JPH0843425A - Portable electronic device - Google Patents

Abstract

PURPOSE:To make possible detection of impct or vibration caused by usage, preservation, or transportation, decision of usability of a device based on the detection result, reporting based on the decision, and stoppage of device operation, etc. CONSTITUTION:An output from at least one of impact detection parts 11a-11n of a strain gauge, etc., which is provided on the surface or at a corner of an electronic device 10, and the impact specification value of a device which is previously set, are compared with each other, and analyzed at an operation environment decision part 12. When it is decided that it can not be used, a device control part 13 which received a decision output signal (a) makes an environment display part 15 display 'not in operation environment,' and further, stops each function part 14a-14m. And, the result of the decision is recorded in a storage part 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable electronic device having a shockproof specification as an environmental condition for use, storage and transportation.

[0002]

2. Description of the Related Art Conventionally, in this type of portable electronic equipment, in order to guarantee the function, performance and life of the equipment, the allowable operating environment range and storage / transportation environmental conditions of the portable electronic equipment are specified. It is specified as a shockproof specification.

[0003]

However, in the past, although the allowable environmental range of use and the storage / transportation environmental conditions of the portable electronic equipment have been specified as shock-resistant specifications, the user and the storage / transportation environment have been set. It is generally difficult for the parties concerned to confirm whether the impact is within the allowable operating environment range or storage / transportation environmental conditions, and operating under conditions other than the permissible environment or conditions may cause abnormal operation or characteristic deterioration of the device. There was a problem that it was often done.

Compared with office equipment generally used indoors, electronic equipment such as mobile phones and portable terminals (handy terminals), which are generally carried outdoors, have a permissible environment range and storage / transportation environment depending on the specifications of the equipment. Impact resistance is 20
Up to G, etc., and as precautions for handling, caution labels are affixed to the device, saying "Please handle the device carefully" and "Be careful not to drop it". However, in practice, they are often dropped during use, bumped into the corners of hard objects when carried, or thrown into the luggage of bicycles or motorcycles for transportation, which causes device failure. .

Further, due to the rough handling of electronic equipment, the internal printed circuit board is cracked and the insulation distance of high-voltage parts is shortened, causing smoke and fire accidents when used for a long time. .

Both the user and the manufacturer are convinced when it is possible to clearly determine the cause of the rough handling by the user from the failure phenomenon of the portable electronic device. For example, if it is a trouble phenomenon that the upper glass cover of the liquid crystal display of the portable electronic device is broken, the primary cause is assumed to be the user's drop or a hard object colliding with the upper glass cover. It can be judged that the person's handling is inadequate.

However, when it is not possible to clearly determine the cause of the rough handling by the user from the failure phenomenon of the portable electronic device, the cause cannot be identified. For example, if the printing function of the portable electronic device is an abnormal phenomenon, when the user holds the device,
If the printing paper feed mechanism is distorted due to the impact of somewhere, cracks occur in some of the wiring, and sometimes contact failure occurs and some printing is disturbed, the primary cause It is extremely difficult to determine that the user is inadequate in handling, and it is impossible to convince the user without evidence.

The present invention solves such a conventional problem, and the impact of the main part, which defines the allowable use environmental range, storage / transport environmental conditions, etc. as specifications, is the impact of the allowable environmental range. If there is no such information, the object is to provide a message to that effect and to provide a portable electronic device that allows the use of the device to be stopped.

[0009]

In order to achieve the above-mentioned object, the present invention provides a detecting means for detecting at least one of impact or strain force provided in the device, and at least one of impact or strain force to the device. The automatic recording of the availability of the device by comparing and analyzing the impact specification value set according to the allowable operating environment range of the device and the storage / transportation environmental conditions and the output from the detection means. And a display means for automatically displaying the fact that it is determined that the device cannot be used, or a notification means for generating a warning sound or a comment for a warning, and the corresponding function of the device or a related function. A stop means for automatically stopping the function is provided.

Further, a detection means provided in the apparatus for detecting at least one of impact and strain force, a recording means for automatically recording at least one of impact and strain force for the apparatus, and a permissible environment range and storage of the apparatus・ The judgment value set by the transportation environment conditions and the output from the detection means are compared and analyzed, and the judgment means for automatically judging the availability of the device and the judgment means exceed the first judgment value. And an informing means for informing the user of caution when it is determined that
When the judging means judges that the value exceeds the second judgment value, the notifying means notifies the user that the device cannot be used and the device is stopped.

Further, it is characterized in that it is provided with means for deciding that the portion judged to be unusable can be reused, and means for automatically canceling the stop of the corresponding function of the apparatus or the related function.

Further, the detecting means is a strain gauge provided on the surface or corner of the device for detecting the strain force.

Further, the detecting means is a film for pressure measurement provided on the surface or corner of the device for detecting the strain force.

Further, the detecting means is a pressure conductive rubber provided on the surface or corner of the device for detecting the strain force.

Further, the detecting means amplifies the vibration amplitude of the output voltage detected by the vibration energy sensor for detecting the vibration strain force, the output voltage detected by the vibration energy sensor, squares this and outputs a smoothed electric signal. It is characterized in that it is configured by means for.

Further, the detecting means is a semiconductor thin film magnetoresistive element type displacement sensor for detecting a vibration strain force, and amplifies the amplitude of vibration of the output voltage detected by the semiconductor thin film magnetoresistive element type displacement sensor, and outputs it as an analog signal. / Digital signal conversion and output means.

Further, as the recording means, a means for automatically recording the accumulated fatigue level of the vibration strain with respect to the apparatus is provided.

Pressurization that detects at least one of impact force and strain force and color-displays the degree of impact corresponding to the impact specification value set according to the allowable operating environment range of the device, storage / transport environmental conditions, etc. The measuring film is attached to the surface or the corner of the device.

[0019]

In the portable electronic device having the above-mentioned structure according to the present invention, the impact and the strain force on the surface of the main body of the device and the vicinity thereof are detected, and it is judged from the detection output whether or not the device can be used. When it is determined, the fact is displayed and notified, and the operation of the device is stopped to prevent the device from being used or stored / transported in an inappropriate environment. In addition, the occurrence of a failure due to the use of the device as it is can be avoided in advance, so that the reliability of the device is improved and the life of the device is prevented from being shortened.

By implementing the control in two stages,
It enables to confirm the accumulated fatigue level of the vibration strain force that the device receives at an earlier stage in detail, rather than stopping the device by detecting at the stage, and the user can warn without continuing to operate the device as it is. Respond promptly according to the instructions, move the device avoiding continuous vibration, take actions such as applying a soft cover, and then, if the operating environment situation arises, normalize all functions in advance without failure. It can be held, and the durability and life of the device can be extended.

As the means for detecting the impact and strain force, a strain gauge, a film for pressure measurement, a pressure conductive rubber, a vibration energy sensor, a semiconductor thin film magnetoresistive element type displacement sensor and the like can be used.

By automatically recording the accumulated fatigue level of the vibration strain of the device, the recorded contents can be used to promote more reliable enlightenment in handling management and to make a more reliable judgment as to whether or not the device can be used. enable.

Further, by applying a pressure measuring film on the surface of the device and performing irreversible shock management detection that the shock and strain force on the surface of the device has reached a specific shock value,
Secure permanent record of impact and strain force, and when the device breaks down due to mishandling by the user, it is possible to confirm the evidence of the impact of the drop and to replace the film. It is possible to select an irreversible temperature control material according to the shock resistance specifications and purpose of use.

[0024]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic block diagram showing the structure of the first embodiment of the present invention, in which 10 is a portable electronic device and 11a-1.
Reference numeral 1n denotes a plurality of impact detection units, and the impact detection units 11a to 11n detect impacts on each surface of the portable electronic device 10 and in the vicinity thereof. Reference numeral 12 is an operation environment determination unit, which aggregates the impacts received on each surface of the portable electronic device 10 and in the vicinity thereof,
It is determined whether or not the portable electronic device 10 is in an operating environment, and the determination output signal a is output. A device control unit 13 controls each of the functional units 14a to 14m, and controls the display of the environment display unit 15 by the determination output signal a to notify the center device 16 of the environmental condition signal b of the terminal device.
Send

It is also possible to provide a notifying means for generating and notifying an alarm sound by the judgment output signal a if necessary. Further, if the detected value exceeds the specification value and is dangerous for the maintenance of the device, the means for automatically stopping the main part of the device is controlled by the judgment output signal a or the environmental condition signal b to control the adverse environment or Means may be provided to protect the non-durable functional part against abusive users.

FIG. 2 is a block diagram showing a configuration relating to the display means and the notification means of the first embodiment, and the impact detection parts 11a to 11n.
The signal related to the shock detected by is sent to the analog / digital converters (A / D converters) 101a to 101n and converted into respective digital shock data, and the numerical values are read as address data in the read only memory ( ROM) 102. The ROM 102 is addressed by the output of the A / D conversion unit 101 and has areas Ma to Mn for storing impact data on each surface and the vicinity of each surface and an area Mo for storing comments. The impact data read from the ROM 102 is sent to the character generator 103, and the contents thereof are converted into data for dot display on the matrix display unit 104 which is the environment display unit 15, and then read into the latch 105. The data read by the latch 105 is sequentially written in the random access memory (RAM) 106, and the content of the RAM 106 is sent to the display driver 107, converted into display data and displayed on the matrix display unit 104. The impact data read from the ROM 102 is the control unit 1
Enter in 08.

The control unit 108 controls each function such as outputting an operation command signal to the character generator 103 and the latch 105 and a display switching signal to the display driver 107 based on the key input signal from the key input unit 109. Output the command signal.

The comment data calling unit 110 includes a control unit 108.
The comment data is sent to the area Mo of the ROM 102 as address data, and the comment data stored in the designated address area is called and supplied to the digital / analog converter (D / A converter) 111. The D / A converter 111 converts the comment data read from the ROM 102 into an analog audio signal and sends it to the speaker 113 via the amplifier 112 to generate a warning sound.

Next, the operation of the first embodiment will be described with reference to the flowchart of FIG. First, the matrix display unit 104 and the speaker 113 are reset to the initial state (S1-
1) When one of the impact detection units 11a to 11n (referred to as A) installed on each surface of the portable electronic device 10 and in the vicinity of the portable electronic device 10 detects a detection result which is not within the allowable operating environment range of the device (S).
1-2, NO in S1-3), the operation environment determination unit 12 outputs a determination output signal a indicating that it is not the use environment condition from the detection result to the device control unit 13
Send to. The device control unit 13 indicates to the environment display unit 15 such as "Please use with a soft protective cover", "Please put a protective cover", "Be careful with handling", "Caution falling", etc. Is displayed, and a warning sound is generated when the power of the device is turned on by the judgment output signal a to notify (S1-
4), recommend to users and persons concerned with storage and transportation (S1-5).

Since it is possible to recognize that an abnormal physical stress is applied to any part of the device (the above-mentioned part A, etc.) and it is possible to detect the treatment for protecting the part A, for example, the release of the stress ( S1-6), the impact detection part 11a of the corresponding part
By detection at ~ 11n (S1-7), the stress is released and A
When it is determined that the functions of the parts have been restored (YES in S1-8), the display and warning sound disappear (S1-9). However, if the function of the part A is not restored (NO in S1-8), a command for maintenance is transmitted to each of the function parts 14a to 14m such as stopping the operation function (S1-1).
0).

By providing the storage unit 17 and recording the environmental condition signal b (S1-11), it is possible to transmit the progress of the environmental condition of the terminal device to the center device 16 (S1-13). Moreover, the memory data of the shock in the storage unit 17 can be utilized as evidence of the shock application due to rough handling by the user. The environmental condition signal b includes the detection result of each of the impact detection units 11a to 11n and the date and time. The processing based on the detection of the impact detection units 11a to 11n described above is repeated (S1-12).

By doing so, it is possible to prevent the use, storage and transportation of the device in an inappropriate environment,
It is possible to prevent in advance the occurrence of a failure due to the use of the device as it is, and prevent the reliability of the device from improving and the life of the device from decreasing.

In general, compared to office equipment used indoors, in a portable electronic device that is carried outdoors, such as a mobile phone or a handheld terminal (handy terminal), when a hand slips and drops it, hang it down. It may hit the surroundings or throw it on the bed. Even in that case, the impact detection units 11a to 11n provided on the exterior of the device detect this, display that the device is unusable, emit a warning sound, and stop the operation of the device. As a result, it is possible to prevent a failure caused by continuing the operation of the device as it is. At the same time, the user can be warned to avoid a state of rough handling.

Steps (S1-6) of the above flowchart
As shown in (S1-10), after the unusable message is displayed, the device or a part of the function to stop the function is controlled to protect the functional part which is not durable against a bad environment, thereby causing a fatal failure. If it is confirmed that the function can be avoided in advance and that there is no support for the function, or if after repairing it returns to an environment without abnormal physical stress where all parts can be used, the impact detection parts 11a to 11n
When this is detected, the device control unit 13 erases the non-use display of the environment display unit 15 and cancels the stop command sent to each of the function units 14a to 14m.

As described above, according to the above-described embodiment, when the impact environment in which the portable electronic device 10 is used exceeds the allowable value, the output from the detecting means is compared and analyzed to use the device. Whether to accept or reject is automatically determined. Then, when it is determined that the corresponding function of the device is unusable, the fact is automatically displayed on the environment display unit 15 and a warning sound is given, and the operation of each of the function units 14a to 14m is stopped, so that it is portable. It is possible to prevent the electronic equipment device 10 from being used in an unsuitable environment, and to prevent a failure that occurs when the operation is continued as it is.

Further, according to the above-mentioned embodiment, it is possible to use the environmental condition signal b to control the equipment for keeping the ambient environmental condition of the impact main component in the specified environment.

Further, in the above-mentioned embodiment, it is possible to provide a shock detecting portion in an attached portion of the device such as the cover case of the device.

In addition, in the above-mentioned embodiment, each impact detection unit
If the detection results of 11a to 11n are displayed on the environment display unit 15 so that it can be known which part of the portable electronic device 10 exceeds the allowable value, repair and recovery of that part can be easily performed. be able to.

Although the device is designed to withstand a certain amount of shock, the shock resistance is limited, and it is important to maintain the durability of the function of the device with the cooperation of the person who handles the device. . The present invention is highly effective in encouraging people who handle such devices.

Next, a second embodiment of the present invention will be described. The second embodiment is characterized in that the surface of the device is provided with means for detecting the strain on the surface of the device and displaying the detection result, and the device for notifying the display message of enlightenment can recognize the availability of the device. To do. FIG. 4 is a perspective view showing the external appearance of the portable electronic device of the second embodiment. In this second embodiment, the impact detection unit 11 of the first embodiment is used.
In the case where the strain detecting unit (described later) is provided in place of a to 11n (other configurations are the same as in the first embodiment, detailed description thereof will be omitted), and the purpose of use environment detection is the first embodiment. Is a shock, and in the case of the second embodiment, it is a distortion, and further, the action of the corresponding process is instructed by a display message, which is a difference.

In FIG. 4, 20 is the main body of the apparatus, 21 is a keyboard, 22 is a display / touch panel section, 23 is a roll cover for covering the recording paper roll, and 24 is strain detection provided outside each of the sections 20-23. Section (this strain detector 24
Is the same as the installation location of the impact detection units 11a to 11n of the first embodiment).

In the second embodiment, the strain detecting section 24 is provided in the vicinity of a portion vulnerable to vibration of the apparatus or a portion having low durability against strain to detect the strain, and the detection result is displayed on the display unit as an enlightenment display message. Information is displayed on the touch panel unit 22. Not only detecting the distortion of the usage environment and displaying the numerical value, quantity and color, but also showing the display message of the enlightenment related to the detection result with a pattern or illustration to further warn the user. It is a stimulus. Further, by instructing the action of the handling process by the display message, there is an effect that the user takes a concrete defensive action and avoids a failure caused by continuing the operation of the device as it is.

Further, it is difficult for the user to understand the meaning of the vibration frequency or the value of the vibration distortion simply by detecting the distortion of the use environment and displaying the numerical value, the quantity, and the color, and the processing outside the specification can be handled. It is hard to expect to do. Conventionally, an electronic device has been proposed that is provided with a means for detecting strain, etc., but it is possible to judge whether the detected strain is acceptable or not for environmental specifications such as the allowable environmental range of use of the device and the storage / transport environmental conditions. It is not realistic to do so, and generally, few users use the device with the specifications in mind. Furthermore, it is impossible to expect the user to take a defensive action outside the permissible environment simply by displaying the detected strain on the device.

FIG. 5 is a structural diagram of the strain detector.
The strain detector 24 uses the effect of changing the electrical resistance value in the strain gauge due to strain on the device, strain, and dimensional change. The resistance value R of the metal resistor expands and contracts due to external force, and becomes thin or thin. Becomes

[0046]

[Outside 1]

The rate of change of the resistance value is given by the equation (1).

[0048]

[Equation 1]

As shown in FIG. 5, a thin plate base 25 of an electrical insulator is used.
Fix the metal resistance wire 26 or resistance foil on it with an adhesive. The lead wire 27 is welded or soldered to the end of the copper-nickel alloy metal resistor, and is led to the detection circuit. A resistance change proportional to the strain is detected as a voltage change by configuring a bridge circuit.

In general, compared to office equipment used indoors, in electronic equipment such as mobile phones and portable terminals (handy terminals) that are carried outdoors, there may be a case where the equipment is damaged due to vibration distortion. Also, due to rough handling of electronic equipment, distortion may occur and the internal printed circuit board may crack, or the insulation distance of high-voltage parts may be shortened, causing smoke and fire accidents when used for a long time. In some cases.

In such a case, in the second embodiment, when the strain is applied, the strain detecting unit 24 provided on the exterior of the device detects this and displays the device unusable, and emits a warning sound. , The operation of the device will be stopped.

Next, the operation of the second embodiment will be described.
As shown in the flowchart of FIG. 6 (the steps (S1-1) to (S1-12) of the flowchart of FIG. 3 and the steps of FIG. 6)
(S2-1) to (S2-12) correspond to each other), except that the detection data is not an impact but a strain, which is the same as the first embodiment and a detailed description is omitted. If even one of the installed strain detectors or one of the strain detectors 24 detects a detection result that is not within the allowable operating environment range of the device, "Please check the device" on the display / touch panel 22.
"Please put on a protective cover", "Be careful when handling." It displays a message such as "Be careful of vibration!" And recommends it to users and those involved in storage and transportation. It also controls the maintenance by sending a command for maintenance such as stopping the operation function. In addition, a warning sound is generated and an enlightenment message is given.

As is apparent from the second embodiment, means for detecting strain on the surface of the portable electronic device and displaying the detection result is provided on the surface of the device, and an enlightenment display message is issued. Whether or not the device can be used can be easily recognized by the means. As a result, it is possible to prevent an accident such as a failure or smoke ignition caused by continuing the operation of the device as it is. At the same time, the user can be warned to avoid a state of rough handling. By providing the strain detection discrimination display in the vicinity of the relevant portion, the effect of making the user or the carrier of the device recognize it is great. The effect of encouraging the user to take a defensive action outside the permissible environment is large.

Next, a third embodiment of the present invention will be described. In the third embodiment, as a means for detecting the strain force, a film-like pressure measuring member or pressure conductive rubber is provided on the surface or corner of the device, and means for notifying the display comment of enlightenment can be used or not. It is characterized by making the user recognize.

A case where a pressure conductive rubber is used as a means for detecting strain in the third embodiment will be described. The pressure conductive rubber is a combination of silicon rubber and metal particles. As shown in the characteristic graph of the pressure conductive rubber in Fig. 7, the resistance value changes from the insulation state (10 MΩ or more) to the conductive state by applying pressure.
It has a characteristic that it changes rapidly (several tens of Ω or less), and the characteristic peculiar to the elastomer as this switch material is used as a means for detecting the impact on the surface of the device. A specific example of the pressure conductive rubber is "pressure sensitive sheet" manufactured by Japan Synthetic Rubber Co., Ltd.

As shown in the explanatory view of the principle of the pressure conductive rubber of FIG. 8, the conduction mechanism of the dispersed conductive material such as the pressure conductive rubber 30 causes the conductive particles to directly contact in the rubber elastomer by applying pressure. Or, since conduction can be obtained only when the conduction path is formed within a few angstroms that are considered to be in electrical contact, the conduction path is formed even if the pressing direction is not only the vertical and horizontal directions but also the sheet surface direction. To be done.

Therefore, as shown in FIG. 9, electrodes 31a and 31b are provided on the upper and lower surfaces of the pressure conductive rubber 30, and one electrode 31b is joined to the apparatus body 20 of a resin case made of a non-conductive material. A protective sheet 32 made of a non-conductive material is provided on the other electrode 31a on the impact receiving side, and an electrode 33 is provided between the electrodes 31a and 31b.
And a detection signal output section 34 is provided between the electrodes 31a and 31b, or, as shown in FIG. 10, an electrode 35 is provided on the lower surface of the pressure conductive rubber 30 so that the pressure conductive rubber 30 A reinforcing member 36 made of a conductive material and a protective sheet 32 made of a non-conductive material are provided on the upper surface, and a single-sided electrode structure in which a power source 33 is connected to the electrode 35 and a detection signal output unit 34 is provided, or FIG. As described above, the pressure conductive rubber 30 may have a structure in which the vertical and horizontal combined electrodes 37 are provided on the lower surface, and the like, which serves as a means for detecting pressure (impact).

FIG. 12 shows a specific example of a detection circuit connected to the pressure conductive rubber 30 having the above structure. For the pressure conductive rubber 30, a setting resistor 40, an inverter 41, a switching transistor 42, and chattering are provided. Since the circuit consisting of the prevention circuit 43 is connected and the change point of the switch characteristic is abrupt, a hysteresis circuit that prevents the occurrence of chattering can be inserted in the output, or pressure conductive rubber of each rank characteristic can be connected in parallel. , And set a constant value in consideration of taking countermeasures according to the detection of impact force of each grade.

When the pressure conductive rubbers 30 are provided in the upper and lower resin cases of the apparatus main body 20, the protective sheet 32 such as a polyester film is used as a cushioning material to avoid excessive concentrated stress, and shock specification value (20 kg / Adjust the thickness structure so that it is detected at (cm ² or less).

Depending on the thickness or material of the protective sheet 32 and the reinforcing member 36, the strain force received by the inner pressure conductive rubber 30 itself is set to be detected with respect to the shock resistant specification value of the device, or a shock margin is set. Care should be taken to suit the application, such as how much to hold.

In the shape and function configuration of the portable electronic device, a surface for detecting impact resistance such as a print head portion of a printer, an input / output connection portion for optical communication, a panel portion for liquid crystal display, an antenna portion for transmission / reception. A pressure conductive rubber 30 for detecting the strain of each part is provided on or around it, and a pressure conductive rubber is provided on the upper and lower resin case parts and the side surface of the apparatus main body 20 to reinforce the impact resistance.

In the third embodiment, if the device breaks down because the user accidentally slips his / her hand and drops the device, the presence or absence of the drop impact can be confirmed at a glance. Even if the device does not break down in the above case, the display of the record of the drop impact has the effect of encouraging the user to be resistant to the drop impact of the device and to educate the user about handling and management of the device. Since it is possible to replace the pressure conductive rubber sheet, it is possible to select the impact resistant material according to the impact resistant specifications and the purpose of use and design the strength. Providing a pressure conductive rubber sheet on the surface or corner of the device serves as a cushioning function and a non-slip function.

Further, by using the pressure conductive rubber instead of the impact detecting portion of the first embodiment, when the impact force in advance reaches the limit of the drop impact specification of the device, "unusable", A message such as "Caution for handling!" Or "Cannot be used when dropped" is displayed, and the user and those involved in storage and transportation are notified of the enlightenment display message.

Due to this enlightenment display message, the user does not continue to operate the device as it is, but is careful in handling and takes actions such as applying a cover to avoid impact to avoid the device from breaking down in advance. It has the effect of improving durability.

If the user continues to operate the device as it is, the function of the portion susceptible to impact automatically stops, and the function of the device itself automatically stops, so that the operation cannot be continued. Further, it is recorded in the record such as the recording part that the function of the portion vulnerable to the drop or the impact is automatically stopped. This makes it clear that the device failure was caused by improper handling by the user. In addition, it became clear where the device is vulnerable to drops and impacts,
It can be useful in analyzing countermeasures.

The user does not continue to operate the device as it is,
Respond promptly according to the warning instructions above, take care of the device by avoiding rough handling and nervous operation, take actions such as putting on the provided soft cover, and then, in advance, when the operating environment situation comes, All functions can be retained normally.

Next, a fourth embodiment of the present invention will be described. The fourth embodiment is characterized in that it is provided with means for detecting a vibration strain force, such as a vibration energy sensor, and means for recording the accumulated fatigue degree of the vibration strain with respect to the apparatus.

The vibration energy sensor converts mechanical vibration into an electric signal and extracts the electric signal. There are various types such as a piezoelectric type, a conductive type, and a server type. An example using the piezoelectric type will be described from the practicality of the present case.

The piezoelectric vibration energy sensor generates an electric signal by a piezoelectric effect when it senses mechanical vibration. When a force F is applied to a rectangular parallelepiped piezoelectric element, a charge represented by (Equation 2) is given between electrodes. Q occurs.

[0070]

## EQU00002 ## Q = d.times.L.times.F / T, where d: piezoelectric constant L: size of piezoelectric element in F direction T: thickness of piezoelectric element Therefore, the open end voltage V0 generated between the electrodes is The capacitance C, the inductive conductivity ε, and the dimension W of the piezoelectric element in the direction perpendicular to the F direction can be expressed by the equation (3).

[0071]

[Formula 3] V0 = Q / C = d · F / (ε · W) However, the voltage V0 is proportional to the force F.

By amplifying the output voltage of the piezoelectric vibration energy sensor, the applied force can be measured, and the velocity of the force can be measured by integrating this.

Next, the operation of the fourth embodiment will be described with reference to the detection block diagram of FIG. 13 and the waveform diagram of FIG.
The waveform diagram in Fig. 14 shows three types of examples (a), (b), and (c). (A) is a vibration wave of the detected output voltage, (b) is an amplification of (a), and The vibration wave of the output voltage multiplied, the output wave of the electric signal obtained by smoothing (b), and the vibration detection wave by which (c) is numerically converted into (c) are shown. Therefore, the detection output (a), (b),
The vibration energies of (c) are 127, 327, and 177, which is 631 in total. Such recording allows the accumulation of data for analysis such as total vibration energy of the device, force velocity, metal fatigue of the device.

In FIG. 13, the apparatus main body is provided with a plurality of vibration strain detecting sections 61 for detecting vibration. The vibration strain detection unit 61 includes an amplification unit 61b that amplifies the vibration amplitude of the output voltage detected by the vibration energy sensor 61a, a square product unit 61c that squares the product, and a smoothing unit that smoothes the product. 61d, which outputs the detected electric signal. The vibration detected by the vibration strain detection unit 61 is sent to an analog / digital conversion unit (A / D conversion unit) 101 and converted into vibration data of a digital amount, and the numerical value is used as address data in a random access memory ( RAM) 102A. The RAM 102A is addressed by the output of the A / D conversion unit 101, and has an area Ma for storing vibration data of each surface and the vicinity of each surface, and an area Mo for a read only memory (ROM) 102B for storing comments. ing. R
The vibration data read from the AM 102A is sent to the character generator 103, and the contents thereof are converted into data for dot display on the matrix display unit 104,
It is read by the latch 105. The data read by the latch 105 is sequentially written in the random access memory (RAM) 106, and the contents of the RAM 106 are sent to the display driver 107 and converted into the display data to be converted into the matrix display unit 10.
Displayed in 4. The vibration data read from the RAM 102A is input to the control unit 108.

The control unit 108 compares the unusable specification value of the device, which has already been written in the RAM 102A, with the numerical data of the vibration energy and the speed of force to determine whether or not it is within the specification value.
Further, the control unit 108, based on the key input signal from the key input unit 109, the character generator 103 and the latch 105.
An operation command signal is output to, a display switching signal is output to the display driver 107, and a command signal for controlling each function is output.

The comment data calling unit 110 is the control unit 1
The comment data from 08 is sent to the area Mo of the ROM 102B as address data, and the comment data stored in the designated address area is called and supplied to the digital / analog converter (D / A converter) 111. This D / A
The conversion unit 111 converts the comment data read from the ROM 102B into a voice signal of an analog amount and sends the voice signal to the speaker 113 via the amplification unit 112 to generate a warning voice.

In the portable electronic equipment according to the fourth embodiment, vibration is applied not only during use but also during carrying as in the above-mentioned application. Therefore, a vibration distortion force is detected and a preliminary voltage from the holding power source is stored in the storage unit. When the user turns on the main power at the start of the device, the power is automatically supplied to the means for displaying the enlightening comment to the user and notifying the warning. This is not necessary when the capacity of the holding power supply is sufficiently large.

In the fourth embodiment, the same effect as in the third embodiment can be obtained, and when the device breaks down due to vibration during carrying, it is possible to confirm the record evidence of the vibration strain. Before the user starts transporting the device, there is an effect that the user can be enlightened with the vibration resistance strain of the device and the handling management of the device.

Next, a fifth embodiment of the present invention will be described. In the fifth embodiment, a semiconductor thin film magnetoresistive element type displacement sensor or other means for automatically detecting a vibration strain force, and the detected amplitude of the vibration of the output voltage are amplified.
And a means for outputting a D / D-converted electric signal.

In the structure of the fifth embodiment, a semiconductor thin film magnetoresistive element type displacement sensor or the like is provided in place of the vibration strain detecting portion of FIG. 13 showing the structure of the fourth embodiment to automatically detect the vibration strain force. Since the other parts are the same as those in the fourth embodiment, detailed description thereof will be omitted.

It is different that the purpose of detecting the use environment is vibration energy in the case of the fourth embodiment and displacement strain in the case of the fifth embodiment.

An example using a non-contact type displacement sensor with a magnetoresistive element using a semiconductor thin film in order to detect displacement strain applied to a portable electronic device for a long time will be described.

The non-contact type displacement sensor uses a magnetoresistive effect in which the electric resistance of a semiconductor increases in a magnetic field and detects the change in the magnetic field due to displacement strain. The magnetoresistive sensor has electrodes attached to both ends of a semiconductor piece. When a magnetic field is applied perpendicularly to the surface of the device, the resistance between the electrodes increases. In particular, semiconductor material InSb
(Indium antimony) has a marked increase in resistance.

As shown in FIG. 15, the non-contact type displacement sensor 70 of the differential type magnetoresistive element is constructed, and the magnetic flux is received by the relative movement of the facing magnet 71 and the magnetoresistive element 72 as shown in FIG. It differentially passes through the two quadrant elements of the sensing section 73. Terminal 74
When the input voltage E1 is applied from the power supply 75 between a and 74c, the terminals 74a,
The divided output voltage E2 appears between 74b, and the displacement detection of the displacement sensor circuit of FIG. 17 can be obtained. Displacement sensitivity is characterized in that it can be used for a long time because there is no contact point with the magnetoresistive element 72, there is no contact resistance or sliding friction, it is strong against noise, and power consumption is small.

In the fifth embodiment, the semiconductor thin film magnetoresistive element type displacement sensor is mounted on a portable electronic device in left / right / up / down directions.
Attach in three directions, front and back. Amplifies the amplitude of the output voltage oscillation that sequentially detects displacement strain in three directions of the device,
An electric signal obtained by A / D converting this is output. In the following, as in the case of the fourth embodiment, means for automatically recording the accumulated fatigue level of vibration strain with respect to the device, means for automatically determining whether or not the device can be used, and determination that the device is unusable were determined. At this time, it is provided with a means for displaying that effect and a means for stopping the device so that the availability of the device can be recognized.

As a concrete example of the means for stopping the device, a clock pulse of the power supply of the device or the device controller 13 of FIG.
It is conceivable to stop the oscillating pulse for controlling and driving. When the displacement sensor detects a change in the magnetic field due to displacement strain, the resistance value increases significantly.Therefore, when the voltage of the comparison circuit is exceeded, the output of the comparison circuit operates, and this output signal activates the clock signal of the power supply of the device having terminals such as reset. The pulse or the oscillation pulse for controlling and driving the microprocessor (MPU) of the device control unit 13 is stopped. When a displacement strain out of the operation guarantee is applied, the MPU stops, but the memory contents are not destroyed and the data in the main memory can be protected.

As is apparent from the fifth embodiment, a semiconductor thin film magnetoresistive element type displacement sensor or the like is provided to detect a vibration strain force, and the amplitude of the vibration of the output voltage detected by the displacement strain sensor or the like is amplified. , It outputs an electric signal that is A / D converted, records the accumulated fatigue level of vibration strain on the device, judges whether or not the device can be used, and when it is judged that the device cannot be used, that effect is indicated. Along with the means for displaying, it stops the device and recognizes whether or not the device can be used.The user can confirm the record evidence of the vibration strain without continuing the operation of the device as it is, and the user can confirm the device. The effect that the user can be enlightened about vibration strain resistance of the device and the handling management of the device before the operation starts, and the device function can be stopped in advance without failure to promote the enlightenment of the handling management of the device. A.

Further, when the device is judged to be usable or not, and when it is judged that the device is not usable, the displacement sensor is provided with a function of stopping the device together with a means for displaying the fact. When a change is detected, the resistance value remarkably increases, so that the output of the comparison circuit operates when the voltage of the comparison circuit is exceeded, and this output signal causes the clock pulse of the power supply of the device having terminals such as reset or the microprocessor of the device control unit. The oscillation pulse that controls and drives (MPU) is stopped. When a displacement strain out of the operation guarantee is applied, the MPU stops, but the memory contents are not destroyed and the data in the main memory can be protected.

Next, a sixth embodiment of the present invention will be described. In the sixth embodiment, similarly to the fourth embodiment, means for automatically detecting the vibration strain force composed of the vibration energy sensor and means for automatically recording the accumulated fatigue degree of the vibration strain with respect to the apparatus are provided. Further, means for automatically determining whether or not the device can be used by comparing with a first judgment value (impact specification value), means for notifying a warning display comment by the first judgment, and comparison with a second judgment value Then, it is provided with means for automatically determining whether the device is unusable, means for displaying the second judgment value, and means for stopping the device, and means for notifying the display comment of enlightenment is used to determine whether or not the device can be used. This is a configuration characterized by recognition.

The operation of the sixth embodiment will be described with reference to FIG. Similar to the fourth embodiment of FIG. 13, the apparatus main body is provided with a plurality of vibration strain detecting sections 61 for detecting vibration. The vibration strain detector 61 amplifies the vibration amplitude of the output voltage detected by a vibration energy sensor, squares the product, and outputs a smoothed electric signal (S3-1). Vibration strain detector 61
The vibration detected in step S1 is sent to the A / D converter 101, converted into digital vibration data, and the numerical value is supplied to the RAM 102A as address data. This value TX is automatically recorded periodically on the basis of the accumulated fatigue of vibration strain on the device (S3-2). The vibration strain limit specification value of the device is set in advance as the first vibration energy determination value T1 and the vibration strain limit specification value of the device is set as the second vibration energy determination value T2 and stored in the ROM 102B. . If the TX is compared with the first vibration energy determination value T1 (S3-3), that is, if TX <T1, it is determined that the normal use can be continued, and the "use continued display" is lit (S3). -Five). On the other hand, if TX ≧ T1, then TX is compared and judged with the second vibration energy judgment value T2 (S3-4). That is, if TX ≧ T2, it is determined that the vibration strain limit specification value of the device is exceeded, and the device cannot be continuously used any more. If it continues further, there is a possibility that the device may malfunction or an accident may not be guaranteed, so the device or some functions will be automatically stopped (S3-
6). There are more opportunities for the accumulated fatigue level of vibration energy of the portable electronic device to be TX ≧ T2 when carrying or carrying the device than when using the device. Know that the device or some function is "down." That is, the comment of "use prohibited" is displayed for a certain time after the power is turned on (S3-7).

If TX <T2 in step (S3-4), it can be determined that the vibration strain limit specification value of the device is not exceeded, and the device can be used continuously. Therefore, it is necessary to let the user recognize that the device is being used at the risk of the user. Therefore, although it is possible to continue using, warnings, enlightenment and processing items are displayed in the "warning comment" (S3-
8), "Warning indicator lamp" blinks (S3-9), and "Warning voice"
(Buzzer, etc.) ”calls the user's attention when handling the device (S3-10). Warning operations such as "warning comment display" and "warning voice" are continued until reset (S3-11). If the device is in use or being carried, it will be reset immediately and the "warning comment display" and "warning voice" will stop (S3
-12), "Warning indicator lamp" keeps blinking (S3-13). However, if the device is being transported by a luggage carrier such as a bicycle or a truck, it will not be reset and the warning sound will continue to sound.
(S3-14) If the reset is not performed for a certain period of time, the function is automatically protected (S3-15).

Therefore, according to the sixth embodiment, it is possible to control the vibration strain force in two steps as described above, and at a time earlier than the stop of the device by the detection in one step. You can check the accumulated fatigue level of the vibration strain force that the device receives finely, and the user can quickly respond according to the above warning instructions without moving the device as it is, and move the device while avoiding continuous vibration. If an action such as applying a cover is performed and then the usage environment is reached, all functions can be normally maintained in advance without failure, and the durability and life of the device can be extended.

For example, the paper feeding function of the printing unit in the portable electronic device is normally operated when wear and deterioration of gears, belts, paper pressing springs, etc. occur due to loosening of screws due to accumulation of continuous vibration strain force for a long period of time. Print position shifts without paper being fed,
This leads to problems such as double printing and irregular print line spacing. Accumulation of abnormal continuous strain force causes damage to the gears, belts, paper holding springs, etc. due to loosening of screws within a fraction of the life of the device under normal use, resulting in failure of the function or device. Cannot be used.

The user cannot recognize whether the current handling of the device is abnormal or normal, and the user of rough handling thinks that it is normal handling.
For example, the degree of accumulation of vibration strain force is faster than usual, and the handling of the device is abnormal. If you pay attention to the handling of the device, you can see how much you can use it afterwards with a "warning comment".
As a result, warnings, enlightenment, processing items, etc. are displayed, and the user can be more comfortable and satisfied with the device.

When the vibration strain limit specification value of the device is exceeded due to the accumulation of abnormal continuous vibration strain force, it is determined that the device cannot be used any longer. Further continuous use may cause a failure of the device or an accident in which the function cannot be guaranteed, so the device or a part of the functions is automatically stopped.

For example, when the power source section of a portable electronic device is accumulated with continuous vibration strain force for a long period of time, and the screw loosens, the pattern of the electric wire or the printed circuit board is broken or short-circuited, or the insulating terminal is deteriorated by abrasion. , Normal power cannot be supplied, and each functional unit of the device is damaged,
Fire and danger to the user. The user cannot recognize whether the current device status is abnormal or normal and avoids trying to continue using or operating by automatically stopping the device or some functions. There is an effect that can be.

As in the sixth embodiment, means for notifying a display comment of two-stage vibration strain detection and two-stage enlightenment,
Having a means of shutting down a device or part of
It promotes awareness and readiness for users. It is to be clarified that continued use after the first warning instruction is exceeded by exceeding the vibration strain limit specification value of the device is solely due to the risk of the user and not the responsibility of the device or the device manufacturer. is there.

According to the sixth embodiment, it is possible to prevent troubles which may occur when the bicycle is continuously carried by a bicycle or when the apparatus is handheld and the apparatus is continuously operated. At the same time, there is the effect that the user can be warned and the notification of the device in a bad environment can be avoided.

As the vibration strain detector 61 in the sixth embodiment, a strain gauge, a film for pressure measurement, a pressure conductive rubber, a vibration energy sensor, a semiconductor thin film magnetoresistive element type displacement sensor, etc. are used. Can be used.

Next, a seventh embodiment of the present invention will be described. In the seventh embodiment, means for detecting at least one of impact or strain on the surface of the device and means for displaying the detection result are provided on the surface of the device.
It is characterized in that it can recognize whether or not the device can be used. There is a pressure measurement film that has the functions of both the means for detecting the impact on the surface and the means for displaying the detection result. In the seventh embodiment, this pressure measuring film is attached to the surface of the device.

The pressure measuring film is a film whose color density changes in accordance with the physical impact force, and the contact pressure distribution in a narrow place such as between parts which could not be measured by the conventional method can be easily seen from the shade of the color. It is understood that the value of the impact force can be obtained from the color density. As a specific example of the pressure measurement film, there is a product name “Prescale” manufactured by Fuji Photo Film Co., Ltd.

FIG. 19 is a schematic view showing the structure and principle of a pressure measuring film, which is a support made of a polyester film.
80, the intermediate layer 81, and the microcapsules 82a of the color-developing layer 82 of the A film 83 including the color-developing layer 82 are destroyed by the impact force, and the colorless paint 82b therein is a support 84 made of a polyester film, The C layer 87 composed of the intermediate layer 85 and the developer layer 86 is adsorbed to the developer layer 86 to develop a color by a chemical reaction (B portion). Since the microcapsules 82a of the color forming agent layer 82 are adjusted to various strengths, a color density according to the impact force can be obtained. Therefore, it is possible to obtain the impact force distribution on the surface by the shade of color and the impact force value from the color density.
(See Figure 20).

The detecting means for detecting the strain force by sticking the pressure measuring film 88 on the surface or corner of the device does not require a power source or a circuit for the detection and measurement. Since the shape can be freely created, it can be attached to the surface or corner of the device to be measured. In addition, the impact force distribution on the entire surface can be seen at a glance, and the impact value can be measured. You can also save a record of the measurement results,
Has irreversible evidence capability. Further, it is a detection means having a characteristic that it can be measured by a simple operation.

If the device breaks down due to the user accidentally slipping his hand and dropping the device, the evidence of the impact of the drop can be confirmed at a glance. Even if the device does not break down in the above case, the display of the record of the drop impact has the effect of encouraging the user to be resistant to the drop impact of the device and to educate the user about handling and management of the device. Since the films can be re-attached, there is an effect that the impact resistant material can be selected according to the impact resistant specification and the purpose of use and the strength can be designed.

In the first to seventh embodiments, the detecting means is not limited to the constitution of each embodiment, and the same effect can be obtained as long as it detects at least one of impact and strain force. Further, it is possible to obtain a more effective structure by appropriately selecting and combining the respective embodiments.

[0106]

As described above, according to the portable electronic equipment of the present invention, according to the constitutions of claims 1, 4, 5, 6, 7, 8 and 9, the surface and the proximity of the electronic equipment are provided. It is possible to detect the impact and strain force in the surroundings, determine the availability of the device from the detection output, and display and notify to that effect and stop the operation of the device when the availability of the device is determined. Therefore, it is possible to prevent the use, storage and transportation of the device in an inappropriate environment. In addition, it is possible to prevent in advance the occurrence of an accident such as an obstacle or smoke and ignition due to the use of the device as it is, thereby improving the reliability of the device and preventing the life of the device from being shortened.

According to the constructions of claims 2, 4, 5, 6, 7, 8, and 9, in addition to the above-mentioned effect, the control can be carried out in two steps, so that the detection of one step can stop the apparatus. It is possible to check the accumulated fatigue level that the device is subjected to even earlier than before, and the user does not continue operating the device but responds promptly according to the warning instruction and moves the device avoiding continuous vibration. However, if you take actions such as applying a soft cover, and then if the usage environment is reached, you can maintain all functions normally in advance without failure, and extend the durability and life of the device. it can.

According to the third aspect of the present invention, when the unusable state returns to the enabled state, each unit is automatically judged to be set to the reusable state, so that the so-called user-friendly device is provided. Can be provided.

According to the structure of claim 9, the accumulated fatigue level of the device can be automatically recorded, and the recorded data can be used to
It can be more surely determined whether or not the device can be used, and it can also be used to promote enlightenment of handling management based on the recorded contents.

According to the structure of claim 10, by displaying the degree of impact and strain force irreversibly by the pressure measurement film, it is possible to judge at a glance whether or not the apparatus can be used, and whether the impact progress is permanent. Recording can be performed, and by changing the film, it is possible to easily cope with shock-resistant use and purpose.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of a first embodiment of a portable electronic device device of the present invention.

FIG. 2 is a block diagram showing a configuration relating to a display unit and a notification unit of the first embodiment.

FIG. 3 is a flowchart relating to a processing operation of the first embodiment.

FIG. 4 is a perspective view showing an appearance of a second embodiment of the present invention.

FIG. 5 is a structural diagram of a vibration strain detector of the second embodiment.

FIG. 6 is a flowchart relating to a processing operation of the second embodiment.

FIG. 7 is a diagram showing characteristics of the pressure conductive rubber in the third embodiment of the present invention.

FIG. 8 is an explanatory view showing the principle of a pressure conductive rubber.

FIG. 9 is a configuration diagram showing a usage example of a pressure conductive rubber in a third embodiment.

FIG. 10 is a configuration diagram showing a usage example of a pressure conductive rubber in a third embodiment.

FIG. 11 is a configuration diagram showing a usage example of a pressure conductive rubber in a third embodiment.

FIG. 12 is a detection circuit diagram to which a pressure conductive rubber is connected.

FIG. 13 is a schematic block diagram of a configuration for detecting a vibration strain force according to a fourth embodiment of the present invention.

FIG. 14 is a waveform diagram of the fourth example.

FIG. 15 is a perspective view showing the configuration of a contactless displacement sensor for a differential magnetoresistive element according to a fifth embodiment of the present invention.

16 is an explanatory diagram of the operation of the contactless displacement sensor of FIG.

17 is an explanatory diagram of displacement detection of the non-contact displacement sensor of FIG.

FIG. 18 is a flowchart relating to the processing operation of the sixth embodiment of the present invention.

FIG. 19 is an explanatory view showing the constitution of the pressure measuring film in the seventh embodiment of the present invention.

20 is an explanatory diagram of detection display of the pressure measurement film of FIG.

[Explanation of symbols]

10 ... Portable electronic device, 11a to 11n ... Impact detector,
12 ... Operation environment determination unit, 13 ... Device control unit, 14a to 14m ... Each functional unit, 15 ... Environment display unit, 16 ... Center device, 17 ...
Storage unit, 20 ... Device body, 22 ... Display unit / touch panel unit, 24 ... Strain detection unit, 30 ... Pressurized conductive rubber, 61 ...
Vibration strain detector, 70 ... Non-contact displacement sensor, 88 ...
Pressure measurement film, 101 ... A / D converter, 102, 102
B ... ROM, 102A ... RAM, 103 ... Character generator, 104 ... Matrix display section, 105 ... Latch, 106 ... RAM, 107 ... Display driver, 108 ... Control section, 110 ... Comment data calling section, 111 ... D /
A converter, 112 ... Amplifier, 113 ... Speaker.

Claims (10)

[Claims] 1. A detection means provided in the apparatus for detecting at least one of impact and strain force, a recording means for automatically recording at least one of impact and strain force for the apparatus, and an allowable operating environment range of the apparatus and When the impact specification value set according to storage / transportation environmental conditions and the output from the detection means are compared and analyzed to determine automatically whether the device can be used, and when it is determined that the device cannot be used. In addition, a display means for automatically displaying such a fact or a notification means for generating a warning sound or a comment for a warning together with a stop means for automatically stopping the corresponding function of the apparatus or a related function are provided. Portable electronic device device. 2. A detection means provided in the apparatus for detecting at least one of impact and strain force, a recording means for automatically recording at least one of impact and strain force with respect to the apparatus, and a permissible environment range of the apparatus and The judgment value set according to storage / transportation environmental conditions and the output from the detection means are compared and analyzed, and the judgment means automatically judges whether or not the device can be used, and the judgment means exceeds the first judgment value. And a means for notifying the user that the device cannot be used and for stopping the device when the determination means determines that the second determination value is exceeded. And a portable electronic device. 3. The apparatus according to claim 1, further comprising means for determining that the portion determined to be unusable can be reused, and means for automatically canceling the stop of the corresponding function or related function of the apparatus. Item 3. The portable electronic device apparatus according to Item 1 or 2. 4. The portable electronic device according to claim 1, wherein the detecting means is a strain gauge provided on a surface or a corner of the device for detecting a strain force. 5. The portable electronic device according to claim 1, wherein the detecting means is a film for pressure measurement provided on a surface or a corner of the device for detecting a strain force. 6. The portable electronic device apparatus according to claim 1, wherein the detection means is a pressure conductive rubber provided on a surface or a corner of the apparatus for detecting a strain force. 7. A vibration energy sensor for detecting a vibration strain force, the detection means amplifying the vibration amplitude of the output voltage detected by the vibration energy sensor, and squaring the electric signal to obtain a smoothed electric signal. 3. The portable electronic device apparatus according to claim 1, wherein the portable electronic device apparatus is configured by an output unit. 8. A semiconductor thin film magnetoresistive element type displacement sensor for detecting a vibration strain force, and an amplitude of an output voltage vibration detected by the semiconductor thin film magnetoresistive element type displacement sensor is amplified by the detecting means. 3. The portable electronic device apparatus according to claim 1, wherein the portable electronic device apparatus is configured by means for converting an analog / digital signal and outputting it. 9. The portable electronic device according to claim 6, wherein the recording means according to claim 1 or 2 further comprises means for automatically recording the accumulated fatigue level of vibration strain with respect to the device. apparatus. 10. A method for detecting at least one of an impact force and a strain force, and color-displaying the degree of impact corresponding to an impact specification value set according to an allowable operating environment range of the device, storage / transportation environmental conditions, and the like. A portable electronic device having a pressure measuring film attached to the surface or corner of the device.