Power supply control system

Abstract

The utility model discloses a power supply control system, and relates to the technical field of power supply, and when the power supply control system supplies power to electronic equipment, the on-off state of a connection loop between an alternating current power supply and the electronic equipment is controlled through a power-on control circuit, so that the electronic equipment is controlled to be powered on or powered off. And in the process from power-on to power-off completion of the electronic equipment, collecting a state detection signal fed back by the electronic equipment through the main control circuit. If the voltage of the state detection signal exceeds the preset voltage, it is judged that the voltage received by the electronic equipment in the process is abnormal, and a discharging signal is correspondingly sent to a discharging circuit so as to control the discharging circuit to discharge the electronic equipment in time. Through the above mechanism, when power is supplied to the electronic equipment, the electronic equipment can be effectively protected from being damaged by abnormal voltage or abnormal current generated by power-on or power-off, and the safety of the electronic equipment is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power supply, in particular to a power supply control system. BACKGROUND

[0002] In the prior art, when some electronic devices with high driving voltage requirements are powered, the power supply connected is generally a high-voltage power supply, and the power-on or power-off process is realized by connecting or disconnecting the high-voltage power supply. In the process of connecting or disconnecting the high-voltage power supply, the voltage will change greatly, which will generate an arc, and the transient voltage and transient current of the arc may cause damage to the electronic components inside the electronic device. CONTENT OF THE UTILITY MODEL

[0003] The main purpose of the present application is to provide a power supply control system, which aims to solve the technical problem of how to reduce abnormal current or abnormal voltage in the power supply system.

[0004] To achieve the above purpose, the present application provides a power supply control system, which comprises a power-on control circuit, a main control circuit and a discharge circuit.

[0005] The power-on control circuit is connected with an alternating current power supply, the discharge circuit and the main control circuit, and is also used for connecting the power supply end of an electronic device; the main control circuit is connected with the discharge circuit and is also used for connecting the state feedback end of the electronic device.

[0006] The power-on control circuit is used for controlling the on-off state of the connection loop between the alternating current power supply and the electronic device.

[0007] The main control circuit is used for acquiring the state detection signal fed back by the electronic device before the on-off state is switched to the on state and after the on-off state is switched to the off state, and sending a discharge signal to the discharge circuit when the voltage of the state detection signal exceeds a preset voltage.

[0008] The discharge circuit is used for discharging the electronic device when receiving the discharge signal.

[0009] The application provides a power supply control system, which comprises a power-on control circuit, a main control circuit and a discharge circuit; the power-on control circuit is connected with an alternating current power supply, the discharge circuit and the main control circuit respectively, and is also used for connecting a power supply end of an electronic device; the main control circuit is connected with the discharge circuit and is also used for connecting a state feedback end of the electronic device; the power-on control circuit is used for controlling the on-off state of a connection loop between the alternating current power supply and the electronic device; the main control circuit is used for acquiring a state detection signal fed back by the electronic device before the on-off state is switched to a conducting state and after the on-off state is switched to an off state, and sending a discharge signal to the discharge circuit when the voltage of the state detection signal exceeds a preset voltage; and the discharge circuit is used for discharging the electronic device when the discharge signal is received.

[0010] When the electronic device is powered, the on-off state of the connection loop between the alternating current power supply and the electronic device is controlled by the power-on control circuit, so that the electronic device is powered on or powered off. During the process of powering on the electronic device to completing powering off, the state detection signal fed back by the electronic device is acquired by the main control circuit. If the voltage of the state detection signal exceeds the preset voltage, it is determined that the voltage received by the electronic device in the process is abnormal, and a discharge signal is sent to the discharge circuit to control the discharge circuit to discharge the electronic device in time. Through the above mechanism, when the electronic device is powered, the electronic device can be effectively protected from being damaged by abnormal voltage or abnormal current generated by powering on or powering off, and the safety of the electronic device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] The drawings incorporated into the specification and forming a part thereof, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application.

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows, and obviously, other drawings can also be obtained by those skilled in the art without creative labor under the premise of these drawings.

[0013] Figure 1 The structural connection diagram provided for the power supply control system embodiment one of the present application;

[0014] Figure 2 The circuit connection diagram provided for the power supply control system embodiment two of the present application;

[0015] Figure 3 The circuit connection diagram provided for the power supply control system embodiment three of the present application.

[0016] The purpose realization, functional characteristics and advantages of the present application will be further explained with reference to the embodiments and the drawings. DETAILED DESCRIPTION

[0017] It should be understood that the specific embodiments described herein are merely intended to explain the technical solutions of the present application, and are not intended to limit the present application.

[0018] In order to better understand the technical solutions of the present application, the following will be described in detail in combination with the accompanying drawings and specific embodiments.

[0019] The present application proposes a power supply control system of the first embodiment, please refer to Figure 1 , power-on control circuit 10, main control circuit 20 and discharge circuit 30;

[0020] The power-on control circuit 10 is connected with the AC power supply U0, the discharge circuit 30 and the main control circuit 20 respectively, and is also used for connecting the power supply end of the electronic device M; the main control circuit 20 is connected with the discharge circuit 30, and is also used for connecting the state feedback end of the electronic device M;

[0021] The power-on control circuit 10 is used for controlling the on-off state of the connection loop between the AC power supply U0 and the electronic device M;

[0022] The main control circuit 20 is used for acquiring the state detection signal fed back by the electronic device M before the on-off state is switched to the on state and after the on-off state is switched to the off state, and sending the discharge signal to the discharge circuit 30 when the voltage of the state detection signal exceeds the preset voltage;

[0023] The discharge circuit 30 is used for discharging the electronic device M when receiving the discharge signal.

[0024] It should be understood that the main control circuit 20 can be a control circuit built around a central processing unit (CPU), which can be integrated with a variety of functional circuits such as memory, timer and counter, and also has multiple I / O ports, communication interfaces and interrupt systems, and can realize the functions of identifying, processing data, information, signals and instructions.

[0025] It should be noted that the electronic device M refers to an electronic product with high driving voltage requirements, such as industrial robots, mechanical arms, etc. The alternating current power supply U0 can be 220V mains, which can form a connection loop with the electronic device M through the power-on control circuit 10, thereby supplying power to the electronic device M through the connection loop. The power-on control circuit 10 is used to control the on-off state of the connection loop. When the on-off state of the connection loop is switched to the on state, the alternating current power supply U0 can be connected to the power supply end of the electronic device M through the power-on control circuit 10 and supply power to the electronic device M, that is, to power on the electronic device M. When the on-off state of the connection loop is switched to the off state, the alternating current power supply U0 cannot be connected to the power supply end of the electronic device M through the power-on control circuit 10 and cannot supply power to the electronic device M, that is, to power off or power down the electronic device M.

[0026] It is easy to understand that in the present embodiment, the electronic device M also has a state feedback end, which is connected with the main control circuit 20. The electronic device M will feed back a corresponding state detection signal to the main control circuit 20 based on the voltage received by the power supply end. If the voltage received by the power supply end of the electronic device M is too high and exceeds the safe voltage of the electronic device M, a state detection signal with a voltage exceeding the preset voltage will be fed back to the main control circuit 20. When the main control circuit 20 detects that the voltage of the state detection signal exceeds the preset voltage, it can be determined that the voltage or current received by the current electronic device M is too large and needs to be discharged, and then a high-level or low-level discharge signal will be sent to the discharge circuit 30 to drive the discharge circuit 30 to work. When the discharge circuit 30 receives the discharge signal, it can discharge the electronic device M, so that the voltage received by the electronic device M returns to the normal voltage, so as to protect the electronic device M from being damaged by the high voltage received.

[0027] It is worth noting that in the present embodiment, the state detection signal can be an electrical signal generated based on the voltage received by the power supply end of the electronic device M, which can represent the working state of the electronic device M, including the power-on state, power-off state, running state, standby state, etc. In one case, the state detection signal can be a digital signal with high and low level changes. The voltage value range of the state detection signal will change with the size of the voltage received by the power supply end. Once the high level of the state detection signal exceeds the originally set high level voltage value or the low level exceeds the originally set low level voltage value by a certain value, it can be determined that the power supply end of the current electronic device M has received an excessive abnormal voltage or current, which may cause damage to the electronic device M. Therefore, in this case, the preset voltage should be understood as a higher voltage corresponding to the high level and a lower voltage corresponding to the low level.

[0028] Through the above mechanism, when the electronic device M is powered by the high-voltage power supply, once it is detected that the electronic device M receives abnormal voltage or abnormal current due to power-on or power-off, the electronic device M is automatically discharged, thereby effectively protecting the electronic device M from being damaged due to receiving arc generated by high-voltage power-on or power-off, and improving the safety of the electronic device M.

[0029] The application provides a power supply control system. When the electronic device is powered, the power supply control system controls the on-off state of the connection circuit between the AC power supply and the electronic device through the power-on control circuit, thereby controlling the power-on or power-off of the electronic device. During the process of power-on to power-off of the electronic device, the main control circuit collects the state detection signal fed back by the electronic device. If the voltage of the state detection signal exceeds the preset voltage, it is determined that the electronic device receives abnormal voltage during the process, and a discharge signal is sent to the discharge circuit to control the discharge circuit to discharge the electronic device in time. Through the above mechanism, when the electronic device is powered, the electronic device can be effectively protected from being damaged due to abnormal voltage or abnormal current generated by power-on or power-off, thereby improving the safety of the electronic device

[0030] Based on the first embodiment of the application, in the second embodiment of the application, the same or similar contents as the above embodiment one can be referred to the above introduction, and will not be described in detail. On this basis, please refer to Figure 2 , the power supply control system further comprises a first power conversion circuit 40;

[0031] The first power conversion circuit 40 is connected to the power-on control circuit 10, the discharge circuit 30 and the power supply end of the electronic device M respectively.

[0032] The first power conversion circuit 40 is configured to convert the high-voltage AC power provided by the AC power supply U0 into first low-voltage DC power when the power-on control circuit 10 is connected to the AC power supply U0, and transmit the first low-voltage DC power to the electronic device M.

[0033] It should be noted that the high-voltage AC power can be understood as 220V AC power, and correspondingly, the first low-voltage DC power can be understood as a kind of DC power required by the electronic device M, for example, 50V DC power. In this embodiment, for some electronic devices M, they do not support direct power supply by AC power, and need to be powered by first DC power with relatively low voltage, so a first power conversion circuit 40 can be arranged in the connection circuit between the power-on control circuit 10 and the electronic device M to convert the high-voltage AC power provided by the AC power supply U0 into the first DC power transmitted to the electronic device M. At this time, it can also be understood that the power-on control circuit 10 can control the on-off state of the connection circuit between the AC power supply U0 and the first power conversion circuit 40.

[0034] In a specific implementation, when the power-on control circuit 10 switches the on-off state of the connection loop of the AC power supply U0 and the first power conversion circuit 40 to the on state, the AC power supply U0 is connected to the power supply end of the electronic device M in sequence through the power-on control circuit 10 and the first power conversion circuit 40, and the first power conversion circuit 40 can convert the high-voltage AC power provided by the AC power supply U0 into first low-voltage DC power and transmit the converted first low-voltage DC power to the power supply end of the electronic device M to supply power to it.

[0035] It is worth noting that in the present embodiment, the discharge circuit 30 can not be directly connected to the power supply end of the electronic device M at this time, but can be connected to the high-voltage side and / or the low-voltage side of the first power conversion circuit 40, thereby indirectly discharging the electronic device M by directly discharging the first power conversion circuit 40, which can make the discharging process more rapid and further improve the safety of the electronic device M.

[0036] Further, in the present embodiment, the discharge signal includes a high-voltage discharge signal and a low-voltage discharge signal, and the discharge circuit 30 includes a high-voltage discharge branch 31 and a low-voltage discharge branch 32.

[0037] The first end of the high-voltage discharge branch 31 is connected to the high-voltage discharge end of the first power conversion circuit 40, the second end of the high-voltage discharge branch 31 is connected to the ground end of the first power conversion circuit 40, and the control end of the high-voltage discharge branch 31 is connected to the first output end of the main control circuit 20.

[0038] The first end of the low-voltage discharge branch 32 is connected to the low-voltage discharge end of the first power conversion circuit 40, the second end of the low-voltage discharge branch 32 is grounded, and the control end of the low-voltage discharge branch 32 is connected to the second output end of the main control circuit 20.

[0039] The high-voltage discharge branch 31 is configured to control the high-voltage side of the first power conversion circuit 40 to perform high-voltage discharge when receiving the high-voltage discharge signal sent by the main control circuit 20, so as to discharge the electronic device M.

[0040] The low-voltage discharge branch 32 is configured to control the low-voltage side of the first power conversion circuit 40 to perform low-voltage discharge when receiving the low-voltage discharge signal sent by the main control circuit 20, so as to discharge the electronic device M.

[0041] It should be noted that in the embodiment, the discharging circuit 30 can be configured in two parts, one part is the high-voltage discharging branch 31, which is used to discharge the high-voltage side of the first power conversion circuit 40 when receiving the corresponding high-voltage discharging signal, and the other part is the low-voltage discharging branch 32, which is used to discharge the low-voltage side of the first power conversion circuit 40 when receiving the low-voltage discharging signal sent by the master control circuit 20. When discharging is needed, discharging is performed on the high-voltage side and the low-voltage side of the first power conversion circuit 40 at the same time, which can prevent the excess power stored in the high-voltage side or the low-voltage side from continuing to provide abnormal voltage or abnormal current to the electronic device M during discharging, and at the same time, the discharging speed is improved.

[0042] In a specific implementation, when it is determined that the current electronic device M needs to be discharged, the master control circuit 20 will immediately send a high-voltage discharging signal to the high-voltage discharging circuit 30, and at the same time, a low-voltage discharging signal will also be sent to the low-voltage discharging circuit 30. The high-voltage discharging circuit 30 will discharge the high-voltage alternating current of the high-voltage side of the first power conversion circuit 40 when receiving the high-voltage discharging signal; at the same time, the low-voltage discharging circuit 30 will discharge the first low-voltage direct current of the low-voltage side of the first power conversion circuit 40 when receiving the low-voltage discharging signal, thereby indirectly discharging the electronic device M, ensuring that the voltage received by the power supply terminal of the electronic device M is quickly restored to the normal range, and finally realizing the fast discharging protection of the electronic device M.

[0043] Further, in the embodiment, the high-voltage discharging branch 31 includes a first high-voltage relay KH1 and a first resistor R1.

[0044] The control end of the first high-voltage relay KH1 is connected with the first output end of the master control circuit 20, the first contact of the first high-voltage relay KH1 is connected with the high-voltage discharging end of the first power conversion circuit 40, the second contact of the first high-voltage relay KH1 is connected with the first end of the first resistor R1, and the second end of the first resistor R1 is connected with the ground end of the first power conversion circuit 40.

[0045] It should be noted that the first high-voltage relay KH1 refers to a high-voltage resistant switching device that can be controlled by weak current and is used to control the transmission of high-voltage. In the embodiment, the control end of the first high-voltage relay KH1 refers to the two ends of the internal coil, which can be connected with two interfaces of the first output end of the master control circuit 20 respectively, and the connection mode of the contacts of the first high-voltage relay KH1 is controlled by the high-level or low-level electrical signals output by the two interfaces. There can be three contacts in the first high-voltage relay KH1, the first contact can be connected with the ground end of the first power conversion circuit 40 through the first resistor R1, the second contact is connected with the high-voltage discharging end of the first power conversion circuit 40, and the third contact is suspended.

[0046] In a specific implementation, if the first high-voltage relay KH1 receives the high-voltage discharge signal, the first contact can be controlled to be connected with the second contact, at this time, the high-voltage discharge end of the first power conversion circuit 40 is connected with the ground end thereof, so as to realize the discharge of the high-voltage alternating current on the high-voltage side; if the first high-voltage relay KH1 does not receive the high-voltage discharge signal, the first contact can be controlled to be connected with the third contact, at this time, the high-voltage side of the first power conversion circuit 40 normally works and does not discharge the high-voltage alternating current transmitted on the high-voltage side.

[0047] The ground end of the first power conversion circuit 40 can be specifically connected with a protection ground wire capable of bearing high voltage arranged in the first power conversion circuit 40, so as to realize the safe discharge of the high-voltage alternating current. The first resistor R1 can be a 100Ω / 100W discharge load, realizing the rapid discharge of the high-voltage alternating current.

[0048] Further, in the embodiment, the low-voltage discharge branch 32 comprises a first low-voltage relay KL1 and a second resistor R2.

[0049] The control end of the first low-voltage relay KL1 is connected with the second output end of the main control circuit 20, the first contact of the first low-voltage relay KL1 is connected with the low-voltage discharge end of the first power conversion circuit 40, the second contact of the first low-voltage relay KL1 is connected with the first end of the second resistor R2, and the second end of the second resistor R2 is grounded.

[0050] It should be noted that the first low-voltage relay KL1 refers to a switching device capable of being controlled by weak current and used for controlling the transmission of low-voltage electricity. In the embodiment, the control end of the first low-voltage relay KL1 refers to two ends of an internal coil, which can be connected with two interfaces of the second output end of the main control circuit 20 respectively, and the connection mode of the contacts of the first low-voltage relay KL1 is controlled by the high-level or low-level electrical signals output by the two interfaces. The first low-voltage relay KL1 can also have three contacts internally, the first contact can be connected with the low-voltage discharge end of the first power conversion circuit 40, the second contact is directly grounded through the second resistor R2, and the third contact is suspended.

[0051] In a specific implementation, if the first low-voltage relay KL1 receives a low-voltage discharge signal, the first contact can be controlled to be connected with the second contact, at this time, the low-voltage discharge end of the first power conversion circuit 40 is directly grounded through the second resistor R2, so as to directly discharge the first low-voltage direct current on the low-voltage side to the ground wire; if the first low-voltage relay KL1 does not receive a low-voltage discharge signal, the first contact can be controlled to be connected with the third contact, at this time, the low-voltage side of the first power conversion circuit 40 works normally and does not discharge the first low-voltage direct current transmitted on the low-voltage side. The second resistor R2 can also be a 100Ω / 100W discharge load to quickly discharge the first low-voltage direct current.

[0052] Further, in the embodiment, the power-on control circuit 10 comprises a second high-voltage relay KH2 and a third high-voltage relay KH3.

[0053] The control end of the second high-voltage relay KH2 is connected with the third output end of the main control circuit 20, the first contact of the second high-voltage relay KH2 is connected with the live wire of the alternating current power supply U0, and the second contact of the second high-voltage relay KH2 is connected with the first input end of the first power conversion circuit 40.

[0054] The control end of the third high-voltage relay KH3 is connected with the fourth output end of the main control circuit 20, the first contact of the third high-voltage relay KH3 is connected with the zero line of the alternating current power supply U0, and the second contact of the third high-voltage relay KH3 is connected with the second input end of the first power conversion circuit 40.

[0055] It should be noted that in the embodiment, the structures of the second high-voltage relay KH2 and the third high-voltage relay KH3 can be the same as those of the first high-voltage relay KH1, which will not be described herein.

[0056] It is easy to understand that in the embodiment, two ends of the internal coil of the second high-voltage relay KH2 are respectively connected to two interfaces of the third output end of the master control circuit 20, and two ends of the internal coil of the third high-voltage relay KH3 are respectively connected to two interfaces of the fourth output end of the master control circuit 20. The first contact of the second high-voltage relay KH2 is connected to the live wire of the alternating current power supply U0, the second contact is connected to the first input end of the first power conversion circuit 40, and the third contact is suspended; the first contact of the third high-voltage relay KH3 is connected to the zero line of the alternating current power supply U0, the second contact is connected to the second input end of the first power conversion circuit 40, and the third contact is suspended. Both can be controlled by receiving high-level or low-level electrical signals sent by the master control circuit 20 to be turned on and turned off at the same time. When the second high-voltage relay KH2 and the third high-voltage relay KH3 are turned on at the same time (the first contact is connected to the second contact), the alternating current power supply U0 and the first power conversion circuit 40 can form a complete connection loop, and the high-voltage alternating current output by the alternating current power supply U0 can be normally transmitted to the first power conversion circuit 40; when the second high-voltage relay KH2 and the third high-voltage relay KH3 are turned off at the same time (the first contact is connected to the third contact), the alternating current power supply U0 and the first power conversion circuit 40 cannot form a complete connection loop, and the high-voltage alternating current output by the alternating current power supply U0 cannot be transmitted to the first power conversion circuit 40.

[0057] Based on the first embodiment and / or the second embodiment of the present application, in the third embodiment of the present application, the same or similar contents as the above-mentioned first embodiment and second embodiment can be referred to the above introduction, and will not be described in detail. On this basis, please refer to Figure 3 , the power supply control system further comprises: a second power conversion circuit 50 and an industrial switching power supply U1;

[0058] The industrial switching power supply U1 is connected to the second power conversion circuit 50, and the second power conversion circuit 50 is further connected to the power supply end of the master control circuit 20;

[0059] The industrial switching power supply U1 is configured to convert the high-voltage alternating current provided by the alternating current power supply U0 into industrial direct current, and transmit the industrial direct current to the second power conversion circuit 50;

[0060] The second power conversion circuit 50 is configured to convert the industrial direct current into second low-voltage direct current, and transmit the second low-voltage direct current to the master control circuit 20 to supply power to the master control circuit 20.

[0061] It should be noted that in the embodiment, the industrial switching power supply U1 can be understood as an AC-DC converter, which converts the input voltage into high-frequency pulse signals through the high-speed switching tube arranged inside, and the pulse signals are further processed by the internal transformer, rectifier circuit and filter circuit to realize the form conversion of electric energy, and finally output a stable low-ripple DC voltage, i.e. industrial DC voltage, which can provide basic power supply for other devices in the system, such as solenoid valves. As a preferred case, the industrial DC voltage can be a DC voltage with a voltage of about 12V. The second power conversion circuit 50 can be understood as a DC-DC circuit, which can realize the voltage conversion of DC.

[0062] It is easy to understand that the second voltage DC can be a low-power weak current, such as 3.3V system voltage required by most low-power chips. In the embodiment, the high-voltage AC power provided by the AC power supply U0 can be first converted into low-voltage industrial DC by the industrial switching power supply U1, and then the industrial DC can be converted into second DC with relatively lower voltage required by the main control circuit 20 by the second power conversion circuit 50, and the main control circuit 20 is powered by the second DC to support the main control circuit 20 to realize various functions mentioned in the application.

[0063] Further, in the embodiment, the main control circuit 20 is also connected with the host computer PC through the communication bus;

[0064] The main control circuit 20 is also used for sending a corresponding control signal to the power-on control circuit 10 when receiving a control instruction sent by the host computer PC, so as to make the power-on control circuit 10 switch the on-off state of the connection loop between the AC power supply U0 and the electronic device M.

[0065] The main control circuit 20 is also used for sending a corresponding control signal to the power-on control circuit 10 when receiving a control instruction sent by the host computer PC, so as to make the power-on control circuit 10 switch the on-off state of the connection loop between the AC power supply U0 and the electronic device M.

[0066] It should be noted that the control instruction can be understood as an information instruction for controlling the master control circuit 20 to execute the control of the power-on control circuit 10 to power on or power off. In the embodiment, the master control circuit 20 can interact with the host computer PC through the CAN bus or the RS485 bus or other types of communication buses, including the process of receiving the control instruction transmitted by the host computer PC. When the master control circuit 20 receives the control instruction sent by the host computer PC, a control signal corresponding to a high level or a low level can be generated, and the control signal is sent to the power-on control circuit 10. When the power-on control circuit 10 receives the control signal, it will control the on-off state of the connection circuit between the alternating current power supply U0 and the electronic device M according to the high and low levels of the control signal. The connection circuit can include the first power conversion circuit 40, or can not include the first power conversion circuit 40.

[0067] In addition, the master control circuit 20 can also generate a corresponding state signal when receiving the state detection signal fed back by the electronic device M. The state signal can represent the current working state of the electronic device M, such as power-on state, power-off state, abnormal state, running state, standby state, etc. The host computer PC can monitor the power supply process of the electronic device M in real time based on the received state signal, and display it to the corresponding worker in the form of an image through the screen of the host computer PC.

[0068] Further, in the embodiment, the power supply control system further comprises a mating jig MT, a solenoid valve SV and a pneumatic device DV.

[0069] The mating jig MT is connected with the master control circuit 20, the power-on control circuit 10 and the discharge circuit 30 respectively; the control end of the solenoid valve SV is connected with the fifth output end of the master control circuit 20;

[0070] The pneumatic device DV is physically connected with the mating jig MT and the air pipe respectively, and is used to drive the pressing plate of the mating jig MT to press the electronic device M into the mating jig MT when the air pipe provides a preset air pressure, so that the electronic device M is connected to the master control circuit 20, the power-on control circuit 10 and the discharge circuit 30 through the mating jig MT;

[0071] The master control circuit 20 is further used to send a corresponding opening signal to the solenoid valve SV when receiving the mating instruction sent by the host computer PC;

[0072] The solenoid valve SV is arranged in the air pipe and is used to open the gas transmission channel between the air pipe and the pneumatic device DV to provide a preset air pressure for the pneumatic device DV when receiving the opening signal.

[0073] It should be understood that in the present embodiment, the mating jig MT refers to a device for stably electrically connecting the electronic device M with each functional circuit in the system, and the mating jig MT is provided with a pressing plate (not shown in the figure). The electronic device M can be pressed by the pressing plate and fixed in a specific position, so that each functional interface of the electronic device M located in the specific position can be stably electrically connected with the master control circuit 20, the power-on control circuit 10 and other functional circuits through the pins or PIN needles on the mating jig MT.

[0074] It should be noted that in the present embodiment, the pressing plate of the mating jig MT is physically connected with the pneumatic device DV, and the pneumatic device DV is also connected with the air pipe. The air pipe can provide the pneumatic device DV with air pressure. When the air pressure provided for the pneumatic device DV is higher than the preset air pressure, the pneumatic device DV can drive the pressing plate of the mating jig MT to move to the corresponding position by physical means, so as to press the electronic device M and fix it in the specific position described above. The solenoid valve SV is arranged in the air pipe and is used to control the on-off state of the gas transmission channel of the air pipe. When the gas transmission channel is in the open state, the air pipe can normally provide the pneumatic device DV with the preset air pressure. When the gas transmission channel is in the closed state, the air pipe will not provide the pneumatic device DV with the preset air pressure. The basic power supply of the solenoid valve SV can be provided by the industrial switching power supply U1 described above (not shown in the figure).

[0075] It is easy to understand that the mating instruction refers to an instruction for driving the master control circuit 20 to control the solenoid valve SV to be opened so that the pneumatic device DV drives the mating jig MT to be loaded into the electronic device M. In the present embodiment, when the electronic device M needs to be powered, the host computer PC can send a corresponding mating instruction to the master control circuit 20, so that the master control circuit 20 controls the mating jig MT to automatically access the electronic device M. In this process, the master control circuit 20 can send an opening signal to the solenoid valve SV, so that the solenoid valve SV enters the open state, so that the pneumatic device DV can receive the preset air pressure provided by the air pipe, and then drive the pressing plate of the mating jig MT to press the electronic device M in a specific position, and access each functional circuit in the system.

[0076] Through the above structure, the automation of feeding and discharging can be realized. When multiple electronic devices M need to be powered, the electronic devices M can be automatically put into the corresponding mating jig MT, and after the power supply is completed, the product can be automatically ejected from the mating jig MT, which can save the time spent on replacing the electronic device M. At the same time, it can also ensure that the electronic device M has a good electrical relationship with the system during power supply, so as to avoid the occurrence of abnormal transmission of signals or data.

[0077] Further, in the present embodiment, the power supply control system further comprises a position detection circuit CAM;

[0078] The position detection circuit CAM is connected with the master control circuit 20 through a communication bus;

[0079] The position detection circuit CAM is configured to detect a real-time placement position of the electronic device M on the mating jig MT, and send a position abnormality signal to the master control circuit 20 when the real-time placement position is not at a preset placement position.

[0080] The master control circuit 20 is further configured to stop sending the opening signal to the electromagnetic valve SV when the position abnormality signal is received.

[0081] It should be understood that the real-time placement position refers to the relative position of the electronic device M on the mating jig MT in the current situation. In the embodiment, the physical shape of the mating jig MT is as close as possible to the appearance shape of the electronic device M, so as to reduce the electrical noise caused by mechanical shaking of the electronic device M during power supply. Therefore, the mating jig MT is generally provided with a preset placement position which can just accommodate the electronic device M, and if the electronic device M is not at the preset placement position, the electronic device M cannot be electrically connected with the functional modules in the system, and at the same time, the electronic device M can be mechanically damaged by the pressing plate of the mating jig MT.

[0082] It should be noted that in the embodiment, the position detection circuit CAM can also be arranged around the mating jig MT, and the position detection circuit CAM can be a functional module with a visual module capable of image acquisition. The real-time image on the mating jig MT can be acquired through the visual module, so as to monitor the real-time placement position of the electronic device M on the mating jig MT in real time. The position detection circuit CAM can also determine whether the real-time placement position of the current electronic device M is at the preset placement position. When it is determined that the real-time placement position of the current electronic device M is not correctly moved to the preset placement position, a position abnormality signal can be fed back to the master control circuit 20 to inform the master control circuit 20 that the real-time placement position of the current electronic device M does not support power supply. At this time, even if the master control circuit 20 receives the mating instruction sent by the upper computer PC, the master control circuit 20 will not send an opening instruction to the electromagnetic valve SV, so as to prevent the pressing plate of the mating jig MT from damaging the electronic device M which is not at the preset placement position.

[0083] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent flow transformation based on the content of the specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent processing scope of the present application.

Claims

1. A power supply control system, characterized in that, The power supply control system includes: a power-on control circuit, a main control circuit, and a discharge circuit; The power-on control circuit is connected to the AC power supply, the discharge circuit, and the main control circuit, and is also used to connect to the power supply terminal of the electronic device; the main control circuit is connected to the discharge circuit and is also used to connect to the status feedback terminal of the electronic device. The power-on control circuit is used to control the on / off state of the connection circuit between the AC power supply and the electronic device; The main control circuit is used to acquire the status detection signal fed back by the electronic device before the on / off state is switched to the on state and after the on / off state is switched to the off state, and to send a discharge signal to the discharge circuit when the voltage of the status detection signal exceeds a preset voltage. The discharge circuit is used to discharge the electronic device when the discharge signal is received.

2. The power supply control system as described in claim 1, characterized in that, The power supply control system further includes: a first power conversion circuit; The first power conversion circuit is connected to the power-on control circuit, the discharge circuit, and the power supply terminal of the electronic device, respectively. The first power conversion circuit is used to convert the high-voltage AC power provided by the AC power supply into a first low-voltage DC power when connected to the AC power supply through the power-on control circuit, and to transmit the first low-voltage DC power to the electronic device.

3. The power supply control system as described in claim 2, characterized in that, The discharge signal includes a high-voltage discharge signal and a low-voltage discharge signal, and the discharge circuit includes a high-voltage discharge branch and a low-voltage discharge branch. The first end of the high-voltage discharge branch is connected to the high-voltage discharge terminal of the first power conversion circuit, the second end of the high-voltage discharge branch is connected to the ground terminal of the first power conversion circuit, and the control terminal of the high-voltage discharge branch is connected to the first output terminal of the main control circuit. The first end of the low-voltage discharge branch is connected to the low-voltage discharge terminal of the first power conversion circuit, the second end of the low-voltage discharge branch is grounded, and the control terminal of the low-voltage discharge branch is connected to the second output terminal of the main control circuit. The high-voltage discharge branch is used to control the high-voltage side of the first power conversion circuit to perform high-voltage discharge when it receives the high-voltage discharge signal sent by the main control circuit, so as to discharge the electronic device. The low-voltage discharge branch is used to control the low-voltage side of the first power conversion circuit to perform low-voltage discharge when it receives the low-voltage discharge signal sent by the main control circuit, so as to discharge the electronic device.

4. The power supply control system as described in claim 3, characterized in that, The high-voltage discharge branch includes: a first high-voltage relay and a first resistor; The control terminal of the first high-voltage relay is connected to the first output terminal of the main control circuit, the first contact of the first high-voltage relay is connected to the high-voltage discharge terminal of the first power conversion circuit, the second contact of the first high-voltage relay is connected to the first end of the first resistor, and the second end of the first resistor is connected to the ground terminal of the first power conversion circuit.

5. The power supply control system as described in claim 3, characterized in that, The low-voltage discharge branch includes: a first low-voltage relay and a second resistor; The control terminal of the first low-voltage relay is connected to the second output terminal of the main control circuit, the first contact of the first low-voltage relay is connected to the low-voltage discharge terminal of the first power conversion circuit, the second contact of the first low-voltage relay is connected to the first terminal of the second resistor, and the second terminal of the second resistor is grounded.

6. The power supply control system as described in claim 3, characterized in that, The power-on control circuit includes: a second high-voltage relay and a third high-voltage relay; The control terminal of the second high-voltage relay is connected to the third output terminal of the main control circuit, the first contact of the second high-voltage relay is connected to the live wire of the AC power supply, and the second contact of the second high-voltage relay is connected to the first input terminal of the first power conversion circuit. The control terminal of the third high-voltage relay is connected to the fourth output terminal of the main control circuit, the first contact of the third high-voltage relay is connected to the neutral wire of the AC power supply, and the second contact of the third high-voltage relay is connected to the second input terminal of the first power conversion circuit.

7. The power supply control system as described in claim 1, characterized in that, The power supply control system also includes: a second power conversion circuit and an industrial switching power supply; The industrial switching power supply is connected to the second power conversion circuit, and the second power conversion circuit is also connected to the power supply terminal of the main control circuit. The industrial switching power supply is used to convert the high-voltage AC power provided by the AC power supply into industrial DC power, and transmit the industrial DC power to the second power conversion circuit. The second power conversion circuit is used to convert the industrial DC power into a second low-voltage DC power and transmit the second low-voltage DC power to the main control circuit to power the main control circuit.

8. The power supply control system as described in claim 1, characterized in that, The main control circuit is also connected to the host computer via a communication bus; The main control circuit is also used to send a corresponding control signal to the power-on control circuit when it receives a control command sent by the host computer, so that the power-on control circuit switches the on / off state of the connection loop between the AC power supply and the electronic device. The main control circuit is also used to send a corresponding status signal to the host computer when it receives the status detection signal, so that the host computer can obtain the current working status of the electronic device.

9. The power supply control system as described in claim 8, characterized in that, The power supply control system also includes: a fitting fixture, a solenoid valve, and a pneumatic device; The fitting fixture is connected to the main control circuit, the power-on control circuit, and the discharge circuit respectively; the control terminal of the solenoid valve is connected to the fifth output terminal of the main control circuit. The pneumatic device is physically connected to the fitting fixture and the air pipe respectively. When the air pipe provides a preset air pressure, it drives the pressure plate of the fitting fixture to press the electronic device into the fitting fixture, so that the electronic device can be connected to the main control circuit, the power-on control circuit and the discharge circuit through the fitting fixture. The main control circuit is also used to send a corresponding opening signal to the solenoid valve when it receives a connection command sent by the host computer; The solenoid valve is disposed in the air pipe and is used to open the gas transmission channel between the air pipe and the pneumatic device upon receiving the opening signal, so as to provide the preset air pressure to the pneumatic device.

10. The power supply control system as described in claim 9, characterized in that, The power supply control system further includes: a position detection circuit; The position detection circuit is connected to the main control circuit via a communication bus; The position detection circuit is used to detect the real-time placement position of the electronic device on the mating fixture, and send a position abnormality signal to the main control circuit when the real-time placement position is not in the preset placement position. The main control circuit is also used to stop sending the opening signal to the solenoid valve when it receives the position abnormality signal.

Images