CN116886454B

CN116886454B - Power supply device and system, audio acquisition equipment and system and power supply method

Info

Publication number: CN116886454B
Application number: CN202310340652.9A
Authority: CN
Inventors: 魏仑; 黄翠兰; 郑技超; 刘威河
Original assignee: Guangzhou Kaidelian Intelligent Technology Co ltd
Current assignee: Guangzhou Kaidelian Intelligent Technology Co ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2024-08-16
Anticipated expiration: 2043-03-31
Also published as: CN116886454A

Abstract

The invention discloses a power supply device and system, an audio acquisition device and system and a power supply method. The power supply device includes: the system comprises a power supply control module, a hierarchical transmission control module, a data processing module and two network port modules. The two network port modules are respectively used for connecting a front-stage device and a rear-stage device; the front-stage device is a main control device or a front-stage power supply device, and the rear-stage device is a rear-stage power supply device; the power supply control module is respectively connected with the two network port modules and the data processing module; the data processing module is used for carrying out data interaction with the front-stage device and the rear-stage device through the two network port modules and outputting a hierarchical transmission control signal; the hierarchical transmission control module is used for controlling whether the two network port modules are communicated or not according to the hierarchical transmission control signal. The embodiment of the invention can provide conditions for controlling whether each power supply device in the power supply system is powered on or not according to the requirement so as to improve the reliability of the power supply system.

Description

Power supply device and system, audio acquisition equipment and system and power supply method

Technical Field

The invention relates to the technical field of network power supply, in particular to a power supply device and system, an audio acquisition device and system and a power supply method.

Background

With the rapid development of network communication technology, a cascading network power supply mode is gradually widely applied to network terminals. As network communication systems tend to be increasingly complex and integrated, power supply systems often include multiple electronic devices. Taking an audio collection system as an example, in application scenes such as teaching and conferences, a plurality of audio collection devices are required to be arranged in the audio collection system so as to achieve a good pickup effect.

In the prior art, a power adapter is connected with a main control device, and power is supplied to each cascaded power supply device through the main control device; meanwhile, data interaction can be realized between the main control device and each power supply device, so that the electronic equipment provided with the power supply device can normally obtain power and support a normal communication function. However, in the prior art, the structure of the power supply device and the power supply mechanism configured in the main control device do not support to control whether the power supply devices at all levels are powered on, and the main control device supplies power to all cascaded power supply devices simultaneously, so that the system cannot work normally possibly due to insufficient power of the power adapter, the data processing system is paralyzed due to mismatching of the number of the power supply devices actually connected with the processing capacity of the data processing algorithm in the main control device, and the problems of excessive overcurrent and burnout of partial equipment due to simultaneous power-on of more power supply devices are solved. Therefore, the reliability of the existing power supply system is poor.

Disclosure of Invention

The invention provides a power supply device and system, audio acquisition equipment and system and a power supply method, which provide conditions for controlling whether each power supply device in a power supply system is powered on or not according to requirements so as to improve the reliability of the power supply system.

In a first aspect, an embodiment of the present invention provides a power supply apparatus, including: the system comprises a power supply control module, a hierarchical transmission control module, a data processing module and two network port modules;

One network port module is used for connecting a front-stage device, and the other network port module is used for connecting a rear-stage device; the front-stage device is a main control device or a front-stage power supply device, and the rear-stage device is a rear-stage power supply device;

The power supply control module is respectively connected with the two network port modules and the data processing module; the power control module is used for supplying power to the data processing module based on a power signal provided by the front-stage device;

the data processing module is respectively connected with the two network port modules, and is used for carrying out data interaction with the front-stage device and the rear-stage device through the two network port modules and outputting a hierarchical control signal;

the hierarchical transmission control module is connected between the two network port modules, and the control end of the hierarchical transmission control module is connected with the data processing module; the hierarchical control module is used for controlling whether the two network port modules are communicated or not according to the hierarchical control signal so as to control whether the subsequent device is powered on or not.

Optionally, the main control device generates a hierarchical control instruction according to the upper limit of the cascade number of the power supply devices and the number of the power supply devices which are powered on in the power supply system, and the data processing module outputs the hierarchical control signal according to the hierarchical control instruction;

or the data processing module outputs the hierarchical control signal according to the upper limit of the cascade number of the power supply devices and the number of the power supply devices which are powered in the power supply system.

Optionally, the method for acquiring the number of the power supply devices which are powered on in the power supply system includes:

when the power supply device is powered on, the data processing module feeds back power-on information to the main control device, and the main control device acquires the number of the power supply devices which are powered on in the power supply system according to the power-on information;

Or when the power supply device is powered on, the data processing module acquires the cascade quantity flag information of the preceding device, forms the cascade quantity flag information of the current stage power supply device according to the cascade quantity flag information of the preceding device, and acquires the quantity of the powered on power supply devices in the power supply system.

Optionally, the portal module includes: a network interface and a rectifying unit; the network port module is connected with the front-stage device or the rear-stage device through the network interface;

in the power supply device, the network interface is respectively connected with the input end of the rectifying unit and the data interaction end of the data transmission module; the power supply pins in the network interfaces of the two network port modules are connected through the hierarchical transmission control module;

the positive electrode output end of the rectifying unit is connected with the positive electrode power input end of the power control module, and the negative electrode output end of the rectifying unit is connected with the negative electrode power input end of the power control module.

Optionally, the hierarchical transmission control module includes:

The control unit is used for controlling the potential of the output end of the control unit according to the level transmission control signal;

The action unit is connected between the power supply pins of the two network interfaces, and the control end of the action unit is connected with the output end of the control unit; the action unit is used for being switched on or off according to the electric potential of the output end of the control unit.

Optionally, the control unit includes: a first transistor and a first resistor;

The first resistor is connected between the control end of the control unit and the control electrode of the first transistor, the first electrode of the first transistor is grounded, and the second electrode of the first transistor is connected with the output end of the control unit.

Optionally, the power supply pins of the network interface include a power supply positive electrode pin and a power supply ground pin;

The action unit comprises: a second transistor, a third transistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, and a seventh resistor;

The first end of the second resistor and the first end of the third resistor are electrically connected with the control end of the action unit, the second end of the second resistor is respectively connected with the first end of the fourth resistor and the first end of the fifth resistor, the second end of the fourth resistor is connected with the control electrode of the second transistor, and the second end of the fifth resistor is connected with the first electrode of the second transistor; the second end of the third resistor is connected with the first end of the sixth resistor and the first end of the seventh resistor respectively, the second end of the sixth resistor is connected with the control electrode of the third transistor, the second end of the seventh resistor is connected with the first electrode of the third transistor, and the first electrode of the second transistor is connected with the first electrode of the third transistor; the second pole of the second transistor and the second pole of the third transistor are respectively correspondingly connected with the power supply anode pins of the two network interfaces;

Or the action unit comprises: the relay comprises a coil, a first switch and a second switch; a first end of the coil is connected with a first power supply signal, and a second end of the coil is connected with a control end of the action unit; the first switch is connected between the two power supply anode pins; the second switch is connected between the two power supply grounding pins.

Optionally, the power control module includes: a slow start unit and a power supply conversion unit;

the input end of the slow starting unit is connected with the network port module, and the output end of the slow starting unit is connected with the input end of the power supply conversion unit; the slow start unit is used for delaying the transmission of a power signal provided by the pre-stage device to the power conversion unit when any one of the network port modules is connected with the pre-stage device;

The output end of the power supply conversion unit is connected with the data processing module; the power supply conversion unit is used for converting a power supply signal provided by the front-stage device into a power supply voltage of the data processing module.

Optionally, the portal module includes: a network interface and a rectifying unit; the network interface is used for connecting the front-stage device or the back-stage device; the network interface is connected with the input end of the rectifying unit;

The slow start unit includes: a fourth transistor, a first capacitor, a first diode, and an eighth resistor;

The first pole of the fourth transistor is connected with the negative electrode output end of the rectifying unit, the second pole of the fourth transistor is connected with the negative electrode input end of the power conversion unit, the control pole of the fourth transistor is connected with the anode of the first diode, and the cathode of the first diode is respectively connected with the positive electrode output end of the rectifying unit and the positive electrode input end of the power conversion unit; a first end of the first capacitor is connected with a first pole of the fourth transistor; the second end of the first capacitor is respectively connected with the first end of the eighth resistor and the control electrode of the fourth transistor; the second end of the eighth resistor is connected with the cathode of the first diode.

Optionally, the data processing module includes: a data processing unit and a network switching chip;

The power supply control module is respectively connected with the data processing unit and the power supply end of the network switching chip; the data transmission ends of the two network port modules are correspondingly connected with the two first data interaction ends of the network exchange chip respectively; the second data interaction end of the network exchange chip is connected with the data interaction end of the data processing unit; and the output end of the data processing unit is connected with the control end of the hierarchical transmission control module.

In a second aspect, an embodiment of the present invention further provides a power supply system, including: the main control device and at least two stages of power supply devices which are connected in cascade are provided by any embodiment of the invention;

the front-stage device of the power supply device of the first stage is the main control device, and the front-stage devices of the power supply devices of other stages are the front-stage power supply devices.

In a third aspect, an embodiment of the present invention further provides a power supply method, which is applicable to the power supply system provided in any embodiment of the present invention; the power supply method comprises the following steps:

The main control device and the data processing modules in the power supply devices at all levels control the hierarchical control modules in the power supply devices to be conducted step by step until the number of the power supply devices which are powered on reaches the upper limit of the cascade number of the power supply devices, and the hierarchical control modules in the last power supply device which are powered on are controlled to be turned off.

In a fourth aspect, an embodiment of the present invention further provides an audio capturing apparatus, including: the power supply device provided by any embodiment of the invention.

In a fifth aspect, an embodiment of the present invention further provides an audio acquisition system, including: the recording and broadcasting host and at least two stages of audio acquisition equipment which are connected in cascade are provided by any embodiment of the invention;

The audio acquisition equipment is in cascade connection through the power supply device, and the recording and broadcasting host comprises the main control device; the preceding-stage equipment of the first-stage audio acquisition equipment is the recording and broadcasting host computer, and the preceding-stage equipment of the other-stage audio acquisition equipment is the preceding-stage audio acquisition equipment.

In a sixth aspect, an embodiment of the present invention further provides a power supply method, which is applicable to the flat audio capturing system provided in any embodiment of the present invention; the power supply method comprises the following steps:

And the master control device in the recording and broadcasting host and the data processing module in the power supply device of each stage of audio acquisition equipment gradually control the conduction of the cascade control module in the power supply device of the audio acquisition equipment until the number of the audio acquisition equipment which is powered on reaches the upper limit of the cascade number of the audio acquisition equipment, and control the last stage of the audio acquisition equipment which is powered on to turn off the cascade control module in the power supply device of the audio acquisition equipment.

Optionally, the power supply control process of any stage of audio acquisition equipment comprises:

when the audio acquisition equipment is powered on, a data processing module in a power supply device of the audio acquisition equipment feeds back power-on information to the main control device;

The main control device forms equipment number mark information aiming at the audio acquisition equipment according to the obtained electric information, and transmits the equipment number mark information and the upper limit of the cascade number of the audio acquisition equipment to the data processing module;

the data processing module judges whether the number of the audio acquisition devices which are powered on in the audio acquisition system reaches the upper limit of the cascade number of the audio acquisition devices according to the device number mark information;

If yes, the data processing module controls the hierarchical transmission control module to be turned off;

If not, the data processing module controls the conduction of the hierarchical transmission control module.

Optionally, before the conduction of the cascade control module in the power supply device of the audio acquisition device is controlled step by step, the method further comprises:

the main control device forms configuration information according to the application requirement of the audio acquisition system, and acquires the upper limit of the cascade number of the audio acquisition equipment according to the configuration information.

Optionally, acquiring the upper limit of the cascade number of the audio acquisition device according to the configuration information includes:

Determining a first upper number limit according to the configuration information;

determining a second upper limit of the number according to the power of the power adapter connected with the recording and broadcasting host;

The smaller of the first upper number limit and the second upper number limit is taken as an upper number limit of cascading of the audio acquisition devices.

The power supply device provided by the embodiment of the invention is provided with two network port modules, a power supply control module, a hierarchical transmission control module and a data processing module. The two network port modules are respectively used for connecting the front-stage device and the rear-stage device, and the power supply control module can realize the power supply to each functional module in the power supply device based on the power supply signal provided by the front-stage device, so that the normal work of the power supply device is ensured. The on-off state of the hierarchical transmission control module can be controlled through the data processing module, so that whether a power signal of the front-stage device can be transmitted to the rear-stage device or not is controlled, and whether the rear-stage device is powered on or not is controlled. Therefore, the main control device in the power supply system can provide corresponding quantity of power supply device supporting capability in different application scenes, and can control redundant power supply devices to be incapable of achieving power supply, so that the problem that at least part of power supply devices cannot be powered on normally due to excessive power supply device access to the system and power on is avoided, and even the system is paralyzed is avoided. Therefore, compared with the prior art, the embodiment of the invention can provide conditions for controlling whether each power supply device in the power supply system is powered on or not according to the requirement, so that the reliability of the power supply system is improved, and the power supply effect is ensured.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a power supply device according to an embodiment of the present invention;

Fig. 2 is a schematic signal flow diagram of a power supply device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another power supply device according to an embodiment of the present invention;

Fig. 4 is a schematic diagram of a connection relationship between a network port module and a power control module according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a hierarchical transmission control module according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of another hierarchical control module according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a power supply system according to an embodiment of the present invention;

Fig. 8 is a schematic structural diagram of an audio capturing device according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of an audio acquisition system according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of another audio acquisition system according to an embodiment of the present invention;

FIG. 11 is a schematic flow chart of a power supply method according to an embodiment of the present invention;

fig. 12 is a schematic flow chart of a power supply control process of an audio acquisition device according to an embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The embodiment of the invention provides a power supply device. Fig. 1 is a schematic structural diagram of a power supply device according to an embodiment of the present invention. Referring to fig. 1, the power supply apparatus includes: two portal modules 10, a power control module 20, a hierarchical control module 30 and a data processing module 40.

One of the portal modules 10 is used for connecting with a pre-stage device, and the other portal module 10 is used for connecting with a post-stage device. The power control module 20 is respectively connected with the two network port modules 10 and the data processing module 40; the power control module 20 is configured to supply power to the data processing module 40 based on a power signal provided by a preceding device. The data processing module 40 is respectively connected with the two network port modules 10, and the data processing module 40 is used for performing data interaction with the front-stage device and the rear-stage device through the two network port modules 10 and outputting a hierarchical control signal. The hierarchical transmission control module 30 is connected between the two network port modules 10, and a control end 31 of the hierarchical transmission control module 30 is connected with the data processing module; the hierarchical control module 30 is configured to control whether the two network port modules 10 are connected according to the hierarchical control signal, so as to control whether the subsequent device is powered.

For example, in a power supply system constituted by a master device and each power supply device in cascade, a preceding stage device may be the master device or a preceding stage power supply device, and a subsequent stage device may be a subsequent stage power supply device. For example, for the first-stage power supply device, the former-stage device is a master control device, and the latter-stage device is a second-stage power supply device. For any other stage power supply device, the preceding stage device is the power supply device of the preceding stage. The rear-stage devices of any other stage power supply devices except the last stage power supply device are the rear-stage power supply devices. The last-stage power supply device may not be connected to the latter-stage device, i.e., the portal module 10 for connecting to the latter-stage device in the last-stage power supply device may be left empty. Illustratively, the power supply devices of all levels are connected through a network port module 10. The power supply device may be integrated in an electronic device such as a microphone and a monitor.

Illustratively, the portal module 10 may include a peripheral connection 11, a power output 12, a data transmission 13, and a power connection 14. The power control module 20 may include a power input 21 and a power output 22. The hierarchical control module 30 may include a control terminal 31 and two hierarchical connection terminals 32. The data processing module 40 may comprise a power supply 41, a hierarchical control output 42 and two data interaction terminals 43. The specific connection relation and function of each functional module in the power supply device can be as follows:

the peripheral connection terminal 11 of the portal module 10 is used for connecting to an external device, such as a front-stage device or a rear-stage device. The peripheral connection terminal 11 may include an external power connection terminal for connecting to a power supply portion in an external device, and an external data connection terminal for connecting to a data transmission portion in an external device. In some cases, the external power connection and the external data connection may also be common.

The power supply device can be specifically divided into a data transmission path and a power transmission path, and the power transmission path can further comprise an internal power supply path and a hierarchical transmission power supply path.

For the data transmission path: the data transmission ends 13 of the two network port modules 10 are respectively and correspondingly connected with one data interaction end 43 in the data processing module 40 to form a data transmission path of an external device, namely one peripheral connection end 11, one data transmission end 13, one data interaction end 43, the inside of the data processing module 40, the other data interaction end 43, the other data transmission end 13, the other peripheral connection end 11 and the other external device, and the data interaction between the external device and the data processing module 40 is realized through the network port module 10. For example, the data interaction between the master control device and a certain level of power supply device can be realized through the data transmission path hierarchy of each power supply device between the master control device and the certain level of power supply device.

For the internal power supply path: the power supply output terminals 12 of each network port module 10 are connected to the power supply input terminal 21 of the power supply control module 20, for example, two power supply output terminals 12 are connected to the same power supply input terminal 21, and the power supply output terminal 22 of the power supply control module 20 is connected to the power supply terminal 41 of the data processing module 40. In this way, an internal power supply path of the front-stage device, the peripheral connection terminal 11, the power supply output terminal 12, the power supply input terminal 21, the inside of the power supply control module 20, the power supply output terminal 22, the power supply terminal 41, and the inside of the data processing module 40 can be configured, and after the power supply to the network port module 10 connected to the front-stage device is obtained, a power supply signal (for example, a power supply voltage) provided by the front-stage device can be provided to the power supply control module 20 for processing. The power control module 20 may convert the power signal provided by the pre-stage device to provide a power supply voltage for each component in the data processing module 40. Wherein the power control module 20 may provide different supply voltages for different electrical devices in the data processing module 40.

For the hierarchical power path: the power supply connection ends 14 of the two network port modules 10 are respectively and correspondingly connected with the two level transmission connection ends 32 of the level transmission control module 30, namely, the power supply connection ends 14 of the two network port modules 10 are connected through the level transmission control module 30 to form a level transmission power supply path of a front-stage device, one network port module 10, the level transmission control module 30, the other network port module 10 and a back-stage device. The on-off state of the hierarchical transmission control module 30 determines the on-off state of the hierarchical transmission power path, and further determines whether the latter device can obtain the power signal provided by the former device.

The data processing module 40 may acquire, for example, upper limit information of the number of cascading of power supply apparatuses allowed in the power supply system in which it is located and information of the number of power supply apparatuses that have been powered on in the system through data interaction with the master control apparatus and the devices in the previous stage, and perform comparison between the upper limit of the number of cascading of power supply apparatuses and the number of power supply apparatuses that have been powered on in the power supply system. When the number of the obtained power devices does not reach the upper limit of the cascade number, the data processing module 40 can control the cascade control signal output by the cascade control output end 42 to be the conduction potential of the cascade control module 30, so that the current cascade power supply path is conducted, and the next stage power supply device obtains power. In contrast, when the number of the powered devices reaches the upper limit of the cascade number, the data processing module 40 may control the hierarchical control signal to be the cut-off potential of the hierarchical control module 30, so that the hierarchical power supply path is disconnected, and the next power supply device cannot be powered. For example, the upper limit of the cascade number of the power supply device may be stored in the master device, and transmitted to each stage of the data processing module 40 by the master device, for example, the master device directly transmits the upper limit of the cascade number of the power supply device to the first stage of the data processing module 40, and transmits the upper limit of the cascade number of the power supply device to the subsequent stage of the data processing module 40 through a data transmission path between each stage of the data processing module 40; Or the upper limit of the number of cascades of the power supply devices may be directly stored in each stage of the data processing module 40. After the power supply devices at all levels are powered on, the data processing module 40 of the power supply devices at all levels can feed back power information to the main control device, and the main control device counts the number of the power supply devices which are powered on; or the number of the power supply devices that have been powered on in the power supply system may be directly counted by the data processing module 40, for example, when the power supply device of the current stage is powered on, the data processing module 40 of each stage obtains the cascade number flag information of the preceding stage device and forms the cascade number flag information of the current stage power supply device according to the cascade number flag information, and the cascade number flag information may represent the number of the power supply devices that have been powered on in the system. For example, when the first-stage power supply device is connected with the main control device, the data processing module 40 of the main control device acquires the cascade quantity flag information of the main control device, and adds one to the cascade quantity flag information of the main control device to be used as own cascade quantity flag information, namely, 1, wherein the cascade quantity flag information can represent that the quantity of the power supply devices which are already powered in the power supply system at the moment is 1; the data processing module 40 in each stage of power supply device can add one to the cascade quantity mark information of the previous stage device as own cascade quantity mark information after power is obtained; and then the value of the cascading quantity flag information of the power supply device which is powered on at the last stage at the current moment is the quantity of the power supply devices which are powered on in the system at the current moment. Then, for any stage of the data processing module 40, the master control device may transmit the upper limit of the number of cascaded power supply devices and the number of the power supply devices that have been powered in the power supply system to the data processing module 40, so that the data processing module 40 compares the two pieces of information and outputs a hierarchical control signal. The main control device may only transmit the number of the power supply devices that have been powered in the power supply system to the data processing module 40, so that the data processing module 40 compares the two numbers of information and outputs the hierarchical control signal. The data processing module 40 may also obtain the number of the power supply devices that have been powered according to the cascade number flag information, and compare the two number information with the output cascade control signal. The specific control method is not limited herein.

Or the above comparison and judgment process can be mainly performed in the main control device, that is, the main control device performs comparison between the upper limit of the cascade number of the power supply devices and the number of the power supply devices which are already powered in the power supply system, and after the comparison result is obtained, the main control device can directly transmit the hierarchical control command to the data processing modules 40 in the power supply devices at all levels so as to control the electric potential of the hierarchical control signal output by the data processing modules 40 at all levels. For example, the instruction address and the instruction content may be included in the hierarchical control instruction, so that each level of data processing module 40 obtains the instruction content for the current level of power supply device according to the instruction address, and generates the corresponding hierarchical control signal according to the instruction content.

Based on the setting of the hierarchical power supply path, the main control device can set the upper limit of the cascade number of the power supply devices according to the application environment, working conditions (such as the power of an accessed power adapter) and various configuration information (such as the total number of devices capable of performing data processing in a data processing algorithm configured in the main control device) of the system, and the number of the power supply devices which are electrified in the system is controlled so as to ensure the normal power supply of the system. And when more devices need to be electrified, the main control device can also control the power supply devices at all levels to be electrified in batches in the electrifying process. For example, the power supply devices are grouped from the first stage to the last stage in sequence, each group comprises part of the power supply devices, and the main control device can wait for the power supply devices in the previous group to complete the power supply and then control the power supply devices in the next group to power up, so that the problem of overlarge transient starting current caused by the simultaneous power up of more power supply devices is avoided.

As can be seen from the above analysis, the two network port modules 10 in the power supply device are not distinguished, and the connection modes of the two network port modules 10 and other internal functional modules are the same, so that the same function can be realized, and the free switching of the input and output of the power supply signal and the input and output of the data signal can be realized. Therefore, the two network port modules 10 provided by the embodiment of the invention can be used indiscriminately, have extremely strong compatibility, can avoid the risk of misplug of network signal wires, are convenient for the installation and deployment of a power supply device, are beneficial to simplifying the circuit wiring structure, do not need to preset a network port cascade structure according to the flow direction of a power supply, have simple and convenient system installation and operation steps, provide great convenience for the use of users, and can be widely applied to various industrial fields.

In order to clearly show the connection relationship between the power supply device and the front-back stage device and the specific signal transmission path, fig. 2 shows a specific connection structure of the power supply device. In fig. 2, for the sake of distinction, the portal module connected to the preceding-stage device is denoted as a first portal module 101, and the portal module connected to the following-stage device is denoted as a second portal module 102. In the example of fig. 2, the data transmission path is marked by a double-headed arrow, which characterizes that the power supply device can realize the double-sided interaction of the data signals; the power transmission path is marked with a unidirectional arrow, which characterizes the specific flow direction of the power signal provided by the pre-stage device 200.

Referring to fig. 2, when the power supply device 100 is connected to the front-stage device 200 and the rear-stage device 300, a complete data transmission path, i.e., the front-stage device 200, the first external data connection 1112, the first data transmission terminal 131, the first data interaction terminal 431, the second data interaction terminal 432, the second data transmission terminal 132, the second external data connection 1122, and the rear-stage device 300, can be formed, so as to implement bidirectional interaction of data signals. The internal power supply path of the pre-stage apparatus 200→the first external power supply connection 1111→the first power supply output 121→the power supply input 21→the inside of the power supply control module 20→the power supply output 22→the power supply terminal 41→the inside of the data processing module 40 is formed. A cascade power supply path is formed from the front-stage apparatus 200 to the first external power supply connection terminal 1111 to the first power supply connection terminal 141 to the first cascade connection terminal 321 to the inside of the cascade control module 30 to the second cascade connection terminal 322 to the second power supply connection terminal 142 to the second external power supply connection terminal 1121 to the rear-stage apparatus 300.

It should be noted that the above embodiments are merely exemplary descriptions for specifically explaining the operation of the power supply device, and the port arrangement and the port number of each functional module in fig. 1 and 2 are not intended to limit the present invention. In practical application, the ports can be multiplexed according to practical requirements, the number of the ports can be increased or decreased, and the port types of the functional modules can be changed or increased or decreased. For example, the power connection 14 of the portal module 10 and the external power connection may be combined.

In the power supply device 100 provided by the embodiment of the invention, two network port modules 10, a power supply control module 20, a hierarchical transmission control module 30 and a data processing module 40 are provided. The two network port modules 10 are respectively used for connecting the pre-stage device 200 and the post-stage device 300, and the power control module 20 can realize power supply to each functional module in the power supply device 100 based on the power signal provided by the pre-stage device 200, so that the power supply device 100 can work normally. The data processing module 40 can control the on-off state of the cascade control module 30, so as to control whether the power signal of the front-stage device 200 can be transmitted to the rear-stage device 300, so that the power-on state of the rear-stage device 300 is controllable. Therefore, the main control device in the power supply system can provide corresponding quantity of power supply device supporting capability in different application scenarios, and can control the redundant power supply device 100 to be unable to power, so as to avoid that at least part of the power supply devices 100 are excessively connected into the system and are electrified to cause the failure of normal power supply, and even the system is paralyzed. Therefore, compared with the prior art, the embodiment of the invention can provide conditions for controlling whether each power supply device 100 in the power supply system is powered on or not according to the need, so as to improve the reliability of the power supply system and ensure the power supply effect.

The above embodiments exemplarily illustrate the operation of each functional module in the power supply device 100. The following is an exemplary description of specific structures that each functional module may have.

Fig. 3 is a schematic structural diagram of another power supply device according to an embodiment of the present invention. Referring to fig. 3, in one embodiment, optionally, any portal module 10 may include: a network interface 110 and a rectifying unit 120. Wherein the network interface 110 is used to connect the pre-stage device 200 or the post-stage device 300. The network interface 110 is connected to the input of the rectifying unit 120 and the data interaction end 43 of the data transmission module 40, respectively. The power supply pins in the network interfaces 110 of the two network port modules 10 are connected through the hierarchical control module 30. The positive electrode output end a3 of the rectifying unit 120 is used as the positive electrode power supply output end 12-1 of the network port module 10 and is connected with the positive electrode power supply input end 21-1 of the power supply control module 20, and the negative electrode output end a4 of the rectifying unit 120 is used as the negative electrode power supply output end 12-2 of the network port module 10 and is connected with the negative electrode power supply input end 21-2 of the power supply control module 20. Illustratively, the positive and negative power supply outputs 12-1, 12-2 together comprise the power supply output 12 of the portal module 10; the positive power input 21-1 and the negative power input 21-2 together form the power input 21 of the power control module 20.

In which a plurality of pins may be provided in the network interface 110 to connect with an external device, a structure in which a Data pin Data and a power pin (including a power positive pin eth_vs and a power ground pin eth_gnd) in the network interface 110 are separately provided is exemplarily shown in fig. 3 in order to describe a connection relationship of the network interface 110 with other functional modules. The number of pins is shown as an example, and is not a limitation of the present invention. Specifically, the part of the front end of each pin exposed to the air can be used as a peripheral connection end of the network interface, namely, the peripheral connection end 11 shown in fig. 1; for example, the front end of the Data pin Data may be an external Data connection terminal, and the front end of the power pin may be an external power connection terminal. The rear ends of the pins are connected with functional modules (such as metal wiring connection) in the power supply device; for example, the rear end of the Data pin Data may be used as the Data transmission end 13 of the network port module 10, the rear end of the power pin may be connected to the rectifying unit 120, and the rear end of the positive power pin eth_vs and/or the ground power pin eth_gnd may be used as the power supply connection end 14 of the network port module 10. Or any electrical connection point on the power supply pin may be led out as the power supply connection end 14, and the specific location of the power supply connection end 14 is not limited herein.

Illustratively, the network interface 110 may employ an RJ45 portal. In practical application, the signal line pairs 1&2 and 3&6 of the RJ45 network port can be used as the network port signal line pair (i.e. external data connection end), and a technician can select one group of network port signal line pairs (such as 1& 2) as the network signal transmitting end and the other group of network port signal line pairs (such as 3&6) as the network signal receiving end. And the signal line pairs 4&5, 7&8 of the RJ45 network port can be used as network port power line pairs (namely external power connection ends) to realize the power-on process. Or the signal line pairs 1&2, 3&6 may be multiplexed into a network port power line pair, and the specific arrangement mode is not limited. According to the embodiment, each power supply device is provided with two RJ45 network ports, the network ports are used for network data communication and provide power supply functions, the functions of the two RJ45 network ports are not distinguished in design, the two RJ45 network ports have the same connection mode in the power supply device, misplug network signal lines can be effectively prevented, and equipment installation and deployment are facilitated.

The rectifying unit 120 may be any rectifying device structure. Illustratively, the input terminals of the rectifying unit 120 may include a first input terminal a1 and a second input terminal a2, which are respectively connected to the positive power supply pin eth_vs and the ground power supply pin eth_gnd of the network interface 110. By arranging the rectifying unit 120, the power supply signals accessed by the network interfaces 110 can be adjusted, so that when any network interface 110 is connected with the pre-stage device 200, the power supply signals provided by the pre-stage device 200 can be adjusted to power supply signals with uniform polarity through the rectifying unit 120, positive voltages are transmitted to the positive power supply input end 21-1 of the power supply control module 20, negative voltages or ground signals are transmitted to the negative power supply input end 21-2 of the power supply control module 20, and universality of the network port module 10 is improved. And, since the rectifying unit 120 only allows the power signal to be transmitted from the network interface 110 to the power control module 20, and does not have a reverse transmission function, the rectifying unit 120 further has a reverse flow preventing function, so that faults such as short circuits of the current stage power supply device can be prevented from being transmitted to the advanced device 200, and the fault range is limited.

Specifically, referring to fig. 4, the power positive terminal eth_vs may be connected to a 48V dc voltage when the pre-stage device 200 is connected, and the power ground terminal eth_gnd may be connected to ground when the pre-stage device 200 is connected. The rectifying unit 120 may specifically include a full-bridge rectifying circuit composed of four diodes. Terminal 1 of the full-bridge rectifying circuit serves as a positive output terminal a3 of the rectifying unit 120, terminal 4 serves as a negative output terminal a4 of the rectifying unit 120, terminal 2 serves as a second input terminal a2 of the rectifying unit 120, and terminal 3 serves as a first input terminal a1 of the rectifying unit 120. In addition, a peripheral protection circuit including a transient suppression diode, a filter resistor, and the like may be provided in the port module 10, and connected between the positive power supply pin eth_vs and the ground power supply pin eth_gnd, for example.

With continued reference to fig. 3, in one embodiment, the power control module 20 optionally includes: the power conversion unit 210 is configured to convert a power signal provided by the pre-stage device 200 into a power supply voltage of the data processing module 40. For example, the power conversion unit 210 may employ a voltage conversion chip or a low dropout linear regulator, etc., to convert the 48V power signal transmitted from the rectification unit 120 into voltages of 1.8V, 3.3V, 5V, etc., to supply power to the respective electrical devices in the data processing module 40. For example, the output terminals of the power conversion unit 210 may include a first output terminal c2 and a second output terminal c3 as the first power output terminal 22-1 and the second power output terminal 22-2 of the power control module 20, respectively. Or the power conversion unit 210 may further comprise more output terminals for supplying power to different functional units in the power supply device 100.

Further, the power control module 20 may further include: a slow start unit 220. The input end of the slow start unit 220 is used as the power input end of the power control module 20 and is connected with the network port module 10. Illustratively, the input terminals of the slow start unit 220 include a first output terminal b1 and a second input terminal b2, the first input terminal b1 of the slow start unit 220 can be used as the positive power input terminal 21-1 of the power control module 20, and the second input terminal b2 can be used as the negative power input terminal 21-2 of the power control module 20. The output terminal b3 of the slow start unit 220 is connected to the input terminal c1 of the power conversion unit 210. The output terminal b3 of the slow start unit 220, the input terminal c1 of the power conversion unit 210, and each output terminal of the power conversion unit 210 may include a positive terminal and a negative terminal, which are simplified in the drawings, and only one connection terminal is exemplarily depicted. The slow start unit 220 is configured to delay transmission of a power signal provided by the pre-stage device 200 to the power conversion unit 210 when any one of the network port modules 10 is connected to the pre-stage device 200. According to the embodiment, the power-on delay is increased to ensure that all levels of power supply devices are powered on in sequence instead of simultaneously, and then the power-on delay is matched with the control of all levels of hierarchical transmission control modules 30 to enable the multi-level power supply devices to be powered on in stages, so that the whole slow power-on of a system circuit can be ensured, the condition that the power supply circuit is not abnormal in circuit operation caused by overload is confirmed, and the protection circuit function can be realized.

Specifically, referring to fig. 4, the slow start unit 220 may include: a fourth transistor Q4, a first capacitor C1, a first diode D1 and an eighth resistor R8. The first pole of the fourth transistor Q4 is connected to the negative output end (i.e., terminal 4) of the rectifying unit 120, the second pole of the fourth transistor Q4 is connected to the negative input end of the power conversion unit (not shown in the figure), the control pole of the fourth transistor Q4 is connected to the anode of the first diode D1, and the cathode of the first diode D1 is connected to the positive output end (i.e., terminal 1) of the rectifying unit 120 and the positive input end of the power conversion unit (not shown in the figure), respectively; a first end of the first capacitor C1 is connected with a first pole of the fourth transistor Q4; the second end of the first capacitor C1 is respectively connected with the first end of the eighth resistor R8 and the control electrode of the fourth transistor Q4; the second end of the eighth resistor R8 is connected to the cathode of the first diode D1.

The fourth transistor Q4 may be a MOS transistor, for example, an NMOS transistor, where a gate electrode is used as a control electrode, a source electrode is used as a first electrode, and a drain electrode is used as a second electrode. The first capacitor C1, the first diode D1 and the eighth resistor R8 form a delay buffer circuit, and when any rectifying unit 120 outputs a power signal, the delay buffer circuit can control the control gate potential of the fourth transistor Q4 to reach the turn-on voltage of the fourth transistor Q4 after a certain delay, so as to implement a slow start function. Illustratively, the slow start unit 220 may further include a resistor disposed between the control electrode and the first electrode of the fourth transistor Q4, and a resistor disposed between the first electrode and the second electrode of the fourth transistor Q4 as a protection circuit for the fourth transistor Q4. And, in the power control module 20, a protection device such as a filter capacitor and a transient suppression diode may be further provided at the front end of the power conversion unit receiving the power signal. For example, the power signal VDD transmitted to the power conversion unit through the soft start unit 220 may still be 48 vdc.

The type, channel type, and arrangement position of the fourth transistor Q4 listed above are not limiting to the present invention. The specific structure of the slow start unit 220 can be adjusted according to actual requirements.

With continued reference to fig. 3, in one embodiment, optionally the hierarchical control module 30 includes: a control unit 310 and an action unit 320. The control end f1 of the control unit 310 is used as the control end 31 of the hierarchical transmission control module 30 and is connected with the data processing module 40; the control unit 310 is configured to control the potential of the output terminal f2 of the control unit 310 according to the hierarchical control signal SJC. The connection end g2 of the action unit 320 is used as the level transmission connection end 32 of the level transmission control module 30, the action unit 320 is connected between the power supply pins of the two network interfaces 110, and the control end g1 of the action unit 320 is connected with the output end f2 of the control unit 310; the action unit 320 is used for switching on or off according to the potential of the output terminal f2 of the control unit 310. In this embodiment, the action unit 320 is used as a component of the hierarchical power supply path, and the control unit 310 controls the on-off of the action unit 320 according to the hierarchical control signal SJC to control the on-off of the hierarchical power supply path. The power pins of the network interface may include a power positive pin eth_vs and a power ground pin eth_gnd.

For example, when one of the network interfaces 110 is connected to the front-stage device 200, the power signal passes through the rectifying unit 120 to supply power to the internal hardware operating circuit of the power supply device, and after the power supply device is powered up, the main control device may instruct whether to supply power to the rear-stage device 300. After the data processing module 40 receives the configuration information of the master control device through the network, the electric potential of the hierarchical control signal SJC can be controlled, so that the electric potential of the output end of the control unit 310 is controlled, whether the action unit 320 is turned on is controlled, whether the power supply pins of the two network interfaces 110 are turned on is further controlled, and whether the next stage of power supply is realized is controlled.

Specifically, referring to fig. 5, the control unit includes: a first transistor Q1 and a first resistor R1; the first resistor R1 is connected between the control terminal f1 of the control unit 310 and the control electrode of the first transistor Q1, the first electrode of the first transistor Q1 is grounded, and the second electrode of the first transistor Q1 is connected to the output terminal f2 of the control unit 310.

As shown in fig. 5, the first transistor Q1 may be an NMOS transistor, or as shown in fig. 6, the first transistor Q1 may be a PNP transistor. When the level-shift control signal SJC is at a high level, the first transistor Q1 is controlled to be turned on, and the ground signal is transmitted to the output terminal f2 of the control unit 310. Referring to fig. 5, a protection resistor may be further exemplarily provided at the control terminal f1 of the control unit 310.

With continued reference to fig. 5, in one embodiment, optionally, the action unit 320 includes: the second transistor Q2, the third transistor Q3, the second resistor R2, the third resistor R3, the fourth resistor R4, the fifth resistor R5, the sixth resistor R6, and the seventh resistor R7.

The first end of the second resistor R2 and the first end of the third resistor R3 are electrically connected with the control end of the action unit 320 (i.e. the output end f2 of the control unit 310), the second end of the second resistor R2 is respectively connected with the first end of the fourth resistor R4 and the first end of the fifth resistor R5, the second end of the fourth resistor R4 is connected with the control electrode of the second transistor Q2, and the second end of the fifth resistor R5 is connected with the first electrode of the second transistor Q2; the second end of the third resistor R3 is respectively connected with the first end of the sixth resistor R6 and the first end of the seventh resistor R7, the second end of the sixth resistor R6 is connected with the control electrode of the third transistor Q3, the second end of the seventh resistor R7 is connected with the first electrode of the third transistor Q3, and the first electrode of the second transistor Q2 is connected with the first electrode of the third transistor Q3; the second pole of the second transistor Q2 and the second pole of the third transistor Q3 are respectively connected to the positive power supply pins eth_vs of the two network interfaces 110.

The second transistor Q2 and the third transistor Q3 are PMOS transistors, and the embodiment is equivalent to providing a common source anti-series PMOS structure connected between two power supply positive electrode pins eth_vs (respectively labeled as eth_vs_1 and eth_vs_2 for distinction) in the operation unit 320, and forming the operation unit 320 completely symmetrical in structure through the second resistor R2 to the seventh resistor R7, so as to meet the control requirement of not distinguishing the two power supply positive electrode pins eth_vs.

Specifically, taking the example that the positive power supply pin eth_vs_2 is connected to the power supply signal with positive voltage provided by the pre-stage device 200, the body diode of the third transistor Q3 is turned on at this time, and the positive voltage is transmitted to the first pole of the third transistor Q3 and the first pole of the second transistor Q2. When the subsequent device 300 needs to be controlled to be powered on, the hierarchical control signal SJC controls the first transistor Q1 to be turned on. The low voltage of the ground signal is transmitted to the control electrode of the second transistor Q2 and the control electrode of the third transistor Q3 through the first transistor Q1, so that the gate-source voltage difference of the two transistors is smaller than the threshold voltage of the two transistors, and the two transistors are turned on, so that the power supply positive electrode pin eth_vs_2 and the power supply positive electrode pin eth_vs_1 are communicated, and the backward device 300 can be powered. When the power of the rear-stage device 300 needs to be controlled, the level transmission control signal SJC controls the first transistor Q1 to be turned off, the second electrode potential of the first transistor Q1 is floating, the control electrode of the second transistor Q2 and the control electrode of the third transistor Q3 cannot obtain low voltage, so that both transistors are turned off, and the power supply positive electrode pin eth_vs_2 and the power supply positive electrode pin eth_vs_1 are not communicated, so that power supply to the rear-stage device 300 cannot be performed.

When the positive power supply pin eth_vs_1 is connected to the power signal with positive voltage provided by the pre-stage device 200, the control process is similar to the above process, and will not be repeated.

The above embodiment exemplarily shows that the action unit 320 is connected between the positive power supply pins eth_vs of the two network port modules 10, and shows a specific structure implemented based on two transistors, but is not limited to the present invention. In other embodiments, the action unit 320 may alternatively have other structures.

Referring to fig. 6, in another embodiment, optionally, the action unit 320 includes: a relay 321 including a Coil, a first switch K1, and a second switch K2; a first end of the Coil is connected to the first power supply signal VCC, and a second end of the Coil is connected to a control end of the action unit 320 (i.e., an output end f2 of the control unit 310); the first switch K1 is connected between two power supply positive pins eth_vs (respectively labeled eth_vs_1 and eth_vs_2 for distinction); the second switch K2 is connected between two power ground pins eth_gnd (labeled eth_gnd_1 and eth_gnd_2, respectively, for distinction).

In this embodiment, the relay 321 forms the action unit 320, so that the action reliability of the action unit 320 can be ensured. Specifically, the first power supply signal VCC may be a +5v power supply signal, which may be provided by the power supply control module 20, for example. When the level transmission control signal SJC controls the first transistor Q1 to be turned on, a ground signal is transmitted to the second end of the Coil through the first transistor Q1, so that the Coil is electrified, the first switch K1 and the second switch K2 are controlled to be turned on, and the two power supply positive electrode pins eth_vs and the two power supply ground pins eth_gnd are communicated, so that the power supply of the next stage power supply device 100 is realized. For example, when the Coil is not energized, the first switch K1 and the second switch K2 may both be connected to the floating pin.

Illustratively, a freewheeling diode D51 may also be connected in parallel across the Coil of the relay 321 as a discharge path for the Coil. The cascade control signal SJL may be provided by a GPIO port of the data processing module 40.

With continued reference to fig. 3, in one embodiment, optionally, the data processing module 40 includes: a data processing unit 410. Illustratively, the data processing unit 410 may include a System On Chip (SOC). The power supply terminal e1 of the data processing unit 410 may be used as one power supply terminal 41 (e.g., the second power supply terminal 41-2) of the data processing module 40, and may be connected to the second output terminal c3 of the power conversion unit 210. An output terminal (for example, a GPIO port) of the data processing unit 410 may be used as the hierarchical control output terminal 42 of the data processing module 40 for outputting the cascaded control signal SJL. The data interaction end e2 of the data processing unit 410 can be directly used as the data interaction end 43 of the data processing module 40 for data transmission with the front-stage and rear-stage devices.

Further, the data processing module 40 may further include a network switching chip 420 to implement expansion of the data interaction end of the data processing unit 410 and flexible data interaction modes. Illustratively, the power supply terminal d1 of the network switching chip 420 may be used as one power supply terminal 41 (e.g., the first power supply terminal 41-1) of the data processing module 40, and may be connected to the first output terminal c2 of the power conversion unit 210. The first data interaction end d2 of the network switch chip 420 may be used as the data interaction end 43 of the data processing module 40, and the data transmission ends of the two network port modules 10 are respectively connected with the two first data interaction ends of the network switch chip 420 correspondingly. The second data interaction end d3 of the network switching chip 420 may be connected to the data interaction end e2 of the data processing unit 410; an output terminal of the data processing unit 410 is connected to the control terminal 31 of the hierarchical control module 30. The data processing unit 410 is mainly used for processing functions of data collection, data encoding, algorithm and the like of the power supply device 100, and the network exchange chip 420 is mainly used for realizing data exchange between the power supply device 100 and the main control device.

In summary, in the power supply device 100 provided by the embodiment of the invention, the data processing module 40 can control the on-off state of the hierarchical control module 30, so as to control whether the power signal of the front-stage device 200 can be transmitted to the rear-stage device 300, so that the power-on or power-off of the rear-stage device 300 is controllable. In addition, in the power supply process, the source network port of the power supply signal is not required to be judged, the polarity of the access power supply is not required to be judged, and the main control device and each data processing module 40 can control the number of stages of the power supply device which is powered in the system only according to the limitation of the cascade number, so that the control logic is simple, and the implementation and the popularization are easy.

The embodiment of the invention also provides a power supply system, which comprises the power supply device provided by any embodiment of the invention and has corresponding beneficial effects. Fig. 7 is a schematic structural diagram of a power supply system according to an embodiment of the present invention. Referring to fig. 7, illustratively, the front-stage device of the first-stage power supply device 100 is the master device 400, the front-stage devices of the other-stage power supply devices 100 are the front-stage power supply devices 100, and the last-stage power supply device 100 may not be connected to the rear-stage device. And, a power adapter (not shown in the figure, for example, a direct current power adapter) may be connected between the power supply and the device provided with the master control apparatus 400. In the power supply system, the power supply of each stage of the power supply device 100 can be realized through the main control device 400.

By way of example, the Power supply system may be a POE (Power Over Ethernet ) system, and a complete POE system may include two parts, a Power sourcing equipment (PSE, power Sourcing Equipment) and a Powered Device (PD). The master control device 400 is configured in the power supply end equipment, the power supply device 100 is configured in the power receiving end equipment, the power receiving end equipment at each stage is cascaded through the power supply device 100, and one power supply device 100 is arranged in the power receiving end equipment at one stage.

The embodiment of the invention also provides a power supply method which is suitable for the power supply system provided by any embodiment of the invention and has corresponding beneficial effects. The power supply method can be executed by the main control device and the data processing module in each stage of power supply device in a matching way. The power supply method may include: the data processing modules in the main control device and the power supply devices at all levels control the hierarchical control modules in the power supply devices to be conducted step by step until the number of the power supply devices which are powered on reaches the upper limit of the cascade number of the power supply devices, and control the hierarchical control modules in the last power supply device which are powered on to be powered off.

In the power supply method provided by the embodiment of the invention, in each stage of power supply device, the on-off state of the corresponding stage transmission control module can be controlled through the data processing module, so that whether the power supply signal of the front stage device can be transmitted to the rear stage device is controlled, and whether the rear stage device is powered or not is controllable is controlled. Therefore, the main control device can provide corresponding quantity of supporting capacity of the power supply devices in different application scenes, redundant power supply devices are controlled to be incapable of being powered, at least part of the power supply devices cannot be powered on normally due to the fact that the power supply devices are excessively connected into the system and are powered on, and accordingly reliability of the power supply system is improved, and a power supply effect is guaranteed.

It should be noted that, in the specific embodiment of the power supply device, the specific method for generating the hierarchical control signal by the data processing modules and the specific data interaction mode between the main control device and each level of data processing module are described in detail, and the above matters can be applied to the power supply method.

The embodiment of the invention also provides audio acquisition equipment, which comprises the power supply device provided by any embodiment of the invention and has corresponding beneficial effects. Fig. 8 is a schematic structural diagram of an audio capturing device according to an embodiment of the present invention. Referring to fig. 8, illustratively, an audio collection apparatus 1000 may include a power supply device 100 and a sound pickup device 600, the sound pickup device 600 being used for collection of target sound, the power supply device 100 being used for supplying power to the sound pickup device 600, for example, by connecting the sound pickup device 600 through a power control module. The data processing module in the power supply device 100 may be used as a processor in the audio acquisition apparatus 1000, and may be used for controlling the power supply related process, and performing functions such as audio acquisition, audio data encoding, and algorithm.

Illustratively, one power supply 100 may be configured in one audio collection device 1000. The audio acquisition device 1000 may be provided in an audio acquisition system. Cascading between the audio collection devices 100 of each stage can be realized through respective power supply devices 100. In the audio collection system, the front-stage device of the present-stage audio collection device 1000 may be a recording and playing host (configured with a master control device) or the front-stage audio collection device 1000, and the rear-stage device may be the rear-stage audio collection device 1000. For example, the audio collection system includes a recording host and a plurality of audio collection devices 1000 connected in cascade, and then, for the first-stage audio collection device 1000, its former-stage device is the recording host, and its latter-stage device is the second-stage audio collection device 1000. For any other stage of the audio collection device 1000, the preceding stage device is the audio collection device 1000 of its preceding stage. The subsequent devices of any level of the audio capturing device 1000 other than the last level of the audio capturing device 1000 are the subsequent level of the audio capturing device 1000. The last stage audio acquisition device 1000 may not be connected to a subsequent stage device. By way of example, the audio acquisition device 1000 may be a microphone, such as a digital microphone.

In the audio acquisition device 1000 provided in this embodiment, the power supply device 100 is configured, and the on-off state of the corresponding hierarchical transmission control module can be controlled by the data processing module in the power supply device 100, so as to control whether the power signal of the front-stage device can be transmitted to the rear-stage device, so that whether the rear-stage device is powered on or not has controllability. Therefore, the recording and broadcasting host can provide the supporting capability of the corresponding number of the audio acquisition devices 1000 in different application scenes, control the redundant audio acquisition devices 1000 to be unable to be electrified, avoid the situation that at least part of the audio acquisition devices 1000 cannot be electrified normally due to the fact that the audio acquisition devices 1000 are excessively connected into the audio acquisition system and electrified, ensure the reliability of the audio acquisition system and ensure the pickup effect.

The embodiment of the invention also provides an audio acquisition system which comprises the audio acquisition equipment provided by any embodiment of the invention and has corresponding beneficial effects. Fig. 9 is a schematic structural diagram of an audio acquisition system according to an embodiment of the present invention. Referring to fig. 9, an audio acquisition system illustratively includes a recording host 2000 and at least two stages of audio acquisition devices 1000 connected in cascade. The recording and playing host 2000 includes a main control device 400, each audio acquisition device 1000 is configured with a power supply device 100, and the audio acquisition devices 1000 are cascaded through the power supply device 100. Wherein the main control device 400 and the power supply device 100 are used to perform a process of audio data in addition to performing a power supply control process shift. The front-stage device of the first-stage audio acquisition device 1000 is the recording and playing host 2000, the front-stage devices of other-stage audio acquisition devices 1000 are the front-stage audio acquisition devices 1000, and the last-stage audio acquisition device 1000 may not be connected with the rear-stage devices. And, a power adapter 500 (e.g., a dc power adapter) may be connected between the power supply and the recording and playing host 2000. The power supply to each level of audio acquisition equipment 1000 can be realized through the recording and playing host 2000 in the system. In the audio collection system, the pickup devices installed in the audio collection devices 1000 at different positions can be used for pickup, and the power supply device 100 in each audio collection device 1000 can transmit the audio data collected by the corresponding pickup device to the recording and broadcasting host 2000 through a network cable for collection, coding, transmission, recording and other processing.

Fig. 10 is a schematic structural diagram of another audio acquisition system according to an embodiment of the present invention. Referring to fig. 10, an exemplary audio collection device is a microphone, and in the recording scheme, a recording host is required to be applied together with the microphone to realize an audio information collection function, and the recording host is responsible for supplying power to the microphone and receives input audio data and corresponding configuration and control information through a network. Illustratively, there are two portals per microphone for cascading; the recording and broadcasting host is connected with the first-stage microphone through an RJ45 network port, and the microphones at all stages are also connected through an RJ45 network port; the recording and broadcasting host can supply power to the microphones of all levels through PSE (Power Sourcing Equipment) power supply equipment. For example, the audio collection system may be used to collect audio information in a teaching scene by using external digital microphones mounted at different locations on the top of a classroom.

The embodiment of the invention also provides a power supply method of the audio acquisition system, which is suitable for the audio acquisition system provided by any embodiment of the invention and has the corresponding beneficial effects. The power supply method can be cooperatively executed by a recording host (a main control device in the recording host) and a data processing module in each level of audio acquisition equipment (a power supply device in the audio acquisition equipment) by way of example. The power supply method may include: the master control device in the recording and broadcasting host and the data processing module in the power supply device of each level of audio acquisition equipment control the conduction of the cascade control module in the power supply device of the audio acquisition equipment step by step until the number of the audio acquisition equipment which is powered on reaches the upper limit of the cascade number of the audio acquisition equipment, and control the switching off of the cascade control module in the power supply device of the last level of the audio acquisition equipment which is powered on.

It will be appreciated that one power supply may be provided in each audio acquisition device, and that the upper limit of the number of cascades of audio acquisition devices is then virtually equal to the upper limit of the number of cascades of power supplies. It should be noted that, in the specific embodiment of the power supply device, the specific method for generating the hierarchical control signal by the data processing modules and the specific data interaction mode between the main control device and each level of data processing module are described in detail, and the above matters can be applied to the power supply method.

In the power supply method provided by the embodiment of the invention, in each stage of audio acquisition equipment, the on-off state of the corresponding hierarchical transmission control module can be controlled through the data processing module, so that whether the power supply signal of the front-stage equipment can be transmitted to the rear-stage equipment is controlled, and whether the rear-stage equipment is powered or not is controllable is controlled. Therefore, the recording and broadcasting host can provide corresponding number of audio acquisition equipment supporting capacities in different application scenes, control redundant audio acquisition equipment to be incapable of being electrified, and avoid the situation that the audio acquisition equipment is excessively connected into a system and electrified to cause the audio parameter configuration to be out of order, so that at least part of the audio acquisition equipment is invalid to influence the pickup effect. Therefore, the power supply method provided by the embodiment of the invention can improve the reliability of the audio acquisition system and ensure the pick-up effect.

The power supply method will be specifically described below. Fig. 11 is a schematic flow chart of a power supply method according to an embodiment of the present invention. Referring to fig. 11, the power supply method illustratively includes the steps of:

S110, the master control device in the recording and playing host forms configuration information according to the application requirement of the audio acquisition system, and acquires the upper limit of the cascade number of the audio acquisition equipment according to the configuration information.

The application requirements of the audio acquisition system can be provided to the recording and playing host computer by a user when the audio acquisition system is used, for example, the application environments where the audio acquisition system needs to be placed can be sent to the recording and playing host computer, for example, the application requirements can be included, the space size and the like, the recording and playing host computer forms configuration information based on a built-in algorithm according to the application requirements, the number, the installation position and the like of the most suitable audio acquisition devices under the requirements are determined, and relevant information of the upper limit of the cascading number of the audio acquisition devices is extracted from the configuration information. Or the recording and broadcasting host can also form and store configuration information before delivery, for example, the recording and broadcasting host is a recording and broadcasting host which is special for the scenes of fine teaching or large-scale conferences and the like, and the configuration information can be determined before delivery because the application is known and determined. The recording and playing host can directly transmit the upper limit value to each level of audio acquisition equipment after acquiring the upper limit of the cascade number of the audio acquisition equipment, so that the data processing module in each audio acquisition equipment stores the upper limit value.

For example, in the recording scheme collocation, different numbers of pickup microphones can be assembled according to the required pickup effect and space area, for example, 2 wheat or 4 wheat can be collocated in a normalized recording application scene, and the fine recording scheme can be collocated with 4 wheat, 6 wheat or even 8 wheat.

And S120, a main control device in the recording and broadcasting host and a data processing module in a power supply device of each stage of audio acquisition equipment gradually control a cascade control module in the power supply device of the audio acquisition equipment to be conducted until the number of the audio acquisition equipment which is powered on reaches the upper limit of the cascade number of the audio acquisition equipment, and control a cascade control module in a power supply binding device of the last stage of the audio acquisition equipment which is powered on to be turned off.

The comparison and judgment process related to the quantity can be executed by the main control device, and the main control device can directly provide the hierarchical transmission control instruction for each level of data processing modules after judgment, so that each level of data processing modules controls the on-off of the corresponding hierarchical transmission control module according to the corresponding hierarchical transmission control instruction.

Or the comparison and judgment process related to the quantity can be respectively carried out in each stage of data processing module. Specifically, referring to fig. 12, the power supply control process of each stage of audio acquisition device may be performed according to the following steps:

And S210, feeding back power obtaining information to a main control device in the recording and broadcasting host when the data processing module in the power supply device of the audio acquisition equipment obtains power.

S220, the main control device forms device number mark information for the audio acquisition device according to the power obtaining information.

For example, the master control device in the recording and playing host may correspondingly set the value of the device number flag according to the number of the received power-on information, for example, when 1 power-on information is received, the device number flag is recorded as 1. Or the power-on information can comprise address information and data information, so that the recording and broadcasting host can determine the value of the equipment number mark according to the address information.

S230, the main control device transmits the equipment number mark information and the upper limit of the cascading number of the audio acquisition equipment to the data processing module.

S240, the data processing module judges whether the number of the audio acquisition devices which are powered on reaches the upper limit of the cascade number of the audio acquisition devices; if yes, executing S250; if not, S260 is performed.

For example, the data processing module may update the device number flag (equivalent to the cascading number flag information of the power supply device in the system) according to the device number flag, and determine whether the value of the device number flag matches the cascading number upper limit of the audio capturing device, and if the value of the device number flag matches (e.g., is the same as) the value of the cascading number upper limit of the audio capturing device, it indicates that the number of the audio capturing devices that have been powered on in the system reaches the cascading number upper limit of the audio capturing device. Or the data processing module can directly judge whether the value of the device number mark is matched with the upper limit of the cascade number of the audio acquisition devices, and if the value is matched (for example, the same), the number of the audio acquisition devices which are already powered in the system reaches the upper limit of the cascade number of the audio acquisition devices.

S250, the data processing module controls the cascade control module to be turned off.

S260, the data processing module controls the cascade control module to be conducted.

The embodiment provides a specific power supply mode of the audio acquisition system through S110-S120.

On the basis of the above embodiments, optionally, when determining the upper limit of the cascade number of the audio collection device, the recording and playing host may also comprehensively consider the application requirement and the power of the power adapter connected to the recording and playing host, so as to avoid the abnormal operation of the system caused by the limitation of the power adapter.

Specifically, the step of determining, by the recording host, an upper limit of a number of cascades of the audio acquisition device may include:

A first upper number limit is determined based on the configuration information.

And determining a second upper quantity limit according to the power of the power adapter connected with the recording and playing host.

The smaller of the first upper number limit and the second upper number limit is taken as an upper number limit of the cascade of the audio acquisition devices.

The specific analysis is as follows: taking an audio collection device as a microphone as an example, the recording and playing host is powered by the direct-current power supply adapter, so that the power supply of the microphone is directly related to the power consumption provided by the adapter. However, the price difference of the adapters with different powers is larger, if the recording and playing host is only matched with 2 microphones, the high-power output power adapter can cause resource waste. So 2 and less microphones can apply power adapters with power of 80W and more than 2 microphones can apply power adapters with power of 96W and more, typically according to the collocation scheme of different numbers of microphone switching adapters. If the 80W adapter is used, more than 2 microphones are actually used, so that the system cannot work normally due to insufficient power of the power adapter, and/or the pickup effect is affected due to the fact that the number of actually accessed microphones is not matched with the processing capacity of a data processing algorithm in a main control device of the recording and playing host, so that the audio acquisition system cannot process data normally. Therefore, the smaller one of the first upper number limit and the second upper number limit is used as the upper number limit of the cascade connection of the audio acquisition devices, so that the problems can be effectively avoided, and the audio acquisition with both economy and reliability can be realized. And when the power adapter with 96W and above is used, the work of different collocation schemes of 4, 6 or 8 microphones can be supported, but if more than 8 microphones are powered on simultaneously, besides the problems, the problems can be effectively avoided by controlling the audio acquisition system to be powered on slowly because more microphones are powered on simultaneously to cause excessive transient starting current, so that partial equipment is burnt out due to overcurrent or overload protection of the power adapter is started, the system is powered off and the like.

The following specifically describes the power supply method by taking the upper limit of the cascade of the microphone devices as 2 as an example: when a dual/stereo Digital Microphone (DMIC) function interface of the recording and broadcasting host is connected to an external digital microphone, the recording and broadcasting host opens an external power supply function, the whole system is started after the first-stage microphone is powered on, and the later-stage microphone is in a state to be powered on.

After the first-level microphone is started, the recording and broadcasting host computer is informed that the first-level microphone is in a working state through the network, and the recording and broadcasting host computer sends first equipment number mark information to the first-level microphone according to microphone working information and informs the first-level microphone that the application requirement is a scheme of two microphones at the moment. After the first-stage microphone receives the corresponding information, the device number mark can be set to 1, then the potential of the cascade control signal is set through the GPIO port of the data processing module, and the RJ45 network port connected with the subsequent-stage device is opened for external power supply.

After the second-stage microphone is electrified and started, the network informs the recording and broadcasting host that a new-stage microphone works on the link. The recording and broadcasting host sends second equipment number mark information to the second-stage microphone according to the microphone work information, and informs the second-stage microphone that the application requirement is a scheme of two microphones at the moment. The second level microphone may set the number of microphones device flag to 2. After the second-stage microphone recognizes the access quantity information, the upper limit of the cascade of the equipment matched with the corresponding scheme is matched. When the upper limit of the cascade of the devices is identified as 2 and the number of the microphones connected on the link is 2, the power supply function of the next-stage pair is not opened.

Therefore, even if the second-stage microphone is connected to the third stage after the second-stage microphone is connected to the link, the third-stage microphone does not work at this time, and the effect of controlling the number of microphones connected to power supply is achieved.

For example, when the scheme is matched with the microphones with higher number of specifications, the matched high-power output power adapter can be used, and then according to the detection flow, the scheme of determining the upper limit of the cascade number based on the power of the power adapter is combined, so that the purpose of controlling the working number of the microphones is achieved.

It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.

The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. A power supply device, characterized by comprising: the system comprises a power supply control module, a hierarchical transmission control module, a data processing module and two network port modules;

The hierarchical transmission control module is connected between the two network port modules, and the control end of the hierarchical transmission control module is connected with the data processing module; the hierarchical transmission control module is used for controlling whether two network port modules are communicated or not according to the hierarchical transmission control signal so as to control whether the subsequent device is powered on or not;

The main control device generates a hierarchical control instruction according to the upper limit of the cascade number of the power supply devices and the number of the power supply devices which are powered on in the power supply system, and the data processing module outputs the hierarchical control signal according to the hierarchical control instruction;

2. The power supply apparatus according to claim 1, wherein the method of acquiring the number of power supply apparatuses that have been powered in the power supply system includes:

3. The power supply device of claim 1, wherein the portal module comprises: a network interface and a rectifying unit; the network port module is connected with the front-stage device or the rear-stage device through the network interface;

4. A power supply according to claim 3, wherein the hierarchical control module comprises:

5. The power supply device according to claim 4, wherein the control unit includes: a first transistor and a first resistor;

6. The power supply of claim 4, wherein the power pins of the network interface comprise a power positive pin and a power ground pin;

7. The power supply device of claim 1, wherein the power control module comprises: a slow start unit and a power supply conversion unit;

8. The power supply of claim 7, wherein the portal module comprises: a network interface and a rectifying unit; the network interface is used for connecting the front-stage device or the back-stage device; the network interface is connected with the input end of the rectifying unit;

9. The power supply device of claim 1, wherein the data processing module comprises: a data processing unit and a network switching chip;

10. A power supply system, comprising: at least two stages of power supply devices according to any one of claims 1-9, connected in cascade with the master control device;

11. A power supply method, characterized by being applied to the power supply system of claim 10; the power supply method comprises the following steps:

12. An audio acquisition device, comprising: the power supply device of any one of claims 1-9.

13. An audio acquisition system, comprising: the audio acquisition device of claim 12 of at least two stages of the recording and playing host and cascade connection;

14. A method of supplying power, characterized by being applied to the audio acquisition system of claim 13; the power supply method comprises the following steps:

15. The power supply method according to claim 14, wherein the power supply control process of any one of the audio collection devices includes:

16. The power supply method according to claim 14, further comprising, before the step-by-step control module in the power supply device of the audio collection apparatus is turned on:

17. The method of claim 16, wherein obtaining the upper limit of the number of cascades of the audio collection device based on configuration information comprises: