CN209728048U - A kind of novel voltage tester - Google Patents
A kind of novel voltage tester Download PDFInfo
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- CN209728048U CN209728048U CN201920394431.9U CN201920394431U CN209728048U CN 209728048 U CN209728048 U CN 209728048U CN 201920394431 U CN201920394431 U CN 201920394431U CN 209728048 U CN209728048 U CN 209728048U
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- voltage
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- circuit module
- voltage tester
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Abstract
The utility model discloses a kind of novel voltage testers, including cabinet；Cabinet includes front panel, rear panel, voltage tester PCBA component；Cabinet is internally provided with voltage tester PCBA component；LCD display, multiple keys, multiple LED lights are provided on front panel；Power switch, voltage tester port, serial ports terminal, power input socket are provided on rear panel；Voltage tester PCBA component includes single-chip microcontroller, voltage commutation circuit module, setting circuit module；The input terminal of voltage commutation circuit module is connected with voltage tester port, output end is connected with the input terminal of single-chip microcontroller；The output end of single-chip microcontroller is connected with alarm indication circuit module；Circuit module is arranged to be connected with the input terminal of single-chip microcontroller.The utility model not only avoids the generation of artificial erroneous judgement；And reduce the testing time, while plurality of voltages can be tested simultaneously, it can be widely applied to each voltage measurement field.
Description
Technical field
The utility model relates to a kind of voltage tester more particularly to a kind of novel voltage testers.
Background technique
Measurement operating voltage uses multimeter at present, and with two test pencils, a ground connection, a point touches voltage tester
Point, the voltage value visually displayed that judge whether qualification according to the bound that job instruction requires.Existing voltage measurement side
Method not only needs operating personnel to grasp the requirement and reading judgment method of instrument, needs to find test point, carry out one by one
Test expends the testing time, and cannot test plurality of voltages simultaneously, and test data cannot save, while manual work speed
Slowly, the measurement of plurality of voltages output is especially apparent, and measures different voltage for a long time, it can for the judgement of bound
Deviation can be had, causes to judge by accident.
Utility model content
In order to solve shortcoming present in above-mentioned technology, the utility model provides a kind of novel voltage tester.
In order to solve the above technical problems, the technical solution adopted in the utility model is: a kind of novel voltage tester, packet
Include cabinet；Cabinet includes front panel, rear panel, voltage tester PCBA component；Cabinet is internally provided with voltage tester PCBA group
Part；LCD display, multiple keys, multiple LED lights are provided on front panel；Power switch, voltage are provided on rear panel
Test port, serial ports terminal, power input socket；
Voltage tester PCBA component includes single-chip microcontroller, voltage commutation circuit module, setting circuit module；Voltage commutation circuit
The input terminal of module is connected by printing circuit board line with voltage tester port, output end passes through printing circuit board line and monolithic
The input terminal of machine is connected；The output end of single-chip microcontroller is connected by serial ports terminal with pc client；The output end of single-chip microcontroller is logical
Oversampling circuit plate track is connected with alarm indication circuit module；Circuit module is set and passes through printing circuit board line and single-chip microcontroller
Input terminal is connected；Single-chip microcontroller, voltage commutation circuit module, alarm indication circuit module pass through printing circuit board line and power supply
Input socket is connected；
Voltage commutation circuit module includes multiple relays；Two input terminals of relay pass through printing circuit board line respectively
It is connected with the two-way input terminal of voltage tester port, output end passes through printing circuit board line, adjustable resistance and single-chip microcontroller
The port ADC is connected all the way；The control terminal of multiple relays passes through multiple control terminals of printing circuit board line and single-chip microcontroller respectively
Mouth is connected；Voltage tester port is connected by adjustable resistance with the port ADC all the way of single-chip microcontroller；
It includes multiple keys, multiple pull-up resistors that circuit module, which is arranged,；Multiple keys pass through respectively printing circuit board line with
Multiple I/O ports of single-chip microcontroller are connected；One end of pull-up resistor passes through printing circuit board line and is connected with power input socket
It connects, the other end passes through printing circuit board line and is connected with key；
Alarm indication circuit module includes LCD display, buzzer, multiple LED lights；LCD display by contact pin,
Printing circuit board line is connected with the I/O port of single-chip microcontroller；Buzzer, LED light pass through printing circuit board line and monolithic respectively
The I/O port of machine is connected.
Single-chip microcontroller is STC15F2K60S2 single-chip microcontroller.
The communication terminal of single-chip microcontroller is connected by printing circuit board line with serial ports terminal.
Voltage commutation circuit module further includes triode, diode, resistance；Triode, diode, resistance and it is multiple after
Electric appliance is respectively provided on circuit boards.
Power input socket is connected by power supply line with the power supply adaptor of 5VDC.
Front panel is connected by box cover, cabinet lower cover with rear panel.
The utility model not only reduces the instrument requirement of operating personnel, does not need study how using instrument, such as
What reads and judges whether numerical value is qualified, avoids the generation of artificial erroneous judgement；And do not need to find test point, it surveys one by one
Examination, reduces the testing time, while can test plurality of voltages simultaneously, and computer can be issued by serial communication, saves number
According to can be widely applied to each voltage measurement field.
Detailed description of the invention
Fig. 1 is the decomposition texture schematic diagram of the utility model.
Fig. 2 is the connection relationship block diagram of voltage tester PCBA component.
Fig. 3 is the circuit diagram of single-chip microcontroller.
Fig. 4 is the circuit diagram of voltage commutation circuit module.
Fig. 5 is the circuit diagram that circuit module is arranged.
Fig. 6 is the circuit diagram of LED light.
Fig. 7 is the circuit diagram of LCD display.
Fig. 8 is the circuit diagram of buzzer.
Fig. 9 is the circuit diagram of serial communication circuit.
Figure 10 is the circuit diagram of voltage input circuit.
Figure 11 is electric source filter circuit figure.
In figure: 1, front panel；2, rear panel；3, voltage tester PCBA component；4, LCD display；5, power switch；6, electric
Press test port；7, serial ports terminal；8, power input socket.
Specific embodiment
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
A kind of novel voltage tester as shown in Figure 1 and Figure 2, including cabinet；Cabinet includes front panel 1, rear panel 2, electricity
Pressure test PCBA component 3；Front panel 1 is connected by box cover, cabinet lower cover with rear panel 2.Cabinet is internally provided with
Voltage tester PCBA component 3；LCD display 4, multiple keys, multiple LED lights are provided on front panel 1；On rear panel 2
It is provided with power switch 5, voltage tester port 6, serial ports terminal 7, power input socket 8；Power input socket 8 passes through power supply line
It is connected with the power supply adaptor of 5VDC.Power supply adaptor provides 5VDC power supply for each module.As shown in Figure 10, Figure 11, power supply
Input socket 8 is connected with voltage input circuit, mainly plays pressure stabilization function, it is ensured that the 5V voltage of input is normal.Such as Fig. 9 institute
Show, the communication terminal of single-chip microcontroller is connected by printing circuit board line with serial ports terminal 7；Serial ports terminal 7 can pass through serial communication
Line is connect with computer.Voltage tester port 6 can input the voltage signal that 15 tunnels are less than 25V.
The function of each switch key on front panel 1: LCD display 4 shows state；" mode " switch: left side is test mould
Formula；Right side is Setting pattern.Test pattern: detecting test port in test mode, if being shorted to ground, enters test shape
State；Otherwise software returns to starting point, is waited for.Setting pattern: parameter can be configured to each step." work shape
State " switch: left side is follow-on test state；Right side is single stepping test state.Follow-on test: it according to the step of setting, continuously adopts
Collect the voltage of test port and compared with standard value, finally uniformly provides result after ADC transformation.The display of LCD display 4, simultaneously
Buzzer prompt.Single stepping test: according to the step of setting, after first port processing voltage, ADC transformation, with standard value ratio
Compared with LCD display 4 shows result；By in next step, next port voltage is acquired." study " key: input voltage, by finishing classes and leave school
Key is practised, the voltage being currently accessed is set as standard value.The design has self-learning function, will after can having connected input signal
Current voltage study is set as standard value, after regulating bound, i.e., operable, convenient and efficient." next step " key: it is setting
It sets or use when single stepping test." confirmation " key: it is used in setting.LED light (red green): display test result.
As shown in Fig. 2, voltage tester PCBA component 3 includes single-chip microcontroller, voltage commutation circuit module, setting circuit module；
The input terminal of voltage commutation circuit module is by the way that printing circuit board line is connected with voltage tester port 6, output end passes through circuit
Plate track is connected with the input terminal of single-chip microcontroller；The output end of single-chip microcontroller is connected by serial ports terminal 7 with pc client；It is single
The output end of piece machine is connected by printing circuit board line with alarm indication circuit module；Circuit module is arranged to print by circuit board
Line processed is connected with the input terminal of single-chip microcontroller；Single-chip microcontroller, voltage commutation circuit module, alarm indication circuit module pass through circuit
Plate track is connected with power input socket 8；Circuit module is set, the data set are transferred to single-chip microcontroller, single-chip microcontroller connects
The voltage signal that transmits of relay in voltage commutation circuit module is received, and digital quantity is obtained according to the conversion of ADC, and it is default
Value comparison, as a result prompts operator by alarm indication circuit module.Single-chip microcontroller controls relay by control port
The circuit switching of device.Single-chip microcontroller sends information to computer by serial communication circuit and saves, in case the later period checks.
As shown in figure 4, voltage commutation circuit module includes multiple relays；Two input terminals of relay pass through electricity respectively
Road plate track is connected with the two-way input terminal of voltage tester port 6, output end passes through printing circuit board line, adjustable resistance
It is connected with the port ADC all the way of single-chip microcontroller；Voltage commutation circuit module includes 7 relays, and two of each relay are defeated
Enter end be connected respectively with the two-way input terminal of voltage tester port 6, output end is connected with the port ADC all the way of single-chip microcontroller
It connecing, single-chip microcontroller has the 8 road ports ADC, and the remaining port ADC all the way is connected by adjustable resistance with voltage tester port 6, thus
Realize the voltage measurement on 15 tunnels；The control terminal of multiple relays passes through multiple controls of printing circuit board line and single-chip microcontroller respectively
Port is connected；Voltage tester port 6 is connected by adjustable resistance with the port ADC all the way of single-chip microcontroller；Each relay
Control terminal is connected with a control port of single-chip microcontroller；Voltage commutation circuit module further includes triode, diode, electricity
Resistance；The original parts such as triode, diode, resistance and multiple relays are respectively provided on circuit boards.Triode, diode, resistance
Between be connected by printing circuit board line.
Since STC15F2K60S2 single-chip microcontroller there are the 8 road ports ADC, in order to increase test quantity, voltage switching electricity is increased
Road module, voltage commutation circuit module, which is provided with 7 relays, makes testable voltage by SCM program switching control
Quantity increases to 14 tunnels, and another road voltage is connected by adjustable resistance with the port ADC of single-chip microcontroller, so the design can be same
When test 15 road voltages.
Using the ADC function of single-chip microcontroller, analog voltage is converted into digital quantity, utilizes program and the standard value of setting ratio
Compared with whether the tested voltage of judgement is qualified.Using this equipment, when operation, it is only necessary to needle bed is depressed, by 1-2 seconds, equipment
LCD display 4 can show whether PCBA qualified, operator does placement processing to PCBA according to display respectively.It can be simultaneously
Plurality of voltages is tested, and computer can be issued by serial communication circuit, saves data.
As shown in figure 5, setting circuit module includes multiple keys, multiple pull-up resistors；Multiple keys pass through circuit respectively
Plate track is connected with multiple I/O ports of single-chip microcontroller；One end of pull-up resistor passes through printing circuit board line and power input
Socket 8 is connected, the other end passes through printing circuit board line and is connected with key；Setting circuit module include key, jack, on
The elements such as pull-up resistor, for adjusting the working condition of single-chip microcontroller.
As shown in figs 6-8, alarm indication circuit module includes LCD display 4, buzzer, multiple LED lights；LCD is aobvious
Display screen 4 is connected by contact pin, printing circuit board line with the I/O port of single-chip microcontroller；Buzzer, LED light pass through circuit respectively
Plate track is connected with the I/O port of single-chip microcontroller.Alarm indication circuit module includes LCD display 4, LED light, buzzing
Device and Resistor-Capacitor Unit.Alarm indication circuit module receives the order of single-chip microcontroller, issues display corresponding with result and sound.Such as
The voltage value that fruit measures is qualified, then LED light gives a green light, and shows numerical value on LCD display 4；If the electricity measured
Pressure value is unqualified, then LED light sends out a warning, and numerical value is shown on LCD display 4, buzzer warning, prompts work people
Member.
As shown in figure 3, the single-chip microcontroller that the design uses is STC15F2K60S2, there are 38 I/O ports, wherein the port ADC
8, digital signal can be converted analog signals into, to protect port not damaged by external instant high-voltage, has added pressure stabilizing two
Pole pipe element.The design utilizes the ADC port processing voltage signal of single-chip microcontroller (STC15F2K60S2), converts analog signals into
Figure pattern compared with completing with numerical reference, exports result by LCD display 4 and LED light.Single-chip microcontroller cooperation is corresponding
Module receives signal, judging result, driving alarm indication circuit module work in the state of setting.
STC15 series monolithic ADC is by multidiameter option switch, comparator, gradually comparand register, 10 DAC, Change-over knots
Fruit register (ADC_RES and ADC_RESL) and ADC_CONTR are constituted.The ADC of STC15 series monolithic is gradually to compare type
ADC.Gradually comparison A/D C is made of a comparator and D/A converter, by gradually CL Compare Logic, is opened from highest order (MSB)
Begin, sequentially each input voltage and the output of built-in D/A converter are compared, by repeatedly comparing, make to convert resulting
Digital quantity Approach by inchmeal inputs analog quantity respective value.Gradually comparing type D/A converter has many advantages, such as that speed is high, low in energy consumption.
It can be seen that from Fig. 3, Fig. 4 through analog multichannel switch, and given and compared by the analog input of ADC0~7
Device.It is compared with the analog quantity of input by comparator with the analog quantity that D/A converter (DAC) is converted, by comparison result
It is saved in gradually comparand register, and transformation result is exported by gradually comparand register.After A/D conversion end, final turns
It changes result and is saved in ADC transformation result register ADC_RES and ADC_RESL, meanwhile, set ADC controls register ADC_
A/D conversion end mark ADC_FLAG in CONTR for program inquiring or issues interruption application.The selection control of analog channel
System is determined by CHS2~CHS0 in ADC control register ADC_CONTR.The conversion speed of ADC is by ADC control register
SPEED1 and SPEED0 is determined.It before using ADC, should first be powered on to ADC, that is, in set ADC control register
ADC_POWER.
The working process of the utility model is as follows: voltage tester pre-sets the bound of test voltage；Test when
It waits, the operating voltage for needing to test finished product is connected with test needle bed, voltage tester is passed through into serial ports terminal 7 and computer phase
Connection, the operating voltage for needing to test finished product is input in voltage tester by testing needle bed, after startup program, to received
Data are compared, and obtain a result through LED light and the display of LCD display 4, operator simply can visually sentence
Whether disconnected tested finished product is qualified；Artificial erroneous judgement is avoided, while can be stored data into computer by serial ports terminal 7, with
It is standby to check and count in the future.
The PCBA product of production before testing, needs to test working power, it is ensured that operating voltage is normal, the design
Mainly solve the problems, such as the multiple voltages (DC25V or less) of test, 25V voltage signal the design below can test, not only
It is limited to the operating voltage of PCBA product.Before testing, the voltage value of test and bound are set, it, will by testing needle bed
Voltage signal on circuit board, which connects, to be come, and voltage tester port 6 is accessed.Plurality of voltages can be completed in 1~2S, and be shown
Show as a result, buzzer sound production prompt.Eliminate artificial factor of judgment, can quick and precisely test voltage effect.
Before PCBA test, power-up measures the operating voltage of multiple key points, can continuously be measured by setting, can also be with
Single step measurement, is used for fault inspecting.The range of each operating voltage is adjustable, is calibrated according to the value of actual test.This
Design can at most measure 15 road voltages, can be set continuously measure a few road voltages as needed, and save setting.
Compared with prior art, the utility model can produce it is following the utility model has the advantages that
1) speed of test is improved, it is particularly evident to multi-point sampler；
2) artificial judgement is eliminated to be judged by program, test result is more acurrate after data acquisition；
3) record data automatically save, and facilitate subsequent access；
4) low manufacture cost, power consumption are small.
The design uses STC single-chip microcontroller, carries out A/D conversion, tests input voltage, can carry out simple programming, continuous to survey
The voltage on 15 tunnels is tried, is suitble to the demand of production PCBA test multipoint voltage, quick and precisely meets production, be widely portable to each electricity
Press testing field.
Above embodiment is not limitations of the present invention, and the utility model is also not limited to the example above,
The variations, modifications, additions or substitutions that those skilled in the art are made within the scope of the technical solution of the utility model,
Also the protection scope of the utility model is belonged to.
Claims (6)
1. a kind of novel voltage tester, it is characterised in that: including cabinet；The cabinet include front panel (1), rear panel (2),
Voltage tester PCBA component (3)；Cabinet is internally provided with voltage tester PCBA component (3)；It is provided on the front panel (1)
LCD display (4), multiple keys, multiple LED lights；Power switch (5), voltage tester are provided on the rear panel (2)
Port (6), serial ports terminal (7), power input socket (8)；
The voltage tester PCBA component (3) includes single-chip microcontroller, voltage commutation circuit module, setting circuit module；The voltage
The input terminal of switching circuit module is by the way that printing circuit board line is connected with voltage tester port (6), output end passes through circuit board
Track is connected with the input terminal of single-chip microcontroller；The output end of the single-chip microcontroller is connected by serial ports terminal (7) with pc client
It connects；The output end of single-chip microcontroller is connected by printing circuit board line with alarm indication circuit module；The setting circuit module is logical
Oversampling circuit plate track is connected with the input terminal of single-chip microcontroller；The single-chip microcontroller, voltage commutation circuit module, alarm indication circuit
Module passes through printing circuit board line and is connected with power input socket (8)；
The voltage commutation circuit module includes multiple relays；Two input terminals of the relay are printed by circuit board respectively
Line processed is connected with the two-way input terminal of voltage tester port (6), output end passes through printing circuit board line, adjustable resistance and list
The port ADC all the way of piece machine is connected；The control terminal of multiple relays passes through the multiple of printing circuit board line and single-chip microcontroller respectively
Control port is connected；The voltage tester port (6) is connected by adjustable resistance with the port ADC all the way of single-chip microcontroller；
The setting circuit module includes multiple keys, multiple pull-up resistors；The multiple key passes through printing circuit board respectively
Line is connected with multiple I/O ports of single-chip microcontroller；One end of the pull-up resistor passes through printing circuit board line and power input is inserted
(8) are connected seat, the other end passes through printing circuit board line and is connected with key；
The alarm indication circuit module includes LCD display (4), buzzer, multiple LED lights；The LCD display
(4) it is connected by contact pin, printing circuit board line with the I/O port of single-chip microcontroller；The buzzer, LED light pass through electricity respectively
Road plate track is connected with the I/O port of single-chip microcontroller.
2. novel voltage tester according to claim 1, it is characterised in that: the single-chip microcontroller is that STC15F2K60S2 is mono-
Piece machine.
3. novel voltage tester according to claim 2, it is characterised in that: the communication terminal of the single-chip microcontroller passes through circuit
Plate track is connected with serial ports terminal (7).
4. novel voltage tester according to claim 3, it is characterised in that: the voltage commutation circuit module further includes
Triode, diode, resistance；The triode, diode, resistance and multiple relays are respectively provided on circuit boards.
5. novel voltage tester according to claim 4, it is characterised in that: the power input socket (8) passes through electricity
Source line is connected with the power supply adaptor of 5VDC.
6. described in any item novel voltage testers according to claim 1~5, it is characterised in that: the front panel (1) passes through
Box cover, cabinet lower cover are connected with rear panel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920394431.9U CN209728048U (en) | 2019-03-27 | 2019-03-27 | A kind of novel voltage tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920394431.9U CN209728048U (en) | 2019-03-27 | 2019-03-27 | A kind of novel voltage tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209728048U true CN209728048U (en) | 2019-12-03 |
Family
ID=68688705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920394431.9U Active CN209728048U (en) | 2019-03-27 | 2019-03-27 | A kind of novel voltage tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209728048U (en) |
-
2019
- 2019-03-27 CN CN201920394431.9U patent/CN209728048U/en active Active
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