Standard elevator weighing device circuit

Abstract

The utility model provides a standard elevator weighing device circuit, which relates to the field of traction, hydraulic and strong drive elevator use, and comprises a power supply circuit, a switching value input circuit, a sensor analog input circuit, a 51 single chip microcomputer circuit, a nixie tube display circuit, an analog output circuit and a relay output circuit diagram, a sensor signal acquisition circuit, a base station / door area / running direction signal circuit, a programmable single-chip microcomputer circuit, an isolation type power supply circuit and a standard analog quantity signal and three-way switching value output circuit are used, and the weighing device has a self-learning function, state display, nixie tube display J1 / J2 / J3 and weighing percentage display. And three paths of electromagnetic relay switching signals and 0-5V / 0-10V / -10-10V analog quantity signals are output, so that the weighing precision and accuracy of the elevator are improved, the load error generated in the high-speed running process of the elevator is automatically corrected, and the elevator weighing is effectively realized.

Description

Technical Field

[0001] The utility model relates to the application field of traction, hydraulic and strong drive elevators, in particular to a standard elevator weighing device circuit. Background Art

[0002] The elevator weighing device is also known as the elevator bearing device: the elevator weighing device self-learning, weighing device inspection and confirmation, full load and overload learning, simulated bearing learning, the principle is: the controller is a pressure sensor that converts weight into an electrical signal and is connected 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.

[0003] The existing elevator weighing device has large errors and inaccurate elevator load. At the same time, the existing weighing device has no fuzzy compensation and floor-by-floor compensation functions during operation, which leads to its limitations. Utility Model Content

[0004] In order to overcome the existing problems, the embodiment of the present application provides a standard elevator weighing device circuit, which uses a sensor signal acquisition circuit, a base station / door area / running direction signal circuit, a programmable single-chip microcomputer circuit, an isolated power supply circuit, a standard analog signal and a 3-way switch output circuit. At the same time, the weighing device has a self-learning function and status display, a digital tube display J1 / J2 / J3 and a weighing percentage display, and outputs 3-way electromagnetic relay switch signals and 0-5V / 0-10V / -10-10V analog signals to improve the elevator weighing precision and accuracy, automatically correct the load error generated during the high-speed operation of the elevator, and effectively realize the elevator weighing.

[0005] The technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0006] A standard elevator weighing device circuit, the elevator weighing device circuit is composed of a power supply circuit, a switch input circuit, a sensor analog input circuit, a 51 single chip microcomputer circuit, a digital tube display circuit, an analog output circuit and a relay output circuit diagram;

[0007] Among them, the power supply circuit includes a rectifier bridge BZ1, an isolated power module TB, a first linear voltage regulator chip V1 and a second linear voltage regulator chip V2. The power supply circuit supplies power to the circuit. The AC / DC 24V power supply outputs DC24V through the rectifier bridge BZ1 and the filter capacitor C10, and the DC24V is input into the isolated power module TB. The isolated power module TB outputs ±12V two-way power supply to provide working power for the operational amplifier. The +12V power supply inputs the first linear voltage regulator chip V1 to output +5V power supply, and the +12V power supply inputs the second linear voltage regulator chip V2 to output +3.3V power supply, which is used to power the 51 single-chip microcomputer circuit.

[0008] Preferably, the switch input circuit is a three-way optocoupler TL4 / TL5 / TL6 that collects external control signals and inputs the collected signals into the MCU through the D11 / D12 / D13 ports.

[0009] Preferably, the sensor analog input includes a first operational amplifier device U3, and the sensor analog input is the load sensor analog signal PIN1 port input to the first operational amplifier device U3 for operational amplification processing and then input to the 51 single-chip microcomputer circuit for programmed processing via the AIN port.

[0010] Preferably, the 51 single-chip microcomputer circuit includes a 51 single-chip microcomputer U1, and the 51 single-chip microcomputer circuit is a single-chip microcomputer control part that digitally processes and controls the overall function of the circuit, burns the completed program into the MCU through the programming interface, and the MCU part performs self-learning processing on the weighing signal and the system signal.

[0011] Preferably, the analog output includes a second operational amplifier device U4, and the analog output is connected to the second operational amplifier device U4 through an A0 port to process and output a 0-10V / 0-5V / -10-10V analog voltage.

[0012] Preferably, the digital tube display circuit includes a register chip U2, and the digital tube display circuit is connected to the register chip U2 via CP / STR / DSI to display the weighing status and system functions externally.

[0013] Preferably, the relay output circuit is connected to the U5 inverter control relay through D01 / D02 / D03 to output switch signals of light load, full load and overload.

[0014] The advantages of the embodiments of the present application are:

[0015] The utility model uses a sensor signal acquisition circuit, a base station / door area / running direction signal circuit, a programmable single-chip circuit, an isolated power supply circuit, a standard analog signal and a 3-way switch output circuit. At the same time, the weighing device has a self-learning function and a status display, a digital tube display J1 / J2 / J3 and a weighing percentage display, and outputs 3-way electromagnetic relay switch signals and 0-5V / 0-10V / -10-10V analog signals, thereby improving the weighing precision and accuracy of the elevator, automatically correcting the load error generated during the high-speed operation of the elevator, and effectively realizing the weighing of the elevator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 This is the schematic diagram of the circuit design of the utility model;

[0018] Figure 2 This is the power supply circuit diagram of the utility model;

[0019] Figure 3 This is the switch quantity input circuit diagram of the utility model;

[0020] Figure 4 This is the analog input circuit diagram of the sensor of the utility model;

[0021] Figure 5 This is the circuit diagram of the 51 single-chip microcomputer of the utility model;

[0022] Figure 6 Programming and resistance exclusion circuit diagram for this utility model;

[0023] Figure 7 This is the digital tube display circuit diagram of the utility model;

[0024] Figure 8 This is the analog output circuit diagram of the utility model;

[0025] Fig. 9 This is the relay output circuit diagram of the utility model;

[0026] Fig.10 This is the circuit design structure diagram of the utility model.

[0027] Description of main reference numerals:

[0028] BZ1, rectifier bridge; TB, isolation tube module; V1, first linear voltage regulator chip; V2, second linear voltage regulator chip; U1, 51 single-chip microcomputer; U2, register chip; U3, first operational amplifier device; U4, second operational amplifier device. DETAILED DESCRIPTION

[0029] The embodiment of the present application solves the problems in the prior art by providing a standard elevator weighing device circuit, using a sensor signal acquisition circuit, a base station / door area / running direction signal circuit, a programmable single-chip microcomputer circuit, an isolated power supply circuit, a standard analog signal and a 3-way switch output circuit. At the same time, the weighing device has a self-learning function and a status display, a digital tube display J1 / J2 / J3 and a weighing percentage display, and outputs 3-way electromagnetic relay switch signals and 0-5V / 0-10V / -10-10V analog signals, thereby improving the elevator weighing precision and accuracy, automatically correcting the load error generated during the high-speed operation of the elevator, and effectively realizing the elevator weighing.

[0030] The technical solution in the embodiment of the present application is to solve the above problems, and the overall idea is as follows:

[0031] Example

[0032] This embodiment provides a standard elevator weighing device circuit, such as Figure 1-10 As shown, the elevator weighing device circuit is composed of a power supply circuit, a switch input circuit, a sensor analog input circuit, a 51 single-chip microcomputer circuit, a digital tube display circuit, an analog output circuit and a relay output circuit diagram;

[0033] The power supply circuit is DC / AC 24V, which outputs ±12V through the isolation tube module TB. The output circuit: The programmable microcontroller load is programmed and controlled, and outputs three-way switch signals and 0-5V / 0-10V / -10-10V analog.

[0034] Among them, the power supply circuit includes a rectifier bridge BZ1, an isolated electric tube module TB, a first linear voltage regulator chip V1 and a second linear voltage regulator chip V2. The power supply circuit supplies power to the circuit. The AC / DC 24V power supply outputs DC24V through the rectifier bridge BZ1 and the filter capacitor C10, and the DC24V is input into the isolated electric tube module TB. The isolated electric tube module TB outputs two ±12V power supplies to provide working power for the operational amplifier. The +12V power supply is input into the first linear voltage regulator chip V1 to output a +5V power supply, and the +12V power supply is input into the second linear voltage regulator chip V2 to output a +3.3V power supply, which is used to power the 51 single-chip microcomputer circuit.

[0035] The switch input circuit is a three-way optocoupler TL4 / TL5 / TL6 that collects external control signals and inputs them into the MCU through the D11 / D12 / D13 port.

[0036] The sensor analog input includes a first operational amplifier device U3. The sensor analog input is the load sensor analog signal PIN1 port input to the first operational amplifier device U3 for operational amplification processing and then input to the 51 single-chip microcomputer circuit for programmed processing through the AIN port.

[0037] The 51 single-chip microcomputer circuit includes a 51 single-chip microcomputer U1. The 51 single-chip microcomputer circuit is a single-chip microcomputer control part that performs digital processing and control on the overall function of the circuit. The completed program is burned into the MCU through a programming interface. The MCU part performs self-learning processing on the weighing signal and the system signal.

[0038] The analog output includes a second operational amplifier device U4, and the analog output is connected to the second operational amplifier device U4 through the A0 port to process and output a 0-10V / 0-5V / -10-10V analog voltage.

[0039] The digital tube display circuit includes a register chip U2, and the digital tube display circuit is connected to the register chip U2 through CP / STR / DSI to display the weighing status and system functions externally.

[0040] The relay output circuit is connected to the U5 inverter through D01 / D02 / D03 to control the relay to output switch signals of light load, full load and overload.

[0041] By adopting the above technical solution:

[0042] It uses sensor signal acquisition circuit, base station / door area / running direction signal circuit, programmable single chip microcomputer circuit, isolated power supply circuit and standard analog signal and 3-way switch output circuit. At the same time, the weighing device has self-learning function and status display, digital tube display J1 / J2 / J3 and weighing percentage display, and outputs 3-way electromagnetic relay switch signal, 0-5V / 0-10V / -10-10V analog signal, which improves the elevator weighing precision and accuracy, automatically corrects the load error generated during the high-speed operation of the elevator, and effectively realizes elevator weighing.

[0043] In the specific implementation process, Figure 2 As shown, the power supply circuit is a power supply DC / AC 24V that outputs ±12V through the isolated electric tube module TB. The output circuit: the programmable microcontroller load is programmed and controlled, and three-way switch signal and 0-5V / 0-10V / -10-10V analog are output. The power supply circuit includes a rectifier bridge BZ1, an isolated electric tube module TB, a first linear voltage regulator chip V1 and a second linear voltage regulator chip V2. The power supply circuit is a power supply AC / DC 24V power supply for the circuit that outputs DC24V through a rectifier bridge BZ1 and a filter capacitor C10. The DC24V is input into the isolated electric tube module TB, and the isolated electric tube module TB outputs two ±12V power supplies to provide working power for the operational amplifier. The +12V power supply is input into the first linear voltage regulator chip V1 to output a +5V power supply, and the +12V power supply is input into the second linear voltage regulator chip V2 to output a +3.3V power supply, which is used to power the 51 microcontroller circuit.

[0044] like Figure 3As shown, the switch input circuit is a three-way optocoupler TL4 / TL5 / TL6 that collects external control signals and inputs them into the MCU through the D11 / D12 / D13 port to collect signals.

[0045] like Figure 4 As shown, the sensor analog input includes a first operational amplifier device U3. The sensor analog input is the load sensor analog signal PIN1 port input to the first operational amplifier device U3 for operational amplification processing and then input to the 51 single-chip microcomputer circuit for programmed processing through the AIN port.

[0046] like Figure 5 As shown, the 51 single-chip microcomputer circuit includes a 51 single-chip microcomputer U1. The 51 single-chip microcomputer circuit is a single-chip microcomputer control part that performs digital processing and control on the overall function of the circuit, burns the completed program into the MCU through the programming interface, and the MCU part performs self-learning processing on the weighing signal and the system signal.

[0047] like Figure 8 As shown, the analog output includes a second operational amplifier device U4, and the analog output is connected to the second operational amplifier device U4 through the A0 port to process and output a 0-10V / 0-5V / -10-10V analog voltage.

[0048] like Figure 7 As shown, the digital tube display circuit includes a register chip U2, and the digital tube display circuit is connected to the register chip U2 through CP / STR / DSI to display the weighing status and system functions externally.

[0049] like Fig. 9 As shown, the relay output circuit is connected to the U5 inverter through D01 / D02 / D03 to control the relay which outputs switch signals of light load, full load and overload.

[0050] 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 standard elevator weighing device circuit, characterized in that: The elevator weighing device circuit is composed of a power supply circuit, a switch input circuit, a sensor analog input circuit, a 51 single-chip microcomputer circuit, a digital tube display circuit, an analog output circuit and a relay output circuit diagram; The power supply circuit includes a rectifier bridge (BZ1), an isolation electric tube module (TB), a first linear voltage regulator chip (V1) and a second linear voltage regulator chip (V2). The power supply circuit supplies power to the circuit. The AC / DC 24V power supply outputs DC24V through the rectifier bridge (BZ1) and the filter capacitor C10, and the DC24V is input into the isolation electric tube module (TB). The isolation electric tube module (TB) outputs two power supplies of ±12V to provide working power for the operational amplifier. The +12V power supply is input into the first linear voltage regulator chip (V1) to output a +5V power supply, and the +12V power supply is input into the second linear voltage regulator chip (V2) to output a +3.3V power supply, which is used to power the 51 single-chip microcomputer circuit.

2. A standard elevator weighing device circuit as claimed in claim 1, characterized in that: The switch input circuit is a three-way optocoupler TL4 / TL5 / TL6 that collects external control signals and inputs them into the MCU through the D11 / D12 / D13 port to collect signals.

3. A standard elevator weighing device circuit as claimed in claim 1, characterized in that: The sensor analog quantity input comprises a first operational amplifier device (U3), and the sensor analog quantity input is a load sensor analog quantity signal PIN1 port input to the first operational amplifier device (U3) for operational amplification processing and then input to the 51 single chip microcomputer circuit for programmed processing via the AIN port.

4. A standard elevator weighing device circuit as claimed in claim 1, characterized in that: The 51 single-chip microcomputer circuit includes a 51 single-chip microcomputer (U1). The 51 single-chip microcomputer circuit is a single-chip microcomputer control part that performs digital processing and control on the overall function of the circuit, burns the completed program into the MCU through the programming interface, and the MCU part performs self-learning processing on the weighing signal and the system signal.

5. A standard elevator weighing device circuit as claimed in claim 1, characterized in that: The analog output includes a second operational amplifier device (U4), and the analog output is connected to the second operational amplifier device (U4) through an A0 port to process and output a 0-10V / 0-5V / -10-10V analog voltage.

6. A standard elevator weighing device circuit as claimed in claim 1, characterized in that: The digital tube display circuit comprises a register chip (U2), and the digital tube display circuit is connected to the register chip (U2) via CP / STR / DSI to display the weighing status and system functions externally.

7. A standard elevator weighing device circuit as claimed in claim 1, characterized in that: The relay output circuit is connected to the U5 inverter control relay through D01 / D02 / D03 to output switch signals of light load, full load and overload.

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