JPH04152268A - Portable electronic equipment having shock detection circuit - Google Patents
Portable electronic equipment having shock detection circuitInfo
- Publication number
- JPH04152268A JPH04152268A JP2276456A JP27645690A JPH04152268A JP H04152268 A JPH04152268 A JP H04152268A JP 2276456 A JP2276456 A JP 2276456A JP 27645690 A JP27645690 A JP 27645690A JP H04152268 A JPH04152268 A JP H04152268A
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- Prior art keywords
- circuit
- shock
- power supply
- impact
- portable electronic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000001514 detection method Methods 0.000 title claims abstract description 58
- 230000035939 shock Effects 0.000 title claims abstract description 54
- 238000004092 self-diagnosis Methods 0.000 claims abstract description 20
- 238000010586 diagram Methods 0.000 description 15
- 230000005856 abnormality Effects 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 6
- 230000006378 damage Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明は衝撃検出回路の検出信号により携帯用電子機器
内の回路への給電を制御することのできる衝撃検出回路
付携帯用電子機器に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a portable electronic device with an impact detection circuit that can control power supply to a circuit within the portable electronic device based on a detection signal from an impact detection circuit. It is.
〔従来の技術]
一般に携帯用電子機器を落下させたり、他の物体とぶつ
けたりしたきの衝撃により機器の故障や破損を生じるこ
とがよくある。[Prior Art] In general, the impact of dropping a portable electronic device or hitting it with another object often causes the device to malfunction or be damaged.
従来この対策としては、例えば機器の筐体をカバーケー
スで覆い、衝撃力を機器内部に伝えにくくする方法、機
器筐体の内部に衝撃吸収体を貼り吸収をする法、筐体外
部を堅牢な構造とすると共に内部部品の脱落や振動を防
止する方法などが採用されいた。Conventional countermeasures include, for example, covering the device casing with a cover case to make it difficult for the impact force to be transmitted to the inside of the device, attaching a shock absorber to the inside of the device casing, and making the outside of the casing sturdy. In addition to improving the structure, methods were also adopted to prevent internal parts from falling off and vibration.
[発明が解決しようとする課題]
しかしながら従来の携帯用電子機器に対する衝撃対策は
十分ではなく、機器の機械的及び電気的故障を発生する
ことが多い。例えばマイクロプロセッサ(以下CPUと
いう)や記憶回路を内蔵する携帯用電子機器が動作状態
で落下した場合に、その衝撃によりプリント基板上の部
品の脱落やプリント基板の亀裂によるパターン切れなど
が生じ、その結果内蔵するCPUが制御不能となり(一
般にこの状態をCPUが暴走したという)、記憶回路に
格納されたデータが破壊されたりすることがある。また
この場合に記憶データが破壊されたかどうかを使用者が
判らないという問題点があった。[Problems to be Solved by the Invention] However, conventional shock protection for portable electronic devices is not sufficient, and mechanical and electrical failures of the devices often occur. For example, if a portable electronic device with a built-in microprocessor (hereinafter referred to as CPU) or a memory circuit is dropped while in operation, the impact may cause parts on the printed circuit board to fall off or patterns to break due to cracks in the printed circuit board. As a result, the built-in CPU may become uncontrollable (this state is generally referred to as a runaway CPU), and data stored in the memory circuit may be destroyed. Additionally, in this case, there is a problem in that the user cannot tell whether or not the stored data has been destroyed.
また上記機器が非動作状態で落下した場合にも、その衝
撃力により回路に短絡や開放などの故障が発生していて
、その後電源が投入されると同時に短絡した回路から発
火したり、またCPUの暴走や記憶データの破壊などの
事故が発生することがあるという問題点があった。In addition, even if the above-mentioned equipment is dropped while not in operation, the impact force may cause a malfunction such as a short circuit or an open circuit in the circuit, and the short circuit may catch fire as soon as the power is turned on, or the CPU There was a problem in that accidents such as runaway operation and destruction of stored data could occur.
本発明は、かかる問題点を解決するためになされたもの
で、携帯用電子機器に衝撃検出手段を設け、機器が動作
中の衝撃検出信号により機器内の回路への給電を断とし
、また機器が非動作中の衝撃検出信号は記憶しておき、
その後機器内の回路が給電されたときに、前記記憶され
た衝撃情報に基づき機器の自己診断を行なうことができ
る衝撃検出回路付携帯用電子機器を得ることを目的とす
る。The present invention has been made in order to solve such problems, and includes providing a shock detection means in a portable electronic device, cutting off power supply to a circuit inside the device in response to a shock detection signal when the device is in operation, and The shock detection signal when the is not operating is memorized.
It is an object of the present invention to provide a portable electronic device with an impact detection circuit capable of self-diagnosing the device based on the stored impact information when the circuit in the device is subsequently powered.
[課題を解決するための手段]
本発明の請求項1に係る衝撃検出回路付携帯用電子機器
は、機器に加えられた衝撃を検出する回路を備えた携帯
用電子機器において、常時給電され前記携帯用電子機器
に所定値以上の衝撃が加えられたことを検出する衝撃検
出手段と、常時給電される電源制御回路とを備え、前記
電源制御回路は、前記衝撃検出手段が検出した衝撃検出
信号に基づき、前記携帯用電子機器の給電されている書
込み/読出し記憶回路を含む主要回路への給電を断とす
る第1の電源制御手段と、前記衝撃検出手段が検出した
衝撃検出信号を記憶し、衝撃有無の情報を出力する衝撃
情報記憶手段と、前記携帯用電子機器の書込み/読出し
記憶回路を含む主要回路への給電を操作員の操作信号に
基づき接/断とする第2の電源制御手段と、前記第2の
電源制御手段により前記書込み/読出し記憶回路を含む
主要回路への給電が開始され、前記衝撃情報記憶手段が
衝撃有りの情報を出力したときに、前記書込み/読出し
記憶回路へのアクセス禁止制御を行なうアクセス禁止制
御手段と、前記第2の電源制御手段により前記書込み/
読出し記憶回路を含む主要回路への給電が開始され、前
記衝撃情報記憶手段の衝撃有りの情報を出力したときに
、前記主要回路が行なう自己診断用時間を設定し、直ち
に時間経過を計数するタイマ手段と、前記タイマ手段が
設定された自己診断用時間を計数し終ったとき出力する
タイムアツプ信号に基づき、前記書込み/読出し記憶回
路を含む主要回路への給電を断とする第3の電源制御手
段とを含むものである。[Means for Solving the Problems] A portable electronic device with an impact detection circuit according to claim 1 of the present invention is a portable electronic device equipped with a circuit for detecting an impact applied to the device. It includes an impact detection means for detecting that an impact of a predetermined value or more is applied to a portable electronic device, and a power supply control circuit that is constantly supplied with power, and the power supply control circuit receives an impact detection signal detected by the impact detection means. a first power supply control means for cutting off power supply to main circuits including a write/read storage circuit to which power is supplied in the portable electronic device; and a shock detection signal detected by the shock detection means. , an impact information storage means for outputting information on the presence or absence of an impact, and a second power supply control that connects/disconnects power supply to main circuits including a write/read storage circuit of the portable electronic device based on an operation signal from an operator. and the second power supply control means starts power supply to the main circuits including the write/read storage circuit, and when the impact information storage means outputs information indicating that there is an impact, the write/read storage circuit access prohibition control means for controlling access prohibition to the write/write access control means;
a timer that sets a self-diagnosis time to be performed by the main circuit and immediately counts the elapsed time when power supply to the main circuit including the readout storage circuit is started and the shock information storage means outputs information indicating that there is an impact; and a third power supply control means for cutting off power supply to the main circuits including the write/read storage circuit based on a time-up signal outputted when the timer means finishes counting the set self-diagnosis time. This includes:
本発明の請求項2に係る衝撃検出回路付携帯用電子機器
は、前記請求項1に係る発明において、前記携帯用電子
機器の書込み/読出し記憶回路が、携帯用電子機器本体
と着脱可能で、且つバックアップ電池の装着された書込
み/読出しメモリカード回路であるとするものである。A portable electronic device with an impact detection circuit according to claim 2 of the present invention is the portable electronic device with an impact detection circuit according to the invention according to claim 1, wherein the write/read storage circuit of the portable electronic device is removable from the main body of the portable electronic device, Moreover, it is assumed that the circuit is a write/read memory card circuit equipped with a backup battery.
[作用]
本請求項1に係る発明においては、機器に加えられた衝
撃を検出する回路を備えた携帯用電子機器において、衝
撃検出手段は常時給電され前記携帯用電子機器に所定値
以上の衝撃が加えられたことを検出する。電源制御回路
は常時給電され、下記の第1の電源制御手段、衝撃情報
記憶手段、第2の電源制御手段、アクセス禁止制御手段
、タイマ手段及び第3の電源制御手段を含む。前記電源
制御回路に含まれる第1の電源制御手段は前記衝撃検出
手段が検出した衝撃検出信号に基づき、前記携帯用電子
機器の給電されている書込み/読出し記憶回路を含む主
要回路への給電を断とする。[Function] In the invention according to claim 1, in a portable electronic device equipped with a circuit for detecting an impact applied to the device, the impact detection means is constantly supplied with power to prevent an impact of a predetermined value or more from being applied to the portable electronic device. Detects that . The power supply control circuit is constantly supplied with power and includes the following first power supply control means, shock information storage means, second power supply control means, access prohibition control means, timer means, and third power supply control means. A first power supply control means included in the power supply control circuit controls power supply to main circuits including a write/read storage circuit to which power is supplied of the portable electronic device, based on the shock detection signal detected by the shock detection means. I refuse to do so.
衝撃情報記憶手段は前記衝撃検出手段が検出した衝撃検
出信号を記憶し、衝撃有無の情報を出力する。第2の電
源制御手段は前記携帯用電子機器の書込み/読出し記憶
回路を含む主要回路への給電を操作員の操作信号に基づ
き接/断とする。アクセス禁止手段は前記第2の電源制
御手段により前記書込み/読出し記憶回路を含む主要回
路への給電が開始され、前記衝撃情報記憶手段が衝撃有
りの情報を出力したときに、前記書込み/読出し記憶回
路へのアクセス禁止制御を行なう。タイマ手段は前記第
2の電源制御手段により前記書込み/読出し記憶回路を
含む主要回路への給電が開始され、前記衝撃情報記憶手
段が衝撃有りの情報を出力したときに、前記主要回路が
行なう自己診断用時間を設定し、直ちに時間経過を計数
する。第3の電源制御手段は前記タイマ手段が設定され
た自己診断用時間を計数し終ったとき出力するタイムア
ツプ信号に基づき、前記書込み/読出し記憶回路を含む
主要回路への給電を断とする。The impact information storage means stores the impact detection signal detected by the impact detection means and outputs information on the presence or absence of an impact. The second power supply control means connects/disconnects power supply to main circuits including a write/read storage circuit of the portable electronic device based on an operation signal from an operator. The access prohibiting means is configured to inhibit the writing/reading memory when the second power supply control means starts supplying power to the main circuits including the writing/reading memory circuit and the impact information storage means outputs information indicating that there is an impact. Performs access prohibition control to the circuit. The timer means is configured to perform a self-control operation performed by the main circuit when the second power supply control means starts power supply to the main circuit including the write/read storage circuit and the shock information storage means outputs information indicating that there is a shock. Set the diagnostic time and immediately count the time elapsed. The third power supply control means cuts off the power supply to the main circuits including the write/read storage circuit based on a time-up signal outputted when the timer means finishes counting the set self-diagnosis time.
本請求項2に係る発明においては、前記請求項1に係る
発明において、前記携帯用電子機器の書込み/読出し記
憶回路は書込み/読出しメモリカード回路であり、該書
込み/読出しメモリ回路は前記携帯用電子機器本体と着
脱可能で、且つバックアップ電池が装着されている。In the invention according to claim 2, in the invention according to claim 1, the write/read memory circuit of the portable electronic device is a write/read memory card circuit; It is removable from the main body of the electronic device and is equipped with a backup battery.
L実施例]
第1図は本発明に係る衝撃検出回路付携帯用電子機器の
一実施例を示すブロック図である。図において1は衝撃
センサ、2は衝撃検出回路、3は電源制御回路、4は自
己診断用時間監視タイマ、5は主制御回路であり、CP
Uを含んでいる。6はリードオンリメモリ(以下ROM
という)7はリード/ライト(以下R/Wという)メモ
リカード、8は電源スィッチ、9は衝撃表示灯、10は
異常表示灯である。L Embodiment] FIG. 1 is a block diagram showing an embodiment of a portable electronic device with an impact detection circuit according to the present invention. In the figure, 1 is an impact sensor, 2 is an impact detection circuit, 3 is a power supply control circuit, 4 is a self-diagnosis time monitoring timer, 5 is a main control circuit, and CP
Contains U. 6 is read-only memory (hereinafter referred to as ROM)
7 is a read/write (hereinafter referred to as R/W) memory card, 8 is a power switch, 9 is an impact indicator light, and 10 is an abnormality indicator light.
第2図は本発明に係る自己診断が正常時の動作タイムチ
ャート、第3図は本発明に係る自己診断が異常時の動作
タイムチャートである。FIG. 2 is an operation time chart when the self-diagnosis according to the present invention is normal, and FIG. 3 is an operation time chart when the self-diagnosis according to the present invention is abnormal.
まず衝撃センサ1及び衝撃検出回路2の動作について説
明する。First, the operations of the impact sensor 1 and the impact detection circuit 2 will be explained.
第4図(a)〜(e)は本発明に係る衝撃センサの一実
施例の構造及び原理を示す図であり、同図(a)は衝撃
センサの分解図、同図(b)は同断面図、同図(e)は
同原理図である。図において、11は永久磁石、12は
ムービングコイル、13はゴム材の円板、14はセンサ
ケース、15は信号出力線である。4(a) to 4(e) are diagrams showing the structure and principle of an embodiment of the impact sensor according to the present invention; FIG. 4(a) is an exploded view of the impact sensor, and FIG. 4(b) is an exploded view of the impact sensor. The cross-sectional view (e) is a diagram of the same principle. In the figure, 11 is a permanent magnet, 12 is a moving coil, 13 is a rubber disk, 14 is a sensor case, and 15 is a signal output line.
第5図は本発明に係る衝撃センサの取付図であり、同図
において、3個の各衝撃センサ1は電子機器の筐体16
の内部のX軸、y軸及び2軸の各軸方向の衝撃力をそれ
ぞれ検出できる位置に個別に取付けられる。FIG. 5 is an installation diagram of the impact sensor according to the present invention, and in the same figure, each of the three impact sensors 1 is mounted on a housing 16 of an electronic device.
They are individually installed at positions that can detect impact forces in the X-axis, Y-axis, and two-axis directions.
第4図(a)〜(C)及び第5図により衝撃センサの動
作について説明する。まずセンサケース14の底部に永
久磁石11を設ける。そしてこの永久磁石11により生
ずる磁束が通過する永久磁石11の上部に、やや硬めの
ゴム材の円板13の中心部に取付られたムービングコイ
ル12を配置し、このムービングコイル12が中心部に
取付けられたゴム材の円板13の周縁はセンサケース1
4の内壁に固定される。The operation of the impact sensor will be explained with reference to FIGS. 4(a) to 5(C) and FIG. 5. First, the permanent magnet 11 is provided at the bottom of the sensor case 14. A moving coil 12 attached to the center of a disk 13 made of a somewhat hard rubber material is placed above the permanent magnet 11 through which the magnetic flux generated by the permanent magnet 11 passes. The periphery of the rubber disk 13 is the sensor case 1.
It is fixed to the inner wall of 4.
センサケース14は密閉構造であるがムービングコイル
12から信号出力線15が外部に取出される。Although the sensor case 14 has a sealed structure, a signal output line 15 is taken out from the moving coil 12 to the outside.
いま衝撃センサ1の装着された電子機器の筐体16が静
止していると、センサケース14に取付けられたムービ
ングコイル12も静止しているので、該コイル12の両
端には出力電圧は発生しない。しかし電子機器に落下な
どによる衝撃力が加えられ、ゴム材の円板13の振動に
よりムービングコイル12が上下に振動すると、該コイ
ル12内を通過する磁束密度が変化し、該コイル12の
両端に起電力が発生し、この誘起電圧信号は信号出力線
15から外部に取出すことができる。また3個の各衝撃
センサ1は第5図の取付図に示したように、電子機器の
X軸、y軸及び2軸の各方向に加えられた衝撃力をそれ
ぞれ検出して衝撃検出回路2に供給する。If the case 16 of the electronic device to which the shock sensor 1 is attached is now stationary, the moving coil 12 attached to the sensor case 14 is also stationary, so no output voltage is generated across the coil 12. . However, when an impact force is applied to an electronic device, such as when it is dropped, and the moving coil 12 vibrates up and down due to the vibration of the rubber disc 13, the magnetic flux density passing through the coil 12 changes, and the magnetic flux density at both ends of the coil 12 changes. An electromotive force is generated, and this induced voltage signal can be taken out from the signal output line 15. In addition, as shown in the installation diagram of FIG. 5, each of the three shock sensors 1 detects the shock force applied in each direction of the X-axis, y-axis, and two axes of the electronic device, and connects the shock detection circuit 2. supply to.
第6図は本発明に係る衝撃検出回路の詳細なブロック図
である。同図において、21.22.23はそれぞれX
軸用、y軸用、2軸用増幅器、24は加算器、25はし
きい値設定器、26は電圧比較器である。FIG. 6 is a detailed block diagram of the impact detection circuit according to the present invention. In the same figure, 21, 22, and 23 are respectively
24 is an adder, 25 is a threshold value setter, and 26 is a voltage comparator.
第7図(a)〜(c)は第6図の動作を説明するための
波形図である。7(a) to 7(c) are waveform diagrams for explaining the operation of FIG. 6.
第7図(a)〜(e)を参照し、第6図の動作を説明す
る。前記X軸用、y軸用及びz軸用各衝撃センサ1から
の出力信号はそれぞれ対応する増幅器21.22及び2
3に入力され、信号増幅される(第7図(a)参照)。The operation in FIG. 6 will be explained with reference to FIGS. 7(a) to (e). The output signals from the X-axis, y-axis and z-axis shock sensors 1 are outputted to corresponding amplifiers 21, 22 and 2, respectively.
3, and the signal is amplified (see FIG. 7(a)).
各X%)’%Z軸用軸輪増幅器21,2及び23の出力
信号は加算器24により加算され、この加算出力信号は
電圧比較器26において、しきい値設定器25にあらか
じめ設定されたしきい値と比較される(第7図(b)参
照)。加算器24の出力信号が前記しきい値を越えると
電圧比較器28は衝撃検出信号を出力する(第7図(C
)参照)。The output signals of the Z-axis axle amplifiers 21, 2, and 23 are added by the adder 24, and this added output signal is set in advance in the threshold setting device 25 in the voltage comparator 26. It is compared with a threshold value (see FIG. 7(b)). When the output signal of the adder 24 exceeds the threshold value, the voltage comparator 28 outputs an impact detection signal (see FIG. 7(C)).
)reference).
次に第2図及び第3図を参照し、第1図の動作を説明す
る。第1図の回路の電源はバッテリであり、この電源の
バッテリが装着されている状態では、衝撃検出回路2及
び電源制御回路3には常に電源が供給され、衝撃力の検
出とこの検出信号に基づく電源制御が可能な状態となっ
ている。また電源スィッチ8は主制御回路5 (CPU
が含まれる)及びR/Wメモリカード7を含むその他の
回路(以下R/Wメモリカード7を含む主要回路と省略
する)に供給する電源をオン/オフさせるため操作員に
より手動操作されるスイッチである。Next, the operation of FIG. 1 will be explained with reference to FIGS. 2 and 3. The power source of the circuit shown in Fig. 1 is a battery, and when the battery of this power source is installed, power is always supplied to the impact detection circuit 2 and the power supply control circuit 3, and the impact force is detected and the detection signal is It is now possible to control the power supply based on the In addition, the power switch 8 is connected to the main control circuit 5 (CPU
) and other circuits including the R/W memory card 7 (hereinafter abbreviated as the main circuit including the R/W memory card 7), a switch manually operated by an operator to turn on/off the power supplied to the R/W memory card 7 It is.
電源制御回路3は常にこの電源スィッチ8の操作状態を
監視し、該スイッチ8のオン操作により前記R/Wメモ
リカード7を含む主要回路に電源を供給し、該スイッチ
8のオフ操作により前記回路への電源の供給を断とする
電源のオン/オフ制御を行っている。(これを第2の電
源制御手段という)
いま電源スィッチ8がオンであり、前記R/Wメモリカ
ード7を含む主要回路(CPUが含まれる)に電源が供
給され動作中のときに、機器が落下などによる衝撃を受
けたとする。この場合に、3個の各衝撃センサ1はそれ
ぞれ前記説明のように各x1y%Z軸方向の衝撃力を検
出し、衝撃検出回路2はこれらの加算された衝撃力があ
らかじめ設定されたしきい値を越えると衝撃検出信号を
出力し、電源制御回路3へ供給する。電源制御回路3は
この衝撃検出信号の立上りを検出すると、衝撃表示灯り
を点灯すると共に、主制御回路5、ROM6、R/Wメ
モリカード7及びその他I10回路の電源を直ちに断と
する。(これを第1の電源制御手段という)
本実施例におけるR/Wメモリカード7は携帯用電子機
器本体と着脱可能な構造であり、且つ内部にバックアッ
プ用電池を内蔵している。この内蔵電池はR/Wメモリ
カード7内のメモリ領域の全域をカバーしてもよいし、
またはメモリ領域の重要な一部分のみをバックアップす
るようにしてもよい。従ってR/Wメモリカード7は、
その供給されていた電源が断となっても該カード7内の
重要データは保存されている。さらに機器の外観上の破
損が大きい場合などには、R/Wメモリカード7を機器
本体から切離して内部情報の破壊を防止することもでき
る。The power supply control circuit 3 always monitors the operation state of the power switch 8, and when the switch 8 is turned on, power is supplied to the main circuit including the R/W memory card 7, and when the switch 8 is turned off, the power is supplied to the main circuit including the R/W memory card 7. Performs power on/off control that cuts off the power supply to the equipment. (This is referred to as a second power control means) When the power switch 8 is currently on and the main circuit (including the CPU) including the R/W memory card 7 is supplied with power and is operating, the device is activated. Suppose that you have received an impact such as from a fall. In this case, each of the three impact sensors 1 detects the impact force in each x1y% Z-axis direction as described above, and the impact detection circuit 2 detects the added impact force at a preset threshold. When the value exceeds the value, an impact detection signal is output and supplied to the power supply control circuit 3. When the power supply control circuit 3 detects the rise of this shock detection signal, it turns on the shock indicator light and immediately turns off the power to the main control circuit 5, ROM 6, R/W memory card 7, and other I10 circuits. (This will be referred to as a first power supply control means) The R/W memory card 7 in this embodiment has a structure that can be attached to and detached from the main body of the portable electronic device, and has a built-in backup battery. This built-in battery may cover the entire memory area in the R/W memory card 7,
Alternatively, only an important part of the memory area may be backed up. Therefore, the R/W memory card 7 is
Even if the power supplied to the card 7 is cut off, the important data in the card 7 is preserved. Furthermore, in cases where the external appearance of the device is severely damaged, the R/W memory card 7 can be separated from the main body of the device to prevent internal information from being destroyed.
R/Wメモリカード7を除くその他の主要回路の電源は
、本機器に加えられた衝撃が検出された時点で直ちに断
となるので、機器内の部品の脱落や基板上のプリントパ
ターンの亀裂などによりCPUの暴走、メモリ情報の破
壊及び回路の短絡による焼損などの事故が防止される。The power to all other main circuits except for the R/W memory card 7 will be cut off immediately when a shock applied to the device is detected, so there is no chance of parts falling off inside the device or cracks in the printed pattern on the board. This prevents accidents such as CPU runaway, destruction of memory information, and burnout due to short circuits.
そして電源制御回路3に衝撃検出信号が一度入力される
と、電源制御回路3はその後主制御回路5に再び電源が
供給され、主制御回路5から解除信号が供給されるまで
、この衝撃検出信号を記憶し保持している(これを衝撃
情報記憶手段という)
また電源スィッチ8がオフであり、本機器内の前記R/
Wメモリカード7を含む主要回路(CPUが含まれる)
には電源が供給されず非動作中のときに、機器が落下な
どにより衝撃を受けたとする。この場合も前記と同様に
、衝撃検出回路2及び電源制御回路3には常に電源が供
給されているので、衝撃検出回路2は一定値以上の衝撃
を加えられると衝撃検出信号を出力し、電源制御回路3
は衝撃表示灯9を点灯し、この衝撃検出信号を記憶保持
する。しかし主制御回路5、ROM6、R/Wメモリカ
ード7及びその他I10回路の電源は、既にオフとなっ
ているので、この場合に電源制御回路3はこれらの回路
の電源を断とする制御は行なわない。Once the impact detection signal is input to the power supply control circuit 3, the power supply control circuit 3 will continue to use this impact detection signal until power is supplied to the main control circuit 5 again and a release signal is supplied from the main control circuit 5. (This is called impact information storage means) Also, when the power switch 8 is off and the R/
Main circuit including W memory card 7 (CPU included)
Suppose that the device is dropped or otherwise subjected to a shock while the device is not operating and is not powered. In this case as well, power is always supplied to the impact detection circuit 2 and the power supply control circuit 3, so when an impact of a certain value or more is applied, the impact detection circuit 2 outputs an impact detection signal and the power is supplied. Control circuit 3
turns on the impact indicator light 9 and stores and holds this impact detection signal. However, since the main control circuit 5, ROM 6, R/W memory card 7, and other I10 circuits are already powered off, the power supply control circuit 3 does not control to turn off the power to these circuits in this case. do not have.
操作員は衝撃表示灯9の点火を確認し、また本機器が落
下などによる衝撃により、外観上の破損が大きい場合は
R/Wメモリカード7を機器本体から切り離して別の機
器に移して内部情報を保護するようにする。しかし機器
内部の破損が不明であり、別の機器も無く、衝撃を受け
た機器を再び使用する場合の動作につき以下に説明する
。The operator should check that the impact indicator light 9 is lit, and if the device is damaged by the impact caused by a drop or the like, remove the R/W memory card 7 from the device, move it to another device, and remove it from the inside. Make sure your information is protected. However, the damage inside the device is unknown, there is no other device, and the operation when the device that received the impact is used again will be explained below.
操作員が電源スィッチ8をオンすると(j@2図(a)
及び第3図(a)を参照)、電源制御回路3は衝撃経験
の有無を確認し、前記衝撃検出信号が保持されている場
合には(第2図(b)及び第3図(b)を参照)、まず
自己診断用時間監視タイマ4を起動し、あらかじめ設定
された自己診断に必要とされる時間の計数を開始する(
これをタイマ手段といい、第2図(d)及び第3図(d
)を参照)。モしてR/Wメモリカード7に対してアク
セスを禁止するアクセスインヒビット信号を出力しくこ
れをアクセス禁止制御手段といい、第2図(e)及び第
3図(e)を参照)、さらに主制御回路5に対して衝撃
経験信号を出力すると共に、主制御回路5、ROM6、
R/Wメモリカード7及びその他■10回路に対してバ
ッテリからの電源を供給する。When the operator turns on the power switch 8 (j@Figure 2 (a)
(see FIG. 2(b) and FIG. 3(b)), the power supply control circuit 3 checks whether or not an impact has been experienced, and if the impact detection signal is held (see FIG. 2(b) and FIG. 3(b) ), first start the self-diagnosis time monitoring timer 4 and start counting the time required for the preset self-diagnosis (
This is called a timer means, and is shown in Figs. 2(d) and 3(d).
). This is referred to as an access prohibition control means (see FIG. 2(e) and FIG. 3(e)), and outputs an access inhibit signal for prohibiting access to the R/W memory card 7. In addition to outputting an impact experience signal to the control circuit 5, the main control circuit 5, ROM 6,
Power is supplied from the battery to the R/W memory card 7 and other 10 circuits.
(前記第2の電源制御手段による)
電源制御回路3から電源の供給された主制御回路5は、
まず衝撃経験信号の有無を確認しくすなわち電源がオフ
の期間中に一定値以上の衝撃が加えられたかを確認し)
、電源制御回路3からの衝撃経験信号が有る場合には、
ROM6内に格納された自己診断プログラムを実行させ
る(第2図(C)及び第3図(C)を参照)。電源制御
回路3からの衝撃経験信号が無い場合には、主制御部5
は通常の処理を実行する。The main control circuit 5 to which power is supplied from the power supply control circuit 3 (by the second power supply control means)
First, check whether there is a shock experience signal (that is, whether a shock of a certain value or more was applied while the power was off)
, if there is a shock experience signal from the power supply control circuit 3,
The self-diagnosis program stored in the ROM 6 is executed (see FIG. 2(C) and FIG. 3(C)). When there is no shock experience signal from the power supply control circuit 3, the main control unit 5
performs normal processing.
主制御回路5は自己診断プログラムを実行してみて、異
常が無く回路は正常であると判断した場合には、電源制
御回路3に対して衝撃経験信号の保持解除信号及びR/
Wメモリカード7に対してアクセスインヒビット信号の
解除信号を出力する。The main control circuit 5 executes a self-diagnosis program, and if it determines that there is no abnormality and the circuit is normal, it sends a hold release signal of the impact experience signal to the power supply control circuit 3 and an R/R/
A release signal for the access inhibit signal is output to the W memory card 7.
また自己診断用時間監視タイマ4に対してタイマストッ
プ信号の出力を行なう(第2図(b)〜(e)を参照)
。そしてその後は通常の業務プログラムを実行する。It also outputs a timer stop signal to the self-diagnosis time monitoring timer 4 (see Fig. 2 (b) to (e)).
. After that, the normal business program is executed.
主制御回路5は自己診断プログラムを実行した結果、C
PUが暴走することはないが異常が発見された場合は、
自己診断用時間監視タイマ4に対してタイマストップ信
号を出力すると共に、回路異常が発生していることを電
源制御回路3を介して異常表示灯10の点灯や警報音の
発生などにより操作員に知らせる。As a result of executing the self-diagnosis program, the main control circuit 5
If the PU does not run out of control but an abnormality is discovered,
In addition to outputting a timer stop signal to the self-diagnosis time monitoring timer 4, the power supply control circuit 3 notifies the operator that a circuit abnormality has occurred by turning on the abnormality indicator lamp 10 or emitting an alarm sound. Inform.
主制御回路5が自己診断プログラムを実行したときにC
PUが暴走してしまった場合は、主制御回路5から自己
診断用時間監視タイヤ4に対してタイマストップ信号が
出力されないため、該タイマ4はあらかじめ設定された
時間を計数し終ったとき、電源制御回路3に対してタイ
ムアツプ信号を出力する。電源制御回路3はこのタイム
アツプ信号によりCPUが暴走していると判断し、異常
表示灯10を点灯すると共に主制御回路5、ROM6、
R/Wメモリカード7及びその他の110回路の電源を
オフにする(第3図(a) 、(c) 、(d)を参照
、またこの電源制御を第3の電源制御手段という)。操
作員はこのCPUが暴走する機器異常の場合に、R/W
メモリカード7を故障している機器から抜き出して別の
機器に移して保護するようにする。When the main control circuit 5 executes the self-diagnosis program, C
If the PU goes out of control, the main control circuit 5 will not output a timer stop signal to the self-diagnosis time monitoring tire 4, so the timer 4 will turn off the power when it finishes counting the preset time. A time-up signal is output to the control circuit 3. The power supply control circuit 3 determines that the CPU is running out of control based on this time-up signal, turns on the abnormality indicator light 10, and also turns on the main control circuit 5, ROM 6,
The power to the R/W memory card 7 and other 110 circuits is turned off (see FIGS. 3(a), (c), and (d); this power control is referred to as third power control means). In the event of a device error that causes the CPU to run out of control, the operator must
The memory card 7 is removed from the malfunctioning device and transferred to another device for protection.
なお、第4図の実施例において衝撃センサの一例を示し
たが、本発明における衝撃センサはこの方式に限定され
るものではなく、電子機器の筐体に加えられる力や、発
生する歪を検出する圧力センサや圧電素子などを用いて
衝撃力を検出するようにしてもよい。Although an example of a shock sensor is shown in the embodiment shown in FIG. 4, the shock sensor of the present invention is not limited to this method, and can detect the force applied to the casing of an electronic device or the strain that occurs. The impact force may be detected using a pressure sensor, a piezoelectric element, or the like.
[発明の効果コ
以上のように本請求項1に係る発明によれば、携帯用電
子機器に衝撃検出手段を設け、機器が動作中に前記衝撃
検出手段が検出した衝撃検出信号に基づき、前記携帯用
電子機器の給電されている書込み/読出し記憶回路を含
む主要回路への給電を断とする。また機器が非動中に検
出した衝撃検出信号は記憶しておき、再び前記書込み/
読出し記憶回路を含む主要回路への給電が開始された時
点で、前記書込み/読出し記憶回路へのアクセス禁止制
御を行ない、さらに前記主要回路が行なう自己診断用時
間をタイマ手段により計数してタイムアツプ信号が発生
された場合は、前記書込み/読出し記憶回路を含む主要
回路への給電を断とするようにしたので、下記の効果が
得られる。[Effects of the Invention] As described above, according to the invention according to claim 1, a portable electronic device is provided with a shock detection means, and the shock detection signal detected by the shock detection means is detected by the shock detection means while the device is in operation. Power is cut off to the main circuits of the portable electronic device, including the write/read storage circuits that are powered. In addition, the impact detection signal detected while the device is not moving is memorized, and the above write/write is performed again.
At the point when power supply to the main circuits including the read storage circuit is started, access to the write/read storage circuit is inhibited, and a timer means counts the time for self-diagnosis performed by the main circuit to generate a time-up signal. When this occurs, the power supply to the main circuits including the write/read storage circuit is cut off, so that the following effects can be obtained.
(1)機器が動作中の衝撃により自動的に回路の電源が
断となるため、回路の短絡や断線による焼損;CPUの
暴走及びメモリデータの破壊を防止できる場合が多い。(1) Since the power to the circuit is automatically cut off due to an impact while the device is operating, it is often possible to prevent burnout due to short circuit or disconnection of the circuit, runaway CPU, and destruction of memory data.
(2)操作員が知らない間に機器に加えられた衝撃も記
憶して表示されるので、操作員は電源を投入する前にメ
モリデータの保護処理を行なうことができる。(2) Since shocks applied to the equipment without the operator's knowledge are also stored and displayed, the operator can protect the memory data before turning on the power.
(3)衝撃を受けた機器は電源が供給された時点で機器
の自己診断を行ない、異常の場合は表示されるので操作
員は安心して機器を使用できる。またCPUが暴走の場
合に回路の電源の断によりメモリデータの破壊が防止さ
れる。(3) When the device receives a shock, it performs a self-diagnosis when power is supplied, and if there is an abnormality, it is displayed so that the operator can use the device with peace of mind. Furthermore, when the CPU goes out of control, the destruction of memory data is prevented by cutting off the power to the circuit.
また本請求項2に係る発明によれば、前記請求項1に係
る発明における前記携帯用電子機器の書込み/読出し記
憶回路を携帯用電子機器本体と着脱可能で、且つバック
アップ電池の装着された書込み/読出しメモリカード回
路としたので、故障が発生した機器本体から書込み/読
出しメモリカード回路を切離して、メモリデータの破壊
を防止すると共に装着電池からの給電によるメモリデー
タの保存を行ない得る効果がある。According to the invention according to claim 2, the write/read memory circuit of the portable electronic device according to the invention according to claim 1 is removable from the main body of the portable electronic device, and the write/read memory circuit is equipped with a backup battery. / Since it is a read memory card circuit, the write/read memory card circuit can be disconnected from the main body of the device where a failure has occurred, preventing memory data from being destroyed, and the memory data can be saved by supplying power from the installed battery. .
第1図は本発明に係る衝撃検出回路付携帯用電子機器の
一実施例を示すブロック図、第2図は本発明に係る自己
診断が正常時の動作タイムチャート、第3図は本発明に
係る自己診断が異常時の動作タイムチャート、第4図(
a)〜(C)は本発明に係る衝撃センサの一実施例の構
造及び原理を示す図、第5図は本発明に係る衝撃センサ
の取付図、16図は本発明に係る衝撃検出回路の詳細な
ブロック図、第7図(a)〜(e)は第6図の動作を説
明するための波形図である。
図において、1は衝撃センサ、2は衝撃検出回路、3は
電源制御回路、4は自己診断用時間監視タイマ、5は主
制御回路、6はROM、7はR/Wメモリカード、8は
電源スィッチ、9は衝撃表示灯、10は異常表示灯、1
1は永久磁石、12はムービングコイル、13はゴム材
の円板、14はセンサケース、15は信号出力線、16
は電子機器の筐体、21〜23はそれぞれy軸用、y軸
用、z軸周増幅器、24は加算器、25はしきい値設定
器、26は電圧比較器である。
特許出願人 沖電気工業株式命1土
本発明にsる自己を剣祈b1常阿の動作タ仏チャート売
2図
本発明j?原3自己計「がb゛興常時の動作史ムチヤー
ド兜3図
1 ; 有テ豐セレサ
16・fIl子涜1岱の償イ本
本発明1;傷る衝V七ンブα取付図
甥5図FIG. 1 is a block diagram showing an embodiment of a portable electronic device with an impact detection circuit according to the present invention, FIG. 2 is an operation time chart when self-diagnosis according to the present invention is normal, and FIG. 3 is a block diagram showing an embodiment of a portable electronic device with an impact detection circuit according to the present invention. The operation time chart when the self-diagnosis is abnormal is shown in Fig. 4 (
a) to (C) are diagrams showing the structure and principle of an embodiment of the impact sensor according to the present invention, Figure 5 is an installation diagram of the impact sensor according to the present invention, and Figure 16 is a diagram showing the impact detection circuit according to the present invention. The detailed block diagrams of FIGS. 7(a) to 7(e) are waveform diagrams for explaining the operation of FIG. 6. In the figure, 1 is an impact sensor, 2 is an impact detection circuit, 3 is a power supply control circuit, 4 is a self-diagnosis time monitoring timer, 5 is a main control circuit, 6 is a ROM, 7 is an R/W memory card, and 8 is a power supply Switch, 9 is shock indicator light, 10 is abnormality indicator light, 1
1 is a permanent magnet, 12 is a moving coil, 13 is a rubber disc, 14 is a sensor case, 15 is a signal output line, 16
21 to 23 are y-axis, y-axis, and z-axis frequency amplifiers, 24 is an adder, 25 is a threshold value setter, and 26 is a voltage comparator. Patent Applicant: Oki Electric Industry Co., Ltd. Life 1 Earth This Invention Self Sword Prayer B1 Chang'a's Movement Ta Buddha Chart Sales 2 Figure This Invention J? Original 3 Self-planning ``Ga b゛ Normal operation history Muchyard helmet 3 Figure 1; Arute Fung Ceresa 16・fil child sacrilege 1 Dai's redemption present invention 1; Damaged impact V Seven knob α installation diagram Nephew 5 figure
Claims (2)
帯用電子機器において、 常時給電され前記携帯用電子機器に所定値以上の衝撃が
加えられたことを検出する衝撃検出手段と、 常時給電される電源制御回路とを備え、 前記電源制御回路は、前記衝撃検出手段が検出した衝撃
検出信号に基づき、前記携帯用電子機器の給電されてい
る書込み/読出し記憶回路を含む主要回路への給電を断
とする第1の電源制御手段と、 前記衝撃検出手段が検出した衝撃検出信号を記憶し、衝
撃有無の情報を出力する衝撃情報記憶手段と、 前記携帯用電子機器の書込み/読出し記憶回路を含む主
要回路への給電を操作員の操作信号に基づき接/断とす
る第2の電源制御手段と、 前記第2の電源制御手段により前記書込み/読出し記憶
回路を含む主要回路への給電が開始され、前記衝撃情報
記憶手段が衝撃有りの情報を出力したときに、前記書込
み/読出し記憶回路へのアクセス禁止制御を行なうアク
セス禁止制御手段と、前記第2の電源制御手段により前
記書込み/読出し記憶回路を含む主要回路への給電が開
始され、前記衝撃情報記憶手段の衝撃有りの情報を出力
したときに、前記主要回路が行なう自己診断用時間を設
定し、直ちに時間経過を計数するタイマ手段と、 前記タイマ手段が設定された自己診断用時間を計数し終
ったとき出力するタイムアップ信号に基づき、前記書込
み/読出し記憶回路を含む主要回路への給電を断とする
第3の電源制御手段とを含むことを特徴とする衝撃検出
回路付携帯用電子機器。(1) In a portable electronic device equipped with a circuit that detects an impact applied to the device, an impact detection means that is constantly supplied with power and detects when an impact of a predetermined value or more is applied to the portable electronic device; and a power supply control circuit supplied with power, the power supply control circuit controlling main circuits including a write/read storage circuit supplied with power of the portable electronic device based on the shock detection signal detected by the shock detection means. a first power supply control means for cutting off the power supply; an impact information storage means for storing the impact detection signal detected by the impact detection means and outputting information on the presence or absence of an impact; and a write/read memory of the portable electronic device. a second power supply control means for connecting/disconnecting power supply to the main circuit including the circuit based on an operation signal from an operator; and a second power supply control means for supplying power to the main circuit including the write/read storage circuit by the second power supply control means. is started, and when the impact information storage means outputs information indicating that there is an impact, the access prohibition control means that performs access prohibition control to the write/read storage circuit and the second power supply control means control the write/read storage circuit. a timer that sets a self-diagnosis time to be performed by the main circuit and immediately counts the elapsed time when power supply to the main circuit including the readout storage circuit is started and the shock information storage means outputs information indicating that there is an impact; means, and a third power supply control for cutting off power supply to the main circuits including the write/read storage circuit based on a time-up signal outputted when the timer means finishes counting the set self-diagnosis time. A portable electronic device with a shock detection circuit, characterized in that it includes means.
、携帯用電子機器本体と着脱可能で、且つバックアップ
電池の装着された書込み/読出しメモリカード回路であ
ることを特徴とする請求項1記載の衝撃検出回路付携帯
用電子機器。(2) The write/read memory circuit of the portable electronic device is a write/read memory card circuit that is detachable from the main body of the portable electronic device and is equipped with a backup battery. A portable electronic device with a shock detection circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2276456A JPH04152268A (en) | 1990-10-17 | 1990-10-17 | Portable electronic equipment having shock detection circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2276456A JPH04152268A (en) | 1990-10-17 | 1990-10-17 | Portable electronic equipment having shock detection circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04152268A true JPH04152268A (en) | 1992-05-26 |
Family
ID=17569695
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2276456A Pending JPH04152268A (en) | 1990-10-17 | 1990-10-17 | Portable electronic equipment having shock detection circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04152268A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6272901B1 (en) | 1997-12-26 | 2001-08-14 | Nec Corporation | Detecting apparatus capable of detecting magnitude of shock and portable electronic appliance with the same |
JP2003060555A (en) * | 2001-08-10 | 2003-02-28 | Denso Corp | Portable apparatus and its power source system |
US6593855B2 (en) | 2000-06-29 | 2003-07-15 | International Business Machines Corporation | Shock measurement apparatus and shock measurement method |
US7042663B2 (en) * | 2002-10-03 | 2006-05-09 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic disk protection mechanism, computer system comprising protection mechanism, protection method for magnetic disk, and program for protection method |
JP2006519378A (en) * | 2003-02-07 | 2006-08-24 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Apparatus and ergometer for determining a value representing acceleration |
US7428119B2 (en) | 2005-10-19 | 2008-09-23 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic disk drive with head retraction control |
-
1990
- 1990-10-17 JP JP2276456A patent/JPH04152268A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6272901B1 (en) | 1997-12-26 | 2001-08-14 | Nec Corporation | Detecting apparatus capable of detecting magnitude of shock and portable electronic appliance with the same |
US6593855B2 (en) | 2000-06-29 | 2003-07-15 | International Business Machines Corporation | Shock measurement apparatus and shock measurement method |
JP2003060555A (en) * | 2001-08-10 | 2003-02-28 | Denso Corp | Portable apparatus and its power source system |
US7042663B2 (en) * | 2002-10-03 | 2006-05-09 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic disk protection mechanism, computer system comprising protection mechanism, protection method for magnetic disk, and program for protection method |
JP2006519378A (en) * | 2003-02-07 | 2006-08-24 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Apparatus and ergometer for determining a value representing acceleration |
US7428119B2 (en) | 2005-10-19 | 2008-09-23 | Hitachi Global Storage Technologies Netherlands B.V. | Magnetic disk drive with head retraction control |
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