CN217037165U - Intelligent information transmission system - Google Patents
Intelligent information transmission system Download PDFInfo
- Publication number
- CN217037165U CN217037165U CN202123366702.6U CN202123366702U CN217037165U CN 217037165 U CN217037165 U CN 217037165U CN 202123366702 U CN202123366702 U CN 202123366702U CN 217037165 U CN217037165 U CN 217037165U
- Authority
- CN
- China
- Prior art keywords
- resistor
- capacitor
- circuit
- operational amplifier
- isolation
- 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.)
- Active
Links
Images
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The utility model discloses an intelligent information transmission system, which comprises: the signal acquisition device, the signal conditioning circuit, the analog-to-digital converter, the controller, the second isolation circuit and the communication circuit are sequentially connected; the signal conditioning circuit includes: the circuit comprises a filter circuit, a first isolation circuit and an amplitude adjusting circuit which are connected in sequence. By adopting the utility model, the signal can be conditioned, the interference signal can be removed, the MCU can conveniently make analysis and judgment, and the noise of the communication circuit can be isolated.
Description
Technical Field
The utility model relates to the field of information transmission, in particular to an intelligent information transmission system.
Background
People are not contacted with information all the time in daily life. When information is attenuated and weakened in the transmission process, and signals are subjected to interference and the like, so that the signals are input into the processor, the processor sometimes makes wrong analysis and judgment on the signals, and when the MCU transmits the signals through the communication circuit, noise often exists in the communication circuit, and the MCU cannot be isolated from the noise of the communication circuit. Therefore, the inventor of the present invention provides an intelligent information transmission system to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, an object of the present invention is to provide an intelligent information transmission system, which can condition signals, remove interference signals, facilitate the MCU to make analysis and judgment, and isolate noise of a communication circuit.
Based on this, the utility model provides an intelligent information transmission system, which comprises:
the signal acquisition device, the signal conditioning circuit, the analog-to-digital converter, the controller, the second isolation circuit and the communication circuit are sequentially connected;
the signal conditioning circuit includes: the circuit comprises a filter circuit, a first isolation circuit and an amplitude adjusting circuit which are connected in sequence.
Wherein the filter circuit comprises: a band pass filter.
Wherein the band pass filter includes: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first capacitor, a second capacitor, a first operational amplifier and a second operational amplifier; one end of the third resistor is connected with the signal collector, the other end of the third resistor is respectively connected with one end of the fourth resistor, one end of the fifth resistor and the inverted input end of the first operational amplifier, the non-inverting input end of the first operational amplifier is grounded, the output end of the first operational amplifier is respectively connected with the other end of the fifth resistor and one end of the first resistor, the other end of the first resistor is respectively connected with one end of a sixth resistor, one end of a first capacitor and one end of a second capacitor, the other end of the sixth resistor is grounded, the other end of the first capacitor is connected with one end of a second resistor, the other end of the first capacitor is also connected with the output end of a second operational amplifier, the other end of the second capacitor is connected with the other end of the second resistor, the other end of the second capacitor is also connected with the inverted input end of the second operational amplifier, the non-inverting input end of the second operational amplifier is grounded, and the other end of the fourth resistor is connected with the output end of the second operational amplifier.
Wherein the first isolation circuit comprises: a voltage follower.
Wherein the amplitude adjustment circuit comprises: a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a first triode, a third capacitor, a fourth capacitor and a fifth capacitor; one end of the third capacitor is connected with the output end of the isolation circuit, the other end of the third capacitor is respectively connected with the base electrode of the first triode, one end of the seventh resistor and one end of the eighth resistor, the other end of the seventh resistor is respectively connected with the power VCC and one end of the ninth resistor, the other end of the ninth resistor is respectively connected with the collector electrode of the first triode and one end of the fourth capacitor, the other end of the fourth capacitor is used as the output end of the amplitude adjusting circuit, the other end of the eighth resistor is grounded, the emitter electrode of the first triode is respectively connected with one end of the tenth resistor and one end of the fifth capacitor, the other end of the tenth resistor and the other end of the fifth capacitor are both connected with one end of the eleventh resistor, and the other end of the eleventh resistor is grounded.
Wherein the second isolation circuit comprises: the first isolation chip, the twelfth resistor and the thirteenth resistor; the second pin of the first isolation chip is electrically connected with a first power supply end after being connected with the twelfth resistor in series, the third pin of the first isolation chip is electrically connected with the signal output end of the controller, the fifth pin of the first isolation chip is connected with a simulation ground, the sixth pin of the first isolation chip is electrically connected with the signal receiving end of the communication circuit, the seventh pin of the first isolation chip is electrically connected with the eighth pin and then is electrically connected with a second power supply end, and the thirteenth resistor is electrically connected between the second power supply end and the sixth pin of the first isolation chip.
Wherein the controller includes: a PLC controller.
By adopting the utility model, the signal collector such as a pressure sensor and other signal collecting devices are used for collecting signals, the signal conditioning circuit is used for filtering the collected signals to remove interference signals and carrying out amplitude adjustment on the collected weak signals to amplify the signals, and the first isolating circuit is used for isolating the influence between the filter circuit and the amplitude adjusting circuit. The analog-to-digital converter is used for converting an analog signal into a digital signal, the controller analyzes and judges according to the digital signal sent by the analog-to-digital converter and outputs a signal to the second isolation circuit, and the second isolation circuit is used for isolating the noise of the communication circuit to the controller. The communication circuit is used for outputting the signal to an external terminal device. By adopting the utility model, the judgment of the controller on the signal can be more accurate, the noise from the communication circuit is isolated, and the controller is further prevented from making misjudgment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of an intelligent information transmission system provided by an embodiment of the present invention;
FIG. 2 is a schematic diagram of a bandpass filter provided by an embodiment of the utility model;
fig. 3 is a schematic diagram of an amplitude adjustment circuit according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic diagram of an intelligent information transmission system provided in an embodiment of the present invention, where the system includes:
the signal acquisition device 101, the signal conditioning circuit 102, the analog-to-digital converter 103, the controller 104, the second isolation circuit 105 and the communication circuit 106 are connected in sequence;
the signal conditioning circuit includes: the circuit comprises a filter circuit, a first isolation circuit and an amplitude adjusting circuit which are connected in sequence.
Wherein the filter circuit comprises: a band pass filter.
The communication circuit is prior art.
The signal collector comprises a pressure sensor, a current sensor, a temperature and humidity sensor and other signal collecting devices.
The flow direction of the signals sequentially goes from the signal collector to the signal conditioning circuit, then to the analog-to-digital converter and then to the controller, and the MCU analyzes and judges the signals and then sends the signals to external terminal equipment sequentially through the second isolation circuit and the communication circuit.
It should be noted that, in the present invention, the analog-to-digital converter and the second isolation circuit are directly connected to the controller, the controller does not control the signal conditioning circuit, the second isolation circuit, or the signal collector, and there is no interface connected to the signal conditioning circuit, the second isolation circuit, or the signal collector.
The controller analyzes and processes the input signal, the analyzing and processing process can be that a signal value corresponding to the signal is obtained according to the signal, the signal value is compared with a preset signal value range, and if the signal value exceeds the signal value range, the controller sends an alarm signal to external terminal equipment. For example, the controller obtains a pressure value according to the pressure signal, compares the pressure value with a preset pressure value range, and if the pressure value exceeds the preset pressure value range, the controller sends an alarm signal to the external terminal device.
Fig. 2 is a schematic diagram of a bandpass filter provided in an embodiment of the present invention, where the bandpass filter includes: the circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a first capacitor C1, a second capacitor C2, a first operational amplifier AR1 and a second operational amplifier AR 2; one end of the third resistor R3 is connected to the signal collector, the other end of the third resistor R3 is connected to one end of the fourth resistor R4, one end of the fifth resistor R5 and the inverting input end of the first operational amplifier AR1, the non-inverting input end of the first operational amplifier AR1 is grounded, the output end of the first operational amplifier AR1 is connected to the other end of the fifth resistor R5 and one end of the first resistor R1, the other end of the first resistor R1 is connected to one end of the sixth resistor R6, one end of the first capacitor C1 and one end of the second capacitor C2, the other end of the sixth resistor R6 is grounded, the other end of the first capacitor C1 is connected to one end of the second resistor R2, the other end of the first capacitor C1 is further connected to the output end of the second operational amplifier AR2, the other end of the second capacitor C2 is connected to the other end of the second resistor R2, the other end of the second capacitor C2 is further connected to the inverting input end of the second operational amplifier AR2, the non-inverting input end of the second operational amplifier AR2 is grounded, and the other end of the fourth resistor R4 is connected to the output end of the second operational amplifier AR 2.
The band-pass filter can have a higher Q value on the premise of realizing a lower order, so that the frequency transfer interval of a pass band and a stop band is narrower, band-pass filtering can be rapidly transited between the pass band and the stop band, and steeper frequency cut-off characteristics and better filtering effect are realized.
Wherein the first isolation circuit comprises: a voltage follower. The voltage follower is used for isolating mutual influence between the filter circuit and the amplitude adjusting circuit.
Fig. 3 is a schematic diagram of an amplitude adjustment circuit provided by an embodiment of the present invention, where the amplitude adjustment circuit includes: a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a first triode T1, a third capacitor C3, a fourth capacitor C4 and a fifth capacitor C5; one end of the third capacitor C3 is connected to the output end of the isolation circuit, and the other end is connected to the base of the first transistor T1, one end of the seventh resistor R7, and one end of the eighth resistor R8, the other end of the seventh resistor R7 is connected to a power source VCC and one end of the ninth resistor R9, the other end of the ninth resistor R9 is respectively connected to the collector of the first transistor T1 and one end of the fourth capacitor C4, the other end of the fourth capacitor C4 is used as the output end of the amplitude adjusting circuit, the other end of the eighth resistor R8 is grounded, an emitter of the first transistor T1 is connected to one end of the tenth resistor R10 and one end of the fifth capacitor, the other end of the tenth resistor R10 and the other end of the fifth capacitor R5 are both connected to one end of the eleventh resistor R11, and the other end of the eleventh resistor R11 is grounded.
The amplitude adjusting circuit is a common emitter amplifying circuit and is used for amplifying an input signal, the seventh resistor, the eighth resistor, the ninth resistor, the tenth resistor and the eleventh resistor determine a static operating point and a voltage gain, the third capacitor and the fifth capacitor are coupling capacitors, the fourth capacitor is a bypass capacitor, and the tenth resistor and the eleventh resistor can improve the stability of the amplifying circuit and inhibit the Q point temperature drift of the circuit. And meanwhile, alternating current negative feedback is introduced, the voltage gain control is simple, the voltage gain can be directly calculated by a ninth resistor and a tenth resistor, the slope of an alternating current load line is low, the amplification is not easy to distort, and the waveform is attractive.
Wherein the second isolation circuit comprises: a first isolated chip, a twelfth resistor R12 and a thirteenth resistor R13; the second pin of the first isolation chip is electrically connected with a first power supply end after being connected with the twelfth resistor R12 in series, the third pin of the first isolation chip is electrically connected with the signal output end of the controller, the fifth pin of the first isolation chip is connected with the analog ground, the sixth pin of the first isolation chip is electrically connected with the signal receiving end of the communication circuit, the seventh pin of the first isolation chip is electrically connected with the eighth pin and then is electrically connected with a second power supply end, and the thirteenth R13 is electrically connected between the second power supply end and the sixth pin of the first isolation chip.
The model number of the first isolation chip is preferably 6N 137.
Wherein the controller includes: a PLC controller.
By adopting the utility model, the signal collector such as a pressure sensor and other signal collecting devices are used for collecting signals, the signal conditioning circuit is used for filtering the collected signals to remove interference signals and carrying out amplitude adjustment on the collected weak signals to amplify the signals, and the first isolating circuit is used for isolating the influence between the filter circuit and the amplitude adjusting circuit. The analog-to-digital converter is used for converting an analog signal into a digital signal, the controller analyzes and judges according to the digital signal sent by the analog-to-digital converter and outputs a signal to the second isolation circuit, and the second isolation circuit is used for isolating the noise of the communication circuit to the controller. The communication circuit is used for outputting the signal to an external terminal device. By adopting the utility model, the judgment of the controller on the signal can be more accurate, the noise from the communication circuit is isolated, and the controller is further prevented from making misjudgment.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (7)
1. An intelligent information transmission system, comprising:
the signal acquisition device, the signal conditioning circuit, the analog-to-digital converter, the controller, the second isolation circuit and the communication circuit are sequentially connected;
the signal conditioning circuit includes: the circuit comprises a filter circuit, a first isolation circuit and an amplitude adjusting circuit which are connected in sequence.
2. The intelligent transmission system of information according to claim 1, wherein said filter circuit comprises: a band pass filter.
3. The intelligent information transmission system of claim 2, wherein the band-pass filter comprises: the circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first capacitor, a second capacitor, a first operational amplifier and a second operational amplifier; one end of the third resistor is connected with the signal collector, the other end of the third resistor is respectively connected with one end of the fourth resistor, one end of the fifth resistor and the inverting input end of the first operational amplifier, the non-inverting input end of the first operational amplifier is grounded, the output end of the first operational amplifier is respectively connected with the other end of the fifth resistor and one end of the first resistor, the other end of the first resistor is respectively connected with one end of a sixth resistor, one end of a first capacitor and one end of a second capacitor, the other end of the sixth resistor is grounded, the other end of the first capacitor is connected with one end of the second resistor, the other end of the first capacitor is also connected with the output end of the second operational amplifier, the other end of the second capacitor is connected with the other end of the second resistor, the other end of the second capacitor is also connected with the inverted input end of the second operational amplifier, the non-inverting input end of the second operational amplifier is grounded, and the other end of the fourth resistor is connected with the output end of the second operational amplifier.
4. The intelligent transmission system of information of claim 1, wherein the first isolation circuit comprises: a voltage follower.
5. The intelligent transmission system of information according to claim 1, wherein said amplitude adjustment circuit comprises: the circuit comprises a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a first triode, a third capacitor, a fourth capacitor and a fifth capacitor; one end of the third capacitor is connected with the output end of the isolation circuit, the other end of the third capacitor is connected with the base electrode of the first triode, one end of the seventh resistor and one end of the eighth resistor respectively, the other end of the seventh resistor is connected with a power VCC respectively and one end of the ninth resistor respectively, the other end of the ninth resistor is connected with the collector electrode of the first triode and one end of the fourth capacitor respectively, the other end of the fourth capacitor serves as the output end of the amplitude adjusting circuit, the other end of the eighth resistor is grounded, the emitter electrode of the first triode is connected with one end of the tenth resistor and one end of the fifth capacitor respectively, the other end of the tenth resistor and the other end of the fifth capacitor are both connected with one end of the eleventh resistor, and the other end of the eleventh resistor is grounded.
6. The intelligent transmission system of information of claim 1, wherein the second isolation circuit comprises: the first isolation chip, the twelfth resistor and the thirteenth resistor; the second pin of the first isolation chip is electrically connected with a first power supply end after being connected with the twelfth resistor in series, the third pin of the first isolation chip is electrically connected with the signal output end of the controller, the fifth pin of the first isolation chip is connected with a simulation ground, the sixth pin of the first isolation chip is electrically connected with the signal receiving end of the communication circuit, the seventh pin of the first isolation chip is electrically connected with the eighth pin and then is electrically connected with a second power supply end, and the thirteenth resistor is electrically connected between the second power supply end and the sixth pin of the first isolation chip.
7. The intelligent transmission system of information according to any one of claims 1-6, wherein the controller comprises: a PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123366702.6U CN217037165U (en) | 2021-12-30 | 2021-12-30 | Intelligent information transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123366702.6U CN217037165U (en) | 2021-12-30 | 2021-12-30 | Intelligent information transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217037165U true CN217037165U (en) | 2022-07-22 |
Family
ID=82442805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123366702.6U Active CN217037165U (en) | 2021-12-30 | 2021-12-30 | Intelligent information transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217037165U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116719266A (en) * | 2023-08-09 | 2023-09-08 | 浙江国利信安科技有限公司 | Control apparatus |
-
2021
- 2021-12-30 CN CN202123366702.6U patent/CN217037165U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116719266A (en) * | 2023-08-09 | 2023-09-08 | 浙江国利信安科技有限公司 | Control apparatus |
| CN116719266B (en) * | 2023-08-09 | 2023-11-03 | 浙江国利信安科技有限公司 | Control apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102755161B (en) | Lead drop detection device and method for electrocardio monitoring | |
| CN209946260U (en) | Improved signal sampling circuit | |
| CN217037165U (en) | Intelligent information transmission system | |
| CN108089092B (en) | Generator rotor winding leakage detection device | |
| CN206756755U (en) | A kind of stress wave signal conditioning device | |
| CN110772232B (en) | Electrode falling detection circuit and detection method | |
| CN203732610U (en) | Current detection device | |
| CN109962871B (en) | ASK amplitude modulation signal envelope detection system | |
| CN107765084B (en) | Universal voltage input power frequency signal frequency measurement system | |
| CN212259135U (en) | Computer image acquisition device | |
| CN209281373U (en) | Direct current biasing for human body Collection equipment eliminates circuit | |
| CN103487631B (en) | Modulation-demodulation type current sensor | |
| CN202505348U (en) | Lead-fall detector for electrocardingraphy | |
| CN112630524A (en) | Low-current signal acquisition processing circuit and acquisition processing method | |
| CN207817126U (en) | A kind of generator amature winding earth detector | |
| CN109548410A (en) | Audio signal sample circuit | |
| CN206026328U (en) | Be applied to flexible pulse piezoelectric sensor's modulate circuit | |
| CN117713746B (en) | Piezoelectric signal conditioning circuit | |
| CN217484841U (en) | Computer hardware detection device | |
| CN207036332U (en) | A kind of signal processing system of high pressure flow auto-controlling apparatus | |
| CN220603562U (en) | Hidden danger discharge signal acquisition and filter circuit for cable collector circuit | |
| CN221405862U (en) | Insulation impedance detection circuit | |
| CN213402819U (en) | Filtering anti-interference circuit | |
| CN213601108U (en) | Microcomputer time control switch | |
| CN211263592U (en) | Direct-current voltage sampling and conditioning circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |