US 11,982,754 B2
Traffic radar system with patrol vehicle speed detection
Maurice Shelton, Buffalo, KS (US); and Roger Adwell, Chanute, KS (US)
Assigned to Kustom Signals, Inc., Lenexa, KS (US)
Filed by Kustom Signals, Inc., Lenexa, KS (US)
Filed on Jun. 2, 2023, as Appl. No. 18/328,254.
Application 18/328,254 is a continuation of application No. 17/845,115, filed on Jun. 21, 2022, granted, now 11,703,602.
Application 17/845,115 is a continuation of application No. 17/196,313, filed on Mar. 9, 2021, granted, now 11,579,314, issued on Feb. 14, 2023.
Application 17/196,313 is a continuation in part of application No. 16/137,860, filed on Sep. 21, 2018, granted, now 11,194,039, issued on Dec. 7, 2021.
Claims priority of provisional application 62/570,446, filed on Oct. 10, 2017.
Claims priority of provisional application 62/569,667, filed on Oct. 9, 2017.
Claims priority of provisional application 62/569,923, filed on Oct. 9, 2017.
Prior Publication US 2023/0305172 A1, Sep. 28, 2023
Int. Cl. G01S 19/52 (2010.01); G01S 13/931 (2020.01); G01S 19/47 (2010.01)
CPC G01S 19/52 (2013.01) [G01S 19/47 (2013.01); G01S 13/931 (2013.01); G01S 2013/93271 (2020.01); G01S 2013/93272 (2020.01)] 8 Claims
OG exemplary drawing
 
1. A speed sensor for determining and outputting a speed of an associated patrol vehicle, the speed sensor comprising:
a global navigation satellite system (GNSS) module configured to receive GNSS wireless signals, process the GNSS wireless signals, and output a sequence of data packets, each data packet including the speed of the associated patrol vehicle;
a processing element configured to
receive the data packets,
extract the speed of the associated patrol vehicle from each data packet,
extract a directional heading of the associated patrol vehicle from each data packet,
determine the speed of the associated patrol vehicle is zero when a value of the directional heading is variable and data indicating the speed of the associated patrol vehicle is approximately zero for a plurality of consecutive data packets, and
determine the speed of the associated patrol vehicle is non-zero when a value of the directional heading is constant and data indicating the speed of the associated patrol vehicle is non-zero for a plurality of consecutive data packets; and
a port configured either
to output the speed of the associated patrol vehicle as a sequence of digital data values through an electrically conductive connector or wirelessly using a wireless communication protocol, or
to output the speed of the associated patrol vehicle as a varying frequency of a square wave electric voltage signal.