Weighing device circuit of elevator with movable car platform

Abstract

The utility model provides a movable car platform elevator weighing device circuit, and relates to the technical field of movable car platform elevator weighing, the movable car platform elevator weighing device circuit comprises a relay assembly, a 51 single-chip microcomputer and a Hall sensing circuit, an internal circuit of the 51 single-chip microcomputer is connected with the relay assembly, and the Hall sensing circuit is connected in the relay assembly. The relay assembly comprises a first solid-state relay, a second solid-state relay and a third solid-state relay, the relay assembly and a circuit in the 51 single-chip microcomputer are connected with the same power supply PZ, the circuit in the 51 single-chip microcomputer is connected with a nixie tube function display circuit, and the nixie tube function display circuit is connected with a first nixie tube and a second nixie tube; the technical key points are as follows: programming is realized by using a 51 single chip microcomputer, linear processing is carried out on a Hall analog quantity signal of a circuit, five-way switching quantity signals of elevator weighing light load, half load, heavy load, full load and overload are output, and high-precision displacement signal measurement is favorably realized.

Description

Technical Field

[0001] The utility model relates to the technical field of movable platform elevator weighing, in particular to a movable platform elevator weighing device circuit. Background Art

[0002] An elevator is a permanent transportation device that serves several specific floors in a building and whose car runs on at least two rows of rigid tracks that are perpendicular to the horizontal plane or inclined at an angle of less than 15° to the plumb line. Modern elevators are mainly composed of traction machines (winch), guide rails, counterweight devices, safety devices (such as speed limiters, safety clamps and buffers, etc.), signal control systems, cars and hall doors, etc.

[0003] The elevator weighing device has the ability to check and confirm, learn full load and overload, and simulate load-bearing learning. The elevator weighing device converts the weight into an electrical signal through a pressure sensor and connects it to the controller via a transmission cable. The controller's summing amplifier, A / D converter, and single-chip microcomputer calculate to achieve electronic weighing. When the weight in the car reaches or exceeds 95% or 102% of the set value, the full load and overload relays in the controller will be activated respectively and connected to the elevator control system to ensure safe and reliable operation of the elevator.

[0004] However, the existing weighing devices for movable-car-bottom electric elevators have the problems of small number of output paths, inaccurate load detection, fixed detection load values, and small user adjustable range. Utility Model Content

[0005] In order to overcome the shortcomings of the existing movable floor electric elevator weighing device, such as the small number of output channels, inaccurate load detection, fixed load detection value, and small user adjustable range, the embodiment of the present application provides a movable floor elevator weighing device circuit, which is programmable by utilizing a 51 single-chip microcomputer, linearizes the circuit Hall analog signal, and outputs five switch signals of elevator weighing light load, half load, heavy load, full load, and overload, which is conducive to realizing high-precision displacement signal measurement.

[0006] The technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0007] A weighing device circuit of a movable car floor elevator comprises a relay component, a 51 single chip microcomputer and a Hall induction circuit, wherein the internal circuit of the 51 single chip microcomputer is connected with the relay component;

[0008] The Hall sensor circuit is connected inside the relay assembly to provide information support for 51 single-chip microcomputer programming;

[0009] The Hall sensing circuit detects the displacement output modulus signal, and after the 51 single chip microcomputer obtains the Hall sensing circuit analog signal, it outputs a control signal to the relay, so that the switch circuit on the relay assembly presents different circuit states.

[0010] In a possible implementation, the relay assembly includes a first solid-state relay, a second solid-state relay and a third solid-state relay, the terminals on the first solid-state relay, the second solid-state relay and the third solid-state relay are all connected to the 51 single-chip computer through wires, and the terminals on the first solid-state relay, the second solid-state relay and the third solid-state relay are interconnected through wires, and the terminals on the first solid-state relay, the second solid-state relay and the third solid-state relay, except those connected to U1 and connected to each other, are divided into weighing light load, half load, heavy load, full load and overload signal terminals.

[0011] In a possible implementation, the relay assembly and the circuit inside the 51 single-chip computer are connected to the same power supply PZ, which provides AC / DC 24V power. The rectifier bridge and filter capacitor C10 convert the power into DC24V output, and the bus-linear voltage regulator chip converts the input DC24V power into +12V power output.

[0012] In one possible implementation, the output +12V power supply is converted into a +5V power supply by a first linear voltage regulator chip and connected to a Hall sensing circuit through a wire. The output +12V power supply is converted into a +3.3V power supply by a second linear voltage regulator chip and connected to a circuit inside the 51 microcontroller through a wire.

[0013] In a possible implementation, the circuit inside the 51 single-chip microcomputer is connected to a digital tube function display circuit, and the digital tube function display circuit is connected to a first digital tube and a second digital tube, and the first digital tube and the second digital tube include five display states of L1 / L2 / L3 / L4 / LF.

[0014] In summary, the present invention includes at least one of the following beneficial technical effects:

[0015] By using 51 single-chip microcomputer to realize programmability, the circuit Hall analog signal is linearized and five switch signals of elevator weighing light load, half load, heavy load, full load and overload are output, which is conducive to the realization of high-precision displacement signal measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is one of the power supply circuit diagrams of the utility model;

[0017] Figure 2 This is the second power supply circuit diagram of the utility model;

[0018] Figure 3 This is the third power supply circuit diagram of the utility model;

[0019] Figure 4This is the Hall sensor circuit diagram of the utility model;

[0020] Figure 5 This is the circuit diagram of the single chip microcomputer of the utility model;

[0021] Figure 6 This is the digital tube display circuit diagram of the utility model;

[0022] Figure 7 This is the output relay circuit diagram of the utility model.

[0023] Description of the drawings: BZ1, rectifier bridge; V1, linear voltage regulator chip; U1, 51 single-chip microcomputer; BSL, first digital tube; DSH, second digital tube; J1, first solid-state relay; J2, second solid-state relay; J3, third solid-state relay; V1, first linear voltage regulator chip; V2, second linear voltage regulator chip. DETAILED DESCRIPTION

[0024] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0025] Embodiment 1:

[0026] This embodiment introduces a specific structure of a weighing device circuit of a movable car floor elevator. Figure 1-Figure 7 As shown, it includes a relay component, a 51 single-chip microcomputer U1 and a Hall induction circuit, the relay component includes a first solid-state relay J1, a second solid-state relay J2 and a third solid-state relay J3, the relay component and the circuit inside the 51 single-chip microcomputer U1 are connected to the same power supply PZ, the circuit inside the 51 single-chip microcomputer U1 is connected to a digital tube function display circuit, and the digital tube function display circuit is connected to a first digital tube BSL and a second digital tube DSH;

[0027] Among them, the internal circuit of the 51 single-chip microcomputer U1 is connected to the relay component, and the Hall sensing circuit is connected inside the relay component to provide information support for the programming of the 51 single-chip microcomputer U1. When the Hall sensing circuit detects the displacement output modulus signal, the 51 single-chip microcomputer U1 obtains the Hall sensing circuit analog signal and outputs a control signal to the relay, so that the switch circuit on the relay component presents the circuit states of weighing light load, half load, heavy load, full load and overload, and releases the corresponding circuit signal;

[0028] At the same time, the Hall sensor circuit detects the external magnetic field strength through the Hall sensor chip circuit, and outputs an analog 0-2.5V voltage to connect to the MCU, so that the MCU part is the single-chip control part to digitally process and control the overall function of the circuit, and the completed program is burned into the MCU through the programming interface, and the MCU part performs self-learning processing on the weighing signal and system signal;

[0029] Secondly, if Figure 7 As shown, the terminals P0.7 / P0.6 on the first solid-state relay J1, the terminals P0.4 / P03 on the second solid-state relay J2 and the terminal P0.1 on the third solid-state relay J3 are all connected to the 51 single-chip computer U1 through wires, and the terminals on the first solid-state relay J1, the second solid-state relay J2 and the third solid-state relay J3 are connected to each other through wires, and the terminals on the first solid-state relay J1, the second solid-state relay J2 and the third solid-state relay J3 except those connected to U1 and connected to each other are divided into weighing light load, half load, heavy load, full load and overload signal wiring terminals, and the switch quantity signals light load, half load, heavy load, full load and overload are given;

[0030] Secondly, if Figure 1 As shown, the power supply PZ provides AC / DC 24V power supply, and the rectifier bridge BZ1 and the filter capacitor C10 convert the power supply into DC24V output, and the bus linear voltage regulator chip converts the input DC24V power supply into +12V power output to meet the DC power demand of the weighing device;

[0031] At the same time, if Figure 2 As shown, the output +12V power supply is converted into +5V power supply by the linear voltage regulator chip V1, and connected to the Hall sensor circuit through a wire, so as to provide working power supply for the weighing device op amp, such as Figure 3 As shown, the output +12V power is converted into +3.3V power by the second linear voltage regulator chip V2, and connected to the circuit inside the 51 single-chip microcomputer U1 through a wire, so as to provide power for the 51 single-chip microcomputer U1 to work;

[0032] Further, such as Figure 6 As shown, the first digital tube BSL and the second digital tube DSH include five display states of L1 / L2 / L3 / L4 / LF, and the digital tube function button display part is connected to the digital tube weighing state and system function through D01 / P0.2, and is displayed externally;

[0033] In some examples, the manually set displacement range of the lower-activity elevator is 2.5 to 9.9 mm, while the automatic detection range is between 2.20 mm ≤ car bottom displacement range ≤ 10.00 mm.

[0034] By adopting the above technical solution:

[0035] The above design uses the power supply part PZ to provide AC / DC 24V power for the circuit. When the rectifier bridge BZ1 and the filter capacitor C10 convert the power supply to output DC24V power, the bus linear voltage regulator chip converts the input DC24V power supply into +12V power output to provide working power for the operational amplifier. V1 converts the input +12V power supply into +5V power supply and outputs it. The second linear voltage regulator chip V2 converts the input +12V power supply into +3.3V power supply and outputs it. It can provide working power for the weighing device operational amplifier and provide power for the single-chip microcomputer U1.

[0036] During the operation of the weighing device, the Hall sensing circuit detects the displacement output modulus signal, transmits the analog signal to the 51 single-chip microcomputer U1, and outputs the control signal to the relay, so that the switch circuit on the relay component presents circuit signals for weighing light load, half load, heavy load, full load and overload. It has many paths and a subdivided load detection range, which improves the detection accuracy and is suitable for all movable car-bottom elevators.

[0037] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A weighing device circuit for a movable floor elevator, the circuit being arranged inside the weighing device, characterized in that: include: Relay components; 51 single chip microcomputer (U1), whose internal circuit is connected with the relay assembly; as well as The Hall sensor circuit is connected inside the relay assembly to provide information support for programming the 51 single-chip microcomputer (U1) The Hall sensing circuit detects the displacement output modulus signal, and after the 51 single chip microcomputer (U1) obtains the Hall sensing circuit analog signal, it outputs a control signal to the relay, so that the switch circuit on the relay component presents different circuit states.

2. A weighing device circuit for a movable floor elevator as claimed in claim 1, characterized in that: The relay assembly comprises a first solid-state relay (J1), a second solid-state relay (J2) and a third solid-state relay (J3); the terminals on the first solid-state relay (J1), the second solid-state relay (J2) and the third solid-state relay (J3) are all connected to a 51 single-chip computer (U1) through wires, and the terminals on the first solid-state relay (J1), the second solid-state relay (J2) and the third solid-state relay (J3) are interconnected through wires, and the terminals on the first solid-state relay (J1), the second solid-state relay (J2) and the third solid-state relay (J3), except those connected to U1 and those connected to each other, are divided into weighing light load, half load, heavy load, full load and overload signal connection terminals.

3. A weighing device circuit for a movable floor elevator as claimed in claim 1, characterized in that: The relay assembly and the circuit inside the 51 single-chip computer (U1) are connected to the same power supply PZ, which provides AC / DC 24V power. The rectifier bridge (BZ1) and the filter capacitor C10 convert the power into DC24V output, and the bus-line voltage regulator chip converts the input DC24V power into +12V power output.

4. A weighing device circuit for a movable floor elevator as claimed in claim 3, characterized in that: The output +12V power is converted into a +5V power supply through a first linear voltage regulator chip (V1), and is connected to a Hall sensing circuit through a wire. The output +12V power is converted into a +3.3V power supply through a second linear voltage regulator chip (V2), and is connected to a circuit inside a 51 single-chip computer (U1) through a wire.

5. A weighing device circuit for a movable floor elevator as claimed in claim 1, characterized in that: The circuit inside the 51 single chip microcomputer (U1) is connected to a digital tube function display circuit, and the digital tube function display circuit is connected to a first digital tube (BSL) and a second digital tube (DSH), and the first digital tube (BSL) and the second digital tube (DSH) include five display states of L1 / L2 / L3 / L4 / LF.

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