One-key power-on scanning circuit of household bladder scanner

Abstract

The utility model discloses a one-key power-on scanning circuit of a household bladder scanner, which comprises a button switch used for controlling the power-on state of a main control chip of the scanner, the button switch is electrically connected with a power supply through a starting circuit, the power supply is electrically connected with the main control chip through a voltage stabilizing circuit, and the main control chip is electrically connected with the button switch. The monitoring circuit is used for connecting the button switch and the main control chip and monitoring the state of the button switch, and the main control chip switches the working state of a scanning module of the scanner through an output signal of the monitoring circuit. According to the utility model, the working stability of the main control chip is ensured through the voltage stabilizing circuit, and the starting and scanning work of the scanner can be completed through the main control chip and the monitoring circuit under the condition that only one button switch is used, so that the operation of a user is greatly simplified.

Description

Technical Field

[0001] This utility model belongs to the field of control circuits for bladder scanners, and in particular relates to a one-button power-on scanning circuit for a home bladder scanner. Background Technology

[0002] With the continuous development of electronic technology, various devices (such as experimental instruments, testing systems, handheld inspection equipment, etc.) have achieved electronic automatic control, and the working power supply is controlled by a power switch to turn the power on or off.

[0003] Existing bladder scanners typically have two or more buttons on the main body to control power-on and scanning. Since home bladder scanners are relatively small, adding two buttons to the main body increases structural complexity. Furthermore, fitting two or more buttons into such a compact structure undoubtedly increases the device's complexity. This can not only increase manufacturing costs but also negatively impact the overall aesthetics and user experience. For example, an overly compact button layout may lead to user errors, while an excessive number of buttons can be inconvenient for users. Utility Model Content

[0004] One object of this invention is to solve at least the aforementioned problems and / or defects, and to provide at least the advantages described below.

[0005] To achieve these objectives and other advantages of this utility model, a one-button power-on scanning circuit for a home bladder scanner is provided, comprising: a button switch for controlling the power-on state of the scanner's active chip, the button switch being electrically connected to a power supply via a startup circuit, the power supply being electrically connected to a main control chip via a voltage regulator circuit, and further comprising: a monitoring circuit for connecting the button switch and the main control chip and monitoring the state of the button switch, wherein the main control chip switches the operating state of the scanner's scanning module via the output signal of the monitoring circuit.

[0006] Preferably, the startup circuit includes: a P-type MOSFET I and a diode I;

[0007] The power supply is connected to the source and gate of P-type MOSFET I, respectively. The gate of P-type MOSFET I is connected to the push-button switch through diode I to form a grounded connection path. The drain of P-type MOSFET I is connected to the input terminal of the voltage regulator circuit. A resistor is provided on the connection path between the gate of P-type MOSFET I and the power supply.

[0008] Preferably, the monitoring circuit includes: an N-type MOSFET I, a current-limiting resistor I, an N-type MOSFET II, ​​a current-limiting resistor II, and a P-type MOSFET II;

[0009] The drain of the N-type MOS transistor I is connected to the gate of the P-type MOS transistor I, the source of the N-type MOS transistor I is grounded, and the gate of the N-type MOS transistor I is electrically connected to the PA9 interface of the main control chip through the current limiting resistor I.

[0010] The drain of the N-type MOS transistor II is connected to the gate of the P-type MOS transistor II, the source of the N-type MOS transistor II is grounded, the gate of the N-type MOS transistor II is electrically connected to the PD8 interface of the main control chip through the current limiting resistor II, the source of the P-type MOS transistor II is connected to the power supply, and the drain of the P-type MOS transistor II is electrically connected to the scanning module.

[0011] Preferably, the voltage regulator circuit includes: a voltage regulator chip, the IN interface and SHDN interface of the voltage regulator chip being electrically connected to the power supply, and the OUT interface of the voltage regulator chip being connected to the power input terminal of the main control chip, the PA8 interface of the main control chip, and the push-button switch, respectively.

[0012] Preferably, it also includes a pull-up resistor disposed on the connection path between the OUT interface and the PA8 interface of the voltage regulator module.

[0013] This utility model has at least the following beneficial effects: The present utility model ensures the stability of the main control chip through the voltage stabilizing circuit. At the same time, through the main control chip and the monitoring circuit, the scanner can be turned on and scanned using only a single button switch, which greatly simplifies the user's operation.

[0014] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0015] Figure 1 This is a connection block diagram of the circuit of this utility model;

[0016] Figure 2 This is the circuit diagram for the one-key power-on scanning of this utility model.

[0017] Reference numerals: 1. Power supply, 2. Start-up circuit, 3. Voltage regulator circuit, 31. Voltage regulator chip, 4. Push-button switch, 5. Main control chip, 6. Monitoring circuit, 7. Scanning module. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0019] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0020] It should be noted that in the description of this utility model, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0022] Furthermore, in this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0023] like Figure 1 The one-button power-on scanning circuit of a home bladder scanner shown includes: a button switch 4 for controlling the power-on state of the scanner's active chip, the button switch 4 being electrically connected to a power supply 1 via a startup circuit 2, the power supply 1 being electrically connected to a main control chip 5 via a voltage regulator circuit 3; and a monitoring circuit 6 for connecting the button switch 4 and the main control chip 5 and monitoring the state of the button switch 4, the main control chip 5 switching the working state of the scanner's scanning module 7 via the output signal of the monitoring circuit 6.

[0024] Working principle:

[0025] When button switch 4 is pressed, the start-up circuit 2 is triggered to supply power to the main control chip 5, which then starts working, powering on the bladder scanner. The main control chip 5 sends a signal to the start-up circuit 2 via monitoring circuit 6 to ensure its continuous operation. Even after button switch 4 springs back, power to the main control chip 5 continues. A voltage regulator circuit 3 between the start-up circuit 2 and the main control chip 5 ensures that even after prolonged operation, when the internal battery voltage drops, the main control chip 5 maintains a stable operating voltage, improving the scanner's stability and reliability. Simultaneously, when the user presses button switch 4 again, monitoring circuit 6 detects this action and sends a signal to the main control chip 5. Based on the received signal, the main control chip 5 switches the operating state of the scanning module 7 and begins scanning. When the user releases the button, the scanner stops working. After 30 seconds of inactivity, the main control chip 5 sends a signal to the start-up circuit 2 via monitoring circuit 6, causing the start-up circuit 2 to shut down and the scanner to power off. With the main control chip 5 and monitoring circuit 6, the scanner can be turned on and scanned using only one button switch 4, greatly simplifying the user's operation.

[0026] Example 1:

[0027] Figure 2 The schematic diagram of the one-key power-on scanning circuit of this utility model is shown. The power-on circuit 2 includes: a P-type MOS transistor I and a diode I.

[0028] The power supply 1 is connected to the source and gate of the P-type MOS transistor 1. The gate of the P-type MOS transistor 1 is connected to the push-button switch 4 through diode 1 to form a grounded connection path. The drain of the P-type MOS transistor 1 is connected to the input terminal of the voltage regulator circuit 3. A resistor is provided on the connection path between the gate of the P-type MOS transistor 1 and the power supply 1.

[0029] The monitoring circuit 6 includes: N-type MOSFET I, current-limiting resistor I, N-type MOSFET II, ​​current-limiting resistor II, and P-type MOSFET II;

[0030] The drain of the N-type MOS transistor I is connected to the gate of the P-type MOS transistor I, the source of the N-type MOS transistor I is grounded, and the gate of the N-type MOS transistor I is electrically connected to the PA9 interface of the main control chip 5 through the current limiting resistor I.

[0031] The drain of the N-type MOS transistor II is connected to the gate of the P-type MOS transistor II, the source of the N-type MOS transistor II is grounded, the gate of the N-type MOS transistor II is electrically connected to the PD8 interface of the main control chip 5 through the current limiting resistor II, the source of the P-type MOS transistor II is connected to the power supply 1, and the drain of the P-type MOS transistor II is electrically connected to the scanning module 7.

[0032] The voltage regulator circuit 3 includes a voltage regulator chip 31, whose IN and SHDN interfaces are electrically connected to the power supply 1, and whose OUT interface is connected to the power supply 1 input terminal of the main control chip 5, the PA8 interface of the main control chip 5, and the push button switch 4, respectively.

[0033] It also includes a pull-up resistor set on the connection path between the OUT interface and the PA8 interface of the voltage regulator chip 31.

[0034] When button switch 4 is pressed, the gate of P-type MOSFET I is grounded, and P-type MOSFET I is turned on. Power supply 1 powers on the main control chip 5 through P-type MOSFET I and voltage regulator chip 31, and the scanner is powered on. After the main control chip 5 is powered on, the PA9 interface of the main control chip 5 outputs a high level, the gate of N-type MOSFET I is at a high level, and N-type MOSFET I is turned on. P-type MOSFET I is grounded through N-type MOSFET I, so that after button switch 4 is released, P-type MOSFET I can continue to conduct, and power supply 1 can continuously supply power to the main control chip 5. After the scanner is powered on and completes various settings, the user presses button switch 4 again. The PA8 interface of the main control chip 5 is grounded to a low level. At the same time, when the PA8 interface is low, the main control chip 5 sets the output signal of the PD8 interface to a high level. The gate of the N-type MOSFET II is high, and the N-type MOSFET II is in the on state. The gate of the P-type MOSFET II is grounded to a low level through the N-type MOSFET II, ​​and the P-type MOSFET II is turned on. Power supply 1 supplies power to the scanning module 7 through the P-type MOSFET II, ​​and the scanning module 7 starts working. When the user releases button switch 4, the PA8 interface is connected to the OUT interface of the voltage regulator chip 31 at a high level. The main control chip 5 sets the output signal of the PD8 interface to a low level. The N-type MOSFET II is in the off state, and the P-type MOSFET II is also in the off state. The scanning module 7 stops working. When the main control chip 5 detects that the high level state of the PA8 interface lasts for 30 seconds, the main control chip 5 outputs a low level signal from the PA9 interface. The N-type MOSFET I is in the off state, and the gate of the P-type MOSFET I is grounded through the N-type MOSFET I. The P-type MOSFET I is turned off, and the bladder scanner is turned off.

[0035] The voltage regulator chip 31 ensures the stability of the operating voltage of the main control chip 5, while the current limiting resistors I and II ensure that the N-type MOSFET I and N-type MOSFET II can work stably and normally.

[0036] It also includes: an integrally molded flexible protrusion located on the shell of the bladder scanner and at the button switch 4. The protrusion has a cavity that is adapted to the button switch 4. The flexible protrusion and the shell of the bladder scanner are thermoformed. The material of the flexible protrusion is silicone. In the existing device buttons, there is a certain gap between them and the shell. After long-term use, a lot of dirt will accumulate in the gap, which is very inconvenient to clean. In the future use of the device, by adding a flexible protrusion to the shell, it can ensure that the switch can be used normally and at the same time prevent dust from entering.

[0037] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A one-button power-on scanning circuit for a home-use bladder scanner, comprising: A push-button switch for controlling the power-on state of the scanner's main control chip, wherein the push-button switch is electrically connected to a power supply via a startup circuit, characterized in that the power supply is electrically connected to the main control chip via a voltage regulator circuit, and further comprising: a monitoring circuit for connecting the push-button switch and the main control chip and monitoring the state of the push-button switch, wherein the main control chip switches the operating state of the scanner's scanning module via the output signal of the monitoring circuit.

2. The one-button power-on scanning circuit for a home bladder scanner according to claim 1, characterized in that, The startup circuit includes: P-type MOSFET I and diode I; The power supply is connected to the source and gate of P-type MOSFET I, respectively. The gate of P-type MOSFET I is connected to the push-button switch through diode I to form a grounded connection path. The drain of P-type MOSFET I is connected to the input terminal of the voltage regulator circuit. A resistor is provided on the connection path between the gate of P-type MOSFET I and the power supply.

3. The one-button power-on scanning circuit for a home bladder scanner according to claim 2, characterized in that, The monitoring circuit includes: N-type MOSFET I, current-limiting resistor I, N-type MOSFET II, ​​current-limiting resistor II, and P-type MOSFET II; The drain of the N-type MOS transistor I is connected to the gate of the P-type MOS transistor I, the source of the N-type MOS transistor I is grounded, and the gate of the N-type MOS transistor I is electrically connected to the PA9 interface of the main control chip through the current limiting resistor I. The drain of the N-type MOS transistor II is connected to the gate of the P-type MOS transistor II, the source of the N-type MOS transistor II is grounded, the gate of the N-type MOS transistor II is electrically connected to the PD8 interface of the main control chip through the current limiting resistor II, the source of the P-type MOS transistor II is connected to the power supply, and the drain of the P-type MOS transistor II is electrically connected to the scanning module.

4. The one-button power-on scanning circuit for a home bladder scanner according to claim 2, characterized in that, The voltage regulator circuit includes a voltage regulator chip, whose IN and SHDN interfaces are electrically connected to the power supply, and whose OUT interface is connected to the power input terminal of the main control chip, the PA8 interface of the main control chip, and the push-button switch, respectively.

5. The one-button power-on scanning circuit for a home bladder scanner according to claim 4, characterized in that, Also includes: Pull-up resistors are set on the connection path between the OUT interface and PA8 interface of the voltage regulator chip.

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