Portable pulse metering testing device

Abstract

The utility model discloses a portable pulse metering and testing device, and relates to the field of pulse metering and testing. According to the specific implementation scheme, the device comprises a main control module, a touch key module, a metering interface module and a power supply module, the main control module, the touch key module, the metering interface module and the power supply module are integrated on a PCB (Printed Circuit Board), the power supply module is electrically connected with the main control module and the metering interface module, the metering interface module is electrically connected with the main control module, and the touch key module is electrically connected with the main control module. A user can complete the running operation of the intelligent water meter module without using specific professional running equipment, and the device has the characteristics of portability and simplicity in operation, so that the cost of using the professional running equipment in a high power consumption state is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulse measurement and testing devices, in particular to a portable pulse measurement and testing device. Background Art

[0002] With the development of technology and social progress, smart water meters are gaining widespread application. To verify the stability and reliability of electronic modules, a flow test is often performed to compare mechanical readings with electronic readings. This process requires the use of specialized flow equipment such as blowers or calibration stations, which is extremely inconvenient in practice.

[0003] Existing pulse metering tests require the use of professional measurement equipment, but professional measurement equipment is fixed in position and inconvenient to operate, affecting test efficiency and test costs. Utility Model Content

[0004] Based on this, the utility model provides a portable pulse measurement and testing device to solve the problem that professional running equipment is fixed in position and inconvenient to operate.

[0005] The utility model provides a portable pulse measurement test device, comprising:

[0006] Main control module, touch button module, metering interface module and power module;

[0007] The main control module, touch button module, metering interface module and power module are integrated on a PCB board. The power module is electrically connected to the main control module and the metering interface module. The metering interface module is electrically connected to the main control module. The touch button module is electrically connected to the main control module.

[0008] The main control module includes a main control chip U1 and a download port J81. Pin 55 of the main control chip U1 is connected to pin 2 of the download port J81 through capacitor C810, pin 53 of the main control chip U1 is connected to pin 2 of the download port J81 through capacitor C87, pin 52 of the main control chip U1 is connected to pin 2 of the download port J81 through capacitor C86, pin 51 of the main control chip U1 is connected to pin 1 of the download port J81, pin 55 of the main control chip U1 is also electrically connected to pin 3 of the download port J81, and pins 56, 57, 58, 59 and 60 of the main control chip U1 are electrically connected to pins 4, 5, 6, 7 and 8 of the download port J81 respectively.

[0009] The metering interface module includes three Hall counters J31, pin 4 of the three Hall counters J31 is electrically connected to pin 4 of the main control chip U1 through a resistor R30, pin 5 of the three Hall counters J31 is electrically connected to pin 5 of the main control chip U1 through a resistor R31, and pin 6 of the three Hall counters J31 is electrically connected to pin 6 of the main control chip U1 through a resistor R32.

[0010] The metering interface module includes a dual reed switch counter J32, pin 2 of the dual reed switch counter J32 is electrically connected to pin 4 of the main control chip U1 through a resistor R33, and pin 4 of the dual reed switch counter J32 is electrically connected to pin 5 of the main control chip U1 through a resistor R34.

[0011] The touch key module includes a touch key Flash microcontroller U21, multiple resistor banks, a connector J21, and a download port J22. One end of the resistor bank is electrically connected to the touch key Flash microcontroller U21, and the other end of the resistor bank is electrically connected to the connector J21. A capacitor C21 is connected between pins 13 and 14 of the touch key Flash microcontroller U21. One end of the capacitor C21 is connected to pin 1 of the download port J22, and the other end of the capacitor C21 is grounded. One end of the capacitor C21 is also connected to pin 34 of the main control chip U1 through a resistor R21. Pin 19 of the touch key Flash microcontroller U21 is connected to the capacitor C21 through a resistor R25. 21, pin 19 of the touch-button Flash microcontroller U21 is also grounded through capacitor C22, pin 17 of the touch-button Flash microcontroller U21 is connected to one end of the capacitor C21 through resistor R24, pin 17 of the touch-button Flash microcontroller U21 is also electrically connected to pin 32 of the main control chip U1 and pin 2 of the download port J22, pin 16 of the touch-button Flash microcontroller U21 is connected to one end of the capacitor C21 through resistor R23, pin 16 of the touch-button Flash microcontroller U21 is also electrically connected to pin 33 of the main control chip U1 and pin 3 of the download port J22.

[0012] It also includes a buzzer circuit, which includes a buzzer B41, a diode D41, a diode D42, a transistor Q41, a resistor R41 and a resistor R42. Pin 51 of the main control chip U1 is also electrically connected to the positive electrode of the buzzer B41 through the diode D42, the collector of the transistor Q41 is electrically connected to the positive electrode of the buzzer B41 through the diode D41, the collector of the transistor Q41 is also electrically connected to the negative electrode of the buzzer B41, the base of the transistor Q41 is electrically connected to pin 30 of the main control chip U1 through the resistor R41, the emitter of the transistor Q41 is grounded, and the resistor R42 is also connected between the base and emitter of the transistor Q41.

[0013] It also includes a liquid crystal driver chip U3 and a display screen LCD81. The SEG0 pin to SEG26 pin of the driver chip U3 are electrically connected to the SEG0 pin to SEG26 pin of the display screen LCD81 respectively, and pins 6, 7, 8, and 9 of the driver chip U3 are electrically connected to pins 28, 29, 30, and 31 of the display screen LCD81 respectively. Pin 11 of the driver chip U3 is electrically connected to pin 51 of the main control chip U1. Pins 10, 12, 13, and 14 of the driver chip U3 are all connected to one end of capacitor C811, and the other end of the capacitor C811 is connected to pin 51 of the main control chip U1. Pins 10, 12, 13, and 14 of the driver chip U3 are also grounded. Pin 15 of the driver chip U3 is connected to pin 51 of the main control chip U1 through resistor R87, and pin 16 of the driver chip U3 is connected to pin 51 of the main control chip U1 through resistor R88.

[0014] The power module includes a main power circuit, an MCU power control circuit for stepping down the output voltage of the main power circuit, and a power detection circuit;

[0015] The main power supply circuit includes a battery input connector J11, an external power input connector J12, and a USB connector J13; pin 1 of the battery input connector J11 is connected to one end of a diode D11, the other end of the diode D11 is grounded via a capacitor C11, and the other end of the diode D11 is also electrically connected to the MCU power control circuit; pin 1 of the USB connector J13 is connected to the other end of the diode D11 via a diode D12; pins 3, 2, 1, and 2 of the USB connector J13 are respectively connected to pins 1, 4, 5, and 6 of the TVS diode U11; pin 1 of the USB connector J13 is connected to one end of a resistor R14; the other end of the resistor R14 is connected to pin 25 of the main control chip U1; pin 2 of the USB connector J13 is electrically connected to pin 28 of the main control chip U1 via a resistor R11; and pin 3 of the USB connector J13 is connected to the main control chip U1 via a resistor R11.

[0016] Pin 27 of the USB connector J13 is electrically connected to pin 29 of the main control chip U1, pin 4 of the USB connector J13 is electrically connected to pin 29 of the main control chip U1 via resistor R11, pin 5 of the USB connector J13 is grounded, pin 2 of the TVS diode U11 is grounded, pin 1 of the external power input connector J12 is connected to one end of the diode D11, VBAT is connected to pin 2 of the battery input connector J11 through diode D10, and pin 2 of the battery input connector J11 and pin 2 of the external power input connector J12 are grounded;

[0017] The MCU power control circuit includes a voltage stabilizing chip U5, wherein pins 1 and 3 of the voltage stabilizing chip U5 are connected to the other end of the diode D11, the other end of the diode D11 is also grounded through a capacitor C81, a capacitor C82 is connected in parallel with the capacitor C81, pins 1 and 2 of the voltage stabilizing chip U5 are connected to both ends of the capacitor C81, a capacitor C83 is connected in parallel with a capacitor C84, pins 4 and 5 of the voltage stabilizing chip U5 are connected to both ends of the capacitor C84, one end of the capacitor C84 is connected to pin 51 of the main control chip U1 through a resistor R81, and the other end of the capacitor C84 is grounded;

[0018] The power detection circuit includes a resistor R82, a resistor R83, a capacitor C85, a resistor R84, a resistor R85, a resistor R86, a transistor Q1, a capacitor C88 and a capacitor C89; one end of the resistor R82 is connected to pin 51 of the main control chip U1, the other end of the resistor R82 is connected to pin 46 of the main control chip U1, the other end of the resistor R82 is also grounded through the resistor R83, the two ends of the resistor R83 are connected in parallel with the capacitor C85, the transistor Q1 The collector of the transistor Q1 is connected to pin 51 of the main control chip U1 through the resistor R84, the emitter of the transistor Q1 is grounded, the base of the transistor Q1 is connected to pin 47 of the main control chip U1 through the resistor R85, and the resistor R86 is further connected between the base and emitter of the transistor Q1. The capacitor C88 and the capacitor C89 are connected in parallel, one end of the capacitor C88 is connected to pin 51 of the main control chip U1, and the other end of the capacitor C88 is grounded.

[0019] The buzzer circuit, liquid crystal driver chip U3 and display screen LCD81 are all integrated on the PCB board. The PCB board is arranged in the test device housing.

[0020] Beneficial effects: Users can complete the measurement operation of the smart water meter module without using specific professional measurement equipment, and the device is portable and easy to operate, saving the cost of using professional measurement equipment in a high power consumption state.

[0021] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to better understand the present invention and do not constitute a limitation of the present invention.

[0023] Figure 1 This is a circuit diagram of the main control module provided by the utility model;

[0024] Figure 2 This is a circuit diagram of three Hall counters provided by the utility model;

[0025] Figure 3 This is a schematic diagram of the pulse waveform of the three Hall counters provided by the utility model;

[0026] Figure 4 This is a circuit diagram of a double reed switch counter provided by the utility model;

[0027] Figure 5 This is a schematic diagram of the pulse waveform of the three Hall counters provided by the utility model;

[0028] Figure 6 This is a circuit diagram of a touch key module provided by the utility model;

[0029] Figure 7 This is a liquid crystal driver chip and display screen circuit diagram provided by the utility model;

[0030] Figure 8 This is a buzzer circuit diagram provided by the utility model;

[0031] Figure 9 This is a total power supply circuit diagram provided by the utility model;

[0032] Figure 10 This is a circuit diagram of the MCU power supply control provided by the utility model;

[0033] Figure 11 The utility model provides a power supply detection circuit diagram. DETAILED DESCRIPTION

[0034] The following description of exemplary embodiments of the present invention is made in conjunction with the accompanying drawings, which include various details of the embodiments of the present invention to facilitate understanding. These details should be considered as merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0035] The utility model provides a portable pulse measurement test device, comprising:

[0036] Main control module, touch button module, metering interface module and power module;

[0037] The main control module, touch button module, metering interface module and power module are integrated on a PCB board. The power module is electrically connected to the main control module and the metering interface module. The metering interface module is electrically connected to the main control module. The touch button module is electrically connected to the main control module.

[0038] Furthermore, integrating the main control module, touch button module, metering interface module, and power module on the PCB can simplify the overall design, reduce the need for cable connections, make the system more compact and easier to maintain, and facilitate software and hardware upgrades. Integration helps reduce the size of the equipment, making the test device more portable.

[0039] like Figure 1As shown, the main control module includes a main control chip U1 and a download port J81, pin 55 of the main control chip U1 is connected to pin 2 of the download port J81 through capacitor C810, pin 53 of the main control chip U1 is connected to pin 2 of the download port J81 through capacitor C87, pin 52 of the main control chip U1 is connected to pin 2 of the download port J81 through capacitor C86, pin 51 of the main control chip U1 is connected to pin 1 of the download port J81, pin 55 of the main control chip U1 is also electrically connected to pin 3 of the download port J81, and pins 56, 57, 58, 59 and 60 of the main control chip U1 are electrically connected to pins 4, 5, 6, 7 and 8 of the download port J81 respectively.

[0040] The main control chip U1 is the FM3316 microcontroller, which is the core of the entire test device and is responsible for processing data and controlling the touch button module and metering interface module. The main control chip U1 is electrically connected to the touch button module, metering interface module and power module through different pins.

[0041] like Figure 2 As shown, the metering interface module includes three Hall counters J31, pin 4 of the three Hall counters J31 is electrically connected to pin 4 of the main control chip U1 through a resistor R30, pin 5 of the three Hall counters J31 is electrically connected to pin 5 of the main control chip U1 through a resistor R31, and pin 6 of the three Hall counters J31 is electrically connected to pin 6 of the main control chip U1 through a resistor R32.

[0042] After the touch key module inputs the function short code of the simulated pulse start, the device will perform the measurement test according to the metering scheme configured at the beginning. The principle of measurement is as follows:

[0043] The three Hall sensors are defined as red, yellow, and blue respectively. Since the three Hall counters will trigger the three Hall components in sequence when counting a pulse, the main control chip U1 will adjust the time period of a single pulse according to the flow rate during the simulation process, and use the timer to control the chip pin output level signal to complete the measurement of one pulse through 6 intervals (these six intervals are red trigger interval - red to yellow invalid interval - yellow trigger interval - yellow to blue invalid interval - blue trigger interval - blue to red invalid interval, where the starting interval can be any of the six intervals). Figure 3In the figure, the orange portion represents the trigger waveform of a pulse of a three-Hall pulse sensor. Each line in the figure represents the output signal of three Hall elements of the three-Hall pulse sensor. When one line in the figure is pulled low, it means that one of the Hall elements of the three-Hall pulse sensor is triggered. When these three lines are pulled low in sequence, it indicates that one pulse count is completed. In the figure, x1 represents the time point of the first falling edge of the yellow waveform in the orange box, and x2 represents the time point of the second falling edge of the yellow waveform in the orange box. △x is x2-x1, which is the time of one cycle. The time of one cycle is affected by the flow rate. The greater the flow rate, the shorter the cycle time, and vice versa.

[0044] like Figure 4 As shown, the metering interface module includes a dual reed switch counter J32, pin 2 of the dual reed switch counter J32 is electrically connected to pin 4 of the main control chip U1 through a resistor R33, and pin 4 of the dual reed switch counter J32 is electrically connected to pin 5 of the main control chip U1 through a resistor R34.

[0045] Define the two reed switches as yellow and blue respectively. Since the dual reed switch counter triggers the two reed switch devices in sequence during a pulse counting cycle, the main control chip U1 adjusts the time period of a single pulse according to the flow rate during the simulation process, and uses a timer to control the chip pin output level signal to complete the measurement of one pulse through four intervals (these four intervals are yellow trigger interval - invalid interval from yellow to blue - blue trigger interval - invalid interval from blue to white, where the starting interval can be any of the four intervals, and white is the common ground line). Figure 5 In the figure, the orange portion represents the trigger waveform of a pulse from a dual reed switch pulse sensor. Each line in the figure represents the output signal of the two reed switch elements of the dual reed switch pulse sensor. When one line in the figure is pulled low, it means that one of the reed switch elements of the dual reed switch pulse sensor is triggered. When these two lines are pulled low in sequence, it indicates that a pulse count is completed. The yellow waveform represents the waveform of the reed switch during the process of sensing a changing magnetic field (when the waveform is low, the magnetic field is sensed; when the waveform is high, the magnetic field is not sensed). The blue waveform represents the waveform of the reed switch marked in blue during the process of sensing a changing magnetic field (when the waveform is low, the magnetic field is sensed; when the waveform is high, the magnetic field is not sensed).

[0046] After the measurement starts, the current measurement information will be displayed on the screen every time a pulse count is completed. The program will complete the measurement test through the pre-set number of measurement times. The function short code can also be used to control the start and stop of the simulated pulse, reconfigure the metering plan, and other operations (querying the metering plan configuration information, querying the measurement data, and reconfiguring the metering plan need to be performed in the pause or end stage, and cannot be executed when the measurement is in progress).

[0047] like Figure 6 As shown, the touch key module includes a touch key Flash microcontroller U21, multiple resistor banks, a connector J21 and a download port J22, one end of the resistor bank is electrically connected to the touch key Flash microcontroller U21, and the other end of the resistor bank is electrically connected to the connector J21. A capacitor C21 is connected between pins 13 and 14 of the touch key Flash microcontroller U21, one end of the capacitor C21 is connected to pin 1 of the download port J22, and the other end of the capacitor C21 is grounded. One end of the capacitor C21 is also connected to pin 34 of the main control chip U1 through a resistor R21, and pin 19 of the touch key Flash microcontroller U21 is connected to the capacitor C21 through a resistor R25. One end of C21, pin 19 of the touch-button Flash microcontroller U21 is also grounded through capacitor C22, pin 17 of the touch-button Flash microcontroller U21 is connected to one end of the capacitor C21 through resistor R24, pin 17 of the touch-button Flash microcontroller U21 is also electrically connected to pin 32 of the main control chip U1 and pin 2 of the download port J22, pin 16 of the touch-button Flash microcontroller U21 is connected to one end of the capacitor C21 through resistor R23, pin 16 of the touch-button Flash microcontroller U21 is also electrically connected to pin 33 of the main control chip U1 and pin 3 of the download port J22.

[0048] exist Figure 6 In the figure, RN1, RN2, and RN3 are resistor banks, model RN 0402*4. Each bank consists of four 470Ω resistors. The bank connects the touch-button Flash microcontroller U21 to connector J21. Download port J21 is used to download firmware to the touch-button Flash microcontroller U21.

[0049] The model of the touch-key Flash microcontroller U21 is BS83B12A-3. The power supply of the touch-key Flash microcontroller U21 control chip is controlled by the 34th pin PE1 of the main control chip U1 (output high means power supply, output low means power off). KEY_POWER is the power supply for downloading the touch-key chip firmware.

[0050] like Figure 7As shown, a buzzer circuit is also included, which includes a buzzer B41, a diode D41, a diode D42, a transistor Q41, a resistor R41 and a resistor R42. Pin 51 of the main control chip U1 is also electrically connected to the positive electrode of the buzzer B41 through the diode D42, the collector of the transistor Q41 is electrically connected to the positive electrode of the buzzer B41 through the diode D41, the collector of the transistor Q41 is also electrically connected to the negative electrode of the buzzer B41, the base of the transistor Q41 is electrically connected to pin 30 of the main control chip U1 through the resistor R41, the emitter of the transistor Q41 is grounded, and the resistor R42 is also connected between the base and emitter of the transistor Q41.

[0051] Diode D42 is used to prevent reverse current flow and protect other modules from the impact of reverse voltage; the function of resistors R41 and R42 is to limit the current flowing through the circuit to ensure the safe operation of the circuit; the function of transistor Q41 is to act as a switch to control the current flow to the buzzer B41. When the base receives a sufficient positive voltage, the channel from the collector to the emitter will be opened, allowing current to flow through the buzzer B41. When current flows through the buzzer B41, a sound will be emitted, which is often used for alarm or prompt tones. VMCU passes through resistor R41, the collector and emitter of transistor Q41, and then flows through resistor R42 and buzzer B41, and finally returns to GND.

[0052] like Figure 8 As shown, it also includes a liquid crystal driver chip U3 and a display screen LCD81. The SEG0 pin to SEG26 pin of the driver chip U3 are electrically connected to the SEG0 pin to SEG26 pin of the display screen LCD81 respectively, and the 6, 7, 8, and 9 pins of the driver chip U3 are electrically connected to the 28, 29, 30, and 31 pins of the display screen LCD81 respectively. The 11th pin of the driver chip U3 is electrically connected to the 51st pin of the main control chip U1. The 10th, 12th, 13th, and 14th pins of the driver chip U3 are all connected to one end of the capacitor C811, and the other end of the capacitor C811 is connected to the 51st pin of the main control chip U1. The 10th, 12th, 13th, and 14th pins of the driver chip U3 are also grounded. The 15th pin of the driver chip U3 is connected to the 51st pin of the main control chip U1 through the resistor R87, and the 16th pin of the driver chip U3 is connected to the 51st pin of the main control chip U1 through the resistor R88.

[0053] Resistors R87 and R88 are used to adjust the current level in the circuit to ensure safe and effective signal transmission.

[0054] The power module provides power to the LCD driver chip U3 and the LCD81 display. The main control chip U1 communicates with the LCD driver chip U3 via a data bus, transmitting data display and control instructions to the LCD driver chip U3. Labels such as "SEG0," "SEG1," and so on generally refer to the segment select pins on the LCD81 display. These pins are used to select and activate individual segments on the LCD81 panel to display characters. Each "SEGx" pin corresponds to an independent display segment on the LCD81 panel. By controlling the high and low levels of these pins, different characters can be combined. The driver chip U3 is BL55072A.

[0055] The power module includes a main power circuit, an MCU power control circuit for stepping down the output voltage of the main power circuit, and a power detection circuit;

[0056] like Figure 9 As shown, the main power supply circuit includes a battery input connector J11, an external power input connector J12, and a USB connector J13; pin 1 of the battery input connector J11 is connected to one end of a diode D11, the other end of the diode D11 is grounded via a capacitor C11, and the other end of the diode D11 is also electrically connected to the MCU power control circuit, pin 1 of the USB connector J13 is connected to the other end of the diode D11 via a diode D12, pins 3, 2, 1, and 2 of the USB connector J13 are connected to pins 1, 4, 5, and 6 of the TVS diode U11, respectively, pin 1 of the USB connector J13 is connected to one end of a resistor R14, and the other end of the resistor R14 is connected to pin 25 of the main control chip U1. Pins, pin 2 of the USB connector J13 is electrically connected to pin 28 of the main control chip U1 via a resistor R11, pin 3 of the USB connector J13 is electrically connected to pin 27 of the main control chip U1 via a resistor R11, pin 4 of the USB connector J13 is electrically connected to pin 29 of the main control chip U1 via a resistor R11, pin 5 of the USB connector J13 is grounded, pin 2 of the TVS diode U11 is grounded, pin 1 of the external power input connector J12 is connected to one end of the diode D11, VBAT is connected to pin 2 of the battery input connector J11 through a diode D10, and pin 2 of the battery input connector J11 and pin 2 of the external power input connector J12 are grounded;

[0057] like Figure 10As shown, the MCU power control circuit includes a voltage stabilizing chip U5, pins 1 and 3 of the voltage stabilizing chip U5 are connected to the other end of the diode D11, the other end of the diode D11 is also grounded through a capacitor C81, capacitor C82 is connected in parallel with the capacitor C81, pins 1 and 2 of the voltage stabilizing chip U5 are connected to both ends of the capacitor C81, capacitor C83 is connected in parallel with capacitor C84, pins 4 and 5 of the voltage stabilizing chip U5 are connected to both ends of the capacitor C84, one end of the capacitor C84 is connected to pin 51 of the main control chip U1 through a resistor R81, and the other end of the capacitor C84 is grounded;

[0058] The voltage regulator chip U5 is XC6217, which is a step-down regulator. Its function is to convert the 6V input voltage into a 3V output voltage. The output voltage VOUT is filtered by two capacitors C83 and C84 to remove high-frequency noise.

[0059] like Figure 11 As shown, the power detection circuit includes a resistor R82, a resistor R83, a capacitor C85, a resistor R84, a resistor R85, a resistor R86, a transistor Q1, a capacitor C88 and a capacitor C89; one end of the resistor R82 is connected to pin 51 of the main control chip U1, the other end of the resistor R82 is connected to pin 46 of the main control chip U1, the other end of the resistor R82 is also grounded through the resistor R83, and the capacitor C85 is connected in parallel at both ends of the resistor R83. The collector of the transistor Q1 is connected to pin 51 of the main control chip U1 through the resistor R84, the emitter of the transistor Q1 is grounded, the base of the transistor Q1 is connected to pin 47 of the main control chip U1 through the resistor R85, and the resistor R86 is also connected between the base and emitter of the transistor Q1. The capacitor C88 and the capacitor C89 are connected in parallel, one end of the capacitor C88 is connected to pin 51 of the main control chip U1, and the other end of the capacitor C88 is grounded.

[0060] The main power supply circuit mainly provides an interface for an external 6V power supply, which is output by VDD. VDD first goes to the buck chip in the MCU power control circuit for step-down, and then outputs it after the voltage is stepped down to 3.0V (the voltage of VMCU is 3.0V). VMCU serves as the power supply for other peripheral functions except touch buttons; the MCU power control circuit is used to step down the VDD power output, reducing it from 6V to 3V; the power detection circuit is used to detect the remaining power of the current device.

[0061] The buzzer circuit, liquid crystal driver chip U3 and display screen LCD81 are all integrated on the PCB board. The PCB board is arranged in the test device housing.

[0062] The hardware part includes the main control module, touch button module, metering interface module, power module, buzzer circuit, LCD driver chip U3 and display screen LCD81.

[0063] The software control section uses the touch buttons on the LCD screen after power-on to select the corresponding metering scheme. Different short codes are then used to implement functions such as analog pulse start and stop control, configuration information query, flow rate display, metering scheme reset, and tooling firmware version query. A buzzer and touch buttons are used to provide input prompts.

[0064] The device can be upgraded with firmware and can be iterated when new requirements and new functions exist.

[0065] In the several embodiments provided by the present invention, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is merely a logical functional division. In actual implementation, other division methods may be used. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not implemented.

[0066] The units may or may not be physically separate, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place or distributed in multiple places. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0067] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0068] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a readable storage medium. Based on this understanding, the technical solution of the embodiment of the utility model is essentially 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, which is stored in a storage medium and includes several instructions for enabling a device (which can be a single-chip microcomputer, chip, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the utility model. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0069] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention shall be covered by the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope of protection of the claims.

Claims

1. A portable pulse measurement test device, characterized in that: include: Main control module, touch button module, metering interface module and power module; The main control module, touch button module, metering interface module and power module are integrated on a PCB board. The power module is electrically connected to the main control module and the metering interface module. The metering interface module is electrically connected to the main control module. The touch button module is electrically connected to the main control module.

2. A portable pulse measurement test device according to claim 1, characterized in that: The main control module includes a main control chip U1 and a download port J81. Pin 55 of the main control chip U1 is connected to pin 2 of the download port J81 through capacitor C810, pin 53 of the main control chip U1 is connected to pin 2 of the download port J81 through capacitor C87, pin 52 of the main control chip U1 is connected to pin 2 of the download port J81 through capacitor C86, pin 51 of the main control chip U1 is connected to pin 1 of the download port J81, pin 55 of the main control chip U1 is also electrically connected to pin 3 of the download port J81, and pins 56, 57, 58, 59 and 60 of the main control chip U1 are electrically connected to pins 4, 5, 6, 7 and 8 of the download port J81 respectively.

3. A portable pulse measurement test device according to claim 2, characterized in that: The metering interface module includes three Hall counters J31, pin 4 of the three Hall counters J31 is electrically connected to pin 4 of the main control chip U1 through a resistor R30, pin 5 of the three Hall counters J31 is electrically connected to pin 5 of the main control chip U1 through a resistor R31, and pin 6 of the three Hall counters J31 is electrically connected to pin 6 of the main control chip U1 through a resistor R32.

4. A portable pulse measurement test device according to claim 2, characterized in that: The metering interface module includes a dual reed switch counter J32, pin 2 of the dual reed switch counter J32 is electrically connected to pin 4 of the main control chip U1 through a resistor R33, and pin 4 of the dual reed switch counter J32 is electrically connected to pin 5 of the main control chip U1 through a resistor R34.

5. The portable pulse measurement test device according to claim 2, characterized in that: The touch key module includes a touch key Flash microcontroller U21, multiple resistor banks, a connector J21, and a download port J22. One end of the resistor bank is electrically connected to the touch key Flash microcontroller U21, and the other end of the resistor bank is electrically connected to the connector J21. A capacitor C21 is connected between pins 13 and 14 of the touch key Flash microcontroller U21. One end of the capacitor C21 is connected to pin 1 of the download port J22, and the other end of the capacitor C21 is grounded. One end of the capacitor C21 is also connected to pin 34 of the main control chip U1 through a resistor R21. Pin 19 of the touch key Flash microcontroller U21 is connected to one end of the capacitor C21 through a resistor R25. Pin 19 of the touch key Flash microcontroller U21 is also grounded through a capacitor C22. Pin 17 of the microcontroller U21 is connected to one end of the capacitor C21 through a resistor R24. Pin 17 of the touch-button Flash microcontroller U21 is also electrically connected to pin 32 of the main control chip U1 and pin 2 of the download port J22. Pin 16 of the touch-button Flash microcontroller U21 is connected to one end of the capacitor C21 through a resistor R23. Pin 16 of the touch-button Flash microcontroller U21 is also electrically connected to pin 33 of the main control chip U1 and pin 3 of the download port J22.

6. A portable pulse measurement test device according to claim 5, characterized in that: It also includes a buzzer circuit, which includes a buzzer B41, a diode D41, a diode D42, a transistor Q41, a resistor R41 and a resistor R42. Pin 51 of the main control chip U1 is also electrically connected to the positive electrode of the buzzer B41 through the diode D42, the collector of the transistor Q41 is electrically connected to the positive electrode of the buzzer B41 through the diode D41, the collector of the transistor Q41 is also electrically connected to the negative electrode of the buzzer B41, the base of the transistor Q41 is electrically connected to pin 30 of the main control chip U1 through the resistor R41, the emitter of the transistor Q41 is grounded, and the resistor R42 is also connected between the base and emitter of the transistor Q41.

7. A portable pulse measurement test device according to claim 6, characterized in that: It also includes a liquid crystal driver chip U3 and a display screen LCD81. The SEG0 pin to SEG26 pin of the driver chip U3 are electrically connected to the SEG0 pin to SEG26 pin of the display screen LCD81 respectively, and pins 6, 7, 8, and 9 of the driver chip U3 are electrically connected to pins 28, 29, 30, and 31 of the display screen LCD81 respectively. Pin 11 of the driver chip U3 is electrically connected to pin 51 of the main control chip U1. Pins 10, 12, 13, and 14 of the driver chip U3 are all connected to one end of capacitor C811, and the other end of the capacitor C811 is connected to pin 51 of the main control chip U1. Pins 10, 12, 13, and 14 of the driver chip U3 are also grounded. Pin 15 of the driver chip U3 is connected to pin 51 of the main control chip U1 through resistor R87, and pin 16 of the driver chip U3 is connected to pin 51 of the main control chip U1 through resistor R88.

8. The portable pulse measurement test device according to claim 7, characterized in that: The power module includes a main power circuit, an MCU power control circuit for stepping down the output voltage of the main power circuit, and a power detection circuit; The main power supply circuit includes a battery input connector J11, an external power input connector J12, and a USB connector J13; pin 1 of the battery input connector J11 is connected to one end of a diode D11, the other end of the diode D11 is grounded via a capacitor C11, and the other end of the diode D11 is also electrically connected to the MCU power control circuit; pin 1 of the USB connector J13 is connected to the other end of the diode D11 via a diode D12; pins 3, 2, 1, and 2 of the USB connector J13 are connected to pins 1, 4, 5, and 6 of the TVS diode U11, respectively; pin 1 of the USB connector J13 is connected to the other end of the diode D11 via a diode D12; pins 3, 2, 1, and 2 of the USB connector J13 are connected to pins 1, 4, 5, and 6 of the TVS diode U11, respectively; and pin 1 of the USB connector J13 is connected to the other end of the diode D11 via a diode D12. Connected to one end of the resistor R14, the other end of the resistor R14 is connected to pin 25 of the main control chip U1, pin 2 of the USB connector J13 is electrically connected to pin 28 of the main control chip U1 via the resistor R11, pin 3 of the USB connector J13 is electrically connected to pin 27 of the main control chip U1 via the resistor R11, pin 4 of the USB connector J13 is electrically connected to pin 29 of the main control chip U1 via the resistor R11, pin 5 of the USB connector J13 is grounded, pin 2 of the TVS diode U11 is grounded, pin 1 of the external power input connector J12 is connected to one end of the diode D11, VBAT is connected to pin 2 of the battery input connector J11 through the diode D10, and pin 2 of the battery input connector J11 and pin 2 of the external power input connector J12 are grounded; The MCU power control circuit includes a voltage stabilizing chip U5, wherein pins 1 and 3 of the voltage stabilizing chip U5 are connected to the other end of the diode D11, the other end of the diode D11 is also grounded through a capacitor C81, a capacitor C82 is connected in parallel with the capacitor C81, pins 1 and 2 of the voltage stabilizing chip U5 are connected to both ends of the capacitor C81, a capacitor C83 is connected in parallel with a capacitor C84, pins 4 and 5 of the voltage stabilizing chip U5 are connected to both ends of the capacitor C84, one end of the capacitor C84 is connected to pin 51 of the main control chip U1 through a resistor R81, and the other end of the capacitor C84 is grounded; The power detection circuit includes a resistor R82, a resistor R83, a capacitor C85, a resistor R84, a resistor R85, a resistor R86, a transistor Q1, a capacitor C88 and a capacitor C89; one end of the resistor R82 is connected to pin 51 of the main control chip U1, the other end of the resistor R82 is connected to pin 46 of the main control chip U1, the other end of the resistor R82 is also grounded through the resistor R83, the two ends of the resistor R83 are connected in parallel with the capacitor C85, the transistor Q1 The collector of the transistor Q1 is connected to pin 51 of the main control chip U1 through the resistor R84, the emitter of the transistor Q1 is grounded, the base of the transistor Q1 is connected to pin 47 of the main control chip U1 through the resistor R85, and the resistor R86 is further connected between the base and emitter of the transistor Q1. The capacitor C88 and the capacitor C89 are connected in parallel, one end of the capacitor C88 is connected to pin 51 of the main control chip U1, and the other end of the capacitor C88 is grounded.

9. A portable pulse measurement test device according to claim 7 or 8, characterized in that: The buzzer circuit, liquid crystal driver chip U3 and display screen LCD81 are all integrated on the PCB board.

10. The portable pulse measurement test device according to claim 9, characterized in that: The PCB board is arranged in the testing device housing.

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