DK202100049Y3 - WIRELESS TRAILER IDENTIFICATION SYSTEM - Google Patents

Abstract

A wireless taillight system, e.g. a lighting card for a trailer, is operated by means of radio communication, where command signals are transmitted at double frequencies to provide extra security by means of redundancy.

Description

DK 202100049 Y3 1

WIRELESS TRAILER IDENTIFICATION SYSTEM

FIELD OF THE INVENTION The present invention relates to improvements in or relating to lighting paths for trailers, towed vehicles or load carriers, such as bicycle holders, mounted on the rear of a vehicle, where the signals between the vehicle and the illumination board are transmitted by radio waves.

BACKGROUND OF THE PRODUCTION It is a requirement that a lighting grain be fitted when the rear lighting units of the vehicle are blocked, for example when towing a trailer or other vehicle, or when it is blocked by a load fitted behind the reach of the vehicle.

Known lighting boards include multifunctional lighting units on each side of the card, typically with an additional number plate in between.

The lighting card is mounted visibly to the driver of a subsequent car, and a wired or wireless connection is provided between the lighting card and the vehicle, so that the operation of the lighting unit's lighting units is synchronized with the operation of the vehicles' rear axles to indicate a warning. turning or braking to the front of a subsequent car.

Wireless debit card systems are operated by a radio transmission from a receiver that is electrically connected to the electrical trailer plug system at the rear of the vehicle. Examples are described in GB2375901 and US6100801 for trailers and in US3666103 for towed cars. Although the wireless communication between the vehicle transmitter and the receiver in the lighting card is a practical and useful approach that avoids cables between the vehicle and the driver, it involves a nistko that the radio frequency is disturbed and that the IV card works properly, no longer guaranteed.

DK 202100049 Y3 2 It would be desirable to be able to offer a wireless taillight indication system with a more secure function.

DESCRIPTION OF THE PRODUCTION It is therefore the purpose of the creation to provide an improvement within the blanket. It is in particular an object to provide a more reliable function of a wireless rear loom system, in particular for a trailer, a towed car or a load carrier at the rear of the vehicle.

This object is achieved with a wireless backlight system, e.g. a lighting card, and its mode of operation by radio communication, where command signals are transmitted at two different radio frequencies to provide additional security by means of redundancy. The system is explained in more detail in the following.

The wireless rear light system comprises - a radio transmitter unit configured for electrical connection to the vehicle's electrical system, the radio transmitter unit configured to receive wired electrical power signals from the vehicle through the electrical connection, each of the effela signals relating to either rear light, stop light or turn signal; wherein the radio transmitter unit is configured to provide and transmit various spurious wireless command signals relating to either taillights, stop lights or turn signals depending on the wired electrical power signals received from the vehicle's electrical system; a light indicator system which is separate from the radio transmitter and which consists of lamps for rear lights, stop lights and turn signals and configured for detachable mounting on a trailer or towed car, e.g. a lighting board with a set of such lamps at each end of the lighting board, typically this lighting system is mounted on a trailer, a towed car or a load-bearing structure on the rear of a vehicle; a radio receiver unit comprising a radio receiver configured to receive the command signals and a control unit electronically connected to the radio receiver and configured to selectively connect electrical power to the lamps of the light indicator system depending on the received command signals;

DK 202100049 Y3 3 - a power source, for example a rechargeable battery or a hydrogen cell system that is rechargeable with bins, ul supply of electric current to the radio receiver, the control unit and the lamps. dear, the radio transmitter unit is configured to transmit and the radio receiver to receive the specific wireless command signals at two different radio frequencies for each wired electrical power signal received from the vehicle through the multi pin connector. The term frequency of the command signal refers to the carrier frequency of the command signals. The specific signal itself would result in a modulation of carrier frequencies.

For example, the dual frequency system is made with a transceiver and antenna for each frequency. It has been found to be useful to obtain greater assurance of proper operation and less risk of interference when using dual command signals transmitted in parallel from the radio transmitter at different frequencies. For example, the double signals ul activation of the lamps are transmitted by the transmitter at a first frequency, for example in the range 800,900 MHz, possibly at 869.70 MHz, and also at a second frequency, for example in the range of 400-500 MHz, possibly at 434 .05 MHz. If the lower of the two frequencies is far from the higher frequency, for example more than 10% different from the higher frequency, such as at least 20, 30, 40 or 50% different from the higher frequency, the risk of interference with both radio signals are simultaneously reduced compared to a signal at a single frequency. Consequently, the system provides redundancy with increased security in a simple way and ensures reliable communication.

For example, the two command signals with different radio frequencies are sent sim simultaneously or approximately simultaneously, for example with less than 9.1 seconds between the two signals. The two signals must be transmitted before the next wired current signal is received by the transmitter unit from the vehicle through the multi-pin connector.

DK 202100049 Y3 4 The signals are advantageously digital. An optional data rate for the radio signals is in the range 10-100 kb / sel, for example 40 kb / sec.

Although the prior art, for example 82375901, describes different frequencies, such as frequency hopping, for the signals, there is no description of transmitting dual signals at two different radio frequencies for each electrical power signal received from the vehicle through the multi-pin connector. one frequency is used for one electrical power signal at a time, and another frequency is used for another electrical power signal in the event of a second occurrence. | in contrast, each electrical signal according to the generation causes two radio signals to be transmitted, the double signals having different frequencies.

In possible embodiments, the radio signals have a digital sequence of a destination address and a source address as well as a command sequence. When paired, the destination address and source address in the radio signals prevent reading of the radio signals from an unaddressed receiver and prevent the receiver 1 from reading signals from a transmitter in a nearby vehicle. Received data packets 1 The radio signals with non-matching addresses are ignored and no commands are executed by the controller. Only the specifically addressed receiver will evaluate the signal and cause illumination in accordance with the user's intention in the vehicle and synchronous with the vehicle's rear lighting system., The digital sequence also contains information about the system and the software version of the system. The control units are typically equipped with commutators to control the lamps and determine control of the current of the power source. Optionally for greater security, the digital signals are encrypted.

For example, the row housing transmitter unit comprises a multi-pin connector for electrical connection to a corresponding trailer standard multi-pin socket on a vehicle. In this embodiment, the raw transmitter unit is configured to receive Kahel-connected electrical power signals from the vehicle through the multi-pin connector, each of the power signals relating to either

DK 202100049 Y3 rear light, stop light or turn signal.

Furthermore, the radio transmitter unit is configured to provide and transmit various specific wireless command signals relating to either backlight, stop light or turn signal light depending on the wired electrical power signals received through the connector.

In some embodiments, where the radio transmitter unit comprises a multi-pin socket and is connected to a corresponding tratler standard multi-pin socket on a vehicle, a feedback signal is required in the vehicle for proper operation of the power consumption of the rattle vapors by the lamps.

Eg. a properly functioning turn signal is indicated when a specific power consumption is measured.

In other cases, lack of power consumption triggers an alarm for a seemingly defective lamp.

In this case, the radio transmitter unit has an equivalent power consumption circuit integrated, including resistors that mimic the consumption of a standard lamp on a trailer.

Such a consumption circuit, including selected resistors, is also useful if the vehicle is equipped with an electrical system that includes a CAN bus system (CAN = Controller Area Network). In some practical embodiments, the transmitter unit receives an electrical current signal from the vehicle through the multi-plug and creates and sends command signals at two different radio frequencies to the radio receiver to cause operation of a corresponding lamp 1 light indicator system.

Optionally, electrical power is connected to the corresponding lamp of the radio receiver system as a consequence of receiving at least one of the two command signals.

Since only one of the two command signals is required for the operation, a disturbance or loss of the signals at a frequency is acceptable.

Special embodiments comprise the system - a second radio transmitter unit comprising a second radio transmitter and a second control unit, the second control unit being operatively connected to the power source and configured to periodically monitor the state of charge of the power source and to periodically create equivalents.

indicative charge state signals, wherein the second radio transmitter is electronically connected to the second control unit and designed to transmit periodic power status signals, for example the voltage, indicative of the current status of the power source, for example the battery; a status indicator unit comprising a second radio receiver configured to receive wireless power status signals, the status indicator unit comprising an indicator for visual and / or audio signals indicating the current drop of the power call to a user based on the received power status signals. In practice, the status indicator unit configured for placement inside a vehicle and for driving and indicating the current status of the power source during operation of the light indicator system on the trailer. Typically, the status indicator is powered by a battery that may be recharged via a power cord, such as a USB charging socket.

Optionally, the status indicator has a number of LEDs (LEDs) that indicate the power status by color and / or number of LEDs.

Optionally, the current status signals are sent at both frequencies. Alternatively, ef. the effect status signals on only one frequency, such as one of the radio frequencies used for radio signals from the transmitter on the vehicle.

In one embodiment, the status indicator indicates whether command signals at one of the frequencies are not working properly for communication. For this, it receives a corresponding alarm signal from the other transmitter unit.

Typically, the second radio transmitter unit and the radio receiver are combined into a transceiver and a part of a single unit that includes not only the controller but also the second controller. Optionally, the control unit and the other controller are optionally combined into a multicontroller that controls not only the electrical current to the lamps, but also the current status of the power source, such as the voltage of the rechargeable battery.

A rechargeable battery with a power capacity of more than 5000 mAh, for example 8000 mAh, has been found to be useful for such light indicator systems if lvs heads are used.

Optionally, the other radio transmitter transmits fail-safe radio signals pertodically to the status indicator unit, for example once after each time period in the range from I to 10 seconds, possibly in the range from I ul 4 seconds. This gives the system an additional degree of safety control. For example, the fail-safe radio signals are transmitted only in response to receiving a command signal from the vehicle radio transmitter unit.

In further embodiments, the state indicator unit is configured to create a sound. and / or visual alarm signal when power status signals or other type of radio signals, such as fail-safe radio signals, are missing from the other radio transmitter unit within a predetermined time interval. This is an indication that the radio connection is lost to the other radio transmitter unit. For example, the status indicator gives a flashing light signal and potentially a characteristic afarmione at the same time to create inattention.

In practice, the generation by means of the status indicator comprises checking whether current status signals or other type of radio signals, such as fail-safe radio signals, are received from the other radio transmitter within a predetermined transmission time, and if no such signals are received, generate an alarm, typically a visual and / or buzzer signal, as an indication that the radic connection to the other radio transmitting unit is lost.

Such a time period is typically shorter than one minute and longer than one second. For example, the light indicator system and the radio receiver unit are provided as an integrated unit, such as in a lighting card. Optionally, the power source is also integrated therein, typically in the form of a rechargeable battery.

Optionally, the light indicator system includes, e.g. the lighting card, a magnet and can be mounted on the trailer or on a towed car using magnetic fastening.

GB 202100049 Y3 8 To save power consumption of the radio system and lamps when the trailer is not in use, the system potentially excludes a motion sensor that activates the system and keeps it activated when motion is detected and / or when electrical signals are received. Optionally, the radio system is configured to go into sleep mode if no electrically wired signal is received from the electrical system for a period of time and no movement is detected within a predetermined period of time,

BRIEF DESCRIPTION OF THE DRAWINGS The creation will be explained in more detail with reference to the drawing, in which fig. I is an overview sketch of the system of a vehicle with a trailer, fig. Fig. 2 shows a radio transmitter unit, Fig. 3 shows an embodiment of a lighting card; fig. 4 shows an alternative lighting system with two separate lamp luminaires. DETAILED DESCRIPTION / PREFERRED EMBODIMENT FIG. I shows a vehicle 1, such as a truck, to which a trailer 2 is connected. Alternatively, trailer 2 can be replaced with a towed car. The trailer 2 comprises a light indicator system 3 with lamps for rear lights, stop lights and turn signals, for example a billing card with a set of such lamps at each end of the billing card. The light indicator system 3 also includes a rechargeable battery and a radio receiver unit that selectively supplies electrical power to the lights of the light indicator system depending on received command signals. The vehicle I is equipped with a radio transmitter unit 4 which wirelessly transmits command signals in the radio reception unit in the Jys indicator system 3. FIG. 2 shows a radio transmitter unit 6 comprising a pin connector 8 for electrical connection to an equivalent trailer standard multi-pin socket on the vehicle 1. The transmitter unit & receives wired related power streams from the vehicle through the multi-pin connector 8, each of the wired power signals relating either taillight, stopiys or turn signals.

DK 202100049 Y3 9 The radio transmitter unit is configured to convert the wired signals into wireless signals and thus provide and transmit various specific wireless command signals 7a, 7b relating to either rear lights, stop lights or turn signals depending on the current signal item received through the multi-pin socket 8 The specific wireless command signals 7a, 7b are transmitted at two different radio frequencies, typically transmitted simultaneously, for each electrical power signal received from the vehicle I through the multi-pin connector &

Fig. 3 shows the light indicator system 3 in the form of a lighting cone 3 'with a set of such lamps 11, 12, 13 at each end of the lighting board with lamps for rear light 11, stop light 12 and turn signal light 13. A set of lamps I 1, 12, 13 is provided | each end and on opposite sides of a number plate 10. Optionally, the lighting card 3) can be mounted on the trailer 2 or a towed car by means of magnetic fastening.

The lighting board 3) contains a rechargeable battery: 14, which supplies a radio receiver unit 15 for receiving the command signals with both frequencies from the transmitter unit 6. This is configured to connect electrical current from the battery 14 selectively to the lamps 11, 12 of the light indicator system 3, 13 depending on the received command signals.

The illumination board 3 'also contains another radio transmitter unit 16, which is operatively connected to the battery 14 and configured to periodically monitor the state of charge of the battery 14.

The illumination board 37 generates penodically corresponding current socket signals, for example indicative of the boat voltage, which is transmitted periodically as radio signals to a status indicator unit 5 inside the vehicle, see fig. The status indicator 5 comprises another radio receiver configured to receive the power status signals, and the status indicator unit comprises an indicator for visually indicating the power source of a power source to a user on the basis of the received power status signals.

DK 202100049 Y3 10 Optionally, the status indicator unit 5 is configured to create an audio and / or visual alarm signal when no power status signals are received or when fail-safe radio signals are not received from the other radio transmitter unit 16 within a predetermined period of time.

The alarm is an indication that the radio connection is lost in the other radio transmitter unit.

Such fail-safe signals are transmitted periodically from the second transmitter unit Fa to ensure proper communication. For example, the fail-safe radio signals are transmitted only in response to receiving a command signal from the radio transmitter unit 6 at the vehicle 2. Optionally, the second radio transmitter unit 16 and the radio receiver unit 15 are combined to a single complex unit 15 ° Fig. 4 illustrates an alternative lighting system with two separate lamp luminaires instead of a lighting account.

Optionally, each of the separate lamp luminaires is provided with a rear light, stop light and turn signal indicator and with a power source, other radio transmitter unit and radio receiver unit.

To distinguish between right and left indicators, the two lamp luminaires optionally include different radio addresses.

In this case, a malfunction of one of the lamps, e.g. baglveter, easily identified by the system.

Claims (1)

DK 202100049 Y3 USE MODEL REQUIREMENTS A wireless taillight system, the system comprising - a rahosender unit for related connection to the vehicle's electrical system where the radio transmitter bed is configured to receive wired electrical current signals from the vehicle's electrical system, each of the current signals relating to either rear weight, stopwatch or turn signal; wherein the radio transmitter unit is configured to provide and transmit various specific wireless command signals relating to either a taillight, stop light or turn signal depending on the wired related power signals received from the vehicle's electrical system; DK 202100049 Y3 11 - a light indicator system which is separate from the radio transmitter and which consists of lamps for rear lights, stop lights and turn signals and configured for detachable mounting on a trailer or a towed car, e.g. a lighting board with a set of such lamps at each end of the lighting board; typically this lighting system is mounted on a trailer, towed or load-bearing structure at the rear of a vehicle; a radio receiver unit comprising a radio receiver configured to receive the command signals and a control unit electronically connected to the radio receiver and configured to selectively connect electrical current to the lamps of the lvs indicator system depending on the received command signals; a power source, for example a rechargeable battery) or a rechargeable hydrogen cell system, for supplying electric current to the radio receiver, the control unit and the lamps; characterized in that the radio transmitter unit is configured to transmit and the radio receiver to receive the specific command signals at two different radio frequencies for each electrical current signal received from the vehicle's electrical system for redundancy and reduced risk of missing signal due to radio signal interference. - ser. A system according to claim 1, wherein the radio transmitter bed comprises a multi-pin connector for electrical connection to a corresponding trolley standard multi-pin socket on a vehicle; wherein the radio transmitter bed is configured to receive wired electrical power beams from the vehicle through the multi-pin connector; wherein the radio transmitter unit is configured to provide and transmit the various specific wireless command signals depending on the wired electrical power signals received from the vehicle through the connector; typically where the radio transmitter unit is supplied from the car through the socket. A system according to claim 1 or 2, which system comprises - a second radio transmitter unit comprising a second transmitter and a second control unit, the second control unit being operatively connected to the power source and configured to DK 202100049 Y3 12 penodically to monitor the state of charge of the power source and ul periodically to create indicative signals of the corresponding state of charge, where the second radio transmitter is electronically connected to the second control unit and configured for transmission of periodic power. status signals indicative of the power stains of the power source, such as the battery voltage; a status indicator unit comprising a second radio receiver configured to receive the current status signals, the status indicator unit comprising an indicator for visually indicating the current status of the power source to a user on the basis of the received current status signals. The system of claim 3, wherein the status indicator unit is configured to generate a vd and / or visual alarm signal when no power status signals or other type of radio signals, such as fail-safe radio signals, are received from the other radio. transmitter unit, within a predetermined period of time as an indication that the radio obstruction is lost to the other radio transmitter unit. A system according to claim 3 or 4, wherein the status indicator unit is configured to be arranged inside the vehicle visible to the driver and configured to indicate the current status of the current time during operation of the light indicator system. A system according to any one of claims 1-5, wherein the system comprises an illumination board, wherein the light indicator system, the radio receiver unit and the power source in the form of a rechargeable battery or integrated. A system according to any one of claims 1-6, wherein the lower of the two different radio frequencies differs by more than 10% relative to all the higher frequency. The system of claim 7, wherein the two different frequencies are within bone ballwise 800,900 MHz and 400-500 MHz. DK 202100049 Y3 13 A system according to any one of claims 1-8, wherein the system comprises a motion sensor for measuring movement of the vehicle and / or the trailer and is configured to switch to a power saving mode after a predetermined period of time where no movement is detected of the motion sensor and no electrical signal is received from the vehicle's electrical system.