WO2015100659A1 - 一种话机上承载电压的调节方法、装置及系统 - Google Patents

一种话机上承载电压的调节方法、装置及系统 Download PDF

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Publication number
WO2015100659A1
WO2015100659A1 PCT/CN2013/091208 CN2013091208W WO2015100659A1 WO 2015100659 A1 WO2015100659 A1 WO 2015100659A1 CN 2013091208 W CN2013091208 W CN 2013091208W WO 2015100659 A1 WO2015100659 A1 WO 2015100659A1
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Prior art keywords
voltage
power supply
phone
telephone
state
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Application number
PCT/CN2013/091208
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English (en)
French (fr)
Inventor
曾华荣
刘炳森
魏奇文
Original Assignee
华为终端有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为终端有限公司 filed Critical 华为终端有限公司
Priority to EP13900816.3A priority Critical patent/EP3076649B1/en
Priority to CN201380052602.5A priority patent/CN104718739B/zh
Priority to PCT/CN2013/091208 priority patent/WO2015100659A1/zh
Publication of WO2015100659A1 publication Critical patent/WO2015100659A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M19/00Current supply arrangements for telephone systems

Definitions

  • the present invention relates to the field of communications, and in particular, to a method, device and system for adjusting a load voltage on a telephone. Background technique
  • POTS Traditional Telephone Service
  • POTS a standard analog telephone service
  • the telephone switching system can provide power for multi-channel telephones.
  • the traditional voice line power supply system is generally separated, that is, each telephone uses a separate power supply system for power supply.
  • the telephone 16 and the telephone 17 are two independent power supplies, and the power supply 11 passes.
  • the SLIC chip provides the phone 16 with the power required for operation.
  • the power supply 12 provides the phone 17 with the power required for operation through the SLIC.
  • the two phones are connected to the SLIC chip through the Tip/Ring line.
  • the embodiment of the invention provides a method, a device and a system for adjusting a load voltage on a telephone.
  • the maximum voltage required for the power output of the telephone can be indicated by monitoring the working state of each telephone, and only one power supply pair is used.
  • the power supply function of the phone greatly reduces the amount of power supply and reduces the cost.
  • a first aspect of the embodiments of the present invention provides a method for adjusting a load voltage on a telephone.
  • the N telephone is connected to a power supply through an adjustment device, and the method includes:
  • the adjusting device detects an operating state of each phone in the N-way phone, where N is an integer greater than 1; the adjusting device determines a required voltage corresponding to the working state of each phone according to a preset mapping relationship;
  • the adjusting device uses a maximum voltage value among the N required voltages as a target voltage, and indicates - the power supply regulates an output voltage to the target voltage;
  • the adjusting device adjusts the load voltage on each telephone to a required voltage corresponding to its working state according to the target voltage.
  • the working state of the phone includes: an off-hook state, an on-hook state, or a ringing state.
  • the power supply is a switching power supply
  • the step of indicating that the power supply adjusts an output voltage to the target voltage includes :
  • the adjusting means sends a pulse width modulated PWM signal to the power supply to cause the power supply to adjust the output voltage to the target voltage according to the PWM signal.
  • the adjusting device adjusts the load voltage on each telephone to work with the phone according to the target voltage.
  • the steps of the required voltage corresponding to the state include:
  • the adjusting device If it is detected that the phone in the off-hook state performs dialing, the adjusting device inputs a first voltage signal to the Tip line of the off-hook phone, and inputs the first line to the Ring line of the off-hook phone. And a second voltage signal; wherein the first voltage signal and the second voltage signal have opposite phases and the amplitudes are equal.
  • the method further includes:
  • the adjusting device detects a temperature inside itself
  • the adjustment device adjusts the load voltage of each telephone to zero.
  • a second aspect of the present invention provides a device for adjusting a voltage on a phone, comprising: a detecting module, configured to detect an operating state of each phone in the N-channel phone, where N is an integer greater than 1: the query module is configured to Setting a mapping relationship to determine a required voltage corresponding to the working state of each of the telephones;
  • an indicating module configured to use a maximum voltage value among the N required voltages as a target voltage, and indicate that the power supply adjusts the output voltage to the target voltage;
  • the working state of the phone includes: off-hook state, on-hook state, off-hook state, or ringing state.
  • the power supply is a switching power supply
  • the indication module is configured to send a pulse width modulation PWM signal to the power supply
  • the power supply is caused to adjust an output voltage to the target voltage according to the PWM signal.
  • the adjusting module is configured to: when detecting that the phone in the off-hook state performs dialing, Entering a first voltage signal on a Tip line of the off-hook phone, and inputting a second voltage signal to the Ring line of the off-hook phone; wherein, the first voltage signal and the second voltage signal The phases are opposite and the amplitudes are equal.
  • the method further includes:
  • the over temperature protection module is used to detect the temperature inside itself; if the temperature exceeds the preset temperature threshold, the carrying voltage of each phone is adjusted to zero.
  • a third aspect of the present invention provides an apparatus for adjusting a voltage on a telephone, including:
  • the method includes at least one processor and at least one memory, wherein the memory stores a set of program code, and the processor calls the program code stored in the memory to perform the following operations:
  • N is an integer greater than 1.
  • the load voltage on each telephone is adjusted to a required voltage corresponding to its operating state according to the target voltage.
  • the working state of the phone includes: an off-hook state, an on-hook state, or a ringing state.
  • the power supply is a switching power supply
  • the processor performs the indication that the power supply adjusts an output voltage to the
  • the steps of the target voltage include:
  • the processor sends a pulse width modulated PWM signal to the power supply to enable the power supply - -
  • the power supply adjusts the output voltage to the target voltage according to the PWM signal.
  • the processor performs, according to the target voltage, adjusting a load voltage on each telephone to be
  • the steps of the required voltage corresponding to the working state of the phone include:
  • the processor If it is detected that the phone in the off-hook state performs dialing, the processor inputs a first voltage signal to the Tip line of the off-hook phone, and inputs the first line to the Ring line of the off-hook phone. And a second voltage signal; wherein the first voltage signal and the second voltage signal have opposite phases and the amplitudes are equal.
  • the processor is further configured to:
  • the carrier voltage of each telephone is adjusted to zero.
  • a fourth aspect of the present invention provides a POTS communication system comprising at least one telephone and any of the above-described adjustment devices, wherein the telephone is connected to a power supply via the adjustment device.
  • FIG. 1 is a schematic structural view of a telephone power supply circuit of the prior art
  • FIG. 2 is a schematic flow chart of a method for adjusting a load voltage on a telephone according to an embodiment of the present invention
  • FIG. 3 is another schematic flowchart of a method for adjusting a load voltage on a telephone according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of an apparatus for adjusting a voltage carrying on a telephone according to an embodiment of the present invention
  • FIG. 5 is another schematic structural diagram of an apparatus for adjusting a voltage carrying on a telephone according to an embodiment of the present invention. - - Figure;
  • FIG. 6 is another schematic structural diagram of an apparatus for adjusting a voltage carrying on a telephone according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a POTS communication system according to an embodiment of the present invention. detailed description
  • FIG. 1 is a schematic flowchart of a method for adjusting a load voltage on a telephone according to an embodiment of the present invention; in this embodiment, the method includes the following steps:
  • the adjusting device detects the working state of each telephone in the N telephone, and N is an integer greater than 1.
  • the power supply is connected to the N telephone through the adjusting device, and N is an integer greater than 1.
  • the working state of the mobile phone includes an on-hook state, an off-hook state, and a ringing state.
  • the power supply is connected to the four telephones through the adjustment device, which are respectively the telephone 1, the telephone 2, the telephone 3 and the telephone 4.
  • the initial working states of the four telephones are all on-hook, and the adjustment device passes the phone's Tip line and The current change value between the Ring lines detects the working state of the phone at this moment.
  • the impedance of the phone under different working conditions is different.
  • the adjustment device detects the current change value between the Tip line and the Ring line to determine the operating state of the phone.
  • the adjusting device determines that the working state of the phone 1 is off-hook by detecting the current change value, the working state of the phone 2 is the ringing state, the working state of the phone 3 is the off-hook state, and the working state of the phone 4 is the off-hook state.
  • the adjusting device determines a required voltage corresponding to an operating state of each telephone according to a preset mapping relationship.
  • mapping relationship between the working state of the phone and the required voltage is pre-stored in the adjusting device, and the mapping relationship between the working state and the required voltage is preset and saved according to requirements, and the saved mapping relationship is read when the adjusting device works.
  • the adjustment device operates according to each phone detected by S101 - - The demand voltage corresponding to the status query.
  • mapping relationship is shown in Table 1:
  • off_hook indicates that the phone is in the off-hook state, and its corresponding demand voltage
  • V off h . . k -24V; on_hook indicates that the phone is on-hook, and its corresponding demand voltage
  • the adjusting device queries that the demand voltage corresponding to the telephone 1 is -24V, the demand voltage corresponding to the telephone 2 is -90V, and the corresponding voltage of the telephone 3 is -24V, and the telephone 4 corresponds to The demand voltage is -24V.
  • the adjusting device uses a maximum voltage value among the N required voltages as a target voltage, and instructs the power supply to adjust the output voltage to the target voltage.
  • the adjusting device selects the largest voltage value as the target voltage from the required voltage of the N telephones queried in S102, and instructs the power supply to adjust the output voltage to the target voltage.
  • the adjustment device determines The target voltage with the largest voltage value is -90V, indicating that the power supply regulates the output voltage to -90V.
  • the adjusting device adjusts the load voltage on each telephone to a required voltage corresponding to the working state according to the target voltage.
  • the adjusting device uses the target voltage input by the power supply to divide the target voltage through the voltage dividing circuit, so that the carrying voltage on each telephone is the required voltage corresponding to the working state, and the voltage dividing circuit can be the resistor partial voltage.
  • the circuit or the MOS tube voltage dividing circuit is not limited in the present invention.
  • the adjustment device adjusts the resistance of the resistor divider circuit so that the output voltage of the output port is -24V; for the telephone 2 The output port, the adjusting device directly loads the output voltage of the power supply to the phone 2; for the output port of the phone 3, the adjusting device adjusts the resistance of the resistor divider circuit so that the output voltage of the output port is -24V; for the phone 4 The output port of the adjusting device adjusts the resistance of the resistor divider circuit so that the output voltage of the output port is -24V.
  • Embodiments of the present invention by querying a demand voltage corresponding to an operating state of each telephone, determining a target voltage having a maximum voltage value from the required voltage, and instructing the power supply to adjust the output voltage to a target voltage, and according to the target voltage
  • one-way power supply can be used to supply power to the multi-channel telephone, which greatly reduces the number of power supply and reduces the cost.
  • FIG. 2 is a schematic flowchart of another method for adjusting a load voltage on a phone according to an embodiment of the present invention.
  • the method includes:
  • the adjusting device detects the working state of each telephone in the N telephone, and N is an integer greater than 1.
  • mapping relationship between the working state of the phone and the required voltage is pre-stored in the adjusting device, and the mapping relationship between the working state and the required voltage is preset and saved according to requirements, and the saved mapping relationship is read when the adjusting device works.
  • mapping relationship is shown in Table 2:
  • off_hook indicates that the phone is off-hook and its corresponding demand voltage
  • V off h . . k -24V; on_hook indicates that the phone is on-hook, and its corresponding demand voltage
  • the power supply is connected to the N telephone through the adjustment device.
  • N is an integer greater than 1.
  • the working status of the telephone includes the on-hook state, the off-hook state, and the ringing state.
  • the power supply is connected to the four telephones through the adjustment device, which are respectively the telephone 1, the telephone 2, the telephone 3 and the telephone 4.
  • the initial working states of the four telephones are all on-hook, and the adjustment device passes the phone's Tip line and The value of the voltage drop change between the Ring lines detects the working state of the phone at the moment. It is assumed that the adjusting device detects that the working state of the phone 1 is off-hook, the working state of the phone 2 is the ringing state, the working state of the phone 3 is the off-hook state, and the working state of the phone 4 is the off-hook state.
  • the adjusting device determines, according to the preset mapping relationship, a required voltage corresponding to an operating state of each telephone.
  • the adjustment device inquires that the demand voltage corresponding to the telephone 1 is -24V, the demand voltage corresponding to the telephone 2 is -90V, and the demand voltage corresponding to the telephone 3 is -24V.
  • the demand voltage corresponding to the telephone 4 is -24V. - -
  • the adjusting device uses a maximum voltage value among the N required voltages as a target voltage, and sends a pulse width modulation PWM (Pulse Width Modulation) signal to the power supply, so that the power supply adjusts the output voltage to the target according to the PWM signal. Voltage.
  • PWM Pulse Width Modulation
  • the adjusting device selects the largest voltage value as the target voltage from the required voltage of the N telephones queried in S101, and instructs the power supply to adjust the output voltage to the target voltage.
  • the power supply is a switching power supply.
  • the required voltage corresponding to the telephone 1 is -24V
  • the demand voltage corresponding to the telephone 2 is -90V
  • the demand voltage corresponding to the telephone 3 is -24V
  • the required voltage corresponding to the telephone 4 is - 24V
  • the adjusting device determines that the target voltage with the largest voltage value is -90V
  • the adjusting device sends a PWM signal to the power supply
  • the power supply adjusts the output voltage to -90V according to the indication of the PWM signal
  • the duty ratio of the signal of the PWM device is controlled by the adjusting device.
  • the adjusting device adjusts the voltage carried on each telephone to a required voltage corresponding to the working state according to the target voltage.
  • the adjusting device uses the target voltage input by the power supply to divide the target voltage through the voltage dividing circuit, so that the carrying voltage on each telephone is the required voltage corresponding to the working state, and the voltage dividing circuit can be the resistor partial voltage.
  • the circuit or the MOS tube voltage dividing circuit is not limited in the present invention.
  • the adjustment device adjusts the resistance of the resistor divider circuit so that the output voltage of the output port is -90V.
  • the adjusting device directly loads the output voltage of the power supply to the telephone 2; for the output port of the telephone 3, the adjusting device adjusts the resistance of the resistor divider circuit so that the output voltage of the output port is -24V; For the output port of the telephone 4, the adjusting device adjusts the resistance of the resistor divider circuit so that the output voltage of the output port is -24V.
  • the first voltage signal is input to the Tip line of the off-hook phone, and the second line is input to the ring line of the off-hook phone.
  • a voltage signal wherein the first voltage signal and the second voltage signal are opposite in phase and equal in amplitude, for example, inputting a two-way symmetric sine wave signal or a square wave signal, passing between a Tip line and a Ring line of the phone.
  • the input differential signal can effectively reduce the electromagnetic effect and cause crosstalk interference to the phones of adjacent lines.
  • the adjustment device detects its own internal temperature according to the preset period. If the temperature exceeds the preset temperature, the output voltage to each telephone is turned off.
  • the adjustment device detects that its internal temperature exceeds 175 °C, and adjusts the carrying voltage of each telephone to 0.
  • the adjustment device detects its own internal temperature. Less than 175 ° C, re-open the output voltage, so that the carrying voltage on each phone is normal.
  • the adjustment device has an over-temperature protection function, which can effectively prevent damage due to excessive temperature.
  • Embodiments of the present invention by querying a demand voltage corresponding to an operating state of each telephone, determining a target voltage having a maximum voltage value from the required voltage, and instructing the power supply to adjust the output voltage to a target voltage, and according to the target voltage
  • one-way power supply can be used to supply power to the multi-channel telephone, which greatly reduces the number of power supply and reduces the cost.
  • FIG. 3 is a schematic structural diagram of an apparatus for adjusting a voltage carrying on a telephone according to an embodiment of the present invention.
  • the apparatus includes:
  • the detecting module 10 is configured to detect the working state of each phone in the N telephone, and N is an integer greater than 1.
  • the power supply is connected to the N telephone through the adjusting device, and N is an integer greater than 1.
  • the working state of the mobile phone includes an on-hook state, an off-hook state, and a ringing state.
  • the power supply is connected to the four telephones through the adjustment device, which are respectively the telephone 1, the telephone 2, the telephone 3, and the telephone 4.
  • the initial working states of the four telephones are all on-hook, and the detection module 10 passes the telephone line of the telephone.
  • the current change value between the line and the Ring line detects the current working state of the phone. It is assumed that the detecting module 10 detects that the working state of the phone 1 is off-hook according to the current change value, the working state of the phone 2 is the ringing state, the working state of the phone 3 is the off-hook state, and the working state of the phone 4 is the off-hook state.
  • the query module 20 is configured to determine a required voltage corresponding to an operating state of each phone according to a preset mapping relationship.
  • the adjustment device stores a mapping relationship between the working state of the phone and the required voltage, and the query module 20 queries the corresponding demand voltage according to the working state of each phone detected by the detecting module 10.
  • mapping relationship is shown in Table 3: - -
  • off_hook indicates that the phone is off-hook and its corresponding demand voltage
  • V off h . . k -24V; on_hook indicates that the phone is on-hook, and its corresponding demand voltage
  • the query module 20 queries the phone according to the working state of the 4-way phone detected by the detecting module 10.
  • the corresponding demand voltage is -24V
  • the demand voltage corresponding to the telephone 2 is -90V
  • the demand voltage corresponding to the telephone 3 is -24V
  • the demand voltage corresponding to the telephone 4 is -24V.
  • the indicating module 30 is configured to use a maximum voltage value among the N required voltages as a target voltage, and instruct the power supply to adjust the output voltage to the target voltage.
  • the indication module 30 selects the largest voltage value from the required voltage of the N telephones queried by the query module 20 as the target voltage, and instructs the power supply to adjust the output voltage to the target voltage.
  • the query module 20 queries that the demand voltage corresponding to the phone 1 is -24V, the demand voltage corresponding to the phone 2 is -90V, the demand voltage corresponding to the phone 3 is -24V, and the demand voltage corresponding to the phone 4 is -24V, the indication module 30
  • the target voltage with the largest voltage value is determined to be -90V, indicating that the power supply regulates the output voltage to -90V.
  • the adjustment module 40 is configured to adjust the load voltage on each telephone to a required voltage corresponding to the working state according to the target voltage.
  • the adjusting device uses the target voltage input by the power supply to divide the target voltage into a voltage, so that the carrying voltage on each telephone is the required voltage corresponding to the working state.
  • the output voltage of the power supply is -90V, for the output port of the telephone 1, the adjustment module
  • the output voltage of the output port is adjusted to -24V through the voltage dividing circuit; for the output port of the phone 2, the regulating module 40 directly loads the output voltage of the power supply to the phone 2; for the output port of the phone 3, the adjusting module 40 passes The voltage dividing circuit adjusts the output voltage of the output port to -24V. For the output port of the telephone 4, the regulating module 40 adjusts the output voltage of the output port to -24V through the voltage dividing circuit.
  • Embodiments of the present invention by querying a demand voltage corresponding to an operating state of each telephone, determining a target voltage having a maximum voltage value from the required voltage, and instructing the power supply to adjust the output voltage to a target voltage, and according to the target voltage Adjust the load voltage on each phone to its working status - -
  • the required voltage can be used to power the multi-channel telephones with one power supply, which greatly reduces the cost of the power supply.
  • FIG. 4 is another schematic structural diagram of an apparatus for adjusting a voltage carrying on a telephone according to an embodiment of the present invention.
  • the query module 20 in addition to the detection module 10, the query module 20, the indication module 30, and the adjustment module 40, also includes:
  • the over temperature protection module 50 is configured to detect the temperature inside itself, and if the temperature exceeds the preset temperature threshold, the carrying voltage of each phone is adjusted to zero.
  • the indicating module 30 is configured to send a pulse width modulated PWM signal to the power supply, so that the power supply adjusts the output voltage to the target voltage according to the PWM signal.
  • the adjusting module 40 is configured to: when detecting that the phone in the off-hook state performs dialing, input a first voltage signal to the Tip line of the off-hook phone, and input to the Ring line of the off-hook phone. a second voltage signal; wherein: the first voltage signal and the second voltage signal have opposite phases and equal amplitudes, for example, input two symmetric sine wave signals or square wave signals to reduce adjacent words when dialing The machine causes crosstalk interference.
  • FIG. 6 is still another schematic structural diagram of an apparatus for adjusting a voltage carrying on a telephone according to an embodiment of the present invention.
  • the adjusting apparatus 1 includes a processor 61 and a memory 62, and the processor 61 in the adjusting apparatus 1
  • the number of memories may be one or more, and the number of memories 62 may be one or more 62, and FIG. 6 is exemplified by one processor and one memory.
  • the processor 61 and the memory 62 may be connected by a bus or other means, and the bus connection is taken as an example in FIG.
  • the memory 62 stores a set of program codes
  • the processor 61 is configured to call the program code stored in the memory 62 for performing the following operations:
  • N is an integer greater than 1.
  • the load voltage on each telephone is adjusted to a required voltage corresponding to its operating state according to the target voltage.
  • the power supply is connected to the N telephone through the adjusting device, and N is an integer greater than 1, - -
  • the working status of the machine includes the on-hook status, off-hook status, and ring status.
  • the power supply is connected to the four telephones through the adjustment device, which are respectively the telephone 1, the telephone 2, the telephone 3, and the telephone 4.
  • the initial working states of the four telephones are all on-hook, and the processor 61 passes the telephone line of the telephone.
  • the current change value between the Ring line and the Ring line detects the current working state of the phone.
  • the impedance of the phone under different working conditions is different.
  • the processor 61 detects the current change value between the Tip line and the Ring line to determine the operating state of the phone.
  • the processor 61 determines that the working state of the phone 1 is off-hook by detecting the current change value, the working state of the phone 2 is the ringing state, the working state of the phone 3 is the off-hook state, and the working state of the phone 4 is the off-hook state.
  • the memory 62 pre-stores the mapping relationship between the operating state of the telephone and the required voltage, and the processor 61 queries the corresponding demand voltage from the memory 62 based on the detected operating state of each telephone.
  • mapping relationship is shown in Table 4:
  • off_hook indicates that the phone is off-hook and its corresponding demand voltage
  • V off h . . k -24V; on_hook indicates that the phone is on-hook, and its corresponding demand voltage
  • the processor 61 queries that the demand voltage corresponding to the telephone 1 is -24V, the demand voltage corresponding to the telephone 2 is -90V, and the demand voltage corresponding to the telephone 3 is -24V, and the telephone 4 corresponds to The demand voltage is -24V.
  • the processor 61 queries that the required voltage corresponding to the phone 1 is -24V according to the mapping relationship stored in the memory 62, the demand voltage corresponding to the phone 2 is -90V, and the demand voltage corresponding to the phone 3 is -24V, and the required voltage corresponding to the phone 4 is -24V, the adjustment device determines that the target voltage with the largest voltage value is -90V, indicating that the power supply regulates the output voltage to -90V.
  • the processor 61 uses the target voltage input by the power supply to divide the target voltage through the voltage dividing circuit to make the load voltage on each telephone the required voltage corresponding to the working state, and the voltage dividing circuit can be a resistor voltage dividing circuit or The MOS tube voltage dividing circuit is not limited in the present invention.
  • the processor 61 adjusts the resistance of the resistor divider circuit so that the output voltage of the output port is -24V; for the output port of the phone 2, the processor 61 directly loads the output voltage of the power supply to the phone 2; For the output port of the telephone 3, the processor 61 adjusts the resistance of the resistor divider circuit so that the output voltage of the output port is -24V; for the output port of the telephone 4, the processor 61 adjusts the resistance of the resistor divider circuit. The output voltage of this output port is -24V.
  • the operating state of the phone includes: an off-hook state, an on-hook state, or a ringing state.
  • the processor 61 performs the step of instructing the power supply to adjust an output voltage to the target voltage, including:
  • the processor 61 sends a pulse width modulated PWM signal to the power supply such that the power supply regulates the output voltage to the target voltage in accordance with the PWM signal.
  • the power supply is a switching power supply
  • the processor 61 sends a P WM signal with a different duty ratio to the power supply to control the output voltage of the power supply.
  • the processor performing the step of adjusting the load voltage on each telephone to a required voltage corresponding to an operating state of the telephone according to the target voltage includes:
  • the processor 61 is further configured to:
  • the internal temperature is detected. If the temperature exceeds the preset temperature threshold, the load voltage of each telephone is adjusted to zero.
  • Embodiments of the present invention by querying a demand voltage corresponding to an operating state of each telephone, determining a target voltage having a maximum voltage value from the required voltage, and instructing the power supply to adjust the output voltage to a target voltage, and according to the target voltage
  • one-way power supply can be used to supply power to the multi-channel telephone, which greatly reduces the number of power supply and reduces the cost.
  • FIG. 7 is a schematic structural diagram of a POTS (Plain Old Telephone Service) communication system according to an embodiment of the present invention.
  • a two-way telephone (telephone 3 and telephone 4) is included as an adjustment device.
  • SLIC Subscriber Line Interface Circuit
  • two phones are connected to the power supply through the SLIC chip.
  • - - The working principle of the system is as follows: The power supply 2 is connected to the 2 telephones through the SLIC chip 1 , and the SLIC chip 1 detects the working status of each telephone in the 2 telephones, and queries the working status of each telephone according to the preset mapping relationship.
  • Corresponding demand voltage determining the maximum voltage value from the two required voltages as the target voltage, and instructing the power supply source 2 to adjust the output voltage to the target voltage, and the SLIC chip 1 adjusts the load voltage on each telephone to work according to the target voltage.
  • the demand voltage corresponding to the state.
  • Embodiments of the present invention by querying a demand voltage corresponding to an operating state of each telephone, determining a target voltage having a maximum voltage value from the required voltage, and instructing the power supply to adjust the output voltage to a target voltage, and according to the target voltage
  • one-way power supply can be used to supply power to the multi-channel telephone, which greatly reduces the number of power supply and reduces the cost.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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  • Devices For Supply Of Signal Current (AREA)
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Abstract

本发明公开了一种话机上承载电压的调节方法、装置及系统,所述调节方法包括:调节装置检测N路话机中每路话机的工作状态,N为大于1的整数(S101);调节装置根据预置的映射关系确定每路话机的工作状态对应的需求电压(S102);调节装置将N个需求电压中最大的电压值作为目标电压,并指示供电电源将输出电压调节为目标电压(S103);调节装置根据目标电压将每路话机上承载电压调节为与其工作状态对应的需求电压(S104)。本发明可以减少供电电源的数量,降低成本。

Description

一 一
一种话机上承载电压的调节方法、 装置及系统
技术领域
本发明涉及通信领域, 尤其涉及一种话机上承载电压的调节方法、装置及 系统。 背景技术
传统电话业务(POTS )作为标准的模拟电话服务, 是全球家庭住户和企 业电话服务的主要组成部分。 电话交换系统可以为多路话机提供电能,传统语 音线路供电系统一般为分离型,即每路话机对应采用一套独立的供电系统进行 供电。
如图 1所示的分离型供电系统的结构示意图, 给系统中示意性画出两路话 机: 话机 16和话机 17, 供电电源 11和供电电源 12为两路独立的供电电源, 供电 电源 11通过 SLIC芯片为话机 16提供工作时所需的电能, 供电电源 12通过 SLIC 为话机 17提供工作时所需的电能, 两路话机分别通过 Tip/Ring线与 SLIC芯片连 接。
综上, 多路话机需要使用多路电源供电, 电源器件多, 使得整个系统造价 较高, 且 SLIC芯片需要分别对多路电源系统进行管理, 增加了系统的复杂度。 发明内容
本发明实施例提供了一种话机上承载电压的调节方法、装置及系统, 可以 通过对每路话机的工作状态的监控,指示电源输出话机所需的最大电压, 实现 只使用一路电源对多路话机进行供电的功能, 大幅精筒了供电电源的数量, 降 低了成本。
本发明实施例第一方面提供了一种话机上承载电压的调节方法, N路话机 通过调节装置与供电电源连接, 所述方法包括:
所述调节装置检测 N路话机中每路话机的工作状态, N为大于 1的整数; 所述调节装置根据预置的映射关系确定所述每路话机的工作状态对应的 需求电压;
所述调节装置将 N个所述需求电压中最大的电压值作为目标电压, 并指示 - - 所述供电电源将输出电压调节为所述目标电压;
所述调节装置根据所述目标电压将每路话机上承载电压调节为与其工作 状态对应的需求电压。
在第一种可能的实施方式中, 话机的工作状态包括: 摘机状态、 挂机状态 或振铃状态。
结合第一方面或第一种可能的实现方式,在第二种可能的实现方式中, 所 述供电电源为开关电源,所述指示所述供电电源将输出电压调节为所述目标电 压的步骤包括:
所述调节装置向所述供电电源发送脉沖宽度调制 PWM信号, 以使所述供 电电源根据所述 PWM信号将输出电压调节为所述目标电压。
结合第一方面至第二种可能的实现方式中的任一种,在第三种可能的实现 方式中,所述调节装置根据所述目标电压将每路话机上承载电压调节为与话机 的工作状态对应的需求电压的步骤包括:
若检测到处于摘机状态的话机进行拨号时,所述调节装置向所述处于摘机 状态的话机的 Tip线输入第一电压信号, 及向所述处于摘机状态的话机的 Ring 线输入第二电压信号; 其中, 所述第一电压信号和所述第二电压信号的相位相 反且幅度相等。
结合第一方面至第三种可能的实现方式中的任一种,在第四种可能的实现 方式中, 还包括:
所述调节装置检测自身内部的温度;
若所述温度超过预置温度阈值,所述调节装置将每路话机的承载电压调节 为零。
本发明第二方面提供了一种话机上承载电压的调节装置, 包括: 检测模块, 用于检测 N路话机中每路话机的工作状态, N为大于 1的整数; 查询模块,用于根据预置的映射关系确定所述每路话机的工作状态对应的 需求电压;
指示模块, 用于将 N个所述需求电压中最大的电压值作为目标电压, 并指 示供电电源将输出电压调节为所述目标电压;
调节模块,用于根据所述目标电压将每路话机上承载电压调节为与其工作 状态对应的需求电压。 - - 在第一种可能的实现方式中,话机的工作状态包括:摘机状态、挂机状态、 摘机状态或振铃状态。
结合第二方面或第一种可能的实现方式,在第二种可能的实现方式中, 所 述供电电源为开关电源,所述指示模块用于向所述供电电源发送脉沖宽度调制 PWM信号, 以使所述供电电源根据所述 PWM信号将输出电压调节为所述目标 电压。
结合第二方面至第二种可能的实现方式中的任一种,在第三种可能的实现 方式中, 所述调节模块用于若检测到处于摘机状态的话机进行拨号时, 向所述 处于摘机状态的话机的 Tip线输入第一电压信号, 及向所述处于摘机状态的话 机的 Ring线输入第二电压信号; 其中, 所述第一电压信号和所述第二电压信号 的相位相反且幅度相等。
结合第二方面至第三种可能的实现方式中的任一种,在第四种可能的实现 方式中, 还包括:
过温保护模块,用于检测自身内部的温度;若所述温度超过预置温度阈值, 将每路话机的承载电压调节为零。
本发明第三方面提供了一种话机上承载电压的调节装置, 包括:
包括至少一个处理器和至少一个存储器, 所述存储器中存储一组程序代 码, 所述处理器调用所述存储器中存储的程序代码, 用于执行以下操作:
检测 N路话机中每路话机的工作状态, N为大于 1的整数;
根据预置的映射关系确定所述每路话机的工作状态对应的需求电压; 将 N个所述需求电压中最大的电压值作为目标电压, 并指示供电电源将输 出电压调节为所述目标电压;
根据所述目标电压将每路话机上承载电压调节为与其工作状态对应的需 求电压。
结合第三方面, 在第一种可能的实现方式中, 话机的工作状态包括: 摘机 状态、 挂机状态或振铃状态。
结合第三方面或第一种可能的实现方式,在第二种可能的实现方式中, 所 述供电电源为开关电源,所述处理器执行所述指示所述供电电源将输出电压调 节为所述目标电压的步骤包括:
所述处理器向所述供电电源发送脉沖宽度调制 PWM信号, 以使所述供电 - - 电源根据所述 PWM信号将输出电压调节为所述目标电压。
结合第三方面至第二种可能的实现方式中的任一种,在第三种可能的实现 方式中,所述处理器执行所述根据所述目标电压将每路话机上承载电压调节为 与话机的工作状态对应的需求电压的步骤包括:
若检测到处于摘机状态的话机进行拨号时,所述处理器向所述处于摘机状 态的话机的 Tip线输入第一电压信号, 及向所述处于摘机状态的话机的 Ring线 输入第二电压信号; 其中, 所述第一电压信号和所述第二电压信号的相位相反 且幅度相等。
结合第三方面至第三种可能的实现方式中的任一种,在第四种可能的实现 方式中, 所述处理器还用于执行:
检测自身内部的温度;
若所述温度超过预置温度阈值, 将每路话机的承载电压调节为零。
本发明第四方面提供了一种 POTS通信系统, 包括至少一路话机和上述任 意一种调节装置, 所述话机通过所述调节装置与供电电源连接。
通过查询每路话机的工作状态对应的需求电压,从需求电压中确定电压值 最大的目标电压, 并指示供电电源将输出电压调节为目标电压, 同时根据所述 目标电压将每路话机上承载电压调节为与其工作状态对应的需求电压,可使用 一路电源对多路话机进行供电, 大幅精筒了供电电源的数量, 降低了成本。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施 例中所需要使用的附图作筒单地介绍,显而易见地, 下面描述中的附图仅仅是 本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的 前提下, 还可以根据这些附图获得其他的附图。
图 1 为现有技术的话机供电电路的结构示意图;
图 2 为本发明实施例的一种话机上承载电压的调节方法的流程示意图; 图 3 为本发明实施例的一种话机上承载电压的调节方法的另一流程示意 图;
图 4 为本发明实施例的一种话机上承载电压的调节装置的结构示意图; 图 5 为本发明实施例的一种话机上承载电压的调节装置的另一结构示意 - - 图;
图 6 为本发明实施例的一种话机上承载电压的调节装置的又一结构示意 图;
图 7为本发明实施例的一种 POTS通信系统的结构示意图。 具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清 楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实施例, 而不是 全部的实施例。基于本发明中的实施例, 本领域普通技术人员在没有作出创造 性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范围。
请参照图 1 , 为本发明实施例的一种话机上承载电压的调节方法的流程示 意图; 在本实施例中, 所述方法包括以下步骤:
S101、 调节装置检测 N路话机中每路话机的工作状态, N为大于 1的整 数。
具体的, 供电电源通过调节装置连接 N路话机, N为大于 1的整数, 话 机的工作状态包括挂机状态、 摘机状态和振铃状态。
例如, N=4, 供电电源通过调节装置连接 4路话机, 分别为话机 1、 话机 2、 话机 3和话机 4, 4路话机的初始工作状态均为挂机状态, 调节装置通过话 机的 Tip线与 Ring线之间的电流变化值检测话机此刻的工作状态, 不同工作 状态下的话机的阻抗不相同, 话机从一个工作状态切换到另一个工作状态时, 其 Tip线与 Ring线之间的电流会发生变化, 调节装置检测 Tip线和 Ring线之 间的电流变化值来确定话机的工作状态。
假设调节装置通过检测电流变化值确定话机 1的工作状态为摘机状态,话 机 2的工作状态为振铃状态,话机 3的工作状态为摘机状态,话机 4的工作状 态为摘机状态。
S 102、调节装置根据预置的映射关系确定每路话机的工作状态对应的需求 电压。
具体的,调节装置中预先存储有话机的工作状态与需求电压之间的映射关 系, 工作状态与需求电压之间的映射关系根据需要预先设置好并保存,调节装 置工作时读取保存的映射关系。 调节装置根据 S101检测到的每路话机的工作 - - 状态查询对应的需求电压。
例如, 映射关系如表 1所示:
Figure imgf000008_0001
表 1
表 1中, off_hook表示话机处于摘机状态, 其对应的需求电压
Voff h。。k=-24V; on_hook表示话机处于挂机状态, 其对应的需求电压
V。nh。。k=-48V; ring表示话机处于振铃状态, 其对应的需求电压 Vring =-90V。
调节装置根据 S101检测到的 4路话机的工作状态, 查询到话机 1对应的 需求电压为 -24V, 话机 2对应的需求电压为 -90V, 话机 3对应的需求电压为 -24V, 话机 4对应的需求电压为 -24V。
S103、 调节装置将 N个需求电压中最大的电压值作为目标电压, 并指示 供电电源将输出电压调节为目标电压。
具体的, 调节装置从 S102中查询到的 N路话机的需求电压中选择电压值 最大的作为目标电压, 指示供电电源将输出电压调节为目标电压。
例如, S 102中查询到话机 1对应的需求电压为 -24V , 话机 2对应的需求 电压为 -90V, 话机 3对应的需求电压为 -24V, 话机 4对应的需求电压为 -24V, 调节装置确定电压值最大的目标电压为 -90V,指示供电电源将输出电压调节为 -90V。
S 104、调节装置根据目标电压将每路话机上的承载电压调节为与其工作状 态对应的需求电压。
具体的,调节装置利用供电电源输入的目标电压,将目标电压经过分压电 路进行分压处理后使每路话机上的承载电压为其工作状态对应的需求电压,分 压电路可以是电阻分压电路或 MOS管分压电路, 本发明不作限制。
以电阻分压电路为例,假设供电电源的输出电压为 -90V,针对话机 1的输 出端口, 调节装置通过调节电阻分压电路的阻值使该输出端口的输出电压为 -24V;针对话机 2的输出端口,调节装置直接将供电电源的输出电压加载至话 机 2; 针对话机 3的输出端口, 调节装置通过调节电阻分压电路的阻值使该输 出端口的输出电压为 -24V;针对话机 4的输出端口,调节装置通过调节电阻分 压电路的阻值使该输出端口的输出电压为 -24V。 实施本发明的实施例,通过查询每路话机的工作状态对应的需求电压,从 需求电压中确定电压值最大的目标电压,并指示供电电源将输出电压调节为目 标电压,同时根据所述目标电压将每路话机上承载电压调节为与其工作状态对 应的需求电压, 可使用一路电源对多路话机进行供电, 大幅精筒了供电电源的 数量, 降低了成本。
参见图 2, 为本发明实施例的一种话机上承载电压的调节方法的另一流程 示意图, 在本实施例中, 所述方法包括:
S201、 调节装置检测 N路话机中每路话机的工作状态, N为大于 1的整 数。
具体的,调节装置中预先存储有话机的工作状态与需求电压之间的映射关 系, 工作状态与需求电压之间的映射关系根据需要预先设置好并保存, 调节 装置工作时读取保存的映射关系。 例如, 映射关系如表 2所示:
Figure imgf000009_0001
表 2
表 2中, off_hook表示话机处于摘机状态, 其对应的需求电压
Voff h。。k=-24V; on_hook表示话机处于挂机状态, 其对应的需求电压
V。nh。。k=-48V; ring表示话机处于振铃状态, 其对应的需求电压 Vring =-90V。
供电电源通过调节装置连接 N路话机, N为大于 1的整数, 话机的工作 状态包括挂机状态、 摘机状态和振铃状态。
例如, N=4, 供电电源通过调节装置连接 4路话机, 分别为话机 1、 话机 2、 话机 3和话机 4, 4路话机的初始工作状态均为挂机状态, 调节装置通过话 机的 Tip线与 Ring线之间的压降变化值检测话机此刻的工作状态。 假设调节 装置检测到话机 1的工作状态为摘机状态,话机 2的工作状态为振铃状态,话 机 3的工作状态为摘机状态, 话机 4的工作状态为摘机状态。
S202、调节装置根据预置的映射关系确定每路话机的工作状态对应的需求 电压。
调节装置根据 S201检测到的 4路话机的工作状态, 在表 2中查询到话机 1对应的需求电压为 -24V, 话机 2对应的需求电压为 -90V, 话机 3对应的需求 电压为 -24V, 话机 4对应的需求电压为 -24V。 - -
5203、 调节装置将 N个需求电压中最大的电压值作为目标电压, 向供电 电源发送脉沖宽度调制 PWM ( Pulse Width Modulation, 脉宽调制)信号, 以 使供电电源根据 PWM信号将输出电压调节为目标电压。
具体的, 调节装置从 S101中查询到的 N路话机的需求电压中选择电压值 最大的作为目标电压, 指示供电电源将输出电压调节为目标电压。
例如,供电电源为开关电源, S201中查询到话机 1对应的需求电压为 -24V, 话机 2对应的需求电压为 -90V,话机 3对应的需求电压为 -24V,话机 4对应的 需求电压为 -24V,调节装置确定电压值最大的目标电压为 -90V,调节装置向供 电电源发送 PWM信号, 供电电源根据 PWM信号的指示将输出电压调节为 -90V,调节装置通过控制 PWM的信号的占空比来实现对供电电源的输出电压 的调节。
5204、调节装置根据目标电压将每路话机上承载电压调剂为与其工作状态 对应的需求电压。
具体的,调节装置利用供电电源输入的目标电压,将目标电压经过分压电 路进行分压处理后使每路话机上的承载电压为其工作状态对应的需求电压,分 压电路可以是电阻分压电路或 MOS管分压电路, 本发明不作限制。
以电阻分压电路为例,假设供电电源的输出电压为 -90V,针对话机 1的输 出端口, 调节装置通过调节电阻分压电路的阻值使该输出端口的输出电压为
-24V;针对话机 2的输出端口,调节装置直接将供电电源的输出电压加载至话 机 2; 针对话机 3的输出端口, 调节装置通过调节电阻分压电路的阻值使该输 出端口的输出电压为 -24V;针对话机 4的输出端口,调节装置通过调节电阻分 压电路的阻值使该输出端口的输出电压为 -24V。
优选的, 若检测到处于摘机状态的话机进行拨号时, 向所述处于摘机状态 的话机的 Tip线输入第一电压信号, 及向所述处于摘机状态的话机的 Ring线输 入第二电压信号; 其中, 所述第一电压信号和所述第二电压信号的相位相反且 幅度相等, 例如输入两路对称的正弦波信号或方波信号, 通过在话机的 Tip线 和 Ring线之间输入差分信号,可有效减小电磁效应对相邻的线路的话机产生串 音干扰。
5205、根据预置的周期检测自身内部的温度,若该温度超过预置温度阈值, 将每路话机的承载电压调节为 0。 - - 具体的,调节装置根据预置的周期检测自身内部的温度, 若温度超过预置 温度, 关闭输出至每路话机的输出电压。
例如, 预置温度阈值为 175°C , 调节装置检测到自身内部的温度超过 175 °C , 将每路话机的承载电压调节为 0, 在下个周期来临时, 调节装置若检 测到自身内部的温度小于 175°C , 重新开启输出电压, 使每路话机上的承载电 压为正常值。 调节装置具有过温保护功能, 能有效防止因温度过高而损坏。
实施本发明的实施例,通过查询每路话机的工作状态对应的需求电压,从 需求电压中确定电压值最大的目标电压,并指示供电电源将输出电压调节为目 标电压,同时根据所述目标电压将每路话机上承载电压调节为与其工作状态对 应的需求电压, 可使用一路电源对多路话机进行供电, 大幅精筒了供电电源的 数量, 降低了成本。
参见图 3, 为本发明实施例的一种话机上承载电压的调节装置的结构示意 图, 在本实施例中所述装置包括:
检测模块 10,用于检测 N路话机中每路话机的工作状态, N为大于 1的整数。 具体的, 供电电源通过调节装置连接 N路话机, N为大于 1的整数, 话 机的工作状态包括挂机状态、 摘机状态和振铃状态。
例如, N=4, 供电电源通过调节装置连接 4路话机, 分别为话机 1、 话机 2、 话机 3和话机 4, 4路话机的初始工作状态均为挂机状态, 检测模块 10通 过话机的 Tip线与 Ring线之间的电流变化值检测话机此刻的工作状态。 假设 检测模块 10根据电流变化值检测到话机 1的工作状态为摘机状态, 话机 2的 工作状态为振铃状态,话机 3的工作状态为摘机状态,话机 4的工作状态为摘 机状态。
查询模块 20,用于根据预置的映射关系确定每路话机的工作状态对应的需 求电压。
具体的, 调节装置中存储有话机的工作状态与需求电压之间的映射关系, 查询模块 20根据检测模块 10检测到的每路话机的工作状态查询对应的需求电 压。
例如, 映射关系如表 3所示: - -
Figure imgf000012_0001
表 3
表 3中, off_hook表示话机处于摘机状态, 其对应的需求电压
Voff h。。k=-24V; on_hook表示话机处于挂机状态, 其对应的需求电压
V。nh。。k=-48V; ring表示话机处于振铃状态, 其对应的需求电压 Vring =-90V。
查询模块 20根据检测模块 10检测到的 4路话机的工作状态,查询到话机
1对应的需求电压为 -24V, 话机 2对应的需求电压为 -90V, 话机 3对应的需求 电压为 -24V, 话机 4对应的需求电压为 -24V。
指示模块 30, 用于将 N个需求电压中最大的电压值作为目标电压, 并指示 所述供电电源将输出电压调节为所述目标电压。
具体的, 指示模块 30从查询模块 20中查询到的 N路话机的需求电压中 选择最大的电压值作为目标电压, 指示供电电源将输出电压调节为目标电压。
例如, 查询模块 20查询到话机 1对应的需求电压为 -24V, 话机 2对应的 需求电压为 -90V, 话机 3对应的需求电压为 -24V, 话机 4对应的需求电压为 -24V, 指示模块 30确定电压值最大的目标电压为 -90V, 指示供电电源将输出 电压调节为 -90V。
调节模块 40 ,用于根据所述目标电压将每路话机上承载电压调节为与其工 作状态对应的需求电压。
具体的,调节装置利用供电电源输入的目标电压,将目标电压进行分压处 理后使每路话机上的承载电压为其工作状态对应的需求电压。
例如, 供电电源的输出电压为 -90V, 针对话机 1的输出端口, 调节模块
40通过分压电路将该输出端口的输出电压调节为 -24V; 针对话机 2的输出端 口, 调节模块 40直接将供电电源的输出电压加载至话机 2; 针对话机 3的输 出端口, 调节模块 40通过分压电路将输出端口的输出电压调节为 -24V; 针对 话机 4的输出端口, 调节模块 40通过分压电路将该输出端口的输出电压调节 为 -24V。
实施本发明的实施例,通过查询每路话机的工作状态对应的需求电压,从 需求电压中确定电压值最大的目标电压,并指示供电电源将输出电压调节为目 标电压,同时根据所述目标电压将每路话机上承载电压调节为与其工作状态对 - - 应的需求电压, 可使用一路电源对多路话机进行供电, 大幅精筒了供电电源的 数量, 降低了成本。
参见图 4, 为本发明实施例的一种话机上承载电压的调节装置的另一结构 示意图, 在本实施例中, 除包括检测模块 10、 查询模块 20、 指示模块 30和调节 模块 40之外, 还包括:
过温保护模块 50, 用于检测自身内部的温度, 若所述温度超过预置温度阈 值, 将每路话机的承载电压调节为零。
优选的, 指示模块 30用于向所述供电电源发送脉沖宽度调制 PWM信号, 以使所述供电电源根据所述 PWM信号将输出电压调节为所述目标电压。
调节模块 40用于若检测到处于摘机状态的话机进行拨号时,向所述处于摘 机状态的话机的 Tip线输入第一电压信号, 及向所述处于摘机状态的话机的 Ring线输入第二电压信号; 其中, 所述第一电压信号和所述第二电压信号的相 位相反且幅度相等, 例如输入两路对称的正弦波信号或方波信号, 以减小拨号 时对邻近线路的话机造成串音干扰。
本实施例和方法实施例二属于同一构思, 其带来的技术效果也相同, 具体 请参照方法实施例二的描述, 此处不再赘述。
参见图 6, 为本发明实施例的一种话机上承载电压的调节装置的又一结构 示意图, 在本实施例中, 调节装置 1包括处理器 61和存储器 62, 调节装置 1 中的处理器 61的数量可以是一个或多个,存储器 62的数量可以是一个或多个 62, 图 6 以一个处理器, 一个存储器为例。 本发明的一些实施例中, 处理器 61和存储器 62可通过总线或其他方式连接, 图 6中以总线连接为例。
其中, 存储器 62中存储一组程序代码, 且处理器 61用于调用存储器 62 中存储的程序代码, 用于执行以下操作:
检测 N路话机中每路话机的工作状态, N为大于 1的整数;
根据预置的映射关系确定所述每路话机的工作状态对应的需求电压; 将 N个所述需求电压中最大的电压值作为目标电压, 并指示供电电源将输 出电压调节为所述目标电压;
根据所述目标电压将每路话机上承载电压调节为与其工作状态对应的需 求电压。
具体的, 供电电源通过调节装置连接 N路话机, N为大于 1的整数, 话 - - 机的工作状态包括挂机状态、 摘机状态和振铃状态。
例如, N=4, 供电电源通过调节装置连接 4路话机, 分别为话机 1、 话机 2、 话机 3和话机 4, 4路话机的初始工作状态均为挂机状态, 处理器 61通过 话机的 Tip线与 Ring线之间的电流变化值检测话机此刻的工作状态, 不同工 作状态下的话机的阻抗不相同, 话机从一个工作状态切换到另一个工作状态 时, 其 Tip线与 Ring线之间的电流会发生变化, 处理器 61检测 Tip线和 Ring 线之间的电流变化值来确定话机的工作状态。
假设处理器 61通过检测电流变化值确定话机 1的工作状态为摘机状态, 话机 2的工作状态为振铃状态,话机 3的工作状态为摘机状态,话机 4的工作 状态为摘机状态。
存储器 62预先存储有话机的工作状态与需求电压之间的映射关系, 处理 器 61根据检测到的每路话机的工作状态从存储器 62中查询对应的需求电压。
例如, 映射关系如表 4所示:
Figure imgf000014_0001
表 4
表 4中, off_hook表示话机处于摘机状态, 其对应的需求电压
Voff h。。k=-24V; on_hook表示话机处于挂机状态, 其对应的需求电压
V。nh。。k=-48V; ring表示话机处于振铃状态, 其对应的需求电压 Vring =-90V。
处理器 61根据检测到的 4路话机的工作状态, 查询到话机 1对应的需求 电压为 -24V, 话机 2对应的需求电压为 -90V, 话机 3对应的需求电压为 -24V, 话机 4对应的需求电压为 -24V。
处理器 61根据存储器 62中存储的映射关系查询到话机 1对应的需求电压 为 -24V, 话机 2对应的需求电压为 -90V, 话机 3对应的需求电压为 -24V, 话 机 4对应的需求电压为 -24V,调节装置确定电压值最大的目标电压为 -90V,指 示供电电源将输出电压调节为 -90V。
处理器 61利用供电电源输入的目标电压, 将目标电压经过分压电路进行 分压处理后使每路话机上的承载电压为其工作状态对应的需求电压,分压电路 可以是电阻分压电路或 MOS管分压电路, 本发明不作限制。
以电阻分压电路为例,假设供电电源的输出电压为 -90V,针对话机 1的输 - - 出端口, 处理器 61通过调节电阻分压电路的阻值使该输出端口的输出电压为 -24V; 针对话机 2的输出端口, 处理器 61直接将供电电源的输出电压加载至 话机 2; 针对话机 3的输出端口, 处理器 61通过调节电阻分压电路的阻值使 该输出端口的输出电压为 -24V; 针对话机 4的输出端口, 处理器 61通过调节 电阻分压电路的阻值使该输出端口的输出电压为 -24V。
在本发明的一些实施例中, 话机的工作状态包括: 摘机状态、 挂机状态或 振铃状态。
在本发明的一些实施例中,处理器 61执行所述指示所述供电电源将输出电 压调节为所述目标电压的步骤包括:
处理器 61向所述供电电源发送脉沖宽度调制 PWM信号, 以使所述供电电 源根据所述 PWM信号将输出电压调节为所述目标电压。
具体的, 供电电源为开关电源, 处理器 61向供电电源发送不同占空比的 P WM信号来控制供电电源的输出电压。
在本发明的一些实施例中,所述处理器执行所述根据所述目标电压将每路 话机上承载电压调节为与话机的工作状态对应的需求电压的步骤包括:
若检测到处于摘机状态的话机进行拨号时,向所述处于摘机状态的话机的 Tip线输入第一电压信号, 及向所述处于摘机状态的话机的 Ring线输入第二电 压信号;其中,所述第一电压信号和所述第二电压信号的相位相反且幅度相等。
在发明的一些实施例中, 处理器 61还用于执行:
检测自身内部的温度, 若所述温度超过预置温度阈值,将每路话机的承载 电压调节为零。
实施本发明的实施例,通过查询每路话机的工作状态对应的需求电压,从 需求电压中确定电压值最大的目标电压,并指示供电电源将输出电压调节为目 标电压,同时根据所述目标电压将每路话机上承载电压调节为与其工作状态对 应的需求电压, 可使用一路电源对多路话机进行供电, 大幅精筒了供电电源的 数量, 降低了成本。
参见图 7, 为本发明实施例的一种 POTS ( Plain Old Telephone Service, 传 统电话业务)通信系统的结构示意图, 在本实施例中包括两路话机(话机 3和 话机 4 )、 作为调节装置的 SLIC ( Subscriber Line Interface Circuit, 用户线接口 电路) 芯片 1 , 两路话机通过 SLIC芯片与供电电源连接。 - - 该系统的工作原理为: 供电电源 2通过 SLIC芯片 1与 2路话机连接, SLIC芯 片 1检测 2路话机中每路话机的工作状态,根据预置的映射关系查询每路话机的 工作状态对应的需求电压,从 2个需求电压中确定最大的电压值作为目标电压, 并指示供电电源 2将输出电压调节为目标电压, SLIC芯片 1根据目标电压将每 路话机上承载电压调节为与其工作状态对应的需求电压。
实施本发明的实施例,通过查询每路话机的工作状态对应的需求电压,从 需求电压中确定电压值最大的目标电压,并指示供电电源将输出电压调节为目 标电压,同时根据所述目标电压将每路话机上承载电压调节为与其工作状态对 应的需求电压, 可使用一路电源对多路话机进行供电, 大幅精筒了供电电源的 数量, 降低了成本。
本领域普通技术人员可以理解:实现上述方法实施例的全部或部分步骤可 以通过程序指令相关的硬件来完成,前述的程序可以存储于一计算机可读取存 储介质中, 该程序在执行时, 执行包括上述方法实施例的步骤; 而前述的存储 介质包括: ROM、 RAM, 磁碟或者光盘等各种可以存储程序代码的介质。
以上对本发明实施例进行了详细介绍,本文中应用了具体个例对本发明的 原理及实施方式进行了阐述,以上实施例的说明只是用于帮助理解本发明的方 法及其核心思想; 同时, 对于本领域的一般技术人员, 依据本发明的思想, 在 具体实施方式及应用范围上均会有改变之处, 综上所述,本说明书内容不应理 解为对本发明的限制。

Claims

权 利 要 求
1、 一种话机上承载电压的调节方法, 其特征在于, N路话机通过调节装 置与供电电源连接, 所述方法包括:
所述调节装置检测 N路话机中每路话机的工作状态, N为大于 1的整数; 所述调节装置根据预置的映射关系确定所述每路话机的工作状态对应的 需求电压;
所述调节装置将 N个所述需求电压中最大的电压值作为目标电压, 并指示 所述供电电源将输出电压调节为所述目标电压;
所述调节装置根据所述目标电压将每路话机上承载电压调节为与其工作 状态对应的需求电压。
2、 如权利要求 1所述的方法, 其特征在于, 话机的工作状态包括: 摘机状 态、 挂机状态或振铃状态。
3、 如权利要求 1或 2所述的方法, 其特征在于, 所述供电电源为开关电源, 所述指示所述供电电源将输出电压调节为所述目标电压的步骤包括:
所述调节装置向所述供电电源发送脉沖宽度调制 PWM信号, 以使所述供 电电源根据所述 PWM信号将输出电压调节为所述目标电压。
4、 如权利要求 1至 3任意一项所述的方法, 其特征在于, 所述调节装置根 据所述目标电压将每路话机上承载电压调节为与话机的工作状态对应的需求 电压的步骤包括:
若检测到处于摘机状态的话机进行拨号时,所述调节装置向所述处于摘机 状态的话机的 Tip线输入第一电压信号, 及向所述处于摘机状态的话机的 Ring 线输入第二电压信号; 其中, 所述第一电压信号和所述第二电压信号的相位相 反且幅度相等。
5、 如权利要求 1至 4任意一项所述的方法, 其特征在于, 还包括: 所述调节装置检测自身内部的温度;
若所述温度超过预置温度阈值,所述调节装置将每路话机的承载电压调节 为零。
6、 一种话机上承载电压的调节装置, 其特征在于, 包括:
检测模块, 用于检测 N路话机中每路话机的工作状态, N为大于 1的整数; 查询模块,用于根据预置的映射关系确定所述每路话机的工作状态对应的 需求电压;
指示模块, 用于将 N个所述需求电压中最大的电压值作为目标电压, 并指 示供电电源将输出电压调节为所述目标电压;
调节模块,用于根据所述目标电压将每路话机上承载电压调节为与其工作 状态对应的需求电压。
7、 如权利要求 6所述的调节装置, 其特征在于, 话机的工作状态包括: 摘 机状态、 挂机状态或振铃状态。
8、 如权利要求 6或 7所述的调节装置, 其特征在于, 所述供电电源为开关 电源, 所述指示模块用于向所述供电电源发送脉沖宽度调制 PWM信号, 以使 所述供电电源根据所述 PWM信号将输出电压调节为所述目标电压。
9、 如权利要求 6至 8任意一项所述的调节装置, 其特征在于, 所述调节模 块用于若检测到处于摘机状态的话机进行拨号时,向所述处于摘机状态的话机 的 Tip线输入第一电压信号, 及向所述处于摘机状态的话机的 Ring线输入第二 电压信号; 其中, 所述第一电压信号和所述第二电压信号的相位相反且幅度相 等。
10、 如权利要求 6至 9任意一种所述的调节装置, 其特征在于, 还包括: 过温保护模块,用于检测自身内部的温度;若所述温度超过预置温度阈值, 将每路话机的承载电压调节为零。
11、 一种话机上承载电压的调节装置, 其特征在于, 包括至少一个处理器 和至少一个存储器,所述存储器中存储一组程序代码, 所述处理器调用所述存 储器中存储的程序代码, 用于执行以下操作:
检测 N路话机中每路话机的工作状态, N为大于 1的整数;
根据预置的映射关系确定所述每路话机的工作状态对应的需求电压; 将 N个所述需求电压中最大的电压值作为目标电压, 并指示供电电源将输 出电压调节为所述目标电压;
根据所述目标电压将每路话机上承载电压调节为与其工作状态对应的需 求电压。
12、 如权利要求 11所述的调节装置, 其特征在于, 话机的工作状态包括: 摘机状态、 挂机状态或振铃状态。
13、 如权利要求 11或 12所述的调节装置, 其特征在于, 所述供电电源为开 关电源,所述处理器执行所述指示所述供电电源将输出电压调节为所述目标电 压的步骤包括:
所述处理器向所述供电电源发送脉沖宽度调制 PWM信号, 以使所述供电 电源根据所述 PWM信号将输出电压调节为所述目标电压。
14、 如权利要求 11至 13任意一项所述的调节装置, 其特征在于, 所述处理 器执行所述根据所述目标电压将每路话机上承载电压调节为与话机的工作状 态对应的需求电压的步骤包括:
若检测到处于摘机状态的话机进行拨号时,所述处理器向所述处于摘机状 态的话机的 Tip线输入第一电压信号, 及向所述处于摘机状态的话机的 Ring线 输入第二电压信号; 其中, 所述第一电压信号和所述第二电压信号的相位相反 且幅度相等。
15、 如权利要求 11至 14任意一项所述的调节装置, 其特征在于, 所述处理 还用于执行:
检测自身内部的温度; 若所述温度超过预置温度阈值, 将每路话机的承载电压调节为零。
16、 一种 POTS通信系统, 其特征在于, 包括至少一路话机和如权利要求-15任意一项所述的调节装置, 所述话机通过所述调节装置与供电电源连接。
PCT/CN2013/091208 2013-12-31 2013-12-31 一种话机上承载电压的调节方法、装置及系统 WO2015100659A1 (zh)

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