阅读说明：本技术 一种多路同步测量旋转机械设备转速及振幅的便携式测试仪 (A kind of Multi-path synchronous measures the portable tester of rotating machinery revolving speed and amplitude ) 是由 兰鹏 王麟 马常松 李蕃 孙睿 李志东 于 2019-09-12 设计创作，主要内容包括：本发明公开了一种多路同步测量旋转机械设备转速及振幅的便携式测试仪,包括：信号切换单元,负责在主控单元的控制下完成N路被测信号选通其中M路信号的切换工作；方波变换单元,负责将信号切换单元切换后的M路输出信号从正弦波到同频率方波的转换,以满足主控单元对脉冲信号的读取要求；模数转换单元,负责将将信号切换单元切换后的M路输出信号进行模数转换；主控单元,负责接收方波变换单元的信号计算得出转速数据,以及接收模数转换单元的数据计算得出振幅数据。该测试仪测量精度较高,可实现对20台旋转机械设备转速和振幅精准测量。(The invention discloses a kind of Multi-path synchronous measurement rotating machinery revolving speed and the portable testers of amplitude, comprising: signal switch unit is responsible for completing the switch operating that the measured signal of the road N gates the wherein road M signal under the control of main control unit；Square wave converter unit is responsible for the road the M output signal after switching signal switch unit from sine wave to the conversion of same frequency square wave, to meet main control unit to the reading requirement of pulse signal；AD conversion unit is responsible for the road the M output signal after switching signal switch unit and carries out analog-to-digital conversion；Main control unit, rotary speed data is calculated in the signal for being responsible for recipient's wave conversion unit, and amplitude data is calculated in the data of reception AD conversion unit.The tester measurement accuracy is higher, it can be achieved that accurately measuring to 20 rotating machinery revolving speeds and amplitude.)

1. the portable tester of a kind of Multi-path synchronous measurement rotating machinery revolving speed and amplitude characterized by comprising

Signal switch unit is responsible for completing the switching work that the measured signal of the road N gates the wherein road M signal under the control of main control unit Make, N is the integral multiple of M；

Square wave converter unit is responsible for the road the M output signal after switching signal switch unit from sine wave to same frequency square wave Conversion, to meet main control unit to the reading requirement of pulse signal；

AD conversion unit is responsible for the road the M output signal after switching signal switch unit and carries out analog-to-digital conversion；

Main control unit, rotary speed data is calculated in the signal for being responsible for recipient's wave conversion unit, and receives AD conversion unit Data amplitude data is calculated.

2. the portable tester of Multi-path synchronous measurement rotating machinery revolving speed according to claim 1 and amplitude, Be characterized in that: main control unit also passes through communication unit and connect with host computer, and main control unit is by the rotary speed data being calculated and vibration Width data are sent to host computer by communication unit, are shown by host computer.

3. the portable tester of Multi-path synchronous measurement rotating machinery revolving speed according to claim 2 and amplitude, Be characterized in that: communication unit includes ethernet PHY chip and RJ45 interface.

4. the portable tester of Multi-path synchronous measurement rotating machinery revolving speed according to claim 1 and amplitude, Be characterized in that: signal switch unit includes M piece channel switching chip and signal input port, and M piece channel switches chip and uses phase Same address wire is connect with main control unit, selects the road M therein to carry out gating processing every time from the signal of the road N, after being disposed Main control unit changes the signal of address wire, switches to next batch M paths.

5. the portable tester of Multi-path synchronous measurement rotating machinery revolving speed according to claim 4 and amplitude, Be characterized in that: channel switches chip using ADG408.

6. the portable tester of Multi-path synchronous measurement rotating machinery revolving speed according to claim 1 and amplitude, Be characterized in that: square wave converter unit includes the identical square wave translation circuit in the road M, respectively corresponds the road M of processing signal switch unit Output signal.

7. the portable tester of Multi-path synchronous measurement rotating machinery revolving speed according to claim 1 and amplitude, Be characterized in that: AD conversion unit includes the identical analog to digital conversion circuit in the road M, respectively corresponds the road M of processing signal switch unit Output signal.

8. the portable tester of Multi-path synchronous measurement rotating machinery revolving speed according to claim 1 and amplitude, Be characterized in that: the portable tester of the Multi-path synchronous measurement rotating machinery revolving speed and amplitude includes portable sandwich type element, Include upper layer and lower layer in shell, separated upper and lower level using partition, lower layer's installation wiring board and battery, upper layer are installed on partition The switch of control circuit board, tablet computer, monitoring cell electricity quantity table, signal input port, battery charging hole；Measured signal is logical It crosses signal input port to enter in wiring board, the RJ45 interface in wiring board passes through cable and the network interface phase in tablet computer Even, for ordering and the communication of data；Battery has two-way route, and route is powered logical by switch control line plate all the way Disconnected, another way route is electricity input, is connected with battery charging hole；Voltameter passes through conductor in parallel at battery both ends, for showing Show battery capacity.

9. the portable tester of Multi-path synchronous measurement rotating machinery revolving speed according to claim 1 and amplitude, Be characterized in that: main control unit uses dsp chip.

10. the portable tester of Multi-path synchronous measurement rotating machinery revolving speed according to claim 9 and amplitude, It is characterized in that: main control unit model SH7216.

11. the portable tester of Multi-path synchronous measurement rotating machinery revolving speed according to claim 7 and amplitude, Be characterized in that: analog to digital conversion circuit includes difference chip AD8131, analog-digital chip AD7767 and resistance R11, R12, is connected Connect relationship are as follows: resistance R12 is connected with 8 pins of AD8131, and 1 pin of AD8131 is grounded by R11,3,6 pins of AD8131 + 5V, -5V are met respectively, and 4,5 pins of AD8131 are connected with 4,5 pins of AD7767 respectively, 6,11,15,16 pins of AD7767 Ground connection, 8,9 pins meet 3.3V, and 1 pin meets 2.5V, and 2 pins meet 4V, and 7,12,13,14 pins are respectively with main control unit SH7216's 172,77,162,165 are connected.

12. the portable tester of Multi-path synchronous measurement rotating machinery revolving speed according to claim 1 and amplitude, Be characterized in that: the digital signal after AD conversion unit conversion is transmitted to the specified of main control unit with SPI serial communication mode and posts Storage etc. is to be calculated.

13. the portable tester of Multi-path synchronous measurement rotating machinery revolving speed according to claim 1 and amplitude, It is characterized in that: N 20, M 4.

Technical field

The invention belongs to detection device technology fields, and in particular to a kind of Multi-path synchronous measurement rotating machinery revolving speed and The portable tester of amplitude.

Background technique

It is domestic to be directed to rotating machinery revolving speed and amplitude measuring apparatus at present, it has the disadvantage that:

1. being single channel monitoring by the device majority of measurement core of DSP, measurement data is locally displayed by liquid crystal display, is measured Data can not store.

2. being Multi-channel monitoring by the device minority of measurement core of DSP, but its supply lines and connection need to apply in advance And if the data needs monitored are shown in Central Control Room, can not be shown, be inquired in measure field, storing parameter, portable feature It is unobvious.

Using LabView as the multichannel amplitude measuring apparatus of framework, since capture card is expensive and required facility is larger, one As do not have the function of portable type measuring, be not able to satisfy operation in-site measurement requirement, while by capture card signal sampling channel Several limitations is generally mostly 4 tunnels, 8 road parallel measurements, is unable to satisfy the live 20 road synchro measure requirements of operation.

Summary of the invention

It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of Multi-path synchronous measurement rotating machineries to turn The portable tester of speed and amplitude.20 rotating machinery revolving speeds and amplitude can be measured simultaneously, can be by showing equipment sheet Ground shows measurement data, can also measure data store query, have the function of the measurement dress of many advantages, such as portable type measuring It sets.

The present invention is achieved by the following technical solutions:

A kind of Multi-path synchronous measures the portable tester of rotating machinery revolving speed and amplitude, comprising:

Signal switch unit, is responsible for completing measured signal gating in the road N under the control of main control unit that wherein the road M signal is cut It changes jobs；N is the integral multiple of M；

Square wave converter unit is responsible for the road the M output signal after switching signal switch unit from sine wave to same frequency side The conversion of wave, to meet main control unit to the reading requirement of pulse signal；

AD conversion unit is responsible for the road the M output signal after switching signal switch unit and carries out analog-to-digital conversion；

Main control unit, rotary speed data is calculated in the signal for being responsible for recipient's wave conversion unit, and receives analog-to-digital conversion Amplitude data is calculated in the data of unit.

In the above-mentioned technical solutions, main control unit also passes through communication unit and connect with host computer, and main control unit will calculate To rotary speed data and amplitude data host computer is sent to by communication unit, shown by host computer.

In the above-mentioned technical solutions, communication unit includes ethernet PHY chip and RJ45 interface.

In the above-mentioned technical solutions, signal switch unit includes M piece channel switching chip and signal input port, and M piece is logical Road switching chip is connect using identical address wire with main control unit, and the road M therein is selected to be gated every time from the signal of the road N Processing, main control unit changes the signal of address wire after being disposed, and switches to next batch M paths.

In the above-mentioned technical solutions, switching chip in channel uses ADG408.

In the above-mentioned technical solutions, square wave converter unit includes the identical square wave translation circuit in the road M, respectively corresponds processing letter The road the M output signal of number switch unit.

In the above-mentioned technical solutions, AD conversion unit includes the identical analog to digital conversion circuit in the road M, respectively corresponds processing letter The road the M output signal of number switch unit.

In the above-mentioned technical solutions, the portable tester of the Multi-path synchronous measurement rotating machinery revolving speed and amplitude Including portable sandwich type element, including upper layer and lower layer in shell, separated upper and lower level using partition, wiring board and battery are installed by lower layer, Upper layer is installed by switch, tablet computer, monitoring cell electricity quantity table, the signal input port, battery of control circuit board on partition Charging hole；Measured signal is entered in wiring board by signal input port, and the RJ45 interface in wiring board passes through cable and plate Network interface in computer is connected, for ordering and the communication of data；Battery has two-way route, and route passes through switch control all the way The on-off of wiring board power supply, another way route are electricity input, are connected with battery charging hole；Voltameter is by conductor in parallel in electricity Pond both ends, for showing battery capacity.

In the above-mentioned technical solutions, main control unit uses dsp chip.

In the above-mentioned technical solutions, main control unit model SH7216.

In the above-mentioned technical solutions, analog to digital conversion circuit include difference chip AD8131, analog-digital chip AD7767 and Resistance R11, R12, connection relationship are as follows: resistance R12 is connected with 8 pins of AD8131, and 1 pin of AD8131 is grounded by R11, 3,6 pins of AD8131 meet+5V, -5V respectively, and 4,5 pins of AD8131 are connected with 4,5 pins of AD7767 respectively, AD7767 6,11,15,16 pins ground connection, 8,9 pins meet 3.3V, and 1 pin meets 2.5V, and 2 pins meet 4V, 7,12,13,14 pins respectively and 172,77,162, the 165 of main control unit SH7216 are connected.

In the above-mentioned technical solutions, the digital signal after AD conversion unit conversion, is transmitted to SPI serial communication mode The specified register of main control unit etc. is to be calculated.

The advantages and benefits of the present invention are:

1, the tester measurement accuracy is higher, it can be achieved that accurately measuring to 20 rotating machinery revolving speeds and amplitude；

2, the tester is multiple functional, function cover parameter show, data storage with inquiry, bound setting, tendency chart Display, max min average value real-time statistics such as show at the functions；

3, the tester is small in size, only a suitcase size, and for portability using convenient, the portable tester can be to appointing The slewing of meaning position measures, in the complex industrial environment of especially suitable factory.

Detailed description of the invention

Fig. 1 .1-1.3 is tester overall structure figure；

Fig. 2 is tester device schematic diagram in succession；

Fig. 3 is the wiring board circuit diagram of tester；

Fig. 4 is signal switch unit circuit diagram；

Fig. 5 is square wave converter unit circuit diagram；

Fig. 6 is AD conversion unit circuit diagram；

Fig. 7 is modulus conversion chip daisy chain structure circuit diagram；

Fig. 8 is communication unit circuit diagram；

Fig. 9 is power supply unit circuit diagram.

It for those of ordinary skill in the art, without creative efforts, can be according to above attached Figure obtains other relevant drawings.

Specific embodiment

In order to enable those skilled in the art to better understand the solution of the present invention, combined with specific embodiments below furtherly Bright technical solution of the present invention.

A kind of portable tester of Multi-path synchronous measurement rotating machinery revolving speed and amplitude, referring to attached drawing 1.1-1.3, Including portable hand held shell 1, includes upper layer and lower layer in shell 1, separated upper and lower level using partition 4, wiring board 2 is installed by lower layer With battery 3, switch 5, tablet computer 6, monitoring cell electricity quantity table 7, the signal that control circuit board is installed on upper layer on partition 4 are defeated Inbound port 8, battery charging hole 9.

As shown in Fig. 2, external signal is entered in wiring board 2 by signal input port 8, the RJ45 interface in wiring board 2 It is connected by cable with the network interface in tablet computer 6, for ordering and the communication of data；Battery 3 has two-way route, all the way Route passes through the on-off that 5 control circuit board of switch is powered, and another way route is electricity input, is connected with battery charging hole 9；Electricity Table 7 passes through conductor in parallel at 3 both ends of battery, for showing 3 electricity of battery.

As shown in figure 3, wiring board 2 includes six units: signal switch unit 10, square wave converter unit 11 (share identical Four tunnels), AD conversion unit 12 (sharing identical four tunnel), main control unit 13, communication unit 14, power supply unit 15.20 tunnels After measured signal enters wiring board, branch, switching are carried out by signal switch unit 10 first under the control of main control unit 13 Tetra- road signal of Hou respectively enters square wave converter unit 11 and AD conversion unit 12,13 recipient's wave conversion unit of main control unit Rotary speed data is calculated in 11 signal, and main control unit 13 receives 12 data of AD conversion unit and amplitude data is calculated, obtains Data out are sent to tablet computer 6 communication unit 14 again in the form of udp protocol, and tablet computer 6 is able to carry out The functions such as tendency chart is shown, max min average value real-time statistics are shown；Said supply unit 15 is responsible for entire wiring board 2 Power supply.

As shown in figure 4, the signal switch unit 10 is responsible for completing 20 tunnel measured signals under the control of main control unit 13 Gate the switch operating of wherein four road signals.Signal switch unit 10 include four channels switching chip 16 (model ADG408) and Signal input port 8, four channel switching chips use identical address wire, select 4 tunnel therein every time from 20 road signals Gating processing is carried out, main control unit 13 changes the signal of address wire after being disposed, and switches to 4 channels of next batch.Signal The circuit connecting relation of switch unit are as follows: 1,2,3 pins of main control unit 13 (model dsp chip SH7216) respectively with four 1,16,15 pins that channel switches chip are connected, and 1~20 pin of signal input port 8 and four channels switch chip 16 4,5,6,7,17 pins are successively respectively connected with, after the completion of 8 pins of four channel switching chips 16 are respectively as the switching of four tunnels Output signal AOUT.It is as shown in table 1 that channel switches the corresponding signal path of chip ADG408 chip.

1 channel of table switches chip table corresponding with signal path

The square wave converter unit 11, which is mainly responsible for, completes channel switching tetra- road AOUT signal of Hou from sine wave to same frequency The conversion of rate square wave, to meet main control unit to the reading requirement of pulse signal.Square wave converter unit sets up four Lu Xiangtong altogether Square wave translation circuit, respectively correspond processing signal switch unit 10 four road AOUT signals.Referring to attached drawing 5, with wherein 1 tunnel side For wave conversion circuit, square wave translation circuit include amplifier chip 17 (model AD822), comparator chip 18 (model LM393), Resistance R1~R8, capacitor C1~C3, circuit connecting relation are as follows: AOUT signal (i.e. channel switching chip 16 8 pins) by by It is connect after the filter that R1 is formed with C1 with 5 pins of AD822, the 4 pins ground connection of AD822,6 pins of AD822 pass through resistance R2 ground connection, 8 pins of AD822 connect 3.3V voltage source, and capacitor C2 mono- terminates the voltage source, one end ground connection, 7 pins of AD822 and 3 Pin is connected directly, and 2 pins of AD822 are grounded by resistance R3, and 2 pins of AD822, which also pass through resistance R4 and connect the 1 of AD822, to be drawn Foot, 1 pin of AD822 pass through 3 pins of resistance R5 connection comparator chip LM393,3.3V and concatenated resistance R7, R8 phase Even, it and being connected to ground, forms electric resistance partial pressure, the other end of R8 is connected with 2 pins of LM393, the 4 pins ground connection of LM393, 8 pins of LM393 connect 3.3V voltage source, and capacitor C3 mono- terminates the voltage source, and one end is grounded, meanwhile, 8 pins of LM393 pass through R6 is connected with 1 pin of LM393, and 1 pin of LM393 exports same frequency square-wave signal SpeedOut, into main control unit 13 into The detection of row revolving speed.

The AD conversion unit 12, which is mainly responsible for, carries out analog-to-digital conversion, analog-to-digital conversion for switching tetra- road AOUT signal of Hou Unit 12 sets up the identical analog to digital conversion circuit in four tunnels altogether, respectively corresponds the four road AOUT letter of processing signal switch unit 10 Number.As shown in fig. 6, analog to digital conversion circuit includes 19 (model of difference chip by taking wherein 1 road analog to digital conversion circuit as an example AD8131), analog-digital chip 20 (model AD7767) and resistance R11, R12, connection relationship are as follows: AOUT signal (i.e. channel Switch 8 pins of chip 16) it is connected by resistance R12 with 8 pins of AD8131,1 pin of AD8131 is grounded by R11, 3,6 pins of AD8131 meet+5V, -5V respectively, and 4,5 pins of AD8131 are connected with 4,5 pins of AD7767 respectively, AD7767 6,11,15,16 pins ground connection, 8,9 pins meet 3.3V, and 1 pin meets 2.5V, and 2 pins meet 4V, 7,12,13,14 pins respectively and 172,77,162, the 165 of main control unit (model dsp chip SH7216) are connected.Further, as shown in fig. 7, analog-to-digital conversion Digital signal after the conversion of unit 12, specified register for being transmitted to main control unit with SPI serial communication mode etc. are to be calculated.Four A analog-digital chip AD7767, which joins end to end, constitutes daisy chain structure, carries out data transmission.Wherein, first AD7767 chip 15 pins of 20 (1) are grounded, and 10 pins of first AD7767 chip connect 15 pins of second AD7767 chip 20 (2), the 10 pins of two AD7767 chips 20 (2) connect 15 pins of third piece AD7767 chip 20 (3), third piece AD7767 chip 20 (3) 10 pins connect 15 pins of the 4th AD7767 chip 20 (4), and 10 pins of the 4th AD7767 chip 20 (4) meet master 160 pins of the dsp chip SH7216 of unit 13 are controlled, data transmission is completed.

The resulting revolving speed of main control unit operation and amplitude data are led to as shown in figure 8, the communication unit 14 is mainly responsible for It crosses Ethernet interface to transfer out, communications protocol is udp protocol.Communication unit includes 21 (model of ethernet PHY chip RTL8201) and RJ45 interface, connection relationship are as follows: the dsp chip SH7216 of main control unit 13 79,80,81,84,87,88, 89,90,91,92,93,94,97,98,99,100,101,102 pins respectively with the 26 of RTL8201,9,25,1,23,16,21, 20,19,18,24,22,7,2,6,5,4,3 pins are connected, and 8,32,28,37,38,39,40,41,42,43, the 44 of RTL8201 are drawn Foot ground connection, 30,31,33,34 pins of RTL8201 are connected with 4,3,2,1 pin of RJ45 interface.

It powers as shown in figure 9, said supply unit 15 is mainly responsible for for each unit of whole system, including ± 12V, ± 5V ,+5V, 4V, 3.3V, 2.5V, power supply unit 15 include power supply chip 22-28, and model is respectively as follows: power supply chip WRA2412YMD-3W, power supply chip WRA2405YMD-3W, power supply chip LM7805, power supply chip LM7905, power supply chip REF3140, power supply chip REG1117-2.5V, power supply chip REG1117-3.3V；Its connection relationship be WRA2412YMD-3W and 1,2 pins of WRA2405YMD-3W are grounded respectively and 24V external power supply, and 3 pins of WRA2412YMD-3W and the 1 of LM7805 are drawn Foot be connected, 3 pins are connected with 1 pin of LM7905,2 pins of 4 pins and LM7805,2 pins of LM7905, REF3140 2 Pin, 2 pins of REG1117-2.5V are connected.1 pin of 3 pins of LM7805 and REF3140, REG1117-2.5V 1 draw Foot is connected.3,5 pins of WRA2405YMD-3W are connected with 1,2 pins of REG1117-3.3V respectively.WRA2412YMD-3W's 3,5 pin offer ± 12V power supply, 3 pins of LM7805 and the 3 pin offer ± 5V power supplys of LM7905, the 3 of REG1117-2.5V Pin provides 2.5V power supply, the 3 pin offer+5V power supply of WRA2405YMD-3W, and 3 pins of REF3140 provide 4V power supply, 3 pins of REG1117-3.3V provide 3.3V power supply.

Illustrative description has been done to the present invention above, it should explanation, the case where not departing from core of the invention Under, any simple deformation, modification or other skilled in the art can not spend the equivalent replacement of creative work equal Fall into protection scope of the present invention.