CN201034617Y - Solution Metering Sensing Device - Google Patents

Abstract

The utility model relates to a solution measurement sensing device uses in the solution liquid level of solution storage container to measurationly, and it includes: a base layer plate; a sensing layer, including a first sensing part and a second sensing part, wherein the first sensing part and the second sensing part respectively have a plurality of parallel strip lines extending laterally in the horizontal direction and are mutually staggered, and the sensing layer is arranged on one side surface of the base plate; a protective layer covering the sensing layer for measuring the physical characteristics of the fluid, especially the capacitance value, and further determining the height of the fluid in the container to determine whether the fluid is refilled in the container.

Description

Solution Metering Sensing Device

technical field

The utility model relates to a solution measuring and sensing device, in particular to a measuring and sensing device for the fluid level in a solution storage container.

Background technique

Conventional fluid level measuring devices are used to measure the amount of fluid. Common fluid measuring devices are usually bulky and have complex components, and the cost is relatively high due to such a result. However, products with small size and low cost are also becoming more and more important under the market demand. Taking the fuel cell system as an example, the trend of using the fuel cell system in portable electronic devices is becoming more and more obvious. In the fuel cell system that uses hydrogen-rich fuel fluids such as methanol and oxygen-fuel fluids to perform electrochemical reactions to output electricity, it is necessary to allow The user knows when the fuel fluid concentration is insufficient or the stock is insufficient and the fuel fluid must be replenished, so the fuel fluid liquid level and fuel fluid volume in the fuel fluid container must be detected. In general, fuel fluid containers provide detection of fuel fluid concentration and fuel fluid inventory through expensive metering sensors, which are quite uneconomical for current portable electrical products that need to be used in large quantities.

In view of the deficiencies of the conventional metering and sensing devices, the creator of this paper felt that it was not perfect, so he tried his best to study and overcome it. Based on the accumulated experience in this industry for many years, he then developed a method that can be improved, and can Effectively achieve the purpose.

Utility model content

The main purpose of the present utility model is to provide a solution measuring and sensing device for measuring and sensing the fluid level or other physical properties of the solution in the solution storage container, and has a structure for protecting the electrical circuit of the sensing device.

Another object of the present utility model is to provide a solution measuring and sensing device, using the sensing part to measure its capacitance value, inductance value, impedance value or any electrical signal in the combination of these electrical signals, and can obtain the corresponding Solution physical properties.

Another object of the present invention is to provide a solution measuring and sensing device, which can be used in a fuel cell system to measure the fuel fluid level in a fuel solution storage container of the fuel cell.

The utility model provides a solution measuring and sensing device, which is used to measure the solution liquid level in a solution storage container, and it includes: a base plate; a sensing layer, including a first sensing part and a second sensing part The detection part, wherein, the first sensing part and the second sensing part respectively have several parallel strip lines extending laterally in the horizontal direction and intersect each other to form a capacitive effect, and the sensing layer is arranged on one of the base boards On the side; a protective layer covering the sensing layer.

The solution measuring and sensing device of the utility model uses the sensing layer to measure the physical characteristics of the fluid, especially the characteristics of its capacitance value, and can further judge the height of the fluid in the container, and judge whether the fluid should be injected again. in the container. The solution measuring and sensing device provided by the utility model can accurately measure the solution volume in a general solution storage container, and even measure the fuel solution volume in a fuel solution storage container of a fuel cell.

In order to make those familiar with the art understand the purpose, features and effects of the present utility model, the following specific embodiments are hereby described in detail in conjunction with the attached drawings.

Description of drawings

Fig. 1 is a partial sectional schematic diagram of the utility model;

Fig. 2 is a partial plan view of the sensing layer of the utility model;

Fig. 3 is the use schematic diagram of the preferred embodiment of the utility model; And

Fig. 4 is a side sectional view of another preferred embodiment of the solution measuring and sensing device of the present invention.

Explanation of main component symbols

1 Solution metering and sensing device

10 base board

20 sensing layer

22 The first sensing part

24 The second sensing part

26 temperature sensor

30 layers of protection

40 connectors

50 solution storage containers

52 solution

60 layers of protection

Detailed ways

Please refer to Fig. 1, which is a partial cross-sectional schematic diagram of the present invention. A solution metering and sensing device 1 of the present invention at least includes a base plate 10, a sensing layer 20 and a protective layer 30, wherein the sensing The measurement layer 20 is sandwiched between the base plate 10 and the protective layer 30 , and it can measure any of the following signals: capacitance value, inductance value, impedance value. And one end of the solution measuring and sensing device 1 has a connector 40, so that the information generated by the sensing layer 20 can pass through the connector 40, and the measured physical quantity can be sent to the microprocessor or communicate with the outside such as Computer electrical connection.

The aforementioned protective layer 30 can cover the entire base substrate 10 and the outer surface of the sensing layer 20 .

Please refer to FIG. 2 again, which is a partial plan view of the sensing layer of the present invention. It can be seen from this figure that the sensing layer 20 includes a first sensing portion 22 and a second sensing portion 24, wherein the The first sensing part 22 and the second sensing part 24 respectively have several parallel strip lines extending laterally and crossing each other in the horizontal direction, and also have a temperature sensor 26 . The implementation content of the present invention will be described in detail below.

In addition, the first sensing portion 22 and the second sensing portion 24 are divided into a plurality of strip lines extending laterally in the horizontal direction, as long as the first sensing portion 22 and the second sensing portion 24 are respectively Striplines extending laterally can create a capacitive effect, not necessarily parallel striplines.

Please refer to FIG. 3 , which is a schematic diagram of the use of a preferred embodiment of the present invention. The solution measuring and sensing device 1 of the present invention can be arranged in a solution storage container 50. For example, the solution storage container 50 It is a fuel solution storage container used to store fuel in a fuel cell system. The solution storage container 50 has a solution 52 in it, and the solution measuring and sensing device 1 is placed in the depth space to be measured by the solution storage container 50, In this way, the liquid level height, solution density, solution concentration or other solution characteristics of the solution can be measured, and the received information can be sent out from the connector 40. When the temperature of the solution storage container 50 changes , the temperature sensor 26 can sense and transmit the information through the connector 40 to take into account possible errors.

The materials of the aforementioned base plate 10 and protective layer 30 can be selected from one of the materials in FR4, FR5, epoxy resin, glass fiber substrate, ceramic substrate, polymer plasticized substrate and their mixed materials, so that the base plate 10 And the protection layer 30 can have corrosion resistance, so as to prevent the metal material in the sensing layer 20 from being corroded by corrosive liquid. In addition, the materials listed above are commonly used materials in industry, so they are mature in manufacture, and the base plate 10 and the protective layer 30 can be manufactured conveniently.

The aforementioned solution metering and sensing device of the utility model uses the material of the protective layer 30 of the fuel solution storage container to avoid the corrosion of the fuel to the wires of the electrical circuit, so the material of the protective layer 30 can be further selected from Teflon, PE, non-polar materials, etc. Wherein, the Teflon material can be coated on the protective layer 30 and the outer surface of the base plate 10 by using surface coating technology. In addition, the entire outer surface of the solution measuring and sensing device of the present invention can be coated with the Teflon material.

Please refer to FIG. 4 again, which is a side sectional view of another preferred embodiment of the solution measuring and sensing device of the present invention. In the aforementioned solution metering and sensing device of the present invention, the solution metering and sensing device 1 further includes a protective layer 60, which is a metal conductive layer and electrically grounded, and the protective layer 60 is laid on the base plate 10 opposite to The other surface of the sensing layer 20 enables the protection layer 60 to serve as an electromagnetic protection layer when there are other electrical components that may generate electromagnetic interference near the solution metering sensing device 1 .

Therefore, the solution measuring and sensing device provided by the utility model can accurately measure the solution volume in the general solution storage container, and even measure the fuel solution volume in the fuel solution storage container of the fuel cell. Therefore, the utility model The new model is extremely progressive and meets the requirements for applying for a utility model patent. Please file an application in accordance with the law. I hope that the bureau will grant the patent as soon as possible. It is really convenient.

The utility model has been described in detail above, but the above description is only a preferred embodiment of the utility model, and should not limit the implementation scope of the utility model. That is, all equivalent changes and modifications made according to the scope of application of the utility model should still fall within the scope of the patent of the utility model.

Claims (11)

1. a solution measures sensing apparatus, it is characterized in that: comprising:

One basal plate;

One sensed layer, include one first detecting part and one second detecting part, wherein this first detecting part and second detecting part have the interlaced and formation capacity effect of several band lines that extend laterally in the horizontal direction respectively, and this sensed layer is located on the side of this basal plate;

One protective seam is covered on this sensed layer.

2. solution metering sensing apparatus as claimed in claim 1 is characterized in that: this solution metering sensing apparatus can include a connector again, and this connector can be linked to the outside with the signal of this first detecting part and the generation of this second detecting part.

3. solution metering sensing apparatus as claimed in claim 2 is characterized in that: this solution metering sensing apparatus can include a temperature sensor again, and the signal of this temperature sensor and this connector have electric binding.

4. solution metering sensing apparatus as claimed in claim 1, it is characterized in that: this protective seam coats the outside surface of whole this basal plate and this sensed layer.

5. solution metering sensing apparatus as claimed in claim 1 is characterized in that: the material of this basal plate is one of selection material in FR4, FR5, epoxy resin, glass substrate, ceramic substrate, macromolecule plasticizing substrate and composite material thereof.

6. solution metering sensing apparatus as claimed in claim 1 is characterized in that: the material of this protective seam is one of selection material in FR4, FR5, epoxy resin, glass substrate, ceramic substrate, macromolecule plasticizing substrate and composite material thereof.

7. solution as claimed in claim 1 metering sensing apparatus is characterized in that: the material of this protective seam is for selecting from the iron arbitrary material in dragon, PE, nonpolar material and composition thereof not.

8. solution metering sensing apparatus as claimed in claim 1, it is characterized in that: this solution metering sensing apparatus further comprises a protective layer, this protective layer is a metal conducting layer and electrical grounding, and this protective layer is layed in this basal plate another surface of this sensed layer relatively.

9. solution metering sensing apparatus as claimed in claim 8, it is characterized in that: this protective seam coats the outside surface of whole this basal plate and this sensed layer.

10. solution metering sensing apparatus as claimed in claim 8 is characterized in that: the material of this basal plate is one of selection material in FR4, FR5, epoxy resin, glass substrate, ceramic substrate, macromolecule plasticizing substrate and composite material thereof.

11. solution metering sensing apparatus as claimed in claim 8 is characterized in that: the material of this protective seam is one of selection material in FR4, FR5, epoxy resin, glass substrate, ceramic substrate, macromolecule plasticizing substrate and composite material thereof.

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