Imaging devices with selectively alterable characteristics
In one example in accordance with the present disclosure, an imaging device is described. The imaging device includes an array of transducers. Each transducer includes an array of piezoelectric elements. Each piezoelectric element transmits pressure waves towards an object to be imaged and receives reflections of the pressure waves off the object to be imaged. The imaging device also includes a transmit channel per one or more piezoelectric elements to generate the pressure waves and a receive channel per one or more piezoelectric elements to process the reflections of the pressure waves. The number of channels are selectively altered to control parameters such as power consumption and temperature.
1. A method for selectively altering a plurality of channels of an imaging device, the method comprising:
receiving an indication to reduce power consumption at the imaging device, the imaging device comprising an array of piezoelectric micromachined ultrasonic transducers (pMUTs) connected to a plurality of transmit channels and a plurality of receive channels; and
in response to receiving the indication: (i) altering a state of at least one transmit channel of the plurality of transmit channels, the plurality of transmit channels being configured to cause the array of pMUTs to transmit a pressure wave; and/or (ii) altering a state of at least one receive channel of the plurality of receive channels, the plurality of receive channels being configured to process a reflection of the pressure wave received by the array of pMUTs.
2. The method of claim 1 , wherein altering the state of the at least one transmit channel and/or the at least one receive channel comprises deactivating the at least one transmit channel and/or the at least one receive channel.
3. The method of claim 1 , wherein altering the state of the at least one transmit channel and/or the at least one receive channel comprises reducing a power consumption level of the at least one transmit channel and/or the at least one receive channel.
4. The method of claim 1 , wherein altering the state of the at least one transmit channel and/or the at least one receive channel comprises adjusting noise levels of a low noise amplifier (LNA), adjusting transmit voltage levels used by the pMUTs, and adjusting a plurality of elements used for transmission and reception.
5. The method of claim 1 , wherein altering the state of the at least one transmit channel and/or the at least one receive channel comprises altering the state of the at least one transmit channel and/or the at least one receive channel for an entirety of an imaging cycle.
6. The method of claim 5 , wherein the entirety of the imaging cycle comprises formation of an image scan line.
7. The method of claim 1 , wherein altering the state of the at least one transmit channel and/or the at least one receive channel comprises altering the state of the at least one transmit channel and/or the at least one receive channel for a portion of the imaging cycle.
8. The method of claim 1 , wherein the indication is an indication of a low-resolution imaging mode.
9. The method of claim 1 , wherein the imaging device further comprises a temperature sensor configured to detect temperature of the imaging device, and the indication is an indication that a threshold temperature of the imaging device has been reached.
10. The method of claim 1 , wherein the imaging device further comprises a battery configured to provide power to the imaging device, and the indication is an indication that a charge of the battery is low.
11. A method for selectively altering a plurality of channels of an imaging device comprising a battery configured to provide power to the imaging device, the method comprising:
receiving, at the imaging device, an indication that a charge of the battery is low; and
altering a state of at least one of a plurality of transmit channels and a plurality of receive channels based on the received indication.
12. The method of claim 11 , wherein the indication is an indication to reduce power consumption, and altering the state of the at least one of the plurality of transmit channels and/or the plurality of receive channels comprises deactivating the plurality of transmit channels and the plurality of receive channels.
13. The method of claim 11 , wherein the indication is an indication to reduce power consumption, and altering the state of the at least one of the plurality of transmit channels and/or the plurality of receive channels comprises reducing a power consumption level of the plurality of transmit channels and the plurality of receive channels.
14. The method of claim 11 , wherein altering the state of the at least one of the plurality of transmit channels and/or the plurality of receive channels comprises adjusting noise levels of a low noise amplifier (LNA), adjusting transmit voltage levels used by piezoelectric micromachined ultrasonic transducers (pMUTs), and adjusting a plurality of elements used for transmission and reception.
15. The method of claim 11 , wherein altering the state of the at least one transmit channel and/or the at least one receive channel comprises altering the state of the at least one transmit channel and/or the at least one receive channel for an entirety of an imaging cycle.
16. The method of claim 15 , wherein the entirety of the imaging cycle comprises formation of an image scan line.
17. The method of claim 11 , wherein altering the state of the at least one transmit channel and/or the at least one receive channel comprises altering the state of the at least one transmit channel and/or the at least one receive channel for a portion of the imaging cycle.
18. The method of claim 11 , wherein the indication is an indication of a low-resolution imaging mode.
19. The method of claim 11 , wherein the imaging device further comprises a temperature sensor configured to detect temperature of the imaging device, and the indication is an indication that a threshold temperature of the imaging device has been reached.
20. A method for selectively altering a plurality of channels of an imaging device, the method comprising:
receiving an indication of a low-resolution imaging mode at the imaging device; and
altering a state of at least one of a plurality of transmit channels and a plurality of receive channels based on the received indication.