Energy self-sufficient radiofrequency transmitter

Abstract

The energy self-sufficient radiofrequency transmitter has at least one electromechanical transducer with a rectifier circuit connected downstream and with a voltage converter circuit. A logic circuit configuration is connected to the voltage converter circuit. The logic circuit configuration has a sequence controller a memory in which an identification code is stored. The energy self-sufficient radiofrequency transmitter also has a radiofrequency transmission stage that is connected to the logic circuit configuration and a transmission antenna.

1 . An energy self-sufficient radiofrequency transmitter, comprising:
 at least one electromechanical transducer;   a rectifier circuit connected downstream from said transducer;   a voltage converter circuit;   a logic circuit configuration connected to said voltage converter circuit, said logic circuit configuration including a sequence controller and a memory for storing an identification code;   a radiofrequency transmission stage connected to said logic circuit configuration; and   at least one transmission antenna.   
     
     
         2 . The energy self-sufficient radiofrequency transmitter according to  claim 1 , wherein said electromechanical transducer includes at least one piezoelectric element. 
     
     
         3 . The energy self-sufficient radiofrequency transmitter according to  claim 2 , wherein said piezoelectric element is a bending transducer. 
     
     
         4 . The energy self-sufficient radiofrequency transmitter according to  claim 1 , wherein said electromechanical transducer includes at least one induction coil. 
     
     
         5 . The energy self-sufficient radiofrequency transmitter according to  claim 1 , wherein said voltage converter circuit includes an energy storage element. 
     
     
         6 . The energy self-sufficient radiofrequency transmitter according to  claim 5 , wherein said voltage converter circuit can be operated in a clocked manner. 
     
     
         7 . The energy self-sufficient radiofrequency transmitter according to  claim 1 , comprising at least one capacitor for storing energy; said capacitor connected between said rectifier circuit and said voltage regulating circuit. 
     
     
         8 . The energy self-sufficient radiofrequency transmitter according to  claim 1 , wherein said logic circuit configuration includes at least one component selected from a group consisting of at least one microprocessor and an ASIC. 
     
     
         9 . The energy self-sufficient radiofrequency transmitter according to  claim 1 , comprising at least one sensor connected to said logic circuit configuration. 
     
     
         10 . The energy self-sufficient radiofrequency transmitter according to  claim 1 , wherein said logic circuit configuration is embodied using ULP technology. 
     
     
         11 . The energy self-sufficient radiofrequency transmitter according to  claim 1 , wherein said logic circuit configuration has clock generator including an LC resonant circuit or an RC resonant circuit. 
     
     
         12 . The energy self-sufficient radiofrequency transmitter according to  claim 1 , wherein said radiofrequency transmission stage is constructed for transmitting a radiofrequency signal having a frequency of greater than 1 MHz. 
     
     
         13 . The energy self-sufficient radiofrequency transmitter according to  claim 12 , wherein said radiofrequency transmission stage is constructed for, transmitting a radiofrequency signal having a frequency between 100 MHz and 30 GHz. 
     
     
         14 . The energy self-sufficient radiofrequency transmitter according to  claim 12 , wherein the radiofrequency signal can Have a bandwidth of more than 100 kHz. 
     
     
         15 . The energy self-sufficient radiofrequency transmitter according to  claim 1 , comprising a delay device connected between said logic circuit configuration and said transmission antenna. 
     
     
         16 . A method for energy self-sufficiently transmitting a radiofrequency signal, which comprises:
 using an electromechanical transducer to convert a mechanical movement into a voltage signal;   obtaining a rectified voltage signal by rectifying the voltage signal;   converting the rectified voltage signal to produce a voltage level that is constant at least in sections;   after converting the rectified signal, using the rectified voltage signal to supply energy to at least one logic circuit configuration;   using the logic circuit configuration to communicate at least one identification code to a radiofrequency transmission stage; and   using the radiofrequency transmission stage and a transmission antenna to radiate a radiofrequency signal containing the identification code.   
     
     
         17 . The method according to  claim 16 , wherein the step of using the logic circuit configuration to communicate the identification code to the radiofrequency transmission stage includes:
 reading out the identification code from a memory of the logic circuit configuration;   generating a transmission telegram including the identification code;   activating the radiofrequency transmission stage; and   modulating a radiofrequency oscillation with the transmission telegram.   
     
     
         18 . The method according to  claim 16 , which comprises:
 providing measurement data obtained from at least one sensor to the logic circuit configuration; and   impressing the measurement data on the radiofrequency signal.   
     
     
         19 . The method according to  claim 16 , which comprises radiating a plurality of radiofrequency signals one after another; each one of the plurality of the radiofrequency signals having a complete information content. 
     
     
         20 . The method according to  claim 19 , which comprises variably setting a time interval of individual ones of the plurality of the radiofrequency signals with respect to one another. 
     
     
         21 . The method according to  claim 19 , which comprises variably setting a frequency of individual ones of the plurality of the radiofrequency signals with respect to one another. 
     
     
         22 . The method according to  claim 16 , which comprises encrypting information of the radiofrequency signal. 
     
     
         23 . The method according to  claim 22 , which comprises differently encrypting a plurality of radiofrequency signals. 
     
     
         24 . The method according to  claim 16 , which comprises radiating the radiofrequency signal in a time-delayed manner. 
     
     
         25 . The method according to  claim 16 , which comprises transmitting the radiofrequency signal with a bandwidth greater than 100 kHz. 
     
     
         26 . The method according to  claim 16 , which comprises transmitting the radiofrequency signal with a frequency of greater than 1 MHz. 
     
     
         27 . The method according to  claim 16 , which comprises transmitting the radiofrequency signal with a frequency of between 100 MHz and 30 GHz. 
     
     
         28 . A method of using an energy self-sufficient radiofrequency transmitter, which comprises:
 providing the energy self-sufficient radiofrequency transmitter with:
 at least one electromechanical transducer, a rectifier circuit connected downstream from said transducer, 
 a voltage converter circuit, 
 a logic circuit configuration connected to said voltage converter circuit, said logic circuit configuration including a sequence controller and a memory for storing an identification code, 
 a radiofrequency transmission stage connected to said logic circuit configuration, and 
 at least one transmission antenna; and 
   using the energy self-sufficient radiofrequency transmitter in a technology selected from a group consisting of traffic technology, automotive technology, building technology, and installation technology.