WO2015152722A2 - Dispositif de surveillance d'objets mobiles - Google Patents

Dispositif de surveillance d'objets mobiles Download PDF

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Publication number
WO2015152722A2
WO2015152722A2 PCT/NL2015/050214 NL2015050214W WO2015152722A2 WO 2015152722 A2 WO2015152722 A2 WO 2015152722A2 NL 2015050214 W NL2015050214 W NL 2015050214W WO 2015152722 A2 WO2015152722 A2 WO 2015152722A2
Authority
WO
WIPO (PCT)
Prior art keywords
signal
monitoring device
monitoring
transmit
receive
Prior art date
Application number
PCT/NL2015/050214
Other languages
English (en)
Other versions
WO2015152722A3 (fr
Inventor
John Van Driel
Petrus Johannes KOOMEN
Gerardus Johannes Nicolaas Doodeman
Original Assignee
Prazza B.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Prazza B.V. filed Critical Prazza B.V.
Publication of WO2015152722A2 publication Critical patent/WO2015152722A2/fr
Publication of WO2015152722A3 publication Critical patent/WO2015152722A3/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
    • G01S11/10—Systems for determining distance or velocity not using reflection or reradiation using radio waves using Doppler effect
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/82—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted
    • G01S13/825—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein continuous-type signals are transmitted with exchange of information between interrogator and responder
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/16—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived sequentially from receiving antennas or antenna systems having differently-oriented directivity characteristics or from an antenna system having periodically-varied orientation of directivity characteristic
    • G01S3/18—Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived sequentially from receiving antennas or antenna systems having differently-oriented directivity characteristics or from an antenna system having periodically-varied orientation of directivity characteristic derived directly from separate directional antennas
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/46—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • G01S3/48—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems the waves arriving at the antennas being continuous or intermittent and the phase difference of signals derived therefrom being measured
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/005—Antennas or antenna systems providing at least two radiating patterns providing two patterns of opposite direction; back to back antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0251—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity
    • H04W52/0254—Power saving arrangements in terminal devices using monitoring of local events, e.g. events related to user activity detecting a user operation or a tactile contact or a motion of the device
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the invention relates to a monitoring device for measuring the velocity of moving objects, for example, a golf ball in motion after a shot.
  • a known monitoring device for example, a Doppler radar device, makes use of a fixed transmit/receive station which transmits electromagnetic waves with a certain frequency, in which a small part of the transmitted waves are reflected by the golf ball.
  • a Doppler shift occurs in the
  • the speed of the golf ball can be determined.
  • a disadvantage of the known monitoring device is that this is relatively large and is not simple to combine with portable mobile devices such as, for example, smartphones, into a compact mobile device.
  • An aim of the invention is to provide a monitoring device for moving objects that can be of compact construction and is combinable with portable mobile devices, such as smartphones.
  • a monitoring device comprising a transmitter for generating high frequency, FIF, electromagnetic, EM, waves with a first frequency, and a receiver for receiving the EM waves and generating a first FiF signal in which the receiver is provided with a control unit set up to determine a speed between the transmitter and receiver on the basis of the first HF signal.
  • the first frequency of the HF-EM waves may be selected in the range between 800 and 2400 MHz.
  • the monitoring device may, for example, be used on a game of golf to monitor and track the path of a hit golf ball. To do this, a user can hold the monitoring device with the receiver in their hand at a first location, to monitor the golf ball provided with the transmitter. After the golf balls have been hit, during the flight of the golf ball in which the transmitter transmits the FIF -EM waves, on the basis of the received EM waves coming from the transmitter in the moving golf ball and the first HF signal generated by the receiver, the speed of the moving golf ball in relation to the stationary receiver may be measured on the basis of the Doppler shift of the frequency the first HF signal. In this way, the moving golf ball can be monitored.
  • the receiver is provided with an HF oscillator for generating a second HF signal with a second frequency, in which the receiver is furthermore set up to determine a difference between the frequencies of the first HF signal and the second HF signal, and in which the speed between the transmitter and receiver is determined on the basis of the differential frequency.
  • the second frequency of the second HF signal may, for example, be selected at the first frequency. In practice, at speeds of the golf balls in the region of between 0 and 100 km and the mentioned frequency ranges of the first and second HF signal, the associated Doppler shifts will be in the range between 0 and 10 Hz
  • the receiver is provided with two monitoring antennae and two receivers, in which the monitoring antennae are fastened at a fixed distance from each other and are connected to the respective receivers.
  • the fixed distance may be a few mm to a several cm.
  • the monitoring antenna is formed as a section of a circular arc. This achieves a compact construction of the monitoring antenna.
  • the monitoring device comprises a substrate provided with the two monitoring antennae on respective sides of the substrate.
  • the monitoring antennae can be set up in a simple way at a fixed distance, or example, on opposite sides of the substrate.
  • the monitoring device is set up to determine a distance based on the first HF signal. Based on a change of the amplitude of the received first HF signal, the distance covered by the golf ball or in relation to the receiver is determined.
  • the monitoring device is set up to determine a direction of the object in relation to a reference axis of the substrate, on the basis of the received first HF signals of the monitoring antennae.
  • the direction of the moving object or golf ball can be determined.
  • the monitoring antennae respectively comprise a planar antenna.
  • Planar antennae are of compact construction and can be incorporated with the substrate.
  • the transmitter is provided with an antenna with an asymmetric radiation pattern in relation to a reference point and the monitoring device is set up to determine a rotational velocity of the transmitter about the reference point of the transmitter, on the basis of an amplitude modulation of the received first HF signal.
  • the reference point may, for example, be the centre point of a golf ball, the rotational velocity then corresponds to a spin of the golf ball.
  • the monitoring device is provided with a space for the detachable connection of a mobile device.
  • This mobile device may, for example, be a smartphone.
  • the monitoring device may, for example, be designed in the form of a so-called “sleeve", by which the smartphone may be connected to the monitoring device.
  • a further aim of the invention is achieved by the method for monitoring a moving object comprising:
  • a further aim of the invention is achieved by a transmit/receive device in accordance with claim 19, and a monitoring device in accordance with claim 20.
  • a further aim of the invention is achieved by an object in accordance with claim
  • FIG. 1 shows diagrammatically a first embodiment of a monitoring device in accordance with the invention
  • Fig. 2 shows diagrammatically a cross-section of a monitoring antenna for use in a first embodiment of the monitoring device in accordance with the invention
  • Fig. 3 shows a side view of a substrate provided with the monitoring antennae for use in the first embodiment of the monitoring device
  • Fig. 4 shows diagrammatically a first embodiment of a transmission device in a golf ball
  • Fig. 5 shows diagrammatically a second embodiment of a monitoring device
  • Fig. 6 shows radiation diagrams of the monitoring antennae of the monitoring device
  • Fig. 7 shows a strength of HF gauging signals received by the respective monitoring antennae of the monitoring device
  • Fig. 8 shows a diagram in which the difference between the HF gauging signals received by the respective monitoring antennae of the monitoring device as a function of the direction of the golf ball in relation to a reference axis of the monitoring device;
  • Fig. 9 shows an illustration for reproducing the direction of the golf ball given in relation to a reference axis of the monitoring device;
  • Fig. 10 shows a monitoring device provided with a space for accommodating a smartphone.
  • Fig.1 shows a monitoring device 1 in accordance with the invention for determining the velocity of an item or object, for example, a golf ball.
  • the monitoring device comprises a transmitter 2 and an antenna 3 for generating HF EM waves with a first frequency, and a receiver 4 for receiving the HF EM waves and generating a first HF signal 10.
  • the first frequency for example, is in the range between 800 and 2400 MHz.
  • the golf ball is provided with the transmitter 2.
  • the receiver 4 is provided with an HF receiver 5 and an antenna 8 which is electrically connected to the HF receiver 5.
  • the HF receiver generates the first HF signal when receiving the HF-EM waves.
  • the receiver comprises a control unit 7 set up to determine the velocity between the transmitter 2 and the receiver 4 on the basis of the first HF signal 10. 1.
  • the receiver 4 is provided with an HF oscillator 6 for generating a second HF signal 11 with a second frequency.
  • the second frequency may be the same frequency as the first frequency of the EM waves transmitted by the transmitter.
  • the control unit 7 of the receiver 3 is furthermore set up to determine a differential frequency of the frequencies of the first HF signal 10 and the second HF signal 11 and determining the speed between the transmitter and the receiver from the differential frequency.
  • a Doppler shift in the frequency of the received signal 10 is introduced in relation to the first frequency. From the Doppler shift of the received signal, the velocity of the golf ball can be determined in a way known to a person skilled in the art. For example, on the basis of formula (1)
  • f w represents the detected frequency
  • 3 ⁇ 4 the frequency of the source v the velocity of the object in relation to the observer and c the speed of light in a vacuum under the condition that speed v is much less than the speed of light c.
  • the control unit is furthermore set up for reproducing the determined speed of the golf ball n on a screen, for example, an LCD, of a laptop, tablet computer, mobile telephone or smartphone 9.
  • the HF oscillator 6 comprises a voltage controlled oscillator and the control unit 7 is set up to generate a control signal 12 for this voltage controlled oscillator on the basis of the differential frequency between the first and the second HF signal 10, 11, in which the frequency of the second HF signal 11 is frequency-locked with the frequency of the first HF signal 10.
  • Fig. 2 shows a cross-section of a substrate 21 provided with two monitoring antennae for a receiver in a monitoring device in accordance with the invention.
  • the monitoring antennae comprise a planar antenna.
  • the substrate 21 is provided on both sides with the respectively planar antennae 22,23.
  • Fig. 3 shows a side view of the substrate 21 provided with monitoring antenna 23 in accordance with Fig. 2, in which the planar antenna 23 is formed as a section the circular arc.
  • the golf ball comprises a transmit/receive device 40.
  • Fig. 4 shows diagrammatically the transmit/receive device 40 for use in the moving object or the golf ball.
  • the transmit/receive device 40 is provided with a first microcontroller 41, an electronic switch 42, a rectifier diode circuit 43, a near field antenna 44, an OR circuit 45, a battery 46, an acceleration transducer 47, a first transceiver 48, and a far field antenna 49.
  • the far field antenna 49 is a direction- sensitive antenna and has an asymmetric radiation diagram.
  • the rectifier diode circuit 43 is connected to the near field antenna 44 and generates a first auxiliary signal when HF-EM waves are received when their frequency corresponds to the properties of the near field antenna 44.
  • the OR circuit 45 is set up to combine the first auxiliary signal and a second auxiliary signal, and generating an output signal or the electronic switch 42 when one of the first or the second control voltages is received at the inputs of the OR circuit 45.
  • the electronic switch 42 may, for example, comprise an FET, of which a first electrode, a source, is connected to a supply voltage and a second electrode, a drain, is connected to the microcontroller 41 , the motion sensor 47 and the first transceiver 48.
  • a control electrode for example, a gate of the FET, is connected to the OR circuit for receiving the output signal.
  • the supply voltage is supplied by the battery 46.
  • the FET switches the supply voltage to the drain to supply the supply voltage to the motion sensor 47, the microcontroller 41 and the first transceiver 48.
  • the first microcontroller 41 is furthermore set up to generate the second auxiliary signal after receiving the supply voltage.
  • the OR circuit 45 continues to generates the output signal by which the microcontroller 41 and the first transceiver 48 remain connected and the transmit/receive device continues to transmit the first HF-EM waves,
  • the first microcontroller 41 may set the first transceiver 48 to a predetermined HF channel in the range between 800 and 2400 MHz.
  • Fig. 5 shows diagrammatically an embodiment of the monitoring device 50 for monitoring the moving golf ball provided with the transmit/receive device 40.
  • the monitoring device 50 comprises a second transceiver 61, a third transceiver 62, a second microcontroller 51, two so-called Direct Conversion, DC, receivers, two monitoring antennae 54,55, and an interface electrically to connect the monitoring device 50 to a portable mobile device 9, for example, a mobile telephone, smartphone or a tablet computer.
  • the DC receiver is, for example, of the type LTM9004 as supplied by Linear
  • the interface is, for example, of the USB or micro-USB type.
  • the connection may also be made wirelessly, for example, a Bluetooth connection.
  • the mobile device 9 may furthermore be provided with application software to control the monitoring device.
  • the monitoring device may be designed as a so-called "sleeve", space or dock, that is set up to connect the smartphone so that it can be mechanically detached, accommodated or firmly attached, so that the combination easily fits into the hand of the user.
  • a received HF gauging signal that, for example, is transmitted by the transmit/receive device 40 in the golf ball is detected by means of synchronous detection in which, by using a local oscillator, for example, that of the second transceiver 61 , a local HF signal is generated, the frequency of which is equal to or virtually equal to the frequency of the set carrier wave of the transmitted HF gauging signal of the transmit/receive device 40.
  • the first DC receiver comprises a first multiplier 63, a low-pass filter 65 and an analogue-digital converter 67.
  • the second DC receiver is identical to the first DC receiver and comprises the first multiplier 64, a low-pass filter 66 and an analogue-digital converter 68.
  • the respective multipliers 63, 64 are set up to multiply the local HF signals and the respectively received first and second HF gauging signal.
  • the resulting signals are respectively forwarded to the first low-pass filters 65, 66.
  • the low-pass filters 65, 66 are set up to pass through the respective low-frequency components of the resulting signals of the multipliers 63, 64.
  • the analogue-digital converters 67, 68 are set up for converting the low-frequency signals obtained into digital signals. The digital signals can be passed through to the portable mobile device 9.
  • first and second monitoring antennae 54, 55 may be implemented next to each other, a few centimetres apart, for example, left and right on the substrate or printed circuit board and the first input of the first multiplier 63 of the first DC receiver is connected to the first monitoring antenna 54 via a first low-noise amplifier 57 and a first input of the second multiplier 64 of the second DC receiver is connected to the second monitoring antenna 55 by a second low-noise amplifier 56.
  • the second inputs of the multipliers 63, 64 are connected to the second transceiver 61 to receive the local HF signal.
  • the mobile device can determine the speed and direction of the moving golf ball in relation to the monitoring device 50 from the digital signals of the DC receivers, from respectively a Doppler shift of the received HF gauging signal and a frequency difference between the two digital signals.
  • the first frequency of the carrier wave of the HF gauging signal and the second frequency of the local HF signal are set so that the differential frequency of the HF gauging signal and the local HF signal is in the audible range, for example, between 50 Hz and 16 kHz.
  • the first frequency of the HF gauging signal which is used in the transmit/receive circuit in the golf ball can be selected in the range between 800 and 2400 MHz.
  • a number of states are defined in which the transmit/receive circuit 40 in the golf ball and the monitoring device 50 can operate.
  • the transmit/receive device 40 in the golf ball can operate in the following states:
  • the monitoring device 50 may operate in the following states:
  • G distributing an identification number and a channel number
  • the monitoring device 50 is set up to activate the third transceiver 62 for generating and transmitting a first information signal with a predetermined frequency via the amplifier 53 and the second antenna 55, this frequency may, for example, be selected in the range between 800 and 2400 MHz. Subsequently, the monitoring device 50 connects the selected third transceiver 62 after receiving the first control signal for receiving the golf ball. If, after a predetermined time, for example, five seconds, no first control signal is received by the third transceiver 62, the steps of respectively generating the information signal and connecting after receiving the third transceiver are repeated. In this state, the monitoring device 50 transmits the first information signal with the predetermined frequency. After receiving this first information signal with the predetermined frequency from the transmit/receive device 40 as described above, the golf ball goes into the "wait for start" state.
  • the monitoring device 50 then goes into the "distributing an identification number and a channel number" state.
  • the second microcontroller 51 in the monitoring device 50 is set up to transmit the first information signal containing the identification number and the channel number.
  • the identification number and the channel number are selected depending on the number of golf balls and the channels used by the respective transmit/receive device in the golf balls.
  • the number of channel numbers may, for example, be 32.
  • the number of golf balls that may be provided with an identification may, for example, be 256.
  • the first microcontroller 41 in the golf ball is furthermore set up to determine the identification number and the channel number from the first information signal after receiving it.
  • the first microcontroller 41 disconnects the transmit/receive circuit 40 in the golf ball.
  • the transmit/receive device 40 When the first microcontroller 41 receives the first information signal, the transmit/receive device 40 goes into the "wait for start” state. In this state, the transmit/receive device 40 is furthermore set up periodically to receive the first information signal. In order then to hit-off a golf ball, the user can prepare the golf ball for the hit- off To do this, it sends a command "ball ready for hit-off to the monitoring device 50 via the mobile device. The monitoring device 50 is connected after the "ball ready for hit-off state. In this state, the second microcontroller 51 is set up to transmit the command "ball ready for hit-off with the first information signal. The monitoring device 50 may be connected in the "Doppler" state.
  • the transmit/receive circuit 40 in the golf ball then receives this first information signal.
  • the first microcontroller 41 in the transmit/receive device determines from the received first information signal the "ball ready for hit-off command and sets the transmit/receive circuit of the golf ball in this state.
  • the first microcontroller 41 is furthermore set up by the first transceiver 48 during a first time interval, for example, 10 or 20 seconds to transmit the HF gauging signal, the carrier wave of which has a frequency corresponding to the received channel number by the far field antenna 49.
  • the transmit/receive device 50 in the golf ball remains in the "prepare for hit-off state.
  • the identification number is modulated.
  • the acceleration transducer 47 in the golf ball When the golf ball is hit, the acceleration transducer 47 in the golf ball generates a motion signal.
  • the first microcontroller 41 detects this motion signal and switches the transmit/receive circuit 40 to the "follow ball" state. In this state, the first microcontroller 41 is set up to allow the transceiver 48 to transmit the HF gauging signal, as long as the acceleration transducer 47 generates the motion signal.
  • the frequency of the HF engaging signal shows a Doppler shift.
  • the HF gauging signal received shows an amplitude modulation corresponding to the rotational frequency of the golf ball. Receiving and detecting the HF gauging signal by the monitoring device 50 is described above.
  • the first microcontroller 41 in the golf ball is furthermore set up to switch the transmit/receive device 40 in the golf ball to the "find" state at the end of the flight of the golf ball when the golf ball is situated on the ground and the acceleration transducer 47 no longer generates any motion signal for a certain period.
  • the first controller 41 is set up to transmit an HF find signal through the first transceiver 48 and the first far field antenna 49, with intervals from one to several seconds.
  • the HF find signal comprises the identification number of the golf ball.
  • the frequency of this HF find signal is also selected in the range between 800 and 2400 MHz and may be selected equal to the first frequency.
  • the first microcontroller 41 is then set up to switch the transmit/receive device 50 into a receive state after each transmission of the HF find signal, to receive a response signal from the monitoring device 50.
  • the first microcontroller 41 determines that the acceleration transducer 47 no longer generates any signal. The microcontroller 41, then switches to pulse state.
  • the second microcontroller 51 switches the monitoring device 50 to the "pulse state".
  • the monitoring device 50 is furthermore set up to receive the HF find signal and when the HF find signal is received, to transmit a response signal.
  • the monitoring device 50 may generate an audio signal to inform the user in a way known by a person skilled in the art.
  • an interval time can be reported by which the first microcontroller 41 in the transmit/receive device in the golf ball must repeat the HF find signal.
  • the monitoring device 50 may set the interval time, depending on the strength of the received HF find signal, in which the interval time is shorter, as the strength of the HF find signal increases. This reduces the chance that the golf ball is passed by the user when searching.
  • the interval time may be in a range between, for example, 0.3 and 3 s.
  • the monitoring device 50 is furthermore set up, when the golf ball is found, to receive a following input from the user, for example, the command "ball ready for hit- off.
  • the transmit/receive device 40 in the golf ball no longer receives a command for a set period of time, this is switched off This time period is 20 s, for example.
  • the monitoring device 50 may furthermore be set up to determine from the HF gauging signals it receives through the respective first and second antenna 54, 55, the following parameters of the flight of the golf ball:
  • the monitoring antennae 54, 55 of both transceivers 61,62 in the monitoring device 50 exhibit respective radiation diagrams, the respective main axes of which overlap each other in a minimal way.
  • Figure 6 shows two radiation diagrams 71 , 72 of the monitoring antennae.
  • the first radiation diagram 71 of the first monitoring antenna for example, the left antenna
  • the second radiation diagram 72 of the second monitoring antenna for example, the right antenna.
  • the direction from which a received HF signal is transmitted may then be determined from the difference in strength between the received signals of respectively the first and second antenna.
  • the reference axis of the monitoring device divides the angle between the main axes of the radiation diagram 71, 72 into two equal angles.
  • Fig. 7 shows a diagram 75 with a first graph 76 which illustrates the strength of the respective HF signals received by respectively the first antenna 54 and the second antenna 55, as a function of the angle between the transmit/receive device 40 in the golf ball and the respective main axis of the antennae 54, 55.
  • Fig. 8 shows a diagram 80 with a graph 81, which illustrates the difference between amplitudes of the received HF gauging signals received by the antennae 54, 55, as a function of the angle between the direction of the golf ball and the reference axis of the monitoring device 50.
  • the determined direction of the golf ball may be shown on a display screen of, for example, the mobile device to the user.
  • Fig. 9 gives an example of an illustration to be shown.
  • the illustration 10 gives a compass card 91 and an arrow 92, which indicates the direction of the golf ball in relation to the reference axis of the monitoring device.
  • the direction will be given as left or right. Then the user must move in the indicated direction by which the golf ball comes within the range of the direction indication.
  • the mobile telephone may be provided with a magnetic sensor for implementing a compass function and generating a compass signal.
  • the monitoring device may furthermore be set up to connect the direction indication to the compass function of the mobile telephone.
  • Fig. 10 shows a composition 100 of a monitoring device 1 provided with a space or dock 101 for accommodating a portable device for the smart phone 9 or part thereof.
  • the monitoring device can be used to monitor a hit off and moving golf ball and searching for a golf ball that has been hit off and is stationary at a distance by, among other things:
  • the two monitoring antennae have an identical radiation pattern only reflected in relation to the centre between the antennae.
  • the monitoring antennae have an asymmetrical radiation pattern so that two situations can be differentiated:
  • the object to be determined is situated to the right for both antennae.
  • Both monitoring antennae provide a large receive signal and the distance can be determined on the basis of the amplitude of the received signal.
  • the object to be determined is situated to the side in relation to the measuring device.
  • a monitoring antenna will provide a maximum signal which remains the same regardless of the direction in which it is received.
  • the other monitoring antenna provides a signal that is dependent on the direction in which it is received.
  • the difference between the phases of the signals determines the angle from where the signal comes.
  • the magnitude of the signal determines the distance from which the signal is transmitted.
  • the radiation pattern of the antenna has a three-dimensional shape.
  • the rotation of the object is determined on the basis of the amplitude modulation arising from rotation as a curve over time.
  • the orientation of the rotation can be determined from the change of the 3D acceleration recording within the moving object. On the basis of these two measurements, the rotation of the moving object can be determined completely.
  • the invention can be summarised as a monitoring device for measuring the speed of moving objects comprising a transmitter for generating high frequency, HF, electromagnetic, EM, waves with a first frequency, and a receiver for receiving the EM waves and generating a first HF signal.
  • the receiver is provided with a control unit set up to determine the speed between the transmitter and the receiver on the basis of the first HF signal.
  • the transmitter may, for example, be located in a golf ball.
  • the monitoring device is furthermore set up for illustrating the speed on a display screen, for example, of a smartphone.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

L'invention concerne un dispositif de surveillance pour mesurer la vitesse d'objets mobiles. Le dispositif comprend un émetteur (2; 40) pour générer des ondes électromagnétiques (EM) haute fréquence (HF) avec une première fréquence, et un récepteur (5 : 50) pour recevoir les ondes EM et générer un premier signal HF. Le récepteur est équipé d'une unité de commande (51) configurée pour déterminer une vitesse entre l'émetteur et le récepteur d'après le premier signal HF. L'émetteur peut, par exemple, être placé dans une balle de golf. Le dispositif de surveillance est également configuré pour illustrer la vitesse sur l'écran d'affichage d'un téléphone intelligent, par exemple.
PCT/NL2015/050214 2014-04-03 2015-04-02 Dispositif de surveillance d'objets mobiles WO2015152722A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP14163438.6 2014-04-03
EP14163438 2014-04-03
EP15151990 2015-01-21
EP15151990.7 2015-01-21

Publications (2)

Publication Number Publication Date
WO2015152722A2 true WO2015152722A2 (fr) 2015-10-08
WO2015152722A3 WO2015152722A3 (fr) 2015-12-17

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WO (1) WO2015152722A2 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6148271A (en) * 1998-01-14 2000-11-14 Silicon Pie, Inc. Speed, spin rate, and curve measuring device
US6244971B1 (en) * 1999-01-28 2001-06-12 The Distancecaddy Company, Llc Spin determination for a rotating object
GB2376585B (en) * 2001-06-12 2005-03-23 Roke Manor Research System for determining the position and/or speed of a moving object
US7109920B2 (en) * 2003-07-16 2006-09-19 General Electric Company Moving platform position determination system and method
WO2006119563A1 (fr) * 2005-05-12 2006-11-16 Loc8Er Pty Ltd Procede et appareil de localisation d'objets procede et appareil de localisation d'objets
KR100958239B1 (ko) * 2008-03-10 2010-05-17 엘에스산전 주식회사 Ｒｆｉｄ 태그
US8257189B2 (en) * 2008-04-03 2012-09-04 Geogolf, Llc Advanced golf monitoring system, method and components
US8253559B2 (en) * 2010-02-26 2012-08-28 Thl Holding Company, Llc System and wireless device for locating a remote object

Also Published As

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