TWM531918U - Greeting system - Google Patents

Description

Welcome system

This creation is a welcome system, especially for a welcome system that uses capacitive detection to control the welcome module to perform the corresponding action.

In the past, the door sill position of the car door was not specially decorated. However, the overall aesthetics, quality, equipment and luxury of the car have changed a lot with the pursuit of taste and uniqueness. Therefore, there are many brands of cars that will have a welcome pedal at the threshold of the car door. When the car door is opened, the passenger or driver enters the car room and sees the graphics on the welcome pedal (for example, the car brand), and can feel the luxury of the car. Conventional welcome pedals mostly use plastic or stainless steel plates with the above-mentioned graphics on the surface, but the more advanced welcome pedals use magnetic clasp switches, infrared switches or ultrasonic switches to sense the opening or closing of the car door to control the lamp body (such as lighting). A light or a light emitting diode, etc.) displays a graphic.

In the structure controlled by the magnetic clasp switch, since the magnet is disposed in the door of the automobile, the welcome pedal is a threshold position which is revealed after the door of the automobile is opened, and the two are switched by the magnetic induction, and the magnetic clasp switch is The power is saved, but the magnet is not easily attached to the position of the magnetic switch, and is misaligned, which causes the sensor to be out of alignment. Furthermore, in the structure controlled by the infrared switch or the ultrasonic switch, since the infrared switch or the ultrasonic switch consumes a large amount of power, it is necessary to supply power by connecting the vehicle power supply, thereby deriving a configuration wire to connect the welcome pedal and Configuration and installation of the vehicle power supply, safety and aesthetics of the wiring.

The present invention provides a welcome system including a capacitive sensing point, a capacitive detecting module, a microcontroller, and a welcome module. The capacitive sensing module is coupled to the capacitive sensing point, the microcontroller is coupled to the capacitive sensing module, and the welcome module is coupled to the microcontroller. The capacitive detection module reads the sensing count value of the capacitive sensing point in the sleep control mode, and generates a wake-up signal according to the sensing counting value, the preset sensing counting upper limit value, and the preset sensing counting lower limit value. When receiving the wake-up signal, the microcontroller enters the standard capacitance detection mode, receives the sensing count value, and generates an indication signal according to the sensing count value. The welcoming module is configured to receive the indication signal and perform a corresponding action according to the indication signal. When the microcontroller enters the standard capacitance detection mode, the microcontroller updates the preset sensing count upper limit value and the preset sensing count lower limit value of the capacitive detection module according to the sensing count value, and then enters the sleep control mode.

The present invention provides a welcome system including a capacitive sensing point, a capacitive sensing module, a microcontroller, a welcome module, and a power module. The capacitive sensing module is coupled to the capacitive sensing point, the microcontroller is coupled to the capacitive sensing module, and the welcome module is coupled to the microcontroller. The capacitive detection module, the microcontroller, and the welcome module are coupled to the power module. The capacitive detection module is used to read the sensing count value of the capacitive sensing point. The microcontroller generates an indication signal based on the sensed count value. The welcoming module is configured to receive the indication signal and perform a corresponding action according to the indication signal. The power module is used to provide driving power to the capacitive detection module, the microcontroller, and the welcome module.

In summary, the welcoming system proposed by the present embodiment can effectively solve the problem that the positioning of the related products in the switch judgment is easy to be misaligned, and further realize the low power consumption by the power-saving capacitive detection. . On the other hand, compared with the traditional car welcome pedal control device through the complex installation procedure of the car power output (12V), the welcome system can be operated only by the battery, so it can save the user's installation time and the car modification The cost can reach the welcome function, and even solve the problem that the line is damaged and the accident is dangerous. In addition to the above, the welcome The capacitive sensing point of the system can be metal dots on a printed circuit board (PCB) to further reduce cost. In addition, the inductive sensitivity of the metal dots on the printed circuit board can be adjusted to more accurately sense whether an object is approaching or moving away.

In order to further understand the features and technical contents of this creation, please refer to the following detailed description and drawings of this creation, but these descriptions and drawings are only used to illustrate this creation, not the right to this creation. The scope is subject to any restrictions.

1‧‧‧ Welcome System

11‧‧‧Capacitive detection module

12‧‧‧Microcontroller

13‧‧‧ Welcome Module

14‧‧‧Power Module

S1‧‧‧ Capacitive sensing point

111‧‧‧Capacitance sensor

112‧‧‧Detected event judger

1111‧‧‧Capacitive sensing unit

1112‧‧‧Induction count value storage unit

1121‧‧‧Comparative unit

1122‧‧‧Wake unit

1123‧‧‧Upper limit storage unit

1124‧‧‧ Lower limit storage unit

2‧‧‧Car

3‧‧‧ Building entrances and exits

20‧‧‧ car door

21‧‧‧Bottom sheet metal

31‧‧‧ gate

A‧‧‧Lighting area

S201~S208, S301~S310‧‧‧ actuation process

1 is a block diagram of a welcome system of the present embodiment.

2A is an internal block diagram of a capacitive sensing module of the present embodiment.

2B is a detailed block diagram of the capacitance value sensor and the event determiner to be detected in the present embodiment.

Figure 3 is a flow chart of the operation of the present embodiment.

FIG. 4 is a schematic diagram of the application of the welcome system of the present embodiment as a welcome pedal of a car.

FIG. 5A is a flow chart of the operation of the welcoming system of the present embodiment when the vehicle door is opened.

FIG. 5B is a flow chart of the operation of the welcoming system of the present embodiment when the vehicle door is closed.

FIG. 6 is a schematic diagram of the application of the welcome system of the present embodiment as a welcome door of a building.

Various illustrative embodiments are described more fully hereinafter with reference to the accompanying drawings. However, the inventive concept may be embodied in many different forms and should not be construed as being limited to the illustrative embodiments set forth herein. Rather, these exemplary embodiments are provided so that this description will be thorough and complete, and the scope of the inventive concept will be fully conveyed to those skilled in the art. In the In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity. Similar numbers always indicate similar components.

The welcoming system of the present embodiment detects the capacitance value of the capacitive sensing point through the capacitive detecting module as a control for starting or closing. The capacitive detection module wakes up the microcontroller by detecting a change in the capacitance value of the capacitive sensing point, so that the microcontroller controls the welcome module. The details of the welcoming system of this creation and its actions will be further explained in the following.

Please refer to FIG. 1. FIG. 1 is a block diagram of a welcome system of the present embodiment. The welcoming system 1 includes a capacitive sensing point S1, a capacitive detecting module 11, a microcontroller 12, a welcoming module 13, and a power module 14. The capacitive sensing module 11 is coupled to the capacitive sensing point S1, the microcontroller 12 is coupled to the capacitive sensing module 11 , and the welcome module 13 is coupled to the microcontroller 12 . In addition, the capacitive detection module 11 , the microcontroller 12 , and the welcome module 13 are coupled to the power module 14 .

In the present embodiment, the capacitive sensing point S1 is a copper foil connected to the capacitive detecting module 11. However, other metal conductors may be substituted in other embodiments, and the present invention does not limit the capacitive sensing point S1. It is also worth mentioning that the capacitive sensing point S1 of the present embodiment can be further coupled to a metal piece or a transparent conductor plate according to the manufacturer or the user to form a capacitive sensing area, thereby improving the sense of the capacitive detecting module 11 Measuring range. For example, when the manufacturer of the Welcome System 1 is manufacturing, it is usually made of a metal casing or a transparent conductor plate to form a casing having various shapes. Therefore, the manufacturer can connect the capacitive sensing point S1 to the outer casing of the welcome system 1, so that the welcome system 1 can form the capacitive sensing area of the entire outer casing, and improve the detection range of the capacitive detecting module 11. In addition, the above-mentioned capacitive sensing point S1 itself may be a metal material or a transparent conductor plate in the outer casing.

More specifically, the capacitive detection module 11 continuously detects the signal transmitted by the capacitive sensing point S1 to read the sensing count value, and the sensing count value is the time or number of times the capacitive sensing point S1 is charged (or discharged). . The sensing count value can represent the capacitance value information of the capacitive sensing point S1. In other words, the sensing counting value has a capacitance sensing point S1 nearby. Information on whether there is a change in the environment. In the sleep control mode, the capacitive detection module 11 determines whether the sensed count value is greater than a preset sense count upper limit value or less than a preset sense count lower limit value, that is, whether an event to be detected occurs (ie, is suspected) The door is opened or closed). When the sense count value is greater than the preset sense count upper limit value or less than the preset sense count lower limit value (another application may also be reversely defined as when the count value falls within the preset sense count upper and lower limit values) The capacitive detection module 11 generates a wake-up signal to the microcontroller 12 to wake up the microcontroller 12 and bring the welcome system 1 into the standard capacitance detection mode. In addition, the capacitive detection module 11 transmits the sensed count value to the microcontroller 12 only in the standard capacitance detection mode.

The microcontroller 12 is in the sleep control mode for most of the time, and only the event to be detected will enter the standard capacitance detection mode, that is, the majority of the time of the microcontroller 12 is the power-saving sleep state, and only a small amount. Part of the time is the standard capacitance detection mode (so it is very power efficient). After the microcontroller 12 enters the standard capacitance detection mode, it receives the sensing count value of the capacitive sensing point S1 read by the capacitive detecting module 11, and calculates the current capacitive sensing point S1 according to the sensing counting value. The sensing count upper limit value and the preset sensing count lower limit value, and the preset sensing count upper limit value and the preset sensing count lower limit value of the capacitive sensing point S1 are stored in the capacitive detecting module 11 The capacitive detection module 11 is used as a reference for determining whether there is an event to be detected in the subsequent sleep control mode. In addition, the microcontroller 12 further determines the environmental change according to the sensing count value of the capacitive sensing point S1 in the standard capacitance detecting mode, and generates a corresponding indication signal accordingly. After the microcontroller 12 calculates the preset sensing count upper limit value of the capacitive sensing point S1 and the preset sensing counting lower limit value, and generates a corresponding indication signal, the microcontroller 12 enters the sleep control mode (ie, enters Power saving sleep state).

Please note that the capacitive detection module 11 cannot accurately determine the occurrence of the event to be detected because the capacitive sensing point S1 senses environmental changes or malfunction caused by noise, interference, etc., so it is to be detected. When an event occurs, the microcontroller 12 needs to be woken up and further perform standard capacitance detection on the capacitive sensing point S1. When the microcontroller 12 It is judged that the capacitive sensing point S1 senses an environmental change, and the microcontroller 12 generates an indication signal to the back end circuit of the welcome system 1. If the event to be detected is caused by noise or interference, the microcontroller 12 will then enter the sleep control mode again.

The welcome module 13 is controlled by the indication signal of the microcontroller 12. That is to say, when the welcome module 13 receives the indication signal generated by the microcontroller 12, it activates or deactivates the function. In the present embodiment, the welcoming module 13 can be a light and shadow module, and/or a sound module, or other special effects modules (such as dry ice, smoke output modules, etc.). In addition, the power module 14 is used to provide the driving power of the internal components of the welcome system 1 and the components or modules connected thereto. In other words, the power module 14 provides the driving power of the capacitive detection module 11, the microcontroller 12, and the welcome module 13. In the present embodiment, the power module 14 provides a driving power of a driving voltage of 3 volts (for example, a mercury battery) to the welcoming module 13, and transmits the capacitive sensing module 11 to detect the sensing count value. The detection method can achieve low power consumption. However, the power module 14 can also provide different voltages to the capacitive detection module 11 or the microcontroller 12. In other words, the welcoming system 1 of the present embodiment can consume only less than or equal to 5 microamperes (5 μA) of current. It is worth mentioning that the present invention also enters the standard capacitance detection mode, that is, the majority of the time of the microcontroller 12, when the microcontroller 12 detects the event in the capacitive detection module 11. It is a power-saving sleep state that is extremely power-saving, and only a small part of the time is the standard capacitance detection mode, so it is enough to reduce power consumption.

Next, the details of the capacitive detection module 11 will be further described. The capacitive detection module 11 is configured to detect the sensed value of the capacitive sensing point S1 to generate a wake-up signal to the microcontroller 12. Please refer to FIG. 1 and FIG. 2A simultaneously. FIG. 2A is an internal block diagram of the capacitive detecting module 11 of the present embodiment. The capacitive detection module 11 includes a capacitance value sensor 111 and an event determiner 112 to be detected. The capacitance value sensor 111 is coupled to the capacitance sensing point S1, and the event detector 112 to be detected is coupled to the capacitance value sensor 111. The microcontroller 12 is coupled to the capacitance value sensor 111 and the event to be detected Judger 112.

More specifically, the capacitance value sensor 111 is used to read and record the sensed value of the capacitive sensing point S1. The capacitance value sensor 111 transmits the sensed count value to the microcontroller 12 in the standard capacitance detection mode, and transmits the sensed count value to the event to be detected 112 in the sleep control mode. The microcontroller 12 receives the sensed count value in the standard capacitance detection mode, and does not receive the sensed count value in the sleep control mode. The to-be-detected event determiner 112 does not receive the sensed count value in the standard capacitance detection mode, but only receives the sensed count value in the sleep control mode.

The to-be-detected event determiner 112 receives and presets the sensing count upper limit value and the preset sensing count lower limit value of the capacitive sensing point S1 calculated by the recording micro control 12 according to the sensing count value in the standard capacitance detecting mode. In the sleep control mode, it is determined whether the sensing count value from the capacitive sensing point S1 is greater than the preset sensing counting upper limit value of the capacitive sensing point S1, or the sensing count value from the capacitive sensing point S1 is smaller than the capacitive sensing point. The preset sensing lower limit value of S1, that is, the comparison sensing count value and the preset sensing counting upper limit value, and the comparison sensing counting value and the preset sensing counting lower limit value. If the sensing count value is greater than the preset sensing count upper limit value of the capacitive sensing point S1 or less than the sensing sensing lower limit value preset by the capacitive sensing point S1 (the other application may also be inversely defined as when the counting value of the capacitive sensing point S1 falls When the preset sensing count is within the upper and lower limits, the event detector 112 to be detected generates a wake-up signal to the microcontroller 12 to wake up the microcontroller 12, so that the welcome system 1 enters the standard capacitance detection from the sleep control mode. Measurement mode.

Please note that in another application, the capacitive detection module 11 determines whether the sensing count value is less than a preset sensing count upper limit value or greater than a preset sensing count lower limit value in the sleep control mode. It is determined whether the to-be-detected event determiner 112 generates a wake-up signal to the microcontroller 12. In this application, if the sensing count value of the previous capacitive sensing point S1 is greater than the preset sensing counting upper limit value, and the current sensing sensing value of the capacitive sensing point S1 is less than the preset sensing counting upper limit value, then The external environment has changed; or, if the previous capacitive sensing point S1 has a smaller sensing count value The preset sensing count lower limit value, and the current sensing value of the capacitive sensing point S1 is greater than the preset sensing counting lower limit value, indicating that the external environment has changed. Briefly, the capacitive detection module 11 determines whether to use the preset sensing count upper limit value or pre-determined according to whether the previous sensing count value is greater than a preset sensing counting upper limit value or less than a preset sensing counting lower limit value. The sense count lower limit value is compared with the current sense count value to determine whether an event to be detected occurs.

Optionally, in order to avoid the preset inductive count upper limit value and the preset inductive count lower limit value may be inappropriate (such as indoor and outdoor, or day and night ... and other external environment changes), and a malfunction occurs, The event detection module 112 can generate a wake-up signal according to whether the sensing count value is greater than the preset sensing count upper limit value of the capacitive sensing point S1 or less than the sensing sensing lower limit value preset by the capacitive sensing point S1. A wake-up signal is generated at intervals, for example 5 seconds, to wake up the microcontroller 12 periodically. Then, after performing a standard capacitance detection on the capacitive sensing point S1, the microcontroller 12 calculates the preset sensing count upper limit value and the preset sensing counting lower limit value of the latest capacitive sensing point S1, and generates corresponding After the indication signal, the microcontroller 12 enters the sleep control mode, that is, returns to the power-saving sleep state.

Next, details of the capacitance value sensor 111 and the event determiner 112 to be detected will be further described. Please refer to FIG. 2B. FIG. 2B is a detailed block diagram of the capacitance value sensor 111 and the event determiner 112 to be detected in the present embodiment. The capacitance value sensor 111 includes a capacitance sensing unit 1111 and a sensing count value storage unit 1112. The capacitance sensing unit 1111 is electrically connected to the capacitive sensing point S1 and the sensing count value storage unit 1112, and the sensing count value storage unit 1112 is electrically connected to the micro control. 12 The event to be detected 112 includes a comparison unit 1121, a waking unit 1122, an upper limit value storage unit 1123 and a lower limit value storage unit 1124, wherein the comparison unit 1121 is electrically connected to the sensing count value unit 1112, the awake unit 1122, and the upper limit value. The storage unit 1123 and the lower limit storage unit 1124, and the wakeup unit 1122, the upper limit storage unit 1123 and the lower limit storage unit 1124 are electrically connected to the microcontroller 12.

The capacitance sensing unit 1111 is configured to read the sensing count value of the capacitive sensing point S1. Enter In one step, the capacitance sensing unit 1111 has a counter that can count the charging and discharging time or the number of times of the capacitive sensing point S1 to read the sensing count value. The sense count value storage unit 1112 is configured to store the sense count value, and the sense count value is transmitted to the microcontroller 12 in the standard capacitance detection mode, or the sense count value is transmitted to the comparison unit 1121 in the sleep control mode.

The comparing unit 1121 compares the sensing count value of the capacitive sensing point S1 with the pre-stored sensing counting upper limit value in the sleep control mode, and compares the sensing count value of the capacitive sensing point S1 with the pre-stored sensing counting lower limit value to determine Whether the sensing count value of the capacitive sensing point S1 is greater than the preset sensing counting upper limit value or less than the preset sensing counting lower limit value. Another application may also be defined as whether the sensing sensing value of the capacitive sensing point S1 is smaller than a preset value. The upper limit of the sense count (if the previous sense count value is greater than the preset sense count upper limit value) or greater than the preset sense count lower limit value (if the previous sense count value is less than the preset sense count lower limit value). When the sensing count value of the capacitive sensing point S1 is greater than the preset sensing counting upper limit value or less than the preset sensing counting lower limit value, another application may also be inversely defined as when the sensing count value of the capacitive sensing point S1 falls. When the preset sensing count is within the upper and lower limits, another application may also define that the sensing count value of the capacitive sensing point S1 is less than the preset sensing counting upper limit value (if the previous sensing counting value is greater than the preset sensing count value) The limit unit) is greater than the preset sense count lower limit value (if the previous sense count value is less than the preset sense count lower limit value), the comparison unit 1121 outputs a comparison result to the wake-up unit 1122. The waking unit 1122 is configured to generate a wake-up signal according to the comparison result, and as described above, it can selectively generate the wake-up signal at intervals. The upper limit value storage unit 1123 and the lower limit value storage unit 1124 transmit the stored preset sense count upper limit value and the preset sense count lower limit value to the comparison unit 1121 in the sleep control mode, and in the standard capacitance detection In the measurement mode, the new preset sensing count upper limit value and the preset sensing count lower limit value calculated by the microcontroller 12 are respectively stored.

Next, please refer to FIG. 2A (or FIG. 2B) and FIG. 3 at the same time. FIG. 3 is a flow chart of the operation of the present embodiment. The actuation process of Figure 3 can be performed in the welcome system 1 of Figure 1. Among them. First, in step S201, the microcontroller 12 controls the welcome system 1 to enter the standard capacitance detecting mode. Next, in step S202, the capacitance value sensor 111 reads and senses the sensed value of the capacitive sensing point S1. Then, in step S203, the microcontroller 12 receives the sensing count value of the capacitive sensing point S1 through the capacitance value sensor 111, and calculates the preset sensing upper limit value of the capacitive sensing point S1 and the preset sensing count. The limit value, and the change of the external environment according to the sensed count value, to generate an indication signal correspondingly. Then, in step S204, the to-be-detected event determiner 112 receives the preset sensing count upper limit value and the preset sensing count lower limit value preset with the capacitive sensing point S1 calculated by the recording microcontroller 12.

Since the microcontroller 12 has performed a standard capacitance detection on the capacitive sensing point S1, then in step S205, the microcontroller 12 controls the welcome system 1 to enter the sleep control mode. Then, in step S206, the capacitance value sensor 111 reads and senses the sensed value of the capacitive sensing point S1. Next, in step S207, the event to be detected 112 determines whether the sensed value of the capacitive sensing point S1 is greater than the preset sensing upper limit value of the capacitive sensing point S1 or less than the sensing count preset by the capacitive sensing point S1. The limit value (the other application can also be defined in reverse when the sensing count value of the capacitive sensing point S1 falls within the preset sensing count upper and lower limits, and another application can also be defined as the sensing count value of the capacitive sensing point S1. Whether it is less than the preset sensing count upper limit value (if the previous sensing counting value is greater than the preset sensing counting upper limit value) or greater than the preset sensing counting lower limit value (if the previous sensing counting value is less than the preset sensing counting lower limit) Value)). If the sensing count value of the capacitive sensing point S1 is greater than the preset sensing count upper limit value of the capacitive sensing point S1 or less than the sensing sensing lower limit value preset by the capacitive sensing point S1 (the other application may also be inversely defined as the capacitive sensing point) When the sensing count value of S1 falls within the preset sensing count upper and lower limits, another application may also be defined as when the sensing count value of the capacitive sensing point S1 is less than the preset sensing counting upper limit value (if the previous sensing counting value is If the preset sensing count upper limit value is greater than the preset sensing count lower limit value (if the previous sensing counting value is less than the preset sensing counting lower limit value), then step S208 is performed, otherwise, the step is S206 is executed again, that is, again The sensing count value of the capacitive sensing point S1 is read and recorded. In step S208, the event to be detected 112 determines that the wake-up signal is sent to the microcontroller 12, and then step S201 is executed to cause the welcome system 1 to return to the standard capacitance detection mode again.

Briefly, by determining whether the sensing count value of the capacitive sensing point S1 is greater than the preset sensing count upper limit value of the capacitive sensing point S1 or less than the sensing sensing lower limit value preset by the capacitive sensing point S1 (another application may also reverse It is defined that when the sensing count value of the capacitive sensing point S1 falls within the preset sensing counting upper and lower limits, another application may also be defined as whether the sensing counting value of the capacitive sensing point S1 is less than a preset sensing counting upper limit value. (if the previous sense count value is greater than the preset sense count upper limit value) or greater than the preset sense count lower limit value (if the previous sense count value is less than the preset sense count lower limit value), to know whether the external environment is Change. The microcontroller 12 is only awake when there is a change in the external environment. Therefore, the power consumption and/or the amount of calculation of the microcontroller 12 can be effectively saved, so that the purpose of energy saving can be achieved.

Please refer to FIG. 4. FIG. 4 is a schematic diagram of the application of the present embodiment to a welcome pedal of a car. FIG. 4 shows that the welcome control module 1 of the present embodiment is applied to the welcome pedal of the automobile door 20 corresponding to the automobile 2 to open or close the welcome system 1 according to whether the vehicle door 20 is opened or closed.

Next, please refer to FIG. 2B, FIG. 4, FIG. 5A and FIG. 5B. FIG. 5A and FIG. 5B are flowcharts showing the operation of the welcoming system of the present embodiment when the vehicle door is opened and closed. In step S301, when the bottom plate gold 21 of the automobile door 20 approaches the capacitive sensing point S1 of the welcoming system 1 disposed on the threshold of the automobile door 20, the capacitance value sensor 111 senses. The sensed count value is between the preset sense count upper limit value and the preset sense count lower limit value. (Note here, the welcome system 1 has been tested in the standard capacitance detection mode and calculated for use. Determine the preset sensing count upper limit value and the preset sensing count lower limit value). Further, the capacitance value sensor 111 continuously reads the sensing count value of the capacitive sensing point S1, and determines whether the sensing count value received by the capacitance value sensor 111 is between the preset sensing count through the event detector 112 to be detected. Upper limit and preset The sense count is in the middle of the lower limit. If the event to be detected 112 determines that the sensing count value of the capacitive sensing point S1 is between the preset sensing count upper limit value and the preset sensing counting lower limit value, the process proceeds to step S301 for reading; If the to-be-detected event determiner 112 determines that the sensed count value received by the capacitance value sensor 111 exceeds the preset sense count upper limit value and the preset sense count lower limit value, the process proceeds to step S302.

In step S302, when the to-be-detected event determiner 112 determines that the sensing count value of the capacitive sensing point S1 exceeds the preset sensing count upper limit value and the preset sensing counting lower limit value, the to-be-detected event determiner 112 transmits The wake-up unit 1122 generates a wake-up signal to cause the microcontroller 12 to enter the standard capacitance detection mode from the sleep control mode. In other words, when the event to be detected 112 determines that the sensing count value of the capacitive sensing point S1 exceeds the preset sensing count upper limit value and the preset sensing counting lower limit value, it indicates that the automobile door 21 is opened by the closed state. When the bottom sheet metal 21 starts to move away from the capacitive sensing point S1 of the welcome system 1 disposed on the welcome pedal (or because of external environment changes, such as interference caused by indoor and outdoor, nighttime, climate change, etc.), the waking unit 1122 generates The wake-up signal activates the microcontroller 12 to cause the microcontroller 12 to enter the standard capacitance detection mode and control other related modules or associated numerical operations.

In step S303, after the microcontroller 12 enters the standard capacitance detection mode from the sleep control mode, the capacitance value sensor 111 reads the sensing count value of the capacitive sensing point S1 of the automobile door 20 at this time and provides the micro control. 12 The microcontroller 12 determines whether the sensing count value of the capacitive sensing point S1 is actually between the preset sensing counting upper limit value and the preset sensing counting lower limit value. If yes, it indicates that only the interference signal is performed, and then execution is performed. Step S304b; if not, it means that the car door 20 is opened, and then step S304a is executed.

In step S304a, the microcontroller 12 generates an on signal corresponding to the opening of the welcoming module 13 to emit a welcoming effect of light and/or sound. Next, step S304b is performed.

In step S304b, the microcontroller 12 receives the sensor of the capacitive sensing point S1. The value is calculated, and the preset sensing upper limit value preset by the capacitive sensing point S1 and the preset sensing counting lower limit value are recalculated and updated accordingly. Next, step S305 is performed.

In step S305, after the microcontroller 12 finishes recalculating and updating the determination range corresponding to the sensed count value in the standard capacitance detection mode, it enters the sleep control mode again, and executes step S306 to wait for the next event to be detected. The wake-up signal of the device 112 activates it.

In step S306 (please refer to FIG. 5B), if the event detector 112 to be detected determines that the sensing count value of the capacitive sensing point S1 is between the updated preset sensing count upper limit value and the preset sensing count value, In the range of the limit, the detection is continued in step S306. On the other hand, if the event detector 112 to be detected determines that the sensed value received by the capacitance value sensor 111 exceeds the updated preset limit of the sensed count. When it is between the preset sense count lower limit value, the flow proceeds to step S307. However, the steps of the subsequent steps S308-310 are substantially the same as the steps S303-305, except that the indication signal generated by the microcontroller 12 is a shutdown signal in step S309a, and the opening of the welcome module 13 is turned off. The rest will not be repeated here.

Please refer to FIG. 2B and FIG. 6 at the same time. FIG. 6 is a schematic diagram of the application of the present invention in the building welcome door. Similarly, the welcoming system 1 of the present embodiment can also be applied to a building entrance 3 of a building (for example, a convenience store, a restaurant, a home, etc.). More specifically, when the gate 31 (for example, a metal gate) is normally closed, the capacitance value sensor 111 of the welcoming system 1 senses the sensing count value of the capacitive sensing point S1 at a preset sensing count upper limit value and a preset value. Set the sensing count to the lower limit value. If the event to be detected 112 determines that the sensing count value of the capacitive sensing point S1 is between the preset sensing count upper limit value and the preset sensing counting lower limit value, the reading and recording are continued; If the event to be detected 112 determines that the sensed value received by the capacitance value sensor 111 exceeds the preset sense count upper limit value and the preset sense count lower limit value, the event to be detected 112 passes through The wake-up unit 1122 generates a wake-up signal to cause the microcontroller 12 to enter the standard capacitance detection mode from the sleep control mode.

Similarly, in the standard capacitance detection mode, the microcontroller 12 reads the sensing count value of the capacitive sensing point S1 when the gate 31 is opened through the capacitance value sensor 111, thereby recalculating and updating the gate 31 away from the welcome system 1 The capacitance sensing point S1 presets the sensing count upper limit value and the preset sensing count lower limit value. At the same time, the microcontroller 12 determines that the gate 31 is open, and generates an open signal corresponding to the opening of the welcome module 13.

After the microcontroller 12 recalculates and updates the judgment range corresponding to the sensed count value in the standard capacitance detection mode and generates the command signal (the above-mentioned open signal), it enters the sleep control mode again, waiting for the next to be detected. The wake-up signal of the event determiner 112 activates it.

As with the application of the car door and the welcome pedal of FIG. 4, when the gate 31 or the car door 20 is opened, the welcoming system 1 also waits for the wake-up signal generated by the capacitive detection module 11 to wake up the microcontroller 12 to enter the standard capacitance detection. The mode performs the recalculation of the sensing count value judgment range and correspondingly generates a command signal (for example, an on or off signal), and then enters the sleep control mode again to save power consumption.

In summary, the welcoming system proposed by the present embodiment can effectively solve the problem that the positioning of the related products in the switch judgment is easily misaligned, and further saves the power of the capacitive detection and the microcontroller. Achieve low power consumption. On the other hand, compared to the conventional car welcoming system, the welcoming system is capable of operating only with a battery through a complicated installation procedure of the vehicle power output (12V). That is to say, the welcoming system of the present embodiment replaces the old transmitting and receiving sensing elements that need to be matched with infrared, ultrasonic, and magnetic buckle sensing in the market, and in addition to reducing the cost, the complicated professional is also required to carry out the body pulling. installation. Therefore, the welcoming system can save the user's installation time and the cost of the vehicle installation and the risk of avoiding the fire of the line, and can achieve the welcome function. Furthermore, this creation is a post-installation type of welcome system that can be easily adapted to the user's preferences whether it is installed or replaced.

It is worth mentioning that the capacitive sensing point of the welcome system can be a metal point on the PCB, which further reduces the cost. In addition, the metal points on the printed circuit board The sensing sensitivity can be adjusted to more accurately sense if an object is approaching or moving away.

In addition, when the creation is installed on the door or window of a building, it can also be used as an anti-theft device; that is, when the door and window are opened, the welcome system will respond to the action to achieve the warning effect.

The above description is only a specific embodiment of the present invention, but the features of the present invention are not limited thereto, and any change or modification that can be easily considered by those skilled in the art can be covered. The scope of the patent in this case below.

1‧‧‧ Welcome System

11‧‧‧Capacitive detection module

12‧‧‧Microcontroller

13‧‧‧ Welcome Module

14‧‧‧Power Module

S1‧‧‧ Capacitive sensing point

Claims (9)

A welcoming system includes: a capacitive sensing point; a capacitive sensing module coupled to the capacitive sensing point for reading a sensing count value of the capacitive sensing point in a sleep control mode, and according to The sensing count value, a preset sensing count upper limit value, and a preset sensing count lower limit value generate a wake-up signal; a microcontroller coupled to the capacitive detecting module receives the wake-up The signal enters a standard capacitance detection mode, receives the sensing count value, and generates an indication signal according to the sensing count value; and a welcome module coupled to the microcontroller for receiving the indication signal, and Performing a corresponding action according to the indication signal; a power module coupled to the capacitive detection module, the microcontroller, and the welcoming module for providing a driving power supply to the capacitive detection module, The microcontroller and the welcoming module; wherein when the microcontroller enters the standard capacitance detection mode, the microcontroller updates the upper limit of the sensing count preset by the capacitive detection module according to the sensing count value Under the sensing count with a preset limit, then the microcontroller enters the sleep mode control. The welcoming system of claim 1, wherein the capacitive sensing module further comprises: a capacitance value sensor coupled to the capacitive sensing point for reading the sensing count value of the capacitive sensing point; And a to-be-detected event determiner coupled to the capacitance value sensor and the microcontroller for receiving the sensing count value in the sleep control mode, and according to the sensing count value, the preset sensing count The wake-up signal is generated by the limit value and the preset sense count lower limit value. The welcoming system of claim 2, wherein the event to be detected further comprises: a comparison unit electrically connected to the capacitance value sensor, and the sensing count value is respectively associated with the preset sensing count The limit value and the preset sense count lower limit value are compared to generate a comparison result; and a wake-up unit is electrically connected to the comparison unit and the microcontroller to generate the wake-up signal according to the comparison result, so as to Wake up the microcontroller into standard capacitance detection mode. The acknowledgment system of claim 3, wherein the event to be detected further comprises: an upper limit storage unit and a lower limit storage unit, respectively coupled to the microcontroller and the comparison unit, And storing the preset sensing count upper limit value and the preset sensing counting lower limit value. The welcoming system of claim 3, wherein the capacitive detecting module is disposed on a threshold corresponding to a car door to sense whether the car door is opened or closed. The welcoming system of claim 5, wherein when the door of the automobile is opened by closing, the bottom plate of one of the car doors is away from the capacitive sensing point disposed on the threshold, the event detector to be detected is based on The comparison result generates the wake-up signal to wake up the microcontroller to enter the standard capacitance detection mode, and the microcontroller outputs the indication signal to the welcome module according to the detection result of the standard capacitance detection mode, and the welcome mode The group responds to the actuation according to the indication signal. A welcome system as described in claim 6 wherein when the car door is opened When the bottom plate of the automobile door is closed close to the capacitive sensing point disposed on the threshold, the event detector to be detected generates the wake-up signal according to the comparison result to wake up the microcontroller to enter the standard capacitance detection. In the mode, the microcontroller outputs the indication signal to the welcoming module according to the detection result of the standard capacitance detection mode, and the welcoming module responds according to the indication signal. The welcoming system of claim 1, wherein the welcoming module is a light and shadow module and/or a sound module. The welcoming system of claim 1, wherein the capacitive sensing point is formed by a conductor, and the conductor can be a metal piece, a transparent conductor plate or a metal dot on a printed circuit board (PCB).