City: Kyiv
Project manager: Sergiy NaidaTechnology Readiness Level: TRL 4
Designed for early diagnosis of infants, temperature control of internal human organs and in case of hyperthermic effects on malignant tumors, during physiotherapeutic action.
The acoustic thermometer can measure the temperature at a depth of up to 10 cm, with an accuracy of 0.20 C, and with a spatial resolution of 1 mm.
Income is planned from the sale of devices.
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You can ask your questions about the project through the comments form ⇩
You can ask your questions about the project through the comments form ⇩
I have several questions.
ReplyDeleteShow us a model of the thermometer.
How big is it?
Does it need an electronic box to make the measurements?
Show how you use it on a person or other object.
Why is the cost so high?
In production what would cost be?
Make chart compared with thermometers on sale now.
Have doctors used it?
Show us a model of the thermometer. How big is it?
ReplyDeleteThe electrical part of the acoustic thermometer was implemented in a 200*150*50 mm case, to which two serial devices are connected: microvoltmeter В3-57 and universal digital voltmeter B7-27.
The application of an acoustic method for measuring the internal temperature of the human body at a depth of up to 10 cm is innovative, in which a piezo sensor is used to register the own thermal acoustic radiation of the human body in the megahertz frequency range, which works in a completely passive mode, does not emit anything, but only receives fluctuations, so it is harmless for humans. The piezo sensor has direct contact with the patient's body and receives its thermal acoustic radiation. The diameter of the piezo sensor is 30 mm.
Does it need an electronic box to make the measurements?
Yes, to measure the depth temperature, an electrical part is needed, which contains a noise simulator; an electronic switch; high frequency amplifier; amplitude detector; synchronous detector; recording device.
Show how you use it on a person or other object.
The noisy acoustic signal from the output of the piezo sensor is fed to a broadband high-frequency amplifier, detected by an amplitude detector, and fed to a synchronous detector, which receives a reference voltage from a noise simulator. From the output of the synchronous detector, the signal is fed to the recording device. When the values of the reference voltage, caused by the acoustic thermometer's own noise, and the voltage from the output of the piezo sensor, which has a contact with the patient's body, coincide, the recording device should be set to zero. When not, the doctor sees on the screen of the recording device the temperature difference between the room temperature and the temperature in the focal zone of the piezo sensor, that is the deep temperature of the human body.
Why is the cost so high?
Because the device must register a very weak noise signal, which is caused by the Brownian motion of atoms and molecules of the human body. The higher the temperature, the more intense the noise that causes this motion. And the problem is precisely to register this very weak noise, for which a focusing piezo sensor and a complex electronic circuit are used.
In production what would cost be?
To estimate the cost of an industrial sample, firstly we aim to manufacture an experimental and industrial sample of a portable acoustic thermometer without using serial devices. All circuit solutions have already been developed for this purpose.
Make chart compared with thermometers on sale now.
The lack of industrial samples of acoustic thermometers with the accuracy of depth temperature determination required for the purposes of passive diagnostics served as a stimulus for this work. There is currently no analogue of such a device in the world. An alternative to the acoustic thermometer can be a radio frequency thermometer of depth temperature, which is also a complex and expensive device https://patents.google.com/patent/US10506930B2/en, while losing in spatial resolution.
Have doctors used it?
The device has not yet been used in medical practice. Its full experimental research was carried out in laboratory conditions.