TWM506734U - Water level detector for automotive tanks - Google Patents

Description

Water level detector for car water tank

The present invention relates to a vehicle water tank detecting device, and more particularly to a water tank water level detecting device that does not need to damage the water tank structure.

In order to avoid overheating, the engine of the car usually needs a cooling system to adjust the working temperature of the engine. The cooling system of the general vehicle mainly includes components such as a water tank, a water pump, a cooling fan and a thermostat, wherein, in order to ensure the cooling effect, There must be enough water in the water tank. If the water tank leaks due to old or damaged, the engine may be overheated and damaged. In this regard, the industry has developed a car water tank detection device, as shown in the first figure. The utility model comprises a water tank cover 12, a sensing unit 11 (such as a conductive device) combined with the water tank cover 12, and a circuit device 13, wherein one end of the sensing unit 11 extends into the water tank 10, and the sensing unit is 11 When the water level in the water tank 10 is insufficient to contact the water, the circuit device 13 can sense that the conductive device is in an open state, and can transmit a control signal to activate an alarm device such as a buzzer, thereby enabling detection. The purpose of measuring the water level of the water tank 10.

Referring to the first figure, the conventional car water tank detecting device can achieve the purpose of detecting the water level of the water tank, but the sensing unit 11 disclosed therein is a conductive device, and one end of the conductive device must penetrate into the water tank 10 It can be detected, so for the existing car, the water tank cover 12 of the water tank 10 must be destroyed before installation, so that it may increase in addition to labor time. The risk of product failure or failure caused by poor construction of the additive causes the convenience and practicability of the use. Therefore, how to improve the above-mentioned defects is the technical difficulty that the creator of the case wants to solve.

In view of the existing automobile water tank detecting device, it is necessary to damage the water tank structure to be installed, resulting in limited product usability and ease of use. Therefore, the purpose of the present invention is to develop a water tank water level detecting device that does not need to damage the water tank structure.

Another purpose of this creation is to develop a detection device that combines temperature measurement, water level measurement and battery voltage measurement.

In order to achieve the above objective, the present invention provides a water level detector for a car water tank, comprising: a liquid level sensing device, wherein the liquid level sensing device is provided with two sensing electrode sheets and a a comparison circuit electrically connected to the two sensing electrode sheets respectively, wherein the two sensing electrode pieces are respectively disposed on a surface of the automobile water tank; a controller, the controller and the liquid level sensing device are compared with each other Sexual connection; a warning device that is in communication with the controller in a wired or wireless manner, and an alarm output device is provided on the warning device.

By fixing the sensing electrode piece of the liquid level sensing device to the surface of the car water tank, the present invention realizes the purpose of detecting the water level of the water tank without destroying the water tank structure, thereby achieving the effect of greatly improving the convenience and practicability of use.

[Use]

10‧‧‧Water tank

11‧‧‧Sensor unit

12‧‧‧Water tank cover

13‧‧‧Circuit devices

[this creation]

3‧‧‧ Liquid level sensing device

31‧‧‧Sensing electrode

311‧‧‧ Carrier

312‧‧‧Sensor components

313‧‧‧ Attachment

32‧‧‧Comparative circuit

33‧‧‧Temperature Sensor

34‧‧‧Voltage Detector

4‧‧‧ Controller

5‧‧‧ Warning device

51‧‧‧Alarm output device

6‧‧‧Automobile water tank

7‧‧‧Battery

The first figure is a schematic diagram of the structure used.

The second picture is a schematic diagram of the structure of the creation.

The third figure is a schematic side view of the sensing element disposed on the surface of the water tank.

The fourth picture is a schematic diagram of the action of this creation.

Referring to the second figure, the present invention provides a water level detector for a car water tank 6, which comprises: a liquid level sensing device 3. In the embodiment, the liquid level sensing device 3 can be a capacitive liquid level sensing device, which mainly senses the liquid level by using a principle that a change in liquid level or water content causes a change in electric field and capacitance value, and the liquid level sensing device is provided with two sensing electrodes. a slice 31 and a comparison circuit 32 respectively electrically connected to the two sensing electrode pads 31. Specifically, the comparison circuit 32 can be implemented by using an operational amplifier, and the remaining detailed structure of the capacitive liquid level sensing device The prior art is not a technical feature of the present invention. Therefore, the two sensing electrode sheets 31 are respectively disposed on the surface of the automobile water tank 6, such as a top surface or a side surface. Preferably, the sensing electrode sheet is used. 31 can be fixed to the surface of the car water tank 6 by means of adhesive or adsorption. Please refer to the third figure. In the embodiment, the sensing electrode piece 31 is provided with a carrier 311 (such as a housing or a carrier). a sensing element 312 disposed on the carrier 311, The sensing electrode sheet 31 includes an attaching member 313 disposed around the sensing element 312 for attaching and fixing the sensing electrode sheet 31 to the surface of the automobile water tank 6, thereby making the sensing element 312 as close as possible to the automobile. The surface of the water tank 6 is used to improve the detection accuracy. In the embodiment, the attachment member 313 is a double-sided tape, preferably a double-sided tape for the vehicle, so as to meet the high heat resistance requirement. In other feasible embodiments, the The attachment member 313 is also an item that can be attached and fixed, such as a magnet; a controller 4 that is electrically connected to the liquid level sensing device 3, and more specifically, the controller 4 is connected to the liquid level. The sensing device 3 is electrically connected to the comparison circuit 32. In other feasible embodiments, the controller 4 and the comparison circuit 32 can also be integrated into a single integrated chip, whereby the utility model can simplify the function of the structure; a warning device 5, the warning device 5 is The alarm device 5 is provided with an alarm output device 51 such as a display or an LED light or a buzzer. The warning device 5 is generally disposed in the driver's seat of the automobile, and its specific position is connected. The driver device 5 is connected to the controller 4 in a wireless manner. In this case, the controller 4 and the warning device 5 are further provided with a phase respectively. Corresponding wireless transceiver modules, such as Bluetooth, WiFi or Zigbee transceiver modules, are also well-known in their specific details. By adopting the technical solution of wireless connection, the wired connection must be avoided in the vehicle body firewall and the warning device. 5, the problem that the position is limited, and the like, and thus the use flexibility and the ease of installation are provided. In addition, the warning device 5 is specifically a smart phone or a tablet. The brain, by this, the user can directly know the water level of the car water tank from the portable smart phone, which greatly improves the convenience of use; please refer to the second and fourth figures, as the car water tank 6 When the water leaks due to aging or damage, the water level in the water tank 6 of the vehicle will gradually decrease. At this time, the two sensing electrodes 31 of the liquid level sensing device 3 may sense and generate different values. When the two values reach or exceed a predetermined gap, it can be confirmed that the water level of the automobile water tank 6 is reduced or leaked. At this time, the comparison circuit 32 transmits a warning signal to the controller 4, so that the two The controller 4 can send a control signal to the warning device 5 in a wired or wireless manner, and the warning device 5 can output the relevant warning message on the alarm output device 51 by means of sound, light or screen information, thereby enabling the creation. The function of detecting the water leakage of the water tank is achieved. Here, the sensing electrode piece 31 of the liquid level sensing device 3 is fixed on the surface of the automobile water tank 6 by adhesion or adsorption. The purpose of detecting the water level of the water tank without destroying the water tank structure is achieved, and the effect of convenience and practicability is greatly improved; in addition, as shown in the second figure, the creation may further include a temperature sensor 33. The temperature sensor 33 is also disposed on the surface of the car water tank 6, and the temperature sensor 33 is electrically connected to the controller 4, thereby enabling the controller 4 to detect the temperature sensor 33. The value is transmitted to the warning device 5, so that the alarm output device 51 can display the current temperature of the water tank or output a related warning message when the temperature of the water tank is too high; in addition, the controller 4 generally needs to be connected to the battery 7 on a vehicle. In order to obtain the power supply, the present invention may further include a voltage detector 34 coupled to the line between the controller 4 and the battery 7 for detecting the voltage of the battery 7. Therefore, when the voltage of the battery 7 is too low, the alarm output device 51 can output relevant warning messages, so that the creation can simultaneously have various functions such as temperature measurement, water level measurement and voltage measurement, and it is worthwhile here. It is mentioned that the temperature Sensor 33 or 34 may also be provided a voltage detector 31 is attached member 313 like structure as sympathy sensing electrode sheet, quick and easy to achieve binding, and thus can achieve a better enable the creation of product availability.

3‧‧‧ Liquid level sensing device

31‧‧‧Sensing electrode

32‧‧‧Comparative circuit

33‧‧‧Temperature Sensor

34‧‧‧Voltage Detector

4‧‧‧ Controller

5‧‧‧ Warning device

51‧‧‧Alarm output device

6‧‧‧Automobile water tank

7‧‧‧Battery

Claims (10)

A water level detector is used in an automobile water tank, comprising: a liquid level sensing device, wherein the liquid level sensing device is provided with two sensing electrode sheets and one is respectively electrically connected to the two sensing electrodes a comparison circuit for the connection, the two sensing electrode pieces are respectively disposed on the surface of the automobile water tank; a controller, the controller is electrically connected with the comparison circuit of the liquid level sensing device; a warning device, the warning device The controller is communicably connected in a wired or wireless manner, and an alarm output device is disposed on the warning device. The water level detector according to claim 1, wherein the liquid level sensing device is a capacitive liquid level sensing device. The water level detector according to claim 1, wherein the sensing electrode sheet is provided with a carrier and a sensing element disposed on the carrier, and the sensing electrode sheet comprises a sensing element disposed on the sensing element. Attachment around. The water level detector according to claim 3, wherein the attachment member is a double-sided tape or a magnet. The water level detector of claim 1, wherein the controller and the comparison circuit are integrated into a single integrated wafer. The water level detector according to claim 1, wherein the controller and the warning device are respectively provided with a corresponding wireless transceiver module. The water level detector according to claim 1, wherein the warning device is a smart phone or a tablet. The water level detector of claim 1, wherein the alarm output device is a display or an LED light or a buzzer. The water level detector according to any one of claims 1 to 8, further comprising a temperature sensor disposed on a surface of the water tank of the automobile, and the temperature sensor and the control Electrical connection. The water level detector according to any one of claims 1 to 8, further comprising a voltage detector coupled to the line between the controller and a battery, To detect the voltage of the battery.