CN205333191U - Vibration monitor - Google Patents
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- CN205333191U CN205333191U CN201521131797.5U CN201521131797U CN205333191U CN 205333191 U CN205333191 U CN 205333191U CN 201521131797 U CN201521131797 U CN 201521131797U CN 205333191 U CN205333191 U CN 205333191U
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Abstract
The utility model provides a vibration monitor, this vibration monitor includes: vibration signal transducer, digital signal processor, relay, alarm, AD signal converter, DA signal converter and analog signal output interface, wherein, vibration signal transducer is connected with the digital signal processor electricity, digital signal processor is connected with the relay electricity, the relay is connected with the alarm electricity, AD signal converter connects between vibration signal transducer and digital signal processor, DA signal converter is connected with the digital signal processor electricity, and DA signal converter still exports electrical connection interface with analog signal. The technical scheme of the utility model can improve the information processing volume and transmission volume of vibration signal monitor.
Description
Technical Field
The utility model relates to a vibration monitoring instrument technical field, more specifically say, relate to a vibration monitor.
Background
In the field of industrial production, the vibration of instruments and equipment can often reflect the operation condition of the instruments, and a vibration monitor is a special instrument for collecting, recording and storing the vibration of monitored equipment for a long time on site so as to record the vibration condition of the instruments and equipment in detail, reflect the operation of the instruments and equipment in time and provide corresponding decision basis for operators.
In the vibration monitor in the related art, most of the analog quantity input and output devices are used for measuring vibration data of a few channels, the analog quantity signals are used for collecting and outputting information, the vibration monitor usually only transmits vibration signals, and the information which can be processed and transmitted is limited.
In summary, how to increase the information processing amount and transmission amount of the vibration monitor is a technical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a vibration monitor's technical scheme to the vibration monitor among the prior art that introduces among the solution background art can handle the limited problem of information with the transmission.
In order to solve the technical problem, the utility model provides a following technical scheme:
the utility model provides a vibration monitor, this vibration monitor includes:
the device comprises a vibration signal sensor, a digital signal processor, a relay, an alarm, an A/D signal converter, a D/A signal converter and an analog signal output interface; wherein the vibration signal sensor is electrically connected with the digital signal processor; the digital signal processor is electrically connected with the relay; the relay is electrically connected with the alarm; the A/D signal converter is connected between the vibration signal sensor and the digital signal processor; the D/A signal converter is electrically connected with the digital signal processor, and the D/A signal converter is also electrically connected with the analog signal output interface.
Preferably, the vibration signal sensor includes: the three-axis vibration sensor is arranged in the vibration monitor shell; the external vibration monitoring channel is arranged outside the vibration monitor shell and connected with the digital signal processor; the three-axis vibration sensor comprises three acceleration sensors with acceleration measuring directions perpendicular to each other.
Preferably, the vibration monitor further comprises:
a shutdown protection controller, the digital signal processor comprising a signal filter and a shock signal comparator; wherein,
the signal filter is electrically connected with the vibration signal sensor, and the impact signal comparator is electrically connected with the signal filter;
the impact signal comparator is also electrically connected with the relay, and the relay is electrically connected with the alarm;
the shock signal comparator is further electrically connected with the shutdown protection controller, and the shutdown protection controller is connected with monitored equipment outside the vibration monitor shell.
Preferably, the vibration monitor further comprises: the vibration pulse self-checking interface is electrically connected with the digital signal processor and is used for receiving a vibration pulse self-checking signal sent by external processing equipment; the vibration pulse self-checking signal is used for controlling the digital signal processor to detect the digital signal processor, the relay, the alarm and the vibration signal sensor;
and the impact pulse self-checking interface is electrically connected with the digital signal processor and used for receiving an impact pulse self-checking signal sent by external processing equipment, and the impact pulse self-checking signal is used for controlling the digital signal processor to detect the vibration signal sensor, the shutdown protection controller, the signal filter and the impact signal comparator.
The self-checking restorer is electrically connected with the relay; the self-checking resetter is used for sending a reset pulse to the relay.
Preferably, the digital signal processor comprises a first digital signal processor and a second digital signal processor; wherein the first digital signal processor is connected between the vibration signal sensor and the second digital signal processor; the second digital signal processor is electrically connected with the relay.
Preferably, the second digital signal processor further comprises: a configuration parameter receiver, a configuration parameter transmitter and a configuration parameter memory; the configuration parameter receiver is electrically connected with the external processing equipment and is also electrically connected with the configuration parameter transmitter and the configuration parameter memory respectively; the configuration parameter transmitter is electrically connected with the first digital signal processor.
Preferably, the digital signal processor is also electrically connected to the external processing device via a communication bus, including a CAN communication bus and/or a Profibus communication bus.
Preferably, the alarm comprises a signal indicator light, the signal indicator light comprising: system alarm indicator lamp, danger alarm indicator lamp, communication indicator lamp, power indicator lamp.
Preferably, the digital signal processor includes: a vibration signal calculator electrically connected to the signal filter; a vibration signal comparator electrically connected to the vibration signal calculator; the vibration signal comparator is electrically connected with the relay.
The utility model provides a vibration monitor, through setting up the vibration signal sensor and gathering the vibration signal of monitored control equipment, and transmit vibration signal to digital signal processor, when digital signal processor judges that this vibration signal goes wrong, can send control signal to the relay through controlling the relay, report to the police through relay control alarm, simultaneously in this application, use AD signal converter between vibration signal sensor and digital signal processor, can realize converting the vibration signal of analog quantity form into the vibration signal of digital quantity form, facilitate the interaction of data between digital signal processor and the vibration signal sensor, and the vibration signal that vibration signal sensor transmitted to digital signal processor, can handle with the form of digital quantity in digital signal processor, digital signal processor can dispose vibration signal sensor according to this vibration signal, and finally, a D/A signal converter is arranged between the digital signal processor and the analog signal output interface, so that the vibration signal can be output in an analog quantity form.
Can derive through above-mentioned working process, the utility model provides a vibration monitor through set up AD signal converter between vibration signal sensor and digital signal processor and set up the DA converter between digital signal processor and analog signal output interface, can improve digital signal processor to the handling capacity and the transmission capacity of information.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
Fig. 1 is a schematic structural view of a first type of vibration monitor according to an exemplary embodiment of the present invention;
fig. 2 is a schematic structural view of a second type of vibration monitor according to an exemplary embodiment of the present invention;
fig. 3 is a schematic diagram of a third vibration monitor according to an exemplary embodiment of the present invention;
fig. 4 is a schematic diagram of a fourth vibration monitor according to an exemplary embodiment of the present invention;
Fig. 5 is a schematic structural diagram of a fifth type of vibration monitor according to an exemplary embodiment of the present invention;
fig. 6 is a schematic flow chart illustrating a method of operating a vibration monitor according to an exemplary embodiment of the present invention.
The correspondence of the respective structures shown in fig. 1 to 6 with the reference numerals is as follows:
1-vibration signal sensor, 101-triaxial vibration sensor, 102-external vibration monitoring channel, 2-digital signal processor, 21-signal filter, 22-impact signal comparator, 23-first digital signal processor, 24-second digital signal processor, 241-configuration parameter receiver, 242-configuration parameter transmitter, 243-configuration parameter memory, 25-vibration signal calculator, 26-vibration signal comparator, 3-relay, 4-alarm, 5-A/D signal converter, 6-D/A signal converter, 7-analog signal output interface, 9-shutdown protection controller, 10-vibration pulse self-checking interface, 11-impact pulse self-checking interface, 12-self-checking reset, 12-configuration parameter transmitter, 2-vibration signal processor, 21-vibration signal filter, 3-impact signal comparator, 23-first digital signal processor, 24-second digital signal processor, 241-configuration parameter receiver, 242-configuration parameter transmitter, 243-configuration parameter memory, 25-, 13-external processing device, 14-communication bus, 15-switching value interface.
Detailed Description
The embodiment of the utility model provides a vibration monitor has solved the less problem of information processing volume and transmission volume of the vibration monitor among the prior art introduced in the background art.
In order to make those skilled in the art better understand the technical solution of the embodiments of the present invention and make the above objects, features and advantages of the embodiments of the present invention more obvious and understandable, the following description of the technical solution of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a first vibration monitor according to an exemplary embodiment of the present invention. As shown in fig. 1, the embodiment of the utility model provides a vibration monitor, include:
a vibration signal sensor 1, a digital signal processor 2, a relay 3, an alarm 4, an A/D (analog/digital) signal converter 5, a D/A (digital/analog) signal converter 6 and an analog signal output interface 7; wherein,
the vibration signal sensor 1 is electrically connected with the digital signal processor 2; the digital signal processor 2 is electrically connected with the relay 3; the relay 3 is electrically connected with the alarm 4.
Gather the vibration signal of monitored control equipment through vibration signal sensor 1, acquire the vibration condition of monitored control equipment, then transmit vibration signal to digital signal processor 2, handle and judge by digital signal processor 2, when digital signal processor 2 detects that vibration signal appears unusually, digital signal processor 2 sends control command to relay 3, thereby make relay 3 under this control command's effect, the alarm 4 that control and this relay 3 link to each other sends alarm signal, realize the early warning and the warning to the vibration condition of monitored control equipment, prevent that great trouble from appearing in the detected equipment.
The A/D signal converter 5 is connected between the vibration signal sensor 1 and the digital signal processor 2; the D/A signal converter 6 is electrically connected with the digital signal processor 2, and the D/A signal converter 6 is also electrically connected with the analog signal output interface 7.
An A/D signal converter 5 is arranged between the vibration signal sensor 1 and the digital signal processor 2, so that the vibration signals in an analog quantity form can be converted into vibration signals in a digital quantity form, and data interaction between the digital signal processor 2 and the vibration signal sensor 1 is facilitated; meanwhile, through the a/D signal converter 5, the digital signal processor 2 not only can interact with the vibration signal sensor 1 to generate a vibration signal, but also can configure configuration parameters of the vibration signal sensor 1 according to the vibration signal and send the configuration parameters to the vibration signal sensor 1, so as to realize the configuration of the vibration signal sensor 1, and after the vibration signal is converted into a digital quantity form, the digital signal processor 2 can process the vibration signal in a digital quantity form, so as to improve the processing speed of the vibration signal and the processing data quantity of the vibration signal, and a D/a signal converter 6 is arranged between the digital signal processor 2 and the analog signal output interface 7, so as to realize the output of the vibration signal in an analog quantity form. In summary, it can be seen from the above process that the vibration monitor of the present embodiment can improve the processing amount and the transmission amount of information by the digital signal processor 2 by providing the a/D signal converter 5 between the vibration signal sensor 1 and the digital signal processor 2 and providing the D/a converter between the digital signal processor 2 and the analog signal output interface 7.
As shown in fig. 1, the vibration signal sensor 1 further includes: a three-axis vibration sensor 101 disposed inside the vibration monitor housing; and an external vibration monitoring channel 102 arranged outside the vibration monitor shell and connected with the digital signal processor 2; wherein the three-axis vibration sensor 101 includes 3 acceleration sensors whose acceleration directions are perpendicular to each other. The digital signal processor 2 is also electrically connected to an external processing device 13 via a communication bus 14, wherein the communication bus 14 comprises a CAN communication bus and/or a Profibus communication bus 14. And communicates the switching value signal with the external processing device 13 through the switching value interface 15.
This vibration monitor is firmly fixed with monitored equipment, can monitor the holistic vibration condition of monitored equipment through set up triaxial vibration sensor 101 in vibration signal sensor 1 inside, this triaxial vibration sensor 101 includes 3 acceleration sensor of acceleration direction mutually perpendicular simultaneously, can measure the acceleration on 3 mutually perpendicular directions of monitored equipment, thereby can realize the monitoring to the vibration condition of monitored equipment multi-direction, multi-angle, avoid certain orientation to go up to take place the vibration and the condition that can not monitor. Simultaneously there is whole not taking place the vibration by monitoring equipment, and the condition of the inside some structure module of monitored equipment taking place the vibration, therefore this vibration signal sensor 1 still including set up in vibration monitor casing outside, and the external vibration monitoring channel 102 who links to each other with digital signal processor 2, this external vibration monitoring channel 102 links to each other with each structure module inside monitored equipment respectively to the realization is to the function of monitoring by the vibration condition of the inside structure module of monitored equipment.
In order to protect the monitored equipment and reduce the failure of the monitored equipment under the impact of high intensity, as shown in fig. 2, in addition to the structural modules of the vibration monitor mentioned in the embodiment shown in fig. 1, the local vibration monitor further includes: a shutdown protection controller 9, the digital signal processor 2 comprises a signal filter 21 and an impact signal comparator 22; the signal filter 21 is electrically connected with the vibration signal sensor 1, the impact signal comparator 22 is also electrically connected with the signal filter 21, the impact signal comparator 22 is also electrically connected with the relay 3, and the relay 3 is electrically connected with the alarm 4;
the vibration condition that monitored equipment received can be monitored through setting up vibration signal sensor 1 to send vibration signal to digital signal processor 2 in time, can reflect the impact strength that monitored equipment received through this vibration signal, for example through vibration signal extraction acceleration information, calculate the displacement volume of monitored equipment according to this acceleration information, reflect the size of the impact strength that monitored equipment received through this displacement volume.
The digital signal processor 2 comprises a signal filter 21 and an impact signal comparator 22, the signal filter 21 can filter the impact signal according to the impact strength of the monitored equipment reflected by the vibration signal, clutter in the impact signal is filtered, the accurate impact signal of a certain characteristic wave band is obtained, the impact signal comparator 22 can judge whether the impact strength of the monitored equipment is greater than or equal to a preset impact strength threshold value or not according to the impact signal, and when the impact strength of the monitored equipment is greater than or equal to the preset impact strength threshold value, necessary measures are taken to protect the monitored equipment.
For example: the impact signal comparator 22 can judge whether the impact strength of the monitored equipment is greater than or equal to the first impact strength threshold value or not according to the impact signal, and if the impact strength of the monitored equipment is greater than or equal to the first impact strength threshold value, the impact signal comparator 22 sends a control instruction to the relay 3, so that the relay 3 controls the alarm 4 to send an alarm signal.
The impact signal comparator 22 is also electrically connected to the shutdown protection controller 9, and the shutdown protection controller 9 is also connected to the monitored equipment outside the vibration monitor housing.
The impact signal comparator 22 can judge whether the impact strength of the monitored equipment is greater than or equal to the second impact strength threshold value according to the impact strength of the monitored object reflected by the vibration signal, and when the impact strength of the monitored equipment is greater than or equal to the second impact strength threshold value, the impact signal comparator 22 sends a control instruction to the shutdown protection controller 9 connected with the monitored equipment, so that the shutdown protection controller 9 sends a shutdown signal to the monitored equipment connected with the vibration monitor in time, and loss of the monitored equipment caused by impact is reduced.
Please refer to fig. 3, fig. 3 is a schematic structural diagram of a third vibration monitor according to an exemplary embodiment of the present invention, and as shown in fig. 3, the vibration monitor further includes, in addition to the structures shown in fig. 1: the vibration pulse self-checking interface 10 is electrically connected with the digital signal processor 2 and is used for receiving a self-checking pulse signal sent by an external processing device 13; the self-checking pulse signal is used for controlling the digital signal processor 2 to detect the digital signal processor 2, the relay 3, the alarm 4 and the vibration signal sensor 1.
An external processing device 13 connected to the vibration monitor is received through a vibration pulse self-test interface 10, such as: the vibration pulse self-checking signal sent by PLC (programmable logic controller), microprocessor CPU and the like carries out self-checking on the internal equipment of the vibration monitor, thereby being capable of finding self faults in time. The self-checking structure comprises: digital signal processor 2, relay 3, alarm 4 and vibration signal sensor 1. When detecting that digital signal processor 2, relay 3, alarm 4 and vibration signal sensor 1 break down, output control signal to relay 3 through digital signal processor 2 for relay 3 controls alarm 4 who is connected with this relay 3 and sends alarm signal.
As shown in fig. 3, the vibration monitor further includes: and the impact pulse self-checking interface 11 is electrically connected with the digital signal processor 2 and is used for receiving an impact pulse self-checking signal sent by an external processing device 13, and the impact pulse self-checking signal is used for controlling the digital signal processor 2 to detect the vibration signal sensor 1, the shutdown protection controller 9, the signal filter 21 and the impact signal comparator 22.
The digital signal processor 2 receives an impact pulse self-checking signal sent by an external processing device 13 connected with the vibration monitor through a vibration pulse self-checking interface 10, and then according to the requirement of the impact pulse self-checking signal, detects the vibration signal sensor 1, the shutdown protection controller 9, the signal filter 21 and the impact signal comparator 22, thereby timely finding out the fault condition of the structure related to the impact detection, when the fault condition of the structure related to the impact detection is found out, the digital signal processor 2 outputs a control signal to the relay 3, so that the relay 3 controls the alarm 4 connected with the relay 3 to send out an alarm signal, therefore, the faults of the vibration signal sensor 1, the shutdown protection controller 9, the signal filter 21 and the impact signal comparator 22 can be found in time, and the loss of the structure related to the impact detection is reduced.
As shown in fig. 3, the local oscillation monitor further includes: a self-test restorer 12 electrically connected to the relay 3; the self-test resetter 12 is configured to send a reset pulse to the relay 3.
By arranging the self-checking reset device 12 and connecting the self-checking reset device with the relay 3, the self-checking reset device 12 sends reset pulse to the relay 3 to control the relay 3 not to send signals to the alarm 4 any more, so that the alarm 4 is recovered to a normal state.
As shown in fig. 1 and 3, the digital signal processor 2 includes a first digital signal processor 23 and a second digital signal processor 24; wherein the first digital signal processor 23 is connected between the vibration signal sensor 1 and the second digital signal processor 24; the second digital signal processor 24 is electrically connected to the relay 3.
The first digital signal processor 23 is connected between the vibration signal sensor 1 and the second digital signal processor 24, and the second digital signal processor 24 is connected with the relay 3 in addition to the first digital signal processor 23, wherein, the vibration monitor uses the second digital signal processor 24 as a main processor, the first digital signal processor 23 is an auxiliary processor, when one of the first digital signal processor 23 and the second digital signal processor 24 has a fault, the other digital signal processor can replace the faulty digital signal processor to perform the vibration signal monitoring work. The first digital signal processor 23 is mainly responsible for operations such as acquisition, filtering and calculation of vibration data; the second dsp 24 provides the first dsp 23 with configuration parameters including types of various filters, cut-off frequencies of various filters, measurement ranges, and channel configuration parameters of calculation frequency bands, and in addition, the second dsp 24 is responsible for communicating with the external processing device 13 (e.g., PLC, processor) and updating the usage status and configuration parameters of the vibration monitoring apparatus. Specifically, for example: the second digital signal processor 24 reads the vibration data from the first digital signal processor 23 at regular time, compares the vibration data with the internally stored vibration alarm value, alarms if the alarm threshold is exceeded, and converts the read vibration data into analog quantity form through the D/a signal converter 6 for output. When communicating with the external processing device 13, the second digital signal processor 24 is also responsible for data transfer, parameter update and saving between the vibration monitor and the external processing device 13.
As shown in fig. 4, the second digital signal processor 24 further includes: a configuration parameter receiver 241, a configuration parameter transmitter 242, and a configuration parameter memory 243; the configuration parameter receiver 241 is electrically connected to the external processing device 13, and is also electrically connected to the configuration parameter transmitter 242 and the configuration parameter memory 243, respectively; the configuration parameter transmitter 242 is electrically connected to the first digital signal processor 23.
As shown in fig. 5, the digital signal processor 2 includes: a vibration signal calculator 25 electrically connected to the signal filter 21; a vibration signal comparator 26 electrically connected to the vibration signal calculator 25; the vibration signal comparator 26 is electrically connected to the relay 3.
Because the vibration signal sensor 1 can collect a plurality of vibration signals, the vibration signal transmitted by the vibration signal sensor 1 is filtered by the signal filter 21, clutter in the vibration signal can be filtered, accurate vibration data of a certain specific wave band can be obtained, meanwhile, the vibration signal calculator 25 is arranged, the filtered vibration data can be calculated according to configuration parameters (such as filter type, filter cut-off frequency, measuring range, frequency band and the like), accurate processing of the vibration data is further realized, the vibration signal comparator 26 is electrically connected with the vibration signal calculator 25, so that the accurate vibration signal calculated by the vibration signal calculator 25 can be compared with a preset vibration signal, a control instruction is output to the relay 3, and the relay 3 controls the alarm 4 to give an alarm.
Simultaneously, in order to in time report to the police to monitored equipment, make things convenient for operating personnel in time to know the trouble and go out the department, alarm 4 includes signal indicator, and according to the alarming function of difference, signal indicator divide into system alarm indicator, danger alarm indicator, communication pilot lamp, power indicator. Wherein, the alarm indicator light can be a signal flashing indicator light.
As a preferred embodiment, when the vibration monitor is in a normal communication state, the system alarm indicator lamp is not on, and the danger alarm indicator lamp and the power indicator lamp respectively send out yellow and green signals;
when the vibration monitor is in a communication disconnection state, the danger alarm indicating lamp sends out a yellow signal, the communication indicating lamp sends out a red signal and the power supply indicating lamp sends out a green signal;
when the vibration monitor detects that the vibration signal exceeds the limit, the danger alarm indicating lamp sends a red flashing signal;
when the vibration monitor detects that the impact signal exceeds the limit, the danger alarm indicator lamp sends a red normally-on signal;
when the vibration monitor has a system error, the system alarm indicator lamp sends a red signal, the danger alarm indicator lamp sends a yellow signal, and the power indicator lamp sends a green signal.
Referring to fig. 6, fig. 6 is a flow chart illustrating an operation method of a vibration monitor according to an exemplary embodiment of the present invention, in which a DSP1 (first digital signal processor) and a DSP2 (second digital signal processor) are respectively used to replace the first digital signal processor 23 and the second digital signal processor 24 mentioned in the above embodiments, and as shown in fig. 6, the operation method of the vibration monitor includes:
s601: the DSP1 initializes.
S602: the DSP2 initializes.
S603: the DSP1 reads the filter parameters of the DSP 2.
S604: the DSP2 writes the stored channel parameters to the DSP 1.
S605: and collecting vibration signals and impact signals of all channels.
S606: the DSP1 filters and calculates vibration data as well as shock data.
S607: the DSP2 reads the data of the DSP1 in a timing mode.
S608: the DSP2 judges whether to alarm or not according to the data of the DSP 1; if yes, go to step S609.
S609: the relay is actuated.
S610: the D/A signal converter performs DA conversion and analog output.
S611: the DSP2 judges whether to connect with the PC; if yes, go to step S612.
S612: the DSP2 interacts with the PC to configure parameters (alarm state, acceleration of each channel, range of each channel, alarm threshold value, filter type, filter cut-off frequency, etc.).
S613: the DSP2 judges whether the configuration parameters are changed; if yes, go to step S614.
S614: the configuration parameters are stored and then sent to the DSP 1.
S615: judging whether a PLC is connected or not; if yes, go to step S616 or step S617.
S616: and the vibration data and the running state (information such as alarm state, abnormity and the like) are sent to the PLC through a CAN communication bus or a Profibus communication bus.
S617: judging whether the PLC sends a switching value control signal or not; if yes, go to step S618.
S618: judging whether to perform self-checking according to the switching value control signal; if yes, go to S619, S623 or S627.
S619: the vibration monitor begins self-checking.
S620: the DSP2 judges whether the self-test passes; if yes, go to step S621; if not, go to step S622.
S621: and sending the self-checking result and the state of the vibration monitor to the PLC.
S622: and controlling an alarm to give an alarm.
S623: judging whether to detect the safety impact; if yes, go to step S624.
S624: the relay is actuated.
S625: judging whether the self-checking is finished or not; if yes, go to step S626.
S626: and resetting the relay.
S627: judging whether the vibration alarm is reset or not; if yes, go to step S628.
S628: and resetting the alarm relay.
To sum up, can obtain through above-mentioned working process, the utility model provides a vibration monitor through set up AD signal converter between vibration signal sensor and digital signal processor and set up the DA converter between digital signal processor and analog signal output interface, can improve digital signal processor to the handling capacity and the transmission capacity of information. Simultaneously, increase impact signal and detect the function, can judge whether monitored control equipment receives the impact to further reduce monitored control equipment and receive the damage that external force impact caused, improve monitored control equipment's life.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above-mentioned embodiments of the present invention do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A vibration monitor, comprising:
the device comprises a vibration signal sensor (1), a digital signal processor (2), a relay (3), an alarm (4), an A/D signal converter (5), a D/A signal converter (6) and an analog signal output interface (7); wherein,
the vibration signal sensor (1) is electrically connected with the digital signal processor (2);
the digital signal processor (2) is electrically connected with the relay (3);
the relay (3) is electrically connected with the alarm (4);
the A/D signal converter (5) is connected between the vibration signal sensor (1) and the digital signal processor (2);
the D/A signal converter (6) is electrically connected with the digital signal processor (2), and the D/A signal converter (6) is also electrically connected with the analog signal output interface (7).
2. Vibration monitor according to claim 1, wherein the vibration signal sensor (1) comprises:
a three-axis vibration sensor (101) disposed inside a housing of the vibration monitor; and
the external vibration monitoring channel (102) is arranged outside the shell of the vibration monitor and is connected with the digital signal processor (2); wherein the three-axis vibration sensor (101) comprises three acceleration sensors with acceleration measurement directions perpendicular to each other.
3. The vibration monitor of claim 1, further comprising:
a shutdown protection controller (9), the digital signal processor (2) comprising a signal filter (21) and a shock signal comparator (22); wherein,
the signal filter (21) is electrically connected with the vibration signal sensor (1), and the impact signal comparator (22) is electrically connected with the signal filter (21);
the impact signal comparator (22) is also electrically connected with the relay (3), and the relay (3) is electrically connected with the alarm (4);
the shock signal comparator (22) is further electrically connected with the shutdown protection controller (9), and the shutdown protection controller (9) is connected with monitored equipment outside the vibration monitor shell.
4. The vibration monitor of claim 3, further comprising:
the vibration pulse self-checking interface (10) is electrically connected with the digital signal processor (2) and is used for receiving a vibration pulse self-checking signal sent by external processing equipment (13); the vibration pulse self-checking signal is used for controlling the digital signal processor (2) to detect the digital signal processor (2), the relay (3), the alarm (4) and the vibration signal sensor (1);
The shock pulse self-checking interface (11) is electrically connected with the digital signal processor (2) and is used for receiving a shock pulse self-checking signal sent by the external processing equipment (13), and the shock pulse self-checking signal is used for controlling the digital signal processor (2) to detect the vibration signal sensor (1), the shutdown protection controller (9), the signal filter (21) and the shock signal comparator (22);
a self-checking reset device (12) electrically connected with the relay (3); the self-checking resetter (12) is used for sending a reset pulse to the relay (3).
5. The vibration monitor according to claim 1, wherein the digital signal processor (2) comprises a first digital signal processor (23) and a second digital signal processor (24); wherein,
the first digital signal processor (23) is connected between the vibration signal sensor (1) and the second digital signal processor (24);
the second digital signal processor (24) is electrically connected with the relay (3).
6. The vibration monitor according to claim 5, wherein the second digital signal processor (24) further comprises: a configuration parameter receiver (241), a configuration parameter transmitter (242) and a configuration parameter memory (243);
The configuration parameter receiver (241) is electrically connected with the external processing device (13) and is also electrically connected with the configuration parameter transmitter (242) and the configuration parameter memory (243), respectively;
the configuration parameter transmitter (242) is electrically connected to the first digital signal processor (23).
7. The vibration monitor of claim 1, further comprising:
the digital signal processor (2) is also electrically connected to the external processing device (13) via a communication bus (14), the communication bus (14) comprising a CAN communication bus and/or a Profibus communication bus.
8. The vibration monitor according to claim 1, wherein the alarm (4) comprises a signal indicator light, the signal indicator light comprising:
system alarm indicator lamp, danger alarm indicator lamp, communication indicator lamp, power indicator lamp.
9. The vibration monitor according to claim 3, wherein the digital signal processor (2) comprises:
a vibration signal calculator (25) electrically connected to the signal filter (21);
a vibration signal comparator (26) electrically connected to the vibration signal calculator (25);
the vibration signal comparator (26) is electrically connected with the relay (3).
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| CN112798099A (en) * | 2020-12-30 | 2021-05-14 | 江阴众和电力仪表有限公司 | Digital display type four-channel vibrating instrument |
| CN113156341A (en) * | 2021-03-11 | 2021-07-23 | 南京高速齿轮制造有限公司 | Detection circuit and device for vibration sensor of gear box |
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| CN106969828A (en) * | 2017-04-18 | 2017-07-21 | 中广核工程有限公司 | A kind of steam turbine watt vibration sensor fault diagnosis and passage check system and method |
| CN112631355A (en) * | 2020-12-01 | 2021-04-09 | 上海华超电器科技有限公司 | Real-time electrical performance monitoring device |
| CN112798099A (en) * | 2020-12-30 | 2021-05-14 | 江阴众和电力仪表有限公司 | Digital display type four-channel vibrating instrument |
| CN113156341A (en) * | 2021-03-11 | 2021-07-23 | 南京高速齿轮制造有限公司 | Detection circuit and device for vibration sensor of gear box |
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