Integrated heater and temperature measurement
Disclosed herein is an integrated heater and measurement (IHM) device comprising heating-sensing element(s) and heating-sensing circuit(s). A heating-sensing element generates heat and determines the temperature of the IHM device. In some embodiments, the heating-sensing element may operate in a plurality of modes: heating mode, sensing mode, and/or off mode. A controller may dynamically adjust the properties of the operation mode and/or time periods based on the determined temperature. The adjusted properties may include the duration of the heating mode, the ON time for a heating-sensing element, etc. The controller may adjust the duration of heating mode based on the temperature difference between the determined temperature and a set point temperature, such as decreasing the duration of the heating mode when there is a low temperature difference, and increasing the duration of the heating mode when there is a high temperature difference.
1. An integrated heater and temperature measurement (IHM) device, comprising:
a heating-sensing element configured to both generate heat and determine a temperature of the heating-sensing element; and
a controller configured to dynamically adjust one or more properties of the heating-sensing element, wherein the one or more properties include at least one of: a duration of a heating mode of the heating-sensing element, a duty cycle of an ON pulse of the heating-sensing element, and an ON time for the heating-sensing element.
2. The IHM device of claim 1 , wherein the controller is configured to:
determine a resistance of the heating-sensing element, wherein the temperature of the heating-sensing element is determined based on the resistance.
3. The IHM device of claim 2 , wherein the controller determines the temperature of the heating-sensing element based on resistance-temperature relationships.
4. The IHM device of claim 3 , wherein the resistance-temperature relationships are included in calibration data stored in a non-volatile memory chip, coded into a 1D or 2D code, or stored in a remote database.
5. The IHM device of claim 3 , wherein the resistance-temperature relationships are included in printed circuit assembly (PCA) calibration data.
6. The IHM device of claim 1 , wherein controller is configured to dynamically adjust the duration of the heating mode based on a temperature difference between the determined temperature of the heating-sensing element and a set point temperature.
7. The IHM device of claim 1 , comprising:
a set of pins coupled to the heating-sensing element for communicating signals for both the generation of heat and the determination of the temperature of the heating-sensing element.
8. The IHM device of claim 1 , wherein the heating-sensing element is configured to generate heat and determine a temperature of a first zone, the IHM device further comprises:
a second heating-sensing element configured to both generate heat and determine a temperature of a second zone.
9. The IHM device of claim 8 , wherein the heating-sensing element is independent from the second heating sensing-element.
10. The IHM device of claim 8 , wherein the first zone is a high-power zone, and the second zone is a low-power zone.
11. The IHM device of claim 1 , further comprising:
a second heating-sensing element, wherein the heating-sensing element and the second heating-sensing element are formed on the same layer of the IHM device.
12. The IHM device of claim 1 , further comprising:
a second heating-sensing element, wherein the heating-sensing element and the second heating sensing element are formed on different layers of the IHM device.
13. The IHM device of claim 1 , comprising:
a first insulating material, a second insulating material, and a third insulating material; and
a shield located between the first insulating material and the second insulating material,
wherein the heating-sensing element is located between the second insulating material and the third insulating material.
14. The IHM device of claim 1 , wherein the heating-sensing element is configured to turn on and off in succession.
15. The IHM device of claim 14 , where the heating-sensing element is on during a heating mode, and off during a sensing mode or an off mode.
16. The IHM device of claim 1 , wherein the heating-sensing element comprises tungsten, iron, kovar, moly, palladium, platinum, or a combination thereof.
17. A method for controlling a temperature using an integrated heater and temperature measurement (IHM) device, comprising:
generating heat using a heating-sensing element of the IHM device;
determining a temperature of the heating-sensing element of the IHM device using the heating-sensing element; and
dynamically adjusting one or more properties of the heating-sensing element, wherein the one or more properties include at least one of: a duration of a heating mode of the heating-sensing element, a duty cycle of an ON pulse of the heating-sensing element, and an ON time for the heating-sensing element.
18. The method of claim 17 , further comprising:
determining a resistance of the heating-sensing element, wherein the temperature of the heating-sensing element is determined based on the resistance.
19. The method of claim 18 , wherein the determining the temperature of the heating-sensing element comprises using resistance-temperature relationships.
20. The method of claim 19 , further comprising:
accessing the resistance-temperature relationships in a non-volatile memory chip, a 1D or 2D code, or a remote database.
21. The method of claim 19 , wherein the dynamically adjusting the duration of the heating mode is based on a temperature difference between the determined temperature of the heating-sensing element and a set point temperature.
22. The method of claim 17 , further comprising:
communicating signals for the generating the heat and the determined temperature using a set of pins coupled to the heating-sensing element.
23. The method of claim 17 , wherein the generating the heat using the heating-sensing element and the determining the temperature of the heating-sensing element generates heat and determines a temperature of a first zone, the method further comprising:
generating heat using a second heating-sensing element of the IHM device; and
determining a temperature of the second heating-sensing element, wherein the generating the heat using the second heating-sensing element and the determining the temperature of the second heating-sensing element generates heat and determines a temperature of a second zone.
24. The method of claim 23 , wherein the generating the heat using the heating-sensing element is independent from the generating the heating using the second heating-sensing element.