CN105242106B - The device and method that plurality of voltages can be sampled and detected - Google Patents
The device and method that plurality of voltages can be sampled and detected Download PDFInfo
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- CN105242106B CN105242106B CN201510742791.XA CN201510742791A CN105242106B CN 105242106 B CN105242106 B CN 105242106B CN 201510742791 A CN201510742791 A CN 201510742791A CN 105242106 B CN105242106 B CN 105242106B
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Abstract
The present invention relates to the voltage tester technical fields of electronic equipment, the device and method that more particularly to one kind plurality of voltages can be sampled and detected, including testing result output module and with the multiple power supply signal output ends of power supply to be measured multiple voltage detection modules correspondingly, voltage detection module includes measured voltage amplification attenuation module, A/D sampling module and voltage computing module, sample voltage value and tested time generate V-T curve data to voltage computing module based on the received, it exports to testing result output module, testing result output module exports V-T curve data conversion at the accessible signal of display terminal.The internal multiple voltage detection modules of setting of the invention, can simultaneously detect multiple voltage signals of power supply to be measured；By selecting detection type, the mean value of every road voltage signal can not only be detected, moreover it is possible to detect voltage peak, voltage dips, and the voltage value at each moment is depicted as voltage-vs-time (V-T) curve graph.
Description
Technical field
The present invention relates to the voltage tester technical fields of electronic equipment, and in particular to one kind can sample plurality of voltages
With the device and method of detection.
Background technique
A variety of different operating voltages can be needed to come so that the equipment is normal simultaneously in many sophisticated electronics at present
Whether normal work, in order to ensure the work of these electronic equipment energy normal tables, need to monitor its each operating voltage simultaneously.
And currently on the market the instrument of the existing monitoring voltage including multimeter or multiple measured voltages can not be monitored simultaneously,
It can not be carried out continuously detection for a long time.In addition, the environment of many electronic device works is complicated, interference is big, and existing detection
Instrument is difficult to reliably working in such a case.
For this purpose, in order to meet the work requirements of these electronic equipments, need a kind of to detect simultaneously and continuously Multi-path electricity
Press signal, and the detection device to work under the reliable and stable environment big in complex jamming of energy.
Summary of the invention
In order to solve the above technical problems, the present invention provides works under a kind of reliable and stable environment big in complex jamming of energy
The device and method that plurality of voltages can be sampled and detected made.
The device that one kind of the present invention can sample plurality of voltages and detect, technical solution are, comprising: testing result
Output module and with the multiple power supply signal output ends of power supply to be measured multiple voltage detection modules correspondingly, wherein voltage detecting
Module includes measured voltage amplification attenuation module, A/D sampling module and voltage computing module, and the A/D sampling module includes electricity
Press sampling module and voltage value A/D conversion module；
The measured voltage amplification attenuation module receives the power supply signal of power supply output to be measured, by the voltage in power supply signal
To A/D sampling module, the A/D sampling module carries out sampling to measured voltage and converts with A/D for output after signal decaying or amplification,
And exporting sample voltage value, tested time and synchronous control signal to voltage computing module, the voltage computing module is according to connecing
The sample voltage value of receipts and tested time generate V-T curve data, and export to testing result output module, the testing result
Output module exports received V-T curve data conversion at the accessible signal of display terminal.
Further, the voltage detection module further includes
Voltage detecting selects switch module: exporting selection control signal for detection type to be arranged, and according to detection type
Amplify attenuation module and voltage identification module to measured voltage；
Voltage identification module: the A/D sampling module includes overshoot A/D sampling module, normal A/D sampling module, ultralow
A/D sampling module, the voltage identification module is used to receive selection control signal and measured voltage amplifies attenuation module output
Measured voltage correspondence is input to each of A/D sampling module according to selection control signal and measured voltage amplitude by measured voltage
In unit, and switch-over control signal is inputted to voltage computing module.
Further, the overshoot A/D sampling module includes the sampling of overshoot voltage forward direction and A/D converting unit and overshoot electricity
The reversed sampling of pressure and A/D converting unit, the overshoot voltage forward direction sampling reversely sample with A/D converting unit to overshoot voltage and
A/D converting unit exports synchronous control signal；
The normal A/D sampling module includes that the sampling of normal voltage forward direction is reversely adopted with A/D converting unit and normal voltage
Sample and A/D converting unit, the normal voltage forward direction sampling is reversely sampled with A/D converting unit to normal voltage to be converted with A/D
Unit exports synchronous control signal；
The ultralow A/D sampling module includes that the sampling of ultra low voltage forward direction is reversely adopted with A/D converting unit and ultra low voltage
Sample and A/D converting unit, the ultra low voltage forward direction sampling is reversely sampled with A/D converting unit to ultra low voltage to be converted with A/D
Unit exports synchronous control signal.
Further, each measure loop of power supply to be measured passes through an earth-return circuit module and is connected to ground.
Further, anti-mistake is respectively connected between the input terminal and ground of each voltage detection module and hits module, be used for
Sparking on power supply signal or spike signal are imported into the earth.
Further, anti-tampering earthing module, the anti-tampering ground connection mould are equipped between the adjacent voltage detection module
Block one end is connected to each other, other end ground connection, for being electromagnetically shielded to voltage detection module.
The method that one kind of the present invention can sample plurality of voltages and detect, technical solution are, comprising the following steps:
S1: power supply output multi-channel power supply signal to be measured to voltage detection module；
S2: measured voltage amplification attenuation module receives the power supply signal of power supply output to be measured, by the voltage in power supply signal
It exports after signal decaying or amplification to A/D sampling module；
S3:A/D sampling module carries out sampling to measured voltage and converts with A/D, and export sample voltage value, the tested time and
Synchronous control signal is to voltage computing module；
S4: sample voltage value and tested time generate V-T curve data to voltage computing module based on the received, and export extremely
Testing result output module；
S5: testing result output module converts the accessible signal of display terminal for V-T curve data and exports.
Further, the voltage detection module can by voltage detecting select switch module selection power on, power down, normality
Detection type；
When selecting normality detection, voltage detecting selection switch module output normality selection control signal to measured voltage is put
Measured voltage is amplified or is decayed to suitable subsequent module and works normally by big attenuation module, the measured voltage amplification attenuation module
Voltage after output to voltage identification module, the voltage identification module by voltage output to be measured to normal A/D sampling module or
A/D sampling module is overshooted, and detects switch-over control signal to voltage computing module input normality；
When selection powers on, detection of power loss when, voltage detecting select switch module output power or power-down selection control signal
Amplify attenuation module to measured voltage, the measured voltage amplification attenuation module exports after respectively individually amplifying several times to voltage
To voltage identification module, voltage output to be measured to normal A/D sampling module or ultralow A/D are sampled mould by the voltage identification module
Block, and input and power on to voltage computing module (116), detection of power loss switch-over control signal.
Further, the voltage detection module carries out positive sampling simultaneously to voltage and adopts with A/D conversion process and reversely
Sample and A/D conversion process, the voltage computing module sample positive and the value and reversed sampling and A/D after A/D conversion process
As detection gained voltage output after value averaged after conversion process.
Beneficial effects of the present invention: multiple voltage detection modules are arranged in inside, can be simultaneously to multiple voltages of power supply to be measured
Signal is detected；Electromagnetic shielding is set between voltage detection module, is avoided that each measured voltage signal in the detection process
It influences each other；Sparking on power supply signal or spike interference signal are imported into the earth, are avoided that by external environment
Mistake is detected caused by interference；Positive sampling and reversed sampling are carried out simultaneously, are avoided that caused by internal components drift characteristic
Detection error；It is easy to operate, other ancillary equipments are not necessarily to, continuously measured voltage signal can be detected for a long time, be convenient for work
Large-scale use in factory；It is powered on by selection, power down, normality detection type, the detection type and voltage magnitude according to selection will
Voltage input overshoots A/D sampling module, normal A/D sampling module, ultralow A/D sampling module, can not only detect every road voltage letter
Number mean value, moreover it is possible to detect voltage peak, voltage dips, and the voltage value at each moment be depicted as voltage-vs-time (V-T) song
Line chart.
Detailed description of the invention
Fig. 1 is module connection figure of the present invention；
Fig. 2 is connection figure inside voltage detection module of the present invention；
In figure: 1-voltage detection module, 101-voltage detectings selection switch module, the amplification decaying of 102-measured voltages
Module, 103-voltage identification modules, 104-overshoot voltage forward direction sampling modules, 105-positive overshoot voltage value A/D moduluss of conversion
Block, the reversed sampling module of 106-overshoot voltages, 107-reversed overshoot voltage value A/D conversion modules, 108-normal voltages are positive
Sampling module, 109-forward direction normal voltage value A/D conversion modules, the reversed sampling module of 110-normal voltages, 111-it is reversed just
Normal voltage value A/D conversion module, 112-voltage dips forward direction sampling modules, 113-forward voltage valley A/D conversion modules,
The reversed sampling module of 114-voltage dips, 115-backward voltage valley A/D conversion modules, 116-voltage computing modules, 2-
Earth-return circuit module, 3-anti-tampering earthing modules, 4-anti-mistakes hit module, 5-the earth earthing modules, the output of 6-testing results
Module, A-A/D sampling module.
Specific embodiment
The invention will be further described with example with reference to the accompanying drawing, it is clear that the example is only one of the invention
Point example, rather than whole examples, so the example should not be construed as limiting the invention.
As shown in Figure 1, the present invention includes voltage detection module 1, earth-return circuit module 2, anti-tampering earthing module 3, anti-mistake
Hit module 4, the earth earthing module 5, testing result output module 6.Power supply to be measured is any DC power supply, such as TV electromechanics
Source, including multiple output ends, voltage detection module of connecting on each output end, for detecting each output port output
Voltage.
Wherein, for the earth earthing module 5 for will electrically be connected with actual earth ground, it is a spherical metal
Conductor, buries beneath, and electrical earth signal is made really to become ground potential.Earth-return circuit module 2 is connected to each output of power supply to be measured
Between end and the earth earthing module 5, each voltage detection module 1 is made to work in independent electric loop.It is similar to low-pass filtering
On the one hand device can avoid electrically being poured into voltage detection module 1 because the ground bullet signal of interference formation is counter, on the other hand ensure to connect
Ground impedance, ground potential are unchanged, are not changed by measured voltage and lead to 1 job insecurity of voltage detection module.It is anti-tampering to connect
Ground module 3 is metallic conductor plane, is enclosed between each voltage detection module 1, and in parallel between them, and one end is each other
It connects to connection, the other end and circuit loop, has not only prevented influence of the external disturbance to each voltage detection module 1, but also prevent each
Interfering with each other between a voltage detection module 1.When the electromagnetic distu for thering is external disturbance or voltage detection module 1 itself to occur
When, each anti-tampering earthing module 3 plays electromagnetic shielding action, and its interference signal can be sent into electrically exclusive PCR.
Anti- mistake hit module 4 be connected in parallel on voltage detection module 1 input terminal and electrically between, for preventing moment on measured voltage signal
Electric discharge or spike interference signal (strong jammings such as these signals such as static discharge, power grid short pulse, thunder and lightning) are to of the invention
It destroys.The anti-mistake of normal condition hits module 4 and does not work, and when generating these spike signals, anti-mistake, which hits module 4, to be absorbed rapidly
And be conducted into electrically, so that subsequent conditioning circuit be protected to work normally.
Voltage detection module 1 includes voltage detecting selection switch module 101, measured voltage amplification attenuation module 102, voltage
Identification module 103, A/D sampling module A, voltage computing module 116.A/D sampling module A includes overshoot A/D sampling module, normal
A/D sampling module, ultralow A/D sampling module.A/D sampling module is overshooted by overshoot voltage forward direction sampling module 104, positive overshoot
The reversed sampling module 106 of voltage value A/D conversion module 105, overshoot voltage, reversed 107 structure of overshoot voltage value A/D conversion module
At.Normal A/D sampling module is by normal voltage forward direction sampling module 108, forward direction normal voltage value A/D conversion module 109, normally
Voltage reversal sampling module 110, reversed normal voltage value A/D conversion module 111 are constituted.Ultralow A/D sampling module is by voltage paddy
It is worth positive sampling module 112, forward voltage valley A/D conversion module 113, the reversed sampling module 114 of voltage dips, backward voltage
Valley A/D conversion module 115 is constituted.
Each voltage detection module 1 respectively receives the voltage signal all the way of power supply to be measured, to respective received voltage signal
It is sampled and is detected respectively.Before voltage detection module 1 is detected, switch module 101 is selected by voltage detecting first
Detection type is set, time-series rules, power-off sequential detection, normal operating conditions detection are such as powered on.Voltage detecting selects switching molding
Block 101 is generated according to the different detection types of selection accordingly selects control signal, feeding measured voltage amplification attenuation module 102,
Voltage identification module 103.Measured voltage amplification attenuation module 102 is mentioned for detecting voltage swing to subsequent module normal work
For the measured voltage of an appropriate amplitude.Under normal operating conditions detection type, the control signal that selects received is normal
State selection control signal.It is amplified to appropriate voltage value if measured voltage is too low, if excessively high decay to appropriate value.When powering on
When timing or power-off sequential detection type, what is received selects control signal to select control signal for power or power-down.Because of voltage
Range is larger, (jump 0 to normal range (NR)) relatively rapidly, therefore needs to operate with higher speed detection, and to each small model
The voltage change enclosed does independent amplification, to guarantee that minimum can be detected to maximum voltage value by subsequent module.
Voltage identification module 103 is input to after the 102 pairs of input measured voltage processing of measured voltage amplification attenuation module.Voltage
Identification module 103 is sampled for being sent into different voltage values in different modules.Due to the sampling of different amplitude ranges
It is different with the response range of conversion, precision, in order to more accurately capture the variation of measured voltage, needs to be sent to and do not exist together
In the module of reason.In the detection of normality voltage type, what voltage identification module 103 received selects control signal for normality selection
Signal is controlled, measured voltage is sent to normal A/D sampling module or overshoot A/D according to voltage magnitude by voltage identification module 103
Sampling module.Power on, power-off sequential type detection when, what voltage identification module 103 received select control signal is powers on
Or power down selection control signal is adopted because voltage is changed by 0 to normal voltage to be sent into ultralow A/D according to voltage change amplitude
In egf block or normal A/D sampling module.When switching output module, voltage identification module 103 is accused by switch-over control signal
Know that voltage computing module 116 is switched to the time of which module and switching, so that voltage computing module 116 is to correlation module
Make correctly response in time.
Carried out simultaneously after the voltage for receiving the input of voltage identification module 103, inside A/D sampling module positive sampling with
A/D conversion process, reversed sampling and A/D conversion process.And mutually the identical measurement data of size is done instead to polarity is formed by
Difference calculates, to eliminate because working environment variation (such as temperature, humidity change), internal components working characteristics are drifted about and may
Measurement error caused by the certain disturbing factors generated.Concrete operations are described as follows:
If measured voltage is V, voltage identification module 103 is respectively fed to overshoot voltage forward direction sampling module 104, mistake
Voltage reversal sampling module 106 is rushed, overshoot voltage forward direction sampling module 104 carries out positive sampling once at interval of certain time,
And forward direction overshoot voltage value A/D conversion module 105 then carries out analog-to-digital conversion at a number bit data, due to error above-mentioned
(being assumed to be X), which exists, causes positive overshoot voltage value A/D conversion module 105 that can export the value with error as (V+X).And mistake
Rushing voltage reversal sampling module 106 and reversed overshoot voltage value A/D conversion module 107, then reversely sampling and quantization, polarity are
Negative, then reversed overshoot voltage value A/D conversion module 107 equally value of the output with error is (- V+X).In voltage computing module 116
Have when calculating two data: ((V+X)-(- V+X))/2=X eliminates measurement error to obtain accurate measured voltage.
When carrying out positive sampling and A/D conversion process, reversed sampling with A/D conversion process, to guarantee synchronization, overshoot electricity
Positive pressure is to sampling module 104 and forward direction overshoot voltage value A/D conversion module 105 to the reversed sampling module of overshoot voltage 106 and instead
Synchronous control signal is exported (in A/D sampling module to overshoot voltage value A/D conversion module 107 and voltage computing module 116
Synchronous control signal is also sent in the manner described above between remaining module).Voltage computing module 116 receives synchronously control letter
Number, synchronized update measured voltage data are sent after measured voltage data, measured voltage time of measuring are fabricated to V-T curve data
Enter testing result output module 6.V-T curve data are converted display terminal (display screen or PC) by testing result output module 6
Accessible signal output.
The above description is merely a specific embodiment, it is noted that anyone skilled in the art exists
Disclosed herein technical scope in, any changes or substitutions that can be easily thought of, should all cover protection scope of the present invention it
It is interior.
Claims (8)
1. the device that one kind can sample plurality of voltages and detect, it is characterised in that: including testing result output module (6)
With with the multiple power supply signal output ends of power supply to be measured multiple voltage detection modules (1) correspondingly, wherein voltage detection module
It (1) include that measured voltage amplification attenuation module (102), A/D sampling module (A) and voltage computing module (116), the A/D are adopted
Egf block (A) includes voltage sample module and voltage value A/D conversion module；
Measured voltage amplification attenuation module (102) receives the power supply signal of power supply output to be measured, by the electricity in power supply signal
Output is to A/D sampling module (A) after pressing signal decaying or amplification, the A/D sampling module (A) to measured voltage carry out sampling with
A/D conversion, and sample voltage value, tested time and synchronous control signal are exported to voltage computing module (116), the potentiometer
Calculating module (116), sample voltage value and tested time generate V-T curve data based on the received, and export to testing result and export
Module (6), the testing result output module (6) is by received V-T curve data conversion at the accessible signal of display terminal
Output；
The voltage detection module (1) includes voltage identification module (103): the A/D sampling module includes that overshoot A/D samples mould
Block, normal A/D sampling module, ultralow A/D sampling module, the voltage identification module (103) is for receiving selection control signal
It, will be by according to selection control signal and measured voltage amplitude with the measured voltage of measured voltage amplification attenuation module (102) output
It surveys voltage correspondence to be input in each unit of A/D sampling module, and believes to voltage computing module (116) input switching control
Number；
After the voltage for receiving voltage identification module (103) input, positive sampling and A/ are carried out inside A/D sampling module simultaneously
D conversion process, reversed sampling and A/D conversion process, and mutually the identical measurement data of size makes the difference instead to polarity is formed by
Value calculates.
2. the device that can be sampled and be detected to plurality of voltages as described in claim 1, it is characterised in that: the voltage detecting
Module (1) further includes
Voltage detecting selection switch module (101): selection control signal is exported for detection type to be arranged, and according to detection type
To measured voltage amplification attenuation module (102) and voltage identification module (103).
3. the device that can be sampled and be detected to plurality of voltages as claimed in claim 2, it is characterised in that: the overshoot A/D
Sampling module includes the sampling of overshoot voltage forward direction and A/D converting unit and overshoot voltage reversely samples and A/D converting unit, described
The sampling of overshoot voltage forward direction, which is reversely sampled with A/D converting unit to overshoot voltage, exports synchronous control signal with A/D converting unit；
The normal A/D sampling module include the sampling of normal voltage forward direction reversely sample with A/D converting unit and normal voltage and
A/D converting unit, the normal voltage forward direction sampling reversely sample and A/D converting unit with A/D converting unit to normal voltage
Export synchronous control signal；
The ultralow A/D sampling module include the sampling of ultra low voltage forward direction reversely sample with A/D converting unit and ultra low voltage and
A/D converting unit, the ultra low voltage forward direction sampling reversely sample and A/D converting unit with A/D converting unit to ultra low voltage
Export synchronous control signal.
4. the device that can be sampled and be detected to plurality of voltages as described in claim 1, it is characterised in that: the power supply to be measured
Each measure loop passes through an earth-return circuit module (2) and is connected to ground.
5. the device that can be sampled and be detected to plurality of voltages as described in claim 1, it is characterised in that: each voltage
Be respectively connected with anti-mistake between the input terminal and ground of detection module (1) and hit module (4), for by sparking on power supply signal or
Spike signal imports the earth.
6. the device that can be sampled and be detected to plurality of voltages as described in claim 1, it is characterised in that: the adjacent voltage
Anti-tampering earthing module (3) are equipped between detection module (1), described anti-tampering earthing module (3) one end is connected to each other, the other end
Ground connection, for being electromagnetically shielded to voltage detection module (1).
7. using the device that described in any one of claim 1-6 plurality of voltages can be sampled and detected carry out sampling with
The method of detection, which comprises the following steps:
S1: power supply output multi-channel power supply signal to be measured to voltage detection module (1)；
S2: measured voltage amplifies the power supply signal that attenuation module (102) receive power supply output to be measured, by the voltage in power supply signal
It exports after signal decaying or amplification to A/D sampling module (A)；
S3:A/D sampling module (A) carries out sampling to measured voltage and converts with A/D, and export sample voltage value, the tested time and
Synchronous control signal is to voltage computing module (116)；
S4: sample voltage value and tested time generate V-T curve data to voltage computing module (116) based on the received, and export
To testing result output module (6)；
S5: testing result output module (6) converts the accessible signal of display terminal for V-T curve data and exports；
The voltage detection module (1) can by voltage detecting select switch module (101) selection power on, power down, normality detect
Type；
When selecting normality detection, voltage detecting selects switch module (101) output normality selection control signal to measured voltage
Amplify attenuation module (102), measured voltage amplification attenuation module (102) measured voltage is amplified or decay to be suitble to it is subsequent
To voltage identification module (103), the voltage identification module (103) is defeated by voltage to be measured for output after the voltage that module works normally
Out to normal A/D sampling module or overshoot A/D sampling module, and to voltage computing module (116) input normality detection switching control
Signal processed；
The voltage detection module (1) carries out positive sampling simultaneously to voltage and converts with A/D conversion process and reversed sampling with A/D
Processing, the voltage computing module (116) by positive sampling with after A/D conversion process value and reversed sampling at A/D conversion
As detection gained voltage output after the poor averaged of value after reason.
8. the method that can be sampled and be detected to plurality of voltages as claimed in claim 7, it is characterised in that: when selection powers on,
When detection of power loss, voltage detecting selects switch module (101) output power or power-down selection control signal to measured voltage to amplify
Attenuation module (102), measured voltage amplification attenuation module (102) export after respectively individually amplifying several times to voltage to electricity
It presses identification module (103), the voltage identification module (103) is by voltage output to be measured to normal A/D sampling module or ultralow A/D
Sampling module, and input and power on to voltage computing module (116), detection of power loss switch-over control signal.
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| US10012680B2 (en) * | 2014-02-14 | 2018-07-03 | Infineon Technologies Austria Ag | AC input signal detection |
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| CN2317482Y (en) * | 1998-02-05 | 1999-05-05 | 四川长虹电子集团公司 | Voltage detector |
| CN101629975A (en) * | 2009-04-27 | 2010-01-20 | 成都纵横测控技术有限公司 | Relay contact-voltage measuring and conditioning circuit and measuring method |
| CN101776708A (en) * | 2010-01-20 | 2010-07-14 | 中兴通讯股份有限公司 | Multichannel voltage collecting device and method |
| CN202330663U (en) * | 2011-09-03 | 2012-07-11 | 镇江恒驰科技有限公司 | Voltage collecting circuit for single battery of battery pack |
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