A dew point detector circuit, a circuit board and a portable dew point detector

Abstract

This application provides a dew point detector circuit, circuit board, and portable dew point detector. The dew point detector circuit may include a dew point sensor unit for acquiring dew point detection data; a calendar unit for acquiring the current time; a display unit for displaying the current time based on a time display signal and the dew point detection data based on a data display signal; and a control unit connected to the dew point sensor unit, calendar unit, and display unit, which outputs the time display signal and data display signal to the display unit based on the current time and dew point detection data. By setting up a calendar unit and a dew point sensor unit, the dew point detector can simultaneously display the current time and dew point detection data on the display unit during operation. This allows users to intuitively obtain time information from the dew point detector without needing to query it through other devices, effectively improving the ease of use of the dew point detector.

Description

Technical Field

[0001] This application relates to the field of dew point detector technology, and in particular to a dew point detector circuit, circuit board, and portable dew point detector. Background Technology

[0002] In industries such as petrochemicals, natural gas, metallurgy, drying equipment, electronics and power, and machinery manufacturing, dew point meters are required to detect the dew point in the environment to ensure the dryness of the environment. During the detection process, it is generally necessary to record the current dew point detection data.

[0003] However, current portable dew point meters can only display dew point detection data and battery level, and cannot display other information recorded with the data. This means that when users register the currently detected dew point data, they need to use other devices to view the relevant information to complete the registration, making the use of portable dew point meters inconvenient. Summary of the Invention

[0004] The main objective of this application is to provide a dew point detector circuit, circuit board, and portable dew point detector, aiming to improve the ease of use of the dew point detector.

[0005] To achieve the above objectives, a first aspect of this application provides a dew point detector circuit, comprising:

[0006] Dew point sensor unit, used to acquire dew point detection data;

[0007] The calendar unit is used to retrieve the current time;

[0008] The display unit is used to display the current time based on a time display signal and to display the dew point detection data based on a data display signal;

[0009] The control unit is connected to the dew point sensor unit, the calendar unit, and the display unit respectively. The control unit is used to output the time display signal and the data display signal to the display unit based on the current time and the dew point detection data.

[0010] In one embodiment, the display unit is a touch screen device, and the display unit is further configured to acquire a target dew point type selection signal;

[0011] The control unit is also configured to receive the target dew point type selection signal and output the data display signal for the selected target dew point type to the display unit.

[0012] In one embodiment, the display unit is a touch screen device, and the display unit is also used to acquire dew point detection data export signal;

[0013] The dew point detector circuit also includes:

[0014] A data export unit is connected to the control unit. The data export unit is used to connect to an external storage medium and transmit the dew point detection data to the external storage medium based on the export control signal.

[0015] The control unit is also used to acquire the dew point detection data export signal and output the export control signal to the data export unit.

[0016] In one embodiment, the dew point detector circuit further includes:

[0017] A communication unit is connected to the control unit, and the communication unit is used for the control unit to communicate and interact with an external host communication device.

[0018] In one embodiment, the dew point detector circuit further includes:

[0019] External power supply module;

[0020] Battery module;

[0021] A power supply switching module is connected to both the external power supply module and the battery module, and the power supply switching module is used to perform one of the following:

[0022] When an external power supply is connected to the external power supply module, power is supplied to the dew point detector circuit through the external power supply module.

[0023] When no external power source is connected to the power supply module, the dew point detector circuit is powered through the battery module.

[0024] In one embodiment, the dew point detector circuit further includes:

[0025] An external power supply indicator module is connected to both the control unit and the external power supply module. The external power supply indicator module is used to output a first indicator signal to the control unit when an external power supply is connected to the external power supply module.

[0026] A charging management module is connected to the control unit and the battery module respectively. The charging management module is used to charge the battery module and output a second indication signal to the control unit when the battery module is being charged.

[0027] An indicator light unit is connected to the control unit. The indicator light unit is used to indicate that the dew point detector circuit is in an external power supply state based on a first state indication signal, or to indicate that the dew point detector circuit is in a charging state based on a second state indication signal, or to indicate that the dew point detector circuit is in a battery power supply state based on a third state indication signal.

[0028] The control unit is further configured to receive the first indication signal and output the first status indication signal to the indicator unit, or receive the second indication signal and output the second status indication signal to the indicator unit, or output the third status indication signal to the indicator unit if the first indication signal is not received.

[0029] In one embodiment, the dew point detection data includes dew point detection voltage and dew point detection current;

[0030] The dew point detector circuit also includes:

[0031] An audible alarm unit is connected to the control unit, and the audible alarm unit is used to issue an audible alarm signal based on an alarm indication signal;

[0032] The control unit is also configured to output the alarm indication signal to the audible alarm unit when the dew point detection voltage is greater than or equal to a preset voltage warning threshold, or when the dew point detection current is greater than or equal to a preset current warning threshold.

[0033] In one embodiment, the dew point detector circuit further includes:

[0034] A current conversion unit is connected to the control unit, and the current conversion unit is used to convert the dew point detection data into a target current signal and output it.

[0035] To achieve the above objectives, a second aspect of the present application provides a dew point detector circuit board, including the dew point detector circuit as described in the first aspect above.

[0036] To achieve the above objectives, a third aspect of this application provides a portable dew point detector, including a dew point detector circuit board as described in the second aspect above.

[0037] This application discloses a dew point detector circuit, circuit board, and portable dew point detector. The dew point detector circuit may include a dew point sensor unit for acquiring dew point detection data; a calendar unit for acquiring the current time; a display unit for displaying the current time based on a time display signal and the dew point detection data based on a data display signal; and a control unit connected to the dew point sensor unit, the calendar unit, and the display unit, respectively. The control unit is used to output the time display signal and the data display signal to the display unit based on the current time and the dew point detection data. By setting up a calendar unit and a dew point sensor unit, the dew point detector can simultaneously acquire dew point detection data and the current time during operation and display the current time and dew point detection data on the display unit simultaneously. In this way, users can intuitively obtain time information from the dew point detector without having to query it through other devices, thereby effectively improving the ease of use of the dew point detector. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the dew point detector circuit provided in an embodiment of this application;

[0039] Figure 2 yes Figure 1 A circuit diagram of the dew point sensor unit in the image;

[0040] Figure 3 yes Figure 1 A circuit diagram of the calendar unit in the image;

[0041] Figure 4 yes Figure 1 A circuit diagram of the display unit in the image;

[0042] Figure 5 yes Figure 1 A circuit diagram of the control unit in the diagram;

[0043] Figure 6 yes Figure 1 A circuit diagram of the data export unit in the diagram;

[0044] Figures 7A to 7B yes Figure 1 A circuit diagram of the communication unit in the diagram;

[0045] Figure 8 yes Figure 1 A circuit diagram of the external power supply module in the diagram;

[0046] Figure 9 This is a schematic diagram of the power supply switching circuit provided in an embodiment of this application;

[0047] Figure 10This is a schematic diagram of the 24V boost circuit provided in the embodiments of this application;

[0048] Figure 11 This is a schematic diagram of the 12V step-down circuit provided in an embodiment of this application;

[0049] Figure 12 This is a schematic diagram of the 5V step-down circuit provided in the embodiments of this application;

[0050] Figure 13 This is a schematic diagram of the 3.3V step-down circuit provided in an embodiment of this application;

[0051] Figure 14 yes Figure 1 A circuit diagram of the external power supply indicator module in the diagram;

[0052] Figure 15 yes Figure 1 A circuit diagram of the indicator light unit in the diagram;

[0053] Figure 16 yes Figure 1 A circuit diagram of the audible alarm unit in the image;

[0054] Figure 17 yes Figure 1 The circuit diagram of the current conversion unit in the image.

[0055] Figure label:

[0056] Dew point sensor unit 1, calendar unit 2, display unit 3, control unit 4, data export unit 5, communication unit 6, RS485 communication module 601, RS422 communication module 602, external power supply module 701, battery module 702, power supply switching module 703, power supply switching circuit 7031, power supply switching sub-circuit 70311, voltage regulator circuit 70312, 24V boost circuit 7032, 12V buck circuit 7033, 5V buck circuit 7034, 3.3V buck circuit 7035, external power supply indicator module 704, charging management module 705, indicator light unit 8, audible alarm unit 9, current conversion unit 10. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0058] It should be noted that although functional modules are divided in the device schematic diagram and a logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of this application only and is not intended to limit this application.

[0060] In related technologies, current portable dew point detectors can only display dew point detection data and battery level, but cannot display other information recorded with the data. This means that when users register the currently detected dew point data, they need to use other devices to view the relevant information to complete the registration, making the use of portable dew point detectors inconvenient.

[0061] To improve the ease of use of dew point detectors, this application provides a dew point detector circuit, a circuit board, and a portable dew point detector. The dew point detector circuit may include a dew point sensor unit for acquiring dew point detection data; a calendar unit for acquiring the current time; a display unit for displaying the current time based on a time display signal and displaying the dew point detection data based on a data display signal; and a control unit connected to the dew point sensor unit, calendar unit, and display unit, which outputs the time display signal and data display signal to the display unit based on the current time and dew point detection data. By incorporating a calendar unit and a dew point sensor unit, the dew point detector can simultaneously acquire dew point detection data and the current time during operation and display both simultaneously on the display unit. This allows users to intuitively obtain time information from the dew point detector without needing to query it through other devices, effectively improving the ease of use of the dew point detector.

[0062] See Figure 1 , Figure 1 The structure of a dew point detector circuit provided in an embodiment of this application is shown. A first aspect of this application provides a dew point detector circuit, which may include a dew point sensor unit 1, a calendar unit 2, a display unit 3, and a control unit 4.

[0063] The dew point sensor unit 1 can be used to acquire dew point detection data, the calendar unit 2 can be used to acquire the current time, and the display unit 3 can be used to display the current time based on the time display signal and to display the dew point detection data based on the data display signal. The control unit 4 can be connected to the dew point sensor unit 1, the calendar unit 2, and the display unit 3 respectively. The control unit 4 can output the time display signal and the data display signal to the display unit 3 based on the current time and the dew point detection data.

[0064] Specifically, the control unit 4 is equipped with an analog-to-digital converter (ADC) port for connecting to the dew point sensor unit 1. The dew point sensor unit 1 acquires dew point detection data in analog signal form. After receiving the analog signal dew point detection data through the ADC port, the control unit 4 converts it into digital signal dew point detection data. Then, the control unit 4 performs relevant data processing and calculation based on the digital signal dew point detection data (e.g., converting it into measured values ​​of different physical quantities such as humidity and temperature), and generates a data display signal based on the data processing and calculation results. On this basis, another port on the control unit 4 connects to the calendar unit 2. After the dew point detector circuit is powered on, the calendar unit 2 can start acquiring the current time and feed it back to the control unit 4 through this port. The control unit 4 generates a time display signal based on this. The control unit 4 is equipped with multiple communication protocol ports. The control unit 4 can connect to the display unit 3 through one of these ports and output time display signals and data display signals to the display unit 3 through the connected communication protocol port. After receiving the time display signals and data display signals, the display unit 3 displays the current time and dew point detection data accordingly.

[0065] In one embodiment, the dew point sensor unit 1 may include various dew point sensors for different purposes, and the dew point sensors are connected to the control unit 4. The dew point sensors may be temperature sensors, humidity sensors, etc., and are not specifically limited here.

[0066] See Figure 2 In one embodiment, the dew point detection data may include dew point detection voltage and dew point detection current. The dew point sensor unit 1 may include a dew point detection voltage acquisition circuit and a dew point detection current acquisition circuit for connecting various dew point sensors for different purposes. The dew point detection voltage acquisition circuit and the dew point detection current acquisition circuit are connected to the ADC port on the control unit 4 to receive the voltage signal and current signal with dew point detection information returned by each dew point sensor.

[0067] In one embodiment, the calendar unit 2 can be a timer circuit unit other than the control unit 4 (e.g., using multiple decimal counters cascaded together to form the calendar unit 2), or it can be a circuit unit mainly composed of a time synchronization chip, etc., and the specific details are not limited here. For example, such as Figure 3 As shown, calendar unit 2 may include a PCF8563 chip and its peripheral circuitry. The PCF8563 chip can provide the current time to the dew point detector circuit.

[0068] In one embodiment, the display unit 3 can be an integrated display device (i.e., it can be used by directly connecting to the communication protocol port of the control unit 4). The display unit 3 can be a display screen with only display function, such as an LCD screen; the display unit 3 can also be a touch screen device, which, in addition to displaying information, supports users to input control signals to the control unit 4 through touch interaction, etc., etc., without specific limitations here. For example, see... Figure 4 The display unit 3 can be a touch screen device, specifically an HMI touch screen, and it interacts with the control unit 4 via a serial port protocol.

[0069] See Figure 5 In one embodiment, the control unit 4 can be a circuit unit composed of a microcontroller unit (MCU) and its peripheral circuitry. The MCU can be an AT32F4070VGT70, STM32F4070VGT6, HC32F460, etc., and is not specifically limited here. Additionally, the peripheral circuitry may include a flash module based on flash chips such as W25Q64, W25Q64JVSSIQ, MX25L6406EM2I, and their peripheral circuitry. This flash module can be used to store the operating program required by the dew point detector and to store the collected dew point data.

[0070] In one embodiment, when the display unit 3 is a touch screen device, the display unit 3 can also be used to acquire a target dew point type selection signal, and the control unit 4 can also be used to receive the target dew point type selection signal and output a data display signal for the selected target dew point type to the display unit 3.

[0071] Specifically, there are various types of physical quantities for dew point detection (such as temperature and humidity). Users do not necessarily need to view dew point data for all physical quantities in every dew point measurement. To facilitate user viewing, the control unit 4 can control the display unit 3 to display a selection interface. After the dew point sensor unit 1 acquires dew point data, the user can input a target dew point type selection signal to the display unit 3 by clicking on the selection interface. At this time, the display unit 3 will feed back the acquired target dew point type selection signal to the control unit 4. The control unit 4 determines the target dew point type to be displayed based on the target dew point type selection signal, and then generates a data display signal for that target dew point type, enabling the display unit 3 to display the dew point detection data for that target dew point type, effectively improving the ease of use of the dew point meter.

[0072] See Figure 6 In one embodiment, when the display unit 3 is a touchscreen device, the display unit 3 can also be used to acquire dew point detection data export signals. The dew point detector circuit may further include a data export unit 5, which is connected to the control unit 4. The data export unit 5 can be used to connect to an external storage medium and transmit dew point detection data to the external storage medium based on an export control signal. The control unit 4 can also be used to acquire the dew point detection data export signals and output export control signals to the data export unit 5. The external storage medium may be an SD card, a USB flash drive, etc., and is not specifically limited here.

[0073] Specifically, after the external storage medium is connected to the data export unit 5, the data export unit 5 can output a connection signal to the control unit 4. The control unit 4 can then output an external storage medium installation signal to the display unit 3 based on the connection signal. The display unit 3 displays that the dew point detector is connected to the external storage medium based on the external storage medium installation signal. The display unit 3 can also display a data export button on the display interface, which the user can click to input a dew point detection data export signal to the control unit 4. After receiving the dew point detection data export signal, the control unit 4 exports the dew point detection data to the external storage medium through the data export unit 5. This allows users to easily view or use the dew point data obtained from the dew point detector on other devices, effectively improving the ease of use of the dew point detector.

[0074] In one embodiment, the data export unit 5 can be an external storage medium interface, connected to multiple ports of the control unit 4, and data transmission based on a specific communication protocol can be performed through the multiple ports; the data export unit 5 can also be a circuit unit composed of a data export control chip and its peripheral circuits, etc., and no specific limitation is made here.

[0075] For example, Figure 6The data export unit 5 shown can be a circuit unit composed of a CH3706T chip and its peripheral circuits. The CH3706T chip can have USB and SD card management functions, allowing users to export dew point detection data via SD card or USB flash drive.

[0076] In one embodiment, the data export button can be displayed when the dew point detector is powered on, or it can be triggered by the display unit 3 after receiving the external storage medium installation signal, etc., and the specific details are not limited here.

[0077] In one embodiment, the dew point detector circuit may further include a communication unit 6, which is connected to the control unit 4. The communication unit 6 can be used for communication interaction between the control unit 4 and an external host communication device. The communication unit 6 may be a wireless communication unit such as a Wi-Fi unit or a Bluetooth unit, or a wired communication unit, etc., and is not specifically limited here. Furthermore, the external host communication device may be a communication terminal, a computer, etc., and is not specifically limited here.

[0078] See Figure 7A and Figure 7B In one embodiment, the communication unit 6 may include an RS485 communication module 601 and an RS422 communication module 602. Both the RS485 communication module 601 and the RS422 communication module 602 are connected to the corresponding communication ports of the control unit 4. The RS485 communication module 601 can realize communication interaction between the control unit 4 and the external upper-level communication device based on the RS485 communication protocol, and the RS422 communication module 602 can realize communication interaction between the control unit 4 and the external upper-level communication device based on the RS422 communication protocol. This allows users to use other devices to communicate with the dew point detector, effectively improving the convenience of using the dew point detector.

[0079] In one embodiment, the dew point detector circuit may further include an external power supply module 701, a battery module 702, and a power supply switching module 703. The power supply switching module 703 can be connected to the external power supply module 701 and the battery module 702, respectively, and can be used to perform one of the following: when the external power supply module 701 is connected to an external power source, power is supplied to the dew point detector circuit through the external power supply module 701; when the external power supply module 701 is not connected to an external power source, power is supplied to the dew point detector circuit through the battery module 702.

[0080] Specifically, the power supply switching module 703 has a power supply selection function, which can select the specific power supply method based on whether an external power source is connected. When no external power source is connected, the only power source for the dew point detector circuit is the battery module 702. Therefore, the power supply switching module 703 will use the battery module 702 to supply power to each unit and module in the dew point detector circuit. When an external power source is connected to the external power supply module 701, the only power source for the dew point detector circuit includes both the battery module 702 and the external power source connected to the external power supply module 701. In this case, the power supply switching module 703 will only use the external power source connected to the external power supply module 701 to supply power to each unit and module in the dew point detector circuit, thereby reducing the use of the battery module 702 and helping to improve the availability time of the dew point detector.

[0081] See Figure 8 In one embodiment, the external power supply module 701 may include a step-down chip and its peripheral circuitry, which together step down the voltage of the external power supply to a target voltage (e.g., ...). Figure 9 The input voltage is 24V, which is stepped down to the target voltage +AV to avoid affecting the power supply switching module 703 due to excessively high input voltage. The step-down chip can be MP4462BRZ, RCV420, etc. Figure 9 The MP4462DN shown is an example, and so on; no specific details are specified here.

[0082] In one embodiment, the power supply switching module 703 may include a power supply switching circuit 7031 and multiple transformer circuits with different voltage values. Each voltage value transformer circuit is connected to the corresponding unit or module. See also... Figure 9 The power supply switching circuit 7031 may include a power supply switching sub-circuit 70311 and a voltage regulator circuit 70312. The power supply switching sub-circuit 70311 may include a switching device and a switching device turn-on chip. The switching device is connected to the switching device turn-on chip and the external power supply module 701 respectively. The voltage regulator circuit 70312 is connected to the power supply switching sub-circuit 70311 and regulates the target voltage output by the power supply switching sub-circuit 70311. In this circuit, the switching device may be a MOSFET, a transistor, etc., which is not specifically limited here.

[0083] For example, see Figure 10 The transformer circuit may include a 24V boost circuit 7032, which is connected to a voltage regulator circuit 70312 and a control unit 4. The control unit 4 controls the 24V boost circuit 7032 to boost the target voltage back to 24V.

[0084] For example, see Figure 11The transformer circuit may include a 12V step-down circuit 7033, which is connected to a 24V boost circuit 7032. The 24V step-down circuit 7033 achieves the step-down processing of 24V to 12V through the 24V voltage provided by the 24V boost circuit 7032.

[0085] For example, see Figure 12 The transformer circuit may include a 5V step-down circuit 7034, which is connected to a voltage regulator circuit 70312. The target voltage is converted to 5V by the target voltage provided by the power supply switching circuit 7031.

[0086] For example, see Figure 13 The transformer circuit may include a 3.3V step-down circuit 7035, which is connected to a voltage regulator circuit 70312. The target voltage is converted to 3.3V by the target voltage provided by the power supply switching circuit 7031.

[0087] In one embodiment, the dew point detector circuit may further include an external power supply indicator module 704, a charging management module 705, and an indicator light unit 8. The external power supply indicator module 704 can be connected to both the control unit 4 and the external power supply module 701. The external power supply indicator module 704 outputs a first indicator signal to the control unit 4 when an external power source is connected to the external power supply module 701. The charging management module 705 can be connected to both the control unit 4 and the battery module 702. The charging management module 705 can charge the battery module 702 and output a second indicator signal to the control unit 4 when the battery module 702 is charging. The indicator light unit 8 is connected to the control unit 4. The indicator light unit 8 can display, based on the first status indicator signal, that the dew point detector circuit is in an external power supply state; or, based on the second status indicator signal, that the dew point detector circuit is in a charging state; or, based on the third status indicator signal, that the dew point detector circuit is in a battery-powered state. The control unit 4 can also be used to receive a first indication signal and output a first status indication signal to the indicator unit 8, or receive a second indication signal and output a second status indication signal to the indicator unit 8, or output a third status indication signal to the indicator unit 8 if the first indication signal is not received.

[0088] Specifically, when the external power supply module 701 is connected to an external power source, the external power supply indicator module 704 will be triggered to output a first indicator signal to the control unit 4. The power supply switching module 703 will then use the external power supply module 701 for power supply instead of the battery module 702. At this time, the control unit 4 can generate a first status indicator signal to control the indicator light unit 8 to show that the dew point detector circuit is in an external power supply state. When the external power supply module 701 is not connected to an external power source, the power supply switching module 703 will use the battery module 702 for power supply. Since the external power supply indicator module 704 does not output the first indicator signal at this time, the control unit 4 can generate a first status indicator signal to control the indicator light unit 8 to show that the dew point detector circuit is in a battery power supply state. Furthermore, when the charging management module 705 charges the battery module 702, it will be triggered to output a second indicator signal to the control unit 4. At this time, the power supply switching module 703 will maintain the current power supply mode, and the indicator light unit 8 can display that the dew point detector circuit is in a charging state based on the second indicator signal.

[0089] It should be noted that when indicator light unit 8 shows the dew point detector circuit is in battery-powered mode, it will not show that the dew point detector circuit is in external power-powered mode. Similarly, when indicator light unit 8 shows the dew point detector circuit is in external power-powered mode, it will not show that the dew point detector circuit is in battery-powered mode. However, when charging, regardless of whether indicator light unit 8 shows the dew point detector circuit in battery-powered or externally powered mode, it will indicate that the dew point detector circuit is in charging mode.

[0090] See Figure 14 In one embodiment, the external power supply indicator module 704 may include a switching device and peripheral circuitry. When the external power supply module 701 is connected to an external power source, the switching device will be turned on, thereby outputting a first indicator signal to the control unit 4 to indicate that the external power source is supplying power.

[0091] See Figure 15 In one embodiment, the indicator unit 8 may include an LED indicator. When in a power-on state, the control unit 4 may control the LED indicator to be constantly lit in the color corresponding to the current power-on state. When in a power-on state and a charging state, the control unit 4 may control the LED indicator to alternately indicate the current power-on state and the charging state in the color corresponding to the current power-on state and the charging state.

[0092] In one embodiment, the indicator unit 8 may include at least two LEDs, one of which indicates that the dew point detector circuit is charging. Additionally, when there are two LEDs, another LED indicates the power supply status; when there are three LEDs, the other two LEDs correspond to battery power and external power supply status, respectively.

[0093] See Figure 16 In one embodiment, the dew point detector circuit may further include an audible alarm unit 9, which is connected to the control unit 4. The audible alarm unit 9 may be used to issue an audible alarm signal based on an alarm indication signal. The control unit 4 may also be used to output an alarm indication signal to the audible alarm unit 9 when the dew point detection voltage is greater than or equal to a preset voltage warning threshold, or when the dew point detection current is greater than or equal to a preset current warning threshold.

[0094] Specifically, since the dew point detection voltage and dew point detection current can characterize dew point detection values ​​such as temperature and humidity, the control unit 4 can be set with a preset voltage warning threshold or a current warning threshold to represent the dew point detection threshold. When the control unit 4 receives the dew point detection voltage and dew point detection current, it can perform a threshold comparison based on the preset voltage warning threshold or current warning threshold. If the dew point detection voltage is greater than or equal to the preset voltage warning threshold, or if the dew point detection current is greater than or equal to the preset current warning threshold, or if both the dew point detection voltage and the dew point detection current are greater than or equal to the preset voltage warning threshold and the dew point detection current are greater than or equal to the preset current warning threshold, an audible alarm signal is emitted through the audible alarm unit 9. This quickly reminds the user that the currently detected dew point data has exceeded the threshold, which helps improve the ease of use of the dew point detector. The audible alarm unit 9 can be a buzzer, a speaker, etc., and is not specifically limited here.

[0095] In one embodiment, the dew point detector circuit may further include a current conversion unit 10, which may be connected to the control unit 4. The current conversion unit 10 may be used to convert the dew point detection data into a target current signal and output it.

[0096] Specifically, the current conversion unit 10 is a circuit unit that can output high-precision current. The control unit 4 can convert dew point detection data into a high-precision target current signal. Users can receive the target current signal through the current conversion unit 10, thereby resolving high-precision temperature, humidity and other data, which improves the data visualization capability of the dew point detector.

[0097] See Figure 17 In one embodiment, the current conversion unit 10 can be a high-precision current conversion chip and its peripheral circuitry. The current conversion chip can acquire dew point detection data through the control unit 4 and convert it into a high-precision target current signal. The current conversion chip can be an AD694AR, AD694ARZ, XTR117, etc., which have anti-interference capabilities; no specific limitation is made here.

[0098] The second aspect of this application also proposes a dew point detector circuit board, which applies the dew point detector circuit proposed in the first aspect above. The principle of the dew point detector circuit is as described above and will not be repeated here.

[0099] A third aspect of this application also proposes a portable dew point detector, which utilizes the dew point detector circuit board described in the second aspect above. The dew point detector circuit board includes the dew point detector circuit described in the first aspect above. The principle of the dew point detector circuit is as described above and will not be repeated here.

[0100] The embodiments described in this application are for the purpose of more clearly illustrating the technical solutions of this application, and do not constitute a limitation on the technical solutions provided in this application. As those skilled in the art will know, with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in this application are also applicable to similar technical problems.

[0101] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of this application, and may include more or fewer steps than shown, or combine certain steps, or different steps.

[0102] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs.

[0103] Those skilled in the art will understand that all or some of the steps in the methods disclosed above, as well as the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0104] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0105] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0106] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of the units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0107] The units described above as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0108] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0109] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes multiple instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing programs, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0110] The preferred embodiments of the present application have been described above with reference to the accompanying drawings, but this does not limit the scope of the claims of the present application. Any modifications, equivalent substitutions, and improvements made by those skilled in the art without departing from the scope and substance of the embodiments of the present application shall be within the scope of the claims of the present application.

Claims

1. A dew point detector circuit, characterized in that, include: Dew point sensor unit, used to acquire dew point detection data; The calendar unit is used to retrieve the current time; The display unit is used to display the current time based on a time display signal and to display the dew point detection data based on a data display signal; The control unit is connected to the dew point sensor unit, the calendar unit, and the display unit respectively. The control unit is used to output the time display signal and the data display signal to the display unit based on the current time and the dew point detection data.

2. The circuit according to claim 1, characterized in that, The display unit is a touch screen device, and the display unit is also used to acquire a target dew point type selection signal; The control unit is also configured to receive the target dew point type selection signal and output the data display signal for the selected target dew point type to the display unit.

3. The circuit according to claim 1, characterized in that, The display unit is a touch screen device, and the display unit is also used to acquire dew point detection data export signals; The dew point detector circuit also includes: A data export unit is connected to the control unit. The data export unit is used to connect to an external storage medium and transmit the dew point detection data to the external storage medium based on the export control signal. The control unit is also used to acquire the dew point detection data export signal and output the export control signal to the data export unit.

4. The circuit according to claim 1, characterized in that, The dew point detector circuit also includes: A communication unit is connected to the control unit, and the communication unit is used for the control unit to communicate and interact with an external host communication device.

5. The circuit according to claim 1, characterized in that, The dew point detector circuit also includes: External power supply module; Battery module; A power supply switching module is connected to both the external power supply module and the battery module, and the power supply switching module is used to perform one of the following: When an external power supply is connected to the external power supply module, power is supplied to the dew point detector circuit through the external power supply module. When no external power source is connected to the power supply module, the dew point detector circuit is powered through the battery module.

6. The circuit according to claim 5, characterized in that, The dew point detector circuit also includes: An external power supply indicator module is connected to both the control unit and the external power supply module. The external power supply indicator module is used to output a first indicator signal to the control unit when an external power supply is connected to the external power supply module. A charging management module is connected to the control unit and the battery module respectively. The charging management module is used to charge the battery module and output a second indication signal to the control unit when the battery module is being charged. An indicator light unit is connected to the control unit. The indicator light unit is used to indicate that the dew point detector circuit is in an external power supply state based on a first state indication signal, or to indicate that the dew point detector circuit is in a charging state based on a second state indication signal, or to indicate that the dew point detector circuit is in a battery power supply state based on a third state indication signal. The control unit is further configured to receive the first indication signal and output the first status indication signal to the indicator unit, or receive the second indication signal and output the second status indication signal to the indicator unit, or output the third status indication signal to the indicator unit if the first indication signal is not received.

7. The circuit according to claim 1, characterized in that, The dew point detection data includes the dew point detection voltage and the dew point detection current; The dew point detector circuit also includes: An audible alarm unit is connected to the control unit, and the audible alarm unit is used to issue an audible alarm signal based on an alarm indication signal; The control unit is also configured to output the alarm indication signal to the audible alarm unit when the dew point detection voltage is greater than or equal to a preset voltage warning threshold, or when the dew point detection current is greater than or equal to a preset current warning threshold.

8. The circuit according to claim 1, characterized in that, The dew point detector circuit also includes: A current conversion unit is connected to the control unit, and the current conversion unit is used to convert the dew point detection data into a target current signal and output it.

9. A circuit board for a dew point detector, characterized in that, The dew point detector circuit board includes the dew point detector circuit as described in any one of claims 1 to 8.

10. A portable dew point detector, characterized in that, The portable dew point detector includes the dew point detector circuit board as described in claim 9.

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