JPH1196466A - Burglarproof terminal equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the burglary of an object by specifying the location of the object by transmitting accurate position data as needed without manual aid, promptly detecting an abnormal situation and automatically transmitting and outputting error information. SOLUTION: This equipment is provided with a portable telephone 6 for utilizing a radio telephone line L, a GPS reception antenna 3a for receiving GPS satellite signals, a GPS receiver 3b for calculating its own position from satellite signals (e), a sensor input means 4a for detecting an abnormal state, a signal limiting means for inhibiting sensor signals, a data control means 4 for reading the position data X and Y from the GPS receiver 3b, judging the abnormal state from the value of the position data and controlling the input and output of the data and a signal conversion means 5 for converting the position data X and Y to prescribed signals. The line is automatically connected at least corresponding to communication calling or the line is automatically connected by the judgement of the state of the sensor signals and the value of the position data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a terminal device for transmitting and outputting position data obtained by a GPS receiver using a wireless telephone line.

[0002]

2. Description of the Related Art Conventionally, a car navigation system has been provided with a GPS receiving antenna for receiving signals from GPS satellites and a GPS receiver for converting satellite signals into position data, and displays its own position on a display device together with a map. It has been known.

[0003] A car navigation device 30 shown in FIG. 8 includes a GPS receiving antenna 34, a GPS receiver 35, a control device 36, and a liquid crystal display 37, and is installed in a car 39.

Here, the satellite signal 31 from the GPS satellite 38
Are received by a GPS receiving antenna 34 and converted into position data 33 by a GPS receiver 35. This position data 3
Reference numeral 3 denotes a control device 36 which processes the map information 32 and outputs it to the liquid crystal display 37.

[0005] A car navigation device mounted on such a car obtains the current position (latitude and longitude) of the running car by receiving satellite signals from GPS satellites and displays the current position (latitude and longitude) on a map drawn on a display. It is a way to get to the destination from the location.

[0006] However, such a car navigation system has a structure in which a person at another place cannot be immediately informed of his / her position.

On the other hand, with the advance of information technology, mobile phones and P
Portable telephones such as an HS, a car telephone, and a portable terminal device have begun to spread. These mobile phones and the like allow a person to easily and verbally notify the location from a distance.

[0008] Therefore, it is conceivable that the information of the car navigation device is verbally transmitted to a person at another place by using the portable telephone.

In recent years, there has been known a recording device which records a traveling route with time using an output signal of a car navigation system utilizing the principle of GPS.

[0010] Such a device records, for example, the traveling path (location) with time, and thereby, the behavior of a person engaged in an outside work that cannot be managed, that is, a worker who drives a business vehicle or a transport vehicle. In addition to verbal communication via a mobile phone or the like, an attempt has been made to analyze the data of a recording device submitted to the office after returning to the office to accurately grasp the execution behavior and to use it for management.

In the above-described conventional position information transmission technique, position data obtained by a GPS receiver is output to a display device such as a monitor or a recording device such as an IC memory.
Or a person verbally announces whereabouts from a portable telephone.

[0012]

In the configuration using the above-mentioned conventional GPS function, data obtained by the GPS function is output to a display device or a recording device, and the position information is transmitted without human intervention. However, there is a problem that it cannot be performed.

That is, in the configuration using the conventional mobile phone, the location is verbally notified from the mobile phone by the intervention of a person, and the location can be intentionally falsely reported. Had a problem.

On the other hand, in the case where accurate position information cannot be transmitted quickly without the intervention of a person, there is a problem that the location of a completely unknown object cannot be specified.

[0015] That is, when construction equipment such as excavators left at night work sites or expensive objects such as high-end automobiles are stolen or lost, the only way to find them is to rely on witnesses. .

It is to be noted that a device for preventing theft using an electronic key or a buzzer sound is also conceivable. However, if the device is prevented from operating on the spot by being lifted and stolen by being rolled up by a lift device, or the device itself may be removed. In such a case, there is a problem that it is not possible to automatically detect the abnormal situation and transmit the position information and the error output immediately on the spot.

[0017] Therefore, it has been desired that such an anti-theft device automatically and promptly transmits position information and error information as needed when necessary without using a person.

According to the present invention, the location of an object is specified by transmitting accurate position information as necessary without the intervention of a person, and the error information is automatically transmitted to automatically detect and detect an abnormal situation. It is an object of the present invention to provide a terminal for preventing theft.

It is another object of the present invention to automatically and extremely easily detect an abnormal state without malfunction in response to the detection of a vehicle theft.

[0020]

SUMMARY OF THE INVENTION The anti-theft terminal of the present invention is intended to prevent the theft of a vehicle such as a construction machine or an agricultural machine in order to solve the above-mentioned problems of the prior art. Portable telephone using GPS, a GPS receiving antenna for receiving signals from a plurality of GPS satellites, and a GPS
A GPS receiver that calculates its own position from a satellite signal received by a receiving antenna and converts it to position data, sensor input means for inputting sensor signals from a plurality of sensors for detecting an abnormal state, and output from the sensor input means Signal limiting means for temporarily inhibiting a signal output applied to a part of the sensor signal to be read, and at least position data indicating its own position from a GPS receiver, and judging whether or not an abnormal state exists from the value of the position data And data control means for controlling the input and output of data, and signal conversion means for converting the position data input from the data control means into a signal of a predetermined format that can be transmitted and output via a portable telephone, Automatically connect the line at least according to the call, or the state of the sensor signal and position data value obtained from the sensor input means The determination, performs line connection with the automatic to the telephone line which is set in advance, and characterized in that for transmitting the output of the position data via a wireless telephone line.

Further, the signal limiting means is used to turn on / off the engine.
It is preferable to detect an FF, and determine that an abnormal state has occurred when the value of the position data obtained from the GPS receiver indicates movement outside the period of temporary inhibition when the engine is turned on.

Further, it is erroneous that the signal limiting means for temporarily inhibiting the signal output applied to a part of the sensor signal is performed during the operation of the engine of the vehicle or performed within a predetermined time zone. Will be prevented.

The signal output of the acceleration sensor for detecting the inclination angle and the acceleration is temporarily inhibited by the signal limiting means, or the signal output of the vibration sensor provided on the door for detecting the impact or vibration is limited. Preferably, it is temporarily inhibited by means.

[0024]

FIG. 1 shows an embodiment of the present invention.
This will be briefly described with reference to FIGS. The anti-theft terminal 1 of the embodiment is for preventing a vehicle such as a construction machine or an agricultural machine from being stolen, and receives signals from a mobile phone 6 using a wireless telephone line L and a plurality of GPS satellites 20. GP to do
An S receiving antenna 3a, a GPS receiver 3b for calculating its own position from a satellite signal e received by the GPS receiving antenna 3a and converting it into position data (latitude X, longitude Y), and a plurality of sensors for detecting an abnormal state A sensor input means 4a for inputting a sensor signal from the sensor input means 2, a signal limiting means H for temporarily inhibiting a signal output applied to a part of the sensor signal output from the sensor input means 4a, and a GPS receiver 3b.
And data control means 4 (controller) for reading at least position data X and Y indicating its own position, determining whether or not an abnormal state exists based on the value of the position data, and controlling data input / output. Signal conversion means 5 for converting the input position data X, Y into a signal of a predetermined format that can be transmitted and output via the mobile phone 6, and automatically establishes a line connection at least in response to a telephone call; or By judging the state of the sensor signal obtained from the sensor input means 4a and the value of the position data, the line is automatically connected to the telephone line set in advance by the switch 4b, and the transmission output of the position data is transmitted via the wireless telephone line L. Is what you do.

Signal limiting means (engine ON signal)
H during the period of temporary inhibition (engine OF
If the value of the position data obtained from the GPS receiver 3 indicates movement during the period (F), it is determined that the state is abnormal.

Further, the signal output of the acceleration sensor AV for detecting the inclination angle and the acceleration is temporarily inhibited by the signal limiting means (engine ON signal) H during the operation of the engine of the vehicle. Similarly, the signal of the vibration sensor AE for detecting shock and vibration provided on the cabin door of the vehicle is also transmitted in a predetermined time period (while the timer is stopped).
Are configured to be temporarily inhibited.

(Operation) With the above configuration, the present invention can perform the following operation. That is, the above GPS
The GPS receiver 3b provided with the receiving antenna 3a receives a satellite signal (C / A code or the like) e from a plurality of artificial satellites 20. The GPS receiver 3b converts the satellite signal e into position data X and Y including at least latitude (north latitude), longitude (east longitude) and the like.

Then, a line connection is automatically made at least in response to a telephone call, or a line connection is made by judging a state of a sensor signal and a value of position data obtained from the sensor input means 4a. Data transmission and output.

Therefore, even if the location is completely unknown, by automatically connecting the line in response to the call, the location of the user is transferred to the called and connected wireless telephone line. Immediate and automatic signal conversion means 5
Can be transmitted.

Further, when an abnormal situation occurs, the state of the sensor signal obtained from the sensor input means 4a and the value of the position data are determined to establish a line connection to a telephone line previously set by the switch 4b or the like. And the error number can be automatically transmitted and output immediately.

Therefore, the receiver who receives this error number can recognize "where" and "what happened", and can immediately take a countermeasure action to prevent theft.
We can measure theft prevention.

On the other hand, the signal output of the acceleration sensor AV for detecting the inclination angle and the acceleration is output during the operation of the engine of the vehicle.
If the signal is temporarily inhibited by the signal limiting means (engine ON signal) H, the malfunction output signal of the acceleration sensor AV due to the operation during work is inhibited.
For example, an abnormal state can be detected by detecting a change in the inclination angle or a change in the acceleration signal only when the engine is off (night-standby state).

That is, while the engine is driven, the vehicle itself operates for work, so that the acceleration sensor AV
Will malfunction.

Therefore, the acceleration sensor AV is used only while the work is not performed (the engine is off).

Also, when the loaded vehicle is carried by a tow truck or the like, the engine of the loaded vehicle is turned off during transportation. An abnormal state can be detected.

Further, a signal from a vibration sensor AE for detecting a shock or a vibration provided on the cabin door of the vehicle is also configured so that the signal can be temporarily inhibited during a predetermined time period (for example, when the timer is stopped) H. For example, by setting the inhibit release time after the work is completed, it is possible to detect the impact or vibration of the cabin door portion that occurs when trying to enter the vehicle without malfunction.

That is, by setting data for 6h until the next morning after the work is completed and operating the timer, during this time (at night), theft can be detected by utilizing the sensor signal. The timer data may be set to 168h, for example, if the work is not performed for one week.

Also, even if the vehicle is caught and loaded on a tow truck without touching the vehicle door during the operation of the timer, an abnormal condition can be detected by capturing the vibration during loading and the vibration during traveling on the road surface.

On the other hand, signal limiting means (engine ON signal)
H during the period of temporary inhibition (engine OF
If the value of the position data obtained from the GPS receiver 3 indicates movement during the period (F), if the position is determined to be abnormal, the value of the position data cannot be changed by turning off the engine. It can be easily determined that the vehicle is being transported.

As described above, by controlling the sensor signal by the signal limiting means H, an abnormal state can be detected very easily without malfunction, and the own location and error number can be automatically transmitted and output immediately.

The tracking terminal device 1 according to the present invention transmits accurate position information as needed without human intervention, specifies the location of the object, and automatically detects an abnormal situation to automatically detect the situation. It is effective in transmitting and outputting error information to prevent theft of an object.

Further, in response to the detection of the theft of the vehicle, the detection of the abnormal state can be realized very easily and automatically without malfunction.

[0043]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 7 show an embodiment of the present invention, in which the machine 1 is applied to prevent theft of a construction machine (shovel car). 1 is a sensor 2, G
Controller (data control means) 4 having PS receiving antenna 3a, GPS receiver 3b, sensor input means 4a, mode selection switch 4c, sensor selection switch (and digital switch 4b), voice synthesis memory (ROM) 5
a, a voice synthesizing IC 5b and a mobile communication modem 5c; a signal conversion means 5; a mobile phone 6; Although the main body 1a of the anti-theft terminal 1 is omitted for convenience of illustration, it is fixedly installed in a cabin of a construction machine (shovel car) so as to be inconspicuous.
The sensor input means 4a is provided with a sensor mechanism for sensing a state of a signal provided outside the main unit 1.

FIG. 2 shows the configuration of the sensor 2 provided outside. The sensor input means 4a of the main body 1a includes a Hall sensor S1 for detecting the installation state of the body 50 and the main body 1a, and a hall sensor S1. A battery sensor S2 for detecting the power supplied to the vehicle and a power sensor S3 for detecting the power supplied to the GPS sensor 3 are provided, and the permanent magnet S1a to be targeted, the vehicle battery BV, and the GPS receiver are respectively provided. 3 is interrupted.

The abnormal situation is detected by the sensor signal, so that when the thief knows the existence of the machine 1 and removes the machine 1, it becomes difficult to perform normal location tracking. It is determined that an abnormal situation has occurred at the appropriate timing.

The acceleration sensor shown at S4 in FIGS. 2 and 3 detects an inclination angle and an acceleration.
The signal output A4 of V is the power switch ON of FIG.
During the engine operation of the vehicle, the relay contact Ry-1 (B contact) indicated by Ry in FIG. 5B is turned off and the engine ON signal H2 is opened,
The signal is temporarily inhibited by the signal limiter H.

The acceleration sensor AV shown in FIG. 3A outputs a signal indicated by AV in FIG. 3B in an acceleration state. The signal rectified by the diode D and exceeding the zener voltage DVZ is amplified by the AMP and processed into a signal indicated by A4 in FIG.

The validity of the signal A4 is determined in pairs with the signal indicated by H2 in FIG. 5B. That is, the configuration is such that H2 is valid only during L (low) (during engine OFF).

That is, since the vehicle itself operates for work while the engine is driven, the acceleration sensor AV
Will malfunction. Therefore, the acceleration sensor AV is used only while the work is not performed (the engine is off).

Also, when the loaded vehicle is carried by a tow truck or the like, the engine of the loaded vehicle is turned off during transportation. An abnormal state can be detected. Further, the signal of the vibration sensor AE for detecting shock and vibration provided on the cabin door 50a of the vehicle shown in FIG. 2 is also out of time (during timer stop) determined by the timer data in FIG. H1 is configured to be open, and is temporarily inhibited by the signal limiter H.

Therefore, the vibration sensor AE shown in FIG.
Outputs a signal indicated by AE in FIG. The signal rectified by the diode D and passed through the variable resistor VR is amplified by the AMP, integrated by the capacitor C, and processed into a signal indicated by A5 in FIG.

The validity of the signal A5 is determined in pairs with the signal indicated by H1 in FIG. 5A. That is, the configuration is such that H1 is valid only during L (low) (during timer ON).

That is, 6 hours from the end of the work until the next morning.
By setting (time) as data and operating the timer, during this time (at night), theft can be detected by utilizing the sensor signal. The timer data may be set to 168h, for example, if the work is not performed for one week.

Further, even if the vehicle is caught and loaded on a tow truck without touching the door of the vehicle during the operation of the timer, the abnormal state can be detected by capturing the vibration during loading and the vibration during traveling on the road surface.

On the other hand, signal limiting means (engine ON signal)
H during the period of temporary inhibition (engine OF
If the value of the position data obtained from the GPS receiver 3 indicates movement during the period (F), if the position is determined to be abnormal, the value of the position data cannot be changed by turning off the engine. It can be easily determined that the vehicle is being transported.

As described above, by controlling the sensor signal by the signal limiting means H, it is possible to detect the abnormal state without any malfunction and to immediately transmit and output its own position and error number immediately and automatically.

The operation of judging the signal limiter H is actually configured to operate after a time lag of 5 to 10 minutes, and is devised so that an error does not occur immediately after the operation.

The GPS receiving antenna 3a is composed of a plurality of GPS orbits which make a circular orbit of about 20,000 km on the earth in about 12 hours.
Satellite signals (signals called C / A codes subjected to spread spectrum modulation) transmitted from the artificial satellite 20 are received. The received signal e is input to the GPS receiver 3b, and the data output from the GPS receiver 3b is converted by the controller 4 into position data X, Y or the like.

The principle of this GPS receiver is described in, for example, JP-A-5-281330 and JP-A-5-7231.
No. 6 or GPS introduction guide: Since it is introduced in Nikkan Kogyo Shimbun, etc., a detailed description is omitted in this application for the sake of writing.

The controller 4 shown in FIG. 1 automatically establishes a line connection in response to an external telephone call, or determines a state of a sensor signal and a value of position data obtained from the sensor input means 4a by the method described above. Thus, a control command for making a line connection at any one of whether to automatically make a line connection to a telephone line set in advance by the switch 4b is output to the control terminal 5d of the mobile phone 6.

The switch 4b indicated by oblique lines in FIG.
Once set at the time of delivery, the data (telephone number D1, terminal number N1, range data X1,
Y1, the moving distance Z, etc.) are saved, and thereafter, may be removed as long as there is no data change. Further, although the controller 4 is omitted in FIG.
The system includes an OM, a RAM, an EEPROM, an I / O, a timer, and the like, and automatically controls line connection and data transmission. Therefore, the timer data and the like shown in FIG.
The signal limiter H1 may be created by a PU internal timer or the like.

Hereinafter, a case where audio data is output will be described. When outputting audio data, the signal conversion means indicated by 5 in FIG. 1 outputs audio data via 5a and 5b.

Thus, the output of the position data X, Y, etc.
The signal is first processed by a signal conversion means 5 for converting into a signal (voice) of a predetermined format that can be transmitted and output from an earphone jack 5c of the mobile phone 6, and then output.

Here, when the above-mentioned abnormal condition occurs, first, the controller 4 refers to the data (position data X, Y, etc.) periodically read from the GPS receiver 3b to determine the predetermined data. (Terminal number, time, east longitude, north latitude, altitude, error number), and outputs preset telephone number data D1 to the control terminal 5d of the mobile phone 6 via the mobile communication modem 5c to automatically To make a line connection (call).

When the telephone line is connected, an address map that matches the voice data of the voice synthesis memory (ROM 5a) is calculated from the output data, and the voice synthesis IC 5b is accessed to sequentially set the address of the ROM 5a. , ROM 5a sequentially outputs designated data. This data is read into the voice synthesis IC 5b and restored to an analog signal.

For example, if the numerical data is 50.0, the controller 4 first obtains the address where the voice data of "go" is stored, and then sequentially obtains "10", "Ten", and "Zero". The address of the voice data corresponding to the numerical data is output to the voice synthesis IC. After the data of the ROM 5a stored at this address is sequentially read out by the voice synthesis IC 5b and converted into an analog signal (voice signal),
It is output to the module jack 5c of the mobile phone 6.

Data transmitted and output in the form of an analog voice signal from the antenna 6a of the mobile phone 6 via the radio telephone line L (the data transmission format is the type of the mobile phone 6 (analog transmission type, digital transmission type)
Depends on. ) Is a preset telephone number D1 in FIG.
Is output as voice from the receiver 40a of the telephone indicated by reference numeral 40.

In the called telephone 40, the receiver 40a
From "here (terminal number N1) ...", "time ...
"", "North latitude ...", "East longitude ...", "Altitude ...
・ ”,“ Error ... ”can be heard directly by voice.

As described above, the abnormality can be automatically detected, and the location and error number can be automatically transmitted and output immediately. Therefore, the receiver who has received the error number can recognize "where" and "what happened", and can immediately take an antitheft countermeasure action to prevent theft.

On the other hand, the function of automatically making a line connection in response to an external telephone call controls effective means for tracking the machine 1 that has become completely unknown.

For example, when a shovel car on which the machine 1 is mounted without any abnormal condition is stolen by a tow truck or the like, the owner of the shovel car first calls the mobile phone 6 from a general subscriber telephone (telephone). multiply).

Accordingly, the controller 4 detects a call signal from the control terminal 5d of the mobile phone 6 via the mobile communication modem 5c and automatically establishes a line connection.

Then, by referring to data (position data X, Y, etc.) periodically read from the GPS receiver 3b, predetermined data (terminal number, time, east longitude,
(North latitude, altitude, error number) and an address map matching the voice data in the voice synthesis memory (ROM 5a) from each output data.
5b is accessed to output voice data to the telephone connected to the line in the same manner as described above. In this case, the error number is “0” or omitted.

As described above, even if the location of the device 1 is completely unknown, the unknown device 1 is called, and the location of the device 1 itself is automatically determined via the wireless telephone line. Transmission output can be performed immediately.

Although a detailed description is omitted for the sake of convenience in writing, a configuration may be adopted in which a command sent from a telephone connected to a line is analyzed, and operation is performed according to the command.

On the other hand, when the controller 4 detects that the position data X, Y and the like obtained from the GPS receiver 3b (GPS sensor 3) cannot be read at all, or when the controller 4 moves When the magnitude of the distance Z is larger than the preset value Z1, or when the position data X and Y are within the preset range X
When the state exceeds 1, Y1, the line is automatically connected to the telephone line (telephone number D1) set in advance by the switch 4b, similarly to the abnormal processing of the sensor signal.

As described above, the position data X and Y read by the GPS sensor (GPS receiving antenna 3a + GPS receiver 3b) 3 also detect that the vehicle is stolen and determine that the vehicle is in an abnormal state. The line is automatically connected to the set telephone line (telephone number D1).

When FAX data is output, the FAX data is output from the signal conversion means 5 shown in FIG. 1 via 5c, and the position data and the like are transmitted as character data to a device having a FAX function. Is what you do.

The controller 4 outputs the FA from the output data.
An address map matching the X data is calculated, and the data of the memory address is output to the mobile communication modem 5c.

The mobile communication modem 5c has a preset F
The line is automatically connected to the AX number D1, and error correction and data compression are performed.
Outputs X data.

Reference numeral 41 shown in FIG. 7 denotes a facsimile apparatus provided at the transmission destination line number (telephone number D1).

N (terminal number N)
1) = ..., "T (time) = ...", "X (north latitude) = ...", "Y (east longitude) = ...", "H (altitude) = ..." , "E (error) = ..." are sequentially printed.

As described above, in this mode, reliable position data X and Y can be easily transmitted to any other party by FAX data which cannot be processed by humans, not by oral transmission which lacks reliability.

In this embodiment, an example is shown in which N (terminal number), T (time), X (north latitude), Y (east longitude), H (altitude), and E (error) are transmitted and output. If at least position data indicating latitude and longitude such as X (north latitude) and Y (east longitude) are included, data such as a moving direction may be added, or a format of any combination may be used. In addition, the GPS antenna 3a and the GPS receiver 3b indicated by a dotted line portion 3 in FIGS. 1 and 6 may be a separated type or an integrated type. Further, the signal converting means 5 such as the mobile communication modem 5c and the voice synthesizing functions 5a and 5b may have a configuration in which the functions are provided in the controller 4 and the GPS receiver 3b. That is, the present invention is not limited to the above embodiments, and various modifications are possible based on the spirit of the present invention, and these are not excluded from the scope of the present invention.

[0085]

According to the present invention, accurate location information is transmitted as necessary without human intervention to specify the location of an object, and an abnormal situation is immediately detected to automatically transmit error information. It is possible to provide a terminal that outputs and prevents a thing from being stolen.

Further, in response to the detection of the theft of the vehicle, the detection of the abnormal state can be realized very easily automatically without malfunction.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a configuration diagram showing an external sensor.

FIG. 3 is an acceleration sensor, wherein (a) is a circuit diagram, and (b) is a circuit diagram.
Waveform diagram.

FIG. 4 is an AE sensor, in which (a) is a circuit diagram and (b) is a waveform diagram.

FIGS. 5A and 5B are configuration diagrams showing signal restriction hands. FIGS.

FIG. 6 is a conceptual diagram showing an example of audio output.

FIG. 7 is a conceptual diagram showing a facsimile output example.

FIG. 8 is a configuration diagram showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Anti-theft terminal 2 Sensor S1 Hall sensor S2 Battery sensor S3 Power sensor 3 GPS sensor 3a GPS receiving antenna 3b GPS receiver 4 Data control means (controller) 4a Sensor input means 4b Digital switch 4c Mode selection means (jumper switch) 4d Sensor selection means (jumper switch) 5 Signal conversion means 5a Voice synthesis memory (ROM) 5b Voice synthesis IC 5c Mobile communication modem 6 Mobile phone 7 Battery battery 20 GPS satellite e Satellite signal X, Y Position data (latitude X, longitude) Y) L wireless telephone line H signal limiting means AV acceleration sensor AE vibration sensor

──────────────────────────────────────────────────の Continued on front page (51) Int.Cl. ⁶ Identification code FI H04B 7/26 109T

Claims (6)

[Claims] 1. A portable telephone using a wireless telephone line, a GPS receiving antenna receiving signals from a plurality of GPS satellites, and a vehicle for preventing theft of a vehicle such as a construction machine or an agricultural machine. A GPS receiver that calculates its own position from a satellite signal received by a GPS receiving antenna and converts it to position data, a sensor input unit that inputs sensor signals from a plurality of sensors that detect an abnormal state, and a sensor input unit. Signal limiting means for temporarily inhibiting a signal output applied to a part of the sensor signal to be output; and reading at least position data indicating the own position from the GPS receiver, and determining whether an abnormal state is detected based on the position data value. Data control means for determining the input and output of data and transmitting position data input from the data control means via a portable telephone Signal conversion means for converting the signal into a signal of a predetermined format that can be input, and automatically making a line connection at least according to a telephone call, or a state of a sensor signal obtained from the sensor input means and a value of position data value. An anti-theft terminal characterized in that a line is automatically connected to a preset telephone line by a determination, and the position data is transmitted and output via a wireless telephone line. 2. The method according to claim 1, wherein the signal limiting means is for turning on / off the engine.
2. The anti-theft system according to claim 1, wherein when the value of the position data obtained from the GPS receiver indicates a movement outside the period in which the engine is temporarily turned off when the engine is turned on, the state is determined to be abnormal. Terminal. 3. The anti-theft terminal according to claim 1, wherein signal limiting means for temporarily inhibiting a signal output applied to a part of the sensor signal is performed during operation of the engine of the vehicle. 4. The anti-theft terminal according to claim 1, wherein signal limiting means for temporarily inhibiting a signal output applied to a part of the sensor signal is performed within a predetermined time zone. 5. The anti-theft terminal according to claim 1, wherein a signal output of an acceleration sensor for detecting an inclination angle and an acceleration is temporarily inhibited by a signal limiting means. 6. The anti-theft terminal according to claim 1, 3 or 4, wherein a signal output of a vibration sensor for detecting an impact or vibration provided on the door portion is temporarily inhibited by a signal limiting means.