Communications: electrical – Selective – Interrogation response
Reexamination Certificate
1998-05-08
2001-08-14
Zimmerman, Brian (Department: 2635)
Communications: electrical
Selective
Interrogation response
C340S005610, C320S108000, C320S118000
Reexamination Certificate
active
06275143
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a security device that has wireless energy transmission. More specifically, this invention relates to a wireless energy system that transmits wireless energy to a receiving system which uses that received energy to actuate an electromechanical device.
2. Description of the Prior Art
Small household appliances and electric tools have been known to transmit energy wirelessly. In these devices, a voltage is induced via an A-C power primary coil of a charging station to a secondary coil integrated in the appliance. The secondary coil serves as a charger for a storage battery connected to the appliance. To charge the battery, it is placed in a charging station, so that the secondary coil is inductively coupled with the primary coil to charge the battery.
Wireless energy transmission and the transmission of data is known from transponder systems shown in German Patent No. DE-PS 4,003,410 C2, where a base station can be coupled to one or more transponders. The base station comprises at least one high-frequency transmitter, which may be both an energy transmitter at the same time, and a data transmitter. The transponder comprises an HF-receiver, which may be both an energy receiver and a data receiver. The transponder may be equipped without its own energy source because it receives the energy from the base station. As a rule, transponder systems also have a data transmission circuit in the reverse direction. A transmitter or modulator is located in the transponder and a receiver is located in the base station. In these systems, the base station may be equipped with an actuator in the form of a lock or an opener. The actuator can be actuated within the framework of an access control system when a transponder, equipped with an access authorization code is introduced in the field of the base station. If the code matches, the lock opens. These base stations are always equipped with their own energy source, which is connected to an AC power source. However, battery operated systems are also available.
Furthermore, there are also remote control systems. These systems consist of a transmitter and a receiver, whereby the receiving device is coupled with an active element. With these systems, data is transmitted only to the receiving device. However, the receiving device and any evaluation electronics that are present are supplied with energy from their own batteries or by an accumulator storage battery.
SUMMARY OF THE INVENTION
The invention is based upon improving a device for wireless energy transmission so that the receiving device is fully operational without its own energy source.
The invention relates to an energy supply for the receiving device and the actuator executing the mechanical and electrical operation action. The energy is transmitted from the transmitting device to the receiving device. Therefore, since the receiving device is capable of being operated continuously, entirely free of maintenance, there is no exhaustion of any energy source. Any action of the actuator within this receiving device can be controlled and therefore influenced specifically. Therefore apart from the event of energy transmission as one criterion there is an additional criterion of control representing a safety against tampering attempts or unintentional tripping.
An action in the receiver can be tripped in many different ways. For example, the actuator can be tripped by remote control from the transmitting device. In addition, automatic tripping of the receiving device can be achieved by means of a sensor. A further possibility is the triggering of the action after comparing a code transmitted by the transmitter with a code stored in the receiving device. Furthermore, tripping may occur upon the authentication of data exchanged between the transmitting device and the receiving device. These additional security devices insure that one additional criterion or a plurality of additional criterion are tested before the action is tripped, so that there is increased safety available against unintentional tripping or unwanted break-ins.
If there are several actuator elements present, the action may trip according to the individual design of each actuator.
The receiving device may comprise a temporary energy storage, which is chargeable by transmitted energy from the transmitting device to the receiving device. The temporary energy storage can supply the receiving device with energy during transmission breaks or during peak consumption.
Thus, the receiving device remains independent of stability and amount of energy transmission. In this way, an electronic circuit is capable of continuously operating over a limited period of time, or an actuator can be used which, for a short time, requires more power than can be transmitted by the transmitting device to the receiving device. The actuators may be for example, solenoids, electromagnets or motors.
The RF sensor of the receiving device may be a frequency detector and a voltage-value detector for the energy signal sent by the transmitting device. Furthermore, the sensor may be a time sensor, or a detector for an external physical quantity, and may control the actuator by means of a control unit.
Through the sensors it is possible to control the actuator without depending on any energy. For example, the frequency detector may be a selective resonant circuit, which trips the actuator only if the energy signal is transmitted on a defined frequency. The voltage-value detector may be adjusted to the amount of a defined voltage. This defined voltage may be due to a peak voltage of the signal transmitted by the transmitting device to the receiving device, or to a voltage occurring when the temporary energy storage is changed.
In addition, an internal timer can also be used to trip the action only if the energy signal is available for a predetermined period of time. Furthermore, detectors can be used to activate the system based upon temperature, pressure, sound levels, brightness, acceleration etc.
The receiving device may comprise a logic element or a processor circuit designed to evaluate or interpret remote control signals of the transmitting device. In addition, the receiving device may comprise a decoder which evaluates authentication data transmitted by the transmitting device and releases the actuator if the authentication data is valid.
This measure relocates an additional safety test into the receiving device. It is possible to individually limit the control possibilities of the receiving devices. This is useful, for example when there are a plurality of receiving devices and persons with different authorizations are involved. Authorized persons with low authorization status can then remotely control only defined receiving devices whereas authorized persons with a higher authorization status can influence a plurality of receiving devices.
The receiving device may include a separate data transmitter and the transmitting device a separate data receiver for bi-directional communication. Authentication data can be stored in both the memory of the transmitting device, and the memory of the receiving device. Decoders can be used in both the transmitting device and the receiving device. In this case, authentication data can be mutually transmitted upon request and tested for their validity. The sensor and the acting element are releasable only if both the authentication or verification data are valid.
Security against tampering or manipulation is also improved by this design. The unknown code employed in the data transmission makes it very hard to decipher. In addition, verification activities can be stored in the memory unit of the transmitting device or the receiving device. Protocols of all authentication activities are automatically generated to uncover misuse or irregularities at a later time.
According to another advantageous embodiment of the invention, the energy required to feed the sensor and the actuator is transmitted to the receiving device simultaneously with a data transmiss
Collard & Roe P.C.
Zimmerman Brian
LandOfFree
Security device having wireless energy transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Security device having wireless energy transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Security device having wireless energy transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2455351