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參數(shù)資料
| 型號： | AS8413 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 消費家電 |
| 英文描述： | HIGH PERFORMANCE AUTOMOTIVE SONAR INTRUSION |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP24 |
| 封裝： | DIP-24 |
| 文件頁數(shù)： | 12/15頁 |
| 文件大?。?/td> | 125K |
| 代理商： | AS8413 |
High Performance Automotive Sonar Intrusion – Data Sheet
AS8413
March 2001
Page 12 of 15
VDD
WARN
DON’T CARE
DON’T CARE
t
s td
t
o f f
t
o n n
VDD
WARN
DON’T CARE
DON’T CARE
t
o n n
t
o f f
t
s t d
( a )
( b )
s t w
t
Fig. 6
(a) Self-Test OK
(b) Error at Self-Test
Alarm Signalling
The AS8413 can indicate not only intrusion or motion, but also other kinds of disturbance, and
send a particular message for each situation. Those disturbances are defined as follows and the
messages are identified at Table 3.
Weak intrusion: early stages of an intrusion, or a weaker intrusion or movement. Detection
criteria are similar to those for intrusion, but with higher sensitivity.
Blockage: elimination of the coupling between the transducers, either by blocking one of
them, or by cutting a wire.
Saturation: very strong 40-kHz signal at RX, possibly an attempt to sabotage the alarm sys-
tem by saturating the receiver. May also be caused by a glass breakage or by strong hits with
hard objects at the glass.
With this signalling scheme, the IC has flexibility to be used either in simpler applications or in
sophisticated microprocessor based systems. In addition, the manufacturer has the option to
choose which kind of disturbance should be an alarm condition.
The pulse widths are those specified in the AC electrical Characteristics and shown in Fig. 7. At
ALARM and WARN they are at least 200ms; the outputs remain active if intrusion or motion per-
sists.
The WARN output could be used instead of the ALARM, if only intrusion detections should be
flagged. In this case, the digital sensitivity should be scaled one step ower (for instance from
mid-high to mid-low), or the capacitor at VCAP increased, to keep approximately the same sen-
sitivity.
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| AS8424-A | 制造商:Coilcraft Inc 功能描述:DSL transformer, for AD20MSP910/918, not RoHS |
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| AS8426-A | 制造商:Coilcraft Inc 功能描述:DSL transformer, for Alcatel MTK-20140, not RoHS |
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| AS8446 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Programmable PWM DC Motor Driver / Controller |
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