CN203893870U

CN203893870U - Switching device capable of connecting vibrating wire sensor

Info

Publication number: CN203893870U
Application number: CN201420267426.9U
Authority: CN
Inventors: 孙辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-05-23
Filing date: 2014-05-23
Publication date: 2014-10-22
Anticipated expiration: 2024-05-23

Abstract

The utility model discloses a switching device capable of connecting a vibrating wire sensor. The device comprises a cabinet. The cabinet is provided with a master control unit, a storage unit, a bus matrix and at least three interfaces inside. The outer side of the cabinet is provided with at least three hollow ports used to embed interfaces. The bus matrix is connected with the interfaces through cables. The bus matrix, the storage unit, and the master control unit are connected in a pairwise manner. The switching device solves technical problems that a collection device cannot collect multiple construction measurement information at the same time by the prior art, and a plurality of cables are arranged and access the device so wiring is complex, and cost is high and power consumption is large. The switching device also reduces difficulty of collecting measurement information outdoors, and the cabinet structure is designed in relatively small volume, so the device can be used in various outdoor environments.

Description

Can be used for connecting the switching device of vibrating string type sensor

Technical field

The utility model relates to sensor technical field, relates in particular to a kind ofly comprise but do not limit the use of in the switching device that connects vibrating string type sensor.

Background technology

Sensor (transducer/sensor) is a kind of pick-up unit, can experience measured information, and can be by the information detecting, be for conversion into according to certain rules the information output of electric signal or other desired forms, to meet the requirements such as transmission, processing, storage, demonstration, record and control of information, especially more extensive for the use of sensor in open air measurement engineering.

Existing sensor has multiple, vibrating string type sensor for example, using tension metallic cord as sensitive element, after the length of string is determined, the variable quantity of its natural vibration frequency can characterize the size of the suffered pulling force of string, by corresponding metering circuit, just can obtain becoming with pulling force the electric signal of certain relation.

Owing to measuring out of doors in engineering, while adopting vibrating string type sensor metrical information, vibrating string type sensor directly need to be connected and could gather metrical information with collecting device, yet existing collecting device is Multipath switch-in apparatus, be generally tree structure, the maximum collecting amount of backstage collecting device separate unit is at most to 50, equipment size is very large, its all the sensors end all needs to access backstage collecting device, be subject to the restriction of length of cable and signal attenuation, must arrange nearby, thereby cause wiring complicated, installation volume is larger, cannot be applied to outdoor various environment, and, collecting device cannot gather various engineering metrical information simultaneously, need many cable wiring accesses, further increased the difficulty of outdoor collection metrical information and wiring, required number of cables is many, and power consumption and volume are all very large, adaptability is poor, in real work, even only have single check point, also the collecting device that needs acquisition price costliness, therefore cost is huge.

Utility model content

The utility model discloses and a kind ofly comprise but do not limit the use of in the switching device that connects vibrating string type sensor, not only solve the collecting device that prior art causes and cannot gather various engineering metrical information simultaneously, and many cable wirings access and the wiring that causes is complicated, volume is large, power consumption high-technology problem, also reduced the difficulty of outdoor collection metrical information, and the smaller size smaller of box-like structure design, can be applied to outdoor various environment, and can connect various sensors, its strong adaptability.

A kind of switching device that can be used for connecting vibrating string type sensor that the utility model embodiment provides, comprises box body, in described box body, main control unit is installed, storage unit, bus matrix and at least 3 interfaces;

Described box body outside has at least 3 for embedding the hollow mouth of described interface;

Described bus matrix is connected with described interface by cable;

Described bus matrix, described storage unit is connected between two with described main control unit.

Alternatively, described box body also has for embedding the power end of power interface, and for giving described main control unit, described storage unit and described bus matrix are powered.

Alternatively, described power interface provides 12V-24V voltage range.

Alternatively, described power interface is connected with main control unit.

Alternatively, described interface is air plug interface.

Alternatively, described air plug interface is 5 core air plug mouths.

Alternatively, described air plug interface comprises input interface, output interface and sensor interface.

Alternatively, described air plug interface also comprises USB interface.

Alternatively, the switching device that described can be used for connects vibrating string type sensor also comprises: communication unit, is connected with described main control unit.

Alternatively, described communication unit is Zigbee module.

As can be seen from the above technical solutions, the utlity model has following advantage:

The sensor switching device that the utility model provides adopts monolithic design, directly obtain the different sensors being connected with interface, and the metrical information of sensor input is sent to storage unit gathers preservation, solve existing sensor and be directly connected the technology that could gather metrical information with collecting device, and the collecting device causing cannot gather various engineering metrical information simultaneously, and many wiring complexity that cable wiring access brings, volume is large, power consumption high-technology problem, further reduced the difficulty of outdoor collection metrical information, the box-like structure of box body design simultaneously makes device volume less, can share same communication line access background collector, and collecting amount is unrestricted, each switching device can adopt parallel structure to install, therefore mounting distance is unrestricted, on-the-spot networking, saved the installation of large-size box structure, its wiring is simple, can miniaturization install nearby, less demanding to backstage collecting device, and in accessible on-the-spot other backstage checkout equipments or user computer, can be widely used in outdoor various environment, it is convenient to install, applicability is strong, can directly connect multiple sensors, especially when connecting vibrating string type sensor, can greatly reduce user's economic input, also reduce operating personnel's workload simultaneously.

Accompanying drawing explanation

A kind of structural representation that can be used for connect the switching device of vibrating string type sensor of Fig. 1 for providing in the utility model embodiment;

Illustrate: 1, box body; 11, main control unit; 12, storage unit; 13, bus matrix; 14, interface; 15, power interface; 141, input interface; 142, output interface; 143, sensor interface.

Embodiment

In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art; to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below; apparently; that the following describes is only embodiment more of the present utility model; for those of ordinary skills; do not paying under the prerequisite of creative work; can also obtain according to these drawings and Examples other technical scheme; therefore, these technical schemes ought to be received the protection domain into the application.

The utility model embodiment discloses a kind of switching device that can be used for connecting vibrating string type sensor, not only solve the collecting device that prior art causes and cannot gather various engineering metrical information simultaneously, and the technical matters of many cable wiring accesses, thereby reduced the difficulty of outdoor collection metrical information, and the small volume of box-like structure design, only need bus shared, and each switching device adopts parallel syndeton, can be applied to outdoor various environment.

ZigBee is a kind of wireless network protocol of low speed short-distance transmission, is the low-power consumption territory fidonetFido based on IEEE802.15.4 standard.

Refer to Fig. 1, this switching device comprises box body 1, in described box body 1, main control unit 11 is installed, storage unit 12, and bus matrix 13 and at least 3 interfaces 14, it should be noted that, this interface 14 can be RS485 communication interface, does not specifically limit herein;

Described box body 1 outside has at least 3 for embedding the hollow mouth of described interface 14;

Described bus matrix 13 is connected with described interface 14 by cable;

Described bus matrix 13, described storage unit 12 is connected between two with described main control unit 11, it should be noted that, and aforesaid storage unit 12 can be flash storer, does not specifically limit herein.

Alternatively, described box body 1 also has for embedding the power end of power interface 15, and for giving described main control unit 11, described storage unit 12 and described bus matrix 13 are powered.

Alternatively, described power interface 15 provides 12V-24V voltage range.

Alternatively, described power interface 15 is connected with main control unit 11.

Alternatively, described interface 14 is air plug interface.

Alternatively, described air plug interface is 5 core air plug mouths.

Alternatively, described air plug interface comprises input interface 141, output interface 142 and sensor interface 143.

Alternatively, described air plug interface also comprises USB interface.

It should be noted that, aforesaid input interface 141, the specific explanations of the connection of each core pin of 5 core air plug mouths of output interface 142 and sensor interface 143 and USB interface is as follows:

Input interface 141

1	2	3	4	5
					VCC	GND	485A	485B	GND

Output interface 142

1	2	3	4	5
					VCC	GND	485A	485B	GND

Sensor interface 143

1	2	3	4	5
					StringA	StringB	Temperature and resistance	Temperature and resistance	GND

USB interface

1	2	3	4	5
					?	USB+	USB-	GND	?

Be understandable that, above mentioned input interface 141, the sequence number of each core pin of 5 core air plug mouths of output interface 142 and sensor interface 143 and USB interface is known technology, so accompanying drawing and herein just no longer specifically repeating.

Alternatively, described switching device can further include: communication unit, be connected with described main control unit, and this communication unit is Zigbee module.

That the structure that connects can be used for that utility model embodiment is provided the switching device of vibrating string type sensor is described in detail above, for ease of understanding, to the sensor shown in Fig. 1 be connected to the detailed process of this switching device with a concrete application scenarios below, application examples comprises:

Out of doors under occasion, first by the power interface 15 on power lead and box body 1, for providing 12V-24V magnitude of voltage, switching device makes its work, sensor interface 15 is connected with extraneous vibrating string type sensor, reinforcement tensiometer for example, earth pressure gauge, pore pressure gauge, anchor dynamometer, concrete strain gauge etc., specifically do not limit herein, the metrical information of aforesaid vibrating string type sensor, such as frequency values etc., by sensor interface 15, metrical information being sent to bus matrix 13 gathers and keeps to storage unit 12, after a plurality of metrical information collections are finished, unification exports the metrical information of storage unit 12 to be connected with output interface 142 receiving equipment by bus matrix 13 by metrical information and receives.

The switching device that the utility model provides adopts monolithic design, directly obtain the different sensors being connected with interface, and the metrical information of sensor input is sent to storage unit gathers preservation, solve existing sensor and be directly connected the technology that could gather metrical information with collecting device, and the collecting device causing cannot gather various engineering metrical information simultaneously, and many wiring complexity that cable wiring access brings, volume is large, power consumption high-technology problem, further reduced the difficulty of outdoor collection metrical information, the box-like structure of box body design simultaneously makes device volume less, can share same communication line access background collector, and collecting amount is unrestricted, each switching device can adopt parallel structure to install, signal passes through digital transmission, therefore mounting distance is unrestricted, on-the-spot networking, saved the installation of large-size box structure, its wiring is simple, peripheral circuit is few, reliability is high, cost is low, can miniaturization install nearby, less demanding to backstage collecting device, and in accessible on-the-spot other backstage checkout equipments or user computer, can be widely used in outdoor various environment, it is convenient to install, applicability is strong, can directly connect multiple sensors, greatly reduce user's economic input, also reduced operating personnel's workload simultaneously.

Above a kind of sensor switching device provided by the utility model is described in detail, for one of ordinary skill in the art, thought according to the utility model embodiment, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.

Claims

1. a switching device that can be used for connecting vibrating string type sensor, comprises box body, it is characterized in that, in described box body, main control unit is installed, storage unit, bus matrix and at least 3 interfaces; Described box body outside has at least 3 for embedding the hollow mouth of described interface; Described bus matrix is connected with described interface by cable; Described bus matrix, described storage unit is connected between two with described main control unit.

2. switching device according to claim 1, is characterized in that, described box body also has for embedding the power end of power interface, and for giving described main control unit, described storage unit and described bus matrix are powered.

3. switching device according to claim 2, is characterized in that, described power interface provides 12V-24V voltage range.

4. switching device according to claim 3, is characterized in that, described power interface is connected with main control unit.

5. switching device according to claim 1, is characterized in that, described interface is air plug interface.

6. switching device according to claim 5, is characterized in that, described air plug interface is 5 core air plug mouths.

7. switching device according to claim 6, is characterized in that, described air plug interface comprises input interface, output interface and sensor interface.

8. switching device according to claim 7, is characterized in that, described air plug interface also comprises USB interface.

9. switching device according to claim 1, is characterized in that, also comprises: communication unit, is connected with described main control unit.

10. switching device according to claim 9, is characterized in that, described communication unit is Zigbee module.