Sensors, multiplexed communication techniques, and related systems
First Claim
1. A control system, comprising:
- a sensor, coupled to a fan header, configured to observe an operational parameter, and responsive thereto, to simulate an output signal of a tachometer, the simulated output signal being indicative of a rotational speed parameter, wherein the sensor is further configured to emit, over a communication channel, the simulated output signal as a proxy for the observed operational parameter, wherein the observed operational parameter is different from the rotational speed parameter; and
a controller to receive the simulated signal over the communication channel and to interpret the simulated signal as corresponding to a state of the observed operational parameter.
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Accused Products
Abstract
An observed operational state can include an operational state of one or more system devices. A sensor can emit, in response to a detected observable condition reflective of a given operational state, a simulated signal reflective of a different operational state as a proxy for the detected condition. A controller receiving such a proxy signal can, at least partially responsively to the proxy signal, issue a command corresponding to the given operational state. For example, a leak detector can emit in response to a detected leak, or a flow-rate sensor can emit in response to a detected flow-rate of a liquid, a simulated fan-speed tachometer signal representative of a selected fan speed. At least partially in response to observing a simulated tachometer signal, a controller can issue a system command corresponding to an underlying system condition for which the simulated tachometer signal is a proxy.
269 Citations
48 Claims
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1. A control system, comprising:
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a sensor, coupled to a fan header, configured to observe an operational parameter, and responsive thereto, to simulate an output signal of a tachometer, the simulated output signal being indicative of a rotational speed parameter, wherein the sensor is further configured to emit, over a communication channel, the simulated output signal as a proxy for the observed operational parameter, wherein the observed operational parameter is different from the rotational speed parameter; and a controller to receive the simulated signal over the communication channel and to interpret the simulated signal as corresponding to a state of the observed operational parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of detecting a leak of a working fluid from a liquid-based heat-transfer system, the method comprising:
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sensing a presence or an absence of a working fluid externally of a liquid-based heat-transfer system with a sensor coupled to a fan header; simulating an output signal of a tachometer, the simulated output signal simulating a tachometer signal indicative of a selected rotational speed in correspondence with the sensed absence or the sensed presence of the working fluid; monitoring the simulated output signal; and interpreting a presence or an absence of the working fluid externally of the liquid-based heat-transfer system from the selected rotation speed of the simulated output signal. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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32. A computer system, comprising:
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a fluid conduit configured to convey a liquid there-through; a sensor configured to detect a presence of the liquid externally of the conduit; an electrical circuit operatively coupled to the sensor and being configured to emit a signal responsive to a detected presence of the liquid externally of the conduit, wherein the electrical circuit is further configured to simulate an output signal of a tachometer, the simulated output signal being indicative of a rotational speed parameter, and to emit the simulated output signal indicative of a selected rotation speed absent a detected presence of the liquid externally of the conduit; a control circuit to interpret, from the selected rotation speed, a presence or an absence of the liquid externally of the conduit; and a fan header and a pump electrically coupled to the header, wherein the electrical circuit is configured to interrupt at least one electrical coupling between the pump and the header in response to a detected presence of the liquid externally of the conduit. - View Dependent Claims (33, 34, 35, 36)
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37. A control system, comprising:
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a sensor configured to observe an operational parameter, and responsive thereto, to simulate an output signal of a tachometer, the simulated output signal being indicative of a rotational speed parameter, wherein the sensor is further configured to emit, over a communication channel, the simulated output signal as a proxy for the observed operational parameter, wherein the observed operational parameter is different from the rotational speed parameter; and a controller to receive the simulated signal over the communication channel, to interpret the simulated signal as corresponding to a state of the observed operational parameter, and to interrupt at least one electrical coupling between a pump and a fan header responsive to a predefined state of the observed operational parameter. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48)
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Specification