Control board card circuit, control board card and monitor

Abstract

The utility model relates to the technical field of instrument control devices, in particular to a control board card circuit, a control board card and a monitor. A control board card circuit is used for controlling a linear motor and comprises a power supply module and a positive and negative voltage switching module. The positive and negative voltage switching module comprises an input unit, an output unit and a control unit; the control unit is connected between the input unit and the output unit; the input unit is connected with the power module. The output unit is connected with the motor and external voltage. The control unit receives a voltage signal output by the power supply module through the input unit, converts an external voltage into a positive voltage or a negative voltage according to the voltage signal, and finally outputs the positive voltage or the negative voltage to the motor through the output unit; the motor receives the voltage output by the positive and negative voltage switching module and stretches out and draws back according to the positive and negative voltage. On the basis of simplifying the system design, the response speed of pressing or loosening the filter paper and the control precision are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of instrument control device, especially to a control board card circuit, control board card and monitor. BACKGROUND

[0002] Traditional nuclear aerosol monitoring equipment realizes filter paper compression or loosening by adopting electromagnetic or manual compression and loosening.

[0003] Manual control process is complicated and time-consuming, and the compression effect may be inconsistent due to the experience and skill difference of operators, affecting the accuracy of monitoring data. Moreover, electromagnetic control needs to pass through mechanical conversion mechanism, resulting in low response speed and control precision, and mechanical wear needs regular maintenance, which may produce high noise and vibration, and system integration and design adjustment are more complex. SUMMARY

[0004] The utility model solves the technical problem, and provides a control board card circuit, control board card and monitor.

[0005] The utility model adopts the technical scheme in the technical solution that solves its technical problem: a control board card circuit is used for controlling a linear motor, and the control board card circuit comprises a power module and a positive and negative voltage switching module.

[0006] The positive and negative voltage switching module comprises an input unit, an output unit and a control unit, and the control unit is connected between the input unit and the output unit.

[0007] The input unit is connected with the power module, and the output unit is connected with the motor and an external voltage.

[0008] The control unit receives the voltage signal output by the power module through the input unit, converts the external voltage into a positive voltage or a negative voltage according to the voltage signal, and finally outputs to the motor through the output unit.

[0009] The motor receives the voltage output by the positive and negative voltage switching module and stretches or shrinks according to the positive and negative of the voltage.

[0010] Preferably, the control unit comprises a first controller, a second controller, a third controller and a fourth controller, the input unit comprises a first input port and a second input port, and the output unit comprises a first output port and a second output port.

[0011] The power module is connected with the first controller and the second controller through the first input port.

[0012] The power module is connected with the third controller and the fourth controller through the second input port.

[0013] The first controller connects the first output port and the external voltage, the fourth controller connects the first output port and the ground, the second controller connects the second output port and the ground, and the third controller connects the second output port and the external voltage.

[0014] The motor is connected between the first output port and the second output port.

[0015] The first controller and the second controller convert the external voltage into a positive voltage, and the third controller and the fourth controller convert the external voltage into a negative voltage.

[0016] Preferably, the positive and negative voltage switching module further comprises a protection unit for protecting the safety of the positive and negative voltage switching module circuit; the protection unit is connected between the input unit and the control unit.

[0017] Preferably, the protection unit comprises a start voltage switch; the start voltage switch comprises a transistor Q1, a transistor Q2 and a transistor Q3.

[0018] The base of the transistor Q1 is connected with the first input port; the collector of the transistor Q1 is connected with the external power supply; and the emitter of the transistor Q1 is connected with the collector of the transistor Q2.

[0019] The base of the transistor Q2 is connected with the second input port; the emitter of the transistor Q2 is grounded and connected with the base of the transistor Q3.

[0020] The collector of the transistor Q3 is connected with the external power supply and the control unit, and the emitter of the transistor Q3 is grounded.

[0021] Preferably, the protection unit further comprises a resistor R1, a resistor R2 and a resistor R3.

[0022] The resistor R1 is connected between the emitter of the transistor Q2 and the ground.

[0023] The resistor R2 is connected between the emitter of the transistor Q2 and the base of the transistor Q3.

[0024] The resistor R3 is connected between the external power supply and the collector of the transistor Q3.

[0025] Preferably, the control unit further comprises an optical coupling U1 and an optical coupling U2.

[0026] The positive input end of the optical coupling U1 and the positive input end of the optical coupling U2 are connected with the collector of the transistor Q3; and the negative input end of the optical coupling U1 and the negative input end of the optical coupling U2 are grounded.

[0027] The access end C pole of the optical coupler U1 is connected with the first input port; the access end E pole of the optical coupler U1 is connected with the first controller and the second controller;

[0028] The access end C pole of the optical coupler U2 is connected with the second input port; the access end E pole of the optical coupler U2 is connected with the third controller and the fourth controller.

[0029] Preferably, the control board card further comprises a signal acquisition unit for acquiring aerosol information, an output control unit for controlling the acquisition device, and a single-chip microcomputer unit for receiving and issuing instructions to each unit to perform operations;

[0030] The signal acquisition unit, the output control unit and the single-chip microcomputer unit are connected with the power module;

[0031] The single-chip microcomputer unit is further connected with the signal acquisition unit, the output control unit and the positive and negative voltage switching module.

[0032] Preferably, the signal acquisition unit comprises a barometer signal acquisition unit, a flowmeter signal acquisition unit and / or an encoder signal acquisition unit.

[0033] The control board card further comprises an aerosol monitor, which comprises any one of the control board card circuits.

[0034] The control board card further comprises an aerosol monitor, which comprises any one of the control board card circuits.

[0035] The utility model has the following beneficial effects:

[0036] The utility model discloses a positive and negative voltage switching module reverses the voltage signal of the power module, and then the motor controls the compression or loosening of the filter paper according to the positive and negative voltage output by the positive and negative voltage switching module. BRIEF DESCRIPTION OF DRAWINGS

[0037] The utility model will be further described below in combination with the drawings and examples:

[0038] Figure 1 It is a control board card circuit schematic diagram in one embodiment;

[0039] Figure 2 It is a positive and negative voltage switching module functional unit schematic diagram in one embodiment;

[0040] Figure 3 It is a positive and negative voltage switching module control unit schematic diagram in one embodiment;

[0041] Figure 4A schematic diagram of a protection unit of the positive and negative voltage switching module in an embodiment;

[0042] Figure 5 A schematic diagram of an optocoupler of the control unit in an embodiment;

[0043] Figure 6 A schematic diagram of a controller of the control unit in an embodiment. DETAILED DESCRIPTION

[0044] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific embodiments of the utility model will be described in detail with reference to the drawings.

[0045] The terms "first", "second" and the like are only used for the purpose of convenient description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features.

[0046] The above terms are only for the convenience of description, and cannot be understood as a limitation on the technical scheme.

[0047] The control board card circuit provided by the embodiment of the utility model is used for controlling a linear motor, such as Figure 1 As shown, the control board card circuit comprises a power module and a positive and negative voltage switching module.

[0048] It should be noted that the power module is connected with a power supply. The power supply can be an external power supply or a power supply for supplying power to the control board card circuit.

[0049] The power module can change the voltage of the power supply, and transmit the voltage of the power supply after voltage division to the positive and negative voltage switching module.

[0050] The positive and negative voltage switching module comprises an input unit, an output unit and a control unit. The control unit is connected between the input unit and the output unit.

[0051] The input unit is connected with the power module, and the output unit is connected with the motor and the external voltage.

[0052] The control unit receives the voltage signal output by the power module through the input unit, converts the external voltage into a positive voltage or a negative voltage according to the voltage signal, and finally outputs to the motor through the output unit.

[0053] Specifically, the input unit obtains different voltage output by the power module and transmits it to the control unit. The control unit controls the connection of the external voltage according to the received voltage signal, and then outputs from the output unit.

[0054] The motor receives the voltage output by the positive and negative voltage switching module, and expands or contracts according to the positive and negative of the voltage.

[0055] Specifically, the positive and negative voltage switching module can control the on-off of relays or MOSFETs through a microcontroller to switch the positive and negative of the power supply voltage of the motor, thereby controlling the extension and retraction of the motor.

[0056] The motor of the utility model can extend and retract according to the voltage output by the received positive and negative voltage switching module, thereby controlling the compression and release of the filter paper. First of all, it can realize precise motor control by changing the polarity of the voltage to control the direction of the motor, thereby realizing the extension and retraction function, which is particularly important in automated equipment and precision control systems. Secondly, this control method can provide high efficiency and high reliability, because the utility model adopts an efficient electronic commutation scheme instead of traditional brushes and mechanical commutators, thereby improving energy efficiency and reducing wear and tear. In addition, by switching the voltage to control the extension and retraction of the motor, fast response and high control accuracy can be achieved, which is crucial for applications that require fast and precise motion control.

[0057] In some executable embodiments, the motor is a linear motor. When a positive voltage is provided to the linear motor, the motor extends to compress the filter paper, and when a negative voltage is provided to the linear motor, the motor retracts to release the filter paper.

[0058] In an executable embodiment, the control unit includes a first controller, a second controller, a third controller, and a fourth controller. The input unit includes a first input port and a second input port; the output unit includes a first output port and a second output port.

[0059] The power module connects the first controller and the second controller through the first input port.

[0060] The power module connects the third controller and the fourth controller through the second input port.

[0061] Specifically, the first input port and the second input port are connected to different voltage sources.

[0062] The first controller connects the first output port and the external voltage, the fourth controller connects the first output port and the ground, the second controller connects the second output port and the ground, and the third controller connects the second output port and the external voltage.

[0063] According to the voltage output by the first input port and the second input port, it is determined whether the motor is controlled by the first controller and the second controller or by the third controller and the fourth controller. If the first controller and the second controller control the motor, a positive voltage is output from the first output port to the second output port, and if the third controller and the fourth controller control the motor, a negative voltage is output from the first output port to the second output port, and vice versa.

[0064] In some scenarios, the first input port and the second input port can be IO ports. Referring to Figure 2The positive and negative unit switching module includes a control unit and a protection module, the input is two IO ports, which are a first input port A and a second input port B respectively, and the output is two pins, which are a first output port C and a second output port D respectively, and the positive and negative voltage can be output.

[0065] The motor is connected between the first output port and the second output port.

[0066] The motor is controlled by the positive and negative voltage between the first output port and the second output port.

[0067] The first controller and the second controller convert the external voltage into a positive voltage, and the third controller and the fourth controller convert the external voltage into a negative voltage.

[0068] In an executable embodiment, the positive and negative voltage switching module further includes a protection unit for protecting the safety of the positive and negative voltage switching module circuit. The protection unit is connected between the input unit and the control unit.

[0069] The addition of the protection unit can improve the safety and stability of the positive and negative voltage switching module. Its main function is to prevent the circuit from being damaged due to abnormal conditions such as excessive voltage, excessive current, excessive temperature, etc.

[0070] At the same time, the utility model also helps to improve the safety and stability of the system, through various protection measures in the circuit design, such as overload protection and short circuit protection, which can effectively protect the motor from damage and ensure the stable operation of the system.

[0071] In an executable embodiment, the protection unit includes an on-voltage switch; the on-voltage switch includes a triode Q1, a triode Q2 and a triode Q3.

[0072] The base of the triode Q1 is connected with the first input port; the collector of the triode Q1 is connected with an external power supply; and the emitter of the triode Q1 is connected with the collector of the triode Q2.

[0073] The base of the triode Q2 is connected with the second input port; the emitter of the triode Q2 is grounded and connected with the base of the triode Q3.

[0074] The collector of the triode Q3 is connected with the external power supply and the control unit, and the emitter of the triode Q3 is grounded.

[0075] Further, the triode is used to build a logic control AND gate and a switch, and the state of the on-voltage is controlled through the first input port and the second input port. The on-voltage here is the voltage between the collector of the triode Q3 and the external power supply.

[0076] In an executable embodiment, the protection unit further includes resistors R1, R2 and R3.

[0077] The resistor R1 is connected between the emitter of the transistor Q2 and the ground. The resistor R1 is used to pull up the voltage on the ground side, so that the current can flow to the transistor Q3.

[0078] The resistor R2 is connected between the emitter of the transistor Q2 and the base of the transistor Q3. The resistor R2 is used to protect the transistor Q3 from being broken down.

[0079] The resistor R3 is connected between the external power supply and the collector of the transistor Q3. The resistor R3 is used to protect the transistor Q3 and pull up the voltage.

[0080] Specifically, the protection unit principle is as shown in Figure 4 The protection unit is composed of a logic control AND gate and a switch built by transistors, and the state of the opening voltage is controlled through the first input port A and the second input port B. The protection unit contains three transistors Q1, Q2, Q3 and three resistors R1, R2, R3, and its logic is: when A and B are high at the same time, Q1 and Q2 are turned on, at this time E is high, so that Q3 is turned on, the opening voltage is 0V, thereby protecting the control unit from working; when A and B are not high at the same time, at least one of Q1 and Q2 is not turned on, at this time E is low, Q3 is not turned on, the opening voltage is high, at this time the controller can work normally. The opening voltage is the voltage between the collector of the transistor Q3 and the resistor R3.

[0081] Referring to Figure 4In an executable embodiment, the control unit includes four controllers, namely a first controller 1, a second controller 2, a third controller 3 and a fourth controller 4, wherein the first controller 1 and the second controller 2 are controlled by the first input port A, and the third controller 3 and the fourth controller 4 are controlled by the second input port B; and further includes an opening voltage V0 of the protection unit output. The logic is as follows: when V0>3.3V positive voltage and the power supply unit output received by the first input port A is high level and the power supply unit output received by the second input port B is low level, then the first controller 1 and the second controller 2 are opened, at this time the first output port C is connected with the external voltage V1, the second output port D is connected with the external ground GND, and a positive voltage is output from the first output port C to the second output port D; when V0>3.3V positive voltage and the power supply unit output received by the first input port A is low level and the power supply unit output received by the second input port B is high level, then the controller 3 and the controller 4 are opened, at this time the second output port D is connected with the external voltage V1, the first output port C is connected with the external ground GND, and a negative voltage is output from the first output port C to the second output port D; when V0>3.3V positive voltage and the power supply unit output received by the first input port A is low level and the power supply unit output received by the second input port B is low level, then the first to fourth controllers are not opened, at this time there is no output; when the power supply unit output received by the first input port A and the second input port B is high level, at this time the protection module is triggered to work, so that V0 is 0V, and the first to fourth controllers are not opened, at this time there is no output.

[0082] In an executable embodiment, the control unit further includes an optocoupler U1 and an optocoupler U2.

[0083] The positive input terminal of the optocoupler U1 and the positive input terminal of the optocoupler U2 are connected with the collector of the triode Q3. The negative input terminal of the optocoupler U1 and the negative input terminal of the optocoupler U2 are grounded.

[0084] The access terminal C of the optocoupler U1 is connected with the first input port. The access terminal E of the optocoupler U1 is connected with the first controller and the second controller.

[0085] The access terminal C of the optocoupler U2 is connected with the second input port; and the access terminal E of the optocoupler U2 is connected with the third controller and the fourth controller.

[0086] The voltage received by the positive input terminal of the optocoupler U1 and the positive input terminal of the optocoupler U2 is the opening voltage.

[0087] By using the optocoupler, it can be ensured that the control signal will not be directly connected when transmitted between different potentials, thereby reducing the risk of electric shock and the possibility of circuit damage.

[0088] Reference Figure 5In some executable embodiments, the opening voltage V0 of the protection unit is connected to the positive input terminal of the optocoupler U1 through the resistor R4 and to the positive input terminal of the optocoupler U1 through the resistor R5.

[0089] The access terminal C of the optocoupler U1 is connected to the first input port A. The access terminal E of the optocoupler U1 is connected to the first controller and the second controller and is further connected to the ground through the resistor R6.

[0090] The access terminal C of the optocoupler U2 is connected to the second input port B. The access terminal E of the optocoupler U2 is connected to the third controller and the fourth controller and is further connected to the ground through the resistor R7.

[0091] The stability and safety line of the optocoupler are improved by adding the resistor.

[0092] In one executable embodiment, the control board card circuit further comprises a signal acquisition unit for acquiring aerosol information, an output control unit for controlling the acquisition device, and a single-chip microcomputer unit for receiving and issuing instructions to each unit to perform operations.

[0093] The signal acquisition unit, the output control unit, and the single-chip microcomputer unit are connected to the power module.

[0094] The single-chip microcomputer unit is further connected to the signal acquisition unit, the output control unit, and the positive and negative voltage switching module.

[0095] Specifically, the signal acquisition unit can acquire barometer signals, flowmeter signals, encoder signals, etc., and be designed according to specific needs. The output control unit can control stepping motors, vacuum pumps, sampling pumps, solenoid valves, etc.

[0096] The single-chip microcomputer unit collects the required signals through the signal acquisition unit. The single-chip microcomputer unit controls the output control unit to output according to the collected signals, and outputs the required content to the corresponding place, such as the filter paper controlled by the motor.

[0097] Referring to Figure 6 In some executable embodiments, the four controllers include a MOS tube Q4, a chip K1, a resistor R8, a photosensitive diode D1, and a diode D3.

[0098] The S terminal of the MOS tube Q4 is connected to the ground. The G terminal of the MOS tube Q4 is connected to the corresponding optocoupler. The D terminal of the MOS tube Q4 is connected to the resistor R8, the photosensitive diode D1, and the diode D3. The diode D3 is connected in parallel with the resistor R8 and the photosensitive diode D1, and the resistor R8 is connected in series with the photosensitive diode D1. The pin 1 and the pin 4 of the chip K1 are respectively connected to the two ends of the diode D3, and are connected in parallel with the resistor R8 and the photosensitive diode D1.

[0099] The external power supply is connected with pin 3 of the chip in the first controller and the third controller. Pin 2 of the chip is connected with the corresponding output port.

[0100] Pin 3 of the chip is connected with the corresponding output port in the second controller and the fourth controller. Pin 2 of the chip is grounded.

[0101] In some executable embodiments, the power module further includes a power input lightning protection and filtering design. In order to adapt to the influence of the device in harsh environments, enhance the reliability of the device, and ensure that the control board card can work normally under different input power conditions.

[0102] In an executable embodiment, the signal acquisition unit includes a barometer signal acquisition unit and / or a flowmeter signal acquisition unit, and an encoder signal acquisition unit.

[0103] The signal acquisition unit, including the barometer, flowmeter and encoder signal acquisition unit, provides the system with key monitoring and control capabilities. The barometer unit can accurately measure the environmental pressure, which is crucial for systems that need to adjust operations according to pressure changes, such as weather monitoring and altitude measurement. The flowmeter unit ensures accurate measurement of fluid flow, which is particularly important for controlling devices such as aerosol generators, ensuring consistency and stability of output. The encoder unit enhances the positioning accuracy and response speed of the system by providing accurate position and speed feedback, which is crucial for automation and precision control applications. The integration of these units makes the entire system more intelligent and adaptive, improving the flexibility and reliability of operation.

[0104] The utility model also provides a control board card of aerosol monitor, including any one control board card circuit above.

[0105] The utility model also provides a kind of aerosol monitor, including the control board card of aerosol monitor above.

[0106] Further, the aerosol monitor further includes a motor and a filter paper.

[0107] The above embodiments only express the preferred embodiments of the utility model, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the utility model patent; it should be pointed out that for ordinary skilled persons in the art, the above technical features can be freely combined without departing from the concept of the utility model, and a plurality of variations and improvements can be made, which belong to the protection scope of the utility model; therefore, any equivalent transformation and modification within the scope of the claims of the utility model should belong to the scope of the claims of the utility model.

Claims

1. A control board card circuit, characterized by, The application relates to a control board circuit for controlling a linear motor, which comprises a power module and a positive and negative voltage switching module. The positive and negative voltage switching module comprises an input unit, an output unit and a control unit, and the control unit is connected between the input unit and the output unit. The input unit is connected to the power module, and the output unit is connected to the motor and an external voltage. The control unit receives a voltage signal output by the power module through the input unit, converts the external voltage into a positive voltage or a negative voltage according to the voltage signal, and finally outputs the voltage to the motor through the output unit. The motor receives the voltage output by the positive and negative voltage switching module and extends or shrinks according to the positive and negative voltage.

2. The control board card circuit of claim 1, wherein, The control unit comprises a first controller, a second controller, a third controller and a fourth controller; the input unit comprises a first input port and a second input port; and the output unit comprises a first output port and a second output port. The power module is connected to the first controller and the second controller through the first input port. The power module is connected to the third controller and the fourth controller through the second input port. The first controller is connected to the first output port and the external voltage, the fourth controller is connected to the first output port and the ground, the second controller is connected to the second output port and the ground, and the third controller is connected to the second output port and the external voltage. The motor is connected between the first output port and the second output port. The first controller and the second controller convert the external voltage into a positive voltage, and the third controller and the fourth controller convert the external voltage into a negative voltage.

3. The control board card circuit of claim 2, wherein, The positive and negative voltage switching module further comprises a protection unit for protecting the circuit of the positive and negative voltage switching module; and the protection unit is connected between the input unit and the control unit.

4. The control board card circuit of claim 3, wherein, The protection unit comprises a start voltage switch, and the start voltage switch comprises a transistor Q1, a transistor Q2 and a transistor Q3. The base of the transistor Q1 is connected to the first input port, the collector of the transistor Q1 is connected to an external power supply, and the emitter of the transistor Q1 is connected to the collector of the transistor Q2. The base of the transistor Q2 is connected to the second input port, the emitter of the transistor Q2 is grounded and connected to the base of the transistor Q3. The collector of the transistor Q3 is connected to the external power supply and the control unit, and the emitter of the transistor Q3 is grounded.

5. The control board card circuit of claim 4, wherein, The protection unit further comprises a resistor R1, a resistor R2 and a resistor R3. The resistor R1 is connected between the emitter of the transistor Q2 and the ground. The resistor R2 is connected between the emitter of the transistor Q2 and the base of the transistor Q3. The resistor R3 is connected between the external power supply and the collector of the transistor Q3.

6. The control board card circuit of claim 5, wherein, The control unit further comprises an optical coupler U1 and an optical coupler U2. The positive input end of the optical coupler U1 and the positive input end of the optical coupler U2 are connected to the collector of the transistor Q3, and the negative input end of the optical coupler U1 and the negative input end of the optical coupler U2 are grounded. The access end C pole of the optical coupler U1 is connected with the first input port; the access end E pole of the optical coupler U1 is connected with the first controller and the second controller; The access end C pole of the optical coupler U2 is connected with the second input port; the access end E of the optical coupler U2 is connected with the third controller and the fourth controller.

7. The control board card circuit of claim 3, wherein, Further comprising a signal acquisition unit for collecting aerosol information, an output control unit for controlling the acquisition device, a single-chip microcomputer unit for receiving and issuing instructions to each unit to perform operations; The signal acquisition unit, the output control unit and the single-chip microcomputer unit are connected with the power module; The single-chip microcomputer unit is further connected with the signal acquisition unit, the output control unit and the positive and negative voltage switching module.

8. The control board card circuit of claim 7, wherein, The signal acquisition unit comprises a barometer signal acquisition unit and / or a flowmeter signal acquisition unit, an encoder signal acquisition unit.

9. A control board card of an aerosol monitor, characterized by, The control board card circuit comprises any one of claims 1 to 8.

10. An aerosol monitor characterized by, The control board card of the aerosol monitor comprises claim 9.

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