Remote temperature sensing device and related remote temperature sensing method

• US 7,985,022 B2
• Filed: 03/01/2007
• Issued: 07/26/2011
• Est. Priority Date: 03/01/2007
• Status: Expired due to Fees

• Current Assignee: Metglas, Inc. (Proterial Ltd.)
• Original Assignee: Metglas, Inc. (Proterial Ltd.)
• Inventors: Azuma, Daichi, Hasegawa, Ryusuke
• Primary Examiner(s): Caputo; Lisa M
• Assistant Examiner(s): Jagan; Mirellys
• Application Number:
  US11/712,449
• Publication Number:
  US 20080212646A1
• Time in Patent Office: 1,608 Days
• Field of Search: 374/176, 374/177
• US Class Current: 374/176
• CPC Class Codes: G01K 1/024 for remote indication
• CPC Class Codes: G01K 13/08 in rotary movement
• CPC Class Codes: G01K 7/38 the variations of temperature influencing the magnetic permeability

Abstract

A device and method of remote temperature sensing, the device having a temperature sensor placeable on a rotating item utilizing the temperature sensor being a plurality of rectangular shaped amorphous magnetic alloy strips connected magnetically, wherein at least one of the strips has a predetermined ferromagnetic Curie temperature and another strip has a magnetic permeability exceeding 2,000.

Claims

1. A remote temperature sensing device having a temperature sensor placeable on a rotating item, comprising:

the temperature sensor being a plurality of rectangular-shaped amorphous magnetic alloy strips connected magnetically, wherein at least one of the amorphous magnetic alloy strips has a predetermined ferromagnetic Curie temperature and another amorphous magnetic alloy strip has a magnetic permeability exceeding 2,000, and the temperature sensor is placeable on the rotating item, wherein said temperature sensor is interrogated by a magnetic field and said temperature sensor'"'"'s response signal is detected electromagnetically.

2. The remote temperature sensing device of claim 1, wherein the amorphous magnetic alloy strips with the predetermined ferromagnetic Curie temperature have a composition defined essentially by the formula:

Fe_a, M_bB_cSi_dC_e, wherein 61<

a<

81, 0<

b <

15, 2≦

c<

25, 0<

d<

10 and 0<

e≦

18 and a+b+c+d+e=100, numbers being in atom percent, with the proviso that up to 50% of Fe content may be replaced by Ni, and M being selected from Cr, Mo, Nb, Ti, and W.

3. The remote temperature sensing device of claim 1, wherein the another amorphous magnetic alloy strip having a magnetic permeability exceeding 2,000 has a composition defined essentially by the formula:

Fe_aNi_bCo_cM_eB_fSi_gC_h wherein 3<

a<

80, 0<

b<

41, 0<

c<

72, 0<

e<

4, with M selected from Cr, Mo, and Mn, 1<

f<

20, 0<

g<

16 and 0<

h<

4, and a+b+c+e+f+g+h=100, numbers being in atom percent.

4. The remote temperature sensing device of claim 1, wherein the sensing device comprises:

one amorphous magnetic alloy strip with the predetermined ferromagnetic Curie temperature and that has a composition defined essentially by the formula;

Fe_aM_bB_cSi_dC_e, wherein 61<

a<

81, 0<

b<

15, 2≦

c<

25, 0<

d<

10 and 0<

e≦

18 and a+b+c+d+e=100, numbers being in atom percent, with the proviso that up to 50% of Fe content may be replaced by Ni, and M being selected from Cr, Mo, Nb, Ti, and W; and

the another amorphous magnetic alloy strip having a magnetic permeability exceeding 2,000 has a composition defined essentially by the formula;

Fe_aNi_bCo_cM_e, B_fSi_gC_h wherein 3<

a<

80, 0<

b<

41, 0<

c<

72, 0<

e<

4, with M selected from Cr, Mo, and Mn, 1<

f<

20, 0<

g<

16 and 0<

h<

4, and a+b+c+e+f+g+h=100, numbers being in atom percent.

5. The remote temperature sensing device of claim 1, wherein the another strip of the sensing device comprises:

two amorphous magnetic alloy strips having a magnetic permeability exceeding 2,000, the two amorphous magnetic alloy strips having two different compositions defined essentially by the formula;

Fe_aNi_bCo_cM_e,B_fSi_gC_h wherein 3<

a<

80, 0<

b<

41, 0<

c<

72, 0<

e<

4, with M selected from Cr, Mo, and Mn, 1 <

f<

20, 0<

g<

16 and 0<

h<

4, and a+b+c+e+f+g+h=100, numbers being in atom percent.

6. The remote temperature sensing device of claim 1, wherein the sensing device comprises:

one amorphous magnetic alloy strip with the predetermined ferromagnetic Curie temperature and that has a composition defined essentially by the formula;

Fe_aM_bB_cSi_dC_e, wherein 61<

a<

81, 0<

b<

15, 2<

c≦

25, 0<

d<

10 and 0<

e≦

18 and a+b+c+d+e=100, numbers being in atom percent, with the proviso that up to 50% of Fe content may be replaced by Ni, and M being selected from Cr, Mo, Nb, Ti, and W; and

the another strip having a magnetic permeability exceeding 2,000 comprises two amorphous magnetic alloy strips with a same chemical composition defined essentially by the formula;

Fe_aNi_bCo_cM_e, B_fSi_gC_h wherein 3<

a<

80, 0<

b<

41, 0<

c<

72, 0<

e<

4, with M selected from Cr, Mo, and Mn, 1<

f<

20, 0<

g<

16 and 0<

h<

4, and a+b+c+e+f+g+h=100, numbers being in atom percent.

7. The remote temperature sensing device of claim 1, wherein the sensing device comprises:

the at least one amorphous magnetic alloy strip having a magnetic permeability exceeding 2,000, having a composition defined essentially by the formula;

Fe_aNi_b Co_cM_eB_fSi_gC_hwherein 3<

a<

80, 0<

b<

41, 0<

c<

72, 0<

e<

4, with M selected from Cr, Mo, and Mn, 1<

f<

20, 0<

g<

16 and 0<

h<

4, and a+b+c+e+f+g+h=100, numbers being in atom percent; and

a plurality of amorphous magnetic alloy strips with different chemical compositions defined essentially by the formula;

Fe_aM_bB_cSi_dC_e, wherein 61<

a<

81, 0<

b<

15, 2≦

c<

25, 0<

d<

10 and 0<

e≦

18 and a+b+c+d+e=100, numbers being in atom percent, with the proviso that up to 50% of Fe content may be replaced by Ni, and M being selected from Cr, Mo, Nb, Ti, and W and defined essentially by the formula;

Fe_aNi_bCo_cM_eB_fSi_gC_h wherein 3<

a<

80, 0<

b<

41, 0<

c<

72, 0<

e<

4, with M selected from Cr, Mo, and Mn, 1<

f<

20, 0<

g<

16 and 0<

h<

4, and a+b+c+e+f+g+h=100, numbers being in atom percent.

8. The remote temperature sensing device of claim 1, wherein the sensing device comprises at least one coil emanating an interrogating magnetic field and at least one coil detecting a magnetic response of said temperature sensor.

9. The remote temperature sensing device of claim 1, wherein the rotating item is a vehicle tire.

10. The remote temperature sensing device of claim 1, wherein said temperature sensor is interrogatable by an AC magnetic field.

11. The remote temperature sensing device of claim 1, wherein said temperature sensor is interrogated by an AC magnetic field.

12. A method of utilizing a remote temperature sensing device having a temperature sensor placeable on a rotating item, the method comprising:

connecting a plurality of rectangular-shaped amorphous magnetic alloy strips magnetically, wherein at least one of the amorphous magnetic alloy strips has a predetermined ferromagnetic Curie temperature and another amorphous magnetic alloy strip has a magnetic permeability exceeding 2,000 to form the temperature sensor;

affixing the temperature sensor to the rotating item; and

interrogating the temperature sensor by a magnetic field and detecting said temperature sensor'"'"'s response signal electromagnetically.

13. The method of claim 12, further comprising preparing the amorphous magnetic alloy strips with the predetermined ferromagnetic Curie temperature to have a composition defined essentially by the formula:

Fe_aM_bB_cSi_dC_e, wherein 61<

a<

81, 0<

b<

15, 2≦

c<

25, 0<

d<

10 and 0<

e≦

18 and a+b+c+d+e=100, numbers being in atom percent, with the proviso that up to 50% of Fe content may be replaced by Ni, and M being selected from Cr, Mo, Nb, Ti, and W.

14. The method of claim 12, further comprising preparing at least one amorphous magnetic alloy strip to have a magnetic permeability exceeding 2,000 and a composition defined essentially by the formula:

Fe_aNi_bCo_cM_eB_fSi_gC_h wherein 3<

a<

80, 0<

b<

41, 0<

c<

72, 0<

e<

4, with M selected from Cr, Mo, and Mn, 1<

f<

20, 0<

g<

16 and 0<

h<

4, and a+b+c+e+f+g+h=100, numbers being in atom percent.

15. The method of claim 12, further comprising preparing the amorphous magnetic alloy strips,

wherein one amorphous magnetic alloy strip with the predetermined ferromagnetic Curie temperature has a composition defined essentially by the formula:

Fe_aM_bB_cSi_dC_e, wherein 61<

a<

81, 0<

b<

15, 2≦

c<

25, 0<

d<

10 and 0<

e≦

18 and a+b+c+d+e=100,numbers being in atom percent, with the proviso that up to 50% of Fe content may be replaced by Ni, and M being selected from Cr, Mo, Nb, Ti, and W; and

wherein the another amorphous magnetic alloy strip has a magnetic permeability exceeding 2,000 and a composition defined essentially by the formula;

Fe_aNi_bCo_cM_eB_fSi_gC_h wherein 3<

a<

80, 0<

b<

41, 0<

c<

72, 0<

e<

4, with M selected from Cr, Mo, and Mn, 1<

f<

20, 0<

g<

16 and 0<

h<

4, and a+b+c+e+f+g+h=100, numbers being in atom percent.

16. The method of claim 12, further comprising preparing the at least one of the strips having a predetermined ferromagnetic Curie temperature and the another strip of the sensing device by preparing at least two amorphous magnetic alloy strips, wherein the at least one strip has a magnetic permeability exceeding 2,000 and the at least one alloy strip and the another strip each have two different compositions defined essentially by the formula:

Fe_aNi_bCo_cM_e,B_fSi_gC_h wherein 3<

a<

80, 0<

b<

41, 0<

c<

72, 0<

e<

4, with M selected from Cr, Mo, and Mn, 1<

f<

20, 0<

g<

16 and 0<

h<

4, and a+b+c+e+f+g+h=100, numbers being in atom percent.

17. The method of claim 12, further comprising preparing the two amorphous magnetic alloy strips, wherein one amorphous magnetic alloy strip has the predetermined ferromagnetic Curie temperature and a composition defined essentially by the formula:

Fe_aM_bB_cSi_dC_e, wherein 61<

a<

81, 0<

b<

15, 2≦

c<

25, 0<

d<

10 and 0<

e≦

18 and a+b+c+d+e=100, numbers being in atom percent, with the proviso that up to 50% of Fe content may be replaced by Ni, and M being selected from Cr, Mo, Nb, Ti, and W; and

the another strip has a magnetic permeability exceeding 2,000 so that the amorphous magnetic alloy strips comprise a same chemical composition defined essentially by the formula;

Fe_aNi_bCo_cM_e B_fSi_gC_h wherein 3<

a<

80, 0<

b<

41, 0<

c<

72, 0<

e<

4, with M selected from Cr, Mo, and Mn, 1<

f<

20, 0<

g<

16 and 0<

h<

4, and a+b+c+e+f+g+h=100, numbers being in atom percent.

18. The method of claim 12, further comprising:

preparing the at least one amorphous magnetic alloy strip having a magnetic permeability exceeding 2,000 and having a composition defined essentially by the formula;

Fe_aNi_bCo_cM_e B_fSi_gC_h wherein 3<

a<

80, 0<

b <

41, 0<

c<

72, 0<

e<

4 , with M selected from Cr,Mo,and Mn, 1<

f<

20, 0<

g<

16 and 0<

h<

4,and a+b+c+e+f+g+h=100, numbers being in atom percent; and

preparing a plurality of amorphous magnetic alloy strips with different chemical compositions defined essentially by the formula;

Fe_aM_bB_cSi_dC_e, wherein 61<

a <

81, 0<

b <

15, 2≦

c<

25, 0<

d<

10 and 0<

e ≦

18 and a+b+c+d+e=100, numbers being in atom percent, with the proviso that up to 50% of Fe content may be replaced by Ni, and M being selected from Cr, Mo, Nb, Ti, and W and defined essentially by the formula;

Fe_aNi_bCo_cM_e B_fSi_gC_h wherein 3<

a<

80, 0<

b <

41, 0<

c<

72, 0<

e<

4, with M selected from Cr, Mo, and Mn, 1<

f<

20, 0<

g<

16 and 0<

h<

4, and a+b+c+e+f+g+h=100, numbers being in atom percent.

19. The method of claim 12, wherein interrogating the temperature sensor comprises using at least one coil to emanate an interrogating magnetic field, and using at least one coil to detect a magnetic response of said temperature sensor.

20. The method of claim 12, wherein affixing the temperature sensor to the rotating item comprises affixing the temperature sensor to a vehicle tire.

21. The method of claim 12, further comprising interrogating the temperature sensor with an AC magnetic field.

22. The method of claim 12, wherein interrogating is carried out with an AC magnetic field.