CN202837191U - Water quality measuring instrument - Google Patents
Water quality measuring instrument Download PDFInfo
- Publication number
- CN202837191U CN202837191U CN 201220402346 CN201220402346U CN202837191U CN 202837191 U CN202837191 U CN 202837191U CN 201220402346 CN201220402346 CN 201220402346 CN 201220402346 U CN201220402346 U CN 201220402346U CN 202837191 U CN202837191 U CN 202837191U
- Authority
- CN
- China
- Prior art keywords
- circuit part
- circuit
- amplifier
- input end
- single chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
An embodiment of the utility model provides a water quality measuring instrument, and relates to the technology of water quality measurement. The water quality measuring instrument guarantees integrity of measured data and reduces cost. The water quality measuring instrument comprises a supply circuit part, wherein one end of the supply circuit part is connected to a system power supply part, the other end of the supply circuit part is connected to one end of a water quality measuring circuit, and the other end of the water quality measuring circuit is connected to the system power supply part. When a system is powered on, a key switch is turned off, resetting of a single chip circuit part is controlled through a rest circuit part and a control circuit part, and the system power supply part is switched on to provide electricity for the single chip circuit part. When the key switch is turned on, external interruption of the single chip circuit part is activated, the reset circuit part and the control circuit part enable the signal chip circuit part and the system power supply part to be disconnected, and the single chip circuit part is controlled to work in a sleep state.
Description
Technical field
The utility model relates to a kind of water quality measurement technology, relates in particular to a kind of water quality analyzer.
Background technology
In order to measure the contamination index at water source, a kind of Portable water quantity tester is provided in the prior art, the staff can take this Portable water quantity tester to test site and carry out water-quality determination.But, in this course of work using this Portable water quantity tester, need to provide the system power supply of 220V for its work.Therefore, need special on-off circuit to come direct shutdown system power supply at this Portable water quantity tester, thereby might when system power supply is closed, cause losing of test data, and this special on-off circuit has increased the cost of Portable water quantity tester.
The utility model content
The utility model embodiment provides a kind of water quality analyzer, with the integrality of assurance test data, and reduces cost.
The utility model embodiment adopts following technical scheme:
A kind of water quality analyzer comprises: the feed circuit part, and an end of described feed circuit part is connected to the system power supply part, and the other end is connected to an end of water-quality determination circuit, and the other end of described water-quality determination circuit is connected to described system power supply part; Wherein:
Described feed circuit partly comprise keyswitch, single chip circuit part, control circuit part and reset circuit part, described keyswitch one end is connected to ground, the other end is connected on the described single chip circuit external interrupt pin partly and the first and second input ends of described control circuit part, an I/O pin of described single chip circuit part is connected to the 3rd input end of described system power supply part and described control circuit part, and the output terminal of described control circuit part is connected to the reset pin of described single chip circuit part; The four-input terminal of described control circuit part is connected to the output terminal of described reset circuit part;
When system powers on, described keyswitch is disconnected, partly control described single chip circuit partial reset by described reset circuit part and described control circuit, and connect system power supply and partly partly power for described single chip circuit;
When described keyswitch is closed, activate the external interrupt of described single chip circuit part, so that described single chip circuit partly partly disconnects with system power supply, control described single chip circuit some work in dormant state by described reset circuit part and described control circuit part.
The water quality analyzer that the utility model embodiment provides when system powers on, is connected system power supply and is partly partly powered for single chip circuit; When keyswitch was closed, the control single chip computer circuit part was operated in dormant state.Therefore, can find out that the single chip circuit part has electricity all the time, thereby guarantee the integrality of test data; And need not special on-off circuit among the utility model embodiment, only need the just work of energy control system power supply of keyswitch, reset circuit part and control circuit part, thereby saved cost.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the utility model embodiment, the accompanying drawing of required use was done a simply introduction during the below will describe embodiment, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the synoptic diagram of the water quality analyzer of the utility model enforcement one;
Fig. 2 is the concrete synoptic diagram of the feed circuit part of water quality analyzer;
Fig. 3 is the concrete synoptic diagram of the tintmeter circuit part of water quality analyzer;
Fig. 4 is the concrete synoptic diagram of the Ph value metering circuit part of water quality analyzer.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, implement the synoptic diagram of one water quality analyzer for the utility model.Wherein, the water quality analyzer of the utility model enforcement one comprises: feed circuit part 11, one end of described feed circuit part 11 is connected to system power supply part 12, the other end is connected to an end of water-quality determination circuit 13, and the other end of described water-quality determination circuit 13 is connected to described system power supply part 12.
Wherein, as shown in Figure 2, be the concrete synoptic diagram of described feed circuit part.Wherein, described feed circuit part 11 comprises keyswitch SW1, single chip circuit part 112, control circuit part 113 and reset circuit part 114.
In conjunction with shown in Figure 2, described keyswitch SW1 one end is connected to ground, the other end is connected to and (is INT1 among the figure) on the external interrupt pin of described single chip circuit part 112 and first and second input ends 8 and 9 of described control circuit part 113, an I/O pin of described single chip circuit part (being P24 among the figure) is received the 3rd input end 6 of described system power supply part 12 and described control circuit part 113, and the output terminal 3 of described control circuit part 113 is connected to the reset pin RESET of described single chip circuit part 112; The four-input terminal 1 of described control circuit part 113 is connected on the output terminal 100 of described reset circuit part.
Can find out that in Fig. 2 described control circuit part 113 comprises the first Sheffer stroke gate U7C, the second Sheffer stroke gate U7B and the 3rd Sheffer stroke gate U7A.Two input ends of wherein said the first Sheffer stroke gate U7C are respectively first input end 8 and second input end 9 of described control circuit part 113, the output terminal 10 of described the first Sheffer stroke gate U7C is connected to the input end 5 of described the second Sheffer stroke gate U7B, and another input end of described the second Sheffer stroke gate U7B is described the 3rd input end 6 of described control circuit part 113; The output terminal of described the second Sheffer stroke gate U7B is connected to the input end 2 of described the 3rd Sheffer stroke gate U7A, and another input end of described the 3rd Sheffer stroke gate U7A is described four-input terminal 1; The output terminal 3 of described the 3rd Sheffer stroke gate U7A is connected to the reset pin RESET of described single chip circuit part.
In foregoing circuit, when system powers on, described keyswitch is disconnected, partly control described single chip circuit partial reset by described reset circuit part and described control circuit, and connect system power supply and partly partly power for described single chip circuit.
Concrete, the output 100 of reset circuit part was low level when system powered on, so that the input end 1 of U7A is low level, the output 3 of U7A is high level, thereby so that the reset pin RESET of single chip circuit part is high level, the single chip circuit partial reset.Thereby triggering the internal processes control P24 pin that starts the control single chip computer circuit part is low level, the VT1 conducting of feed circuit part, and for described single chip circuit is partly powered, at this moment, the input end 6 of U7B is low level.At this moment, the input end 8,9 of U7C is high level, and the output terminal 10 of U7C is low level, and therefore, the output terminal 4 of U7B is low level, and the output terminal 3 of U7A is low level, and RESET is low level, thereby single chip circuit partly works.
When described keyswitch is closed, activate the external interrupt of described single chip circuit part, so that described single chip circuit partly partly disconnects with system power supply, control described single chip circuit some work in dormant state by described reset circuit part and described control circuit part.
Concrete, when described keyswitch is closed, triggering the internal processes control P24 pin that starts the control single chip computer circuit part is high level, the VT1 cut-off, stop partly to power for described single chip circuit, so the input end 6 of U7B is high level that the input end 5 of U7B is in low level, therefore, 4 of U7B is high level.At this moment, the input end 1 of U7A is high level, and input end 2 is high level, and output terminal 3 is low level, and RESET is low level, so that described single chip circuit partly is in dormant state, system power dissipation reduces level, and the power consumption of system is in the milliampere rank at this moment.And keyswitch is closed, and the input end 8,9 of U7C is low level, and the output terminal 10 of U7C is high level, and the input end 5 of U7B is high level, and the output terminal 4 of U7B is low level.At this moment, the input end 2 of U7A is low level, and output terminal 3 is high level, thereby RESET is high level, and the single chip circuit partial reset is connected system power supply and partly partly powered for described single chip circuit, begins again normal operation.
As seen from the above, the water quality analyzer of the utility model embodiment one when system powers on, is connected system power supply and is partly partly powered for single chip circuit; When keyswitch was closed, the control single chip computer circuit part was operated in dormant state.Therefore, can find out that the single chip circuit part has electricity all the time, thereby guarantee the integrality of test data; And need not special on-off circuit among the utility model embodiment, only need the just work of energy control system power supply of keyswitch, reset circuit part and control circuit part, thereby saved cost.
Water-quality determination circuit 13 described water-quality determinations among Fig. 1 partly comprise tintmeter circuit part 131 and Ph value metering circuit part 132.
As shown in Figure 3, be the concrete synoptic diagram of tintmeter circuit part among the utility model embodiment.Wherein, described tintmeter circuit part comprises: the first amplifier U1B, the second amplifier U1A, temperature-compensation circuit 1311, semiconductor light-emitting source 1312 and additional control circuit 1313.
Wherein, the first and second input ends 5 and 6 of described the first amplifier U1B are connected respectively to first and second output terminals 101 and 102 of described semiconductor light-emitting source 1312, and the output terminal 7 of described the first amplifier is connected to the first input end 3 of described the second amplifier U1A; The second input end 2 of described the second amplifier is connected to the output terminal 2 of temperature-compensation circuit 1311; Third and fourth output terminal 103 and 104 of described semiconductor light-emitting source is connected respectively to first and second input ends 81 and 91 of described additional control circuit.
In this example, be simplified structure, described semiconductor light-emitting source adopts single wavelength semiconductor light source.But the luminous intensity of semiconductor light sources is relevant with temperature, with the rising of temperature, the luminescence efficiency of semiconductor light sources reduces, and luminous intensity reduces, thereby causes the water quality analyzer drift, therefore be head it off, described temperature-compensation circuit comprises negative tempperature coefficient thermistor 13.
In Fig. 3, the enlargement factor of U1A is A=1+R4/ (R5+R13).Because described semiconductor light-emitting source is along with the increase of temperature, its output current reduces, and R13 also reduces along with its resistance of increase of temperature, therefore suitably selects the resistance of R4, R5, R6, R10, R13 can offset because the drift of the tintmeter circuit part output that temperature variation causes.
As shown in Figure 4, be the concrete synoptic diagram partly of Ph value metering circuit among the utility model embodiment.Ph value metering circuit part 132 comprises: Ph electrode 200, unipolarity amplifier circuit 201 and mu balanced circuit 202.
Wherein, the negative pole of described Ph electrode 200 is connected to described mu balanced circuit, the positive pole of described Ph electrode 200 is connected to the first input end 5 of described unipolarity amplifier circuit 201, and the second input end 6 of described unipolarity amplifier circuit 201 is connected to described system power supply part.By mu balanced circuit, so that the negative pole of Ph electrode 200 is the positive voltage about 1V, therefore, and in measuring process, can be so that the output of described Ph electrode remains on positive voltage.
Again as shown in Figure 4, described unipolarity amplifier circuit comprises the 3rd amplifier U8B and the 4th amplifier U8A.Wherein, the first input end 5 that the input end of described the 3rd amplifier U8B is described unipolarity amplifier circuit, the output terminal 7 of described the 3rd amplifier is connected to the first input end 3 of described the 4th amplifier U8A, the second input end 8 of described the 4th amplifier U8A is the second input end of described unipolarity amplifier circuit, is connected to described system power supply part.
Change 10 times because the output of the Ph of the glass electrode that partly adopts in Ph value metering circuit probe is hydrogen ion activity, the exporting change pact ± 59mV of electrode is so the amplifying circuit of Ph value electrode will adopt bipolarity to power, to adapt to the change in polarity of current potential.For this reason, present embodiment has adopted the method that improves Ph electrode negative pole current potential, make the output of electrode in its gamut scope, all remain on positive voltage output, thereby the amplifying circuit that adopts unipolarity to power can be finished amplification and the adjustment work of the output voltage of Ph value probe.This can simplify power circuit greatly, reduces the quantity of the battery of needs, simplifies apparatus structure.
In addition, the utility model embodiment two also provides a kind of control method of above-mentioned water quality analyzer, comprising:
When system powered on, keyswitch disconnected, and resetted by reset circuit part and control circuit part control single chip computer circuit part, connected system power supply and partly partly powered for described single chip circuit;
When described keyswitch is closed, activate the external interrupt of described single chip circuit part, so that described single chip circuit partly partly disconnects with system power supply, control described single chip circuit some work in dormant state by described reset circuit part and described control circuit part.
In addition, in described method, also can utilize described temperature-compensation circuit to eliminate the output shift of described tintmeter circuit part, and remain on positive voltage by the output that described unipolarity amplifier circuit and described mu balanced circuit are controlled described Ph electrode.
Therefore, can find out because the single chip circuit part has electricity all the time, thereby guarantee the integrality of test data; And need not special on-off circuit among the utility model embodiment, only need the just work of energy control system power supply of keyswitch, reset circuit part and control circuit part, thereby saved cost.Simultaneously, can greatly simplify power circuit again, reduce the quantity of the battery of needs, simplify apparatus structure.
The above; it only is embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (5)
1. water quality analyzer, it is characterized in that, comprising: the feed circuit part, an end of described feed circuit part is connected to the system power supply part, the other end is connected to an end of water-quality determination circuit, and the other end of described water-quality determination circuit is connected to described system power supply part; Wherein:
Described feed circuit partly comprise keyswitch, single chip circuit part, control circuit part and reset circuit part, described keyswitch one end is connected to ground, the other end is connected to an external interrupt pin of described single chip circuit part and the first and second input ends of described control circuit part, an I/O pin of described single chip circuit part is connected to the 3rd input end of described system power supply part and described control circuit part, and the output terminal of described control circuit part is connected to the reset pin of described single chip circuit part; The four-input terminal of described control circuit part is connected to the output terminal of described reset circuit part;
When system powers on, described keyswitch is disconnected, partly control described single chip circuit partial reset by described reset circuit part and described control circuit, and connect system power supply and partly partly power for described single chip circuit;
When described keyswitch is closed, activate the external interrupt of described single chip circuit part, so that described single chip circuit partly partly disconnects with system power supply, control described single chip circuit some work in dormant state by described reset circuit part and described control circuit part.
2. water quality analyzer according to claim 1 is characterized in that, described control circuit partly comprises the first Sheffer stroke gate, the second Sheffer stroke gate and the 3rd Sheffer stroke gate;
Two input ends of wherein said the first Sheffer stroke gate are respectively described first input end and the second input end, the output terminal of described the first Sheffer stroke gate is connected to an input end of described the second Sheffer stroke gate, and another input end of described the second Sheffer stroke gate is described the 3rd input end; The output terminal of described the second Sheffer stroke gate is connected to an input end of described the 3rd Sheffer stroke gate, and another input end of described the 3rd Sheffer stroke gate is described four-input terminal; The output terminal of described the 3rd Sheffer stroke gate is connected to the reset pin of described single chip circuit part.
3. arbitrary described water quality analyzer is characterized in that according to claim 1-2, and described water-quality determination partly comprises this look meter circuit part and Ph value metering circuit part; Wherein,
Described this look meter circuit part comprises: the first amplifier, the second amplifier, temperature-compensation circuit, semiconductor light-emitting source and additional control circuit;
Wherein, the first and second input ends of described the first amplifier are connected respectively to the first and second output terminals of described semiconductor light-emitting source, and the output terminal of described the first amplifier is connected to the first input end of described the second amplifier; The second input end of described the second amplifier is connected to the output terminal of temperature-compensation circuit; The third and fourth output terminal of described semiconductor light-emitting source is connected respectively to the first and second input ends of described additional control circuit;
Described Ph value metering circuit partly comprises: Ph electrode, unipolarity amplifier circuit and mu balanced circuit;
Wherein, the negative pole of described Ph electrode is connected to described mu balanced circuit, the positive pole of described Ph electrode is connected to the first input end of described unipolarity amplifier circuit, the second input end of described unipolarity amplifier circuit is connected to described system power supply part, so that the output of described Ph electrode remains on positive voltage.
4. water quality analyzer according to claim 3 is characterized in that, described temperature-compensation circuit comprises negative tempperature coefficient thermistor.
5. water quality analyzer according to claim 3 is characterized in that, described unipolarity amplifier circuit comprises the 3rd amplifier and the 4th amplifier; Wherein, a first input end that input end is described unipolarity amplifier circuit of described the 3rd amplifier, the output terminal of described the 3rd amplifier is connected to the first input end of described the 4th amplifier, and the second input end of described the 4th amplifier is the second input end of described unipolarity amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220402346 CN202837191U (en) | 2012-08-15 | 2012-08-15 | Water quality measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220402346 CN202837191U (en) | 2012-08-15 | 2012-08-15 | Water quality measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202837191U true CN202837191U (en) | 2013-03-27 |
Family
ID=47948871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220402346 Expired - Lifetime CN202837191U (en) | 2012-08-15 | 2012-08-15 | Water quality measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202837191U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592293A (en) * | 2012-08-15 | 2014-02-19 | 郭永平 | Water quality tester and control method thereof |
| CN105067669A (en) * | 2015-06-30 | 2015-11-18 | 佛山市云米电器科技有限公司 | Detection circuit, detection apparatus and detection method |
-
2012
- 2012-08-15 CN CN 201220402346 patent/CN202837191U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592293A (en) * | 2012-08-15 | 2014-02-19 | 郭永平 | Water quality tester and control method thereof |
| CN103592293B (en) * | 2012-08-15 | 2016-03-30 | 郭永平 | The control method of water quality analyzer and water quality analyzer |
| CN105067669A (en) * | 2015-06-30 | 2015-11-18 | 佛山市云米电器科技有限公司 | Detection circuit, detection apparatus and detection method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207502008U (en) | A kind of NB-IOT wireless gas meters | |
| CN105911953A (en) | Novel control system for intelligent home | |
| CN202837191U (en) | Water quality measuring instrument | |
| CN201387449Y (en) | Automatic backlight circuit for electronic electric watt-hour meter | |
| CN103592293B (en) | The control method of water quality analyzer and water quality analyzer | |
| CN201937563U (en) | Standby low-power consumption power supply switch suitable for single chip microcomputer controller | |
| CN201570897U (en) | Two-supply switching circuit for electronic-type electric energy meter | |
| CN201546996U (en) | Control circuit of intelligent fan | |
| CN203674759U (en) | Double-color LED indicating circuit for lithium battery charger | |
| CN203825217U (en) | Micro-power consumption tipping bucket type rainfall pulse signal acquisition device | |
| CN203193257U (en) | Storage battery charging protective device | |
| CN102749507B (en) | Light source power detection device | |
| CN204302733U (en) | A kind of ON-OFF control circuit based on touch controlled key | |
| CN103091634A (en) | Battery level indicating circuit and indicating device and lamp | |
| CN202818730U (en) | Multifunctional working lamp | |
| CN203350340U (en) | Full-range low power consumption DC voltage detecting circuit | |
| CN202720516U (en) | Remote control outlet detector of circuit breaker | |
| CN201837713U (en) | Testing machine for short circuit of battery | |
| CN207123743U (en) | Pig house environment low power-consumption intelligent monitoring device | |
| CN109217459A (en) | A kind of switching circuit of multiple power supplies input | |
| CN204968177U (en) | Protection circuit based on diode temperature test | |
| CN203812024U (en) | Microamp-level standby-current electronic switch for battery power supply | |
| CN213240846U (en) | Device for intelligent astronomical controller | |
| CN214400730U (en) | Circuit constant load device with GPS intelligent switch device | |
| CN203617764U (en) | Charging circuit with cell polarity reversal connection protection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210616 Address after: 101200 1st floor, area a, building 21, courtyard 39, Pinghe street, Xinggu District, Pinggu District, Zhongguancun Science and Technology Park, Pinggu District, Beijing Patentee after: Beijing Shuanghui Jingcheng Electronic Product Co.,Ltd. Address before: 067000 room 314, unit 7, building 13, banbishan, Shuangqiao District, Chengde City, Hebei Province Patentee before: Guo Yongping Patentee before: Song Yanxiang |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |