1. A hearing aid, comprising:
a hearing aid housing;
a first humidity sensor for determining a first ambient humidity;
a modification unit for modifying at least one of an operating state or an operating parameter of the hearing aid in dependence on the first ambient humidity determined, said modification unit coupled to said first humidity sensor; and
a second humidity sensor disposed inside said hearing aid housing for determining a second ambient humidity inside said hearing aid housing.
2. The hearing aid according to claim 1, wherein said modification unit modifies at least one hearing aid parameter in dependence on the first ambient humidity detected.
3. The hearing aid according to claim 1, wherein said modification unit switches to another hearing aid program in dependence on the first ambient humidity detected.
4. The hearing aid according to claim 1, wherein said modification unit switches the hearing aid on or off in dependence on the first ambient humidity detected.
5. The hearing aid according to claim 1, wherein said first humidity sensor is disposed on an exterior of said hearing aid housing or is integrated into said hearing aid housing and determines the first ambient humidity outside the hearing aid.
6. The hearing aid according to claim 1, further comprising a signal generation unit for generating a warning signal if the second ambient humidity exceeds a predeterminable threshold value.
7. The hearing aid according to claim 6, further comprising an earpiece for acoustically outputting the warning signal.
8. The hearing aid according to claim 6, wherein the hearing aid transmits the warning signal electromagnetically to a remote control.
9. The hearing aid according to claim 1, further comprising a salt content measurement sensor for determining a salt content outside said hearing aid housing.
10. The hearing aid according to claim 9, wherein said salt content measurement sensor is disposed outside on said hearing aid housing or is integrated into said hearing aid housing.
11. A method for operating a hearing aid, which comprises the steps of:
determining a first ambient humidity;
modifying at least one of an operating state or an operating parameter of the hearing aid in dependence on the first ambient humidity determined; and
determining a second ambient humidity within the hearing aid.
12. The method according to claim 11, wherein the modifying step includes the further steps of:
modifying at least one hearing aid parameter; and
performing at least one of:
switching to another hearing aid program; or
switching the hearing aid on or off in dependence on the first ambient humidity detected.
13. The method according to claim 11, which further comprises determining the first ambient humidity outside of the hearing aid housing of the hearing aid.
14. The method according to claim 11, which further comprises issuing a warning signal if the second ambient humidity exceeds a predeterminable threshold value.
15. The method according to claim 14, which further comprises outputting the warning signal one of acoustically by an earpiece of the hearing aid or transmitting the warning signal electromagnetically to a remote control.
16. The method according to claim 11, which further comprises determining a salt content at least one of on or in the hearing aid housing.
17. The method according to claim 16, which further comprises outputting a salt warning signal if the salt content determined exceeds a predeterminable salt content threshold value.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A dispersion and loss spectrum auto-correction distributed optical fiber Raman temperature sensor, characterized in that it comprises:
a dual fiber pulsed laser module having dual Raman shift wavelengths, which is consisted of a power supply (11), an electronic switch (12), a primary laser (13) and a secondary laser (14);
a first combiner (15);
a bidirectional coupler (16);
a multimode optical fiber (17);
an integrated optical fiber wavelength division multiplexer (18);
a second combiner (19);
a direct detection system (20);
a signal collection and processing system (21); and
a display (22),
wherein output terminals of the primary laser (13) and the secondary laser (14) are respectively connected with an input terminal of the first combiner (15), an output terminal of the first combiner (15) is connected with an input terminal of the bidirectional coupler (16), an output terminal of the bidirectional coupler (16) is connected with an input terminal of the multimode optical fiber (17), backward Rayleigh scattering and Raman scattering echoes of the multimode optical fiber enter an input terminal of the integrated optical fiber wavelength division multiplexer (18) via the bidirectional coupler (16), the integrated optical fiber wavelength division multiplexer (18) has three output ports, the first output port is an output port for the central wavelength of Raman scattering peak, the second output port is an output port for optical fiber backward Rayleigh scattering wave of the primary laser wavelength, the third output port is an output port for the optical fiber backward Rayleigh scattering wave of the secondary laser wavelength, the first output port of the integrated optical fiber wavelength division multiplexer (18) is connected with an input terminal of the direct detection system (20), the second and third output ports of the integrated optical fiber wavelength division multiplexer (18) are respectively connected with two input terminals of the second combiner (19), an output terminal of the second combiner (19) is connected with another input terminal of the direct detection system (20), an output terminal of the direct detection system (20) is connected with an input terminal of the signal collection and processing system (21), and an output terminal of the signal collection and processing system (21) is connected with the display (22).
2. The dispersion and loss spectrum auto-correction distributed optical fiber Raman temperature sensor according to claim 1, characterized in that the primary laser (13) is a fiber pulsed laser with the central wavelength of 980 nm, the spectrum width of 1 nm, the laser pulse width of 18 ns and the peak power of 7 W; the secondary laser (14) is a fiber pulsed laser with the central wavelength of 905 nm, the spectrum width of 1 nm, the laser pulse width of 18 ns and the peak power of 8 W; and the primary laser (13) and the secondary laser (14) are connected with the power supply (11) through the electronic switch (12).
3. The dispersion and loss spectrum auto-correction distributed optical fiber Raman temperature sensor according to claim 1, characterized in that the first output port of the integrated optical fiber wavelength division multiplexer (18) is consisted of a parallel optical fiber path and an optical filter with the central wavelength of 940 nm, the bandwidth of 15 nm and the attenuation loss less than 0.5 dB; the second output port is consisted of a parallel optical fiber path and an optical filter with the central wavelength of 980 nm, the bandwidth of 3 nm and the attenuation loss less than 0.5 dB; and the third output port is consisted of a parallel optical fiber path and an optical filter with the central wavelength of 905 nm, the bandwidth of 3 nm and the attenuation loss less than 0.5 dB.