摘要:
A pressure and liquid level sensing system for a tank container or tank vehicle comprising a vessel for containing a liquid substance, such as Liquified Natural Gas (LNG), etc. The pressure and liquid level sensing system comprises a pressure sensor for measuring a gas pressure inside the vessel and a liquid level sensor for measuring a liquid level inside the vessel, the pressure sensor and the liquid level sensor comprises a first and a second pressure sensitive elements and a first and a second printed circuit boards respectively. A circuit on the first printed circuit board converts a pressure signal into an electric signal, a circuit on the second printed circuit board converts pressure signals of a gas-phase space and a liquid-phase space into electric signals of 4-20 mA or 0-10V standard. In this way, the pressure and the liquid level can be accurately measured. Furthermore, the measured values are digitalized, such that both driver and remote control center can know variation conditions of the pressure and the liquid level of the transported medium in real time, thereby transportation safety is improved.
摘要:
Power transmitting unit (PTU) usable with a wireless power transfer system to supply power and maintain a control signaling link to a local power receiving unit (PRU). A cross-connection circumstance between the PTU and a remote PRU is determined, where a control signaling link between the PTU and the remote PRU is established in an absence of power transmission to the remote PRU from the PTU. In response to the cross-connection circumstance, the control signaling link with the remote PRU is terminated while the supply of power and the control signaling link with the local PRU is maintained. In a related embodiment, a wrong-placement characteristic where power is transferred to a rogue local PRU in an absence of a control signaling link with that PRU, is detected. In response, the supply of power is maintained for at least a waiting period.
摘要:
Embodiments of a method and an apparatus for improving the performance of coexisting wireless radio signals are described. In one embodiment, the method includes detecting burst-type interference based on a packet error rate and a transmission rate associated with a transmitter. The method further includes setting the transmission rate in accordance with a burst-type rate-adaptation mode to increase data throughput.
摘要:
A novel material used for a bearing ring and a production process thereof is directed to a bimetallic composite pipe and a production process thereof. The aim of the disclosure is to provide a novel material used for a bearing ring and a production process thereof, in which high hardness, high wear resistance and high toughness, high impact toughness are interacted. The novel material used for a bearing ring according to the invention is composed of an annual clad layer and a base layer. The clad layer and the base layer is metallurgy bonded together in radial direction of a ring. The clad layer is made of bearing steel material, and the base layer is made of the material selected from bearing steel, straight carbon steel, high strength low/medium alloy steel or stainless steel.
摘要:
Techniques are described that can be used to perform one or more of the following actions in order to reduce signal interference between WLAN and BlueTooth radios that are proximate to one another. One action is to selectively reduce a filter bandwidth in a WLAN radio applied to a received WLAN radio signal to reduce BlueTooth signal interference. An additional or alternative action is to selectively indicate a WLAN radio channel bandwidth larger than a channel bandwidth used for the WLAN radio so that the BlueTooth radio avoids transmitting over the indicated channel bandwidth. An additional or alternative action is to selectively reduce BlueTooth transmitter power in response to antenna isolation between BT and WLAN radio being less than a first threshold in order to reduce the likelihood of WLAN radio front end saturation.
摘要:
Embodiments of a method and an apparatus for improving the performance of coexisting wireless radio signals are described. In one embodiment, the method includes detecting burst-type interference based on a packet error rate and a transmission rate associated with a transmitter. The method further includes setting the transmission rate in accordance with a burst-type rate adaptation mode to increase data throughput.
摘要:
A mower is provided and includes: a case; a charging circuit provided in the case, and a combination of a wheel assembly and a charging interface assembly arranged on the case. The combination is electrically connected to the charging circuit. The combination includes: a wheel assembly; and a charging interface assembly electrically connected to the charging circuit. The wheel assembly and the charging interface assembly are integrated molding structure.
摘要:
A method, apparatus and system for medium access control is provided. Time slots configured to include mini slots at the beginnings thereof. Devices are assigned time slot, mini slot combinations as transmission opportunities. A device can attempt to use a transmission opportunity when it has a packet to send, by beginning data transmission in its assigned slot and mini slot and potentially continuing the transmission up until the end of the assigned slot. If another device is already transmitting in the assigned slot, the device refrains from using its transmission opportunity. Higher priority devices can be assigned transmission opportunities corresponding to earlier mini slots within a slot. In some embodiments, multiple devices can be assigned the same transmission opportunity and a collision detection mechanism can be employed. In some embodiments, all devices detect if a slot is idle and advance the beginning of the next slot upon such detection.
摘要:
The disclosure provides a method for frequency reuse in a wireless relay scenario, wherein a center frequency spectrum, an edge frequency spectrum and a random access frequency spectrum are pre-allocated to a cell according to a scenario parameter in the cell; load conditions of all mobile stations (MSs) covered by each relay station (RS) in the cell is calculated and reported to a base station (BS); the BS allocates the random access frequency spectrum to an RS according to load conditions of all RSs and schedules MSs. The disclosure also provides a system for frequency reuse in a wireless relay scenario. With the method and system above, the frequency spectrum planning is configurable, the random access frequency spectrum is introduced, and both the load balancing and user fairness are taken into consideration, which improves the throughput at the edge of the cell, especially can increase the throughput for the users whose throughput ranks poorly.
摘要:
A garment fabric comprises a fabric support (11) for defining the shape of a garment and having a surface to at least a part of which there is secured a therapeutic fabric layer (14) by means of a flexible adhesive which comprises a herb ingredient, said flexible adhesive at least partially penetrating into each of the fabric support and the therapeutic fabric layer to provide chemical adhesion and a mechanical interlock between said layers. For forming the garment fabric the fabric support and the therapeutic fabric layer each have a layer (15, 16) of adhesive applied thereto prior to bringing the two layers of fabric into contact with one another, with the adhesive material sandwiched therebetween.