CN105528896A - Flexible Surface Mount Package Type Magnetic Inductive Sensor - Google Patents

Abstract

The invention provides a flexible surface-mounted packaging type magnetic induction sensor, which aims to solve the technical problems that the road surface must be cut, the road is damaged and the traffic operation is influenced when a road surface of a contact type road traffic volume induction device is mounted. The technical scheme is that the adhesive fixing layer is directly adhered and fixed on the road surface, so that the road surface is not damaged, the installation is rapid, time-saving and labor-saving, the integrity of the road surface is kept, the waterproof and moistureproof adhesive fixing layer has good moistureproof and waterproof performances, the waterproof and moistureproof adhesive fixing layer is also easily detached from the road surface, and the road traffic cannot be influenced by the later maintenance work.

Description

Flexible Surface Mount Package Type Magnetic Inductive Sensor

technical field

The patent application of the present invention relates to a dynamic detection device for road traffic volume, in particular to a contact sensing device for dynamic information of road traffic volume.

Background technique

The scale and systematization of highway construction will make the exchanges between regions and the exchange of product trade more smooth, and it will be more necessary for the overall construction of the highway, the reasonable coordination of the whole and the part, and the improvement and redevelopment of the hardware infrastructure and software supporting facilities. In terms of links, they should adapt to and meet the ever-increasing demand for transportation and carrying capacity, and should have certain advanced development planning and design concepts to improve and expand the transportation network system network. made. By collecting and understanding the multi-dimensional changes and distribution rules of traffic volume in time and space, it provides necessary traffic volume for road designers, planners or managers to implement traffic planning, construction, traffic control and management, and engineering economic analysis. profile data.

The core of the traffic volume contact sensing device is the ground sense coil. At present, the ground sense coil is installed on the road surface by digging trenches and burying the road surface. The implementation of technical problems such as moisture-proof and water-proof treatment, and short service life have become technical obstacles to its large-scale promotion and application. The installation of another non-contact sensor has the advantage of avoiding damage to the road surface. It mainly includes ultrasonic induction devices, video image acquisition devices, and microwave or laser detection devices. These devices require auxiliary erection components such as gantry frames or poles. Erection and construction take a long time, consume a lot of manpower and material resources, and directly drive up the cost.

Contents of the invention

The purpose of the invention of the patent application of the present invention is to provide a flexible surface-mounted packaged magnetic induction sensor. This magnetic induction sensor is used as a road traffic volume contact sensing device. Devices and microwave or laser detection devices require additional erection components, and the fixation and removal will have no impact on the road surface and running vehicles.

The technical scheme of the flexible surface-mounted packaged magnetic induction sensor provided by the application of the present invention, its main technical content is: a flexible surface-mounted packaged magnetic induction sensor, including a flexible insulating protective layer, the upper and lower surfaces of the flexible insulating protective layer are compounded with wear-resistant rubber layers, A viscous fixing layer is compounded outside the wear-resistant rubber layer on the lower side, and a magnetic induction coil coiled by copper foil is pre-embedded in the flexible insulating protection layer.

The technical scheme of the flexible surface-mounted packaged magnetic induction sensor disclosed in the patent application of the present invention is directly pasted and fixed on the road surface by the adhesive fixing layer, which does not damage the road surface. It is quick to install, saves time and effort, and maintains the integrity of the road surface. Under heavy rolling, it can still maintain its structural state for a long time. Its packaging structure has good moisture-proof and waterproof performance, which can protect the electromagnetic coil from stable and accurate electromagnetic induction work detection status. It has a long service life and is easy to remove from the road. Maintenance work will not affect road traffic.

Description of drawings

Fig. 1 is a longitudinal section sectional structure drawing of the present application.

Fig. 2 is a cross-sectional structure diagram showing the structure of the electromagnetic coil in the solution of the present application.

detailed description

The accompanying drawings show the specific implementation structure of the flexible surface-mounted packaged magnetic induction sensor disclosed in the application of the present invention. The flexible surface-mounted packaged magnetic induction sensor is a product with a planar layered structure, and its general size is 2 meters long and 1 meter wide. According to the road scale standard, the appropriate size can be adopted, and it can be laid flat and fixed in the center of the road surface of the lane without affecting the traffic of vehicles.

The flexible surface-mounted packaged magnetic induction sensor includes a flexible insulating protective layer 2, and the upper and lower sides of the flexible insulating protective layer 2 are fixed and compounded with wear-resistant rubber layers 1 and 3. For example, it is made of a series of wear-resistant materials such as solution-polymerized styrene-butadiene rubber materials. , has the characteristics of heat resistance, cold resistance, and low heat generation, and is suitable for direct frictional contact with vehicle tires. The outer surface of the wear-resistant rubber layer 3 on the lower side is also compounded with a viscous fixing layer 4. The viscous fixing layer 4 can be selected from many viscous materials. Using, for example, cyanoacrylate glue, etc., after being fixed on the road surface by the viscous fixing layer 4, the upper wear-resistant rubber layer 3 is the road surface area in direct contact with the vehicle tires.

The flexible insulating protective layer 2 can be made of flexible raw rubber material, which has excellent elasticity, can well buffer vehicles from rolling, and has excellent water-proof and insulating properties. A magnetic induction coil 5 formed by coiling copper foil is pre-embedded in the flexible insulating protection layer 2 . As shown in FIG. 2 , the magnetic induction coil 5 is formed by coiling copper foil from the edge to the inside, and the number of coils is generally 3-6. The magnetic induction coil 5 can be directly plastic-embedded in the flexible insulating protective layer 2, or: the flexible insulating protective layer 2 is composed of upper and lower sealing buckles, and the magnetic induction coil 5 is placed on the upper and lower sealing buckles Among the flexible insulating protection layer 2, the sealing buckle ensures its waterproof and moisture-proof performance.

The magnetic induction coil 5 is an inductive sensing part of the oscillating circuit in the electric transmission part. When each vehicle passes through the magnetic induction coil 5, the metal of the vehicle chassis will force the frequency signal of the oscillating circuit to change accordingly, forming a corresponding induction variable In the same time period, the greater the frequency change, the higher the metal content of the vehicle chassis, the greater the corresponding frequency amplitude, and vice versa. The processor collects relevant frequency signals, and then analyzes, processes, classifies, and stores them to complete the data collection work.

Claims (4)

1. a flexible surface mount packages type magnetic induction sensor, it is characterized in that its formation comprises flexible insulation protective layer (2), flexible insulation protective layer upper and lower surface is compounded with abrasive rubber layer (1,3), be compounded with viscosity fixation layer (4) outside the abrasive rubber layer of downside, in described flexible insulation protective layer (2), be embedded with the magnetic induction loop (5) coiled by Copper Foil.

2. flexible surface mount packages type magnetic induction sensor according to claim 1, is characterized in that magnetic induction loop (5) is directly moulded and is embedded in flexible insulation protective layer (2).

3. flexible surface mount packages type magnetic induction sensor according to claim 1, it is characterized in that flexible insulation protective layer (2) is made up of two parts of upper and lower sealing make-up, magnetic induction loop (5) is placed among the flexible insulation protective layer (2) of upper and lower sealing make-up.

4. flexible surface mount packages type magnetic induction sensor according to claim 1, is characterized in that magnetic induction loop (5) is inwardly coiled to form by edge from coil to coil for Copper Foil, and the number of turns of coiling is 3 ~ 6 circles.