CN104618122A - Method for signal feedback and apparatus thereof, method for power supply and equipment thereof, and method for controlling and system thereof - Google Patents
Method for signal feedback and apparatus thereof, method for power supply and equipment thereof, and method for controlling and system thereof Download PDFInfo
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- CN104618122A CN104618122A CN201310539347.9A CN201310539347A CN104618122A CN 104618122 A CN104618122 A CN 104618122A CN 201310539347 A CN201310539347 A CN 201310539347A CN 104618122 A CN104618122 A CN 104618122A
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Abstract
The present invention provides a method for signal feedback and an apparatus thereof, a method for power supply and equipment thereof, and a method for controlling and a system thereof, and can solve the problem that power receiving equipment cannot work normally due to the undervoltage state. According to the present invention, an input voltage of the power receiving equipment is collected, and a corresponding signal is fed back to power supply equipment according to the collected input voltage. The power supply equipment adjusts an output voltage according to the received signal. Compared with the prior art, the input voltage at an end of the power receiving equipment can be transmitted to the power supply equipment, so that the power supply equipment can be informed about the working state of the power receiving equipment in time, thereby better adjusting the input voltage of the power receiving equipment. The problem in the prior art, i.e., aging of the network line or a long transmitting distance causes consumption of the voltage transmitted to the power receiving equipment by the power supply equipment, so that the power receiving equipment is unable to work normally, can be avoided, and thus the problem that the power receiving equipment cannot work normally due to the undervoltage state can be solved.
Description
Technical field
The present invention relates to for electrical domain, particularly relate to a kind of signal feedback method and device, method of supplying power to and equipment, control method and system.
Background technology
Along with the promulgation of IEEE802.3at (the high-power standard of IEEE-USA), Power over Ethernet (POE) technology moves to maturity increasingly, the network equipment with PSE (Power Supply Equipment power supply unit) function can be that the increasing terminal based on IP (the Internet) is (as IP telephone machine, wireless local network connecting point AP, web camera etc.) carry out supply of electric power while transmission of data signals, this also makes with PD (the Power Device of POE by Electricity Functional, power receiving equipment or powered module) product fast development gets up.
Current POE powers to draw money on credit most and holds 100m netting twine, because netting twine has impedance, the voltage causing PSE to send has very large pressure drop to during PD side, when especially aging at cable, netting twine RJ45 interface impedance is larger, causes PD side power consumption equipment under-voltage and cannot normally work.Block diagram as described in Figure 1, is that POE traditional in prior art powers block diagram, mainly contains PSE side and be connected by network line with PD side in whole electric power-feeding structure.Power supply chip is connected with supply module, main function is exactly for the power consumption equipment by electrical chip provides voltage, and PD side just receives the voltage of PSE side, PD side can not feed back to PSE side in time the operating state of this side power consumption equipment, can the power consumption equipment of the PD side PSE side that normally work can not be known in time, because transmission range is too far away or transmit the aging of netting twine, when the power consumption equipment of PD side can be caused to be in under-voltage.
So, how by Ethernet, the operating voltage of PD side power consumption equipment to be fed back to PSE side, PSE side can be allowed to know in time, and can the power consumption equipment of PD side normally work under the voltage provided, thus PSE output voltage is adjusted to desired value, make PD hold input voltage to be current urgent problem all the time within the scope of its normal working voltage.
Summary of the invention
The technical problem to be solved in the present invention is, provides a kind of signal feedback method and device, method of supplying power to and equipment, control method and system, can solve power receiving equipment power consumption equipment because of under-voltage problem that is that cannot normally work.
In order to solve the problem, the invention provides a kind of signal feedback method, comprising:
The input voltage of described power receiving equipment is gathered when power supply unit output voltage powers to described power receiving equipment;
The signal corresponding according to the input voltage feedback collected adjusts output voltage to described power supply unit for it.
In one embodiment of this invention, the step that corresponding according to the input voltage feedback collected signal comprises for its adjustment output voltage to described power supply unit:
Given by voltage value signal corresponding for the described input voltage collected described power supply unit for its adjustment output voltage;
Or
The input voltage collected and preset voltage are compared, the voltage difference signal therebetween obtained gives described power supply unit for its adjustment output voltage.
In one embodiment of this invention, the signal corresponding according to the input voltage feedback collected adjusts output voltage to described power supply unit for it, and the mode of the signal of wherein said feedback correspondence comprises: adjust output voltage for it to described power supply unit by the signal that netting twine feedback is corresponding.
In order to solve the problem, present invention also offers a kind of method of supplying power to, comprising:
Output voltage is powered to receiving end;
Its voltage exported is adjusted according to the signal of the correspondence fed back.
In one embodiment of this invention, the signal of the correspondence that described basis feeds back adjusts its voltage exported, wherein, described in the signal of correspondence that feeds back be the signal of the correspondence fed back by netting twine.
In order to solve the problem, present invention also offers a kind of signal feedback device, comprising: acquisition module and feedback module;
Described acquisition module is used for the input voltage gathering power receiving equipment when power supply unit output voltage is powered to described power receiving equipment;
Described feedback module is used for the signal corresponding according to the input voltage feedback collected and supplies its adjustment output voltage to power supply unit.
In one embodiment of this invention, described feedback module is used for the step that the signal corresponding according to the input voltage feedback collected comprises for its adjustment output voltage to power supply unit:
Voltage value signal corresponding for the described input voltage collected is adjusted output voltage to described power supply unit for it by described feedback module;
Or
The input voltage collected and preset voltage compare by described feedback module, and the voltage difference signal therebetween obtained gives described power supply unit for its adjustment output voltage.
In one embodiment of this invention, the signal that described feedback module is used for by netting twine feedback is corresponding adjusts output voltage to power supply unit for it.
In order to solve the problem, present invention also offers a kind of power supply unit, comprising: supply module, control module;
Described supply module is used for output voltage and powers to power receiving equipment;
Described control module is used for the voltage exported according to the signal adjustment supply module of the correspondence fed back.
In one embodiment of this invention, the voltage that described control module is exported according to the signal adjustment supply module of the described correspondence fed back by netting twine.
In order to solve the problem, present invention also offers a kind of power receiving equipment, comprise the device described in any embodiment of the present invention described above.
The invention has the beneficial effects as follows:
The invention provides a kind of signal feedback method and device, method of supplying power to and equipment, control method and system, can solve power receiving equipment because of under-voltage problem that is that cannot normally work.The present invention by gathering the input voltage of power receiving equipment, and feeds back corresponding signal to power supply unit according to the described input voltage collected.Power supply unit carries out the adjustment of output voltage according to the signal received, compared with prior art, the input voltage of power receiving equipment end can be transferred to power supply unit, make power supply unit can know the operating state of power receiving equipment in time, thus better adjust the input voltage of power receiving equipment, to avoid in prior art the loss power supply unit because the aging or transmission range of netting twine is too far away and be transferred to the voltage of power receiving equipment, the problem that power receiving equipment can not normally be worked, solve power receiving equipment because of under-voltage problem that is that cannot normally work.
Accompanying drawing explanation
Fig. 1 is that a kind of conventional P OE provided by the invention powers block diagram;
A kind of signal feedback method flow diagram of Fig. 2 for providing in the embodiment of the present invention one;
A kind of method of supplying power to flow chart of Fig. 3 for providing in the embodiment of the present invention two;
A kind of control method flow chart of Fig. 4 for providing in the embodiment of the present invention four;
A kind of signal feedback device block diagram of Fig. 5 for providing in the embodiment of the present invention five;
A kind of power supply unit block diagram of Fig. 6 for providing in the embodiment of the present invention six;
A kind of system block diagram that in POE system realize pressure regulation of Fig. 7 for providing in the present embodiment six.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly understand, hereinafter will be described in detail to embodiments of the invention by reference to the accompanying drawings.
The present invention has done corresponding improvement to power supply unit and power receiving equipment on the basis of traditional network cable transmission, make the input voltage of power receiving equipment can feed back to power supply unit for its adjustment output voltage with the form of respective signal, in one embodiment of this invention, preferably, respective signal is fed back to power supply unit by netting twine according to the input voltage collected by power receiving equipment, power supply unit carries out the adjustment of output voltage according to the feedback signal received, in one embodiment of this invention, the adjustment that described power supply unit carries out output voltage according to the signal received refers to that the signal received finally is converted to a kind of discernible pressure regulation signal by power supply unit, then power supply unit carries out the adjustment of output voltage according to the discernible pressure regulation signal of final conversion, utilize the method in the embodiment of the present invention, to avoid in prior art the loss power supply unit because the aging or transmission range of netting twine is too far away and be transferred to the voltage of power receiving equipment, make power receiving equipment can not normal work problem, solve power receiving equipment because of under-voltage problem that is that cannot normally work.
Embodiment one:
As described in Figure 2, be a kind of signal feedback method that the present embodiment provides, the method comprises:
Step 201: the input voltage gathering described power receiving equipment when power supply unit output voltage powers to described power receiving equipment;
Step 202: the signal corresponding according to the input voltage feedback collected adjusts output voltage to described power supply unit for it.
In the step 201 of the present embodiment, power supply unit is detecting power receiving equipment, after the sequence of operations such as classification, determine that this power receiving equipment can carry out intercommunication with power supply unit, after also determining the power consumption needed for power receiving equipment simultaneously, power supply unit provides output voltage to power to power receiving equipment, and this output voltage that power supply unit provides is as long as no ensureing when loss that power receiving equipment normally works.Gather the input voltage of described power receiving equipment, described collection can be power receiving equipment self collection also can be the collection being carried out power receiving equipment input voltage by third party, preferred power receiving equipment self Gather and input voltage in the present embodiment, described input voltage is identical with the output voltage of power supply unit when not having voltage transmission loss, when there being voltage loss, the output voltage that described input voltage equals power supply unit deducts loss voltage, in the present embodiment, described loss voltage is the voltage of circuit transmission loss.
In step 202, according to the input voltage feedback respective signal collected to described power supply unit, in the present embodiment, described respective signal is fed back to power supply unit according to the input voltage collected by netting twine by power receiving equipment, and described netting twine comprises Ethernet netting twine.
The signal of the described correspondence of power receiving equipment feedback preferably includes following one of two things in the present embodiment:
Directly voltage value signal corresponding for the input voltage collected is fed back to described power supply unit carries out output voltage adjustment for it;
The input voltage collected and preset voltage are compared, carry out the adjustment of output voltage for it to described power supply unit voltage difference signal feedback therebetween, wherein, in the present embodiment, particularly, voltage difference signal to power supply unit feedback power receiving equipment is after receiving the input voltage that power supply unit sends over, the voltage that this input voltage and this side power consumption equipment are preset is compared, the described voltage preset is the virtual voltage of the required normal work of power receiving equipment, the described operation this input voltage and the voltage preset compared can be that power receiving equipment self compares, also can be compared by third party.In the present embodiment, preferably power receiving equipment self accepts input voltage and compares operation, concrete comparison procedure is: the input voltage collected first is converted to a value determined by power receiving equipment, then compare with the magnitude of voltage that this value determined and power receiving equipment are preset, when input voltage value is greater than its default magnitude of voltage, described voltage difference signal comprises a positive voltage difference signal, when input voltage value is less than its default magnitude of voltage, described voltage difference signal comprises a negative voltage difference signal, when input voltage value equals its default magnitude of voltage, described voltage difference signal comprises zero-voltage difference value signal, described voltage difference signal can have various ways, as long as relation between the voltage of power receiving equipment and the voltage of actual needs can be indicated.
Input voltage is first converted to the value determined described in the present embodiment by being more not necessarily limited in of input voltage, can be by the input voltage collected be digital signal or analog signal time directly compare with the magnitude of voltage preset, also can be first the magnitude of voltage that power supply unit is preset is converted to digital signal or analog signal, and then be that digital signal or analog signal compare with the input voltage collected can also be that input voltage value with collecting is made comparisons.
In the present embodiment; described discernible pressure regulation signal differs the voltage difference signal be decided to be relatively; also can be the signal that any one is possible, if can identify by corresponding equipment the adjustment then carrying out output voltage all belong to the present embodiment protection scope.
In the present embodiment, described voltage value signal or voltage difference signal are transferred to power supply unit by Ethernet.
The signal that power receiving equipment feeds back to power supply unit comprises voltage value signal or voltage difference signal; but the signal of this feedback not only can be confined to these two kinds of voltage signals in the present embodiment; also can be other signal messages that power receiving equipment gathers; the voltage of such as, on the impedance of transmission line or transmission line loss; every be transferred to power supply unit after; can be calculated or conversion by corresponding, make the signal of the laggard line output voltage adjustment of power supply unit identification all belong to the scope of the present embodiment protection.
Utilize the signal feedback method in the present embodiment, can fast the input voltage of power receiving equipment be gathered, then by certain mode, the signal feedback of its correspondence is carried out the adjustment of output voltage to power supply unit for it.
Embodiment two:
As described in Figure 3, be a kind of method of supplying power to that the present embodiment provides, the method comprises:
Step 301: output voltage is powered to power receiving equipment
Step 302: according to the signal of the correspondence fed back;
Step 303: adjust the voltage that it exports.
In step 301, power supply unit output voltage is to power receiving equipment, and power receiving equipment gathers the input voltage that described power supply unit provides, and then it is fed back to power supply unit with the form of corresponding voltage signal;
In step 302, the signal of the described correspondence fed back can be that power supply unit self receives, also can be that third party receives, in the present embodiment, preferred described signal is received by power supply unit self, in above-mentioned steps 302, the signal that power supply unit receives comprises at least one in voltage value signal and voltage difference signal, simultaneously, the signal that power supply unit receives not only is confined to the voltage value signal described in the present embodiment or voltage difference signal, it can also be the signal that other some finally can carry out Voltage Cortrol, it can be such as the magnitude of voltage of loss on transmission line, also can be the impedance etc. on transmission line.
In step 303, the output voltage of adjustment power supply unit, described adjustment can be the adjustment that power supply unit self carries out output voltage, also can be that power supply unit carries out the adjustment of output voltage by third party, in the present embodiment, self Received signal strength of preferred power supply unit and further adjustment is done to output voltage.Preferably, the signal received can process by power supply unit further, is then converted to the adjustment that discernible pressure regulation signal carries out output voltage values.
In the present embodiment, power supply unit according to the signal received carry out the adjustment of output voltage values concrete comprise following two kinds of situations:
Situation in first:
When the signal received is digital signal, and this digital signal is when being voltage value signal, the voltage value signal received first is carried out digital-to-analogue conversion by power supply unit, namely the digital signal that power receiving equipment is come by network cable transmission is converted to analog signal, and then this analog signal is converted to a kind of discernible pressure regulation signal.
Specifically being converted to of described discernible pressure regulation signal: in the present embodiment, preferably the voltage value signal received is converted to one determines magnitude of voltage, then compare with the magnitude of voltage that the power receiving equipment recorded in this determined value and power supply unit is preset, after draw a voltage difference signal, preferably, when magnitude of voltage is greater than its default magnitude of voltage, described voltage difference signal comprises a positive voltage difference signal, when magnitude of voltage is less than its default magnitude of voltage, described voltage difference signal comprises a negative voltage difference signal, when magnitude of voltage equals its default magnitude of voltage, described voltage difference signal comprises zero-voltage difference value signal, after comparing end, described voltage difference signal is converted into a kind of discernible pressure regulation signal.Described voltage difference signal can have various ways, as long as can indicate relation between the voltage of power receiving equipment and the voltage of actual needs.
Voltage value signal is first converted to the value determined described in the present embodiment by being more not necessarily limited in of voltage value signal, also can be by the voltage value signal received be digital signal or analog signal time directly compare with the magnitude of voltage preset, also can be first default magnitude of voltage is converted to digital signal or analog signal, and then be that digital signal or analog signal compare with the voltage value signal received.
The second situation:
When the signal received is digital signal, and described digital signal is when being voltage difference signal, the digital signal received is carried out digital-to-analogue conversion by power supply unit, namely the digital signal that power receiving equipment is come by network cable transmission is converted to analog signal, and then this analog signal is converted to a kind of discernible pressure regulation signal.
In the present embodiment, no matter the signal that power supply unit receives is voltage value signal or voltage difference signal, finally carry out being converted to a kind of discernible pressure regulation signal, described discernible pressure regulation signal is a kind of voltage difference signal, power supply unit is after identifying the information representated by this voltage difference signal, the adjustment of output voltage is carried out according to the information of voltage difference, such as, be a positive voltage difference signal when power supply unit recognizes this voltage difference signal, then represent that the magnitude of voltage of power receiving equipment input is greater than its magnitude of voltage preset, so, need to turn down output voltage, be a negative voltage difference signal when power supply unit recognizes this voltage difference signal, then represent that the magnitude of voltage of power receiving equipment input is less than its magnitude of voltage preset, so, need to heighten output voltage, be a zero-voltage difference value signal when power supply unit recognizes this voltage difference signal, then represent that the magnitude of voltage of power receiving equipment input equals its magnitude of voltage preset, so, do not need to adjust to output voltage.
In the present embodiment, the signal that power supply unit receives differs and is decided to be digital signal, can be the other forms of signal transmitted by other means, and such as analog signal, as long as can pass through network cable transmission.
In the present embodiment; described discernible pressure regulation signal differs the voltage difference signal be decided to be relatively; also can be the signal that any one is possible, identified as long as can be powered the corresponding equipment of equipment, the adjustment then carrying out output voltage all belongs to the scope of the present embodiment protection.
Adopt method of supplying power in the present embodiment, the operating state learning the power consumption equipment of power receiving equipment that power supply unit is more quick and easy can be made, thus adjust output voltage timely, for power receiving equipment provides the voltage of normal work.
Embodiment three:
The present embodiment additionally provides another method of supplying power to, and the method is in particular:
In the present embodiment, preferred power supply unit self receives the signal that power receiving equipment is fed back by netting twine, when the signal that power supply unit receives is digital signal and this digital signal is voltage value signal, the digital signal received directly is converted to discernible pressure regulation signal by power supply unit, does not need to carry out digital-to-analogue conversion.
When the signal that power supply unit receives is digital signal and this digital signal is voltage difference signal, the digital signal received directly is converted to discernible pressure regulation signal by power supply unit.
In the present embodiment, after the signal received being converted to discernible pressure regulation signal, the supply module in feeder ear carries out providing of concrete output voltage according to the content of pressure regulation signal, and concrete supply power voltage control method is identical with above-described embodiment two.
In the present embodiment; described discernible pressure regulation signal differs the voltage difference signal be decided to be relatively; also can be the signal that any one is possible, if can identify by corresponding equipment the adjustment then carrying out output voltage all belong to the present embodiment protection scope.
Adopt this method of supplying power in the present embodiment; do not need the conversion signal received being carried out digital-to-analogue or modulus; but be directly converted to a kind of discernible pressure regulation signal; power supply unit can be made to learn the operating state of power receiving equipment more efficiently; thus adjust output voltage timely, for power receiving equipment provides the voltage of normal work.
Embodiment four:
As described in Figure 4, be a kind of control method that the present embodiment provides, the method comprises:
Step 401: power supply unit output voltage powers to described power receiving equipment;
Step 402: the input voltage gathering described power receiving equipment;
Step 403: feed back corresponding signal to described power supply unit according to the input voltage collected;
Step 404: described power supply unit adjusts described output voltage according to the signal received.
Step 401 adopts the signal feedback method described in embodiment one to step 403, and step 404 adopts the method for supplying power to described in embodiment two or three;
In the control method that the present embodiment provides, step 401 mainly obtains the load characteristic of cicada power receiving equipment at power supply unit after, provide the voltage of normal work to power receiving equipment, when power supply unit output voltage is powered to power receiving equipment, enter step 402, gather the input voltage of described power receiving equipment, also be namely exactly the entrance potential of power receiving equipment, the collection of input voltage can be power receiving equipment self collection, also can be that third party gathers described input voltage, and then be transferred to described power receiving equipment, in the present embodiment, preferred power receiving equipment self gathers the input voltage of local terminal, after power receiving equipment collects described input voltage, enter step 403, corresponding signal is fed back to described power supply unit according to the input voltage collected, the voltage collected is fed back corresponding signal to power supply unit by netting twine by power receiving equipment, described netting twine comprises Ethernet netting twine in the present embodiment, such as netting twine RJ45, certainly can also be the netting twine that other can realize transmitting, in step 403, after power receiving equipment collects described input voltage, directly the voltage value signal of described input voltage can be sent to power supply unit, also certain process can be done in power receiving equipment, then the signal after process is sent to power supply unit, described process can be that the voltage preset of the input voltage received and power receiving equipment power consumption equipment is compared the voltage difference signal drawn, also can be carry out certain comparison process at power receiving equipment, draw the voltage value signal of line loss, then by the signal feedback after described process to power supply unit.The signal of power receiving equipment feedback correspondence is to after described power supply unit, enter step 404, signal-powered equipment according to receiving adjusts described output voltage, in step 404, receive power receiving equipment and feed back the form that the signal of coming can be digital signal, also can be the form of analog signal, certain process is done to the feedback signal received, the supply module that can be powered in equipment identified, thus makes supply module carry out according to this signal received the adjustment of pressing of transmitting electricity.The described feedback signal to receiving does certain process, in the present embodiment, preferably the signal received is converted to discernible pressure regulation signal, and the supply module that described discernible pressure regulation signal can be powered equipment identified.In the present embodiment, preferably, the feedback signal received first is carried out simulated by power supply unit, is namely converted into analog signal, and then analog signal is converted to discernible pressure regulation signal.Can also be the conversion not carrying out analog signal, directly the feedback signal received be carried out certain process and be converted to discernible pressure regulation signal.
Adopt the method for controlling power supply in the present embodiment, make the supply module in power supply unit can adjust output voltage timely, thus ensure that the power consumption equipment of power receiving equipment normally works.
Embodiment five:
As described in Figure 5, be a kind of signal feedback device that the present embodiment provides, described device comprises: acquisition module and feedback module;
Described acquisition module is used for the input voltage gathering power receiving equipment when power supply unit output voltage is powered to described power receiving equipment;
Described feedback module is used for the signal corresponding according to the input voltage feedback collected and supplies its adjustment output voltage to power supply unit.
Preferably, described feedback module is used for the step that the signal corresponding according to the input voltage feedback collected comprises for its adjustment output voltage to power supply unit:
Voltage value signal corresponding for the described input voltage collected is adjusted output voltage to described power supply unit for it by described feedback module;
Or
The input voltage collected and preset voltage compare by described feedback module, and the voltage difference signal therebetween obtained gives described power supply unit for its adjustment output voltage.
Preferably, the signal that described feedback module is used for by netting twine feedback is corresponding adjusts output voltage to power supply unit for it.
Preferably, in the present embodiment, described acquisition module comprises a kind of voltage collector, for the entrance potential of Real-time Collection PD side; Described feedback module comprises a kind of feedback controller, is fed back by netting twine for the signal realized collecting.
It should be noted that, in the present embodiment, realize the operation of signals collecting and feedback, be not necessarily limited in the entity module described in the present embodiment, can also be the function being realized device described in the present embodiment by corresponding software.
Embodiment six:
As described in Figure 6, be a kind of power supply unit that the present embodiment provides, described equipment comprises: supply module and control module;
Described supply module is used for output voltage and powers to power receiving equipment;
Described control module is used for the voltage exported according to the signal adjustment supply module of the correspondence fed back.
Preferably, the voltage that described control module is exported according to the signal adjustment supply module of the correspondence described in being fed back by netting twine.
The present embodiment additionally provides a kind of power receiving equipment, comprises the device as described in embodiment five.
Preferably, in the present embodiment, described supply module comprises a kind of power supply chip; Described control module comprises a kind of controller, and namely described supply module and described control module are all a kind of entity module.
It should be noted that, in the present embodiment, realize the supply of voltage and the operation of control, be not necessarily limited in the entity module described in the present embodiment, can also be the function being realized equipment described in the present embodiment by corresponding software.
In order to be described the present embodiment further, in POE system, preferably realize the method for pressure regulation,
In the present embodiment, preferably, described power supply unit side is PSE side; Described power receiving equipment side is PD side;
A kind of system block diagram that in POE system realize pressure-adjustable of Fig. 7 for providing in the present embodiment, comprise power supply unit PSE side and powered device PD side within the system, wherein, power supply unit comprises supply module, power supply chip (PSE chip), signal receiving module, D/A converter module and regulating circuit module; Power receiving equipment comprises acquisition module, analog-to-digital conversion module, sending module and is subject to electrical chip (PD chip).
The method of specific implementation pressure-adjustable is:
The first step: supply module powers on, PSE chip powers on, and starts the classification detecting PD side apparatus;
Second step: after classification, PSE opens switch in side, is powered to PD side apparatus by netting twine;
3rd step: PD side apparatus buffer starting completes, and load is started working, and netting twine has electric current flow through;
4th step: PD side apparatus gathers PD side entrance voltage, the entrance potential collected is converted to the digital signal transmitted by Ethernet by analog-to-digital conversion module, this digital signal is returned to PSE side by netting twine by signal transmitting module;
5th step: the signal receiving module of PSE side receives the signal that Ethernet feedback transmission is returned, and it is converted to discernible signal by D/A converter module;
6th step: regulating circuit module processes above-mentioned discernible signal further, is converted to the discernible pressure regulation signal of supply module;
7th step: supply module is heightened output voltage according to the signal fed back to, turn down or remained unchanged.
In above-mentioned steps four, the acquisition module of described PD side gathers entrance potential and is converted to digital signal by analog-to-digital conversion module to the signal collected, and then signal transmitting module feeds back to PSE side to the digital signal after conversion by netting twine.Wherein, described acquisition module comprises a kind of voltage acquisition chip; Described D/A converter module comprises a kind of digital to analog converter; Described signal transmitting module comprises a kind of signal and sends chip;
In above-mentioned steps five, the signal receiving module of PSE side receives the signal that Ethernet feedback transmission is returned, and it is converted to discernible signal by D/A converter module; Wherein, described signal receiving module comprises a kind of signal receiving chip of a signal; Described D/A converter module comprises a kind of digital to analog converter;
In above-mentioned steps six, regulating circuit module processes above-mentioned discernible signal further, is converted to the discernible pressure regulation signal of supply module, described pressure regulation signal can identify by PES side supply module, wherein, described regulating circuit module comprises a kind of voltage regulator;
In step 7, supply module is heightened output voltage according to discernible pressure regulation signal, turn down or is remained unchanged.
In the present embodiment, the execution of preferred said method step realized by corresponding entity module; but; be not limited to the preferred entity module of institute in the present embodiment; also above-mentioned method can be realized by corresponding software program etc.; as long as the method in the present embodiment can be utilized, the category all belonging to the present embodiment protection produced a desired effect.
Adopt the method in the present embodiment, supply module output voltage can be regulated in real time, avoid PD side apparatus because netting twine on pressure drop excessive cause under-voltage, especially longer for service time in supply line, netting twine and terminal is aging has remarkable effect when causing impedance to increase, improves the applicable scope that POE powers.
Above content is in conjunction with concrete execution mode further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (11)
1. a signal feedback method, is characterized in that, comprising:
The input voltage of described power receiving equipment is gathered when power supply unit output voltage powers to described power receiving equipment;
The signal corresponding according to the input voltage feedback collected adjusts output voltage to described power supply unit for it.
2. signal feedback method as claimed in claim 1, is characterized in that,
The step that the signal corresponding according to the input voltage feedback collected comprises for its adjustment output voltage to described power supply unit:
Given by voltage value signal corresponding for the described input voltage collected described power supply unit for its adjustment output voltage;
Or
The input voltage collected and preset voltage are compared, the voltage difference signal therebetween obtained gives described power supply unit for its adjustment output voltage.
3. signal feedback method as claimed in claim 1 or 2, it is characterized in that, the signal corresponding according to the input voltage feedback collected adjusts output voltage to described power supply unit for it, and the mode of the signal of wherein said feedback correspondence comprises: adjust output voltage for it to described power supply unit by the signal that netting twine feedback is corresponding.
4. a method of supplying power to, is characterized in that, comprising:
Output voltage is powered to receiving end;
Its voltage exported is adjusted according to the signal of the correspondence fed back.
5. method as claimed in claim 4, is characterized in that, the signal of the correspondence that described basis feeds back adjusts its voltage exported, wherein, described in the signal of correspondence that feeds back be the signal of the correspondence fed back by netting twine.
6. a signal feedback device, is characterized in that, comprising: acquisition module and feedback module;
Described acquisition module is used for the input voltage gathering power receiving equipment when power supply unit output voltage is powered to described power receiving equipment;
Described feedback module is used for the signal corresponding according to the input voltage feedback collected and supplies its adjustment output voltage to power supply unit.
7. signal feedback device as claimed in claim 6, is characterized in that, described feedback module is used for the step that the signal corresponding according to the input voltage feedback collected comprises for its adjustment output voltage to power supply unit:
Voltage value signal corresponding for the described input voltage collected is adjusted output voltage to described power supply unit for it by described feedback module;
Or
The input voltage collected and preset voltage compare by described feedback module, and the voltage difference signal therebetween obtained gives described power supply unit for its adjustment output voltage.
8. signal feedback device as claimed in claims 6 or 7, is characterized in that, described feedback module to be used for by signal corresponding to netting twine feedback to power supply unit for its adjustment output voltage.
9. a power supply unit, is characterized in that, comprising: supply module and control module;
Described supply module is used for output voltage and powers to power receiving equipment;
Described control module is used for the voltage exported according to the signal adjustment supply module of the correspondence fed back.
10. equipment as claimed in claim 9, is characterized in that, the voltage that described control module is exported according to the signal adjustment supply module of the described correspondence fed back by netting twine.
11. 1 kinds of power receiving equipments, is characterized in that, comprising: the device as described in any one of claim 5-7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310539347.9A CN104618122A (en) | 2013-11-04 | 2013-11-04 | Method for signal feedback and apparatus thereof, method for power supply and equipment thereof, and method for controlling and system thereof |
| PCT/CN2014/079796 WO2014180442A1 (en) | 2013-11-04 | 2014-06-12 | Method for signal feedback and apparatus thereof, method for power supply and equipment thereof, and method for controlling and system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310539347.9A CN104618122A (en) | 2013-11-04 | 2013-11-04 | Method for signal feedback and apparatus thereof, method for power supply and equipment thereof, and method for controlling and system thereof |
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| CN104618122A true CN104618122A (en) | 2015-05-13 |
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| Country | Link |
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| CN (1) | CN104618122A (en) |
| WO (1) | WO2014180442A1 (en) |
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| CN106130742A (en) * | 2016-08-30 | 2016-11-16 | 杭州华三通信技术有限公司 | Equipment method of supplying power to based on POE system and device |
| CN106301801A (en) * | 2016-08-23 | 2017-01-04 | 锐捷网络股份有限公司 | A kind of power supply unit, electric power system and the method adjusting output power |
| CN106487523A (en) * | 2016-09-08 | 2017-03-08 | 上海斐讯数据通信技术有限公司 | A kind of voltage feedback method of network power supply and Voltage Feedback system |
| CN107565798A (en) * | 2016-06-30 | 2018-01-09 | 瑞昱半导体股份有限公司 | Electronic installation and input voltage compensation method |
| CN108808685A (en) * | 2018-03-26 | 2018-11-13 | 北京航天发射技术研究所 | A kind of digital compensation system of supply voltage and method |
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