JP2014204288A - Information communication terminal device deterioration status determination system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a function to determine the deterioration status of an information communication terminal device.SOLUTION: The invention is an information communication terminal device deterioration status determination system that comprises an AC adapter, an information communication terminal device electrically connected with a DC terminal of the AC adapter, and a communication device connected with the information communication terminal device and monitoring the status of the information communication terminal device. The AC adapter comprises: a calculation unit that measures voltage and current at the DC terminal of the AC adapter and calculates a relational expression of voltage and current from the measured voltage and current; and an information transfer unit that transfers the calculated relational expression of voltage and current and an ID of the information communication terminal device to the communication device. The communication device comprises: a comparison unit that extracts a predetermined relational expression of voltage and current corresponding to the transferred ID of the information communication terminal device from a storage, compares the extracted relational expression with the transferred relational expression, and generates a comparison result; and a second display unit for displaying the comparison result.

Description

  The present invention relates to a degradation status determination system that determines a degradation status of an information communication terminal device.

  In recent years, with the progress of the information society, one or more information communication terminal devices are installed in many ordinary houses and offices. The information communication terminal device refers to, for example, an ONU (Optical Network Unit) or an ADSL (Asymmetric Digital Subscriber Line) modem. The information communication terminal apparatus has a lifetime due to deterioration of internal elements of the information communication terminal apparatus, and needs to be replaced as needed before the lifetime comes.

  The expected life of the information communication terminal device is calculated from the specifications of the internal elements when designing the information communication terminal device. However, the deterioration of the internal elements of the information communication terminal apparatus becomes severe or moderate depending on the actual use situation of the information communication terminal apparatus. Accordingly, the deterioration of the internal elements of the information communication terminal apparatus is difficult to accurately grasp, and the deterioration state of the information communication terminal apparatus is not clearly understood.

  The internal element of the information communication terminal device is composed of, for example, a rectifying aluminum electrolytic capacitor, and the deterioration of the aluminum electrolytic capacitor is directly related to the deterioration of the information communication terminal device.

  The deterioration of the aluminum electrolytic capacitor starts from the time when the aluminum electrolytic capacitor is manufactured. Further, the deterioration of the aluminum electrolytic capacitor occurs when the impregnated electrolytic solution permeates the sealing rubber and the internal electrolytic solution evaporates with time. Due to the deterioration of the aluminum electrolytic capacitor, the capacitance of the aluminum electrolytic capacitor decreases and the loss angle tangent increases. The life of the aluminum electrolytic capacitor is defined as reaching the life when the capacitance or loss tangent of the aluminum electrolytic capacitor deviates from the standard value.

  The life of an aluminum electrolytic capacitor is greatly affected by the usage conditions of the aluminum electrolytic capacitor. When used in a normal smoothing circuit, heat generation due to temperature and ripple current is a factor that greatly determines the lifetime. Further, in applications where high humidity and vibration are continuously applied, and applications where charging and discharging are frequently performed, it is necessary to consider the durability under the use conditions of the aluminum electrolytic capacitor (see Non-Patent Document 1).

“Technical note: How to use aluminum electrolytic capacitors well”, Nippon Chemi-Con Corporation, http://www.chemi-con.co.jp/catalog/pdf/al-j/al-sepa-j/001-guide/al -technote-j-110201.pdf

  Information communication terminal devices are often rented to users from ISPs (Internet Service Providers) and are utilized after being rented back. However, under the present circumstances, because the deterioration status of the information communication terminal device is not clearly understood, it has been decided to use the information communication terminal device uniformly based on the date of use of the information communication terminal device. Therefore, there has been a problem that an information communication terminal device that can still be used is discarded or an information communication terminal device that has been deteriorated is used.

  In addition, the information communication terminal device that has been rented deteriorates rapidly, and the information communication terminal device stops operating earlier than the expected life, resulting in a problem of service interruption.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a function of determining a deterioration state of an information communication terminal device.

As means for solving the above-mentioned problems, the present invention provides information communication as a criterion for determining the deterioration state of an internal element (for example, an aluminum electrolytic capacitor) of an information communication terminal device in order to determine the deterioration state of the information communication terminal device. Pay attention to the overcurrent protection function of the terminal device. FIG. 1 shows an example of current-voltage characteristics (IV characteristics, voltage / current relational expression) during overcurrent protection. The rated current (I ₁ ) is a current that is normally supplied to the information communication terminal device whose degradation status is to be determined. The overcurrent protection setting current (I ₂ ) is a current that is greater than the rated current (I ₁ ). This is a current having a high value and is a reference current for the overcurrent protection function to operate. The short-circuit current (I ₃ ) is a current that is generated when the overcurrent protection setting current (I ₂ ) is limited after the overcurrent protection function is activated. When the current becomes the overcurrent protection set current (I ₂ ) at a constant voltage, the voltage / current is limited to the short-circuit current (I ₃ ). Since the impedance of each internal element changes due to deterioration of the internal element, it is conceivable that the IV characteristics of the entire device when an overcurrent is applied change. Therefore, an IV characteristic when an overcurrent is applied to the information communication terminal apparatus is calculated as appropriate and compared with a predetermined IV characteristic. The predetermined IV characteristic refers to, for example, an IV characteristic calculated at the time of development for each model of the information communication terminal device. The calculated magnitude of the difference between the IV characteristic when the overcurrent is applied to the information communication terminal apparatus and the predetermined IV characteristic is used as a criterion for judging the deterioration of the information communication terminal apparatus. As a part for measuring the voltage and current necessary for calculating the IV characteristic, a measurement point is provided in the AC adapter near the information communication terminal apparatus, which is electrically connected to the information communication terminal apparatus.

  As a means for solving the above problems, the present invention measures the voltage / current from the AC adapter side through the DC power supply line to calculate the IV characteristic of the information communication terminal device, The information is transmitted to the communication center via the information communication terminal device, and the calculated IV characteristic is compared with a predetermined IV characteristic of the information communication terminal device.

  In order to achieve such an object, the present invention provides an AC adapter, an information communication terminal device electrically connected to a DC terminal of the AC adapter, and the information communication terminal. A communication device connected to a device and monitoring a status of the information communication terminal device, wherein the AC adapter is a voltage / voltage of the DC terminal of the AC adapter. A current measuring unit that calculates a relational expression of voltage / current from the measured voltage / current, and transfers the calculated relational expression of voltage / current and the ID of the information communication terminal device to the communication apparatus; An information transfer unit, wherein the communication device extracts a predetermined voltage / current relational expression corresponding to the transferred ID of the information communication terminal device from a storage unit, and extracts the predetermined voltage / current of the extracted Relationship Wherein comparing the relation of the transfer voltage and current, a comparator for generating a comparison result, characterized by comprising a second display unit for displaying the comparison result.

  As described above, according to the present invention, it is easy to grasp the deterioration state of the information communication terminal device. Therefore, the information communication terminal device that can withstand utilization after rental back is not discarded or the information communication terminal device whose deterioration is advanced is not utilized, and the cost of the information communication terminal device is improved. Further, according to the present invention, even when the rented information communication terminal device is deteriorating, it is possible to update the information communication terminal device in advance in the communication center by displaying an alarm. Therefore, the service is not interrupted due to a sudden stop of the information communication terminal device, and the reliability of the information communication service is improved.

It is a figure which shows the example of the IV characteristic in the overcurrent protection concerning one Embodiment of this invention. It is a block diagram which shows the degradation condition determination system of the information communication terminal device concerning one Embodiment of this invention. It is a flowchart which shows the method of determining the degradation condition of the information communication terminal device concerning one Embodiment of this invention. It is a figure which shows the example of a network concerning one Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 2 is a block diagram showing a degradation status determination system for an information communication terminal device according to an embodiment of the present invention. An AC adapter 1 to which an AC power supply line for supplying AC power from an AC power supply is connected is connected to a user-side information communication terminal device 2 by a DC power supply line. The information communication terminal device 2 is connected to a communication NW (Network) 3 via a communication line, and the communication NW 3 is connected to a communication center (communication device) 4 on the ISP side via a communication line.

  The AC adapter 1 supplies DC power to the information communication terminal device 2. The AC adapter 1 has a switching power supply configuration, the first rectification unit 101 rectifies the supplied AC power, and the SW (Switch) unit 102 controls ON / OFF of the rectified power. The driver 103 drives the SW unit 102, and the transformer unit 104 transforms the power that is ON / OFF controlled. Then, the second rectification unit 105 converts the transformed power into DC power.

  In the information communication terminal device 2, the power supply circuit 201 is connected to a DC power supply line that supplies DC power from the AC adapter 1, and the information communication unit 202 exchanges information with the communication center 4. The power supply circuit 201 incorporates an overcurrent protection function. An aluminum electrolytic capacitor can be used as an internal element of the power supply circuit 201. The communication NW 3 is connected between the information communication terminal device 2 and the communication center 4 by a communication line. In the communication center 4, the information processing unit 401 receives information transmitted from the information communication terminal device 2.

  A degradation status determination system for an information communication terminal device 2 according to an embodiment of the present invention includes a calculation unit 11 that calculates an IV characteristic (voltage / current relational expression) from a voltage / current of a DC terminal of an AC adapter 1, and a calculation A determination unit 41 that determines the deterioration status of the information communication terminal device 2 by comparing the IV characteristic thus obtained with a predetermined IV characteristic stored in advance, and a warning display unit 21 that receives and displays the determined result. Including.

  In FIG. 2, the AC adapter 1 further includes a calculation unit 11, the information communication terminal device 2 further includes a warning display unit 21, and the communication center 4 further includes a determination unit 41.

The calculation unit 11 causes the IV characteristic calculation unit 111 to flow a current equal to or higher than the overcurrent protection set current larger than the rated current I ₁ supplied from the AC adapter 1 to the information communication terminal device 2 to the first control unit 112. The IV characteristic calculation unit 111 that transmits the instruction command and the instruction command for flowing a current equal to or higher than the overcurrent protection set current are received, and the first rectifier 101 is adjusted so as to flow a current equal to or higher than the overcurrent protection set current. A first control unit 112; a voltage / current probe 113 for measuring a voltage applied to the DC power supply line during overcurrent protection and a current flowing through the DC power supply line; and a coil 114 connected to one of the DC power supply lines. The coil 115 connected to the other of the DC power supply lines, the AD conversion circuit 116 that inputs the output of the voltage / current probe 113, and the IV that calculates the IV characteristics from the signal output from the AD conversion circuit 116 And an information transfer unit 117 that transfers the calculated IV characteristic information and the ID (eg, serial number) of the information communication terminal device 2 to the communication center 4 via the information communication terminal device 2. . The IV characteristic information can be, for example, current / voltage time measurement values in CSV format. Note that the SW unit 102 and the transformer unit 104 may be the place where an instruction command for flowing a current equal to or higher than the overcurrent protection set current is received and adjusted so as to flow a current equal to or higher than the overcurrent protection set current.

  The warning display unit 21 is a second control unit 211 that receives the IV characteristic information calculated by the IV characteristic calculation unit 111 in the information communication terminal device 2 and the ID of the information communication terminal device 2. A second control unit 211 that receives the generated warning related to the deterioration status of the information communication terminal device 2 and a first display unit 212 that displays the warning related to the deterioration status of the information communication terminal device 2 are included.

  The determination unit 41 includes a third control unit 411 that receives the IV characteristic information calculated by the IV characteristic calculation unit 111 in the information communication terminal device 2 and the ID of the information communication terminal device 2, and the received information communication terminal device. A comparison unit 412 that compares a predetermined IV characteristic of the information communication terminal device 2 corresponding to the ID of 2 with the received IV characteristic, and a predetermined value of the information communication terminal device 2 corresponding to the ID of the information communication terminal device 2 A storage unit 413 that stores information on IV characteristics and a second display unit 414 that displays a warning based on the comparison result in the comparison unit 412 are included. The predetermined IV characteristic refers to, for example, an IV characteristic calculated at the time of development for each model of the information communication terminal device 2.

  Note that the storage unit 413 can also store information such as the address of the user who uses the information communication terminal device 2 and the previous IV characteristic calculation data.

  FIG. 3 is a flowchart showing a method for determining the deterioration status of the information communication terminal device according to the embodiment of the present invention.

  The AC adapter 1 converts AC power supplied from an AC power source into DC power, and supplies the converted DC power to the information communication terminal device 2 through a DC power supply line.

Voltage and current probes 113, when a current of the rated current I ₁ is greater than the overcurrent protection set current or of the current supplied from the AC adapter 1 to the information communication terminal device 2 (overcurrent is applied), the AC adapter 1 The voltage / current of the DC power supply line connected to the DC terminal is measured (S101).

  The I-V characteristic calculation unit 111 calculates the I-V characteristic of the information communication terminal device 2 based on the measured voltage / current (S102).

  The information transfer unit 117 performs the third control on the calculated IV characteristic and the ID of the information communication terminal device 2 via the second control unit 211, the information communication unit 202, and the communication NW3 of the information communication terminal device 2. It transmits to the part 411 (S103).

  Based on the received ID of the information communication terminal device 2, the comparison unit 412 extracts a predetermined IV characteristic of the information communication terminal device 2 corresponding to the information communication terminal device 2 from the storage unit 413 (S104).

  The comparison unit 412 compares the received IV characteristic with the predetermined IV characteristic of the information communication terminal device 2 and generates a comparison result assuming that the information communication terminal device 2 is at the end of its life if there is a certain difference or more. (S105).

  The second display unit 414 displays a warning based on the generated comparison result (S106).

  The third control unit 411 transmits warning information to the second control unit 211 (S107).

  The second control unit 211 receives the warning information, and the first display unit 212 displays a warning based on the received warning information (S108).

Below, the outline | summary of the degradation condition determination system of the information communication terminal device 2 is shown.
(1) The voltage / current measurement at the time of overcurrent application is performed by using the voltage / current probe 113 in order to measure the voltage between the two DC power supply lines to the information communication terminal device 2 and the change in the current of the one line. Used by inserting a voltage probe into two wires and a current probe into one wire. Coils 114 and 115 are inserted inside the AC adapter 1 from the measurement point of the DC power supply line to suppress the influence of impedance on the AC adapter 1 side during measurement.
(2) The IV characteristic calculation unit 111 of the AC adapter 1 transmits an instruction command to increase the DC output current to the first control unit 112 and applies a current equal to or higher than the rated current (I ₁ ) to the information communication terminal device 2. To do. And upon application of the rated current (I ₁₎ greater than the overcurrent protection set current (I ₂₎ or more current, the information communication terminal apparatus 2 operates the over current protection function, to limit the current. As shown in FIG. 1, when the overcurrent protection function operates, the current that is equal to or greater than the overcurrent protection set current (I ₂ ) is limited and decreases to a current value that is the magnitude of the short circuit current (I ₃ ). The voltage / current probe 113 measures the voltage between the two DC power supply lines and the change in the current of one line when the current is limited. The current measured by the current probe is converted into a voltage.
(3) The output of the voltage / current probe 113 is input to the AD conversion circuit 116. The AD conversion circuit 116 outputs a DC voltage according to the input level and sends it as an IV characteristic to the information transfer unit 117 of the AC adapter 1.
(4) The information transfer unit 117 of the AC adapter 1 receives the IV characteristic information and the ID of the information communication terminal device 2, and i) a DC feeder that electrically connects the AC adapter 1 and the divisional communication terminal device 2. Ii) Send to the second control unit 211 of the information communication terminal device 2 via a communication line wired separately from the DC power supply line, or iii) wirelessly.
(5) The second control unit 211 of the information communication terminal device 2 sends the IV characteristic information and the ID of the information communication terminal device 2 to the third control unit 411 of the communication center 4 via the communication NW3.
(6) The IV characteristic information transmitted to the third control unit 411 of the communication center 4 is information communication corresponding to the ID of the information communication terminal device 2 stored in the storage unit 413 of the communication center 4 by the comparison unit 412. It is compared with a predetermined IV characteristic of the terminal device 2. If the difference between the transmitted IV characteristic and the predetermined IV characteristic is greater than or equal to a preset numerical value, the second display unit 414 of the communication center 4 displays a warning. The warning is also transmitted to the second control unit 211 of the information communication terminal device 2 via the communication NW3, and the first display unit 212 displays the warning.
(7) The comparison result in the comparison unit 412 is stored as a history in the storage unit 413 of the communication center 4, and the comparison result history is used for grasping the deterioration status of the rented back information communication terminal device 2.

  As for the determination performed in the comparison unit 412, a warning level may be set according to the amount of difference between the transmitted I-V characteristic and a predetermined I-V characteristic.

  4A and 4B show network examples according to an embodiment of the present invention. As shown in FIG. 4A, a router 1003 connected to a PC 1002 is installed in a general house or office 1001, and an ONU 1004 that is an information communication terminal device is connected to the router 1003. The ONU 1004 is connected to an OLT (Optical Line Terminal) 1005 which is a communication device on the ISP side through FTTH (Fiber To The Home) which is a communication path. In one embodiment of the present invention, the ONU 1004 transmits the IV characteristics of the ONU 1004 to the OLT 1005. In one embodiment of the present invention, the OLT 1005 compares the transmitted I-V characteristic with a predetermined I-V characteristic to determine the deterioration of the ONU 1004.

  As shown in FIG. 4B, a wireless LAN router 2003 wirelessly connected to a PC 2002 is installed in a general house or office 2001, and an ONU 2004 that is an information communication terminal device is connected to the wireless LAN router 2003. . The ONU 2004 is connected to the OLT 2005, which is a communication device on the ISP side, through FTTH, which is a communication path. In one embodiment of the present invention, the ONU 2004 transmits the IV characteristics of the ONU 2004 to the OLT 2005. In one embodiment of the present invention, the OLT 2005 compares the transmitted I-V characteristic with a predetermined I-V characteristic to determine the deterioration of the ONU 2004.

  4A and 4B, ADSL and CATV may be used instead of FTTH, and a modem corresponding to ADSL and CATV may be used instead of ONU and OLT.

  The communication performed in one embodiment of the present invention can occur between the information communication terminal device and the nearest communication center for maintenance as an example. In addition, according to an embodiment of the present invention, when the maintenance person tests the overcurrent protection function of the information communication terminal device, the IV characteristic can be calculated. Communication performed in an embodiment of the present invention may use wireless communication or the Internet.

  According to this embodiment, it becomes easy to grasp the deterioration status of the information communication terminal device. Therefore, the information communication terminal device is not disposed of to withstand utilization after rental back, or the information communication terminal device whose deterioration is advanced is not utilized, and the cost of the information communication terminal device is improved. .

  Further, according to the present embodiment, even when the rented information communication terminal device is rapidly deteriorating, it is possible to update the information communication terminal device in advance in the communication center by displaying an alarm. Therefore, the service is not interrupted due to a sudden stop of the information communication terminal device, and the reliability of the information communication service is improved.

1 AC adapter 2 Information communication terminal device 3 Communication NW
4 Communication Center 11 Calculation Unit 21 Warning Display Unit 41 Determination Unit 101 First Rectification Unit 102 SW Unit 103 Driver 104 Transformer Unit 105 Second Rectification Unit 111 IV Characteristic Calculation Unit 112 First Control Unit 113 Voltage / Current Probe 114 115 Coil 116 AD conversion circuit 117 Information transfer unit 201 Power supply circuit 202 Information communication unit 211 Second control unit 212 First display unit 401 Information processing unit 411 Third control unit 412 Comparison unit 413 Storage unit 414 Second Display unit 1001, 2001 General house or office 1002, 2002 PC
1003 Router 1004, 2004 ONU
1005, 2005 OLT
2003 Wireless LAN router

Claims (3)

Information comprising: an AC adapter; an information communication terminal device electrically connected to the DC terminal of the AC adapter; and a communication device connected to the information communication terminal device and monitoring the status of the information communication terminal device A communication terminal device degradation status determination system,
The AC adapter is
A calculation unit for measuring a voltage / current of the DC terminal of the AC adapter and calculating a relational expression of the voltage / current from the measured voltage / current;
An information transfer unit that transfers the calculated voltage / current relational expression and the ID of the information communication terminal device to the communication device;
The communication device
A relational expression of a predetermined voltage / current corresponding to the transferred ID of the information communication terminal apparatus is extracted from a storage unit, and the relation between the extracted predetermined voltage / current relation and the transferred voltage / current is extracted. A comparison unit that compares an expression and generates a comparison result;
A degradation state determination system for an information communication terminal device, comprising: a second display unit that displays the comparison result.   The communication path between the AC adapter and the information communication terminal apparatus is a DC power supply line that electrically connects the DC terminal of the AC adapter and the information communication terminal apparatus, and the AC adapter separately from the DC power supply line. 2. The information communication terminal device degradation status determination system according to claim 1, wherein the system is any one of a communication line and a radio provided between the information communication terminal device and the information communication terminal device. The communication device
A control unit for transferring the comparison result to the information communication terminal device;
The information communication terminal device
The deterioration state determination system for the information communication terminal device according to claim 1, further comprising a first display unit that displays the transferred comparison result.

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