The present invention refers generically to an anti-theft system for a motorized two-wheeled vehicle, such as a Segway or, more preferably, an electric bicycle.

Today's power-assisted electric bicycles are sophisticated andmanaged by electronic control units. They also commonly have display devices to inform the rider with data about the route, the path, the status of the bicycle or with biometric data.

The display devices are almost always mounted on the handlebar, and in removable manner so as to be removed when the bike is parked and unattended.

Unfortunately, electric power-assisted bicycles are expensive, and theft attempts incessant, even for their accessories. To discourage theft, the display devices are also electronic keys, in the sense that the electric motor of the bicycle does not start if its display device is not connected.

However, there is always the risk that the criminal has with him/her another similar display device, inserts it into the bike and steals it anyway. Or he/ she can assault the bicycle with the owner on the saddle, to steal together bicycle and the proprietary electronic key.

The main object of the invention is to improve this state of the art.

Another object of the invention is to provide an accessory device of the aforesaid type, in particular a display device, which renders more secure the vehicle against theft.

These and other objects are achieved by what is defined in the annexed independent claims; other advantageous technical features are defined in the dependent claims.

An anti-theft security method is proposed for a motorized two-wheeled vehicle, e.g. an electric bicycle, wherein the vehicle comprises:

- an electric motor to assist or carry out the propulsion of the vehicle;

- an accessory detachable from the vehicle comprising an electronic circuit to wirelessly receive data, and

- an electronic processor configured to control the motor when the accessory is mounted on the vehicle; wherein

the accessory emits a signal to unconditionally unlock the operation of the electronic processor or the motor only if, through the electronic circuit, it recognizes a wireless signal from an external portable electronic device.

Another aspect of the invention is an anti-theft security system comprising

a motorized two-wheeled vehicle, e.g. an electric bicycle, that comprises an electric motor to assist or carry out the propulsion of the vehicle,

an accessory comprising an electronic circuit for receiving data in wireless manner,

a microprocessor configured to control the motor, and

an external portable electronic device;

wherein the accessory is configured to emit a signal to unlock unconditionally the operation of the motor or of the microprocessor only if through the electronic circuit it recognizes a wireless signal coming from the external portable electronic device.

Another aspect of the invention is an accessory for a motorized two wheeled vehicle, e.g. an electric bicycle,

the vehicle comprising an electric motor to assist or carry out the vehicle propulsion,

the accessory comprising an electronic circuit for receiving data in wireless manner,

wherein the accessory is configured to emit a signal to unlock unconditionally the operation of the motor only if through the electronic circuit it recognizes a wireless signal coming from the external portable electronic device.

Another aspect of the invention is a software program for said accessory, the software program containing instructions that, when loaded and executed in an accessory’s microprocessor, execute one or each activity described here for the accessory, e.g. the respective steps of the method.

Another aspect of the invention is a software program (e.g. an app ) for said external portable electronic device, the software program containing instructions that, when loaded and executed in a microprocessor of the external portable electronic device, perform one or each activity described herein for the external portable electronic device, e.g. the respective steps of the method.

By unconditionally unlock the operation of the electronic processor or of the motor it is meant that the accessory is able to emit a signal without which the means controlling the electric motor, whichever they are, are not allowed to activate the motor.

For each aforementioned aspect of the invention, the following variants apply wherein the accessory is configured for

- sending said signal only when it is mounted on the vehicle; when it is disconnected therefrom it enters a low-power mode or turns off; and / or

- unconditionally unlocking the operation of the motor by sending a signal to a microprocessor configured to control the motor, the microprocessor being on board the accessory or the vehicle, and/or

- unlocking the motor operation only if through the electronic circuit it recognizes a specific signal coming from an external portable electronic device. The specificity of the signal allows e.g. that more than one portable electronic device can enable the motor operation with said wireless signal, as long as the wireless signal is validly encoded or contains a valid code. The valid code can be e.g. inserted or generated in the portable electronic device via an App loaded into the portable electronic device; and/or

- unblocking the motor operation only if through the electronic circuit it recognizes a signal coming from a specific external portable electronic device. In this case only one or a small minority of portable electronic devices are able to enable the motor operation, e.g. because as a code they send their own serial code or have been previously enabled by the accessory via an authentication procedure; and/or

- asking the user to enter a code to unlock the operation of the motor if the accessory does not recognize said signal, and if the entered code is correct, the accessory is configured to unlock the motor.

For each aspect of the invention, the following additional variants apply:

- the accessory device comprises a display for displaying data or information. In particular, the display consists of a touch-screen, to avoid push buttons on the device and to provide a control surface to enter commands or the unlock code. When the accessory is mounted on the vehicle, the display can e.g. be driven by an electronic circuit to display the speed of the vehicle and/or to display the remaining charge of its battery and/or of an external battery, which supplies an electric motor which propels the vehicle on the ground; and/or

- the accessory device comprises a portion shaped for the removable attachment to the vehicle, or the accessory is mounted in permanent manner on the vehicle, and/or

- the electronic circuit for receiving data wirelessly is a receiver, preferably a transceiver, built with Bluetooth or wi-fi or GSM technology; Bluetooth technology is particularly advantageous because through the pairing it simplifies the association and/or the univocal authentication between the portable device and the accessory; and/or

- the external portable electronic device is a mobile phone, a smartphone or a tablet. In the case of the smartphone or tablet, an app for managing the wireless communication with the accessory is loaded thereon, in particular to send said signal and / or carry out the authentication procedure of the external portable electronic device; and/or

- the accessory device comprises an attachment portion (e.g. to the handlebar) of the vehicle; and/or

- the accessory device comprises non-permanent fixing means, such as Veltro®, magnets or mutual-interlocking portions, to a reception element mounted on the vehicle; preferably the accessory and the reception element mounted on the vehicle can be attached to each other along respective complementary surfaces, on which e.g. there may be the non-permanent mutual fixing means.

Preferably said portion for attachment to the handlebar comprises a ring or a clamp that can be tightened around or on the handlebar, to facilitate installation on a bicycle; and/or

- the accessory comprises non-permanent fixing means, such as Veltro®, magnets or mutual-interlocking portions, to a reception element mounted on the vehicle; the accessory and the reception element can be connected to each other via electrical connectors for electrically connecting the accessory and the reception element; and/or

- the accessory on board comprises an independent battery with which it is electrically powered. In this variant, preferably the accessory comprises a power socket by which the battery can be recharged or by which the accessory can be recharged by a battery; and/or

- the accessory to power- supply itself and/or recharge its own battery, comprises on board a photovoltaic panel or a high capacity capacitor.

It is understood that the actions carried out by the accessory or the portable electronic device are preferably the effect of instructions of a respective software program loaded in them. The software program instructions are preferably carried out by a microprocessor

However, it is also possible to use electronic circuits with non programmable logic or discrete component circuits.

Advantageously, in the portable electronic device the software program instructions are preferably structured and / or comprised in an app.

Further advantages will be clear from the following description, which refers to a preferred embodiment of a system in which:

- figure 1 shows a three-dimensional view of the accessory mounted on a bicycle handlebar;

- figure 2 shows a block diagram of a system formed by the accessory and the bicycle.

The accessory 10 can be attached to the handlebar 8 of a bicycle 6 via a reception element 90.

The bicycle 6 (see diagram in Fig. 2) is equipped with an electric motor M, to assist pedaling, and a signal receiver 98, both managed by an electronic circuit U l (e.g. microprocessor-based).

The reception element 90 is formed e.g. by a ring or clamp 92 that can be tightened around the handlebar 8. The reception element 90 can be also conformed in other ways, e.g. with adhesives, magnets or single screws. A part of the ring or clamp 92 forms an almost flat surface, complementary to the lower surface of the accessory 10. The lower surface and the almost flat surface can be overlapped and serve as positional reference for the joining between the reception element 90 and the accessory 10. These two pieces are joined when the accessory 10 works on and for the bicycle 6, or they may remain separated when the accessory 10 is working independently, away from the bicycle 6.

At the center of the accessory 10 there is a display 20 to display data. The display 20 is driven by an electronic circuit U2, e.g. with a microprocessor, and preferably is a touch screen.

The accessory 10 also comprises

- a receiver 40 of radio signal S2 emitted by a remote device 70; and

- a signal transmitter 42 capable of sending a signal SI to the receiver 98.

To facilitate the detachment between the accessory 10 and the bicycle 6, the transmitter 42 and the transmitter 98 are wireless transceivers through propagation of electromagnetic waves, e.g. Bluetooth®, and the signal S l is wireless, but not necessarily. The signal S l can also travel on a waveguide, like a cable, and the transmitter 42 and the transmitter 98 are in this case electronic circuits to manage analog or digital electrical signals. To such aim, there will be electrical connectors between the accessory 10 and the element 90 to connect the terminals.

The electronic circuit U2 is connected to the display 20, to the receiver 40 and to the transmitter 42, to control them.

The anti-theft defense system for the bicycle 6 works as follows.

When the accessory 10 is attached to the element 90, it works in known way to display data relating to the bicycle 6 and/or the route (e.g. speed and/or travel time) .

Moreover, the electronic circuit U2 is able to detect, via the receiver 40, a signal S2 coming from the remote device 70, such as e.g. a smartphone, in particular from a Bluetooth® transmitter on the smartphone 70.

There are then two operation modes.

Mode 1

If, and only if, the electronic circuit U2 detects the signal S2, it gives the consent for normal operation of the motor M, which otherwise remains blocked or disabled.

The consent or blocking can take place in different ways, depending on the circuit that effectively controls the motor M.

If it is the electronic circuit U2 that controls the operation of the motor M, the block consists in the absence of a signal S l that starts and/or regulates the motor M. The signal Sl is sent via the transmitter 42 directly to the motor M o is a driving signal sent to circuit U 1. If it is the electronic circuit U l that controls the operation of the motor M, the block or consent consists of a signal S l which is sent by the circuit U2 to the circuit Ul to, respectively, inhibit or activate the start and/or the regulation of the motor M by the circuit U 1.

Mode 2

The electronic circuit U2 does not detect the signal S2, and the operation of the motor M remains blocked or disabled. This can happen e.g. in case of loss of the smartphone 70 or if its battery is dead.

In this mode, the electronic circuit U2 is configured to request to the user a security code to unlock the motor M.

The security code can be entered e.g. via the touch-screen 20, or through a keypad (not shown) connected to the circuit U2.

If the electronic circuit U2 verifies that the entered security code has coincides with an internally stored code, it unlocks the motor M.

The use of a smartphone 70 to provide the unlocking signal S2 is very convenient and advantageous, given the widespread use of this device. In practice everyone has at least one.

Each smartphone 70 is equipped with a Bluetooth® transceiver, so the communication with the accessory 10 can exploit existing hardware. The Bluetooth® channel simplifies with the pairing also the unique recognition between the smartphone 70 and the accessory 10.

In the smartphone 70 there is preferably installed an app that manages the generation of the signal S2 and the initial pairing with the accessory 10.

The app can also allow enabling multiple smartphones 70 to send the unblocking signal S2 to the accessory 10.

Instead of the smartphone 70, a tablet, a smart- watch, or any remote transmitter can be used.

It should be noted that a variant is also possible in which the device 10 can only transmit the signal S 1 and the means in the bicycle 6 can only receive it.

Preferably when the accessory 10 is detached from the reception element 90 it turns off or goes into low-power mode, to increase the life of its batteries.