CN105810141A - Wireless warning device for vehicle and control method thereof - Google Patents

Abstract

The invention is a wireless warning device for vehicles and a control method thereof. It is installed on a car door and includes a sensing unit, a controller, a display unit and a battery unit; when the sensing unit wirelessly senses When the door is in an open or closed state, a sensing signal will be generated to the controller and compared with a reference signal generated by the controller to output a display control signal. The display unit will The control signal is activated, and the battery unit is connected to the sensing unit, the controller and the display unit to provide the required power. Thus, it is designed to be separated from the vehicle control system and vehicle power supply to solve the problem of wired lighting equipment. This leads to problems of driving safety and time-consuming installation.

Description

Vehicle wireless warning device and control method thereof

technical field

The invention relates to a warning device and its control method, especially to a vehicle wireless warning device and its control method.

Background technique

Generally, lighting equipment is installed on the inner side or bottom edge of the vehicle door to provide lighting or warning effects. For details, please refer to FIG. 15 and FIG. The wired lighting device 3 is installed on an inner side of a car door (as shown in FIG. 15 ) for use. The wired lighting device 3 has a wire 31 and a device body (as shown in FIG. 16 ) including a plurality of light emitting elements 32 , and the wire 31 is electrically connected to a vehicle control system and a vehicle power supply.

When the driver or the occupant opens the door, since the vehicle control system detects that the door is in an open state, the vehicle control system will output a signal to control the light emitting elements 32 to emit light through the wire 31 to warn the rear. Pay attention to vehicles or pedestrians.

However, since the wired lighting device 3 is directly electrically connected to the vehicle control system and the vehicle power supply through the wire 31, once the wired lighting device 3 is short-circuited due to the aging failure of the light-emitting elements 32, or is subject to electromagnetic interference As a result, the wired lighting device 3 generates an unexpected signal. In this way, not only the wired lighting device 3 is vulnerable to damage, but further, if the wired lighting device 3 is short-circuited due to the aging of the light-emitting elements 32, it will Seriously affect the circuit system in the car, and cause the risk of endangering driving safety.

Furthermore, since the wired lighting device 3 is connected to the vehicle control system and the vehicle power supply through the wire 31, the impedance value of the general wire is not only inversely proportional to the square of the wire diameter, but also proportional to the length of the wire diameter. The value will directly affect the vehicle control system and vehicle power supply. Therefore, during installation, careful consideration should be given to the wiring method of the wires to accurately calculate the impedance value that the vehicle control system and vehicle power supply can afford.

However, since the interior design of the vehicle must also take into account aesthetics in addition to safety, when the wire is actually installed in the vehicle, the actual impedance value will be different from the preset impedance value, and the impedance value may be too large For the vehicle control system and the vehicle power supply, the impedance value of the wired lighting equipment is different from the preset impedance value. Therefore, the vehicle control system will be judged as abnormal, and the vehicle may fail to operate. situation, causing safety concerns.

In addition, in addition to the above-mentioned safety problems of wired lighting equipment, it will also take a lot of time to install wires, so that the efficiency of overall vehicle production cannot be effectively improved.

Contents of the invention

The purpose of the present invention is to provide a wireless warning device for vehicles, which solves the problems of wired lighting equipment, such as easy impedance changes, aging failures, or electromagnetic interference, resulting in abnormal malfunctions and even driving safety problems, and improves the installation of wired lighting equipment. Construction is time-consuming and labor-intensive.

In order to achieve the purpose disclosed above, the vehicle wireless warning device proposed by the present invention is installed on a car door, and the vehicle wireless warning device includes a sensing unit, a controller, a display unit and a battery unit . The sensing unit wirelessly senses whether the vehicle door is in an open state or a closed state to output a sensing signal. The controller includes a control unit, wherein the control unit generates a reference signal and receives the sensing signal, and compares the sensing signal with the reference signal to output a display control signal. The display unit receives the display control signal to act according to the display control signal. The battery unit is connected to the sensing unit, the controller and the display unit to provide power required by the sensing unit, the controller and the display unit.

Another object of the present invention is to provide a control method for a wireless warning device for a vehicle, which can solve the problems of wired lighting equipment, such as impedance fluctuations, aging faults, or electromagnetic interference, which may cause abnormal malfunctions and even cause driving safety problems, and Improve the problem of time-consuming and laborious installation and construction of wired lighting equipment.

In order to achieve the purpose disclosed above, the present invention proposes a control method for the wireless warning device for a vehicle. The wireless warning device for a vehicle is installed on a car door. The control method for the wireless warning device for a vehicle includes: wireless transmission Sensing that the door is in an open state or a closed state to obtain a sensing signal; comparing the sensing signal with a reference signal to obtain a display control signal; and according to the display control signal, wirelessly warn the vehicle A display unit of the device operates.

Through the vehicle wireless warning device and its control method, the present invention is designed separately from the vehicle control system and the vehicle power supply, so as to solve the problems caused by changes in impedance value, aging faults and circuit interference that may occur in wired lighting equipment. Abnormal malfunctions and safety issues, and save time for installation.

Description of drawings

Fig. 1 is the schematic structural view of the first embodiment of the vehicle wireless warning device of the present invention;

2 is a schematic block diagram of the circuit board of the first embodiment of the vehicle wireless warning device of the present invention;

Fig. 3 is a structural schematic diagram of a light-emitting member of the first embodiment of the wireless warning device for vehicles of the present invention;

Fig. 4 is a structural schematic diagram of another light-emitting member of the first embodiment of the wireless warning device for vehicles of the present invention;

FIG. 5A is a structural schematic diagram of yet another light-emitting member of the first embodiment of the wireless warning device for vehicles of the present invention;

Fig. 5B is a structural schematic diagram of yet another light-emitting member of the first embodiment of the wireless warning device for vehicles of the present invention;

6 is a schematic structural diagram of a second embodiment of the vehicle wireless warning device of the present invention;

7 is a schematic block diagram of the circuit board of the second embodiment of the vehicle wireless warning device of the present invention;

FIG. 8 is a schematic view of the third embodiment of the vehicle wireless warning device of the present invention;

Fig. 9 is a circuit appearance diagram of the third embodiment of the vehicle wireless warning device of the present invention;

10 is a circuit block diagram of a third embodiment of the vehicle wireless warning device of the present invention;

Fig. 11 is a flow chart of the control method of the third embodiment of the vehicle wireless warning device of the present invention;

Fig. 12 is a schematic diagram of the use of the vehicle wireless warning device installed on the vehicle according to the present invention;

Fig. 13A is a schematic top view of the installation state of the vehicle wireless warning device and the magnetic element of the present invention;

13B is a schematic diagram of another installation state of the vehicle wireless warning device and the magnetic element of the present invention;

13C is a schematic diagram of another installation state of the vehicle wireless warning device and the magnetic element of the present invention;

14 is a flow chart of the installation method of the third embodiment of the wireless warning device for vehicles of the present invention;

Figure 15 is a schematic diagram of the use of commonly used wired lighting equipment for vehicles; and

Fig. 16 is a schematic diagram of the appearance of a commonly used wired lighting device for a vehicle.

Figure number:

1 wireless warning device

11 Sensing control component 12 Light emitting component

111 circuit board 112 power module

113 Proximity switch 114 Gravity sensor

115 controller 116 light sensor

121 substrate 122 light emitting diode

123 strip light guide strips 124 light sources

125 base material 126 bendable base material

1261 Substrate Section

13 Upper shell 14 Lower shell

100 door 101 frame

2 wireless warning devices

20 circuit boards 21 controllers

211 control unit 212 timing unit

22 Sensing unit 23 Display unit

24 battery cells 25 magnetic components

3 wired lighting equipment

31 wire rod 32 light-emitting element

SSEN sensor signal SCD display control signal

SCT timing control signal STF timing signal

S11～S16 step S21～S2D step

detailed description

Various embodiments of the present application will be described in detail below, and the accompanying drawings are used as examples. In addition to these detailed descriptions, the present invention can also be widely implemented in other embodiments, and any easy substitution, modification, and equivalent changes of any of the described embodiments are included in the scope of the present application, and the claims prevail. In the description of the specification, many specific details are provided in order to enable readers to have a more complete understanding of the present invention; however, the present invention may still be practiced under the premise of omitting some or all of these specific details. Also, well-known steps or elements have not been described in detail in order to avoid unnecessarily limiting the invention. The same or similar elements will be denoted by the same or similar symbols in the drawings. It should be noted that the drawings are for illustrative purposes only, and do not represent the actual size or quantity of components, and irrelevant details are not fully drawn for the sake of brevity of the drawings.

The present invention mainly provides a wireless warning device that does not need to use the electric power of the vehicle itself. Through the structural configuration of the present invention, it can automatically detect the opening and closing of the door frame, so as to open or close the light-emitting member arranged on the edge of the door frame to achieve warning. The effect of reminding users or passers-by.

Please refer to Fig. 1 and Fig. 2, Fig. 1 is a structural schematic diagram of the first embodiment of the wireless warning device for vehicles of the present invention; Fig. 2 is a schematic block diagram of the circuit board of the first embodiment of the wireless warning device for vehicles of the present invention . As shown in the figure, a wireless warning device 1 for a vehicle of the present invention includes: an induction control component 11 and a light emitting component 12 . Its detailed structure is described as follows.

The wireless warning device 1 of the present invention can be installed on the side of a door frame of a vehicle. In one embodiment, the vehicle is a vehicle with a door frame, such as a car, and the door frame includes but is not limited to Frames for doors and luggage compartment doors. The induction control component 11 includes a circuit board 111, a power module 112, a proximity switch 113, a gravity sensor 114, and a controller 115, wherein the power module 112, the proximity switch 113, the gravity sensor 114, and the controller 115 are all arranged on the circuit board 111 and electrically connected with the circuit board 111, and the controller 115 is electrically connected with the power module 112, the proximity switch 113 and the gravity sensor 114 to receive information of each component to control each component action. Wherein the power module 112 is used to generate a power required by the vehicle wireless warning device 1. In one embodiment, the power module 112 includes a battery component and at least one conductive sheet. In another embodiment, the battery Components include, but are not limited to, rechargeable batteries. The proximity switch 113 is used for receiving a sensing signal. The gravity sensor 114 is used for sensing a movement signal of the sensing control member 11 , especially a position change in the vertical direction. The controller 115 is used for turning on and off the light emitting member 12 according to the sensing information received from at least one of the proximity switch 113 and the gravity sensor 114 or the sensed movement information.

Continuing, in one embodiment, the proximity switch 113, also known as a proximity sensor module, can be an inductive sensor, a capacitive sensor, a photoelectric sensor, a non-contact One of a contactless touch sensor or a magnetic sensor, using the change in the distance between the door and the proximity switch 113, the induced change in charge is used as a means to open and close the light emitting member 12 . In yet another embodiment, the gravity sensor 114 is used to sense the movement information of the sensing control member 11, especially the position change in the vertical direction, to detect whether the sensing control member 11 disposed on the side of the door frame is is moved vertically. And the controller 115 utilizes individual information or both information from the proximity switch 113 or the gravity sensor 114 to determine whether the door frame has been opened. The special structure of this embodiment replaces the conventional method of using magnets, not only does not require additional magnets on the door panel, but also increases the induction effect.

Continuing from the above, in one embodiment, at least two of the proximity switch 113 , the controller 115 , and the gravity sensor 114 are integrated into one chip to reduce the volume occupied by the circuit board 111 and achieve the purpose of minimizing the volume. In addition, in one embodiment, as shown in FIG. 3 , the light-emitting component 12 can be an LED light bar formed by a substrate 121 and a plurality of LEDs 122 disposed on the substrate 121 . In yet another embodiment, as shown in FIG. 4 , the light emitting member 12 can be a strip-shaped light guide strip 123 and a light source 124 , and the light source 124 is disposed on one side of the strip-shaped light guide strip 123 . Wherein, in order to conform to the bending range of the door frame, no matter it is an LED light strip or a strip-shaped light guide strip, the light-emitting member 12 is basically made of a flexible strip-shaped material with a certain degree of flexibility. Substrate 125 (as shown in FIG. 5A ). In yet another embodiment, it can be understood that the light-emitting member 12 can also be composed of a plurality of inflexible base segments 1261 to form a bendable base material 126 (as shown in FIG. 5B ).

As shown in FIG. 6 , it is a schematic structural diagram of a second embodiment of the vehicle wireless warning device of the present invention. The induction control component 11 further includes an upper casing 13 and a lower casing 14 engaged up and down to cover the circuit board 111, the power module 112, the proximity switch 113, the gravity sensor 114, and the controller 115. Inside, to effectively protect its internal components from being polluted by dust, mud and water. In one embodiment, please refer to FIG. 7 , in order to achieve the function of reducing power, the sensing control component 11 further includes a light sensor 116 disposed on the circuit board 111 for sensing external light. If the light sensor 116 detects that it is daytime or the vehicle is illuminated by strong light, the light emitting member can be selectively controlled to not emit light. If the light sensor 116 detects that it is nighttime or the light is too dark, the light emitting member 12 can be selectively controlled to emit light or not to emit light according to the opening and closing of the door frame.

According to the above, the feature of this embodiment is to use a proximity switch sensor or a non-contact touch sensor to replace the wired lighting setup controlled by the vehicle control system. In order to strengthen the opening and closing of the sensing door frame, the gravity sensor is used to strengthen whether the sensing door frame has a vertical movement, so as to detect the opening and closing of the lift-up side door or the luggage compartment door. Furthermore, in order to save the power of the power module, the light source detection module is used to detect the intensity of the external light source to join in the judgment of whether to activate the light-emitting component.

In summary, the first embodiment of the wireless warning device of the present invention is a self-powered wireless warning device, which automatically detects the opening and closing of the door frame to turn on or off the light-emitting member arranged on the edge of the door frame to warn the user or the efficacy of passers-by.

Please refer to FIG. 8 , which is a schematic view of the third embodiment of the vehicle wireless warning device of the present invention. The wireless warning device 2 is installed on a frame 101 of a car door 100 for operation. The wireless warning device 2 can be adhered to the surface of the frame 101 to simplify and facilitate the installation and adjustment of the wireless warning device 2 .

Please refer to FIG. 9 , which is an external view of the internal circuit of the wireless warning device 2 . The wireless warning device 2 includes a controller 21 , a sensor unit 22 , a display unit 23 and a battery unit 24 . The controller 21 , the sensor unit 22 , the display unit 23 and the battery unit 24 are electrically disposed on a circuit board 20 . In this embodiment, the controller 21 can be a microcontroller (MCU) or an integrated circuit (IC). The sensing unit 22 can be a proximity switch (proximity switch) or proximity sensor (proximity sensor), more specifically, the sensing unit 22 can be a magnetic proximity switch (magnetic sensor), a photoelectric proximity switch (photoelectric sensor), An inductive sensor or a capacitive sensor, or a combination thereof. In addition, the sensing unit 22 can also be a gravity sensor (G-sensor). As for the operation description of the sensing unit 22, it will be described in detail later.

The display unit 23 can be a light emitting diode (LED), which can provide lighting and flickering effects through control, and achieve the advantages of power saving, high brightness and long service life. The battery unit 24 can be a thin button cell battery or a coin battery, a miniature alkaline battery or a miniature lithium battery to miniaturize the wireless warning device 2 .

Please refer to FIG. 10 , which is a circuit block diagram of the wireless warning device 2 . The controller 21 mainly includes a control unit 211 and a timing unit 212 . The battery unit 24 is electrically connected to the controller 21 , the sensor unit 22 and the display unit 23 to provide the required power source. The sensing unit 22 and the display unit 23 are electrically connected to the control unit 211 of the controller 21 .

As for the description of the operation of the wireless warning device 2 , please refer to the process steps in FIG. 11 for further details. As mentioned above, taking the sensing unit 22 as a proximity switch, and taking the sensing unit 22 as an example of different types of proximity switches, the sensing unit 22 is used to detect whether an object is approaching. The sensing unit 22 converts the detected physical information, such as magnetism, capacitance, inductance, or luminous flux, or its variation into a sensing signal SSEN, wherein the sensing signal SSEN is an electrical signal. The control unit 211 receives the sensing signal SSEN output by the sensing unit 22 to obtain the sensing signal SSEN ( S11 ).

Then, the control unit 211 compares the magnitude of the sensing signal SSEN, that is, a sensing value, with a threshold generated internally to determine whether the door is open (S12). Since the sensing unit 22 is used to detect different physical quantities, such as magnetic force, capacitance, inductance, or luminous flux, or its variation, the corresponding position of the car door 100 (as shown in FIG. 8 ) detected by the sensing unit 22 is The magnitude of the sensing signal SSEN output by information or movement information will be compared with the threshold value of the same type.

Taking the sensing unit 22 as the capacitive proximity switch as an example, the sensing unit 22 detects a change in the capacitance value or capacitive impedance value of the object to be measured due to movement, corresponding to the magnitude of the sensing signal SSEN, namely The sensing value or also called proximity value (proximity value) represents the distance between the object to be detected and the sensing unit 22 . In the present invention, the object to be detected is a vehicle frame column corresponding to the frame 101 of the vehicle door 100 when the vehicle door 100 is closed. Assuming that the sensing value is less than the critical value, the control unit 211 determines that the object to be detected is not detected, that is, the control unit 211 determines that the vehicle door is in an open state. On the contrary, if the sensing value is greater than or equal to the critical value, the control unit 211 determines that the object to be detected is detected, that is, the control unit 211 determines that the door is closed.

Furthermore, taking the sensing unit 22 as the gravity sensor as an example, the gravity sensor can be installed on a lift door to detect the vertical position or position of the lift door according to the sensed gravity value. mobile information. Therefore, by comparing the gravity value with the preset critical value, it is determined whether the lift door is in an open or closed state.

When the control unit 211 judges that the car door is in an open state, the control unit 211 outputs a display control signal SCD and a timing control signal SCT to respectively turn on the display unit 23 to emit light (S13) and turn on the timing unit 212 performs timing (S14). In step ( S13 ), when the vehicle door is opened, the display unit 23 continues to emit light to warn vehicles coming from behind or pedestrians to pay attention.

However, in order to take into account the power-saving operation of the wireless warning device 2 , in step ( S14 ), the timing unit 212 is started to count, and the timing unit 212 will generate a timing signal STF and send it back to the control unit 211 . Then, the control unit 211 compares the size of the timing signal STF, that is, a timing value, with an internally generated waiting time (for example, set to 30 seconds), to determine whether the display unit 23 continues to emit light. The waiting time has elapsed (S15). If the waiting time is exceeded after the door is opened, that is, if the door is not closed for more than 30 seconds, the control unit 211 outputs the display control signal SCD to turn off the display unit 23 . On the contrary, if the control unit 211 judges that the display unit 23 continues to emit light and has not exceeded the waiting time, it returns to execute step ( S12 ) and subsequent steps. Once the door is opened and then closed within 30 seconds, the display unit 23 can also be turned off to save power to operate the wireless warning device 2 .

If the sensing unit 22 is the magnetic proximity switch, the wireless warning device 2 further includes a magnetic element 25 (as shown in FIG. 12 and FIG. 13A-13C ) to cooperate with it. In this embodiment, the The magnetic element 25 may be a permanent magnet. Furthermore, in order to make the sensing result of the magnetic proximity switch accurate and correct, the corresponding installation positions of the sensing unit 22 and the magnetic element 25 of the wireless warning device 2 are particularly important. As shown in Figure 8, the wireless warning device 2 is installed on the frame 101 of the car door 100, and as shown in Figures 13A to 13C, the magnetic element 25 is installed on the frame 101 when the door 100 is closed. on the corresponding one of the car frame columns. As shown in FIG. 12 as an example, the magnetic element 25 is installed on the middle column between the left front and rear doors of the vehicle to correspond to the wireless warning device 2 installed on the frame of the left front door.

FIG. 13A is a top view showing that the wireless warning device 2 and the magnetic element 25 are correctly installed correspondingly. However, both FIG. 13B and FIG. 13C are top views showing that the wireless warning device 2 and the magnetic element 25 are not installed correctly. For the convenience of description, it is assumed that the position of the wireless warning device 2 installed on the frame 101 of the car door 100 is fixed, therefore, the position of the magnetic element 25 installed on the middle column of the car frame will be determined by the Whether the sensing result of the sensing unit 22 of the wireless warning device 2 is accurate.

Please refer to FIG. 14 , which will further explain the steps of judging whether the wireless warning device 2 and the magnetic element 25 are installed correctly and readjusting the settings after an installation error is detected. Firstly, the user (such as the driver) installs the wireless warning device 2 and the magnetic element 25 on the frame 101 and the frame column of the vehicle door 100 respectively ( S21 ), and then conducts a test of the installation result. When the user closes the vehicle door 100 (S22), the sensing unit 22 senses a first magnetic force value (S23), and records and stores the first magnetic force value. Next, when the user opens the door 100 ( S24 ), the sensing unit senses a second magnetic force value ( S25 ), and records and stores the second magnetic force value.

Then, the control unit 211 first judges whether the first magnetic force value is zero (S26). If the first magnetic force value is not zero, it means that the sensing unit 22 has measured the magnetic force value generated by the magnetic element 25 when the door 100 is closed (S22), that is, the magnetic element 25 is installed in the correct position, as As shown in FIG. 13A, the display unit 23 emits light (S27) to inform the user that the installation is correct. Similarly, in order to take into account the power-saving operation of the wireless warning device 2, the display unit 23 can be set to turn off the display unit after a period of continuous light emission (S28).

On the contrary, if the first magnetic force value is zero, then it is judged whether the second magnetic force value is zero (S29). If the second magnetic force value is non-zero, it means that the sensing unit 22 has measured the magnetic force value generated by the magnetic element 25 at the moment when the door 100 is opened, so it corresponds to the relative position relationship diagram in FIG. 13B . That is, the position where the magnetic element 25 is installed is closer to the outside. At this time, the control unit 211 controls the display unit 23 to flash to inform the user that the magnetic element 25 is installed in the wrong position (S2A), and the display unit 23 can be set Turn off the display unit (S2B) after a period of continuous flashing. In this way, the user can readjust the installation position of the magnetic element 25 (S2C), and then return to perform step (S22) and subsequent steps until the installation position of the magnetic element 25 is correct.

Furthermore, in step (S29), if the second magnetic force value is zero, it means that the sensing unit 22 has not measured the magnetic force value generated by the magnetic element 25 at the moment when the door 100 is opened, so corresponding to the relative value of FIG. 13C Location diagram. That is, the magnetic element 25 is installed closer to the inner side, or the magnetic element 25 is installed at a position that is too high or too low compared to the sensing unit 22 (not shown in FIG. 13C ), at this time the control unit 211 controls the display unit 23 No light is emitted to inform the user that the magnetic element 25 is installed in a wrong position (S2D). In this way, the user can readjust the installation position of the magnetic element 25 (S2C), and then return to perform step (S22) and subsequent steps until the installation position of the magnetic element 25 is correct.

Through the detection and adjustment of the alignment between the wireless warning device 2 and the magnetic element 25 , the wireless warning device 2 can be adjusted to an optimal sensing position before use to improve the accuracy of sensing results.

In summary, the present invention has the following features and advantages:

1. The present invention is designed separately from the vehicle control system and vehicle power supply of the vehicle to solve the abnormal malfunction and safety problems caused by the impedance value change, aging fault and short circuit of the wired lighting equipment, and the circuit interference, and make the installation save time;

2. By controlling the display unit 23 to provide lighting and flashing effects to improve the warning effect, and at the same time achieve the advantages of power saving, high brightness and long service life; and

3. Provide alignment detection and judgment of the wireless warning device 2 , and improve the accuracy of sensing results by correctly installing the wireless warning device 2 .

The above-described embodiments are only to illustrate the technical ideas and characteristics of the present invention, and its purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. When it cannot limit the patent scope of the present invention, any Equivalent changes or modifications made according to the spirit disclosed in the present invention should still be covered within the patent scope of the present invention.

Claims (10)

1. an automobile-used wireless type alarming device, it is characterised in that it is installed on a car door, this automobile-used wireless type alarming device comprises:

One sensing unit, this car door of wireless sensing is an opening or a closed mode, to export a transducing signal；

One controller, comprises a control unit, and wherein this control unit produces a reference signal and receives this transducing signal, and is compared with this reference signal by this transducing signal, to export a display control signal；

One display unit, receives this display control signal, to carry out start according to this display control signal；And

One battery unit, connects this sensing unit, this controller and this display unit, to provide the electric power needed for this sensing unit, this controller and this display unit.

2. automobile-used wireless type alarming device as claimed in claim 1, it is characterised in that this controller more comprises:

One timing unit, connects this control unit, to receive the timing control signals exported after this transducing signal compares with this reference signal；

Wherein this control unit drives this timing unit timing according to this timing control signals, the time luminous to control this display unit.

3. automobile-used wireless type alarming device as claimed in claim 1 or 2, it is characterized in that, when this this car door of sensing unit wireless sensing is this opening, this control unit is after this sensing unit receives this transducing signal and compares with this reference signal, this transducing signal, less than this reference signal, drives this display unit luminous exporting this display control signal；And when this this car door of sensing unit wireless sensing is this closed mode, then this control unit is after this sensing unit receives this transducing signal and compares with this reference signal, this transducing signal, more than or equal to this reference signal, drives this display unit to close exporting this display control signal.

4. automobile-used wireless type alarming device as claimed in claim 1, it is characterized in that, this sensing unit is any one of a magnetic induction type proximity switch, a photo-electric proximity switch, an inductance type proximity switch, a condenser type proximity switch or a gravity sensor or appoints both above combinations.

5. automobile-used wireless type alarming device as claimed in claim 1, it is characterised in that this battery unit is any one of a button cell, a miniature alkaline battery or a miniature lithium battery.

6. the control method of an automobile-used wireless type alarming device, it is characterised in that this automobile-used wireless type alarming device is installed on a car door, and the control method of this automobile-used wireless type alarming device comprises:

This car door of wireless sensing is an opening or a closed mode, to obtain a transducing signal；

Relatively this transducing signal and a reference signal, to obtain a display control signal；And

According to this display control signal, a display unit of this automobile-used wireless type alarming device is carried out start.

7. the control method of automobile-used wireless type alarming device as claimed in claim 6, it is characterised in that in comparing this transducing signal step with this reference signal, obtain a timing control signals；

A timing unit timing of this automobile-used wireless type alarming device is driven, the time luminous to control this display unit according to this timing control signals.

8. the control method of automobile-used wireless type alarming device as claimed in claim 7, it is characterized in that, when this car door is this opening, after this transducing signal and this reference signal compare, this transducing signal, less than this reference signal, drives this display unit luminous exporting this display control signal；When this car door is this closed mode, after this transducing signal and this reference signal compare, this transducing signal, more than or equal to this reference signal, drives this display unit to close exporting this display control signal.

9. the control method of automobile-used wireless type alarming device as claimed in claim 8, it is characterised in that when this car door is this opening, more comprise:

Judge that whether the time of this display unit luminescence is more than the setting time；And

If the time of this display unit luminescence exceedes this setting time, close this display unit luminous.

10. the control method of automobile-used wireless type alarming device as claimed in claim 9, it is characterised in that if the time of this display unit luminescence is not less than this setting time, reply performs the step comparing this transducing signal with this reference signal.