Method and device for the detection of the separation of an electronic module from a vehicle to which it is mounted
First Claim
1. A method of detecting separation of an electronic module (1) from a vehicle on which the module is mounted, comprising the steps of:
- associating with the module (1) an inductance (17;
31;
41) inseparable from said module, the inductance (17;
31;
41) and the module (1) connected to the vehicle in an immediate vicinity of an element (18;
38;
43) made of ferromagnetic material and connected to the vehicle,monitoring one of i) a magnetic parameter of the inductance, ii) a current passing through the inductance, and iii) a voltage at terminals of the inductance (17;
31;
41) so as to detect any variation of the monitored one of the magnetic parameter, the current, and the voltage,detecting a variation of the monitored one of the magnetic parameter, the current, and the voltage,determining the detected variation is greater than a predetermined variation threshold being representative of a relative distance between the inductance (17;
31;
41) and the element made of ferromagnetic material (18;
38;
43) and thereupon ordering an emission of a signal indicating separation of the module (1) from the element of the vehicle,wherein the inductance (17;
31;
41) is polarized by a current source (15;
32;
44) connected so as to power said inductance.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of detecting the separation of an electronic module (1) from a vehicle on which the module is mounted. According to this method, the module (1) has associated with it an inductance (17) inseparable from the module, the inductance (17) and the associated module (1) are connected to an element of the vehicle, in the immediate vicinity of an element (18) made of ferromagnetic material, the current passing through the inductance (17) is measured (monitored), so as to detect any variation of current and, when a current variation greater than a predetermined variation threshold is detected, representative of a relative distance between the inductance (17) and the element made of ferromagnetic material (18), there is ordered the emission of a signal indicating the separation of the module (1) associated with the inductance from the vehicle.
22 Citations
19 Claims
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1. A method of detecting separation of an electronic module (1) from a vehicle on which the module is mounted, comprising the steps of:
-
associating with the module (1) an inductance (17;
31;
41) inseparable from said module, the inductance (17;
31;
41) and the module (1) connected to the vehicle in an immediate vicinity of an element (18;
38;
43) made of ferromagnetic material and connected to the vehicle,monitoring one of i) a magnetic parameter of the inductance, ii) a current passing through the inductance, and iii) a voltage at terminals of the inductance (17;
31;
41) so as to detect any variation of the monitored one of the magnetic parameter, the current, and the voltage,detecting a variation of the monitored one of the magnetic parameter, the current, and the voltage, determining the detected variation is greater than a predetermined variation threshold being representative of a relative distance between the inductance (17;
31;
41) and the element made of ferromagnetic material (18;
38;
43) and thereupon ordering an emission of a signal indicating separation of the module (1) from the element of the vehicle,wherein the inductance (17;
31;
41) is polarized by a current source (15;
32;
44) connected so as to power said inductance. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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-
9. A device for detecting the disconnection of an electronic module (1) from a vehicle on which said module is mounted, comprising:
-
an inductance (17;
31;
41) inseparably associated with the module (1),an element (18;
38;
43) made of ferromagnetic material and connectable to an element of the vehicle,means for connecting the inductance (17;
31;
41) and the module (1) to the vehicle, in an immediate vicinity of the element made of ferromagnetic material (18;
38;
43),and means (14;
36;
42) for monitoring one of i) a magnetic parameter of the inductance, ii) a current passing through the inductance, and iii) a voltage at terminals of the inductance (17;
31;
41) so as to detect a variation of the monitored one of the magnetic parameter, the current, and the voltage, and to order emission of a signal indicating the separation of the module (1) from the element of the vehicle, on detecting the variation of the monitored one of the magnetic parameter, the current, and the voltage greater than a predetermined variation threshold, andmeans of electrically powering the inductance (17;
31;
41), comprising a current source (15;
32;
44) connected in such a way as to power said inductance. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of detecting separation of an electronic module (1) from a vehicle on which the module is mounted, comprising the steps of:
-
associating with the module (1) an inductance (17;
31;
41) inseparable from said module, the inductance (17;
31;
41) and the module (1) connected to the vehicle in an immediate vicinity of an element (18;
38;
43) made of ferromagnetic material and connected to the vehicle,monitoring one of i) a magnetic parameter of the inductance, ii) a current passing through the inductance, and iii) a voltage at terminals of the inductance (17;
31;
41) so as to detect any variation of the monitored one of the magnetic parameter, the current, and the voltage,detecting a variation of the monitored one of the magnetic parameter, the current, and the voltage, determining the detected variation is greater than a predetermined variation threshold being representative of a relative distance between the inductance (17;
31;
41) and the element made of ferromagnetic material (18;
38;
43) and thereupon ordering an emission of a signal indicating separation of the module (1) from the element of the vehicle,wherein, in the monitoring step the monitoring is done by one of i) continuous measurement, ii) periodic measurement, and iii) being triggered by the detected variation, and wherein the inductance comprises a solenoid (17;
31), and an element made of ferromagnetic material comprising a core (18;
38) connectable to an element of the vehicle, in such a way as to penetrate inside the solenoid (17;
31).
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Specification