Tire condition monitoring device
First Claim
Patent Images
1. A tire condition monitoring device comprising:
- a transmitter installed in a tire, configured to transmit a notification signal for notifying of a condition of the tire;
a receiver installed in a vehicle body configured to receive the notification signal from the transmitter;
a tire-side control unit configured to cause the transmitter to intermittently and periodically transmit the notification signal, the notification signal including a predetermined start signal indicating a start of a transmission of the notification signal; and
a vehicle-side control unit configured to control the receiver to intermittently and periodically execute a reception process for receiving the notification signal with a predetermined cycle,wherein the tire-side control unit controls a transmission interval for the transmission of the notification signal such that a first interval between a first reference time which is a period of the predetermined cycle after a transmission of the start signal started and an end time at which the transmission of the start signal ends first time after the first reference time is shorter than an execution time period for executing the reception process, and that the first interval between the first reference time and the end time is longer by a first shift time than a transmission time period for transmitting the start signal.
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Accused Products
Abstract
Each time a time corresponding to one period of an intermittent reception process in a vehicle-side device elapses, a transmission interval of a notification signal is controlled so that a transmission time of a preamble of the notification signal is shifted in a direction in which the transmission time is relatively delayed from an execution time of the reception process. Further, when the transmission time of the preamble passes through a range of the execution time of the reception process during this relative shift, the transmission interval of the notification signal is controlled so that the entire transmission time of the preamble is included in the range of the execution time of the reception process.
8 Citations
10 Claims
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1. A tire condition monitoring device comprising:
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a transmitter installed in a tire, configured to transmit a notification signal for notifying of a condition of the tire; a receiver installed in a vehicle body configured to receive the notification signal from the transmitter; a tire-side control unit configured to cause the transmitter to intermittently and periodically transmit the notification signal, the notification signal including a predetermined start signal indicating a start of a transmission of the notification signal; and a vehicle-side control unit configured to control the receiver to intermittently and periodically execute a reception process for receiving the notification signal with a predetermined cycle, wherein the tire-side control unit controls a transmission interval for the transmission of the notification signal such that a first interval between a first reference time which is a period of the predetermined cycle after a transmission of the start signal started and an end time at which the transmission of the start signal ends first time after the first reference time is shorter than an execution time period for executing the reception process, and that the first interval between the first reference time and the end time is longer by a first shift time than a transmission time period for transmitting the start signal. - View Dependent Claims (2, 3, 7, 9)
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4. A tire condition monitoring device comprising:
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a transmitter installed in a tire, configured to transmit a notification signal for notifying of a condition of the tire; a receiver installed in a vehicle body configured to receive the notification signal from the transmitter; a tire-side control unit configured to cause the transmitter to intermittently and periodically transmit the notification signal, the notification signal including a predetermined start signal indicating a start of a transmission of the notification signal; and a vehicle-side control unit configured to control the receiver to intermittently and periodically execute a reception process for receiving the notification signal with a predetermined cycle, wherein the tire-side control unit controls a transmission interval for the transmission of the notification signal such that a second interval between a second reference time which is a period of the predetermined cycle after a transmission of the start signal ends and a start time at which the transmission of the start signal last started before the second reference time is shorter than an execution time period for executing the reception process, and the second interval between the second reference time and the start time is longer by a second shift time than a transmission time period for transmitting the start signal. - View Dependent Claims (5, 6, 8, 10)
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Specification
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Current AssigneeAlps Alpine Co., Ltd.
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Original AssigneeALPS Electric Company Limited (Alps Alpine Co., Ltd.)
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InventorsTakahata, Shinya, Ushida, Satoshi
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Primary Examiner(s)Marc, McDieunel
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Assistant Examiner(s)Stroud, James E
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Application NumberUS15/091,425Publication NumberTime in Patent Office203 DaysField of Search701/29.1US Class Current1/1CPC Class CodesB60C 23/0435 Vehicle body mounted circui...B60C 23/0455 Transmission control of wir...B60C 23/0462 Structure of transmission p...
