instant power supply period to generate a delay signal; the controlled switch controls self time-delay conduction according to the time-delay signal, an external power supply supplies power to the switch power supply in a time-delay conduction period, and the main control board receives working voltage to start a self-checking function and outputs a startup and shutdown signal in the time-delay power supply period; the controlled switch controls the continuous conduction state of the controlled switch according to the on-off signal so as to control whether the printer equipment is normally started to supply power. The embodiment of the invention realizes that the power supply of the main control board is automatically delayed before the power is started to complete self-check, and the power can be successfully started only after the self-check is passed, thereby ensuring the power utilization safety of the main control board.

Description

Starting protection circuit with self-checking function and 3D printer
Technical Field
The invention relates to the technical field of printers, in particular to a starting protection circuit with a self-checking function and a 3D printer.
Background
The safety of the electric appliance is an important reference standard when a user selects the electric appliance and is also a factory standard which must be ensured when a manufacturer produces the electric appliance. At present, each industry invests energy to ensure the safety of the electric appliance so as to ensure the personal and property safety, the 3D printer is used as an electric appliance which is developed at a rapid speed, and more defects exist in the aspect of safety at present, particularly, the FDM hot melting 3D printer: because of the operating characteristics of 3D printer, at present pay close attention to the executive component of printing action such as shower nozzle in the safety problem research to the 3D printer more, and lack the attention to the power consumption safety of main control board, the main control board that causes because of not discovering in time that the main control board trouble lasts the circular telegram and uses very easily appears burns out the scheduling problem.
Disclosure of Invention
In view of this, the embodiment of the present invention provides a power-on protection circuit with a self-checking function and a 3D printer, which can implement automatic short-time power supply by using one-time user pressing as a power-on operation before power on, so that a main control board completes self-checking, and determines whether to continue to supply power to power on according to a self-checking result, thereby improving the security of the device.
In a first aspect, an embodiment of the present invention provides a power-on protection circuit with a self-test function, including a controlled switch, a switching power supply, a delay module, and a main control board, where:
the controlled switch is conducted when pressed by a user, so that an external power supply instantaneously supplies power to the switching power supply through the conducted controlled switch, the switching power supply is used for generating working voltage when the external power supply is connected, and the delay module is used for receiving the working voltage during instantaneous power supply to generate a delay signal; the controlled switch controls self time-delay conduction according to the time-delay signal so that an external power supply supplies power to the switching power supply in a time-delay way through the time-delay conducted controlled switch, and the main control board is used for receiving the working voltage during the time-delay power supply period to start a self-checking function and outputting a startup and shutdown signal according to a self-checking result; and the controlled switch controls the continuous conduction state of the controlled switch according to the on-off signal so as to control whether the printer equipment is normally started to supply power. When a user presses and triggers the controlled switch, the controlled switch conducts an external power supply, after the switching power supply is electrified, the controlled switch is controlled by the delay module to delay and keep the switching power supply electrified, so that the switching power supply delays to supply power to enable the main control board to complete self-detection, the power is supplied to the main control board automatically in a delayed mode before starting, the main control board can be started successfully only after the self-detection is passed, and the power utilization safety of the main control board is ensured.
In some embodiments, the delay module includes an RC delay circuit, the RC delay circuit keeps on when receiving the working voltage delay, and the on/off of the RC delay circuit is used as the delay signal, so that the control is simple and the cost is low.
In some embodiments, the controlled switch comprises a relay and a self-recovery switch connected in parallel, the relay being normally open, the self-recovery switch being adapted to close when pressed by a user to turn on the external power source and the switching power source; when the time delay module is in a conducting state, the relay is kept closed; when the time delay module is in a cut-off state, the relay controls the self to be closed or disconnected according to the startup and shutdown signal, and the relay is switched on according to the pressing of a user and independently switched on according to the time delay signal without directly operating the relay.
In some embodiments, the controlled switch further includes a signal control unit, configured to recognize the power on/off signal and control the conducting state of the relay according to the power on/off signal, where the signal control unit provides a specific signal control circuit to control the conducting state of the controlled switch according to the power on/off signal.
In some embodiments, the power-on protection circuit further comprises a status indicator light, wherein the status indicator light is connected in series with the controlled switch and used for displaying the working status of the power-on protection circuit with the self-checking function, so that a user can intuitively feel the status of the power-on protection circuit with the self-checking function and know the power-on process.
In some embodiments, the switching power supply is configured to convert an ac voltage of 220V into a dc operating voltage of 24V, and convert a high voltage of an external power supply into an operating voltage capable of driving the main control board to operate through the switching power supply.
In some embodiments, the operating voltage includes a first operating voltage and a second operating voltage, the delay module receives the first operating voltage, the main control board receives the second operating voltage, and the power supply requirement of the delay module and the power supply requirement of the main control board are met simultaneously when the power consumption voltages of the delay module and the main control board are different through outputting different voltages by the switching power supply.
In a second aspect, an embodiment of the present invention further provides a 3D printer, including the power-on protection circuit with a self-test function provided in any embodiment of the present invention, where:
the main control board comprises a printing control module, the printing control module receives working voltage to execute a printing task and generates a shutdown signal after the printing task is completed, and the controlled switch is further used for controlling the 3D printer to be in a cut-off state according to the shutdown signal so as to control the 3D printer to be powered off and shut down automatically after the printing is completed, so that the electric quantity waste is avoided and the safety is further improved.
In some embodiments, the main control board further includes a main control power supply module, which is disposed between the printing control module and the switching power supply, and is configured to control power supply of the main control board, so as to meet power supply requirements of different modules on the main control board, and facilitate power supply management of the main control board.
In some embodiments, the self-checking function is configured to detect whether the supply voltage of the main control power supply module and the print control module meets a preset requirement, if yes, the self-checking passes, if not, the self-checking does not pass, and when the self-checking is performed, the main control board is prevented from being burnt or damaged due to too large supply voltage or too small supply voltage, and only the main control power supply module and the print control module need to be self-checked to shorten the self-checking time.
The power-on protection circuit with the self-checking function and the 3D printer provided by the embodiment of the invention control the conduction state of an external power supply and a switching power supply through the closed state of a controlled switch, provide working voltage for a delay module and a main control board through the switching power supply, control the controlled switch to be in the closed state through the delay module in a delay way, realize that the switching power supply delays to supply power for the main control board, ensure that the main control board has enough power-on time to finish self-checking, and control the controlled switch to determine whether to start up according to the self-checking result of the main control board, in the embodiment, the self-checking process is added before the power-on to ensure that the main control board can be started up normally, improve the safety, realize the automatic power-on delayed power supply after the power-on protection circuit with the self-checking function by matching of the delay module and the controlled switch, and the user does not need to keep the power supply through long press of keys and the like, the user operation steps are simplified, and the user experience is improved.
Drawings
Fig. 1 is a schematic structural diagram of a power-on protection circuit with a self-test function according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power-on protection circuit with a self-test function according to a second embodiment of the present invention;
fig. 3 is a schematic diagram of another boot protection circuit with a self-test function according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of a power-on protection circuit with a self-test function according to a second embodiment of the present invention;
fig. 5 is a schematic circuit structure diagram of a 3D printer according to a third embodiment of the present invention;
fig. 6 is a schematic circuit structure diagram of another 3D printer according to a third embodiment of the present invention.
Description of the main elements
00 external power supply
10 controlled switch
11 Relay
12 self-recovery switch
13 signal control unit
20 switch power supply
30 time delay module
40 Main control board
41 print control module
42 main control power supply module
50 status indicator lamp
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings, not all of them.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Furthermore, the terms "first," "second," and the like may be used herein to describe various orientations, actions, steps, or elements, but the orientations, actions, steps, or elements are not limited by these terms. These terms are only used to distinguish one direction, action, step or element from another direction, action, step or element. For example, the first connection end may be referred to as a second connection end, and similarly, the second connection end may be referred to as a first connection end, without departing from the scope of the present invention. The first connection end and the second connection end are both connection ends, but they are not the same connection end, specifically, they may be an input end, another one is an output end, or both of them may be input/output ends. The terms "first", "second", etc. are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. It should be noted that when a portion is referred to as being "secured to" another portion, it can be directly on the other portion or there can be an intervening portion. When a portion is said to be "connected" to another portion, it may be directly connected to the other portion or intervening portions may be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Example one
The embodiment of the present invention provides a power-on protection circuit with a self-checking function, which is applicable to various devices with power-on operations, such as a 3D printer, the power-on protection circuit with a self-checking function provided in this embodiment includes a controlled switch 10, a switching power supply 20, a delay module 30 and a main control board 40, as shown in fig. 1, the power-on protection circuit with a self-checking function is connected to an external power supply 00, wherein:
the controlled switch 10 is provided between the external power supply 00 and the switching power supply 20, and controls on and off between the external power supply 00 and the switching power supply 20.
The controlled switch 10 is turned on when pressed by a user, so that the external power supply 00 instantaneously supplies power to the switching power supply 20 through the turned-on controlled switch 10, the switching power supply 20 is configured to generate an operating voltage when the external power supply 00 is turned on, and the delay module 30 is configured to receive the operating voltage during the instantaneous power supply to generate a delay signal. When a user presses a power-on key, the controlled switch 10 is turned on according to the pressing operation of the user, and when the controlled switch 10 is turned on, the switching power supply 20 receives power supply, so that the time length of instant power supply is determined according to the pressing time length of the user, the power-on operation of a general user is to quickly press the power-on key, and the power supply time length of the switching power supply 20 caused by the pressing of the user can be regarded as a very short moment, generally within 0.5 second.
The switching power supply 20 is configured to convert the voltage of the external power supply 00 into a working voltage, and may specifically implement voltage stabilization, voltage transformation, and other functions. The input terminal of the switching power supply 20 is connected to the external power supply 00 through the controlled switch 10, and the output terminal (which may include a plurality of output terminals) of the switching power supply 20 is connected to the delay module 30 and the main control board 40.
The delay module 30 is connected to the output terminal of the switching power supply 20, and maintains the output signal when receiving the delay of the operating voltage output by the switching power supply 20, and for convenience of distinguishing, the signal output by the delay module 30 is referred to as a delay signal. The delay time of the delay module 30 for keeping the output signal after receiving the working voltage is determined by the specific structure or related setting of the delay module 30, and may be determined by itself according to the actual requirement, and may exemplarily adopt 3S.
The controlled switch 10 controls self time-delay conduction according to the time-delay signal so that an external power supply 00 supplies power to the switch power supply 20 in a time-delay mode through the controlled switch 10 conducting in a time-delay mode, the main control board 40 is used for receiving the working voltage during the time-delay power supply period to start a self-checking function, and a power-on and power-off signal is output according to a self-checking result.
The main control board 40 is connected to an output terminal of the switching power supply 20, and receives an operating voltage and drives the printer device. In order to improve the security, in this embodiment, the main control board 40 further provides a self-checking function, the self-checking function is started to detect each module on the main control board 40 before the power on operation, if all the detection results are passed, the detection result is normal, the main control board 40 outputs a power on signal, if there is a module that fails in the detection, the main control board 40 outputs a power off signal (no output of the main control board 40 may be regarded as a power off signal), and in this embodiment, the control signals output by the main control board 40 and used for controlling the controlled switch 10 are collectively referred to as power on and power off signals.
Specifically, the self-checking function of the main control board 40 is used to detect whether the power supply voltage of each module on the main control board 40 is normal, and if the power supply voltage is abnormal, the main control board 40 may be damaged or even burned when the main control board operates. More specifically, each module on the main control board 40 has a corresponding standard voltage interval, and if the power supply voltage detected during self-test is not within the corresponding standard voltage interval, the self-test of the corresponding module does not pass, otherwise, the self-test of the corresponding module passes.
The controlled switch 10 controls the continuous conduction state of the controlled switch according to the on/off signal to control whether the printer device is normally powered on.
The controlled switch 10 comprises a first connection end, a second connection end, a first control end and a second control end, the first connection end is connected with an external power supply 00, the second connection end is connected with the switching power supply 20, the first control end is connected with the delay module 30, the second control end is connected with the main control board 40, and the controlled switch 10 controls the conduction between the first connection end and the second connection end according to the delay signal, so that the external power supply 00 supplies power to the switching power supply 20 through the conducted controlled switch 10; the controlled switch 10 controls the connection or the disconnection between the first connection end and the second connection end according to the on/off signal.
The first connecting end and the second connecting end are used for realizing the switching action through switching on/off, and the first control end and the second control end are used for receiving control signals (including delay signals and on-off signals). The controlled switch 10 is normally open, that is, the normal state between the first connection end and the second connection end is closed, the controlled switch 10 can be switched to be closed according to the control signal and the external stress, and the controlled switch 10 has a self-recovery capability, and when the control signal (including the delay signal and the power-on signal) and/or the external stress is not received, the first connection end and the second connection end can be automatically recovered from the on state to the off state, that is, the controlled switch 10 can be recovered from the on state to the off state.
When the power-on protection circuit with the self-checking function in this embodiment works, the controlled switch 10 is initially turned off, the switching power supply 20, the delay module 30 and the main control board 40 are all in a power-off state, the controlled switch 10 can be switched to be turned on and then turned off again under the action of an external force or the excitation of a separate trigger switch (pressed by a user as a power-on operation), the switching power supply 20 and the external power supply 00 are turned on and started at the instant when the controlled switch 10 is turned on, the delay module 30 receives a working voltage output by the switching power supply 20, the delay module 30 delays for a preset time duration, for example, 3S (3 seconds), to keep outputting a delay signal to the controlled switch 10, the controlled switch keeps in a turned-on state within 3S based on the control of the delay signal, so that the external power supply 00 supplies power to the switching power supply 20 through the turned-on controlled switch 10 again, and the switching power supply 20 keeps outputting the working voltage to the main control board 40 within 3S, and the delay module 30 returns to the off state after 3S; the main control board 40 completes self-checking in 3S, and after the self-checking is completed, the main control board 40 outputs a startup and shutdown signal to the controlled switch 10 according to a self-checking result: if the self-test is passed, a power-on signal is output, if the self-test is not passed, a power-off signal is output (or a signal which is not received is regarded as a power-off signal), the controlled switch 10 keeps a closed state when receiving the power-on signal, the main control board 40 executes a power-on program to start up, and if the controlled switch does not receive the signal (regarded as receiving the power-off signal), the controlled switch restores to an open state after 3S of time delay of the time delay module 30, and the power-on fails.
In some embodiments, the delay module 30 includes an RC delay circuit that remains on when the operating voltage delay is received.
The RC delay circuit has simple structure and low cost, can meet the delay requirement of the invention, and the delay time can be realized by adjusting the resistor R and the capacitor C. In this embodiment, whether the RC delay circuit is turned on or not is used as the delay signal, when the RC delay circuit is turned on, the controlled switch 20 is turned on, and the first connection terminal and the second connection terminal are kept turned on, and when the RC delay circuit is turned off, the controlled switch 20 is turned back off, and the first connection terminal and the second connection terminal are turned off.
In some embodiments, the switching power supply 20 is configured to convert 220V ac voltage to 24V dc operating voltage.
The external power source 10 generally adopts a power grid for power distribution, the power grid distribution voltage is usually 220V and is an alternating current, but the operating voltage of the control board 40 is generally much lower than the power grid distribution voltage, and more direct current is used, the operating voltage of the control board 40 in this embodiment is 24V, so the switching power source 20 needs to convert the 220V alternating current voltage of the external power source 10 into a 24V direct current operating voltage to drive the control board 40 to normally operate.
In some embodiments, the working voltage includes a first working voltage and a second working voltage, the delay module 30 receives the first working voltage, and the main control board 40 receives the second working voltage.
The working voltages of the delay module 30 and the main control board 40 may be the same or different, in general, the voltage of the external power supply 00 is 220V, while the working voltage of the main control board 40 of the 3D printer is 24V, the delay module 30 does not need a certain working voltage in some cases, for example, when the RC delay circuit cooperates with the relay to realize delay conduction, the RC delay circuit actually supplies power to the relay 11, and the working voltage of the relay 11 has multiple conditions, such as 3V, 5V, 6V, 24V, 220V, and the like, so that when the working voltage of the relay 11 is different from the working voltage of the main control board 40, the switching power supply 20 needs to output different working voltages, in the above embodiment in which the RC delay circuit cooperates with the relay 11, the first voltage may be 220V, and the second voltage is 24V.
The embodiment provides a power-on protection circuit with a self-checking function, which controls the conduction state of an external power supply 00 and a switch power supply 20 through the closing state of a controlled switch 10, provides working voltage for a delay module and a main control board 40 through the switch power supply 20, controls the controlled switch 10 to be in the closing state through a delay module 30 in a delay way, and realizes that the switch power supply 20 delays to supply power to the main control board 40, so that the main control board 40 has enough power-on time to complete self-checking, and controls the controlled switch 10 to determine whether to start or not according to the self-checking result of the main control board 40, in the embodiment, the self-checking process is added before starting to ensure that the main control board 40 can be started normally, so that the safety is improved, the power-on protection circuit with the self-checking function can automatically delay power supply after being powered on by the cooperation of the delay module 30 and the controlled switch 10, and the self-checking power supply is not required to be kept through a long press of a power-on key and the like by a user, the user operation steps are simplified, and the user experience is improved.
Example two
The present embodiment provides a power-on protection circuit with a self-test function on the basis of the previous embodiment, which mainly differs from the first embodiment in that a part of the contents of the first embodiment is further explained and supplemented, for example, a relay 11 and a self-recovery switch 12 are arranged in parallel in a controlled switch 10, and specifically includes:
as shown in fig. 2, the controlled switch 10 includes a relay 11 and a self-recovery switch 12 connected in parallel, the relay 11 is normally open, and the self-recovery switch 12 is closed when pressed by a user to turn on the external power supply 00 and the switching power supply 20; when the delay module 30 is in the on state, the relay 11 is kept closed; when the delay module 30 is in the off state, the relay 11 controls itself to be closed or opened according to the on/off signal. For the delay module 30 using the RC delay circuit, the on/off of the delay module 30 is determined by the on/off of the RC delay circuit.
The relay 11 is adapted to control on/off of the relay 11 with an on state of the RC delay circuit as a delay signal: the RC delay circuit is switched on, the relay 11 is switched on, two contacts of the relay 11 are contacted to realize the switching on, and the controlled switch 10 is switched on; when the RC delay circuit is cut off, the contact of the relay 11 is separated, and the controlled switch 10 is switched off. Of course, the above process is that the relay 11 is controlled by only the delay signal, and actually, when the RC delay circuit of the relay 11 is in the off state, the control signal (including the on/off signal) output by the main control board 40 controls whether the relay is in the on state: when the main control board 40 outputs a power-on signal, the relay 11 is still kept in a conducting state, and when the main control board 40 outputs a power-off signal, the contacts of the relay 11 are separated.
The self-recovery switch 12 is used to instantly switch on the first connection end and the second connection end of the controlled switch 10 according to the power-on operation of the user to realize the power-on of the delay module 30, which is actually equivalent to that the power-on according to the user is pressed and the power-on according to the control signal is independent, so that the relay 11 only needs to control the conduction between the external power supply 00 and the switch power supply 20 according to the delay signal and the power-on/off signal, and does not need to receive the pressing operation of the user. In fact, the power-on is carried out through the relay 11 according to the pressing operation of the user, which causes the structure of the start key of the device to be complicated, and has adverse effects on the circuit planning and the structure of the printer device, and the self-recovery switch 12 has a simpler structure and a smaller volume, and is more convenient for the circuit planning of the printer device.
In some embodiments, as shown in fig. 3, the controlled switch 10 further includes a signal control unit 13, where the signal control unit 13 is connected to the main control board 40 and the relay 11, and is configured to recognize the power on/off signal and control a continuous on state of the relay 11 according to the power on/off signal.
The on/off signal output by the main control board 40 needs to be based on a specific signal control circuit to control the on-state of the controlled switch 10, and the specific structure of the signal control unit 13 is designed based on the specific representation form of the on/off signal, and if the power-on signal is at a high level and the power-off signal is at a low level, the signal control unit 13 needs to identify the high and low levels and control the continuous on of the relay 11 according to the high level.
In some embodiments, as shown in fig. 4, a status indicator lamp 50 is further disposed on the power-on protection circuit with self-test function, and the status indicator lamp 50 is connected in series with the controlled switch 10 for displaying an operating status of the power-on protection circuit with self-test function.
In order to facilitate the user to know the working state of the power-on protection circuit with self-checking function, the present embodiment further arranges a status indicator lamp 50 in the power-on protection circuit with self-checking function, and the most intuitive reaction of the working state of the power-on protection circuit with self-checking function is the on/off of the controlled switch 10, so the status indicator lamp 60 is connected in series with the controlled switch 10 in the present embodiment, when the controlled switch 10 is turned on, the status indicator lamp 60 is turned on, and when the controlled switch 10 is turned off, the status indicator lamp 60 is turned off, in actual operation, the controlled switch 10 is turned on in a delayed manner after being powered on, the status indicator lamp 60 is kept on in a delayed manner, and if the power-on is successful, the controlled switch 10 is kept on, the status indicator lamp 60 is on for a long time, if the startup fails, the controlled switch 10 is turned off, and the status indicator lamp 60 is turned off after being kept on for a delay, so that the startup failure caused by failure of self-test can be judged. More specifically, if the status indicator lamp 60 is turned off after power-on, it is described that the controlled switch 10 may malfunction, although the more specific malfunction situation is not illustrated here, the above example is also merely an example and is not limited, and actually, the malfunction situation may be determined by itself according to the specific setting of the power-on protection circuit with the self-checking function.
The embodiment provides a start-up protection circuit with a self-checking function, provides a self-recovery switch 12 and a relay 11 which are definite in division of labor, and splits the function of a controlled switch 10 through the self-recovery switch 12, so that the circuit planning is more free and convenient, and further provides a status indicator lamp 50, and the working state of the start-up protection circuit with the self-checking function is displayed through the status indicator lamp 50, so that a user can conveniently know whether the start-up is normally carried out.
EXAMPLE III
A third embodiment of the present invention provides a 3D printer, which can be booted using the boot protection circuit with the self-checking function provided in any embodiment of the present invention, as shown in fig. 5, in the 3D printer:
the main control board 40 includes a printing control module 41, the printing control module 41 receives a working voltage to execute a printing task and generates a shutdown signal after the printing task is completed, and the controlled switch 10 is further configured to control itself to be in a cut-off state according to the shutdown signal so as to control the 3D printer to power off and shutdown.
The print control module 41 is a core module of the main control board 40, and is mainly used for executing a print job. Among the prior art, the 3D printer mostly keeps the start after printing the completion, needs the manual shutdown of user, often has the user to forget the condition of shutdown, causes the power consumption extravagant and has the potential safety hazard, among the 3D printer that this embodiment provided. After the printing is finished, the printing control module 41 outputs a shutdown signal to the controlled switch 10, and the controlled switch 10 disconnects the first connection end and the second connection end after receiving the shutdown signal, so that the controlled switch 10 is in a cut-off state, at this time, the switching power supply 20 is powered off, and the 3D printer is powered off to finish shutdown.
In some embodiments, as shown in fig. 6, the main control board 40 further includes a main control power module 42, and the main control power module 42 is disposed between the print control module 41 and the switching power supply 20, and is used for supplying power to each module in the main control board 40. Different chip modules and circuit modules are arranged on the main control board 40, and the required voltage and current of different modules may be different, so that the main control power supply module 42 is arranged to uniformly perform power supply control, and management and power supply are facilitated.
In some embodiments, the self-checking function is configured to detect whether the supply voltages of the main control power supply module 42 and the print control module 41 meet a preset requirement, if yes, the self-checking passes, if not, the self-checking does not pass, and when the main control board 40 performs the self-checking, the self-checking objects are the main control power supply module 42 and the print control module 41, and it is not necessary to perform self-checking on each module on the main control board 40, so as to simplify a self-checking process and conveniently and quickly determine the power consumption safety of the main control board 40. The preset requirement includes a standard voltage interval, whether the preset requirement is met or not can be judged by the printing control module 41 according to the detected power supply voltage to be within the standard voltage interval or not, if so, the self-test is passed, the starting signal is output, and if not, the self-test is not passed, the signal can not be output, and the shutdown signal can also be output.
This embodiment provides a 3D printer, provides printing control module in this 3D printer main control board, can export shutdown signal and accomplish the shutdown by oneself after printing the completion, further still provides the main control power supply module, carries out the unified management of main control board power supply, accomplishes fast when making things convenient for the main control board self-checking.
In the description herein, references to the description of the term "present embodiment," "other embodiments," or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (8)

1. The utility model provides a start protection circuit that possesses self-checking function, includes controlled switch, switching power supply, time delay module and main control board, its characterized in that:
the controlled switch is conducted when pressed by a user, so that an external power supply instantaneously supplies power to the switching power supply through the conducted controlled switch, the switching power supply is used for generating working voltage when the external power supply is connected, and the delay module is used for receiving the working voltage during instantaneous power supply to generate a delay signal;
the controlled switch controls self time-delay conduction according to the time-delay signal so that an external power supply supplies power to the switching power supply in a time-delay way through the time-delay conducted controlled switch, and the main control board is used for receiving the working voltage during the time-delay power supply period to start a self-checking function and outputting a startup and shutdown signal according to a self-checking result;
the controlled switch controls the continuous conduction state of the controlled switch according to the startup and shutdown signal so as to control whether the printer equipment is normally started to supply power;
the controlled switch comprises a relay and a self-recovery switch which are connected in parallel, the relay is disconnected in a normal state, and the self-recovery switch is closed when pressed by a user to conduct an external power supply and the switching power supply; when the time delay module is in a conducting state, the relay is kept closed; when the delay module is in a cut-off state, the relay controls the relay to be closed or opened according to the startup and shutdown signal;
the controlled switch also comprises a signal control unit which is used for identifying the on-off signal and controlling the continuous conduction state of the relay according to the on-off signal.
2. The power-on protection circuit with self-test function according to claim 1, wherein: the delay module comprises an RC delay circuit, and the RC delay circuit keeps conducting when receiving the working voltage delay.
3. The power-on protection circuit with self-test function according to claim 1, wherein: the power-on protection circuit further comprises a state indicating lamp, wherein the state indicating lamp is connected with the controlled switch in series and used for displaying the working state of the power-on protection circuit with the self-checking function.
4. The power-on protection circuit with self-test function according to claim 1, wherein: the switching power supply is used for converting 220V alternating current voltage into 24V direct current working voltage.
5. The power-on protection circuit with self-test function according to claim 1, wherein: the working voltage comprises a first working voltage and a second working voltage, the time delay module receives the first working voltage, and the main control board receives the second working voltage.
6. A 3D printer comprising the power-on protection circuit with self-test function as claimed in any one of claims 1 to 5, characterized in that:
the main control board comprises a printing control module, the printing control module receives working voltage to execute a printing task and generates a shutdown signal after the printing task is completed, and the controlled switch is further used for controlling the 3D printer to be in a cut-off state according to the shutdown signal so as to control the 3D printer to be powered off and shut down.
7. The 3D printer of claim 6, wherein: the main control board further comprises a main control power supply module, the main control power supply module is arranged between the printing control module and the switching power supply and used for controlling power supply of the main control board.
8. The 3D printer of claim 7, wherein: the self-checking function is used for detecting whether the power supply voltage of the main control power supply module and the printing control module meets the preset requirement or not, if yes, the self-checking is passed, and if not, the self-checking is not passed.
CN202011384732.7A 2020-11-30 2020-11-30 Starting protection circuit with self-checking function and 3D printer Active CN112373022B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202011384732.7A CN112373022B (en) 2020-11-30 2020-11-30 Starting protection circuit with self-checking function and 3D printer
PCT/CN2020/141112 WO2022110485A1 (en) 2020-11-30 2020-12-29 Power-on self-test protection circuit and 3d printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011384732.7A CN112373022B (en) 2020-11-30 2020-11-30 Starting protection circuit with self-checking function and 3D printer

Publications (2)

Publication Number Publication Date
CN112373022A CN112373022A (en) 2021-02-19
CN112373022B true CN112373022B (en) 2022-06-14

Family

ID=74589534

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011384732.7A Active CN112373022B (en) 2020-11-30 2020-11-30 Starting protection circuit with self-checking function and 3D printer

Country Status (2)

Country Link
CN (1) CN112373022B (en)
WO (1) WO2022110485A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113489125A (en) * 2021-07-09 2021-10-08 骆驼集团武汉光谷研发中心有限公司 Power control and output circuit of photovoltaic energy storage battery system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2131236Y (en) * 1992-08-14 1993-04-28 孙凯 Multifunctional protector for power use
CN104635520A (en) * 2013-11-12 2015-05-20 重庆金美通信有限责任公司 Power supply switch control circuit with power down delay function
CN105955082A (en) * 2016-05-24 2016-09-21 乐视控股（北京）有限公司 Power socket and power on-off control method and device thereof
CN207359654U (en) * 2017-07-28 2018-05-15 深圳市创必得科技有限公司 A kind of 3D printer controlling cashier power-cut-off contiuous printing control circuit
CN208871665U (en) * 2018-07-18 2019-05-17 徐州海德测控技术有限公司 A kind of new ultra-violet flame detector
CN209069963U (en) * 2018-10-26 2019-07-05 北京华峰测控技术股份有限公司 A kind of different hardware board power-on time sequence control circuit in test macro

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2346528A1 (en) * 1973-09-15 1975-03-27 Tesch Kg E Variable time base for switching - on-off switching of power circuit controlled by input transducer with pre-selected on-off periods to a given sequence
JPH02161286A (en) * 1988-12-13 1990-06-21 Kobe Steel Ltd Controller method for heater of hot isostatic pressure pressurizer
JP4718384B2 (en) * 2006-07-06 2011-07-06 パナソニック株式会社 Protective device
US9323235B2 (en) * 2011-04-11 2016-04-26 Rockwell Automation Technologies, Inc. Industrial control system with distributed motion planning
CN202142841U (en) * 2011-06-24 2012-02-08 广州市君盘实业有限公司 Switch power supply output short circuit protective circuit
CN202472301U (en) * 2012-03-03 2012-10-03 兰如根 Low-current-started energy-saving control circuit
CN202443270U (en) * 2012-03-06 2012-09-19 兰莉莉 Standby switching-off controller
CN203084468U (en) * 2013-03-18 2013-07-24 兰如根 Standby control circuit
CN203352132U (en) * 2013-05-16 2013-12-18 山东润泰智能电气有限公司 Full-automatic over-voltage and under-voltage delay protector
CN203449609U (en) * 2013-08-21 2014-02-26 青岛奥德莱三维打印有限公司 Automatic material conveying device of 3D printer
CN103744343B (en) * 2014-01-24 2017-01-18 深圳市劲拓自动化设备股份有限公司 Delay control method and system during equipment starting
CN204759081U (en) * 2015-05-14 2015-11-11 深圳市三诺数字科技有限公司 Switching on and shutting down system
CN105938335B (en) * 2016-07-06 2018-07-03 焦作市韵植电气自动化有限公司 A kind of energy saver of automatic elimination standby power consumption
CN205882701U (en) * 2016-08-01 2017-01-11 珠海格力电器股份有限公司 Power supply self-adaptive adjusting device
US10520919B2 (en) * 2017-05-01 2019-12-31 General Electric Company Systems and methods for receiving sensor data for an operating additive manufacturing machine and mapping the sensor data with process data which controls the operation of the machine
CN107465181B (en) * 2017-08-16 2018-11-27 艾德克斯电子（南京）有限公司 A kind of high-power DC power supply of band SENSE self-test defencive function
WO2019067409A1 (en) * 2017-09-29 2019-04-04 Walmart Apollo, Llc Controlled 3-d printing
CN208241570U (en) * 2018-05-23 2018-12-14 杭州先临爱打印科技有限公司 Smart electronics power switch and the 3D printer for configuring the switch
CN108628431A (en) * 2018-06-06 2018-10-09 深圳市华思旭科技有限公司 Electronic equipment and its certainly energy consumption control circuit
CN109193604A (en) * 2018-10-24 2019-01-11 陕西航空电气有限责任公司 Aircraft AC electrical electricity generation system transient overvoltage protector
CN208922107U (en) * 2018-10-29 2019-05-31 佛山市宏石激光技术有限公司 A kind of exchange workbench of laser cutting machine control system
CN109672257B (en) * 2018-12-28 2022-10-28 长园深瑞继保自动化有限公司 Flexible control method and system for auxiliary power supply of direct current charging module
CN109870962A (en) * 2019-04-08 2019-06-11 深圳市搏世通用科技开发有限公司 A kind of control system and its control method of hair dryer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2131236Y (en) * 1992-08-14 1993-04-28 孙凯 Multifunctional protector for power use
CN104635520A (en) * 2013-11-12 2015-05-20 重庆金美通信有限责任公司 Power supply switch control circuit with power down delay function
CN105955082A (en) * 2016-05-24 2016-09-21 乐视控股（北京）有限公司 Power socket and power on-off control method and device thereof
CN207359654U (en) * 2017-07-28 2018-05-15 深圳市创必得科技有限公司 A kind of 3D printer controlling cashier power-cut-off contiuous printing control circuit
CN208871665U (en) * 2018-07-18 2019-05-17 徐州海德测控技术有限公司 A kind of new ultra-violet flame detector
CN209069963U (en) * 2018-10-26 2019-07-05 北京华峰测控技术股份有限公司 A kind of different hardware board power-on time sequence control circuit in test macro

Also Published As

Publication number Publication date
CN112373022A (en) 2021-02-19
WO2022110485A1 (en) 2022-06-02

Similar Documents

Publication Publication Date Title
CN206225690U (en) Intelligent safety socket
CN101639675B (en) Efficient energy-saving switch circuit
US20230006446A1 (en) Method and apparatus for intelligent splitting and controlling of a high voltage outlet
CN102639047B (en) Apparatus for providing zero standby power control in an appliance
CN104932335B (en) Control method and device for jack working state
AU2010229495B2 (en) System and method for altering a user interface of a power device
CN100520681C (en) Computer, function control method thereof and device having functions of sleeping/awakening
CN112373022B (en) Starting protection circuit with self-checking function and 3D printer
CN101211133A (en) Image forming apparatus and control method thereof
CN104461664B (en) MCU start-up mode selection circuits
EP2622711B1 (en) Electronic control device and method for reducing stand-by state energy consumption of an electric household appliance
CN102789300A (en) Power supply
CN214983253U (en) Power-on self-checking protection circuit and 3D printer
US20100271848A1 (en) Circuit configuration for operating a household appliance
CN104753405A (en) Method for controlling synchronous switch change in medium voltage inverter
CN108700927A (en) For reducing the power supplier and method of the stand-by electric of electronic equipment
CN201546062U (en) Entire machine power interruption control device for washing machines
CN202076772U (en) Intelligent power converter
CN113265842B (en) Power failure memory method of washing machine display panel and washing machine
KR101091772B1 (en) Cutoff switch for saving standby power
CN210678794U (en) Electric shaver with electric quantity reminding function
JPH10244095A (en) Electronic or electric apparatus
CN209169540U (en) A kind of slotting disk of intelligence electricity cut-off type
CN208822283U (en) food processor
CN112941839A (en) Safety protection measure of washing machine with heating function

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information
CB02 Change of applicant information

Address after: 1808, Jinxiu Hongdu building, Meilong Avenue, Xinniu community, Minzhi street, Longhua District, Shenzhen City, Guangdong Province (office address)

Applicant after: Shenzhen chuangxiang 3D Technology Co.,Ltd.

Address before: 518000 floor 1201 and 11, building 3, Jincheng Industrial Park, Tongsheng community, Dalang street, Longhua District, Shenzhen City, Guangdong Province (office address); floor 1 and 4, building F, building 11, yujianfeng Industrial Park, 289 Huafan Road (production address)

Applicant before: Shenzhen Chuangxiang 3D Technology Co.,Ltd.

GR01 Patent grant
GR01 Patent grant