The invention relates to a control method and system for elevator parking and door opening, which relates to the technical field of elevator safe operation control.

After the elevator car is controlled to stand still and the elevator brake is started, the power of the elevator motor is gradually reduced by controlling the elevator motor, and the working state of the elevator motor and the opening and closing state of the elevator car door are controlled according to the monitored offset value of the elevator car, so that the protection of the elevator slide can be realized by using the conventional control of the elevator motor, At the same time, the efficiency and safety factor of elevator parking and door opening are greatly improved.

According to the estimated value NP of the pole pairs of the permanent magnet synchronous motor and the initial position of the rotor, the permanent magnet synchronous motor is given a set of preset vector angle voltage, and the rotor is rotated NP times to obtain the termination position of the rotor, and then the relationship between the estimated value NP of the pole pairs and the actual value is judged according to the initial position and termination position of the rotor.

Through the proportional conversion circuit, the input analog input signal is reduced to a non negative voltage signal in proportion, and then the polarity judgment circuit is used to judge the polarity of the input analog signal.

On the one hand, there is no need to provide negative power supply in the analog signal detection circuit. On the other hand, the analog input signal is reduced in proportion, which reduces the production cost of the analog signal detection circuit and improves its detection accuracy.

The voltage acquisition circuit collects the current voltage of the battery, and the current acquisition circuit collects the current charging current of the battery; The charging control module determines the required output voltage of the switching power supply according to the current voltage and current charging current of the battery, and adjusts the feedback signal received by the switching power supply according to the required output voltage of the switching power supply to make the switching power supply output the required output voltage; The switching power supply is used for charging the battery.

The utility model relates to an emergency power supply product and a battery installation structure, which comprises a battery tray, a battery cover plate and a movable baffle plate.

The battery tray has at least one placement position for placing the battery. The battery cover plate is arranged above the battery tray, there is an installation gap between the battery cover plate and the battery tray, the installation gap is provided with a taking and placing side, and the battery cover plate is used to contact the top of the battery. The battery tray and the battery cover plate are provided with a fixed baffle, which surrounds the side of the installation gap except the taking and placing side. The movable baffle is detachably arranged on the battery tray or battery cover plate to prevent the battery from being embedded and separated from the installation gap from the taking and placing side of the installation gap.

Including position sensor, controllable switch, indicator and emergency power supply. The indicator and position sensor are connected with the emergency power supply through wires; The controllable switch is arranged on the circuit between the emergency power supply and the indicator to control the conduction and disconnection of the circuit between the indicator and the emergency power supply.

The position sensor is arranged on the elevator car and connected with the control end of the controllable switch. The controllable switch is opened or closed under the trigger of the position signal, so as to control the state change of the indicator to output indication information. When the elevator reaches the leveling floor, the staff will observe the obvious change of the state of the indicator, which can achieve accurate and rapid rescue.

The utility model relates to an interface adapter board of an elevator control cabinet, which comprises a PCB board, an accompanying cable plug-in group, a hoistway cable plug-in group and a machine room cable plug-in group. The accompanying cable plug-in group, a hoistway cable plug-in group and a machine room cable plug-in group are integrated on the PCB board.

Since the traveling cable plug-in group, hoistway cable plug-in group and machine room cable plug-in group are integrated on the PCB board, they are connected through the internal wiring of the PCB board, which reduces external interference and is not easy to be damaged. In addition, the PCB board can be mechanized production, saves assembly time and is not easy to make mistakes, and greatly improves the production efficiency.

The utility model relates to a safety circuit short circuit device for elevator detection, which comprises a short circuit switch circuit, a first short circuit terminal block and a second short circuit terminal block.

The short-circuit terminal of the first short-circuit terminal block is used to output the elevator safety circuit detection signal input by the short-circuit switch circuit to the safety switch to be detected through the short-circuit terminal of the corresponding second short-circuit terminal block, and then output by the signal output end of the first short-circuit terminal block to form a safety circuit detection path. Because the safety switch of the safety circuit is short circuited by means of short circuiting the terminal and unplugging the terminal plug-in during the detection of the safety circuit, the detection of the safety circuit is safer and more convenient.

The appearance design product is used to place elevator control components, and the design key point lies in the shape. The picture or photo that can best show the main points of the design: stereogram.