JPH0446846A - Security device - Google Patents

Abstract

PURPOSE:To improve the operability of the siren type security device for a vehicle in the title by setting a silent time band, and actuating a siren only when an error in other than the silent time band is detected. CONSTITUTION:When a time band enable key 12c is pressed, a processor 11a displays a silent-on time and a silent-of time on a display section 13, if a silent time band is set. A ten-key pad 12d, therefore, is used for changing the silent time band or setting a new time band. When an error is detected with sensors 21 to 24 during the operation of the security device, the processor 11a makes judgement as to whether an error generation detection time is within the silent time band. If the detection time is within the silent time band, the processor 11a does not actuates a silent driver 31, but only causes light flickering with a light driver 32 and engine startup disable with an engine control section 33. On the other hand, the silent driver 31 is actuated to sound a siren, if the aforesaid time if outside the silent time band.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a security device for a vehicle, and particularly to a security device that sounds a siren when an abnormality occurs.

<Prior art> An anti-theft device (a security device) is an anti-theft device that prevents a car from being stolen (an anti-theft device is an anti-theft device that prevents someone from opening the car door, giving a considerable shock to the car, or opening the trunk in order to steal the car while the security system is activated). If a person enters the vehicle, a sensor detects this and sounds a siren or flashes the vehicle's headlights to warn of an abnormality, and also cuts the starter (prevents the engine from starting) or To prevent theft by cutting fuel and making the car inoperable.

By the way, in residential areas, sirens sounding at night can be a nuisance to the neighbors. For this reason, conventional security devices have a function that allows the siren to be turned on or off, and when the siren is turned off, the siren does not sound even if an abnormality is detected.

<Problem to be solved by the invention> However, with conventional security devices, when parking in a densely populated area at night, the siren is turned off by operating the siren on/off switch each time, and the siren is turned off in the morning or during the day.・There was a problem that it was necessary to turn it on, which made operation cumbersome.

From the above, it is an object of the present invention to provide a security device that can automatically disable a siren at a predetermined time at night without having to turn the siren on/off.

Means for Solving the Problems> In the present invention, the above problems are solved by providing a sensor for detecting the occurrence of an abnormality, a siren for warning of the occurrence of an abnormality, a means for setting a silent time period, and a means for setting a time period for detecting the occurrence of an abnormality during the silent period. This is accomplished by means of determining whether or not the siren is activated.

Function> A silent time period is set in advance, and if the time when the sensor detects the occurrence of an abnormality is within the silent time period, the siren is not sounded, and when it is outside the silent time period, the siren is sounded. By doing so, the siren can be automatically turned off during a predetermined time period at night without having to operate the siren on/off switch each time.

<Embodiment> FIG. 1 is a block diagram of a security device according to the present invention.

In the figure, 1 is the main body of the security device, 2 is an abnormality detection unit that detects an abnormality that occurs in the car, and 3 is a theft prevention unit that warns about preventing money from being separated.

In the security device main body 1, 11 is a security control unit configured with a microcomputer, which includes a processor lla, a program memory llb, and a battery-backed data memory li for storing silent time periods, etc., which will be described later.
It has e.

Reference numeral 12 denotes an operation unit provided with various keys, including an arming key 12a for setting the security operating state, a disarming key 12b for canceling the security operating state, and setting the silent time period (silent on time Tsn and silent off time Tsf). It includes a time zone setting enable key 12C, a numeric keypad 12d, etc., which are operated at times. Note that the silent period is a period in which the siren is not sounded even if an abnormality is detected, and if an abnormality is detected during this period, the siren is not sounded and the abnormality is detected outside of this period. Sound the siren only when

Reference numeral 13 denotes a display unit, and 624, which displays a silent time period as appropriate, is a timer, which monitors the current time and the elapsed time from a predetermined time.

In the detection unit 2, 21 is a door opening sensor that detects the opening and closing of a door, 22 is a trunk opening/closing sensor that detects opening and closing of the trunk, 23 is a vibration sensor that detects vibrations of a predetermined amplitude or more applied to the car, and 24 is a This is an ignition sensor that detects whether the ignition switch is on or off.

In the theft prevention unit 3, 30 is a siren generator that generates a siren, 31 is a siren driver, and when an abnormality is detected by each sensor during security operation, the control unit 1
The siren generator 30 is driven by the siren opening signal SDR output from the siren generator 1. Reference numeral 32 denotes a light driver, which causes the headlights to blink in response to a blinking activation signal BLD output from the control unit 11 when an abnormality is detected. 33
1 is an engine control unit, and when an abnormality is detected during the security operation, an engine start cut or a fuel cut is performed in response to a signal ESP output from the security control unit 11 to prohibit starting of the engine.

Below, the operation by the security device of the present invention will be described as (1)
The explanation will be divided into the operation of setting, changing, and checking the silent time period, and (2) the siren control operation when an abnormality occurs.

Silent Time Zone Setting, Confirmation Operation To set, change, or confirm the silent time zone, press the time zone setting enable key 12C. When the key 12c is pressed, the processor lla starts the silent on time T if the silent time zone has already been set.
sn and silent off time Tsf in data memory llc
is read out and displayed on the display unit 13, and if it is not set, for example, r −: −: J is displayed.

If nothing is done after pressing the time zone setting enable key 12c, the above display will be displayed for a predetermined time T and then disappear (in case of confirmation).

On the other hand, if the user wishes to set or change the silent time period, the user operates the numeric keypad 12d within the above-mentioned time T and sequentially inputs the silent on time Tsn and the silent off time Tsf. As a result, the processor lla displays the input new silent on time and silent off time on the display unit 13, stores them in the data memory llc, and ends the control for setting and changing the silent time period.

Siren control operation during normal operation Next, siren control when an abnormality occurs will be explained with reference to the flowchart in FIG. 2 and the time chart in FIG. 3.

When security is activated (when arming), sensors 21 to 2
When an abnormality is detected by 4, the security control unit 11
The processor lla checks whether the abnormality occurrence detection time is within the silent time zone (step 101), and if it is within the silent time zone, does not sound the siren and resumes arming after a predetermined time Ta has elapsed (period T1 in FIG. 3). reference)
. still.

If an abnormality is detected, controls such as flashing the headlights and prohibiting engine starting are performed.

. . . Steps 102 to 104 On the other hand, if the abnormality occurrence detection time is outside the silent period, the siren drive signal SDR is output and the siren generator 30
generate Ta siren for a predetermined time (step 1.0
5, 106), the siren is stopped after the elapse of this time (Step 107), and after the L is turned off, arming is resumed (Step 104, see period T2 in FIG. 3).

From the above, - degree silent time period T sn” T sf
By setting the siren, you can prevent the siren from sounding at that time every day. Furthermore, in places such as recreational areas where the siren may be sounded even at night, the siren can be made to sound at all times by clearing the silent time period.

Although the case has been described in which the silent time zone is set so that the siren does not sound at night, the silent time zone may be set during the daytime. Moreover, although the case where one silent time period is set has been described, it is also possible to configure so that two or more silent time periods are set.

<Effects of the Invention> According to the present invention, a silent time period is set, and when the abnormality occurrence detection time is within the silent time period, the siren is not sounded, and when it is outside the silent time period, the siren is sounded. Therefore, once the silent time period is set, the siren can be automatically and reliably prevented from sounding during that time period, improving operational performance.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the security device of the present invention, FIG. 2 is a flowchart of siren control, and FIG. 3 is a time chart of siren control. 1...Security device main body 11a...Security control unit, 12c...Time zone setting enable key 2...Abnormality detection unit, 30...Siren generator, 31...
Siren Driver Patent Applicant Alpine Co., Ltd. Agent Patent Attorney Chiki Saito Figure 2 Figure 3

Claims (1)

[Claims] In a security device that prevents vehicle theft by sounding a siren for a predetermined period of time when a sensor detects the occurrence of an abnormality, a silent time period is set and the time when the sensor detects the occurrence of an abnormality is set. . A security device, characterized in that the siren does not sound when it is within the silent time period, and it sounds the siren when it is outside the silent time period.