CN207556657U - A kind of electronic balance - Google Patents
A kind of electronic balance Download PDFInfo
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- CN207556657U CN207556657U CN201721601883.7U CN201721601883U CN207556657U CN 207556657 U CN207556657 U CN 207556657U CN 201721601883 U CN201721601883 U CN 201721601883U CN 207556657 U CN207556657 U CN 207556657U
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- signal
- humidity
- electronic balance
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- comparison
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Abstract
The utility model discloses a kind of electronic balances, it is related to a kind of measuring instrument, the ambient humidity residing for electronic balance can not accurately be judged in first time by solving staff, the problem of display screen of electronic balance is caused to will appear colour cast situation, its key points of the technical solution are that：The one side that pedestal is provided with display screen is provided with indicator light, it offers that the mounting groove of humidity detector for detecting humidity and being converted to Humidity Detection signal is installed, and one side of the mounting box far from installation groove bottom offers several through-holes, it is additionally provided with and is coupled to humidity detector to receive Humidity Detection signal and export the comparison means of comparison signal, the standard apparatus of reference signal is provided to comparison means, it is coupled to the starter that comparison means receives comparison signal and instruction is realized in response to comparison signal start indicator lamp, a kind of electronic balance of the utility model, humidity is when higher than preset value, prompting staff takes appropriate measures at the first time.
Description
Technical field
The utility model is related to a kind of measuring instrument, more particularly to a kind of electronic balance.
Background technology
Electronic balance is a kind of measuring instrument for weighing mass of object.Electronic balance is generally sensed using strain-type
Device, capacitance type sensor, electromagnetic balance formula sensor, simple in structure, low cost.
As shown in Figure 1, the display screen 2 for reading number is provided on the pedestal 1 of electronic balance, when electronic balance is in
During the environment of certain humidity, wet air is contacted with display screen 2, gradually display screen 2 can be caused colour cast occur, influences electronics day
Flat 2 normal use, and staff can not accurately judge ambient humidity in first time, lead to electronic balance
Display screen 2 will appear colour cast situation, there is improved space.
Utility model content
The purpose of this utility model is to provide a kind of electronic balance, and the humidity of local environment can be detected in real time,
When humidity is when higher than preset value, prompting staff takes appropriate measures at the first time, improves the use of electronic balance
Effect.
The above-mentioned technical purpose of the utility model technical scheme is that：
A kind of electronic balance, including pedestal, the display screen being set on pedestal, the pedestal is provided with the side of display screen
Face is provided with indicator light, and the one side that the pedestal is provided with display screen offers mounting groove, is equipped in the mounting groove
Mounted box, and one side of the mounting box far from installation groove bottom offers several through-holes, is placed with and is used in the mounting box
Detection humidity is simultaneously converted to the humidity detector of Humidity Detection signal, is additionally provided with that be coupled to humidity detector wet to receive
Degree detection signal and the comparison means, the standard apparatus for comparison means offer reference signal, coupling for exporting comparison signal
In starter of the comparison means to receive comparison signal and be indicated in response to comparison signal with start indicator lamp realization.
When Humidity Detection signal is less than reference signal, the indicator light does not work；When Humidity Detection signal is more than the first base
During calibration signal, the indicator light, which lights, to be indicated.
Using the above scheme, the setting of humidity detector is detected convenient for the humidity to electronic balance local environment,
When environment is moister, the Humidity Detection signal of humidity detector output is more than the first reference signal, starts instruction at this time
Lamp, which is lighted, indicates staff with realizing, takes measures convenient for staff, improves making for display screen to a certain extent
Use the service life；The setting of mounting box, one, which facilitates, is fixed on humidity detector on electronic balance, secondly mounting box examines humidity
Surveying device has certain protective effect, and then improve the accuracy of humidity detector.
Preferably, the standard apparatus is also coupled to be useful for the adjusting apparatus of adjustment reference signal size.
Using the above scheme, the setting of adjusting apparatus so that the size of reference signal can be adjusted, so as to adapt to not
With the humidity of environment, flexibility ratio is high during use, and adjust it is convenient, it is highly practical.
Humidity detector is coupled to receive Humidity Detection signal and export putting for amplified signal preferably, further including
Big device, the comparison means receive amplified signal and export comparison signal to starter.
Using the above scheme, the setting of amplifying device is amplified the Humidity Detection signal of humidity detector output
Afterwards and it is input to comparison means so that comparison means can receive the Humidity Detection signal that faint variation occurs, and then improve
The sensitivity of comparison means, after being secondly amplified to Humidity Detection signal, convenient for being compared with reference signal.
Preferably, the amplifying device includes amplifying circuit, is coupled to amplifying circuit and put for adjusting amplifying circuit
The first of big multiple adjusts circuit.
Using the above scheme, the setting of the first adjusting circuit and amplifying circuit, convenient for being passed through according to specific external environment
It adjusts first to adjust circuit and then change the amplification factor of amplifying circuit, so as to adapt to the humidity of varying environment, when use is flexible
Degree is high, highly practical.
Comparison means is coupled to receive comparison signal and show humidity in response to comparison signal preferably, further including
The display device of value.
Using the above scheme, the setting of display device, when ambient humidity at this time is more than preset value, display device will
It shows the environmental wet angle value residing for Current electronic balance, the humidity value of environment is quickly understood convenient for staff.
Preferably, the display device includes being coupled to comparison means to receive comparison signal and be AD converted and show
Show the display board of humidity value, be coupled to display panel used the second adjusting circuit in adjusting display board brightness.
Using the above scheme, the setting of the second adjusting circuit and display board passes through second convenient for staff and adjusts circuit
Adjusting change display board brightness, with facilitate staff under different light intensities it is clearer read display board on number
Value.
Preferably, the starter, which further includes, is coupled to comparison means to receive comparison signal and export control signal
Control circuit.
Using the above scheme, once the signal of comparator output high level, control circuit are connected and directly control finger at once
Show lamp, start indicator lamp lights, and turn-on time is short, reaction speed is fast.
It contradicts to realize the bullet that box is fixedly mounted with the side of mounting box preferably, the side of the mounting groove is placed with
Property piece, the side of the mounting groove offers the placing groove for placing elastic piece.
Using the above scheme, when the mounting box for being equipped with humidity detector is positioned in mounting groove, elastic piece and peace
Mounted box contradicts and relies on the elastic force of elastic piece that mounting box is fixed.
Preferably, the elastic piece is provided with clamping block, the mounting box and elasticity close to the side of mounting box protrusion
The one side that piece contradicts, which is offered, to be coordinated to realize fixed buckling groove with clamping block.
Using the above scheme, clamping block and buckling groove are used cooperatively so that the fixation of mounting box is more secured, is working
Personnel move electronic balance movement in the case of mounting box still stablize be fixed in placing groove, and simple in structure.
Preferably, the opening for facilitating and taking out mounting box is offered on the another side of the mounting groove.
Using the above scheme, opening is as an embedded point, and when needing replacing humidity detector, staff is led to
The tool of mistake is cut in opening, and then takes out humidity detector and replaced, and it is fast to replace speed.
In conclusion the utility model has the advantages that：
1st, the setting of humidity detector, indicating circuit can examine the humidity of electronic balance local environment in real time
It surveys, when humidity is when higher than preset value, prompting staff takes appropriate measures at the first time, improves making for electronic balance
Use effect；
2nd, the setting of display device clearly obtains the humidity of electronic balance local environment convenient for staff at the first time.
Description of the drawings
Fig. 1 is the structure diagram of electronic balance；
Fig. 2 is the exploded perspective view of electronic balance and mounting box；
Fig. 3 is the enlarged diagram in A portions in Fig. 2；
Fig. 4 is the structure diagram of elastic piece；
Fig. 5 is the circuit diagram in the present embodiment.
In figure：1st, pedestal；2nd, display screen；3rd, indicator light；4th, mounting groove；5th, mounting box；6th, through-hole；7th, Humidity Detection fills
It puts；8th, comparison means；9th, standard apparatus；10th, starter；11st, adjusting apparatus；12nd, amplifying device；13rd, first circuit is adjusted；
14th, display device；15th, display board；16th, second circuit is adjusted；17th, control circuit；18th, elastic piece；19th, placing groove；20th, it is clamped
Block；21st, buckling groove；22nd, opening；23rd, amplifying circuit；24th, indicating circuit；25th, end cap；26th, connecting pole；27th, connecting hole.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
As shown in Figure 1, a kind of electronic balance disclosed in the present embodiment, including pedestal 1, the display screen being set on pedestal 1
2。
As shown in Figure 2,3, display screen 2 is provided on pedestal 1 is provided with square-shaped display board 15, spherical in shape on one side
The indicator light 3 of shape.Display screen 2 is provided on pedestal 1 offers square-shaped mounting groove 4 on one side, is placed in mounting groove 4
Be square the mounting box 5 of setting, and the humidity detector 7 for detecting ambient humidity is installed in mounting box 5, and mounting box 5
Side be connected with and mounting box 5 mutually lid close end cap 25.The upper side of mounting box 5 offers several through-holes 6, and through-hole 6
Be square setting.
As shown in Figure 3,4, square-shaped placing groove 19 is offered at the center of two sides opposite in mounting groove 4,
And integrally it is provided with connecting pole 26 at the center of 19 bottom surface of placing groove.Elastic piece 18, elastic piece 18 are placed in placing groove 19
It is offered at the center of 26 side of connecting pole and is clamped mutually to realize the connecting hole 27 of fixed elastic piece 18 with connecting pole 26.
As shown in figure 3, elastic piece 18 protrudes at the center of 5 one side of mounting box is provided with clamping block 20, and clamping block
20 be in hemispherical setting.The one side that mounting box 5 is contradicted with clamping block 20, which is offered, to be clamped mutually to realize admittedly with clamping block 20
The buckling groove 21 of Dingan County's mounted box 5.It is offered on the opposite side of 4 another two of mounting groove and cuts to realize quickly from peace for tool
The opening 22 of mounting box 5, and 22 arc-shaped setting of opening are taken out in tankage 4.
As shown in figure 5, humidity detector 7 includes resistance R1, humidity sensor, and the model of humidity sensor
SHT11.One end of resistance R1 is connect with power supply VCC, and the other end of resistance R1 and one end of humidity sensor connect.
As shown in figure 5, amplifying device 12, which includes amplifying circuit 23, first, adjusts circuit 13, resistance R2.Amplifying circuit 23 is
The amplifier C1 of integrated computation and the chip for using TLE2682 models, first adjusts circuit 13 as slide rheostat RP1.
As shown in figure 5, the in-phase end of amplifier C1 and the other end of humidity sensor connect, the reverse side point of amplifier C1
Control terminal not with one end of resistance R2, one end of slide rheostat RP1, slide rheostat RP1 is connect, the other end of resistance R2
Ground GND connections, the other end of slide rheostat RP1 are connect with the output terminal of amplifier C1.
As shown in figure 5, when humidity detector 7 detects the humidity of environment and is converted to Humidity Detection signal, amplification
Device C1 is amplified processing to Humidity Detection signal and exports amplified signal.
As shown in figure 5, comparison means 8 is comparator N1 and model LM358, standard apparatus 9 is resistance R3, and first is adjusted
Circuit 13 is slide rheostat RP2.
As shown in figure 5, the in-phase input end of comparator N1 respectively with the output terminal of amplifier C1, slide rheostat RP1
The other end connects, and the inverting input of comparator N1 becomes respectively with one end of resistance R3, one end of slide rheostat RP2, slip
The control terminal connection of device RP2 is hindered, the other end of slide rheostat RP2 is connect with power supply VCC, the other end and the ground GND of resistance R3
Connection.
As shown in figure 5, when the amplified signal that comparator N1 is received is more than reference signal, comparator N1 output high level
Signal；When the amplified signal that comparator N1 is received is less than reference signal, comparator N1 exports low level signal.
As shown in figure 5, starter 10 include control circuit 17, indicating circuit 24, control circuit 17 include triode Q1,
Resistance R4, triode Q1 are NPN type and model S9013, and indicating circuit 24 is indicator light 3 namely Light-emitting diode LED.
As shown in figure 5, one end of resistance R4 is connect with the output terminal of comparator N1, the other end and the triode Q1 of resistance R4
Base stage connection, the emitter of triode Q1 with GND connect, the collector of triode Q1 and the cathode of Light-emitting diode LED
Connection, the anode of Light-emitting diode LED are connect with power supply VCC.
As shown in figure 5, display device 14, which includes second, adjusts circuit 16, resistance R5, display board 15.Second adjusts circuit 16
For slide rheostat RP3.
As shown in figure 5, display device 14 is parallel to indicating circuit 24, one end of slide rheostat RP3 is respectively with shining two
The anode of pole pipe LED, power supply VCC connections, the other end of slide rheostat RP3 are connect with one end of resistance R5, and resistance R5's is another
The one end of one end respectively with the collector of triode Q1, the cathode of Light-emitting diode LED, display board 15 is connect, display board 15
The other end is connect with the control terminal of slide rheostat RP3.
As shown in figure 5, when the signal of comparator N1 output high level, triode Q1 conductings, Light-emitting diode LED shines,
Display board 15 shows the humidity value of environment；When comparator N1 exports low level signal, triode Q1 is not turned on, light-emitting diodes
Pipe LED does not shine, and display board 15 does not work.
The course of work：
1st, when the amplified signal that comparator N1 is received is more than reference signal, comparator N1 exports the signal of high level,
Triode Q1 is connected, and Light-emitting diode LED shines, and display board 15 shows the humidity value of environment；
2nd, when the amplified signal that comparator N1 is received is less than reference signal, comparator N1 exports low level signal,
Triode Q1 is not turned on, and Light-emitting diode LED does not shine, and display board 15 does not work.
This specific embodiment is only explanation to the utility model, is not the limitation to the utility model, ability
Field technique personnel can as needed make the present embodiment the modification of no creative contribution after this specification is read, but
As long as it is all protected in the right of the utility model by Patent Law.
Claims (10)
1. a kind of electronic balance, including pedestal (1), the display screen (2) being set on pedestal (1), it is characterized in that：The pedestal
(1) one side for being provided with display screen (2) is provided with indicator light (3), and the pedestal (1) is provided with the one side of display screen (2)
Mounting groove (4) is offered, mounting box (5) is installed, and the mounting box (5) is far from mounting groove (4) bottom in the mounting groove (4)
The one side in face offers several through-holes (6), is placed with to detect humidity and be converted to Humidity Detection in the mounting box (5)
The humidity detector (7) of signal is additionally provided with and is coupled to humidity detector (7) to receive Humidity Detection signal and export ratio
Comparison means (8) compared with signal, for providing the standard apparatus (9) of reference signal to comparison means (8), be coupled to comparison means
(8) starter (10) to receive comparison signal and be indicated in response to comparison signal with start indicator lamp (3) realization；
When Humidity Detection signal is less than reference signal, the indicator light (3) does not work；When Humidity Detection signal is more than the first benchmark
During signal, the indicator light (3), which lights, to be indicated.
2. a kind of electronic balance according to claim 1, it is characterized in that：The standard apparatus (9) is also coupled to be useful for adjusting
The adjusting apparatus (11) of integral basis calibration signal size.
3. a kind of electronic balance according to claim 1, it is characterized in that：Further include be coupled to humidity detector (7) with
It receives Humidity Detection signal and exports the amplifying device (12) of amplified signal, comparison means (8) the reception amplified signal is simultaneously defeated
Go out comparison signal to starter (10).
4. a kind of electronic balance according to claim 3, it is characterized in that：The amplifying device (12) is including amplifying circuit
(23), it is coupled to amplifying circuit (23) and adjusts circuit (13) for adjusting the first of amplifying circuit (23) amplification factor.
5. a kind of electronic balance according to claim 1, it is characterized in that：It further includes and is coupled to comparison means (8) to receive
Comparison signal and in response to comparison signal to show the display device of humidity value (14).
6. a kind of electronic balance according to claim 5, it is characterized in that：The display device (14) is compared including being coupled to
Device (8) with receive comparison signal and be AD converted and show the display board (15) of humidity value, be coupled to display board (15) use
Circuit (16) is adjusted in adjust display board (15) brightness second.
7. a kind of electronic balance according to claim 1, it is characterized in that：The starter (10), which further includes, is coupled to ratio
Compared with device (8) with receive comparison signal and export control signal control circuit (17).
8. a kind of electronic balance according to claim 1, it is characterized in that：The side of the mounting groove (4) is placed with and pacifies
The side of mounted box (5) contradicts to realize the elastic piece (18) that box (5) is fixedly mounted, and the side of the mounting groove (4) opens up useful
In the placing groove (19) for placing elastic piece (18).
9. a kind of electronic balance according to claim 8, it is characterized in that：The elastic piece (18) is close to mounting box (5)
Side protrusion is provided with clamping block (20), and the one side that the mounting box (5) contradicts with elastic piece (18) offers and clamping block
(20) coordinate to realize fixed buckling groove (21).
10. a kind of electronic balance according to claim 1, it is characterized in that：It is opened up on the another side of the mounting groove (4)
There is the opening (22) for facilitating and taking out mounting box (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721601883.7U CN207556657U (en) | 2017-11-25 | 2017-11-25 | A kind of electronic balance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721601883.7U CN207556657U (en) | 2017-11-25 | 2017-11-25 | A kind of electronic balance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207556657U true CN207556657U (en) | 2018-06-29 |
Family
ID=62680159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721601883.7U Active CN207556657U (en) | 2017-11-25 | 2017-11-25 | A kind of electronic balance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207556657U (en) |
-
2017
- 2017-11-25 CN CN201721601883.7U patent/CN207556657U/en active Active
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