CN210038499U - Universal sensor data acquisition device - Google Patents
Universal sensor data acquisition device Download PDFInfo
- Publication number
- CN210038499U CN210038499U CN201921136293.0U CN201921136293U CN210038499U CN 210038499 U CN210038499 U CN 210038499U CN 201921136293 U CN201921136293 U CN 201921136293U CN 210038499 U CN210038499 U CN 210038499U
- Authority
- CN
- China
- Prior art keywords
- circuit
- control unit
- sensor
- output
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model belongs to the technical field of circuit design, a general formula sensor data acquisition device is proposed, including main control unit and encoder circuit, encoder circuit's input and main control unit are connected, still include relay group one, relay group one includes the parallelly connected relay of a plurality of one, every relay all includes input one and output one, output one is used for connecting various sensors, still include data interface one, a plurality of output one all is connected with data interface one, still include relay group two, relay group two includes the parallelly connected relay of a plurality of two, every relay two all includes input two and output two, input two is connected with encoder circuit's output, output two and data interface one, encoder circuit's output is all connected. Through the technical scheme, the problems that the MCU board for collecting the sensor in the prior art is single in function and poor in universality are solved.
Description
Technical Field
The utility model belongs to the technical field of circuit design, a general formula sensor data acquisition device is related to.
Background
After the reservoir is built, the working states of a dam, a bedrock, a dam abutment, a bank slope and an underground building are greatly influenced due to the change of water level foundation conditions. Especially, after the dam stores water, hydraulic load is generated on the dam, so that dam safety monitoring is an important safety guarantee for safe water storage and operation of the dam.
The current common safety monitoring method is to install a sensor at an observation point, then collect sensor data by a corresponding MCU board, and process, store and display the sensor data. Because the sensors used on site are various, vibrating wire, differential resistance and displacement sensors are usually arranged at one observation point or a plurality of adjacent observation points, the data acquisition of the sensors of three different types cannot be completed by using a traditional single-purpose MCU board, only a plurality of sensors can be used, and the waste of hardware resources and the increase of cost are caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a, the poor problem of sensor acquisition MCU board function singleness, commonality among the prior art has been solved.
The technical scheme of the utility model is realized like this: comprises that
The measurement management circuit comprises a main control unit, an encoder circuit and a measurement circuit, wherein the input end of the encoder circuit is connected with the main control unit,
the first relay group comprises a plurality of first relays connected in parallel, each first relay comprises a first input end and a first output end, the first output end is used for connecting various sensors,
a first data interface, a plurality of first output ends are connected with the first data interface,
and the second relay group comprises a plurality of second relays connected in parallel, each second relay group comprises a second input end and a second output end, the second input end is connected with the output end of the encoder circuit, and the second output end is connected with the first data interface and the measuring circuit.
And the input end of the bus transceiver is connected with the main control unit, and the output end of the bus transceiver is connected with the second input end and the encoder circuit.
Further, still include the detection channel, the detection channel includes relay unit three, data interface two and switch tube circuit, relay unit three includes input three and output three, input three is passed through the switch tube circuit with the main control unit is connected, output three with data interface two is connected, data interface two still with output two is connected.
Further, the measuring circuit comprises a vibrating wire sensor measuring circuit, the vibrating wire sensor measuring circuit comprises a first control unit connected with the main control unit, and further comprises a frequency measuring circuit and a temperature measuring circuit which are both connected with the first control unit,
the frequency measuring circuit comprises an excitation circuit, an amplifying circuit and a phase-locked loop circuit, wherein the input end of the excitation circuit is connected with the first control unit, the output end of the excitation circuit is connected with the second input end, the input end of the amplifying circuit is connected with the output end of the excitation circuit, the output end of the amplifying circuit is connected with the first control unit through the phase-locked loop circuit,
the temperature measuring circuit comprises a synchronous voltage/frequency converter and a level conversion circuit which are sequentially connected, wherein the input end of the synchronous voltage/frequency converter is connected with the second input end, and the level conversion circuit is connected with the first control unit.
Further, the measuring circuit still includes differential resistance sensor measuring circuit, differential resistance sensor measuring circuit is including analog switch circuit, AD sampling circuit one and the control unit two that connect gradually, analog switch circuit's input with input two is connected, control unit two with the main control unit is connected.
Further, the measuring circuit further comprises a displacement sensor measuring circuit, the displacement sensor measuring circuit comprises a sensor interface circuit, an AD sampling circuit II and a control unit III which are sequentially connected, the sensor interface circuit is connected with the input end II, and the control unit III is connected with the main control unit.
Furthermore, the remote control device also comprises a remote control receiving circuit connected with the main control unit.
And the system further comprises a CAN communication circuit and an Ethernet communication circuit which are connected with the main control unit.
Further, the first control unit comprises a first RS232 communication circuit, the second control unit comprises a second RS232 communication circuit, the third control unit comprises a third RS232 communication circuit, and the first RS232 communication circuit, the second RS232 communication circuit and the third RS232 communication circuit are all connected with the main control unit.
The utility model discloses a theory of operation and beneficial effect do:
1. the utility model discloses when using, insert the relay that corresponds in the relay group respectively with multiple sensor one, the main control unit passes through input one, makes the sensor data access output end one of gating in advance, and output one inserts data interface one, and simultaneously, the main control unit passes through input two, makes data interface one be connected with output two to finally insert measuring circuit through output two, carry out the calculation of sensor data by measuring circuit. The encoder is arranged to encode multiple signals, the master control unit performs time-sharing gating on multiple sensors, and workers can select different sensors and measure corresponding sensor data according to needs, so that the trouble of replacing the sensors on site is avoided.
The utility model discloses main control unit passes through the encoder circuit in with, realizes the switching control to relay unit one and relay unit two, and then has realized the data acquisition of multiple sensor, and the commonality is strong, not only is favorable to simplifying the field operation, is favorable to practicing thrift hardware resources, reduce cost moreover.
2. In the utility model, the main control unit is connected with the second input end and the main control unit is connected with the encoder through the bus transceiver, thereby realizing signal isolation and avoiding interference signals of the first relay group and the second relay group from entering the measurement management circuit and influencing the work of the measurement management circuit; meanwhile, the bus transceiver can enhance the driving capability of the measurement management circuit and meet the driving requirements of the encoder and the input end II.
3. The utility model discloses normal during operation, the sensor signal is inserted by relay group one and is measured management circuit, when breaking down, can insert the test channel with the sensor alone and detect, because of the input of relay group one loops through encoder, bus transceiver and main control unit and is connected, the input three-way switch tube circuit of relay group three is connected with the main control unit, input one and input three are connected with the main control unit through different passageway respectively, like this, the position of the troubleshooting fault point of being convenient for.
4. The utility model discloses well relay group two can divide into three groups, is sensor access control circuit one, sensor access control circuit two and sensor access control circuit three respectively, and when sensor access control circuit one switched on, the string sensor measuring circuit that shakes was sent into to the data of string sensor that shakes, carries out the collection of string sensor data that shakes. The vibrating wire sensor measuring circuit comprises a frequency measuring circuit and a temperature measuring circuit, wherein the working principle of the frequency measuring circuit is as follows: the first control unit outputs a square wave signal and outputs the square wave signal to a frequency signal terminal of the vibrating wire sensor through the exciting circuit, the vibrating wire sensor feeds a frequency signal back to the output end of the exciting circuit, the amplifying circuit amplifies the signal at the output end of the exciting circuit and then sends the amplified signal to the phase-locked loop circuit for frequency detection, and the frequency detection result is transmitted to the first control unit for frequency calculation; the working principle of temperature measurement is as follows: pressure signals TEMP _ A and TEMP _ B output by the vibrating wire sensor are converted into frequency signals through a synchronous voltage/frequency converter, then converted into level signals which can be identified by a control unit I through a level conversion circuit, and sent to the control unit I for temperature calculation.
5. The utility model discloses when well sensor access control circuit two switched on, the difference hinders the data of sensor and sends into difference and hinders sensor measurement circuit, carries out the collection that the difference hinders sensor data. The analog switch circuit sends data of different terminals of the differential resistance sensor into the AD sampling circuit I in a time-sharing mode, mutual influence among the different terminals is avoided, and the AD sampling circuit II adopts a differential mode for sampling, so that the sampling precision is improved.
6. The utility model discloses when well sensor access control circuit three switched on, displacement sensor measuring circuit was sent into to displacement sensor's data, carries out the collection of displacement sensor data. The sensor interface circuit is used for converting an input signal of the displacement sensor into a differential signal, then sending the differential signal into the AD sampling circuit II for differential sampling, and finally sending the differential signal into the control unit III for calculation.
7. The utility model discloses well staff can send the sensor signal that needs the strobe for the main control unit through the remote controller, and the main control unit sends control signal to input one, input two and input three respectively, and the switching on and turn-off of control relay group one, relay group two and relay group three realize corresponding sensor signal's access.
8. The utility model discloses well control unit one, control unit two and control unit three all are connected with the main control unit, will shake string sensor data, difference resistance sensor data and displacement sensor data transmission and give the main control unit, and the main control unit CAN be through CAN communication circuit or ethernet communication circuit with various sensor data issue the PC, is convenient for monitor and the analysis various sensor data.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic circuit block diagram of the present invention;
FIG. 2 is a schematic diagram of a measurement management circuit according to the present invention;
FIG. 3 is a schematic diagram of a second circuit of the relay set of the present invention;
FIG. 4 is a schematic diagram of a circuit of a relay set according to the present invention;
FIG. 5 is a schematic diagram of a measuring circuit of the middle vibrating wire sensor of the present invention;
FIG. 6 is a schematic diagram of a measuring circuit of the medium differential resistance sensor of the present invention;
fig. 7 is a schematic diagram of a measuring circuit of the middle displacement sensor of the present invention;
FIG. 8 is a schematic diagram of a detection channel circuit in the present invention;
fig. 9 is a schematic diagram of a CAN communication and ethernet communication circuit according to the present invention;
in the figure: 1-a measurement management circuit, 101-a main control unit, 102-an encoder circuit, 103-a bus transceiver, 104-a measurement circuit, 2-a relay group I, 21-a relay I, 211-an input end I, 212-an output end I, 3-a data interface I, 4-a relay group II, 41-a relay group II, 411-an input end II, 412-an output end II, 5-a displacement sensor measurement circuit, 51-a sensor interface circuit, 52-an AD sampling circuit II, 53-a control unit III, 531-an RS232 communication circuit III, 7-a detection channel, 71-a relay group III, 711-an input end III, 712-an output end III, 72-a data interface II, 73-a switching tube circuit and 8-a vibrating wire sensor measurement circuit, 81-frequency measuring circuit, 811-excitation circuit, 812-amplifying circuit, 813-phase-locked loop circuit, 82-temperature measuring circuit, 821-synchronous voltage/frequency converter, 822-level converting circuit, 83-control unit I, 831-RS232 communication circuit I, 9-differential resistance sensor measuring circuit, 91-analog switch circuit, 92-AD sampling circuit I, 93-control unit II, 931-RS232 communication circuit II, 12-remote control receiving circuit, 13-CAN communication circuit and 14-Ethernet communication circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-9, comprises
The measurement management circuit 1 comprises a main control unit 101, an encoder circuit 102 and a measurement circuit 104, wherein the input end of the encoder circuit 102 is connected with the main control unit 101,
the relay group I2 comprises a plurality of relays I21 connected in parallel, each relay I21 comprises an input end I211 and an output end I212, the output ends I212 are used for connecting various sensors,
a first data interface 3, a plurality of first output ends 212 are all connected with the first data interface 3,
the second relay group 4 comprises a plurality of second relays 41 connected in parallel, each second relay 41 comprises a second input end 411 and a second output end 412, the second input end 411 is connected with the output end of the encoder circuit 102, and the second output end 412 is connected with the first data interface 3 and the measuring circuit 104.
The utility model discloses when using, insert relay 21 that corresponds in the relay group 2 respectively with multiple sensor, main control unit 101 passes through input 211, makes the sensor data access output 212 of gating in advance, and output 212 inserts data interface 3, and simultaneously, main control unit 101 passes through input two 411, makes data interface 3 be connected with output two 412 to finally insert measuring circuit 104 through output two 412, carry out the calculation of sensor data by measuring circuit 104. The encoder is arranged to encode multiple signals, the main control unit 101 performs time-sharing gating on multiple sensors, and workers can select different sensors and measure corresponding sensor data according to needs, so that the trouble of replacing the sensors on site is avoided.
The utility model discloses with well main control unit 101 through encoder circuit 102, realize the switching control to relay group 2 and relay group two 4, and then realized the data acquisition of multiple sensor, the commonality is strong, not only is favorable to simplifying field operation, is favorable to saving hardware resources, reduce cost moreover.
Further, the intelligent control system further comprises a bus transceiver 103, wherein an input end of the bus transceiver 103 is connected with the main control unit 101, and an output end of the bus transceiver 103 is connected with the second input end 411 and the encoder circuit 102.
In the utility model, the main control unit 101 is connected with the second input end 411, the main control unit 101 is connected with the encoder through the bus transceiver 103, signal isolation is realized, and interference signals of the first relay group 2 and the second relay group 4 are prevented from entering the measurement management circuit 1 to influence the work of the measurement management circuit 1; meanwhile, the bus transceiver 103 can enhance the driving capability of the measurement management circuit 1, and meet the driving requirement of the encoder and the input end two 411.
Further, the detection device further comprises a detection channel 7, wherein the detection channel 7 comprises a relay group III 71, a data interface II 72 and a switching tube circuit 73, the relay group III 71 comprises an input end III 711 and an output end III 712, the input end III 711 is connected with the main control unit 101 through the switching tube circuit 73, the output end III 712 is connected with the data interface II 72, and the data interface II 72 is further connected with the output end II 412.
The utility model discloses normal during operation, the sensor signal is inserted by relay group 2 and is measured management circuit 1, when breaking down, can insert the sensor alone and detect the passageway 7, input 211 because of relay group 2 loops through the encoder, bus transceiver 103 is connected with main control unit 101, three 711 of input of relay group three 71 pass through switch tube circuit 73 and are connected with main control unit 101, input 211 and three 711 of input are connected with main control unit 101 through different passageways respectively, and like this, be convenient for investigate the position of fault point.
Furthermore, the measuring circuit 104 further comprises a vibrating wire sensor measuring circuit 8, the vibrating wire sensor measuring circuit 8 comprises a first control unit 83 connected with the main control unit 101, a frequency measuring circuit 81 and a temperature measuring circuit 82 which are both connected with the first control unit 83,
the frequency measurement circuit 81 comprises an excitation circuit 811, an amplification circuit 812 and a phase-locked loop circuit 813, wherein the input end of the excitation circuit 811 is connected with the first control unit 83, the output end of the excitation circuit 811 is connected with the second input end 411, the input end of the amplification circuit 812 is connected with the output end of the excitation circuit 811, the output end of the amplification circuit 812 is connected with the first control unit 83 through the phase-locked loop circuit 813,
the temperature measuring circuit 82 includes a synchronous voltage/frequency converter 821 and a level converting circuit 822 connected in sequence, wherein an input end of the synchronous voltage/frequency converter 821 is connected to the second input end 411, and the level converting circuit 822 is connected to the first control unit 83.
The utility model discloses well relay group two 4 can be divided into three groups, is sensor access control circuit one, sensor access control circuit two and sensor access control circuit three respectively, and when sensor access control circuit switched on, the string sensor measuring circuit 8 that shakes was sent into to the data of string sensor that shakes, carries out the collection of string sensor data that shakes. The vibrating wire sensor measuring circuit 8 comprises a frequency measuring circuit 81 and a temperature measuring circuit 82, wherein the frequency measuring circuit 81 works according to the following principle: the first control unit 83 outputs a square wave signal and outputs the square wave signal to a frequency signal terminal of the vibrating wire sensor through the exciting circuit 811, the vibrating wire sensor feeds a frequency signal back to the output end of the exciting circuit 811, the amplifying circuit 812 amplifies the signal at the output end of the exciting circuit 811 and then sends the amplified signal to the phase-locked loop circuit 813 for frequency detection, and the frequency detection result is transmitted to the first control unit 83 for frequency calculation; the working principle of temperature measurement is as follows: the pressure signals TEMP _ a and TEMP _ B output by the vibrating wire sensor are converted into frequency signals by the synchronous voltage/frequency converter 821, then converted into level signals which can be identified by the first control unit 83 by the level conversion circuit 822, and sent to the first control unit 83 for temperature calculation.
Further, the measurement circuit 104 further includes a differential resistance sensor measurement circuit 9, the differential resistance sensor measurement circuit 9 includes an analog switch circuit 91, an AD sampling circuit one 92 and a control unit two 93 which are connected in sequence, an input end of the analog switch circuit 91 is connected with an input end two 411, and the control unit two 93 is connected with the main control unit 101.
The utility model discloses when well sensor access control circuit two switched on, the difference hinders the data of sensor and sends into difference and hinders sensor measuring circuit 9, carries out the collection that the difference hinders sensor data. The analog switch circuit 91 sends data of different terminals of the differential resistance sensor to the AD sampling circuit I92 in a time-sharing mode, mutual influence among the different terminals is avoided, and the AD sampling circuit II 52 adopts a differential mode for sampling, so that the sampling precision is improved.
Further, the measurement circuit 104 further includes a displacement sensor measurement circuit 5, the displacement sensor measurement circuit 5 includes a sensor interface circuit 51, an AD sampling circuit two 52 and a control unit three 53 which are connected in sequence, the sensor interface circuit 51 is connected with an input terminal two 411, and the control unit three 53 is connected with the main control unit 101.
The utility model discloses when well sensor access control circuit three switched on, displacement sensor measuring circuit 5 was sent into to displacement sensor's data, carries out the collection of displacement sensor data. The sensor interface circuit 51 is configured to convert an input signal of the displacement sensor into a differential signal, send the differential signal to the AD sampling circuit two 52 for differential sampling, and send the differential signal to the control unit three 53 for calculation.
Further, a remote control receiving circuit 12 connected to the main control unit 101 is also included.
The utility model discloses well staff can send the sensor signal that needs the strobe for main control unit 101 through the remote controller, and main control unit 101 sends control signal to input one 211, input two 411 and input three 711 respectively, and the switching on and the turn-off of control relay group one 2, relay group two 4 and relay group three 71 realize corresponding sensor signal's access.
Further, a CAN communication circuit 13 and an ethernet communication circuit 14, both connected to the main control unit 101, are also included.
Further, the first control unit 83 includes a first RS232 communication circuit 831, the second control unit 93 includes a second RS232 communication circuit 931, the third control unit 53 includes a third RS232 communication circuit 531, and the first RS232 communication circuit 831, the second RS232 communication circuit 931 and the third RS232 communication circuit 531 are all connected with the main control unit 101.
The utility model discloses well control unit one 83 is through RS232 communication circuit one 831, control unit two 93 is through RS232 communication circuit two 931, control unit three 53 is through RS232 communication circuit three 531, realize with the communication of main control unit 101, with vibrating wire sensor data, differential resistance sensor data and displacement sensor data send for main control unit 101, main control unit 101 CAN be through CAN communication circuit 13 or Ethernet communication circuit 14 with various sensor data issue the PC, be convenient for monitor and analysis various sensor data.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a general formula sensor data acquisition device for the data acquisition of multiple sensor which characterized in that: comprises that
The measurement management circuit (1) comprises a main control unit (101), an encoder circuit (102) and a measurement circuit (104), wherein the input end of the encoder circuit (102) is connected with the main control unit (101),
the relay group I (2) comprises a plurality of relays I (21) connected in parallel, each relay I (21) comprises an input end I (211) and an output end I (212), the output end I (212) is used for connecting various sensors,
a first data interface (3), a plurality of first output ends (212) are all connected with the first data interface (3),
relay group two (4), including the parallelly connected relay two (41) of a plurality of, every relay two (41) all includes input two (411) and output two (412), input two (411) with the output of encoder circuit (102) is connected, output two (412) with data interface one (3), measuring circuit (104) all connect.
2. The universal sensor data acquisition device as claimed in claim 1, wherein: the intelligent control system is characterized by further comprising a bus transceiver (103), wherein the input end of the bus transceiver (103) is connected with the main control unit (101), and the output end of the bus transceiver (103) is connected with the second input end (411) and the encoder circuit (102).
3. The universal sensor data acquisition device as claimed in claim 1, wherein: still include detection channel (7), detection channel (7) include relay group three (71), data interface two (72) and switch tube circuit (73), relay group three (71) include input three (711) and output three (712), input three (711) pass through switch tube circuit (73) with main control unit (101) are connected, output three (712) with data interface two (72) are connected, data interface two (72) still with output two (412) are connected.
4. The universal sensor data acquisition device as claimed in claim 1, wherein: the measuring circuit (104) comprises a vibrating wire sensor measuring circuit (8), the vibrating wire sensor measuring circuit (8) comprises a first control unit (83) connected with the main control unit (101), and further comprises a frequency measuring circuit (81) and a temperature measuring circuit (82) which are both connected with the first control unit (83),
the frequency measurement circuit (81) comprises an excitation circuit (811), an amplification circuit (812) and a phase-locked loop circuit (813), the input end of the excitation circuit (811) is connected with the first control unit (83), the output end of the excitation circuit (811) is connected with the second input end (411), the input end of the amplification circuit (812) is connected with the output end of the excitation circuit (811), the output end of the amplification circuit (812) is connected with the first control unit (83) through the phase-locked loop circuit (813),
the temperature measuring circuit (82) comprises a synchronous voltage/frequency converter (821) and a level conversion circuit (822) which are connected in sequence, wherein the input end of the synchronous voltage/frequency converter (821) is connected with the second input end (411), and the level conversion circuit (822) is connected with the first control unit (83).
5. The universal sensor data acquisition device as claimed in claim 1, wherein: measuring circuit (104) still includes poor sensor measuring circuit (9), poor sensor measuring circuit (9) are including analog switch circuit (91), AD sampling circuit (92) and the control unit two (93) that connect gradually, analog switch circuit (91) the input with input two (411) are connected, control unit two (93) with main control unit (101) are connected.
6. The universal sensor data acquisition device as claimed in claim 1, wherein: measuring circuit (104) still includes displacement sensor measuring circuit (5), displacement sensor measuring circuit (5) are including sensor interface circuit (51), AD sampling circuit two (52) and the third (53) of the control unit that connect gradually, sensor interface circuit (51) with input two (411) are connected, the third (53) of the control unit with main control unit (101) are connected.
7. The universal sensor data acquisition device as claimed in claim 1, wherein: the remote control device also comprises a remote control receiving circuit (12) connected with the main control unit (101).
8. The universal sensor data acquisition device as claimed in claim 1, wherein: the intelligent control system also comprises a CAN communication circuit (13) and an Ethernet communication circuit (14) which are both connected with the main control unit (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921136293.0U CN210038499U (en) | 2019-07-18 | 2019-07-18 | Universal sensor data acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921136293.0U CN210038499U (en) | 2019-07-18 | 2019-07-18 | Universal sensor data acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210038499U true CN210038499U (en) | 2020-02-07 |
Family
ID=69350082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921136293.0U Expired - Fee Related CN210038499U (en) | 2019-07-18 | 2019-07-18 | Universal sensor data acquisition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210038499U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116907317A (en) * | 2023-09-13 | 2023-10-20 | 基康仪器股份有限公司 | Automatic identification device and method for vibrating wire type sensor and differential resistance type sensor |
-
2019
- 2019-07-18 CN CN201921136293.0U patent/CN210038499U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116907317A (en) * | 2023-09-13 | 2023-10-20 | 基康仪器股份有限公司 | Automatic identification device and method for vibrating wire type sensor and differential resistance type sensor |
| CN116907317B (en) * | 2023-09-13 | 2023-12-22 | 基康仪器股份有限公司 | Automatic identification device and method for vibrating wire type sensor and differential resistance type sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202939289U (en) | Battery pack health state evaluation system | |
| CN101355575B (en) | System and method for monitoring civil engineering strained base on CAN network | |
| CN202886514U (en) | Direct current (DC) system grounding detector | |
| CN202330663U (en) | Voltage collecting circuit for single battery of battery pack | |
| CN210038499U (en) | Universal sensor data acquisition device | |
| CN202757663U (en) | Pressure-type water level measuring device | |
| CN211905566U (en) | Fault positioning system for power cable abnormity monitoring | |
| CN217063914U (en) | Tunnel vibrating wire sensor acquisition system based on wireless ad hoc network communication | |
| CN102183571A (en) | Device for monitoring underground water seepage with excitation-at-the-mass method | |
| CN109060005B (en) | Intelligent acquisition system for large building structure safety | |
| CN106292451A (en) | A kind of data acquisition based on vibrating wire sensor and transmission system and method for work | |
| CN111147958A (en) | Wireless synchronous acquisition piling monitoring device and method | |
| CN2927038Y (en) | Reinforcing-bar concrete cathode protecting monitor | |
| CN210071174U (en) | Multifunctional wireless temperature measuring device for electrical contact | |
| CN202018440U (en) | Charging-method underground-water leakage-monitoring device | |
| CN206517162U (en) | A kind of network load detector | |
| CN213067929U (en) | Multichannel vibrating wire acquisition instrument based on FPGA parallel processing | |
| CN217766609U (en) | Multi-path synchronous dynamic vibrating wire signal testing and analyzing circuit | |
| CN219799641U (en) | Remote power transmission local side device and system | |
| CN211264450U (en) | Integrated program-controlled acquisition instrument based on vibrating wire sensor | |
| CN218631038U (en) | Electric energy wireless acquisition device for port direct current field bridge | |
| CN205038787U (en) | Circuit terminal voltage collection system based on zigbee | |
| CN204946328U (en) | A kind of construction environment noise-monitoring equipment based on ZigBee technology | |
| CN214502443U (en) | Wireless intelligent dip angle measuring device | |
| CN213302473U (en) | Power supply monitoring system of testing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200207 Termination date: 20200718 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |