CN109917278A - A kind of forceful electric power logic detection system and method - Google Patents
A kind of forceful electric power logic detection system and method Download PDFInfo
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- CN109917278A CN109917278A CN201910251466.1A CN201910251466A CN109917278A CN 109917278 A CN109917278 A CN 109917278A CN 201910251466 A CN201910251466 A CN 201910251466A CN 109917278 A CN109917278 A CN 109917278A
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Abstract
The present invention provides a kind of forceful electric power logic detection system and method, the forceful electric power logic detection system includes: forceful electric power power supply (1), for providing forceful electric power voltage；Photoelectric coupled circuit (2) is connect, for exporting low level signal and high level signal with the forceful electric power power supply (1)；Single-chip microcontroller (3) is connect with the photoelectric coupled circuit (2), for detecting the low level signal and high level signal of the photoelectric coupled circuit (2) output, judges that measurand is in first state or the second state according to testing result.The present invention can simplify hardware circuit, it is possible thereby to reduce controller cost.
Description
Technical field
The present invention relates to logic detection technical fields, in particular to a kind of forceful electric power logic detection system and method.
Background technique
Existing logic detection mode generally uses weak electricity measuring, for example, generalling use weak for the logic detection of CUSTOM HOUSE HOTEL
The mode of electro-detection is realized, as shown in Figure 1, being needed by the way of weak electricity measuring by rectification circuit, filter circuit, decompression electricity
Road etc., the cost is relatively high.
Summary of the invention
Present invention solves the technical problem that being that existing logic detection mode is at high cost.
In order to solve the above technical problems, the technical solution adopted in the present invention is as follows:
According to an aspect of the invention, there is provided a kind of forceful electric power logic detection system, comprising:
Forceful electric power power supply, for providing forceful electric power voltage；
Photoelectric coupled circuit is connect, for exporting low level signal and high level signal with forceful electric power power supply；
Single-chip microcontroller is connect with photoelectric coupled circuit, for detecting the low level signal and high level signal of optocoupler circuit output, root
Judge that measurand is in first state or the second state according to testing result.
By above structure, the present invention is not necessarily to forceful electric power power supply being converted to light current, enormously simplifies hardware circuit, thus may be used
To reduce controller cost.
In certain embodiments of the present invention,
Photoelectric coupled circuit includes photoelectrical coupler, divider resistance and pull-up resistor；Wherein, the first input end of photoelectrical coupler
Series connection divider resistance, and be connected with firewire, the second input terminal is connected by the switch of measurand with zero curve；Photoelectrical coupler
First output end is connected with ground wire, and second output terminal is connect with pull-up resistor；
Single-chip microcontroller is placed at pull-up resistor.
In certain embodiments of the present invention,
Photoelectric coupled circuit further includes current-limiting resistance, and current-limiting resistance is connected with pull-up resistor, is used for current limliting.
In certain embodiments of the present invention,
Photoelectric coupled circuit includes photoelectrical coupler, divider resistance and pull down resistor；Wherein, the first input end of photoelectrical coupler
Series connection divider resistance, and be connected with firewire, the second input terminal is connected by the switch of measurand with zero curve；Photoelectrical coupler
First output end is connected by pull down resistor with ground wire；
Single-chip microcontroller is placed at pull down resistor.
In certain embodiments of the present invention,
Photoelectric coupled circuit further includes capacitor, and one end of capacitor is connected with the detection port of single-chip microcontroller, and the other end is connected with ground wire,
For filtering out the exchange clutter in signal.
In certain embodiments of the present invention,
Measurand is CUSTOM HOUSE HOTEL, and first state is closed state, and the second state is off-state.
According to another aspect of the present invention, a kind of detection method of above-mentioned forceful electric power logic detection system is additionally provided, is wrapped
It includes:
Single-chip microcontroller detect photoelectric coupled circuit output signal, when detect come into existence low level signal when, single-chip microcontroller open
Timer starts timing, stops timing when detecting high level signal, and timer added up to be more than or equal to setting within the period 1
When duration, then judge that measurand is in first state.
In certain embodiments of the present invention, further includes:
When single-chip microcontroller detects the presence of high level signal, single-chip microcontroller opens counter, at interval of a period of time detection one
Secondary, when detecting high level signal, then counter adds one, the value of counter is read at the end of second round, when counter
When value is more than or equal to setting numerical value, then judge that measurand is in the second state.
According to another aspect of the present invention, a kind of detection method of above-mentioned forceful electric power logic detection system is additionally provided, is wrapped
It includes:
Single-chip microcontroller detect photoelectric coupled circuit output signal, when detect come into existence high level signal when, single-chip microcontroller open
Timer starts timing, stops timing when detecting low level signal, and timer added up to be more than or equal to setting within the period 1
When duration, then judge that measurand is in first state.
In certain embodiments of the present invention,
When single-chip microcontroller detects the presence of low level signal, single-chip microcontroller opens counter, at interval of a period of time detection one
Secondary, when detecting low level signal, then counter adds one, the value of counter is read at the end of second round, when counter
When value is more than or equal to setting numerical value, then judge that measurand is in the second state.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the light current logic detection system of CUSTOM HOUSE HOTEL in the prior art；
Fig. 2 is the structural schematic diagram of the forceful electric power logic detection system of CUSTOM HOUSE HOTEL of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the photoelectric coupled circuit of Fig. 2；
Fig. 4 is another structural schematic diagram of the photoelectric coupled circuit of Fig. 2；
Fig. 5 is the flow diagram of the forceful electric power logic detection method of CUSTOM HOUSE HOTEL of the embodiment of the present invention.
Description of symbols:
1- forceful electric power power supply；
2- photoelectric coupled circuit；
21- photoelectrical coupler；
A, K- input terminal；
C, E- output end；
R1- divider resistance；
R2- pull-up resistor；
R3- pull down resistor；
C1- capacitor；
3- single-chip microcontroller.
Specific embodiment
For the logic detection of CUSTOM HOUSE HOTEL, usually realized by the way of weak electricity measuring in the prior art, as shown in Figure 1,
Forceful electric power power supply successively after reduction voltage circuit, rectification circuit, filter circuit and voltage regulator circuit, is converted to light current power supply, using
CUSTOM HOUSE HOTEL detection circuit and single-chip microcontroller.From the above, it can be seen that hardware circuit is comparatively laborious when by the way of weak electricity measuring, cost
It is relatively high.In order to reduce the logic detection cost of CUSTOM HOUSE HOTEL, the present invention, which designs, a kind of realizes CUSTOM HOUSE HOTEL in such a way that forceful electric power detects
Logic control.
It should be noted that in the present invention, the forceful electric power power supply being previously mentioned refers to that 220V (exchange) alternating current, light current power supply are
Refer to 5V (direct current) power supply.
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
In embodiments of the present invention, a kind of forceful electric power logic detection system is provided, as shown in Fig. 2, forceful electric power logic of the present invention
Detection system includes forceful electric power power supply 1, photoelectric coupled circuit 2 and single-chip microcontroller 3.Forceful electric power power supply 1 is for providing forceful electric power voltage；Photoelectric coupled circuit 2
It is connect with forceful electric power power supply 1, for exporting low level signal and high level signal；Single-chip microcontroller 3 is connect with photoelectric coupled circuit 2, for examining
Survey the output signal of photoelectric coupled circuit 2.
The measurand for needing to carry out logic detection has switch, can judge quilt by closing or opening for judgement switch
It surveys object and is in the first state or second of state, the switch of measurand accesses in photoelectric coupled circuit 2,3 basis of single-chip microcontroller
The output signal of photoelectric coupled circuit 2 judges whether switch turns on or off.Specifically, when switch is opened, photoelectric coupled circuit 2 is not connect
Logical, photoelectric coupled circuit 2 can continue output high level signal or low level signal；When switch is closed, since forceful electric power power supply 1 is alternating current
Source, photoelectric coupled circuit 2 constantly alternately export low level signal and high level signal.Therefore, the present invention is right respectively by single-chip microcontroller 3
Low level signal and high level signal are detected, and judge that measurand is in first state or the second shape according to testing result
State, for example, can judge that CUSTOM HOUSE HOTEL is in closed state and is in disconnection shape according to testing result when measurand is CUSTOM HOUSE HOTEL
State.
By above structure, the hardware circuit of logic detection can be greatly simplified, reduces controller cost.
As shown in figure 3, photoelectric coupled circuit 2 includes photoelectrical coupler 21, divider resistance R1 and pull-up resistor R2.
In embodiments of the present invention, forceful electric power power supply 1 uses 220V alternating current, and photoelectrical coupler 21 uses model TLP185B
Photoelectrical coupler, divider resistance R1 uses the Europe 220k glass glaze divider resistance, and the specific connection type of photoelectric coupled circuit 2 is as follows:
In the input terminal A series connection Europe the 220k glass glaze divider resistance R1 of photoelectrical coupler 21, and it is connected with firewire, photoelectrical coupler 21
Input terminal K is connected by the switch of measurand with zero curve；The output end E of photoelectrical coupler 21 is connected with ground wire, photoelectric coupling
The output end C connection pull-up resistor R2 of device 21, single-chip microprocessor MCU 3 are placed at pull-up resistor R2, i.e., the detection port of single-chip microcontroller 3 connects
It is connected between pull-up resistor R2 and the output end C of photoelectrical coupler 21.
In photoelectric coupled circuit 2, when the switch of measurand is closed, since alternating current is sine wave alternating current, line voltage
In sine wave top half, be connected photoelectrical coupler 21, single-chip microcontroller 3 detect port by the output end C of photoelectrical coupler 21,
E is connected to the ground, therefore detects low level signal, and at sine wave lower half portion, photoelectrical coupler 21 ends line voltage, monolithic
The detection of machine 3 port passes through pull-up resistor R2 at this time and is connected with 5V power supply, therefore detects high level signal.Therefore, pull-up resistor R2
Definition be the resistance being connected directly with power supply, therefore named pull-up resistor plays the role of partial pressure.When the switch of measurand is opened
When, photoelectrical coupler 21 can not be connected, the detection of single-chip microcontroller 3 port passes through pull-up resistor R2 at this time and is connected with 5V power supply, therefore detects
To high level signal.
Photoelectric coupled circuit 2 can also include current-limiting resistance (not shown), and current-limiting resistance is connected with pull-up resistor R2, played
Metering function.
Photoelectric coupled circuit 2 further includes capacitor C1, and one end of capacitor C1 is connected with the detection port of single-chip microcontroller 3, the other end and ground
Line is connected, and for filtering out the exchange clutter in signal, improves the reliability that single-chip microcontroller 3 detects.
In embodiments of the present invention, the pull-up resistor R2 of the output end connection of photoelectrical coupler 21 is readily modified as pull down resistor
R3, single-chip microprocessor MCU 3 are placed at pull down resistor R3, and specific connection type is as shown in figure 4, area with connection type shown in Fig. 3
It is not:
One end of pull down resistor R3 is connected with the output end E of photoelectrical coupler 21, and the other end is connected with ground wire, single-chip microcontroller 3
Detection port synchronize and be changed to be connected between pull down resistor R3 and the output end E of photoelectrical coupler 21, detect logical AND Fig. 3
Shown in be placed in it is similar at pull-up resistor R2, when measurand switch close when, line voltage is in top half, single-chip microcontroller
3 detect high level signal, and for line voltage at lower half portion, single-chip microcontroller 3 detects low level signal.When opening for measurand
When closing opening, photoelectrical coupler 21 can not be connected, the detection of single-chip microcontroller 3 port passes through pull down resistor R3 at this time and is connected with ground wire, therefore
Detect low level signal.
It should be noted that the switch of measurand is connected on zero curve in Fig. 3,4, and certainly, the switch of measurand
It can also be connected on firewire, the testing result of single-chip microcontroller 3 is identical.
In embodiments of the present invention, a kind of forceful electric power logic detection method is additionally provided, comprising the following steps:
Single-chip microcontroller 3 detects the output signal of photoelectric coupled circuit 2, when detecting that single-chip microcontroller 3 is opened when coming into existence low level signal
It opens timer and starts timing, in timing course, stop timing when detecting high level signal, i.e. photoelectric coupled circuit 2 exports high level
The period of signal is not counted in timer, when timer adds up meter completely setting duration S within the period 1, then judges tested pair
It is synchronous to remove timer by measurand mark position 1 as being in first state.For example, measurand is CUSTOM HOUSE HOTEL, the first shape
State is CUSTOM HOUSE HOTEL closed state.
When single-chip microcontroller 3 detects the presence of high level signal, single-chip microcontroller 3 opens counter, detects at interval of a period of time
Once, when detecting high level signal, then counter adds one, and the value of counter is read at the end of second round, works as counter
Value be more than or equal to setting numerical value a when, then judge that measurand is in the second state, measurand mark position removed, together
Step removes counter.For example, measurand is CUSTOM HOUSE HOTEL, the second state is CUSTOM HOUSE HOTEL off-state.
Above-mentioned forceful electric power logic detection step is to detect position for single-chip microcontroller 3 as shown in Figure 3 to be placed at pull-up resistor R2
Situation, position is detected for single-chip microcontroller 3 as shown in Figure 4 and is placed at pull down resistor R3, then is changed to above-mentioned detection logic
Measurand detects high level signal when being in first state, measurand detects low level signal when being in the second state, tool
Body includes:
Single-chip microcontroller 3 detects the output signal of photoelectric coupled circuit 2, when detecting that single-chip microcontroller 3 is opened when coming into existence high level signal
It opens timer and starts timing, in timing course, stop timing when detecting low level signal, i.e. photoelectric coupled circuit 2 exports low level
The period of signal is not counted in timer, when timer adds up meter completely setting duration S within the period 1, then judges tested pair
It is synchronous to remove timer by measurand mark position 1 as being in first state.For example, measurand is CUSTOM HOUSE HOTEL, the first shape
State is CUSTOM HOUSE HOTEL closed state.
When single-chip microcontroller 3 detects the presence of low level signal, single-chip microcontroller 3 opens counter, detects at interval of a period of time
Once, when detecting low level signal, then counter adds one, and the value of counter is read at the end of second round, works as counter
Value be more than or equal to setting numerical value a when, then judge that measurand is in the second state, measurand mark position removed, together
Step removes counter.For example, measurand is CUSTOM HOUSE HOTEL, the second state is CUSTOM HOUSE HOTEL off-state.
In embodiments of the present invention, additionally provide a kind of CUSTOM HOUSE HOTEL, CUSTOM HOUSE HOTEL be using above-mentioned forceful electric power logic detection method into
Row judges the closed state and off-state of CUSTOM HOUSE HOTEL.
By above-mentioned forceful electric power logic detection mode, it can simplify hardware circuit, thus reduce controller cost.
In order to keep forceful electric power logic control mode of the invention clearer, below by taking the logic control of CUSTOM HOUSE HOTEL as an example, carry out
Further explanation explanation.
As shown in figure 5, single-chip microcontroller detection position is placed at pull-up resistor R2.
Single-chip microcontroller 3 detects the output signal of photoelectric coupled circuit 2, when detecting that single-chip microcontroller 3 is opened when coming into existence low level signal
It opens timer and starts timing, in timing course, stop timing when detecting high level signal, i.e. photoelectric coupled circuit 2 exports high level
The period of signal is not counted in timer, when timer adds up to count full 200ms in 500ms, then judges CUSTOM HOUSE HOTEL for closed form
State, it is synchronous to remove timer by CUSTOM HOUSE HOTEL mark position 1.
When single-chip microcontroller 3 detects the presence of high level signal, single-chip microcontroller 3 opens counter, and every 10ms detection is primary, detection
When to high level signal, then counter adds one, and the value of counter is read in 2s, when the value of counter is more than or equal to 150, then
Judge that for off-state, CUSTOM HOUSE HOTEL mark position is removed for CUSTOM HOUSE HOTEL, it is synchronous to remove counter.
So far, it has been combined attached drawing the present embodiment is described in detail, according to above description, those skilled in the art
There should be clear understanding to a kind of forceful electric power logic detection system and method for the present invention.
It should be noted that unless specifically described or the step of must sequentially occur, there is no restriction for the sequence of above-mentioned steps
In listed above, and it can change or rearrange according to required design.It in the claims, should not will be between parentheses
Any reference symbol is configured to limitations on claims.Word "comprising" does not exclude the presence of element not listed in the claims
Or step.Word "a" or "an" located in front of the element does not exclude the presence of multiple such elements.
Furthermore the word of ordinal number such as " first ", " second ", " third " etc. used in specification and claim,
To modify corresponding element, itself simultaneously unexpectedly contains and represents the element and have any ordinal number, does not also represent a certain element and another
The sequence or the sequence in manufacturing method of one element, the use of those ordinal numbers are only used to obtain the element with certain name
Clear differentiation can be made with another element with identical name.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (10)
1. a kind of forceful electric power logic detection system characterized by comprising
Forceful electric power power supply (1), for providing forceful electric power voltage；
Photoelectric coupled circuit (2) is connect, for exporting low level signal and high level signal with the forceful electric power power supply (1)；
Single-chip microcontroller (3) is connect with the photoelectric coupled circuit (2), for detect the photoelectric coupled circuit (2) output low level signal and
High level signal judges that measurand is in first state or the second state according to testing result.
2. forceful electric power logic detection system according to claim 1, which is characterized in that
The photoelectric coupled circuit (2) includes photoelectrical coupler (21), divider resistance (R1) and pull-up resistor (R2)；Wherein, the light
First input end (A) the series connection divider resistance (R1) of electric coupler (21), and be connected with firewire, the second input terminal (K) is logical
The switch for crossing measurand is connected with zero curve；The first output end (E) of the photoelectrical coupler (21) is connected with ground wire, and second is defeated
Outlet (C) is connect with the pull-up resistor (R2)；
The single-chip microcontroller (3) is placed at the pull-up resistor (R2).
3. forceful electric power logic detection system according to claim 2, which is characterized in that
The photoelectric coupled circuit (2) further includes current-limiting resistance, and the current-limiting resistance is connected with the pull-up resistor (R2), for limiting
Stream.
4. forceful electric power logic detection system according to claim 1, which is characterized in that
The photoelectric coupled circuit (2) includes photoelectrical coupler (21), divider resistance (R1) and pull down resistor (R3)；Wherein, the light
First input end (A) the series connection divider resistance (R1) of electric coupler (21), and be connected with firewire, the second input terminal (K) is logical
The switch for crossing measurand is connected with zero curve；The first output end (E) of the photoelectrical coupler (21) passes through the pull down resistor
(R3) it is connected with ground wire；
The single-chip microcontroller (3) is placed at the pull down resistor (R3).
5. forceful electric power logic detection system according to claim 2 or 4, which is characterized in that
The photoelectric coupled circuit (2) further includes capacitor (C1), one end of the capacitor (C1) and the detection port of the single-chip microcontroller (3)
It is connected, the other end is connected with ground wire, for filtering out the exchange clutter in signal.
6. forceful electric power logic detection system according to claim 1-4, which is characterized in that
The measurand is CUSTOM HOUSE HOTEL, and the first state is closed state, and second state is off-state.
7. a kind of detection method of the described in any item forceful electric power logic detection systems of claim 1-3 characterized by comprising
The single-chip microcontroller (3) detects the output signal of the photoelectric coupled circuit (2), when detect come into existence low level signal when,
Single-chip microcontroller (3) the opening timing device starts timing, stops timing when detecting high level signal, the timer was at first week
When adding up to be more than or equal to setting duration in the phase, then judge that measurand is in first state.
8. detection method according to claim 7, which is characterized in that further include:
When the single-chip microcontroller (3) detects the presence of high level signal, the single-chip microcontroller (3) opens counter, at interval of one section
Time detection is primary, and when detecting high level signal, then counter adds one, and the value of counter is read at the end of second round,
When the value of counter is more than or equal to setting numerical value, then judge that measurand is in the second state.
9. a kind of detection method of forceful electric power logic detection system as claimed in claim 4 characterized by comprising
The single-chip microcontroller (3) detects the output signal of the photoelectric coupled circuit (2), when detect come into existence high level signal when,
Single-chip microcontroller (3) the opening timing device starts timing, stops timing when detecting low level signal, the timer was at first week
When adding up to be more than or equal to setting duration in the phase, then judge that measurand is in first state.
10. detection method according to claim 9, which is characterized in that
When the single-chip microcontroller (3) detects the presence of low level signal, the single-chip microcontroller (3) opens counter, at interval of one section
Time detection is primary, and when detecting low level signal, then counter adds one, and the value of counter is read at the end of second round,
When the value of counter is more than or equal to setting numerical value, then judge that measurand is in the second state.
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| CN111929504A (en) * | 2020-09-28 | 2020-11-13 | 上海南麟电子股份有限公司 | Alternating current resistance detection circuit and system |
| CN112881834A (en) * | 2021-01-18 | 2021-06-01 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Electrical equipment online state detection method and device |
| CN112881834B (en) * | 2021-01-18 | 2022-07-29 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Electrical equipment online state detection method and device |
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Application publication date: 20190621 |