Timing restart device for power over Ethernet (PoE) power supply

Abstract

The utility model provides a timed restart device for PoE power supply, the PoE power supply comprises a first interface and a second interface, the timed restart device comprises a relay which is respectively connected with the first interface and the second interface and is used for controlling power supply disconnection or connection between the first interface and the second interface; the single chip microcomputer is connected with the relay and used for controlling the relay to be closed or opened; the voltage stabilizing chip is connected with the single-chip microcomputer and used for processing the power supply voltage and then transmitting the power supply voltage to the single-chip microcomputer; and the microswitch is connected with the single chip microcomputer and is used for setting restart timing time for the relay. According to the scheme, the relay is controlled through single-chip microcomputer programming, after the output power supply time reaches 120 hours (settable), output power supply is cut off, and after 30 seconds (settable), output power supply is recovered. The device provided by the utility model is connected between the PoE power supply and the network bridge to realize the timed restart function of the network bridge. The device does not need to distinguish a power supply end and a power receiving end. The method is simple, practical and convenient to operate.

Description

Technical Field

[0001] This application relates to the technical field of Power over Ethernet (PoE), and particularly to a timing restart device for PoE power supply. Background Art

[0002] The power metering of the potassium sulfate plant is important data for the production technology section to calculate energy consumption. To solve the problem of electricity consumption statistics, a wireless power collection system for the potassium sulfate plant was developed. During operation, it was found that the data transmission of the wireless bridge would become slow and it could not work properly after about 7 - 15 days.

[0003] In the prior art, Power over Ethernet (PoE) is a mechanism where a device uses an Ethernet electrical port to remotely power a powered device hanging at the far end of the network through a twisted pair, so as to achieve parallel transmission of power supply and data. The powered device on the network no longer needs an external power supply, making the connection more convenient and power management more convenient. While the wireless bridge is powered, it needs to undertake a large amount of data transmission services, and inevitably there will be some situations where the device freezes and needs to be restarted.

[0004] Therefore, in view of the above situation, it is necessary to perform a hot restart on the PoE - powered (12V power supply) wireless bridge. Summary of the Invention

[0005] The purpose of this application is to provide a timing restart device for PoE power supply, which can periodically restart the PoE power supply to avoid the situation of the bridge device freezing.

[0006] A timing restart device for PoE power supply, where the PoE power supply includes a first interface and a second interface. The timing restart device is characterized by including:

[0007] A relay, which is respectively connected to the first interface and the second interface, and is used to control the power supply between the first interface and the second interface to be disconnected or connected;

[0008] A single - chip microcomputer, which is connected to the relay and is used to control the relay to close or open;

[0009] A voltage - stabilizing chip, which is connected to the single - chip microcomputer and is used to process the supply voltage and then transmit it to the single - chip microcomputer;

[0010] A micro - switch, which is connected to the single - chip microcomputer and is used to set the restart timing for the relay.

[0011] Preferably, the relay is respectively connected to the positive poles of the power supplies of the first interface and the second interface.

[0012] Preferably, a triode is provided between the single-chip microcomputer and the relay. The single-chip microcomputer is used to adjust the level of the relay through the triode to control the closing or opening of the relay.

[0013] Preferably, the timing restart device further includes:

[0014] An LED indicator light, connected to the single-chip microcomputer, for displaying the timing time and the working state of the single-chip microcomputer.

[0015] Preferably, the timing restart device further includes:

[0016] An external power supply for supplying power to the voltage stabilizing chip.

[0017] Preferably, the voltage stabilizing chip is respectively connected to the first interface and / or the second interface, and the first interface and / or the second interface supply power to the voltage stabilizing chip.

[0018] Preferably, diodes are respectively provided between the voltage stabilizing chip and the first interface and the second interface for the first interface and / or the second interface to supply power to the voltage stabilizing chip unidirectionally.

[0019] The beneficial effect of this application is that: through the timing restart device for PoE power supply of this application, a single-chip microcomputer is used to program and control the relay. After the cumulative output power supply time reaches 120 hours (can be set), the output power supply is disconnected, and after 30S (can be set), the output power supply is restored. Connecting this invention device between the PoE power supply and the bridge realizes the function of the bridge timing restart. This device does not need to distinguish between the power supply end and the power receiving end. The invention is simple and practical, and easy to operate. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 It is a schematic structural diagram of the timing restart device for PoE power supply provided by the embodiment of this application;

[0022] Figure 2 It is a schematic circuit diagram of the timing restart device for PoE power supply provided by the embodiment of this application. Detailed Embodiments

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] Referring Figure 1 As shown, a timing restart device for PoE power supply provided by the present application, the PoE power supply includes a first interface and a second interface, and includes: a relay, a single-chip microcomputer, a voltage regulator chip, and a micro switch. Among them, the single-chip microcomputer is respectively connected to the relay, the voltage regulator chip, and the micro switch.

[0025] In the embodiment of the present application, the timing restart device is connected to the PoE power supply by connecting the relay. The relay makes the PoE power supply in a conducting state when it is closed, and the PoE is in a disconnected state when the relay is in an open state. That is, by controlling the process of the relay opening first and then closing, the restart of the PoE power supply is completed. Specifically, the relay is respectively connected to the first interface and the second interface of the PoE power supply. When the relay is in a closed state, the PoE power supply is in a connected state and power supply can be carried out. When the relay is in an open state, the PoE power supply is in a disconnected state, that is, the power supply is disconnected.

[0026] In order to facilitate the timing restart of the PoE power supply, further, the restart timing of the relay is set through the micro switch, and the single-chip microcomputer controls the relay to open and then close again according to the set timing, so as to realize the control of the PoE power supply restart. Specifically, a triode is also provided between the single-chip microcomputer and the relay. The single-chip microcomputer drives the triode to be in a conducting state, thereby controlling the relay to change from a normally closed state to an open state; by driving the triode to be in a cut-off state, the relay is controlled to change from an open state to a normally closed state.

[0027] In the embodiment of the present application, the timing restart device for PoE power supply is also provided with an LED indicator light, which is connected to the single-chip microcomputer and is used to display the restart timing set through the micro switch, and at the same time display the working state of the single-chip microcomputer, so as to facilitate maintenance staff to understand the working state of the single-chip microcomputer and the restart time of the next PoE power supply according to the LED indicator light.

[0028] To ensure that the relay can be restarted on time, the single-chip microcomputer needs to be in a long-term and stable working state. Further, a voltage stabilizing chip is used to provide stable voltage power for the single-chip microcomputer. In one embodiment, the voltage stabilizing chip is connected to an external power supply to obtain electrical energy. Further, after processing the voltage of the external power supply into the working voltage of the single-chip microcomputer, it is delivered to the single-chip microcomputer to maintain the working state. In another embodiment, the voltage stabilizing chip is respectively connected to the first interface or the second interface of the PoE power supply. Whether the PoE power supply is from the first interface or the second interface, the voltage stabilizing chip can obtain electrical energy, and further processes the voltage of the obtained electrical energy into the working voltage of the single-chip microcomputer and delivers it to the single-chip microcomputer to maintain the working state. When the voltage stabilizing chip is connected to both the first interface and the second interface of the PoE power supply at the same time, in order to prevent the PoE power supply from forming a path in the voltage regulator, further, diodes are respectively arranged between the voltage regulator and the first interface and the second interface, so that the electrical energy delivered to the voltage stabilizing chip is unidirectional power supply, and the current cannot be delivered to another interface through the connection line between the voltage stabilizing chip and another interface, thereby forming a PoE power supply path.

[0029] Reference Figure 2 As shown, the wireless bridge timing restart device provided by the embodiment of the present application includes a first RJ45 interface and a second RJ45 interface. After the pins between the first interface U1-RJ45 and the second interface U2-RJ45 are connected one by one, it is used to remotely power the wireless bridge. Among them, the 4th and 5th pins of the first interface U1-RJ45 are combined and connected to the 4th and 5th pins of the second interface U2-RJ45, and the 7th and 8th pins of the first interface U1-RJ45 are combined and connected to the 7th and 8th pins of the second interface U2-RJ45. In this embodiment, according to the PoE power supply specification, the 4th and 5th pins of the RJ45 interface are positive poles, and the 7th and 8th pins are negative poles.

[0030] The 3rd and 4th pins of the relay RLY1 are respectively connected to the 4th and 5th pins of the first interface U1-RJ45 and the 4th and 5th pins of the second interface U2-RJ45, and the 1st pin of the relay RLY1 is respectively connected to the 7th and 8th pins of the first interface U1-RJ45 and the 7th and 8th pins of the second interface U2-RJ45.

[0031] The input pins of the voltage stabilizing chip U3-7805 are respectively connected to the 4th and 5th pins of the first interface U1-RJ45 and the 4th and 5th pins of the second interface U2-RJ45, and the output pin of the voltage stabilizing chip U3-7805 is connected to the power supply pin of the single-chip microcomputer. Among them, a diode D2 and a diode D3 are respectively arranged between the voltage stabilizing chip U3-7805 and the first interface U1-RJ45 and the second interface U2-RJ45, so that the voltage stabilizing chip does not need to distinguish between the power supply end and the power receiving end.

[0032] The single-chip microcomputer U4 is connected to the base of the triode Q1 through pin 8. The collector of the triode Q1 is connected to pin 2 of the relay RLY1, and the emitter of the triode Q1 is connected to the negative pole. Further, the single-chip microcomputer U4 is also connected to the microswitch KEY2 through pin 5 to adjust the restart timing by means of the microswitch KEY2. The single-chip microcomputer U4 is also connected to two light-emitting diodes LED1 and LED2 through pins 6 and 7 respectively, for displaying the restart timing adjusted by the microswitch KEY2 and the working state of the single-chip microcomputer U4.

[0033] In the embodiment of the present application, after the single-chip microcomputer U4 starts to work, when the set restart time is reached, the single-chip microcomputer U4 drives the triode Q1 to conduct through program control on pin 8. After the triode Q1 conducts, the level of pin 2 of the relay RLY1 changes from high level to low level, and the contact of the relay RLY1 acts. Pins 3 and 4 of the relay RLY1 change from normally closed to open, so that the connection loop of pins 4 and 5 of the first interface U1-RJ45 and the second interface U2-RJ45 is disconnected, and the PoE-powered device loses power and shuts down automatically. Five seconds later, the single-chip microcomputer U4 drives the triode Q1 to cut off through pin 8. After the triode Q1 cuts off, the level of pin 2 of the relay RLY1 changes from low level to high level, and the contact of the relay RLY1 resets. Then pins 3 and 4 of the relay RLY1 close, so that the connection loop of pins 4 and 5 of the first interface U1-RJ45 and the second interface U2-RJ45 is connected, and the PoE-powered device is powered on automatically after being powered on, so as to achieve the purpose of restarting the PoE-powered device.

[0034] For the solution of the timing restart device for PoE power supply in the present application, based on the characteristics of PoE power supply (12V power supply), the timing restart device uses 2 RJ45 interfaces, and uses a single-chip microcomputer to program and control the relay. After the cumulative output power supply time reaches 120 hours (can be set), the output power supply is disconnected, and the output power supply is restored after 30S. Connect this invention device between the PoE power supply and the bridge to realize the function of the bridge timing restart. This device does not need to distinguish between the power supply end and the power receiving end. The invention is simple and practical, and easy to operate.

[0035] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0036] In this text, specific examples are used to illustrate the principles and implementation modes of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation modes and application scopes. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A timed restart device for PoE power supply, wherein the PoE power supply comprises a first interface and a second interface, characterized in that: The timing restart device comprises: a relay, connected to the first interface and the second interface respectively, and used to control the power supply between the first interface and the second interface to be disconnected or connected; A single chip microcomputer, connected to the relay, and used to control the relay to close or open; A voltage stabilizing chip, connected to the single-chip microcomputer, for processing the supply voltage and transmitting it to the single-chip microcomputer; A micro switch is connected to the single chip microcomputer and is used to set a restart timing time for the relay.

2. The timed restart device for PoE power supply according to claim 1, characterized in that: The relay is connected to the positive power supply electrodes of the first interface and the second interface respectively.

3. The timed restart device for PoE power supply according to claim 1, characterized in that: A transistor is provided between the single chip microcomputer and the relay, and the single chip microcomputer is used to adjust the level of the relay through the transistor to control the relay to be closed or opened.

4. The timed restart device for PoE power supply according to any one of claims 1 to 3, characterized in that: The timing restart device further includes: An LED indicator light is connected to the single chip microcomputer and is used to display the timing time and the working status of the single chip microcomputer.

5. The timed restart device for PoE power supply according to any one of claims 1 to 3, characterized in that: The timing restart device further includes: An external power supply is used to supply power to the voltage stabilizing chip.

6. The timed restart device for PoE power supply according to any one of claims 1 to 3, characterized in that: The voltage stabilizing chip is connected to the first interface and / or the second interface respectively, and the first interface and / or the second interface supplies power to the voltage stabilizing chip.

7. The timed restart device for PoE power supply according to claim 6, characterized in that: Diodes are provided between the voltage stabilizing chip and the first interface and the second interface respectively, so as to provide unidirectional power supply to the voltage stabilizing chip by the first interface and / or the second interface.

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