An intelligent POE power supply and its implementation method

Abstract

The present invention relates to an intelligent POE power supply and its implementation method, including a control module, a powered device identification module, a line switching module, a voltage output module, an analog detection module, and a wireless communication module; by applying the circuit of the present application, on the basis of standard powered device detection, a corresponding module for identifying the power of the powered device based on the voltage change curve or current change curve is added, enabling the POE power supply to be applicable to most non-standard powered devices with interfaces and power connection sequences consistent with those of standard powered devices but only different in operating voltage, greatly improving the applicability of the POE power supply. Moreover, for some new non-standard devices, compatibility can be quickly achieved by updating the data in the external host database.

Description

Technical Field

[0001] The present invention relates to the technical field of POE power supplies, and more specifically, to an intelligent POE power supply and an implementation method thereof. Background Art

[0002] A POE power supply is a special power supply that transmits data and electricity over the same cable. Through the twisted pair in an Ethernet cable (Cat5 / Cat6), it synchronously transmits data signals and DC power to achieve the function of "using one cable for two purposes". The POE power supply has its unique advantages in simplifying wiring and reducing the failure rate.

[0003] POE power supplies are divided into two types: standard POE power supplies and non-standard POE power supplies according to the actually connected load devices. The main difference between the two is that standard POE power supplies comply with the IEEE 802.3af / at / bt specifications, and it is mandatory for the power supply end (PSE) and the power receiving end (PD) to negotiate power through a handshake protocol, supporting dynamic detection of device types and power requirements; while non-standard POE power supplies do not have the IEEE standard protocol, directly output a fixed voltage (such as 48V, 24V, 12V, etc.), and do not detect the presence of devices or power requirements, which may lead to voltage mismatch or device damage; usually, the two cannot be made compatible, and in applications, it often brings some limitations or device damage due to choosing the wrong type. There is a need for an intelligent POE power supply and an implementation method thereof that can solve this compatibility problem. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an intelligent POE power supply and an implementation method of an intelligent POE power supply in view of the above-mentioned defects of the prior art.

[0005] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0006] Construct an intelligent POE power supply, which includes a control module, a power receiving device identification module, a line switching module, a voltage output module, an analog detection module, and a wireless communication module;

[0007] The power receiving device identification module is used to identify the standard type and non-standard type of the connected power receiving device, and feedback the identification result to the control module;

[0008] The control module is used to control the voltage output module to output for the connected standard type device, so that the power supply branch where the standard type device is located outputs at 48V; and for the connected non-standard type device, control the line switching module to switch the connected non-standard type device to be connected to the analog detection module;

[0009] The simulation detection module is used to perform boost simulation on the connected non-standard device, obtain the voltage change curve or current change curve of the load, send the voltage change curve or current change curve to the external host through the wireless communication module, receive the power requirement of the non-standard device after analysis and comparison by the external host, and send it to the control module;

[0010] The control module is further configured to, when receiving the power requirement of the non-standard device, control the line switching module to switch the connected non-standard device to be connected to the voltage output module, and control the voltage output module to output the voltage of the power supply branch where the non-standard device is located according to the voltage of the power requirement of the non-standard device.

[0011] For the intelligent POE power supply according to the present invention, wherein the external host is configured with a processing module and a database unit;

[0012] The processing module is used to receive the voltage change curve or current change curve, and search and match in the database unit. If the match is successful, it feeds back the set power requirement of the non-standard device bound to the voltage change curve or current change curve, otherwise it feeds back a match failure;

[0013] When receiving the feedback failure information, the control module issues a device mismatch warning to the outside world.

[0014] For the intelligent POE power supply according to the present invention, wherein the database unit is used to store the corresponding relationship between the voltage change curve or current change curve and the power requirement of the non-standard device, and this corresponding relationship can be updated manually in real time.

[0015] For the intelligent POE power supply according to the present invention, wherein the powered device identification module includes multiple device identification chips; the intelligent POE power supply includes multiple connection interfaces for connecting the powered devices, and the device identification chips are connected to the connection interfaces one by one through network cables; multiple said device identification chips are all connected to the control module.

[0016] For the intelligent POE power supply according to the present invention, wherein the voltage output module includes multiple voltage output subunits, and the line switching module includes multiple switching switches; the voltage output subunits are connected to the connection interfaces one by one through network cables, and the switching switches are used to switch the connection between the voltage output subunits and the simulation detection module or the control module.

[0017] For the intelligent POE power supply according to the present invention, wherein the intelligent POE power supply further includes a voltage input module, and multiple said voltage output subunits are connected to the voltage input module; the voltage output subunits are used for converting and outputting voltage.

[0018] For the intelligent POE power supply of the present invention, when the control module does not receive the identification result of the device identification chip, it controls the corresponding voltage output subunit not to output voltage.

[0019] For the intelligent POE power supply of the present invention, the analog detection module includes a detection chip, a boost unit and a load; the analog detection module further includes a voltage detection unit or a current detection unit for detecting the voltage across the load or the current passing through; the detection chip is connected to the voltage detection unit or the current detection unit, and the detection chip is connected to the boost unit, the wireless communication module and the control module; the switching switch is connected to the detection chip and controlled by it.

[0020] An implementation method of an intelligent POE power supply, applying the above intelligent POE power supply, wherein the method includes the steps:

[0021] The powered device identification module identifies the connected powered device as standard or non-standard, and feeds back the identification result to the control module;

[0022] For the connected standard device, the control module controls the voltage output module to output, so that the power supply branch where the standard device is located outputs at 48V; and for the connected non-standard device, the control module controls the line switching module to switch the connected non-standard device to be connected to the analog detection module;

[0023] The analog detection module performs boost simulation on the connected non-standard device, and obtains the voltage change curve or current change curve of the load, sends the voltage change curve or current change curve to the external host through the wireless communication module, receives the power requirement of the non-standard device after analysis and comparison by the external host, and sends it to the control module;

[0024] When the control module receives the power requirement of the non-standard device, it controls the line switching module to switch the connected non-standard device to be connected to the voltage output module, and controls the voltage output module so that the power supply branch where the non-standard device is located outputs at the voltage required by the non-standard device.

[0025] For the implementation method of the intelligent POE power supply of the present invention, the external host is configured with a processing module and a database unit; the processing module is used to receive the voltage change curve or current change curve, and search and match in the database unit. If the match is successful, it feeds back the set power requirement of the non-standard device bound to the voltage change curve or current change curve, otherwise it feeds back a match failure; the control module issues a device mismatch warning to the outside when receiving the feedback failure information; the database unit is used to store the correspondence between the voltage change curve or current change curve and the power requirement of the non-standard device, and this correspondence can be updated manually in real time;

[0026] The power receiving device identification module includes multiple device identification chips; the intelligent POE power supply includes multiple connection interfaces for connecting power receiving devices, and the device identification chips are connected to the connection interfaces one by one through network cables; multiple said device identification chips are all connected to the control module; the voltage output module includes multiple voltage output sub-units, and the line switching module includes multiple switching switches; the voltage output sub-units are connected to the connection interfaces one by one through network cables, and the switching switches are used to switch the connection of the voltage output sub-units to the analog detection module or to the control module; the intelligent POE power supply further includes a voltage input module, and multiple said voltage output sub-units are connected to the voltage input module; the voltage output sub-units are used for converting and outputting voltage; when the control module does not receive the identification result of the device identification chip, it controls the corresponding voltage output sub-unit not to output voltage.

[0027] In the intelligent POE power supply of the present invention, the analog detection module includes a detection chip, a boost unit and a load; the analog detection module further includes a voltage detection unit or a current detection unit for detecting the voltage across the load or the current passing through; the detection chip is connected to the voltage detection unit or the current detection unit, and the detection chip is connected to the boost unit, the wireless communication module and the control module; the switching switch is connected to the detection chip and controlled by it.

[0028] The beneficial effects of the present invention are as follows: The power receiving device identification module identifies standard and non-standard power receiving devices connected thereto and feeds back the identification results to the control module; for the standard devices connected thereto, the control module controls the voltage output module to output, so that the power supply branch where the standard device is located outputs at 48V; and for the non-standard devices connected thereto, the control module controls the line switching module to switch the connected non-standard device to be connected to the analog detection module; the analog detection module performs boost simulation on the connected non-standard device and obtains the voltage change curve or current change curve of the load, and sends the voltage change curve or current change curve to an external host through the wireless communication module, receives the power requirement of the non-standard device after analysis and comparison by the external host, and sends it to the control module; when the control module receives the power requirement of the non-standard device, it controls the line switching module to switch the connected non-standard device to be connected to the voltage output module, and controls the voltage output module to make the power supply branch where the non-standard device is located output at the voltage required by the non-standard device.

[0029] By applying the method of the present application, a corresponding module for identifying the power of the powered device based on the voltage change curve or current change curve is added on the basis of the detection of the standard powered device, enabling the POE power supply to be applicable to most non-standard powered devices whose interfaces and power connection sequences are the same as those of the standard powered device but only the operating voltages are different, greatly improving the applicability of the POE power supply. Moreover, for some new non-standard devices, compatibility can be quickly achieved by updating the data in the external host database. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will further illustrate the present invention in conjunction with the drawings and embodiments. The drawings in the following description are only partial embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts:

[0031] Figure 1 is a schematic block diagram of the intelligent POE power supply according to a preferred embodiment of the present invention;

[0032] Figure 2 is a flowchart of the implementation method of the intelligent POE power supply according to a preferred embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0034] The intelligent POE power supply according to a preferred embodiment of the present invention, as Figure 1 shown, includes a control module 1, a powered device identification module 2, a line switching module 3, a voltage output module 4, an analog detection module 5, and a wireless communication module 6;

[0035] The powered device identification module 2 is used to identify the standard type and non-standard type of the connected powered device and feedback the identification result to the control module 1;

[0036] The control module 1 is used to control the voltage output module 4 to output for the connected standard type device, so that the power supply branch where the standard type device is located outputs at 48V; and for the connected non-standard type device, it controls the line switching module 4 to switch the connected non-standard type device to be connected to the analog detection module 5;

[0037] The simulation detection module 5 is used to perform boost simulation on the connected non-standard devices, obtain the voltage change curve or current change curve of the load, send the voltage change curve or current change curve to the external host 7 through the wireless communication module 6, receive the power demand of the non-standard device after analysis and comparison by the external host 7, and send it to the control module 1;

[0038] The control module 1 is further configured to, when receiving the power demand of the non-standard device, control the line switching module 3 to switch the connected non-standard device to be connected to the voltage output module 4, and control the voltage output module 4 to output the voltage of the power supply branch where the non-standard device is located according to the power demand voltage of the non-standard device;

[0039] The power receiving device identification module identifies the standard type and non-standard type of the connected power receiving device and feeds back the identification result to the control module; for the connected standard device, the control module controls the voltage output module to output, so that the power supply branch where the standard device is located outputs at 48V; for the connected non-standard device, the control module controls the line switching module to switch the connected non-standard device to be connected to the simulation detection module; the simulation detection module performs boost simulation on the connected non-standard device, obtains the voltage change curve or current change curve of the load, sends the voltage change curve or current change curve to the external host through the wireless communication module, receives the power demand of the non-standard device after analysis and comparison by the external host, and sends it to the control module; when receiving the power demand of the non-standard device, the control module controls the line switching module to switch the connected non-standard device to be connected to the voltage output module, and controls the voltage output module to output the voltage of the power supply branch where the non-standard device is located according to the power demand voltage of the non-standard device;

[0040] Applying the circuit of the present application, on the basis of the detection of standard power receiving devices, corresponding modules for identifying the power of power receiving devices based on voltage change curves or current change curves are added, so that the POE power supply can be applicable to most non-standard power receiving devices whose interfaces and power connection sequences are the same as those of standard power receiving devices but only the working voltages are different, greatly improving the applicability of the POE power supply. Moreover, for some new non-standard devices, compatibility can be quickly achieved by updating the data in the database of the external host.

[0041] Preferably, the external host 7 is configured with a processing module 70 and a database unit 71;

[0042] The processing module 70 is used to receive the voltage change curve or current change curve, and search and match in the database unit 71. If the match is successful, it feeds back the set non-standard device power demand bound to the voltage change curve or current change curve. Otherwise, it feeds back a match failure. The database unit 71 is used to store the correspondence between the voltage change curve or current change curve and the non-standard device power demand, and this correspondence can be updated manually in real time. It is convenient for batch online management, can detect in time when non-standard devices are connected, and if new non-standard devices need to be added, only the database needs to be updated, which is convenient for control. It should be noted that this control content has certain market application value when applied commercially.

[0043] Preferably, when the control module 1 receives the feedback failure information, it issues a device mismatch warning to the outside world. The mismatch warning can be implemented by configuring a display screen and / or an alarm, etc. In the mismatch state, the voltage output is 0, which can well avoid device damage caused by incorrect connection.

[0044] Preferably, the powered device identification module 2 includes multiple device identification chips 20. The intelligent POE power supply includes multiple connection interfaces 8 for connecting to the powered devices. The device identification chips 20 are connected to the connection interfaces 8 one by one through network cables. Multiple device identification chips are all connected to the control module 1. The circuit structure is simple and convenient for automatic identification and control. The device identification chip 20 can use the existing PD identification chip, and its model is not limited.

[0045] Preferably, the voltage output module 4 includes multiple voltage output sub-units 40, and the line switching module 3 includes multiple switching switches 30. The voltage output sub-units 40 are connected to the connection interfaces 8 one by one through network cables. The switching switch 30 is used to switch the connection between the voltage output sub-unit 40 and the analog detection module 5 or the control module 1 (a diode can be set between the voltage output sub-unit 40 and the switching switch 30 to control the current flow direction). Each connected powered device is independently detected and powered, ensuring that the intelligent POE power supply can simultaneously connect standard devices and non-standard devices, greatly improving compatibility.

[0046] Preferably, the intelligent POE power supply further includes a voltage input module 9, and multiple voltage output sub-units 40 are connected to the voltage input module 9. The voltage output sub-unit 40 is used for voltage conversion and output. When the control module 1 does not receive the identification result of the device identification chip, it controls the corresponding voltage output sub-unit 40 not to output voltage, ensuring the safety and compatibility of power supply.

[0047] Preferably, the analog detection module 5 includes a detection chip 50, a boost unit 51, and a load 52; the analog detection module 5 further includes a voltage detection unit 53 or a current detection unit for detecting the voltage across the load or the current passing through; the detection chip 50 is connected to the voltage detection unit 53 or the current detection unit, and the detection chip 50 is connected to the boost unit 51, the wireless communication module 6, and the control module 1; the switching switch 30 is connected to the detection chip 50 and controlled by it; when the switching switch 30 is switched to be connected to the load under the control of the control module 1, the boost unit 51 supplies power to the load 52 and the powered device and gradually boosts the voltage (at this time, the voltage output subunit 40 does not output and only acts as a connection component for connection), the voltage detection unit 53 or the current detection unit detects the voltage across the load or the current passing through, and correspondingly obtains a voltage change curve or a current change curve, the detection chip 50 sends the curve through the wireless communication module 6, receives the feedback and sends it to the control module 1, and at the same time the detection chip 50 controls the switching switch 30 to switch to be connected to the control module 1 to complete the switching process;

[0048] An intelligent POE power supply implementation method, applying the above intelligent POE power supply, as Figure 2 shown, the method includes the steps:

[0049] S01: The powered device identification module identifies the connected powered device as a standard type or a non-standard type, and feeds back the identification result to the control module;

[0050] S02: For the connected standard type device, the control module controls the voltage output module to output, so that the power supply branch where the standard type device is located outputs at 48V; and for the connected non-standard type device, the control module controls the line switching module to switch the connected non-standard type device to be connected to the analog detection module;

[0051] S03: The analog detection module performs a boost simulation on the connected non-standard type device, obtains a voltage change curve or a current change curve of the load, sends the voltage change curve or the current change curve to an external host through the wireless communication module, receives the power demand of the non-standard type device after analysis and comparison by the external host, and sends it to the control module;

[0052] S04: When the control module receives the power demand of the non-standard type device, it controls the line switching module to switch the connected non-standard type device to be connected to the voltage output module, and controls the voltage output module so that the power supply branch where the non-standard type device is located outputs at the voltage required by the non-standard type device;

[0053] By applying the method of the present application, a corresponding module for identifying the power of the powered device based on the voltage change curve or current change curve is added on the basis of the detection of the standard powered device, so that the POE power supply can be applied to most non-standard powered devices whose interfaces and power connection sequences are the same as those of the standard powered device but only the operating voltages are different, greatly improving the applicability of the POE power supply. Moreover, for some new non-standard devices, compatibility can be quickly achieved by updating the data in the external host database.

[0054] Preferably, the external host is configured with a processing module and a database unit; the processing module is used to receive the voltage change curve or current change curve and perform a search and match in the database unit. If the match is successful, it feeds back the power requirement of the non-standard device bound to the voltage change curve or current change curve that is set, otherwise it feeds back a match failure; the control module issues a device mismatch warning to the outside when receiving the feedback failure information; the database unit is used to store the correspondence between the voltage change curve or current change curve and the power requirement of the non-standard device, and this correspondence can be updated manually in real time;

[0055] The powered device identification module includes multiple device identification chips; the intelligent POE power supply includes multiple connection interfaces for connecting the powered devices, and the device identification chips are connected to the connection interfaces one by one through network cables; multiple device identification chips are all connected to the control module; the voltage output module includes multiple voltage output subunits, and the line switching module includes multiple switching switches; the voltage output subunits are connected to the connection interfaces one by one through network cables, and the switching switches are used to switch the connection between the voltage output subunits and the analog detection module or the control module; the intelligent POE power supply also includes a voltage input module, and multiple voltage output subunits are connected to the voltage input module; the voltage output subunits are used for converting and outputting voltages; when the control module does not receive the identification result of the device identification chip, it controls the corresponding voltage output subunit not to output voltage.

[0056] It should be understood that those of ordinary skill in the art can make improvements or transformations according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present invention.

Claims

1. An intelligent POE power supply, characterized in that, It includes a control module, a power receiving device identification module, a line switching module, a voltage output module, an analog detection module, and a wireless communication module; The power receiving device identification module is used to identify standard and non-standard power receiving devices connected thereto, and feed back the identification results to the control module; The control module is used to control the voltage output module to output for standard devices connected thereto, so that the power supply branch where the standard device is located outputs at 48V; and for non-standard devices connected thereto, control the line switching module to switch the connected non-standard device to be connected to the analog detection module; The analog detection module is used to perform boost simulation on the connected non-standard device, obtain the voltage change curve or current change curve of the load, send the voltage change curve or current change curve to an external host through the wireless communication module, receive the power requirement of the non-standard device after analysis and comparison by the external host, and send it to the control module; The control module is further used to, when receiving the power requirement of the non-standard device, control the line switching module to switch the connected non-standard device to be connected to the voltage output module, and control the voltage output module to make the power supply branch where the non-standard device is located output at the voltage required by the power requirement of the non-standard device.

2. The intelligent POE power supply according to claim 1, wherein The external host is configured with a processing module and a database unit; The processing module is used to receive the voltage change curve or current change curve, and search and match in the database unit. If the match is successful, it feeds back the set power requirement of the non-standard device bound to the voltage change curve or current change curve, otherwise it feeds back a match failure; The control module issues a device mismatch warning to the outside when receiving the feedback failure information.

3. The intelligent POE power supply according to claim 2, characterized in that The database unit is used to store the correspondence between the voltage change curve or current change curve and the power requirement of the non-standard device, and this correspondence can be updated manually in real time.

4. The intelligent POE power supply according to claim 1, characterized in that, The power receiving device identification module includes multiple device identification chips; the intelligent POE power supply includes multiple connection interfaces for connecting power receiving devices, and the device identification chips are connected to the connection interfaces one by one through network cables; multiple said device identification chips are all connected to the control module; when the control module does not receive the identification result of the device identification chip, it controls the corresponding voltage output sub-unit not to output voltage.

5. The intelligent POE power supply according to claim 4, characterized in that, The voltage output module includes multiple voltage output sub-units, and the line switching module includes multiple switching switches; the voltage output sub-units are connected to the connection interfaces one by one through network cables, and the switching switches are used to switch the connection between the voltage output sub-units and the analog detection module or the control module.

6. The intelligent POE power supply according to claim 5, characterized in that, The intelligent POE power supply further includes a voltage input module, and multiple said voltage output sub-units are connected to the voltage input module; the voltage output sub-units are used for conversion and output of voltage.

7. The intelligent POE power supply according to claim 5, wherein, The simulation detection module includes a detection chip, a boost unit, and a load; the simulation detection module further includes a voltage detection unit or a current detection unit for detecting the voltage across the load or the current passing through; the detection chip is connected to the voltage detection unit or the current detection unit, and the detection chip is connected to the boost unit, the wireless communication module, and the control module; the switching switch is connected to the detection chip and controlled by it.

8. A method for implementing an intelligent POE power supply, which applies the intelligent POE power supply described in any one of claims 1-7, characterized in that, The method includes the steps of: The power receiving device identification module identifies the connected power receiving devices as standard type and non-standard type, and feeds back the identification result to the control module; The control module controls the voltage output module to output for the connected standard type devices, so that the power supply branch where the standard type devices are located outputs at 48V; and for the connected non-standard type devices, the control module controls the line switching module to switch the connected non-standard type devices to be connected to the simulation detection module; The simulation detection module performs boost simulation on the connected non-standard type devices, and obtains the voltage change curve or current change curve of the load, sends the voltage change curve or current change curve to the external host through the wireless communication module, receives the power requirement of the non-standard type device after analysis and comparison by the external host, and sends it to the control module; When the control module receives the power requirement of the non-standard type device, it controls the line switching module to switch the connected non-standard type device to be connected to the voltage output module, and controls the voltage output module to make the power supply branch where the non-standard type device is located output at the voltage required by the non-standard type device.

9. The method for implementing an intelligent POE power supply according to claim 8, wherein The external host is configured with a processing module and a database unit; the processing module is used to receive the voltage change curve or current change curve, and search and match in the database unit. If the match is successful, it feeds back the set power requirement of the non-standard type device bound to the voltage change curve or current change curve, otherwise it feeds back a match failure; the control module issues a device mismatch warning to the outside when receiving the feedback failure information; the database unit is used to store the correspondence between the voltage change curve or current change curve and the power requirement of the non-standard type device, and this correspondence can be updated manually in real time; The power receiving device identification module includes multiple device identification chips; the intelligent POE power supply includes multiple connection interfaces for connecting power receiving devices, and the device identification chips are connected to the connection interfaces one by one through network cables; multiple device identification chips are all connected to the control module; the voltage output module includes multiple voltage output sub-units, and the line switching module includes multiple switching switches; the voltage output sub-units are connected to the connection interfaces one by one through network cables, and the switching switches are used to switch the connection between the voltage output sub-units and the simulation detection module or the control module; the intelligent POE power supply further includes a voltage input module, and multiple voltage output sub-units are connected to the voltage input module; the voltage output sub-units are used for converting and outputting voltage; the control module controls the corresponding voltage output sub-unit not to output voltage when it does not receive the identification result of the device identification chip.

10. The intelligent POE power supply implementation method according to claim 9, characterized in that, The analog detection module includes a detection chip, a boosting unit, and a load; the analog detection module further includes a voltage detection unit or a current detection unit for detecting the voltage across the load or the current passing through; the detection chip is connected to the voltage detection unit or the current detection unit, and the detection chip is connected to the boosting unit, the wireless communication module, and the control module; the switching switch is connected to the detection chip and controlled by it.

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