Electronic environment sensing instrument having an analog indicator
First Claim
1. An electronic environment sensing instrument having an analog indicator, comprising:
- a casing having a front panel witha front face having at least one scale with an associated indicating needle;
a rear face; and
a central through hole;
an electronic driving indicator assembly attached to the rear face of the front panel for imparting movement to the indicating needle and havinga sensor for sensing and measuring an environmental parameter outside the casing;
a detecting and driving circuit for converting a sensed environmental parameter to a voltage;
an electronic drive unit receiving the voltage; and
a gear assembly operated by the drive unit, wherein the drive unit is connected between the gear assembly and the detecting and driving circuit;
wherein the needle is connected to the gear assembly via the central hole; and
a first DC power supply attached to the rear face of the casing and connected to the drive unit and the detecting and driving circuit.
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Accused Products
Abstract
An electronic environment sensing instrument having an analog indicator has a casing having a front panel with a scale, an electronic sensing and driving assembly mounted in the casing, a needle and a DC power supply. The electronic driving indicator assembly has a detecting and driving circuit to sense and measure an environmental parameter outside the casing and generates a control signal, a drive unit to receive the control signal and rotate a specific amount in a specific direction based on the control signal and a gear assembly connected to and driven by the drive unit. The needle is attached to and driven by the gear assembly and points to a specific value on the scale corresponding to the sensed environmental parameter.
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Citations
22 Claims
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1. An electronic environment sensing instrument having an analog indicator, comprising:
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a casing having a front panel with a front face having at least one scale with an associated indicating needle; a rear face; and a central through hole; an electronic driving indicator assembly attached to the rear face of the front panel for imparting movement to the indicating needle and having a sensor for sensing and measuring an environmental parameter outside the casing; a detecting and driving circuit for converting a sensed environmental parameter to a voltage; an electronic drive unit receiving the voltage; and a gear assembly operated by the drive unit, wherein the drive unit is connected between the gear assembly and the detecting and driving circuit;
wherein the needle is connected to the gear assembly via the central hole; anda first DC power supply attached to the rear face of the casing and connected to the drive unit and the detecting and driving circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification