摘要:
Temperature measurement data obtained by measuring the temperature of a cable clamp (31) by a temperature sensor (320) is radio-transmitted from a temperature sensing unit (32) at a predetermined timing, and the radio-transmitted temperature measurement data is received by a receiving station (5), classified by the temperature sensing unit number, and stored in a temperature measurement data storage area (502A). The temperature measurement data transmitted from twelve temperature sensing units (32) can be received by one receiving station (5).
摘要:
Apparatus for data communication includes a transmitter, which is adapted to generate a sequence of symbols at a variable symbol rate, responsively to a stream of digital data, and to convert the sequence to an analog data signal for transmission over a communication medium. A receiver includes an analog/digital converter (ADC), which is adapted to receive and digitize the data signal at a variable sampling rate so as to generate a sequence of digital samples, and digital processing circuitry, which is coupled to process the digital samples so as to extract the stream of digital data therefrom. The transmitter and the receiver are adapted to negotiate over the communication medium so as to set the sampling rate of the ADC and to determine the symbol rate responsively to the sampling rate.
摘要:
A temperature tag and system for sensing and reporting an internal temperature reading inside a container. The temperature tag mounts on an outside surface of the container, and a shaft with a temperature sensor extends through the side of the container and senses the internal temperature reading. A plurality of readings may be recorded at a predefined sampling rate and stored in a data memory. The temperature tag then sends the temperature readings to a reader device that presents the temperature readings to a user. The reader device may trigger the temperature tag to send the temperature readings with a signal such as an infrared (IR) signal, a radio frequency (RF) signal, and the like. The temperature readings may be analyzed in the temperature tag, the reader device, or may be downloaded to a computer to determine if an alarm condition exists.
摘要:
A hand-held radio frequency transmitter for use in generating a coded radio frequency transmission has a switched mode power supply energizable by a battery. A radio frequency oscillator is driven by the switched mode supply. A modulator controls operation of the oscillator which produces a coded radio frequency signal.
摘要:
This invention provides a remote monitoring system for air conditioners installed respectively in a plurality of buildings for concentrically monitoring the operating state of the air conditioners from a distance. The system comprises data collectors 3 installed in the respective buildings, and a remote monitor 4 connected to the data collectors 3 of all the buildings via a communication network. Each of the data collectors 3 collects state data representing the operating state of the air conditioner installed in each building and transmits the collected state data to the remote monitor 4. The remote monitor 4 receives the state data collected by each data collector 3, diagnoses the operating state of the air conditioner installed in each building based on the received state data, and outputs the result of diagnosis. In this way, the air conditioners can be optimally adjusted within a short period of time.
摘要:
A metering arrangement includes a meter housing, a source of energy signals, a source of gas flow signals, a source of temperature signals, and a processing circuit. The meter housing is securedly supported proximal to a facility receiving utility commodities. The processing circuit is disposed within the meter housing, and is operably connected to the source of energy signals, the source of gas flow signals, and the source of temperature signals. The processing circuit is operable to generate electrical energy consumption metering information from the energy signals. The processing circuit is further operable to generate corrected gas consumption information based on the received gas flow signals and the received temperature signals.
摘要:
In one general aspect, data transfer between the modem and a processor connected to the modem may be improved using a variable speed buffer. The variable speed buffer may include one or more first-in/first out buffers (FIFOs) and two interfaces. The FIFOs may be connected between the interfaces to form an input data path and an output data path. Each FIFO may store a complete message. Consequently, an entire message may be transferred from the processor at the processor's higher data rate without having to wait for a modulator to modulate the outgoing message at a slower data rate. The modem automatically may use characteristics of an incoming signal to detect which communications protocol is used to send a message, and perform protocol specific functions. The modem may perform system diagnostic functions to improve system performance.
摘要:
A sensor device and method of employment is provided. More specifically, a sensor device adapted to detect, identify and/or measure a chemical and/or physical characteristic upon placement of the device into an environment, especially a liquid medium for which monitoring is sought is provided.
摘要:
Disclosed is a method and apparatus for configuring an external device so that may communicate with and an implantable medical device in accordance with a desired telemetry protocols. The external device utilizes a configurable telemetry module that comprises a protocol driver that interacts with a transmit driver and a receive driver, both of which can be configured to process a telemetry signal in accordance with the necessary telemetry protocol for communicating with the implantable medical device. Once the transmit and receive drivers are configured, the telemetry module and its associated external device, e.g., a physician programmer, are enabled to communicate with the implantable medical device.
摘要:
In a system for the exchange of data, including a teleservice terminal apparatus, a user apparatus adapted to exchange data with the teleservice terminal apparatus, a central control unit having access to a public communication network, and a subcontrol unit connectable to the teleservice terminal apparatus and to the central control unit, the teleservice terminal apparatus transmits data of a particular event to the subcontrol unit which includes a first table for a first evaluation of the data and, depending on the result, transmits the data to the central control unit for a second evaluation on the basis of a second table before transmission to a certain user apparatus.