CN203824582U - Excavation construction environment monitoring device based on power line carrier communication function - Google Patents
Excavation construction environment monitoring device based on power line carrier communication function Download PDFInfo
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- CN203824582U CN203824582U CN201420201178.8U CN201420201178U CN203824582U CN 203824582 U CN203824582 U CN 203824582U CN 201420201178 U CN201420201178 U CN 201420201178U CN 203824582 U CN203824582 U CN 203824582U
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- 238000009412 basement excavation Methods 0.000 title abstract 3
- 239000000779 smoke Substances 0.000 claims abstract description 27
- 238000012544 monitoring process Methods 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 230000007613 environmental effect Effects 0.000 claims description 29
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- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000012421 spiking Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
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Abstract
The utility model discloses an excavation construction environment monitoring device based on a power line carrier communication function. The device comprises a single-chip microcomputer control circuit, a humiture acquisition circuit, a photosensitive monitoring circuit, a smoke monitoring circuit, an infrared human body monitoring circuit, a wired transmission circuit, a power line carrier communication circuit and a power supply circuit for supplying power for the above circuits. The single-chip microcomputer control circuit is a minimum system composed of a single-chip microcomputer chip and peripheral circuits thereof. Compared with the prior art, the excavation construction environment monitoring device provided by the utility model has the advantages that the device is solid-state integrated, and is capable of simultaneously detecting various environment parameters, such as temperature, humidity, illuminance and smoke concentration; and the device is based on the power line carrier technology, and carries out transmission with power lines, so that additional wires are not required, the difficulty of networking is reduced, and the cost of wiring is lowered.
Description
Technical field
The utility model relates to a kind of environment comprehensive parameter monitor device, especially the foundation pit construction environmental monitor based on power line carrier, PLC function.
Background technology
Power line carrier communication, adopts transmission line of electricity to complete bidirectional data transfers as telecommunication media, saves extra wiring, simplifies networking difficulty, reduces wiring cost.Interfacing as a computing machine and terminal communication is obtaining significant progress.At present in the following low-voltage power supply system of 400V, the technical bottlenecks such as the interference that restriction power line carrier exists, line loss, arrowband have effectively been solved, and it is multi-field that the technology that wherein adapts to low strap data transmission has applied to industry automatic control, intelligent appliance control, fireproof alarming etc.
Along with the enhancing of human society to energy-conserving and environment-protective consciousness, environmental monitor is as a kind of sensing device recently occurring, development is just being widely used in fields such as energy management and environmental managements.Conventionally, environment monitoring device for the inner place of building construction thing is by the separately monitoring of each environmental parameter, the main discrete parts such as electronic thermostat, light sensor, smoke transducer and video probe that adopt, when needs are monitored various environmental parameters simultaneously, multiple collecting device and relevant auxiliary facility need to be installed, so both increase installation cost, also increased maintenance difficulties.If adopt the monitoring equipment of different manufacturers also may occur between equipment not compatible mutually problem.Meanwhile, data communication and interface protocol shortage uniform rules due to different monitoring equipments, be difficult to realize systematization combination, can not meet growing intelligent management and control demand.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of foundation pit construction environmental monitor based on power line carrier, PLC function is provided.
The utility model is achieved through the following technical solutions:
A kind of foundation pit construction environmental monitor based on power line carrier, PLC function, comprise single chip machine controlling circuit, humiture collection circuit, photosensitive observation circuit, smoke monitoring circuit, infrared human body observation circuit, wire transmission circuit, wireless transmission circuit, power line carrier communication circuit and be the power circuit of foregoing circuit power supply, described single chip machine controlling circuit is the minimum system that singlechip chip and peripheral circuit thereof form.
Humiture collection circuit comprises humiture collection sensor, it is connected with singlechip chip by 1 two-way single bus interface; Photosensitive observation circuit comprises that the analog signal output of photosensitive pick-up transducers, photosensitive observation circuit and an I/O interface with A/D translation function of singlechip chip are connected; Smoke monitoring circuit comprises that the analog signal output of smoke transducer, smoke monitoring circuit and the 2nd I/O interface with A/D translation function of singlechip chip are connected; Infrared human body observation circuit comprises pyroelectric infrared sensor and peripheral circuit thereof, and the signal output part of infrared human body observation circuit is connected with the I/O interface of singlechip chip; Described power line carrier communication circuit comprises coupled circuit, filtering circuit, power amplifier and MCU controller, and the signal output part of described MCU controller is connected with the I/O interface of singlechip chip.
As the further optimization of such scheme, described coupled circuit is comprised of coupling transformer BT and the resistance R 1, capacitor C 1 and the inductance L 1 that are parallel to the series connection on the former limit of coupling transformer BT, and the two ends of resistance R 1 connect respectively line of electric force.
Further optimization as such scheme, described filtering circuit comprises the parallel resonance formula passive bandpass filters that capacitor C 2, resistance R 2 and inductance L 2 form, the signal output part of parallel resonance formula passive bandpass filters is connected to the signal input part of MCU controller by coupling capacitance C3, the signal input part of parallel resonance formula passive bandpass filters and coupling transformer BT secondary are in parallel.
As the further optimization of such scheme, described filtering circuit also comprises voltage stabilizing diode D1, the D2 that is parallel to equally coupling transformer BT secondary, the star protective circuit of voltage regulation that D3 forms.
Further optimization as such scheme, described power amplifier comprises a filtering circuit and an amplifying circuit, wherein filtering circuit is the bandpass filter being comprised of capacitor C 4 and inductance L 3, amplifying circuit is the push-pull amplifier circuit of the mutual symmetry that is comprised of positive-negative-positive triode T1, T2 and positive-negative-positive triode T3, T4, the output terminal of push-pull amplifier circuit is connected to the high-pressure side of coupling transformer BT secondary through bandpass filter, the input end of push-pull amplifier circuit is connected to the signal output part of MCU controller through coupling capacitance C5.
As the further optimization of such scheme, described singlechip chip is STC12C5A60S2 single-chip microcomputer.
As the further optimization of such scheme, described pyroelectricity numeral infrared sensor is AM412 pyroelectricity numeral infrared sensor.
As the further optimization of such scheme, described humiture collection sensor is DHT22 digital hygro sensor.
As the further optimization of such scheme, described smoke transducer is MQ2 smoke transducer.
The principle of work of the foundation pit construction environmental monitor based on power line carrier, PLC function of the present utility model: when the foundation pit construction environmental monitor based on power line carrier, PLC function receives data, coupled circuit picks up the protocol signal being carried on line of electric force, and eliminate the noise level irrelevant with protocol signal by wave filter, after MCU controller demodulation process, by signal restoring, be objective side's data message, then output to terminal device by system interface.While sending data, the data message that STC12C5A60S2 single-chip microcomputer transmits needs by system interface is submitted to MCU controller, MCU controller is changed into carrier signal according to communication protocol, by power amplifier, amplify with coupled circuit and load successively, send on line of electric force, and realize communications by line of electric force.
The utility model has the following advantages compared to existing technology: the foundation pit construction environmental monitor based on power line carrier, PLC function of the present utility model, the solid-state integrating device of this monitor, can survey simultaneously and gather various environmental parameters, can not only perception air themperature, humidity, illuminance and dust concentration, and can also use near infrared ray Detection Techniques perception human body; Foundation pit construction environmental monitor based on power line carrier, PLC function of the present utility model, based on PLC technology, transmits by line of electric force, saves extra wiring, simplifies networking difficulty, reduces wiring cost.
Accompanying drawing explanation
Fig. 1 is the circuit structure block diagram of the foundation pit construction environmental monitor of the utility model based on power line carrier, PLC function.
Fig. 2 is the structured flowchart of power line carrier communication circuit of the present utility model.
Fig. 3 is the circuit theory diagrams of power line carrier communication circuit of the present utility model.
Embodiment
Below embodiment of the present utility model is elaborated; the present embodiment is implemented take technical solutions of the utility model under prerequisite; provided detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
Referring to Fig. 1, a kind of foundation pit construction environmental monitor based on power line carrier, PLC function, comprise single chip machine controlling circuit, humiture collection circuit, photosensitive observation circuit, smoke monitoring circuit, infrared human body observation circuit, wire transmission circuit, wireless transmission circuit, power line carrier communication circuit and be the power circuit of foregoing circuit power supply, single chip machine controlling circuit is the minimum system that singlechip chip and peripheral circuit thereof form.
Humiture collection circuit comprises humiture collection sensor, it is connected with singlechip chip by 1 two-way single bus interface; Photosensitive observation circuit comprises that the analog signal output of photosensitive pick-up transducers, photosensitive observation circuit and an I/O interface with A/D translation function of singlechip chip are connected; Smoke monitoring circuit comprises that the analog signal output of smoke transducer, smoke monitoring circuit and the 2nd I/O interface with A/D translation function of singlechip chip are connected; Infrared human body observation circuit comprises pyroelectric infrared sensor and peripheral circuit thereof, and the signal output part of infrared human body observation circuit is connected with the I/O interface of singlechip chip; Described power line carrier communication circuit comprises coupled circuit 2, filtering circuit 3, power amplifier 4 and MCU controller 5, and the signal output part of MCU controller is connected with the I/O interface of singlechip chip.
Optimize, singlechip chip is STC12C5A60S2 single-chip microcomputer, and STC12C5A60S2 single-chip microcomputer travelling speed is 8～12 times of common single-chip microcomputer, and overall operation speed and data-handling capacity improve greatly.And STC12C5A60S2 single-chip microcomputer carries 8 road AD conversion interfaces, while STC12C5A60S2 singlechip chip has 64K EEPROM and can meet system program and data storage requirement.
Referring to Fig. 2 and Fig. 3, power line carrier communication circuit comprises coupled circuit, filtering circuit, power amplifier and MCU controller, and the signal output part of described MCU controller is connected with the I/O interface of singlechip chip.Coupled circuit is comprised of coupling transformer BT and the resistance R 1, capacitor C 1 and the inductance L 1 that are parallel to the series connection on the former limit of coupling transformer BT, and the two ends of resistance R 1 connect respectively line of electric force.Realized the circuit isolation of communication module and line of electric force.
Filtering circuit comprises the parallel resonance formula passive bandpass filters that capacitor C 2, resistance R 2 and inductance L 2 form, the signal output part of parallel resonance formula passive bandpass filters is connected to the signal input part of MCU controller by coupling capacitance C3, the signal input part of parallel resonance formula passive bandpass filters and coupling transformer BT secondary are in parallel.Destruction for fear of the spike of power circuit highfield to system, filtering circuit also comprises voltage stabilizing diode D1, the D2 that is parallel to equally coupling transformer BT secondary, the star protective circuit of voltage regulation that D3 forms.When occurring that signal peak voltage is greater than voltage stabilizing threshold value, stabilivolt can be clamped down on peak voltage in controlled range.For differential mode spiking, D1, D2 form 1 group of bi-directional voltage stabilizing pipe; For common mode spiking, by D1, D3 and D2, D3, form two ground circuits altogether respectively, be equivalent to 2 groups of bi-directional voltage stabilizing pipes.
Power amplifier comprises a filtering circuit and an amplifying circuit, wherein filtering circuit is the bandpass filter being comprised of capacitor C 4 and inductance L 3, amplifying circuit is the push-pull amplifier circuit of the mutual symmetry that is comprised of positive-negative-positive triode T1, T2 and positive-negative-positive triode T3, T4, the output terminal of push-pull amplifier circuit is connected to the high-pressure side of coupling transformer BT secondary through bandpass filter, the input end of push-pull amplifier circuit is connected to the signal output part of MCU controller through coupling capacitance C5.Wave filter is secondary, the third harmonic of filtering and shaping modulated carrier signal effectively, improves the transfer efficiency of transmitted signal.The carrier (boc) modulated signals of output, by the power amplifier amplification that gains, makes transmitted signal meet the demand of the undistorted level of system.
MCU controller is a micro-system unit based on 8651 single-chip microcomputers, and two of its inner integrated sending and receivings are part independently.Transmitting portion is built-in element circuits such as FSK modulator, sine-wave generator, current-mode control oscillator, automatic gain control circuit (ALC) and output power amplifier.Receiving unit comprises the element circuits such as limiting amplifier, phase locked loop demodulator, low-pass filter, the clamped circuit of direct current and noise filter.The control pin of TX/RX for sending or receiving, when TX/RX is high level, circuit is in sending mode of operation, data-signal is from P17 input FSK modulator, form switch and control the triangular wave of electric current driving oscillator generation ± 2.2% frequency deviation, through sine wave shaped circuit sine wave output signal, then after power amplification, by pickup coil, be transferred to power circuit and get on.ALC (automatic gain control circuit) is that while guaranteeing power circuit load variations, outgoing carrier level remains in certain level range, so that systems stabilisation state.
Humiture collection circuit comprises humiture collection sensor, it is connected with singlechip chip by 1 two-way single bus interface; Humiture collection sensor adopts DHT22 digital hygro sensor.After single chip machine controlling circuit sends reading order, DHT22 digital hygro sensor can read current environment humiture, and by DATD pin, data is sent to STC12C5A60S2 single-chip microcomputer, completes reading and transmitting of humiture.
Photosensitive observation circuit comprises that the analog signal output of photosensitive pick-up transducers, photosensitive observation circuit and an I/O interface with A/D translation function of singlechip chip are connected.The analog output end of light sensor is connected with the AD port of STC12C5A60S2 single-chip microcomputer.In concrete enforcement, at STC12C5A60S2 single-chip microcomputer, start photosensitive monitoring facilities, the analog voltage of light sensor output terminal is transformed to correlated digital amount, according to mathematical model, be converted to corresponding illumination intensity value.
Smoke monitoring circuit comprises that the analog signal output of smoke transducer, smoke monitoring circuit and the 2nd I/O interface with A/D translation function of singlechip chip are connected, and smoke transducer adopts MQ-2 smoke transducer.The analog output end of MQ-2 smoke transducer is connected with the AD port of STC12C5A60S2 single-chip microcomputer.At STC12C5A60S2 single-chip microcomputer, start smoke monitoring program, the analog voltage of smoke transducer output terminal is transformed to correlated digital amount, according to mathematical model, be converted to corresponding smokescope value.
Infrared human body observation circuit comprises pyroelectric infrared sensor and peripheral circuit thereof, and the signal output part of infrared human body observation circuit is connected with the I/O interface of singlechip chip.Pyroelectricity numeral infrared sensor is AM412 pyroelectricity numeral infrared sensor.The interrupt output end RQ of AM412 pyroelectricity numeral infrared sensor is connected with the external interrupt INT0 port of STC12C5A60S2 single-chip microcomputer.While starting external interrupt INT0, wait for external interrupt signal, when infrared human body monitoring circuit monitors is to indoor while having personnel activity, infrared human body observation circuit can send look-at-me to STC12C5A60S2 single-chip microcomputer, makes system enter interruption subroutine, and calls relative set subroutine.
When the foundation pit construction environmental monitor based on power line carrier, PLC function of the present utility model receives data, coupled circuit 2 picks up the protocol signal being carried on line of electric force 1, and eliminate the noise level irrelevant with protocol signal by filtering circuit 3, after MCU controller 5 demodulation process, by signal restoring, be objective side's data message, then output to terminal device by system interface 6.While sending data, the data message that STC12C5A60S2 single-chip microcomputer transmits needs by system interface 6 is submitted to MCU controller 5, MCU controller 5 is changed into carrier signal according to communication protocol, by power amplifier 4, amplify successively and coupled circuit 2 loadings, send on line of electric force 1, and realize communications by line of electric force 1.
The utility model has the following advantages compared to existing technology: the foundation pit construction environmental monitor based on power line carrier, PLC function of the present utility model, the solid-state integrating device of this monitor, can survey simultaneously and gather indoor various environmental parameters, can not only perception air themperature, humidity, illuminance and dust concentration, and can also use near infrared ray Detection Techniques perception human body; Promote building management department can understand in the real-time environmental parameter in each room and house whether have personnel in activity in real time, for the living environment of Creating Comfort provides scientific basis, for joint source is energy-conservation and disaster alarm provides support.
Foundation pit construction environmental monitor based on power line carrier, PLC function of the present utility model, based on PLC technology, transmits by line of electric force, saves extra wiring, simplifies networking difficulty, reduces wiring cost.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (9)
1. the foundation pit construction environmental monitor based on power line carrier, PLC function, it is characterized in that: comprise single chip machine controlling circuit, humiture collection circuit, photosensitive observation circuit, smoke monitoring circuit, infrared human body observation circuit, wire transmission circuit, wireless transmission circuit, power line carrier communication circuit and be the power circuit of foregoing circuit power supply, described single chip machine controlling circuit is the minimum system that singlechip chip and peripheral circuit thereof form
Humiture collection circuit comprises humiture collection sensor, it is connected with singlechip chip by 1 two-way single bus interface; Photosensitive observation circuit comprises that the analog signal output of photosensitive pick-up transducers, photosensitive observation circuit and an I/O interface with A/D translation function of singlechip chip are connected; Smoke monitoring circuit comprises that the analog signal output of smoke transducer, smoke monitoring circuit and the 2nd I/O interface with A/D translation function of singlechip chip are connected; Infrared human body observation circuit comprises pyroelectric infrared sensor and peripheral circuit thereof, and the signal output part of infrared human body observation circuit is connected with the I/O interface of singlechip chip; Described power line carrier communication circuit comprises coupled circuit, filtering circuit, power amplifier and MCU controller, and the signal output part of described MCU controller is connected with the I/O interface of singlechip chip.
2. the foundation pit construction environmental monitor based on power line carrier, PLC function according to claim 1, it is characterized in that: described coupled circuit is comprised of coupling transformer BT and the resistance R 1, capacitor C 1 and the inductance L 1 that are parallel to the series connection on the former limit of coupling transformer BT, and the two ends of resistance R 1 connect respectively line of electric force.
3. the foundation pit construction environmental monitor based on power line carrier, PLC function according to claim 1, it is characterized in that: described filtering circuit comprises the parallel resonance formula passive bandpass filters that capacitor C 2, resistance R 2 and inductance L 2 form, the signal output part of parallel resonance formula passive bandpass filters is connected to the signal input part of MCU controller by coupling capacitance C3, the signal input part of parallel resonance formula passive bandpass filters and coupling transformer BT secondary are in parallel.
4. the foundation pit construction environmental monitor based on power line carrier, PLC function according to claim 3, is characterized in that: described filtering circuit also comprises voltage stabilizing diode D1, the D2 that is parallel to equally coupling transformer BT secondary, the star protective circuit of voltage regulation that D3 forms.
5. the foundation pit construction environmental monitor based on power line carrier, PLC function according to claim 3, it is characterized in that: described power amplifier comprises a filtering circuit and an amplifying circuit, wherein filtering circuit is the bandpass filter being comprised of capacitor C 4 and inductance L 3, amplifying circuit is by positive-negative-positive triode T1, T2 and positive-negative-positive triode T3, the push-pull amplifier circuit of the mutual symmetry that T4 forms, the output terminal of push-pull amplifier circuit is connected to the high-pressure side of coupling transformer BT secondary through bandpass filter, the input end of push-pull amplifier circuit is connected to the signal output part of MCU controller through coupling capacitance C5.
6. the foundation pit construction environmental monitor based on power line carrier, PLC function according to claim 1, is characterized in that: described singlechip chip is STC12C5A60S2 single-chip microcomputer.
7. the foundation pit construction environmental monitor based on power line carrier, PLC function according to claim 1, is characterized in that: described pyroelectricity numeral infrared sensor is AM412 pyroelectricity numeral infrared sensor.
8. the foundation pit construction environmental monitor based on power line carrier, PLC function according to claim 1, is characterized in that: described humiture collection sensor is DHT22 digital hygro sensor.
9. the foundation pit construction environmental monitor based on power line carrier, PLC function according to claim 1, is characterized in that: described smoke transducer is MQ2 smoke transducer.
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| CN201420201178.8U CN203824582U (en) | 2014-04-23 | 2014-04-23 | Excavation construction environment monitoring device based on power line carrier communication function |
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| CN201420201178.8U CN203824582U (en) | 2014-04-23 | 2014-04-23 | Excavation construction environment monitoring device based on power line carrier communication function |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141281A (en) * | 2015-08-05 | 2015-12-09 | 成都君禾天成科技有限公司 | Receiving filtering circuit employing power carrier communication |
| CN105784001A (en) * | 2016-05-11 | 2016-07-20 | 南京工程学院 | Power line carrier communication-based multifunctional detection device |
| CN105790434A (en) * | 2016-03-05 | 2016-07-20 | 马骏 | Power measurement equipment employing power carrier technology |
| WO2017152316A1 (en) * | 2016-03-05 | 2017-09-14 | 马骏 | Power measurement device employing power carrier technology |
| CN107666422A (en) * | 2017-10-30 | 2018-02-06 | 苏州东奇信息科技股份有限公司 | Appliance control system based on efficient modulation demodulation power-line carrier communication |
| CN112595361A (en) * | 2020-12-09 | 2021-04-02 | 郑州铁路职业技术学院 | Tunnel construction environment detecting system |
-
2014
- 2014-04-23 CN CN201420201178.8U patent/CN203824582U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105141281A (en) * | 2015-08-05 | 2015-12-09 | 成都君禾天成科技有限公司 | Receiving filtering circuit employing power carrier communication |
| CN105790434A (en) * | 2016-03-05 | 2016-07-20 | 马骏 | Power measurement equipment employing power carrier technology |
| WO2017152316A1 (en) * | 2016-03-05 | 2017-09-14 | 马骏 | Power measurement device employing power carrier technology |
| CN105784001A (en) * | 2016-05-11 | 2016-07-20 | 南京工程学院 | Power line carrier communication-based multifunctional detection device |
| CN107666422A (en) * | 2017-10-30 | 2018-02-06 | 苏州东奇信息科技股份有限公司 | Appliance control system based on efficient modulation demodulation power-line carrier communication |
| CN112595361A (en) * | 2020-12-09 | 2021-04-02 | 郑州铁路职业技术学院 | Tunnel construction environment detecting system |
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