Acquisition system of management and control platform

Abstract

The utility model relates to the technical field of production monitoring, and provides an acquisition system of a management and control platform, which comprises a control unit, an acquisition unit, a power supply unit, a wireless transmitting unit and a wireless receiving unit, the power supply unit comprises a state detection circuit, an oscillator circuit, a piezoelectric element, a rectifier, a Buck-Boost circuit, an energy storage element and a voltage stabilizing circuit, the piezoelectric element, the rectifier, the Buck-Boost circuit, the energy storage element and the voltage stabilizing circuit are sequentially connected, the input end of the state detection circuit is connected with the output end of the rectifier, the output end of the state detection circuit controls the oscillator circuit, the output end of the oscillator circuit controls the Buck-Boost circuit, and the output end of the energy storage element controls the voltage stabilizing circuit. The piezoelectric element is arranged on production equipment, and the voltage stabilizing circuit is used for converting output of the energy storage element into voltage power sources of various specifications. According to the technical scheme, the technical problem that various restrictions exist in the power supply mode of an acquisition system in management and control of production equipment in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of production monitoring, and specifically, to a collection system for a control platform. Background Art

[0002] With the rapid development of industrial automation and information technology, the demand for real-time monitoring and management of the operating status of production equipment is increasing day by day. Traditional monitoring methods often rely on wired connections, which not only limit the flexibility and coverage of the monitoring system, but also increase the complexity of wiring and maintenance. To overcome these limitations, wireless collection systems have gradually become a research hotspot in the field of industrial monitoring.

[0003] In existing wireless collection systems, traditional power supply methods are often adopted, such as mains power supply or battery power supply. These power supply methods have many deficiencies. For example, mains power supply is limited by the coverage of the power grid, while battery power supply has problems such as limited capacity and the need for regular replacement or charging. In addition, for production equipment, if its own vibration energy can be used for power supply, it can not only reduce the dependence on external power sources, but also improve the overall energy efficiency of the system. Summary of the Utility Model

[0004] The utility model provides a collection system for a control platform, which solves the technical problem that there are various limitations in the power supply method of the collection system in the control of production equipment in the prior art.

[0005] The technical solution of the utility model is as follows:

[0006] A collection system for a control platform includes a control unit, a collection unit, a power supply unit, a wireless transmission unit and a wireless reception unit. The wireless transmission unit is connected to the control unit, the wireless reception unit is connected to the control platform, the collection unit is connected to the control unit, and the power supply unit supplies power to the collection system.

[0007] The power supply unit includes a state detection circuit, an oscillator circuit, and a piezoelectric element, a rectifier, a Buck-Boost circuit, an energy storage element, and a voltage stabilization circuit that are connected in sequence. The input end of the state detection circuit is connected to the output end of the rectifier, the output end of the state detection circuit controls the oscillator circuit, the output end of the oscillator circuit controls the Buck-Boost circuit. The piezoelectric element is arranged on the production equipment, and the voltage stabilization circuit is used to convert the output of the energy storage element into voltage power supplies of various specifications.

[0008] Further, the Buck - Boost circuit includes a capacitor C1, a MOS transistor Q1, an inductor L1, and a zener diode D2. The capacitor C1 is connected in parallel with the output terminal of the rectifier. The gate of the MOS transistor Q1 is connected to the oscillator circuit. The drain of the MOS transistor Q1 is connected to the positive output terminal of the rectifier. The source of the MOS transistor Q1 is connected to the first end of the inductor L1. The second end of the inductor L1 is connected to the negative output terminal of the rectifier. The first end of the inductor L1 is connected to the positive pole of the energy storage element. The second end of the inductor L1 is connected to the negative pole of the energy storage element through the zener diode D2.

[0009] Further, the state detection circuit includes an operational amplifier U5, a resistor R6, a resistor R7, a resistor R8, and a resistor R9. The resistor R6 and the resistor R7 are connected in series between the positive output terminal of the rectifier and the power ground. The connection point of the resistor R6 and the resistor R7 is connected to the non - inverting input terminal of the operational amplifier U5. The inverting input terminal of the operational amplifier U5 is connected to the negative output terminal of the rectifier through the resistor R8. The inverting input terminal of the operational amplifier U5 is connected to the output terminal of the operational amplifier U5 through the resistor R9. The output terminal of the operational amplifier U5 is connected to the oscillator circuit.

[0010] Further, the oscillator circuit includes an operational amplifier U3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a zener diode D4, a thyristor Q3, and an inverter U4. The resistor R1, the resistor R2, and the zener diode D4 are connected in series between a 5V voltage source and the power ground. The controlled terminal of the zener diode D4 is connected to the state detection circuit. The connection point of the resistor R1 and the resistor R2 is connected to the non - inverting input terminal of the operational amplifier U3. The non - inverting input terminal of the operational amplifier U3 is connected to the output terminal of the operational amplifier U3 through the resistor R3. The inverting input terminal of the operational amplifier U3 is connected to the output terminal of the operational amplifier U3 after being connected in series with the zener diode D4 and the resistor R4. The inverting input terminal of the operational amplifier U3 is also connected to the output terminal of the operational amplifier U3 through the resistor R5. The output terminal of the operational amplifier U3 is connected to the input terminal of the inverter U4. The output terminal of the inverter U4 is connected to the gate of the MOS transistor Q1.

[0011] Further, the voltage regulation circuit includes a voltage regulator U1 and a voltage regulator U2. The input terminal of the voltage regulator U1 is connected to the positive pole of the energy storage element. The output terminal of the voltage regulator U1 outputs a 5V voltage source. The input terminal of the voltage regulator U2 is connected to the positive pole of the energy storage element. The output terminal of the voltage regulator U2 outputs a 12V voltage source.

[0012] The working principle and beneficial effects of the present utility model are as follows:

[0013] In this utility model, the acquisition unit collects various parameters of the production status, and the control unit sends the collected data to the management and control platform through the wireless sending unit and the wireless receiving unit, and the management and control platform processes and gives early warnings for the collected data. The power supply unit is based on the form of piezoelectric energy harvesting. Utilizing the characteristics of the production equipment, when the production equipment is actually operating, the mechanical energy generated by the vibration of parts such as the engine in the equipment is converted into electrical energy through piezoelectric elements, and the electrical energy is processed and stored through the subsequent connected rectifier, Buck - Boost circuit, and energy storage element. Finally, a 5V and 12V voltage power supply is output through the voltage stabilizing circuit to supply power to the acquisition system. In order to avoid the problem that the power supply unit is still in the state of collecting electrical energy and consuming energy when the energy of the production equipment is low, the voltage output by the rectifier is detected through the state detection circuit. When it reaches a certain threshold, the oscillator circuit is controlled to work, and a switching signal with a certain frequency is provided for the Buck - Boost circuit, so that the power supply unit enters the state of collecting electrical energy.

[0014] The following further elaborates on this utility model in detail in conjunction with the drawings and specific embodiments. Description of the Drawings

[0015] Figure 1 It is the structural block diagram of the acquisition system in this utility model;

[0016] Figure 2 It is the circuit schematic diagram of the power supply unit in this utility model;

[0017] Figure 3 It is the circuit diagram of the state detection circuit in this utility model;

[0018] Figure 4 It is the circuit diagram of the oscillator circuit in this utility model;

[0019] Figure 5 It is the circuit diagram of the voltage stabilizing circuit in this utility model. Specific Embodiments

[0020] The following will clearly and completely describe the technical solutions in the embodiments of this utility model in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, rather than all the embodiments. Based on the embodiments in this utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope protected by this utility model. Embodiment

[0021] As Figure 1As shown in the figure, this embodiment proposes a collection system for a control platform, which includes a control unit, a collection unit, a power supply unit, a wireless transmission unit, and a wireless reception unit. The wireless transmission unit is connected to the control unit, the wireless reception unit is connected to the control platform, the collection unit is connected to the control unit, and the power supply unit supplies power to the collection system.

[0022] The power supply unit includes a status detection circuit, an oscillator circuit, and a piezoelectric element, a rectifier, a Buck-Boost circuit, an energy storage element, and a voltage stabilization circuit connected in sequence. The input end of the status detection circuit is connected to the output end of the rectifier, the output end of the status detection circuit controls the oscillator circuit, the output end of the oscillator circuit controls the Buck-Boost circuit, the piezoelectric element is arranged on the production equipment, and the voltage stabilization circuit is used to convert the output of the energy storage element into voltage power supplies of multiple specifications.

[0023] In this embodiment, the collection unit collects various parameters of the production status, and the control unit sends the collected data to the control platform through the wireless transmission unit and the wireless reception unit, and the control platform processes and warns the collected data. The power supply unit is based on the form of piezoelectric energy harvesting, and uses the characteristics of the production equipment. When the production equipment is actually working, the mechanical energy generated by the vibration of parts such as the engine in the equipment is converted into electrical energy through the piezoelectric element, and the electrical energy is processed and stored through the subsequent connected rectifier, Buck-Boost circuit, and energy storage element, and finally 5V and 12V voltage power supplies are output through the voltage stabilization circuit to supply power to the collection system. In order to avoid the problem that the power supply unit is still in the state of collecting electrical energy when the energy of the production equipment is low and consumes energy, the voltage output by the rectifier is detected through the status detection circuit. When it reaches a certain threshold, the oscillator circuit is controlled to work, and a switching signal with a certain frequency is provided for the Buck-Boost circuit to make the power supply unit enter the state of collecting electrical energy.

[0024] Further, as Figure 2 shown, the Buck-Boost circuit includes a capacitor C1, a MOS transistor Q1, an inductor L1, and a zener diode D2. The capacitor C1 is connected in parallel with the output end of the rectifier. The gate of the MOS transistor Q1 is connected to the oscillator circuit. The drain of the MOS transistor Q1 is connected to the positive output end of the rectifier. The source of the MOS transistor Q1 is connected to the first end of the inductor L1. The second end of the inductor L1 is connected to the negative output end of the rectifier. The first end of the inductor L1 is connected to the positive pole of the energy storage element. The second end of the inductor L1 is connected to the negative pole of the energy storage element through the zener diode D2.

[0025] In this embodiment, a Buck - Boost circuit is used to implement the function of DC - DC conversion, enabling input - output impedance matching and achieving maximum power output. When the MOS transistor Q1 is turned on, the direct current output by the rectifier charges the inductor L1. When the MOS transistor Q1 is turned off, the inductor L1 charges the energy - storage element. The energy - storage element uses a battery.

[0026] Furthermore, as Figure 3 shown, the state - detection circuit includes an operational amplifier U5, resistors R6, R7, R8, and R9. Resistors R6 and R7 are connected in series between the positive output terminal of the rectifier and the power - supply ground. The connection point of resistors R6 and R7 is connected to the non - inverting input terminal of the operational amplifier U5. The inverting input terminal of the operational amplifier U5 is connected to the negative output terminal of the rectifier through resistor R8, and the inverting input terminal of the operational amplifier U5 is connected to the output terminal of the operational amplifier U5 through resistor R9. The output terminal of the operational amplifier U5 is connected to the oscillator circuit.

[0027] In this embodiment, the operational amplifier U5, resistors R6, R7, R8, and R9 form a differential amplifier. When the production equipment causes the piezoelectric element PZT to convert mechanical energy into electrical energy, the rectifier starts to work and charges the capacitor C1. The voltage across C1 gradually increases. The state - detection circuit detects the output voltage of the rectifier, that is, the voltage signal across the capacitor C1, amplifies it, and outputs it to control the switch of the oscillator circuit.

[0028] Furthermore, as Figure 4 shown, the oscillator circuit includes an operational amplifier U3, resistors R1, R2, R3, R4, R5, a zener diode D4, a thyristor Q3, and an inverter U4. Resistors R1, R2, and the zener diode D4 are connected in series between the 5V voltage source and the power - supply ground. The controlled terminal of the zener diode D4 is connected to the state - detection circuit. The connection point of resistors R1 and R2 is connected to the non - inverting input terminal of the operational amplifier U3. The non - inverting input terminal of the operational amplifier U3 is connected to the output terminal of the operational amplifier U3 through resistor R3. The inverting input terminal of the operational amplifier U3 is connected to the output terminal of the operational amplifier U3 after being connected in series with the zener diode D4 and resistor R4 in sequence. The inverting input terminal of the operational amplifier U3 is also connected to the output terminal of the operational amplifier U3 through resistor R5. The output terminal of the operational amplifier U3 is connected to the input terminal of the inverter U4. The output terminal of the inverter U4 is connected to the gate of the MOS transistor Q1.

[0029] When the energy of the production equipment meets the requirements, the signal output by the state - detection circuit drives the thyristor Q3 to conduct, enabling the oscillator circuit to start working and output a signal to the MOS transistor Q1. The Buck - Boost circuit enters the normal working state and starts to supply power to the energy - storage element. Conversely, when the energy of the production equipment is too small, the signal output by the state - detection circuit is not sufficient to drive the thyristor Q3. The oscillator circuit is in a stopped working state, and the Buck - Boost circuit enters the sleep mode, reducing power consumption.

[0030] Furthermore, as Figure 5 shown, the voltage stabilizing circuit includes a voltage regulator U1 and a voltage regulator U2. The input terminal of the voltage regulator U1 is connected to the positive pole of the energy storage element, the output terminal of the voltage regulator U1 outputs a 5V voltage source, the input terminal of the voltage regulator U2 is connected to the positive pole of the energy storage element, and the output terminal of the voltage regulator U2 outputs a 12V voltage source.

[0031] In this embodiment, the outputs of the energy storage element are converted into 5V and 12V voltage sources through two voltage regulators to meet the power supply of the entire acquisition system. At the same time, voltage sources of other specifications can be configured as needed.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A collection system for a control platform, comprising a control unit, a collection unit, a power supply unit, a wireless transmission unit and a wireless reception unit. The wireless transmission unit is connected to the control unit, the wireless reception unit is connected to the control platform, the collection unit is connected to the control unit, and the power supply unit supplies power to the collection system. It is characterized in that, the power supply unit includes a state detection circuit, an oscillator circuit, and a piezoelectric element, a rectifier, a Buck-Boost circuit, an energy storage element, and a voltage stabilization circuit connected in sequence. The input end of the state detection circuit is connected to the output end of the rectifier, the output end of the state detection circuit controls the oscillator circuit, the output end of the oscillator circuit controls the Buck-Boost circuit, the piezoelectric element is arranged on the production equipment, and the voltage stabilization circuit is used to convert the output of the energy storage element into voltage power supplies of multiple specifications.

2. The acquisition system of a control platform according to claim 1, characterized in that, The Buck-Boost circuit includes a capacitor C1, a MOS transistor Q1, an inductor L1, and a zener diode D2. The capacitor C1 is connected in parallel to the output end of the rectifier. The gate of the MOS transistor Q1 is connected to the oscillator circuit. The drain of the MOS transistor Q1 is connected to the positive output end of the rectifier. The source of the MOS transistor Q1 is connected to the first end of the inductor L1. The second end of the inductor L1 is connected to the negative output end of the rectifier. The first end of the inductor L1 is connected to the positive pole of the energy storage element. The second end of the inductor L1 is connected to the negative pole of the energy storage element through the zener diode D2.

3. The acquisition system of a control platform according to claim 1, characterized in that, The state detection circuit includes an operational amplifier U5, a resistor R6, a resistor R7, a resistor R8, and a resistor R9. The resistor R6 and the resistor R7 are connected in series between the positive output end of the rectifier and the ground. The connection point of the resistor R6 and the resistor R7 is connected to the non-inverting input end of the operational amplifier U5. The inverting input end of the operational amplifier U5 is connected to the negative output end of the rectifier through the resistor R8. The inverting input end of the operational amplifier U5 is connected to the output end of the operational amplifier U5 through the resistor R9. The output end of the operational amplifier U5 is connected to the oscillator circuit.

4. The acquisition system of a control platform according to claim 2, wherein The oscillator circuit includes an operational amplifier U3, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a zener diode D4, a thyristor Q3, and an inverter U4. The resistor R1, the resistor R2, and the zener diode D4 are connected in series between a 5V voltage source and the ground. The controlled end of the zener diode D4 is connected to the state detection circuit. The connection point of the resistor R1 and the resistor R2 is connected to the non-inverting input end of the operational amplifier U3. The non-inverting input end of the operational amplifier U3 is connected to the output end of the operational amplifier U3 through the resistor R3. The inverting input end of the operational amplifier U3 is connected to the output end of the operational amplifier U3 after being connected in series with the zener diode D4 and the resistor R4. The inverting input end of the operational amplifier U3 is also connected to the output end of the operational amplifier U3 through the resistor R5. The output end of the operational amplifier U3 is connected to the input end of the inverter U4. The output end of the inverter U4 is connected to the gate of the MOS transistor Q1.

5. The acquisition system of a control platform according to claim 1, characterized in that, The voltage stabilizing circuit includes a voltage regulator U1 and a voltage regulator U2. The input terminal of the voltage regulator U1 is connected to the positive electrode of the energy storage element, the output terminal of the voltage regulator U1 outputs a 5V voltage source, the input terminal of the voltage regulator U2 is connected to the positive electrode of the energy storage element, and the output terminal of the voltage regulator U2 outputs a 12V voltage source.

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