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SIM card, method and device for detecting temperature of SIM card

A temperature detection device and detection method technology, applied in the direction of measuring devices, thermometers, thermometer parts, etc., can solve problems affecting product usability, unable to detect SIM card temperature, affecting SIM card stability and usability, etc.

Active Publication Date: 2010-03-31
HUAWEI DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] An increase in the temperature of the mobile phone will lead to an increase in the temperature of the SIM card, thereby affecting the stability of the SIM card
The ISO / IEC 7816 series of standards stipulate that the heat dissipation of the integrated circuit in the SIM card should not exceed 2.5W, and the surface temperature of the card should not exceed 50 degrees under any environmental conditions; the 3GPP series of standards stipulate that the normal temperature range of the SIM card is from -25 degrees to 70 degrees. The maximum temperature is 85 degrees, and the temperature of the card cannot exceed 85 degrees for 4 hours or more than 100 times during the entire life cycle of the card. It can be seen that the temperature of the SIM card exceeding the standard will affect the stability and usability of the SIM card. , thereby affecting the usability of the product
[0005] However, the SIM card in the prior art cannot detect the temperature of the SIM card, which affects the stability of the SIM card.

Method used

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  • SIM card, method and device for detecting temperature of SIM card

Examples

Experimental program
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Effect test

Embodiment 1

[0027] figure 2 It is a flow chart of the temperature detection method of the SIM card in the embodiment of the present invention. The method comprises the following steps: detecting the SIM card temperature in the mobile communication terminal, generating SIM card temperature data 201; comparing the SIM card temperature data with a preset temperature threshold, when the SIM card temperature data When the temperature is higher than the preset temperature threshold, a SIM card over-temperature alarm 202 is performed.

[0028] Beneficial effects of the embodiment of the present invention: Since the temperature sensing IC is added to the internal structure of the original SIM card, the problem that the existing SIM card technical solution has no temperature signal detection function and cannot meet the temperature stability design requirements of product miniaturization is overcome. And when it detects that the temperature exceeds the allowable temperature range, an over-temper...

Embodiment 2

[0032] image 3 It is a diagram of a SIM card temperature detection device according to an embodiment of the present invention. The devices include:

[0033] The temperature detection unit is used to detect the temperature of the SIM card in the mobile communication terminal to generate the temperature data of the SIM card; the temperature comparison unit is used to compare the temperature data of the SIM card with a preset temperature threshold; the alarm unit, When the temperature data of the SIM card is higher than the preset temperature threshold, a SIM card over-temperature alarm is issued. The temperature detection device may be placed inside the SIM card, or outside the SIM card and inside the mobile terminal where the SIM card is located.

[0034] Beneficial effects of the embodiment of the present invention: Since the temperature sensing IC is added to the internal structure of the original SIM card, the problem that the existing SIM card technical solution has no t...

Embodiment 3

[0036] Figure 4 It is a distribution diagram of the metal contacts of the SIM card according to the embodiment of the present invention. The SIM card connects the logic circuit in the card and the mobile terminal through the copper interface on the card surface. The SIM card chip has 8 metal contacts, and usually 6 metal contacts are needed to connect with the mobile phone. The embodiment of the present invention adds 1 The metal contacts are connected with the mobile phone, such as Figure 4 Shown: SIM card metal contact definition: serial data input / output (I / O) 401, programming voltage input (VPP) 402 (choose according to different cards), reference ground 403 (GND), power input ( VCC) 404, reset signal input (RST) 405, clock signal input (CLK) 406, and temperature data output 407.

[0037] The SIM card of Embodiment 3 of the present invention includes: a temperature sensing unit for detecting the temperature of the SIM card and generating SIM card temperature data; a te...

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Abstract

The invention provides an SIM card, a method and a device for detecting the temperature of the SIM card. The device comprises a temperature detecting unit, a temperature comparing unit and an alarmingunit, wherein the temperature detecting unit is used for detecting the temperature of the SIM card in a mobile communication terminal to generate SIM card temperature data; the temperature comparingunit is used for comparing the SIM card temperature data with a preset temperature threshold value; and the alarming unit is used for carrying out an SIM card over-temperature alarm when the SIM cardtemperature data is higher than the preset temperature threshold value. When the detected temperature exceeds the range of allowable temperature, the SIM card is turned off in time or the alarm is sent out for prompt, so that the poor contact, deformation, damage and abnormal work of the SIM card caused by the expansion of the clamp spring of the SIM card with high temperature of the working environment of the mobile communication terminal are prevented, at the same time, the risk of losing information in the SIM card can be avoided.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a method and device for detecting the temperature of a SIM card, and a SIM card. Background technique [0002] With the development of wireless communication technology, mobile phones are more and more widely used. With the continuous innovation of mobile phone functions, more and more functions are integrated into mobile phones. When implementing these functions, a large amount of data needs to be processed, and a large number of chipsets need to be placed in the mobile phone. At the same time, the microprocessor (CPU) and chip The team's work efficiency has also been continuously improved. [0003] With the increase of chipsets and the acceleration of clock frequency, the heat generated by mobile phones is also gradually increasing; at the same time, due to the development of mobile phones in the direction of light, thin and small, in a limited space, when the mobile phon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K1/02H04M1/24G01K13/00H04M1/725
Inventor 景丰华陈晓红
Owner HUAWEI DEVICE CO LTD
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