33results about How to "Flexibility to increase or decrease the quantity" patented technology

The invention provides a modular combined cabinet freezer, and belongs to the field of freezing and refrigerating equipment study. The modular combined cabinet freezer comprises a host module (1), a cabinet dividing module and a connecting component. The host module (1) and the cabinet dividing module (2) of different numbers can be combined to change the size of freezing space, and different application needs are met. Compared with the prior art, the modular combined cabinet freezer has the beneficial effects that a user can flexibly increase and reduce the number of the modules according toactual space needs and function needs, the use efficiency of the cabinet freezer can be fully improved, and energy is saved.

The invention provides a method for managing access points (AP), an access controller (AC) and an access point (AP), wherein the method comprises the following steps: determining whether the activation condition or the sleep condition of AP is met or not by the AC, and informing the AP to enter a running state from a sleep state when the activation condition of the AP is met; and informing the AP to enter the sleep state from the running state when the sleep condition of the AP is met and keeping connection with the AC when the AP is in the sleep state but not providing access service for any user terminal. The invention can flexibly increase or decrease the number of the AP which provides access service as required, reduce the power consumption and avoid the energy waste.

The invention relates to a phase change heat storage device, a solar heat utilization system employing the same and an operating mode of the solar heat utilization system, and provides a heat storage device with good heat storage property and high exergy, and the heat storage device is applied to a solar heat utilization system. The heat storage device adopts a plurality of serially connected independent heat storage units to realize temperature gradient heat storage and utilizes latent heat of a heat storage medium during heat storage to improve the heat storage effect and the heat utilization ratio, is simple in structure and allows the heat storage units to be flexibly adjusted as required. According to the invention, the heat storage device is also applied to the solar heat utilization system, latent heat and sensible heat storage capability of the heat storage medium are fully utilized, the required amount of the heat storage medium is reduced, the structure is simplified and the solar exergy is improved.

The invention discloses a high-precision multi-station fiber time synchronization method, and the method comprises the steps that 1), a source end transmitting station and a tail end receiving station carry out the bidirectional time comparison; 2), receiving stations along a way regenerates synchronized time signals. The above two processes are carried out at the same time. According to the invention, the source end transmitting station and the tail end receiving station just need to carry out the continuous bidirectional time comparison, and the receiving stations along a way just receive bidirectional time comparison signals from the source end transmitting station and the tail end receiving station, regenerate the time signals synchronous with the source end transmitting station, and do not need to participate in the bidirectional time comparison. The method can achieve the same synchronization precision and reliability of multi-station fiber time synchronization and point-to-point fiber time synchronization, and the receiving stations along the way do not interfere with each other, wherein the number can change flexibly.

The present invention relates to the field of landscaping technology, in particular to a tree support device for landscaping, comprising a hoop ring and at least three brackets, the hoop rings are used to attach the brackets to tree poles to be supported, The clamp ring includes the No. 1 arc frame, the No. 2 arc frame and the No. 3 arc frame distributed in a circular array, the No. 2 arc frame and the No. 3 arc frame have the same structure, and the No. 2 arc frame includes the No. 2 arc plate , the inner arc surface of the No. 2 arc plate is fixed with the No. 2 clamping block, and the No. 1 arc frame includes the No. 1 arc plate. In the present invention, a flexible fixing method is adopted by arranging a stretchable hoop ring and more than three supporting brackets, and the tree will not be strangled as the tree grows. There are a plurality of sawtooth blocks fixedly connected with the corresponding No. 1 or No. 2 snap-in blocks, so that the operator can flexibly increase or decrease the number of supports according to needs.

The invention relates to a detection system and a detection method for the width of a blade metal reinforced side nose cone. Wherein, the detection system includes an insulation detection body, and the exterior of the insulation detection body is provided with a plurality of conductive contacts distributed along the extension direction of the insulation detection body, and the conductive contacts can be connected with a metal reinforcement edge with a qualified width. The corresponding position of the inner surface of the cone is in contact; the detection circuit, including the conductive contacts, forms a circuit loop according to the contact between the plurality of conductive contacts and the inner surface of the metal reinforced edge nose cone, and generates a detection signal in the circuit loop and output. The above detection system and detection method at least have the advantages of simple, fast and reliable detection process.

The invention relates to a laser power supply. The invention discloses a control method for driving a power supply of a high-current semiconductor laser, including a modular current output circuit, a control circuit, and an expansion interface. The modular current output circuit is used to output a large current Modularization, for different output current requirements, increase or decrease the DC-DC module on the expansion interface to obtain the required working current; the control circuit is used to control the DC-DC module according to the large current output circuit and laser working requirements The bus is controlled by output voltage, output current, output enable, slow start, slow close, and the management and control of the keyboard and LCD. Method: first initialize each control port, control the display screen and display the working interface; then enter the main loop program to scan the keyboard; and execute the corresponding key processing subroutine. The invention can flexibly expand the output stage power module, and has the characteristics of small volume, high efficiency, stability and reliability.

The invention discloses a brushless excitation black excitation circuit. The brushless excitation black excitation circuit is applied to a non-auxiliary-power remote hydropower station or a movable diesel generating set, and under the condition that no external power supplies are provided, the automatic black excitation of a brushless excitation generating set is realized. The brushless excitation black excitation circuit comprises a voltage setting unit, a power tube array unit, a power tube driving unit and an optical coupler. The voltage setting unit comprises a short-range voltage setting variable resistor and a remote voltage setting variable resistor. According to the invention, a large power power tube parallel connection technology is adopted, the working state is started and stopped at a high speed, no mechanical contacts exist, and the reliability is high; in addition, according to the magnitude of the excitation current of the generating set, the number of the power tube can be increased or decreased flexibly. The brushless excitation black excitation circuit provided by the invention has an over-current protection function. When the excitation current is detected to be larger than a setting value, a protection circuit acts immediately, the output of power tubes is stopped, and the generating set is effectively protected against an excitation over-current and over-voltage.