CN205157748U - Fire control device power monitored control system data acquisition circuit - Google Patents
Fire control device power monitored control system data acquisition circuit Download PDFInfo
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- CN205157748U CN205157748U CN201520935820.XU CN201520935820U CN205157748U CN 205157748 U CN205157748 U CN 205157748U CN 201520935820 U CN201520935820 U CN 201520935820U CN 205157748 U CN205157748 U CN 205157748U
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- acquisition circuit
- data acquisition
- lightning
- electric current
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Abstract
The utility model discloses a fire control device power monitored control system data acquisition circuit, including the electric current module of zooming for receive output current signal behind external electric current and the downscaling, conversion module is including sampling resistor R1 for the received current signal converts voltage signal into, the wave form shifts up the module for the whole wave form of receiving and raising voltage signal erupts simultaneously to serve and moves the wave form, operational amplifier module for receive and to shift up the wave form with amplifying, and send a fortune and put the wave form. Thereby this setting can obtain the AD passageway that MCU was sent to the data of gathering to correspond digital quantity of these group's data, realizes the accurate of fire control device power and real -time control. And through setting up a lightning protection circuit on the data acquisition circuit at fire control device power monitored control system, can avoid fire control device power to damage when suffering the thunderbolt, increase acquisition circuit's stability.
Description
Technical field
The utility model relates to fire fighting equipment Power Supply Monitoring equipment technical field, is specifically related to a kind of fire fighting equipment power supply monitoring system data acquisition circuit.
Background technology
The civil power of domestic standard is the alternating current of 50HZ/220V, it is the sinusoidal waveform of standard, 1-180 degree and 180-360 are the waveforms that 2 ends are contrary, 0 level for Acquisition Circuit divides positive voltage and negative voltage, gather positive voltage part to be easy to realize, gathering negative voltage part needs just can obtain correct data through process.
Application number is the Chinese patent of CN201420470261.5, disclose a kind of more piece generating positive and negative voltage Quick Acquisition circuit, comprise battery core group and voltage collection circuit that some battery cores form, described voltage collection circuit comprises some RC filtering circuits including and be connected successively that is connected with battery core both positive and negative polarity, the collection branch road of on-off circuit and gating circuit switch, voltage after this gating is processed into maximum generating positive and negative voltage absolute value by bleeder circuit and remains on magnitude of voltage in preset voltage value, and by adding circuit by slightly larger than the bias voltage of bleeder circuit output voltage maximum value and bleeder circuit output voltage superimposed, ADC chip is outputted to after eliminating negative voltage.Compared with prior art, the Quick Acquisition of voltage can be realized, utilize comparatively simple circuit realiration to eliminate negative voltage, reach the object of the Quick Acquisition of more piece generating positive and negative voltage, avoid using the high price ADC chip that can detect negative voltage, improve the performance of enterprises.
The weak point of this patent is, owing to being related to security against fire, this circuit in actual use, needs to keep long-term and connects, when running into thunderbolt, easily causing equipment malfunction or burning out, Acquisition Circuit was lost efficacy, affecting the normal use of Acquisition Circuit.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of fire fighting equipment power supply monitoring system data acquisition circuit, comprises
Electric current Zoom module, for receiving extraneous electric current and output current signal after scale smaller;
Modular converter, comprise sampling resistor R1, is converted to voltage signal for received current signal;
Shifting formwork block on waveform, for receiving and raise the overall waveform of voltage signal, concurrent serving moves waveform;
Amplifier module, for receiving and amplification moving waveform, and sends an amplifier waveform;
Anti-lightning strike lightning-protection module is also provided with between described electric current Zoom module and modular converter, described lightning-protection module comprises an a piezoresister MOV and discharge tube GDT, described piezoresister MOV one end is coupled on electric current Zoom module, discharge tube GDT connects with piezoresister MOV, and discharge tube GDT is away from one end ground connection of piezoresister MOV.
Of the present utility modelly to be set to further: be provided with between described lightning-protection module and modular converter and be used to indicate the indicating module that data acquisition circuit suffers thunderbolt state.
Of the present utility modelly to be set to further: described indicating module comprises switch element, and its controlled end is coupled between lightning-protection module and modular converter, in order to detectable voltage signals, and exports a switching signal; Control module, for receiving comparison signal and sending control signal; Alarm unit, sends alarm signal for reception control signal.
Of the present utility modelly to be set to further: described electric current Zoom module comprises Current Transmit, and the primary side of described Current Transmit connects extraneous electric current, and secondary side is electrically connected with lightning-protection module.
The utility model has the following advantages: the data collected delivered to the AD passage of MCU thus obtain the digital quantity of these group data corresponding, realizing the accurate and real-time monitoring of fire equipments power supply! And by arranging a lightning-protection module on the data acquisition circuit of fire fighting equipment power supply monitoring system, fire fighting equipment power supply can being avoided to be damaged when being struck by lightning, adding the stability of this data acquisition circuit.
Accompanying drawing explanation
Fig. 1 is fire fighting equipment power supply monitoring system data acquisition circuit.
Reference numeral: 1, electric current Zoom module; 11, current transformer; 2, lightning-protection module; 21, piezoresister; 22, discharge tube; 3, modular converter; 31, sampling resistor; 32, one pole Transient Suppression Diode; 4, shifting formwork block on waveform; 5, amplifier module; 6, indicating module.
Embodiment
Be described further with reference to accompanying drawing 1 pair of the utility model.
A kind of fire fighting equipment power supply monitoring system data acquisition circuit, comprises electric current Zoom module 1, for receiving extraneous electric current and output current signal after scale smaller, modular converter 3, comprise sampling resistor R1, is converted to voltage signal for received current signal, shifting formwork block 4 on waveform, for receiving and raise the overall waveform of voltage signal, concurrent serving moves waveform, amplifier module 5, for receiving and amplification moving waveform, and sends an amplifier waveform, alternating current enters the primary side of Current Transmit, the amplitude proportion of alternating current is reduced into electric current, through lightning-protection module 2 lightning protection, and the sampling resistor R1 in modular converter 3 converts current signal to voltage signal, on the basis of AC signal, add a DC voltage simultaneously, waveform is made to be in more than 0 level, the inverting input of R2 and amplifier couples, output terminal is connected to inverting input by feedback resistance R3, thus form inverse proportion operational amplification circuit, and export the waveform after amplifier, the waveform of this waveform and current transformer 11 input end is convergent-divergent according to a certain percentage, the waveform that phase place is contrary, thus reach the object of data acquisition.
Described electric current Zoom module 1 is also provided with anti-lightning strike lightning-protection module 2 with modular converter 3, described lightning-protection module 2 comprises an a piezoresister MOV and discharge tube GDT, described piezoresister MOV one end is coupled on electric current Zoom module, discharge tube GDT connects with piezoresister MOV, and discharge tube GDT is away from one end ground connection of piezoresister MOV.Wherein discharge tube can comprise two-stage discharge pipe, and two ends connect MOV and ground respectively.This is arranged through and arranges a lightning-protection module on data acquisition module, fire fighting equipment power supply can being avoided to be damaged when being struck by lightning, adding the stability of this data acquisition circuit.Wherein voltage dependent resistor (VDR) is a kind of votage limit type protection device.Voltage dependent resistor (VDR) has nonlinear characteristic, and when superpotential appears at two interpolars of voltage dependent resistor (VDR), voltage dependent resistor (VDR) by voltage clamping to a relatively-stationary magnitude of voltage, thus can realize the protection to late-class circuit.When this Acquisition Circuit is struck by lightning, huge voltage during this characteristic reduction thunderbolt of voltage dependent resistor (VDR) can be utilized, and by discharge tube GDT, voltage is imported underground, thus protect this data acquisition circuit.Wherein on waveform, shifting formwork block 4 comprises a reference voltage, for supporting ac power waveform moves; Amplifier module 5 comprises the inverse proportion amplifying circuit of LM393A.
Be provided with between described lightning-protection module 2 and modular converter 3 and be used to indicate the indicating module 6 that data acquisition circuit suffers thunderbolt state.Can realize, to warning during this data acquisition circuit thunderbolt state, increasing the safety in utilization of this this data acquisition circuit by this indicating module 6.Alternating current enters the primary side of Current Transmit, the amplitude proportion of alternating current is reduced into electric current, through lightning-protection module 2 lightning protection, and the sampling resistor R1 in modular converter 3 converts current signal to voltage signal, on the basis of AC signal, add a DC voltage simultaneously, waveform is made to be in more than 0 level, the inverting input of R2 and amplifier couples, output terminal is connected to inverting input by feedback resistance R3, thus form inverse proportion operational amplification circuit, and export the waveform after amplifier, the waveform of this waveform and current transformer 11 input end is convergent-divergent according to a certain percentage, the waveform that phase place is contrary, thus reach the object of data acquisition.
Described indicating module 6 comprises switch element, and its controlled end is coupled between lightning-protection module and modular converter, in order to detectable voltage signals, and exports a switching signal; Alarm unit, sends alarm signal for reception control signal.The wherein switch element PNP triode Q that comprises resistance R4 and couple with the other end of R4, the base stage of R4 and triode couples, the grounded emitter of triode Q, collector is coupled with one end of relay K M, the relay K M other end is coupled on power supply, and normally opened contact S and a LED strip of its repeat circuit join.When this data acquisition circuit is struck by lightning, lightning protection circuit conducting, by indicating module short circuit, now PNP triode conducting, and make relay K M conducting, its normally opened contact can be closed during relay K M conducting, thus connect LED, make LED bright, indication circuit is struck by lightning.Can realize, to warning during this data acquisition circuit thunderbolt state, increasing the safety in utilization of this data acquisition circuit by this setting.
Described electric current Zoom module 1 comprises Current Transmit, and the primary side of described Current Transmit connects extraneous electric current, and secondary side is electrically connected with lightning-protection module 2.This setting can say that outside big current scale smaller is the small area analysis that can run in Acquisition Circuit, this Acquisition Circuit can not only be made to detect have the ability of the fire fighting equipment power supply of big current, expand the scope of application of this Acquisition Circuit.Meanwhile, this Current Transmit also when fire fighting equipment is struck by lightning, can change big current into small area analysis in time, increases the stability of this Acquisition Circuit further.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. a fire fighting equipment power supply monitoring system data acquisition circuit, comprises
Electric current Zoom module, for receiving extraneous electric current and output current signal after scale smaller;
Modular converter, comprise sampling resistor R1, is converted to voltage signal for received current signal;
Shifting formwork block on waveform, for receiving and raise the overall waveform of voltage signal, concurrent serving moves waveform;
Amplifier module, for receiving and amplification moving waveform, and sends an amplifier waveform;
It is characterized in that: between described electric current Zoom module and modular converter, be also provided with anti-lightning strike lightning-protection module, described lightning-protection module comprises piezoresister MOV and discharge tube GDT, described piezoresister MOV one end couples between electric current Zoom module and modular converter, one end of described discharge tube GDT is connected with the other end of piezoresister MOV, the other end ground connection of discharge tube GDT.
2. a kind of fire fighting equipment power supply monitoring system data acquisition circuit according to claim 1, is characterized in that: be provided with the indicating module being used to indicate and suffering thunderbolt state between described lightning-protection module and modular converter.
3. a kind of fire fighting equipment power supply monitoring system data acquisition circuit according to claim 2, it is characterized in that: described indicating module comprises switch element, its controlled end is coupled between lightning-protection module and modular converter, in order to detectable voltage signals, and exports a switching signal; Control module, sends control signal for receiving key signal; Alarm unit, sends alarm signal for reception control signal.
4. a kind of fire fighting equipment power supply monitoring system data acquisition circuit according to claim 1, it is characterized in that: described electric current Zoom module comprises Current Transmit, the primary side of described Current Transmit connects extraneous electric current, and secondary side is electrically connected with lightning-protection module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520935820.XU CN205157748U (en) | 2015-11-21 | 2015-11-21 | Fire control device power monitored control system data acquisition circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520935820.XU CN205157748U (en) | 2015-11-21 | 2015-11-21 | Fire control device power monitored control system data acquisition circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205157748U true CN205157748U (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520935820.XU Expired - Fee Related CN205157748U (en) | 2015-11-21 | 2015-11-21 | Fire control device power monitored control system data acquisition circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN205157748U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023340A (en) * | 2018-01-23 | 2018-05-11 | 佛山科学技术学院 | A kind of boundary switch controller |
| CN113820626A (en) * | 2021-10-15 | 2021-12-21 | 云南电力技术有限责任公司 | End screen grounding state detection system and method |
-
2015
- 2015-11-21 CN CN201520935820.XU patent/CN205157748U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023340A (en) * | 2018-01-23 | 2018-05-11 | 佛山科学技术学院 | A kind of boundary switch controller |
| CN113820626A (en) * | 2021-10-15 | 2021-12-21 | 云南电力技术有限责任公司 | End screen grounding state detection system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160413 Termination date: 20201121 |
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| CF01 | Termination of patent right due to non-payment of annual fee |