CN207622860U - One kind being suitable for indoor vibration monitoring terminal - Google Patents

Abstract

To solve the problems, such as that existing indoor type vibration monitoring terminal installation maintenance is inconvenient, sensitivity is low, poor anti jamming capability, the utility model provides a kind of suitable for indoor vibration monitoring terminal, including collecting unit and control unit；Collecting unit and control unit use split-type design, are connected by shielded cable；Collecting unit includes three vibrating sensors, is separately positioned in the X, Y, Z axis of rectangular coordinate system in space；Control unit includes control circuit, signal conditioning circuit, A/D conversion circuits, signal isolation circuit, power supply unit and Ethernet interface；The analog voltage signal that signal conditioning circuit exports collecting unit is amplified, filters；Analog voltage signal is converted into digital signal by A/D conversion circuits；Signal isolation circuit is transferred to control circuit after the digital signal is isolated；Control circuit obtains vibration monitoring result to Digital Signal Processing.The utility model is convenient for installation and maintenance, high sensitivity, and anti-interference ability is good.

Description

One kind being suitable for indoor vibration monitoring terminal

Technical field

The utility model is related to vibration monitoring fields, and in particular to one kind being suitable for indoor vibration monitoring terminal.

Background technology

Vibration monitoring terminal is a kind of vibration monitoring equipment of profession, is widely used in seismic monitoring, industrial vibration prison Survey, the monitoring that builds a bridge, style evolvement monitoring etc..

Existing indoor type vibration monitoring terminal has the following problems：

1, collecting unit and control unit design for integral type, thus equipment is heavier, and installation maintenance is more complex；

2, can not remotely monitor, can only field monitoring, monitoring when need staff scene waiting facilities gathered data, Thus it is not suitable for monitoring on-line for a long time；

3, can only one direction acquire vibration data, sensitivity is relatively low, and anti-interference ability is relatively low.

Invention content

Insufficient existing for existing indoor type vibration monitoring terminal to solve, the utility model provides a kind of suitable for interior Vibration monitoring terminal, have convenient for installation and maintenance, high sensitivity, the good feature of anti-interference ability.

The technical solution of the utility model：

One kind being suitable for indoor vibration monitoring terminal, is characterized in that：Including collecting unit and control unit；It adopts Collect unit and control unit uses split-type design, is separately positioned in respective mounting shell body, the two passes through shielded cable phase Even；

Collecting unit includes three vibrating sensors, is separately positioned on the X-axis, Y-axis and Z axis side of rectangular coordinate system in space To；

Control unit include control circuit, signal conditioning circuit, A/D conversion circuits, signal isolation circuit, power supply unit, Ethernet interface；Signal conditioning circuit be used for receive collecting unit output vibration voltage signal, and to the voltage signal into Row amplification, filtering；A/D conversion circuits are used to the analog voltage signal that signal conditioning circuit exports being converted into digital signal；Letter Number isolation circuit after the digital signal that A/D conversion circuits export is isolated for being transferred to control circuit；Control circuit is used It is handled in the digital signal, obtains vibration monitoring result；Power supply unit is used for as A/D conversion circuits, signal condition Circuit, signal isolation circuit and control circuit provide power supply.

Further, above-mentioned control circuit includes ARM and FPGA main control chips.

Further, above-mentioned A/D conversion circuits are using the high-precision adc chip for meeting maximum 24bit resolution ratio.

Further, it is also associated with TF card interface in above-mentioned control circuit.

Further, it is also associated with USB interface in above-mentioned control circuit.

Further, above-mentioned power supply unit includes that power supply adaptor, power circuit, isolated power supply circuit and internal cell fill Discharge circuit；

Power supply adaptor for realizing monitoring exterior of terminal alternating current to 15V DC power supplies conversion；

Power circuit is used to power to isolated power supply circuit；

Isolated power supply circuit is used to carry for A/D conversion circuits, signal conditioning circuit, signal isolation circuit and control circuit For reliable and stable isolated power supply；

Internal cell charge-discharge circuit is used to, when monitoring terminal has external power supply power supply, charge to the power circuit.

Further, above-mentioned vibrating sensor uses the Ultra-low Frequency Vibration Sensor of frequency≤100Hz.

Compared with prior art, the utility model has the advantages that：

1, consider in practical application, need by being mounted on monitored object of collecting unit/near, and to control unit Installation site have no particular/special requirement, therefore the utility model collecting unit and control unit use split-type design, compared to existing There are the monitoring terminal of unitary design, the weight of installation section to greatly reduce, installation maintenance is more convenient.

2, there is Ethernet interface in the control circuit of the utility model, the vibration data of acquisition can be uploaded to long-range clothes Business device, realizes remote online monitoring, is applicable to the occasion of long term monitoring.

3, the collecting unit of the utility model includes the Ultra-low Frequency Vibration Sensor of three frequency≤100Hz, is located at In the X, Y, Z axis of space coordinates, the vibration signal on three directions can be acquired simultaneously, improves the sensitivity of acquisition.

4, the utility model analog to digital conversion circuit is completed high using the high-precision adc chip for meeting maximum 24bit resolution ratio Precision A/D conversions, and transformed digital signal is transmitted further to control circuit after isolation, therefore it is sensitive with higher acquisition Degree and stronger anti-interference ability.

5, the control circuit of the utility model synchronizes sampling using large scale integrated circuit FPGA cooperations ARM, can expire The demand of sufficient multi-channel high-speed synchronous acquisition, collecting efficiency higher.

6, the control unit of the utility model has USB interface, and user is facilitated to export monitoring data.

7, the utility model power supply unit can avoid using isolated power supply circuit to other circuits power supply of monitoring terminal inner Interference of the externally fed power supply to monitoring terminal inner circuit, further enhances anti-interference ability.

Description of the drawings

Fig. 1 is the principle schematic of the utility model embodiment；

Fig. 2 is the utility model collecting unit and the data flow schematic diagram of control unit.

Specific implementation mode

Below in conjunction with attached drawing, the utility model is described in further detail.

It is provided in this embodiment to be suitable for indoor vibration monitoring terminal, including collecting unit and control list referring to Fig. 1 Member；Collecting unit and control unit use split-type design, are separately positioned in respective mounting shell body, the two passes through shielding line Cable is connected.

Collecting unit include three frequency≤100Hz Ultra-low Frequency Vibration Sensor (sensor of this type have spirit Sensitivity height, small feature), three vibrating sensors are separately positioned on the X-axis, Y-axis and Z axis side of rectangular coordinate system in space To, pass through three vibrating sensors simultaneously acquire three directions vibration signal.

Control unit include control circuit, signal conditioning circuit, A/D conversion circuits, signal isolation circuit, power supply unit, USB interface, TF card interface and Ethernet interface；

Signal conditioning circuit is used to receive the vibration voltage signal of collecting unit output, and externally input weak voltage is believed It number is amplified, filters；A/D conversion circuits are that the analog voltage signal for exporting signal conditioning circuit is converted into digital signal； Signal isolation circuit is used to the digital signal that A/D conversion circuits export being transferred to control circuit after isolation, makes monitoring terminal Reach extremely strong anti-interference ability；Control circuit handles the digital signal of acquisition, obtains vibration monitoring result.This implementation In example, control circuit includes ARM and FPGA main control chips, and FPGA main control chips have high-speed synchronous data communication function, can be with Meets the needs of multi-channel high-speed synchronous acquisition, ARM main control chips are mainly responsible for the work(such as operation data storage, ethernet communication Energy；It uses and meets the high-precision adc chip of maximum 24bit resolution ratio to realize that high-precision A/D is converted.

USB interface includes USB HUB circuits and USB HOST circuits；

TF card interface uses the TF card driving circuit of 1 road SDIO interfaces, supports large capacity I F cards and MicroSD cards, can carry For programming program function, it is provided simultaneously with the function of storage historical vibration data.

Ethernet interface, for collected vibration data to be uploaded to remote server；The present embodiment uses 10M/ 100M Ethernet interfaces.

In the present embodiment, power supply unit includes power supply adaptor, power circuit, isolated power supply circuit and internal cell charge and discharge Circuit；Power supply adaptor monitors terminal for realizing the conversion of monitoring exterior of terminal alternating current to 15V DC power supplies to meet Supply voltage requirement；Power circuit is used to power to isolated power supply circuit；Isolated power supply circuit is used for as A/D conversion circuits, letter Number modulate circuit, signal isolation circuit and control circuit provide reliable and stable isolated power supply, while can avoid externally fed Interference of the power supply to these circuits enhances anti-interference ability；Internal cell charge-discharge circuit, for having external electricity in monitoring terminal It is charged when source to monitor the power circuit of terminal inner.

The course of work of the utility model：

1, vibration signals collecting

Vibrating sensor in collecting unit gives birth to electric principle using moving-coil magnetic, and the signal that vibrating sensor acquires is converted into Electric signal is transferred to the signal conditioning circuit of control unit by shielded cable.

2, control unit data acquire

The electric signal that collecting unit exports first is amplified to collectable voltage by the signal conditioning circuit of control unit Then range of signal is filtered, then the voltage signal that signal conditioning circuit exports is converted to digital letter by A/D conversion circuits Number, which is transferred to control circuit after signal isolation circuit is isolated, and control circuit is by believing the number acquired Number (being handled respectively the corresponding digital signal in each direction) carries out data processing, obtains the vibration monitoring result in three directions； The method of data processing is existing method.

3, real time data uploads

Above-mentioned vibration monitoring result is packaged by control circuit according to Data Transport Protocol format, is sent to far by Ethernet Journey server.

4, history data store

Control circuit stores above-mentioned vibration monitoring result in TF card, when the query history for receiving remote server and sending out After request of data, control circuit reads data, is packaged according to Data Transport Protocol format, long-range clothes are sent to by Ethernet Business device.

5, historical data exports

When user needs to export historical data, control circuit can monitor corresponding vibration according to user's selected time As a result it reads, is exported to external storage equipment, such as USB flash disk by USB interface.

Claims (7)

1. one kind being suitable for indoor vibration monitoring terminal, it is characterised in that：Including collecting unit and control unit；Collecting unit Split-type design is used with control unit, is separately positioned in respective mounting shell body, the two is connected by shielded cable；

Collecting unit includes three vibrating sensors, is separately positioned on the X-axis, Y-axis and Z-direction of rectangular coordinate system in space；

Control unit includes control circuit, signal conditioning circuit, A/D conversion circuits, signal isolation circuit, power supply unit, ether Network interface；Signal conditioning circuit is used to receive the vibration voltage signal of collecting unit output, and is put to the voltage signal Greatly, it filters；A/D conversion circuits are used to the analog voltage signal that signal conditioning circuit exports being converted into digital signal；Signal every From circuit for being transferred to control circuit after the digital signal that A/D conversion circuits export is isolated；Control circuit for pair The digital signal is handled, and vibration monitoring result is obtained；Power supply unit be used for for A/D conversion circuits, signal conditioning circuit, Signal isolation circuit and control circuit provide power supply.

2. according to claim 1 be suitable for indoor vibration monitoring terminal, it is characterised in that：The control circuit includes ARM and FPGA main control chips.

3. according to claim 1 be suitable for indoor vibration monitoring terminal, it is characterised in that：The A/D conversion circuits Using the high-precision adc chip for meeting maximum 24bit resolution ratio.

4. according to claim 1 be suitable for indoor vibration monitoring terminal, it is characterised in that：In the control circuit also It is connected with TF card interface.

5. according to claim 1 be suitable for indoor vibration monitoring terminal, it is characterised in that：In the control circuit also It is connected with USB interface.

6. according to any one of claims 1 to 5 be suitable for indoor vibration monitoring terminal, it is characterised in that：The power supply Unit includes power supply adaptor, power circuit, isolated power supply circuit and internal cell charge-discharge circuit；

Power supply adaptor for realizing monitoring exterior of terminal alternating current to 15V DC power supplies conversion；

Power circuit is used to power to isolated power supply circuit；

Isolated power supply circuit can for being provided for A/D conversion circuits, signal conditioning circuit, signal isolation circuit and control circuit By stable isolated power supply；

Internal cell charge-discharge circuit is used to, when monitoring terminal has external power supply power supply, charge to the power circuit.

7. according to any one of claims 1 to 5 be suitable for indoor vibration monitoring terminal, it is characterised in that：The vibration Sensor uses the Ultra-low Frequency Vibration Sensor of frequency≤100Hz.