Switching circuit using Hall chip
By using a Hall effect chip to sense the current and determine when a button is pressed, the traditional mechanical structure is eliminated, enabling automatic control of the indicator light's on/off state. This solves the problem of easy damage to traditional switches, extends their service life, and reduces costs.
Patent Information
- Application Number
- CN202422622608.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-29
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-10-29
AI Technical Summary
Traditional dome switches are prone to damage and wear and tear during use, resulting in a short lifespan.
The system uses a Hall effect chip to detect the pressure by sensing the current, eliminating the need for a mechanical structure. The switch circuit, composed of Hall effect chip U6, chip U1, protection module, and extended linkage module, automatically detects the pressure and controls the indicator light to turn on and off.
It extends the lifespan of the switch, reduces wear and tear from pressing, enables more complex indicator light control modes, and lowers costs.
Smart Images
Figure CN223488213U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of switches, and more particularly to a switching circuit using a Hall effect chip. Background Technology
[0002] Push-button switches are widely used in homes and hotels. However, traditional dome push-button switches are prone to damage as they are used for many years and used repeatedly. Furthermore, pressing them too hard during use can cause even greater damage. Therefore, there is an urgent need to develop a switch with a longer service life. Utility Model Content
[0003] To address the problem of traditional dome switches being easily damaged by pressing, this application provides a switching circuit using a Hall effect chip.
[0004] This application provides a switching circuit using a Hall effect chip, employing the following technical solution:
[0005] A switching circuit using a Hall effect chip includes:
[0006] Hall effect sensor module, used by the user to press, outputs a high-level or low-level Hall effect signal;
[0007] The data processing module receives the Hall signal, processes the data, and outputs a control signal.
[0008] The switch indicator control module includes multiple indicator lights, receives the control signal, and illuminates the corresponding indicator lights.
[0009] By adopting the above technical solution, an induced current is generated through electromagnetic principles to determine whether there is contact pressing. This eliminates the need for mechanical structures such as microswitches in traditional dome switches, directly eliminating the wear and tear on the switch caused by pressing and greatly extending its service life.
[0010] Optionally, the Hall effect push module includes a Hall effect chip U6, the first pin VDD of the Hall effect chip U6 receives power from VCC_3V3, and the second pin VOUT of the Hall effect chip U6 outputs an SW signal as a Hall effect signal.
[0011] By adopting the above technical solution, the Hall chip U6 is used to calculate and process the induced current, thereby automatically determining whether the user has pressed the trigger, which is convenient, fast and efficient.
[0012] Optionally, the data processing module includes a chip U1, whose eleventh, twelfth, twenty-first, twenty-second, twenty-fifth, twenty-sixth, twenty-seventh, and twenty-eighth pins receive the SW signal and perform data calculations to obtain an LED signal as a control signal output.
[0013] By adopting the above technical solution, chip U1 corresponds to multiple Hall effect sensor modules, thereby calculating and processing multiple pressing signals to obtain more complex programs. For example, pressing Hall effect sensor module 1 and not pressing Hall effect sensor module 2 will light up indicator light 1 in the switch indicator control module; pressing Hall effect sensor module 2 and not pressing Hall effect sensor module 1 will light up indicator light 2 in the switch indicator control module; pressing Hall effect sensor module 1 and pressing Hall effect sensor module 2 will light up indicator light 3 in the switch indicator control module. This allows the same number of Hall effect sensor modules to operate more complex indicator light on / off modes of the switch indicator control module, reducing costs.
[0014] Optional, also includes:
[0015] A protection module is disposed between the data processing module and the switch indicator control module. The protection module receives the control signal, converts the control signal into a control voltage of a specified magnitude, and outputs the control voltage to the switch indicator control module for on / off control.
[0016] By adopting the above technical solution, the voltage of the control signal is converted by the protection module, which reduces the probability that excessive or insufficient control signal voltage will affect the on / off state of the indicator lights in the switch indicator control module. This makes the voltage and current received by the switch indicator control module more stable and improves the stability of the switch indicator control module.
[0017] Optionally, the protection module includes a transistor Q17 and a resistor R32. The base of the transistor Q17 receives the LED signal, the collector of the transistor Q17 receives the LED_B signal, the emitter of the transistor Q17 is grounded, and the emitter and base of the transistor Q17 are connected in parallel through the resistor R32.
[0018] By adopting the above technical solution, the high or low level received by the base of transistor Q17 can be used to control the on / off state between the collector and emitter, which is convenient, fast and efficient.
[0019] Optionally, the switch indicator control module includes a white LED D4, the positive terminal of which receives a VCC12V power supply, and the negative terminal of which receives the LED_B signal.
[0020] By adopting the above technical solution, the on / off state of the white light is controlled by the LED_B signal.
[0021] Optional, also includes:
[0022] An extended linkage module is used to receive the control signal output by the data processing module, process the data, and output a corresponding linkage signal to the switch indicator control module to control the corresponding indicator light of the switch indicator control module to light up.
[0023] By adopting the above technical solution and expanding the linkage module to extend the linkage of signals, for example, when the LED signal indicates that the light is on, the linkage signal indicating that the light is off is output. This can realize the lighting of the indicator light specified by the switch indicator light control module and the extinguishing of other indicator lights, thereby achieving more complex lighting and extinguishing situations.
[0024] Optionally, the expansion module includes a chip U2. The first, second, third, fourth, fifth, sixth and seventh pins of the chip U2 receive the control signal and, after data processing, output the corresponding LED_CH signal as a linkage signal through the tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth and sixteenth pins of the chip U2.
[0025] By adopting the above technical solution, the control signal is converted into the corresponding LED_CH signal through the chip U2, thereby realizing the linkage control of the switch indicator control module.
[0026] Optionally, the protection module further includes a MOSFET Q5, the gate of which receives the LED_CH signal, the source of which is grounded, and the drain of which receives the LED_F signal.
[0027] By adopting the above technical solution, the high and low levels of the base of the MOS transistor are controlled by the LED_CH signal, thereby controlling the LED_F signal and realizing signal conversion.
[0028] Optionally, the switch indicator control module also includes a yellow lamp D6, the positive terminal of which receives VCC12V power supply, and the negative terminal of which receives the LED_F signal.
[0029] By adopting the above technical solution, the yellow light is controlled to turn on and off via the LED_F signal, and the yellow light and white light are linked and controlled via the chip U2, which is convenient and quick.
[0030] In summary, this application includes at least one of the following beneficial technical effects:
[0031] 1. The elimination of pressure-induced wear and tear on the switch greatly extends its service life.
[0032] 2. It can control the on / off modes of indicator lights in more complex switch indicator light control modules, reducing costs. Attached Figure Description
[0033] Figure 1 This is a schematic diagram of an overall module of a switching circuit using a Hall chip in an embodiment of this application.
[0034] Figure 2 This is a circuit diagram of a Hall effect sensor module.
[0035] Figure 3 This is a circuit diagram of the data processing module.
[0036] Figure 4 This is a circuit diagram of the protection module.
[0037] Figure 5 This is a circuit diagram of the switch indicator light control module.
[0038] Figure 6 This is a circuit diagram of the extended linkage module.
[0039] Explanation of reference numerals in the attached diagram: 1. Hall effect sensor module; 2. Data processing module; 3. Switch indicator light control module; 4. Protection module; 5. Extension linkage module. Detailed Implementation
[0040] The following is combined with Figure 1-6 This application is described in further detail.
[0041] This application discloses a switching circuit using a Hall effect chip. (Refer to...) Figure 1 The switching circuit using a Hall effect chip includes a Hall effect pressing module 1, a data processing module 2, a switch indicator control module 3, a protection module 4, and an extended linkage module 5. The Hall effect pressing module 1 includes a Hall effect chip U6. When the Hall effect chip U6 is pressed by the user, it outputs a high or low level through electromagnetic induction, which is the Hall effect signal. This signal is then sent to the data processing module 2. The data processing module 2 processes the signal and outputs a control signal to the protection module 4 and the extended linkage module 5. The extended linkage module 5 processes the data again and outputs a linkage signal to the protection module 4. The protection module converts the control signal and the linkage signal into a control voltage of a specified voltage and outputs it to the switch indicator control module 3, thereby illuminating the specified indicator light in the switch indicator control module 3.
[0042] Reference Figure 2In this embodiment, the Hall chip U6 can be a KTH5643 Hall sensor. The Hall press module 1 also includes resistor R49, resistor R51, capacitor C20, and transient voltage suppressor TVS2. The first pin VDD of the Hall chip U6 receives power from VCC_3V3. Resistor R49 is connected in series with the second pin VOUT of the Hall chip U6 to output the SW signal as the Hall signal. The third pin GND of the Hall chip U6 is grounded. One end of resistor R51 receives power from VCC_3V3, and the other end of resistor R51 is connected in parallel between resistor R49 and the second pin VOUT of the Hall chip U6. One end of transient voltage suppressor TVS2 is connected in parallel between resistor R49 and the second pin VOUT of the Hall chip U6. One end of capacitor C20 is connected in parallel between resistor R49 and the second pin VOUT of the Hall chip U6. The other end of transient voltage suppressor TVS2 and the other end of capacitor C20 are connected in parallel and then grounded. This section describes a Hall effect push module 1, while there can be multiple Hall effect push modules 1. If there are multiple Hall effect push modules 1, the output signals are SW1 signal, SW2 signal, SW3 signal, SW4 signal, SW5 signal, SW6 signal, SW7 signal, and SW8 indicator light, respectively.
[0043] Reference Figure 3 The data processing module 2 includes a chip U1, which corresponds to multiple SW signals. The eleventh pin of chip U1 receives the SW1 signal, the twelfth pin receives the SW2 signal, the twenty-first pin receives the SW4 signal, the twenty-second pin receives the SW6 signal, the twenty-fifth pin receives the SW8 signal, the twenty-sixth pin receives the SW7 signal, the twenty-seventh pin receives the SW5 signal, and the twenty-eighth pin receives the SW3 signal. After data calculation, the LED signal is obtained and output as a control signal. If multiple protection modules 4 are subsequently corresponding, the LED signal can be divided into LED1 signal, LED2 signal, LED3 signal, LED4 signal, LED5 signal, LED6 signal, LED7 signal, and LED8 signal. The thirteenth pin of chip U1 receives the LED1 signal, the fourteenth pin receives the LED2 signal, the fifteenth pin receives the LED3 signal, the sixteenth pin receives the LED4 signal, the seventeenth pin receives the LED5 signal, the eighteenth pin receives the LED6 signal, the nineteenth pin receives the LED7 signal, and the twentieth pin receives the LED8 signal.
[0044] Reference Figure 4Protection module 4 includes transistor Q17, resistor R24, and resistor R32. Resistor R24 is connected in series with the base of transistor Q17 to receive the LED1 signal. One end of resistor R32 is connected in parallel between resistor R24 and the base of transistor Q17. The emitter of transistor Q17 is grounded, and the other end of resistor R32 is connected in parallel with the emitter of transistor Q17. The collector of transistor Q17 is electrically connected to the LED_B1 signal. The high and low levels of the LED_B1 signal are controlled by the high and low levels of the LED1 signal. This is one protection module 4. By receiving other LED2-8 signals through multiple protection modules 4, the LED_B2-8 signals can be obtained.
[0045] Reference Figure 5 The switch indicator light control module 3 includes white LEDs D4 and D5, and resistor R53. One end of resistor R53 receives VCC 12V power, and the other end of resistor R53 is electrically connected to the positive terminal of white LED D4. The negative terminal of white LED D4 is electrically connected to the positive terminal of white LED D5, and the negative terminal of white LED D5 is electrically connected to the LED_B1 signal. The high or low level of the LED_B1 signal controls the conduction or disconnection of white LEDs D4 and D5. This is one switch indicator light control module 3. Other white LEDs will correspond to the other LED_B2-8 signals, and the circuit is the same.
[0046] Reference Figure 6 The extended linkage module 5 includes chip U2. The first pin of chip U2 receives LED7 signal, the second pin receives LED6 signal, the third pin receives LED5 signal, the fourth pin receives LED4 signal, the fifth pin receives LED3 signal, the sixth pin receives LED2 signal, and the seventh pin receives LED1 signal. The tenth pin of chip U2 outputs LED_CH1 signal, the eleventh pin outputs LED_CH2 signal, the twelfth pin outputs LED_CH3 signal, the thirteenth pin outputs LED_CH4 signal, the fourteenth pin outputs LED_CH5 signal, the fifteenth pin outputs LED_CH6 signal, and the sixteenth pin outputs LED_CH7 signal as linkage signals.
[0047] Reference Figure 4 The protection module 4 also includes a MOSFET Q5 and a resistor R28. The resistor R28 is connected in series with the gate of the MOSFET Q5 to receive the LED_CH1 signal. The source of the MOSFET Q5 is grounded, and the drain of the MOSFET Q5 is electrically connected to the LED_F1 signal. The LED_CH1 signal is used to control the high or low level of the LED_F1 signal. This is one protection module 4. By receiving other LED_CH2-8 signals through multiple protection modules 4, the LED_F2-8 signal can be obtained.
[0048] Reference Figure 5The switch indicator light control module 3 includes yellow lamps D6 and D7 and resistor R54. One end of resistor R54 receives power from VCC12V_B, and the other end of resistor R54 is electrically connected to the positive terminal of yellow lamp D6. The negative terminal of yellow lamp D6 is electrically connected to the positive terminal of yellow lamp D7, and the negative terminal of yellow lamp D7 is electrically connected to the LED_F1 signal. The high or low level of the LED_F1 signal controls the conduction or disconnection of yellow lamps D6 and D7. This is one switch indicator light control module 3. Other yellow lamps will also have corresponding LED_F2-8 signals, with the same circuitry.
[0049] The implementation principle of a switching circuit using a Hall chip in this application embodiment is as follows: When the user presses the touch position corresponding to the Hall chip U6, according to the principle of magnetoelectricity, an induced current is generated by cutting the magnetic field lines. The Hall chip U6 calculates and outputs the SW1 signal through the induced current. Chip U1 receives the SW1 signal, processes it, and outputs the corresponding LED1 signal. Chip U2 receives the LED1 signal, processes it, and outputs the LED_CH1 signal. The LED1 signal is converted into the LED_B1 signal through transistor Q17. The LED_CH1 signal is converted into the LED_F1 signal through MOSFET Q5. The LED_B1 signal controls the on / off state of white lamps D4 and D5, and the LED_CH1 signal controls the on / off state of yellow lamps D6 and D7.
[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A switching circuit using a Hall effect chip, characterized in that, include: Hall effect push module (1) is used for user to press and outputs a high-level or low-level Hall effect signal; The data processing module (2) receives the Hall signal, processes the data, and outputs a control signal. The switch indicator control module (3) includes multiple indicator lights, receives the control signal and lights up the corresponding indicator lights.
2. A switching circuit using a Hall effect chip according to claim 1, characterized in that: The Hall press module (1) includes a Hall chip U6. The first pin VDD of the Hall chip U6 receives power from VCC_3V3, and the second pin VOUT of the Hall chip U6 outputs an SW signal as a Hall signal.
3. A switching circuit using a Hall effect chip according to claim 2, characterized in that: The data processing module (2) includes a chip U1. The eleventh, twelfth, twenty-first, twenty-second, twenty-fifth, twenty-sixth, twenty-seventh, and twenty-eighth pins of the chip U1 receive the SW signal and perform data calculations to obtain an LED signal as a control signal output.
4. A switching circuit using a Hall effect chip according to claim 1, characterized in that, Also includes: The protection module (4) is located between the data processing module (2) and the switch indicator control module (3). The protection module (4) receives the control signal, converts the control signal into a control voltage of a specified voltage magnitude, and outputs the control voltage to the switch indicator control module (3) for on / off control.
5. A switching circuit using a Hall effect chip according to claim 4, characterized in that: The protection module (4) includes a transistor Q17 and a resistor R32. The base of the transistor Q17 receives the LED signal, the collector of the transistor Q17 receives the LED_B signal, the emitter of the transistor Q17 is grounded, and the emitter and base of the transistor Q17 are connected in parallel through the resistor R32.
6. A switching circuit using a Hall effect chip according to claim 5, characterized in that: The switch indicator control module (3) includes a white lamp D4, the positive terminal of which receives VCC12V power supply, and the negative terminal of which receives the LED_B signal.
7. A switching circuit using a Hall effect chip according to claim 4, characterized in that, Also includes: The extended linkage module (5) is used to receive the control signal output by the data processing module (2), process the data, and output the corresponding linkage signal to the switch indicator control module (3) to control the corresponding indicator light of the switch indicator control module (3) to light up.
8. A switching circuit using a Hall effect chip according to claim 7, characterized in that: The extended linkage module (5) includes a chip U2. The first, second, third, fourth, fifth, sixth and seventh pins of the chip U2 receive the control signal and perform data processing. Then, the corresponding LED_CH signal is output as a linkage signal through the tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth and sixteenth pins of the chip U2.
9. A switching circuit using a Hall effect chip according to claim 8, characterized in that: The protection module (4) also includes a MOS transistor Q5, the gate of which receives the LED_CH signal, the source of which is grounded, and the drain of which receives the LED_F signal.
10. A switching circuit using a Hall effect chip according to claim 9, characterized in that: The switch indicator control module (3) also includes a yellow lamp D6, the positive terminal of which receives VCC12V power supply, and the negative terminal of which receives the LED_F signal.