CN109406996A - A kind of multifunctional testing circuit of direct current speed adjustment switch - Google Patents
A kind of multifunctional testing circuit of direct current speed adjustment switch Download PDFInfo
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- CN109406996A CN109406996A CN201811446344.XA CN201811446344A CN109406996A CN 109406996 A CN109406996 A CN 109406996A CN 201811446344 A CN201811446344 A CN 201811446344A CN 109406996 A CN109406996 A CN 109406996A
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- 238000012360 testing method Methods 0.000 title claims abstract description 114
- 238000001514 detection method Methods 0.000 claims abstract description 99
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- 238000007689 inspection Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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Abstract
The present invention provides a kind of multifunctional testing circuits of direct current speed adjustment switch, the circuit includes: the first detection circuit, the second detection circuit, the first test switch, the second test switch, circuit selection switch and controller, first detection circuit is connect with one end of the first test switch, is detected to the brake function, diode and commutation function of direct current speed adjustment switch；One end of second detection circuit is connect with one end of the first test switch, and the other end selects switch and one end of the second test switch to connect with circuit respectively, and the speed-regulating function and switch operating force to direct current speed adjustment switch detect；The input terminal of the motor of direct current speed adjustment switch and the first test switch connection, output end and the second test switch connection；Controller generates the detection circuit of control signal control circuit selection switch selection work at present according to the operation information that user inputs.The multi-functional detection to direct current speed adjustment switch automation is realized, circuit structure is simple, substantially increases detection efficiency.
Description
Technical field
The present invention relates to direct current speed adjustment switch detection fields, and in particular to a kind of multifunctional testing electricity of direct current speed adjustment switch
Road.
Background technique
Dc motor has the characteristics that slow-speed of revolution high-torque, is that ac motor can not replace, therefore be answered extensively
For in all types of industries equipment.Rotational speed regulation of the direct current speed adjustment switch for dc motor in each type electric tool such as electric drill,
The quality of its performance directly affects the work of dc motor, and then influences the performance of product, with the hair of direct current speed adjustment switch
Exhibition, the function having is more and more, and therefore, carrying out multi-functional detection to direct current speed adjustment switch is to ensure that it is safely and effectively transported
Capable important technical.
Currently, common test mode is mostly artificial detection, be unfavorable for in production to direct current speed adjustment switch product into
Row detection, testing efficiency is low, and test function is more single, is generally limited only to the tune to entire direct current speed adjustment switch entirety
Fast function and overload protection function are detected, and lack the test work tested comprehensively direct current speed adjustment switch in the prior art
Tool.
Summary of the invention
In the prior art direct current speed adjustment switch product is detected the technical problem to be solved in the present invention is that overcoming
Mode low efficiency, test function is single, cannot achieve the problem of complete detection, for this purpose, the present invention provides a kind of direct current tune
The multifunctional testing circuit of speed switch.
The embodiment of the invention provides a kind of multifunctional testing circuits of direct current speed adjustment switch, comprising: the first detection circuit,
Second detection circuit, the first test switch, the second test switch, circuit selection switch and controller, wherein first detection
Circuit is connect with one end of the first test switch, for brake function, diode and the reversing work to direct current speed adjustment switch
It can be carried out detection；One end of second detection circuit is connect with one end of the first test switch, the second detection electricity
The other end on road selects switch and one end of the second test switch to connect with the circuit respectively, for the direct current tune
The speed-regulating function and switch operating force of speed switch are detected；The input terminal of the motor of the direct current speed adjustment switch and described first
Test switch connection, the output end of the motor and the second test switch connection；The controller is inputted according to user
Operation information generates control signal, and the detection of the circuit selection switch selection work at present is controlled according to the control signal
Circuit.
Optionally, first detection circuit includes: first switch, the first solid-state relay, first resistor, second opens
It closes, wherein the first switch connect with the first input end of first solid-state relay, first solid-state relay
Second input terminal is connect with one end of the first resistor, the second end of the first resistor connect with the second switch after with
The first test switch connection；The output end of first solid-state relay is according to the first input end and described second defeated
The level signal for entering end input generates outputs level signals；It is generated according to the outputs level signals to the direct current speed adjustment switch
The first testing result for being detected of brake function, diode and commutation function.
Optionally, second detection circuit includes: third switch, load resistance, the 4th switch, first voltage acquisition mould
Block, current acquisition module and frequency acquisition module, wherein one end of the third switch and the first test switch connection,
The other end of the third switch is connect with after load resistance series connection with one end of the 4th switch, the 4th switch
The other end and it is described second test switch connection；The first voltage acquisition module is in parallel with the load resistance, for adopting
Collect the voltage signal of the load resistance；The current acquisition module is in parallel with the load resistance, for acquiring the load
The current signal of resistance；The frequency acquisition module is in parallel with the load resistance, for acquiring the frequency of the load resistance
Signal；The speed regulation to the direct current speed adjustment switch is generated according to the voltage signal, the current signal and the frequency signal
The second testing result that function and switch operating force are detected.
Optionally, the multifunctional testing circuit of the direct current speed adjustment switch further include: third detection circuit, the third inspection
Slowdown monitoring circuit is connected with the temperature protection circuit of the direct current speed adjustment switch, for the temperature protection function to the direct current speed adjustment switch
Energy, voltage starting function and overload protection function are detected.
Optionally, the third detection circuit includes: that voltage output module, second voltage acquisition module and third test are opened
It closes, wherein the one end switched after the voltage output module is in parallel with the second voltage acquisition module with third test
Connection, the temperature protection circuit and third test switch connection；The voltage output module is used for according to predeterminated voltage
Adjust the voltage of the temperature protection circuit；The second voltage acquisition module is used to detect the reality of the temperature protection circuit
Voltage；The temperature protection function to the direct current speed adjustment switch is generated according to the relationship of the virtual voltage and the predeterminated voltage
The third testing result that energy, voltage starting function and overload protection function are detected.
Optionally, when circuit selection closes the switch, the detection circuit of the work at present is first detection
Circuit；When the circuit selects switch to disconnect, the detection circuit of the work at present is second detection circuit.
Optionally, the multifunctional testing circuit of the direct current speed adjustment switch further include: power circuit, for being described first
Detection circuit, the second detection circuit, third detection circuit and direct current speed adjustment switch power supply.
Optionally, the power circuit includes: programme-controlled dc power, electric current inductive switch and the second solid-state relay, institute
It states programme-controlled dc power and connects with the electric current inductive switch and be followed by the output end of second solid-state relay；The electric current
Inductive switch is used to detect the current signal of the programme-controlled dc power；The controller is also used to be controlled according to preset voltage value
The voltage output value of the programme-controlled dc power, and switching signal, control are sent to the input terminal of second solid-state relay
The switch state of second solid-state relay.
Optionally, the controller is also used to control the resistance value of the load resistance according to predetermined resistance value.
Optionally, the controller is connect with the output end of first solid-state relay, for receiving the output electricity
Ordinary mail number, and first testing result is generated according to the outputs level signals.
Technical solution of the present invention has the advantages that
The multifunctional testing circuit of direct current speed adjustment switch provided in an embodiment of the present invention, comprising: the first detection circuit, second
Detection circuit, the first test switch, the second test switch, circuit selection switch and controller, controller are opened by circuit selection
It closes the first detection circuit of selection and the second detection circuit works, wherein the first detection circuit, which realizes, opens DC speed regulation
Brake function, diode and the commutation function of pass are detected, and the second detection circuit is realized to the direct current speed adjustment switch
Speed-regulating function and switch operating force are detected, to realize the multi-functional detection to direct current speed adjustment switch, and circuit knot
Structure is simple, and the control of multifunctional testing is carried out by controller, automatic detection is realized, substantially increases detection efficiency.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of direct current speed adjustment switch in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the multifunctional testing circuit of direct current speed adjustment switch in the embodiment of the present invention；
Fig. 3 is another structural schematic diagram of the multifunctional testing circuit of direct current speed adjustment switch in the embodiment of the present invention；
Fig. 4 is another structural schematic diagram of direct current speed adjustment switch in the embodiment of the present invention.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " first ", " second ", " third " are used for description purposes only,
It is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the connection inside two elements, can be wireless connection, be also possible to wired connection.For those of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
As long as in addition, the non-structure each other of technical characteristic involved in invention described below different embodiments
It can be combined with each other at conflict.
In practical applications, the basic structure schematic diagram of direct current speed adjustment switch is as shown in Figure 1, it mainly includes brake T, continues
Diode D, commutation mechanism G, motor M, the first circuit switch K1, second circuit switch K2 and PCB circuit and MOS circuit are flowed,
Motor M includes input terminal M1 and output end M2, wherein brake T, sustained diode, commutation mechanism G and motor M it is in parallel after with
The series connection of metal-oxide-semiconductor circuit, then connect with after PCB circuit in parallel with the first circuit switch K1, second circuit switch K2 is parallel to first
Circuit switch K1 and MOS circuit both ends, above-mentioned direct current speed adjustment switch are powered by DC power supply B.In the direct current speed adjustment switch
When being worked, make preset movement by controlling the elements such as external servo motor, cylinder, servo meeting driving mechanism is to direct current tune
The first circuit switch K1 and second circuit switch K2 in speed switch have the movement of pressing, the position of these switch motions and state
Corresponding variation occurs, commutation action etc. occurs for cylinder.
The embodiment of the invention provides a kind of multifunctional testing circuits of direct current speed adjustment switch, as shown in Fig. 2, the direct current tune
The multifunctional testing circuit of speed switch includes: the first detection circuit 1, the second detection circuit 2, first test switch KM1, the second survey
KM2, circuit selection switch K and controller 3 are closed in runin, wherein one end of the first detection circuit 1 and the first test switch KM1 connect
It connects, is detected for brake function, diode and the commutation function to direct current speed adjustment switch；One end of second detection circuit 2
It is connect with one end of the first test switch KM1, the other end of the second detection circuit 2 selects switch K and second to survey with circuit respectively
Runin close KM2 one end connection, for direct current speed adjustment switch speed-regulating function and switch operating force detect；DC speed regulation
The input terminal M1 of the motor M of switch is connect with the first test switch KM1, and the test of the output end M2 of motor M and second switch KM2 connects
It connects；Controller 3 generates control signal according to the operation information that user inputs, and selects switch K according to control signal control circuit
Select the detection circuit of work at present.
In practical applications, above-mentioned circuit selection switch K may be arranged as multiple, select to switch by multiple circuits
Open and close avoids accidentally grasping to switch the detection circuit of work at present while K to improve the safety of detection circuit switching
Make.
Pass through the cooperative cooperating of above-mentioned each component part, the multifunctional testing of the direct current speed adjustment switch of the embodiment of the present invention
Circuit realizes the multi-functional detection to direct current speed adjustment switch, and circuit structure is simple, carries out multi-functional survey by controller
The control of examination, realizes automatic detection, substantially increases detection efficiency.
Below with reference to concrete application example, to the multifunctional testing electricity of direct current speed adjustment switch provided in an embodiment of the present invention
Road is described in detail.
In a preferred embodiment, as shown in figure 3, the first above-mentioned detection circuit 1 include: first switch KA1, it is first solid
State relay KW1, first resistor R1, second switch KA2, wherein the first of first switch KA1 and the first solid-state relay KW1
Input terminal connection, the first solid-state relay KW1 the second input terminal connect with one end of first resistor R1, the of first resistor R1
Two ends are connect after connecting with second switch KA2 with the first test switch KM1；The output end of first solid-state relay KW1 is according to
One input terminal and the level signal of the second input terminal input generate outputs level signals；It is generated according to outputs level signals to direct current
The first testing result that brake function, diode and the commutation function of speed-regulating switch are detected.In practical applications, pass through control
System controls the elements such as external servo motor, cylinder and makees preset movement, and servo meeting driving mechanism is to two in direct current speed adjustment switch
A to switch the movement for having pressing, there is corresponding requirement in the position of these switch motions with state, and cylinder has commutation action, and switchs
The variation of corresponding position and movement can promote the first solid-state relay KW1 to act, and whether pass through the first solid-state relay KW1 in this way
It is switched on or is disconnected this signal, to judge the quality of this above-mentioned brake function, diode and commutation function, generates the first detection
As a result.
In a preferred embodiment, as shown in figure 3, the second above-mentioned detection circuit 2 includes: third switch KA3, load electricity
Hinder R2, the 4th switch KA4, first voltage acquisition module U1, current acquisition module I1 and frequency acquisition module F1, wherein third
One end of switch KA3 is connect with the first test switch KM1, the other end of third switch KA3 connect with load resistance R2 after with the
One end of four switch KA4 connects, and the other end of the 4th switch KA4 is connect with the second test switch KM2；First voltage acquisition module
U1 is in parallel with load resistance R2, for acquiring the voltage signal of load resistance R2；Current acquisition module I1 and load resistance R2 are simultaneously
Connection, for acquiring the current signal of load resistance R2；Frequency acquisition module F1 is in parallel with load resistance R2, for acquiring load electricity
Hinder the frequency signal of R2；Generated according to voltage signal, current signal and frequency signal to the speed-regulating function of direct current speed adjustment switch and
The second testing result that switch operating force is detected.
In practical applications, make preset movement by controlling the elements such as external servo motor, cylinder, servo can driving machine
Structure switchs the movement for having pressing to two in direct current speed adjustment switch, and there be corresponding want in the position of these switch motions with state
It asks, cylinder has commutation action, switchs during pressing, with being gradually increased for displacement, output state can also become
Change；It passes through the electricity of the detection switch such as above-mentioned current acquisition module I1, first voltage acquisition module U1, frequency acquisition module F1
Whether the state of gas parameter and the variation for switching operating force meet the requirements, and obtain the second testing result.In addition, in practical application
In, the variation of indicator light corresponding state can be by adding light sensation in above-mentioned second detection circuit 2 during connection for switch
Inductive sensing device is detected, and the present invention is not limited thereto.
Specifically, in one embodiment, when above-mentioned controller 3 controls above-mentioned circuit selection switch K closure, currently
The detection circuit of work is the first detection circuit 1, that is, starts the brake function, diode and commutation function to direct current speed adjustment switch
It is detected；When above-mentioned controller 3, which controls above-mentioned circuit selection switch K, to be disconnected, the detection circuit of work at present is the
Two detection circuits 2 start to detect the speed-regulating function and switch operating force of direct current speed adjustment switch.
In practical applications, another basic structure schematic diagram of direct current speed adjustment switch is as shown in figure 4, it mainly includes stopping
Vehicle T, sustained diode, commutation mechanism G, motor M, the first circuit switch K1, second circuit switch K2 and PCB circuit and MOS
Circuit, wherein brake T, sustained diode, commutation mechanism G and motor M it is in parallel after connect with metal-oxide-semiconductor circuit, then with PCB circuit
It connects after parallel connection with the first circuit switch K1, second circuit switch K2 is parallel to the first both ends circuit switch K1, above-mentioned direct current
Speed-regulating switch is powered by DC power supply B.In the circuit, it is provided with temperature protection circuit in PCB circuit, temperature protection electricity
Road has the function of temperature protection function, voltage starting and overload protection function, to protect direct current speed adjustment switch not to be damaged, when straight
When stream speed-regulating switch has above-mentioned temperature protection circuit, whether effective need to detect these defencive functions.In the DC speed regulation
When switch is worked, make preset movement by elements such as control external motor, cylinders, servo meeting driving mechanism is to direct current tune
The first circuit switch K1 and second circuit switch K2 in speed switch have the movement of pressing, the position of these switch motions and state
Corresponding variation occurs, commutation action etc. occurs for cylinder.
In a preferred embodiment, as shown in figure 3, the multifunctional testing circuit of above-mentioned direct current speed adjustment switch further include:
Third detection circuit 4, third detection circuit 4 are connected with the temperature protection circuit of direct current speed adjustment switch, for opening DC speed regulation
Temperature protection function, voltage starting function and the overload protection function of pass are detected.
Specifically, in one embodiment, as shown in figure 3, above-mentioned third detection circuit 4 include: voltage output module UT,
Second voltage acquisition module U2 and third test switch KM3, wherein voltage output module UT and second voltage acquisition module U2 are simultaneously
It is connect after connection with one end of third test switch KM3, temperature protection circuit is connect with third test switch KM3；Voltage output mould
Block UT is used to adjust the voltage of temperature protection circuit according to predeterminated voltage；Second voltage acquisition module U2 is for detecting temperature protection
The virtual voltage of circuit；According to the relationship of virtual voltage and predeterminated voltage generate to the temperature protection function of direct current speed adjustment switch,
The third testing result that voltage starting function and overload protection function are detected.In embodiments of the present invention, by above-mentioned
Third detection circuit 4 detects the temperature protection circuit of direct current speed adjustment switch.
In practical applications, make preset movement by the elements such as servo motor, cylinder outside control control, servo can drive
Motivation structure switchs the movement for having pressing to two in direct current speed adjustment switch, and servo makes driving mechanism by switch dome to corresponding positions
It sets, by setting different values to voltage output module UT, voltage output module UT adjusts the voltage of temperature protection circuit, passes through
Second voltage acquisition module U2 collects different values under different voltage values to judge that the temperature of direct current speed adjustment switch is protected
Whether protective function, voltage starting function and overload protection function meet the requirements.
In practical applications, above-mentioned first voltage acquisition module U1, second voltage acquisition module U2 and current acquisition mould
Block can be realized using existing analog acquisition card, above-mentioned for example, by using the analog acquisition card of model DAM-7401
Frequency acquisition module F1 can be realized using existing frequency collection card, for example, by using the frequency of model IPRM-7404
Capture card, above-mentioned voltage output module UT can be realized using existing analog output module, for example, by using model
The analog output module of IPRM-4404, the present invention is not limited thereto.
In a preferred embodiment, as shown in figure 3, the multifunctional testing circuit of above-mentioned direct current speed adjustment switch further include:
Power circuit 5, for powering for the first detection circuit 1, the second detection circuit 2, third detection circuit 4 and direct current speed adjustment switch.
The power circuit 5 includes: programme-controlled dc power B, electric current inductive switch KI and the second solid-state relay KW2, programme-controlled dc power B
It connects and is followed by the output end of the second solid-state relay KW2 with electric current inductive switch KI；Electric current inductive switch KI is for detecting journey
Control the current signal of DC power supply B；Controller 3 is also used to control the voltage output of programme-controlled dc power B according to preset voltage value
Value, and switching signal is sent to the input terminal of the second solid-state relay KW2, control the switch state of the second solid-state relay KW2.
The power circuit 5, which realizes, flexibly powers to each detection circuit and direct current speed adjustment switch, avoids frequently replacement test
Power supply further improves detection efficiency, and then realizes the automatic detection to direct current speed adjustment switch.
Specifically, in one embodiment, above-mentioned controller 3 is also used to control load resistance R2's according to predetermined resistance value
Resistance value.Consequently facilitating user can need to carry out flexibly by resistance value of the PLC to load resistance R2 according to actually detected
Control, further improves detection efficiency, and then realize the automatic detection to direct current speed adjustment switch.
Specifically, in one embodiment, above-mentioned controller 3 is connect with the output end of the first solid-state relay KW1, is used for
Outputs level signals are received, and generate the first testing result according to outputs level signals.It in practical applications, can will be above-mentioned
The output result of first solid-state relay KW1 is fed directly to controller 3, using controller 3 powerful analysis and processing capacity,
Direct output test result.In addition, the controller 3 can also be with first voltage acquisition module U1, the electric current in the second detection circuit 2
Second voltage acquisition module U2 connection in acquisition module I1 and frequency acquisition module F1 and third detection circuit 4, will acquire
To all kinds of acquisition data be sent to controller 3, corresponding testing result is obtained after being analyzed by controller 3, to keep away
Exempted from artificial judgment testing result, the automation for realizing testing result generates, and then realize to direct current speed adjustment switch from
Dynamicization detection.
In practical applications, above-mentioned the first test switch KM1, the second test switch KM2 and third test switch KM3
It can according to need and be set as multiple groups, each group includes that the first test switch KM1, the second test switch KM2 and third test are opened
KM3 is closed, each group can connect a direct current speed adjustment switch, when a certain group of switch is all closed then to this group of direct current speed adjustment switch
When being detected, remaining direct current speed adjustment switch can be connected to other groups on inductive switch, after group detection,
The switch of the group need to only be disconnected, and one group of switch for connecting direct current speed adjustment switch is selected all to be closed, it can be to another
Direct current speed adjustment switch is detected, and so as to avoid the time of replacement direct current speed adjustment switch, further improves the efficiency of detection.
In practical applications, above-mentioned controller 3 can be PLC controller, be also possible to PLC controller and other outside
The joints such as processor such as single-chip microcontroller realize corresponding control action, and the present invention is not limited thereto.
In practical applications, the multifunctional testing circuit of direct current speed adjustment switch through the embodiment of the present invention is to DC speed regulation
The process that switch carries out functional test is as follows:
1. passing through control first when brake function, diode and the commutation function to direct current speed adjustment switch detect
Device 3 controls programme-controlled dc power B to the voltage of a setting, then controls above-mentioned first switch KA1, second by controller 3
Switch KA2, circuit selection switch K, the first test switch KM1 and the second test switch KM2 closure, then by controlling external watch
Take the elements such as motor, cylinder and make corresponding actions, servo can driving mechanism to two switches in above-mentioned direct current speed adjustment switch have by
The movement of pressure, the variation for switching corresponding position and movement can promote the first solid-state relay KW1 to act, pass through the first solid-state in this way
Whether relay KW1 is switched on or disconnects this signal, to judge the quality of this above-mentioned three functions.
2. to direct current speed adjustment switch speed-regulating function and switch operating force detect when, controlled first by controller 3
Programme-controlled dc power B processed gives the voltage of a setting, and to the load of load resistance R2 mono- setting, then passes through controller 3
Above-mentioned third switch KA3, the 4th switch KA4, the first test switch KM1 and the second test switch KM2 closure are controlled, is then passed through
It controls the elements such as external servo motor, cylinder and makees corresponding actions, servo meeting driving mechanism is to two in above-mentioned direct current speed adjustment switch
It is a to switch the movement for having pressing, it switchs during pressing, with being gradually increased for displacement, output state can also become
Change；It passes through the electricity of the detection switch such as above-mentioned current acquisition module I1, first voltage acquisition module U1, frequency acquisition module F1
Whether the state of gas parameter and the variation for switching operating force meet the requirements, and obtain the second testing result.In addition, in practical application
In, the variation of indicator light corresponding state can be by adding light sensation in above-mentioned second detection circuit 2 during connection for switch
Inductive sensing device is detected, and the present invention is not limited thereto.
3. when having temperature protection circuit in direct current speed adjustment switch, temperature protection function, electricity to temperature protection circuit
When pressure startup function and overload protection function are detected, programme-controlled dc power B is controlled to a setting by controller 3 first
Voltage above-mentioned third switch KA3 is then controlled by controller 3, the 4th is opened and to the load of load resistance R2 mono- setting
KA4, the first test switch KM1, the second test switch KM2 and third test switch KM3 closure are closed, then by controlling external watch
Take the elements such as motor, cylinder and make corresponding actions, servo can driving mechanism to two switches in above-mentioned direct current speed adjustment switch have by
The movement of pressure, by setting different values to voltage output module UT, temperature protection circuit is adjusted by voltage output module UT
Voltage, judge that DC speed regulation is opened by the different value of second voltage acquisition module U2 collecting under different voltage values
The temperature protection function of pass, voltage starting function, and by the size of the adjusting of controller 3 load resistance R2, it is different to set
Current value, and pass through second voltage acquisition module U2 collecting different values and judge that DC speed regulation is opened under different flow valuves
Whether the overload protection function of pass meets the requirements.
Pass through the cooperative cooperating of above-mentioned each component part, the multifunctional testing of the direct current speed adjustment switch of the embodiment of the present invention
Circuit realizes the multi-functional detection to direct current speed adjustment switch, and circuit structure is simple, carries out multi-functional survey by controller
The control of examination substantially increases detection efficiency, and avoids artificial judgment testing result, realizes the automation of testing result
It generates, and then realizes the automatic detection to direct current speed adjustment switch.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (10)
1. a kind of multifunctional testing circuit of direct current speed adjustment switch characterized by comprising the first detection circuit (1), the second inspection
Slowdown monitoring circuit (2), the first test switch (KM1), the second test switch (KM2), circuit selection switch (K) and controller (3),
In,
First detection circuit (1) connect with one end of the first test switch (KM1), for direct current speed adjustment switch
Brake function, diode and commutation function are detected；
One end of second detection circuit (2) is connect with one end of the first test switch (KM1), the second detection electricity
The other end on road (2) selects switch (K) and one end of the second test switch (KM2) to connect with the circuit respectively, is used for
Speed-regulating function and switch operating force to the direct current speed adjustment switch detect；
The input terminal of the motor of the direct current speed adjustment switch is connect with the first test switch (KM1), the output of the motor
End is connect with the second test switch (KM2)；
The controller (3) generates control signal according to the operation information that user inputs, and controls institute according to the control signal
State the detection circuit of circuit selection switch (K) selection work at present.
2. the multifunctional testing circuit of direct current speed adjustment switch according to claim 1, which is characterized in that first detection
Circuit (1) includes: first switch (KA1), the first solid-state relay (KW1), first resistor (R1), second switch (KA2),
In,
The first switch (KA1) connect with the first input end of first solid-state relay (KW1), first solid-state after
Second input terminal of electric appliance (KW1) is connect with one end of the first resistor (R1), the second end of the first resistor (R1) with
It is connect after second switch (KA2) series connection with the first test switch (KM1)；
The electricity that the output end of first solid-state relay (KW1) is inputted according to the first input end and second input terminal
Ordinary mail number generates outputs level signals；
It is generated according to the outputs level signals and the brake function, diode and commutation function of the direct current speed adjustment switch is carried out
First testing result of detection.
3. the multifunctional testing circuit of direct current speed adjustment switch according to claim 1, which is characterized in that second detection
Circuit (2) includes: third switch (KA3), load resistance (R2), the 4th switch (KA4), first voltage acquisition module (U1), electricity
Flow acquisition module (I1) and frequency acquisition module (F1), wherein
One end of the third switch (KA3) is connect with the first test switch (KM1), and the third switchs the another of (KA3)
One end is connect after connecting with the load resistance (R2) with one end of the 4th switch (KA4), the 4th switch (KA4)
The other end is connect with the second test switch (KM2)；
The first voltage acquisition module (U1) is in parallel with the load resistance (R2), for acquiring the load resistance (R2)
Voltage signal；
The current acquisition module (I1) is in parallel with the load resistance (R2), for acquiring the electric current of the load resistance (R2)
Signal；
The frequency acquisition module (F1) is in parallel with the load resistance (R2), for acquiring the frequency of the load resistance (R2)
Signal；
The speed regulation function to the direct current speed adjustment switch is generated according to the voltage signal, the current signal and the frequency signal
It can and switch the second testing result that operating force is detected.
4. the multifunctional testing circuit of direct current speed adjustment switch according to claim 1, which is characterized in that further include:
Third detection circuit (4), the third detection circuit (4) are connected with the temperature protection circuit of the direct current speed adjustment switch,
It is detected for temperature protection function, voltage starting function and the overload protection function to the direct current speed adjustment switch.
5. the multifunctional testing circuit of direct current speed adjustment switch according to claim 4, which is characterized in that the third detection
Circuit (4) includes: voltage output module (UT), second voltage acquisition module (U2) and third test switch (KM3), wherein
It tests and switchs with the third after the voltage output module (UT) is in parallel with second voltage acquisition module (U2)
(KM3) one end connection, the temperature protection circuit are tested switch (KM3) with the third and are connect；
The voltage output module (UT) is used to adjust the voltage of the temperature protection circuit according to predeterminated voltage；
The second voltage acquisition module (U2) is used to detect the virtual voltage of the temperature protection circuit；
According to the relationship of the virtual voltage and the predeterminated voltage generate the temperature protection function to the direct current speed adjustment switch,
The third testing result that voltage starting function and overload protection function are detected.
6. the multifunctional testing circuit of direct current speed adjustment switch according to claim 1, which is characterized in that when the circuit selects
When selecting switch (K) closure, the detection circuit of the work at present is first detection circuit (1)；
When the circuit selects switch (K) to disconnect, the detection circuit of the work at present is second detection circuit (2).
7. the multifunctional testing circuit of direct current speed adjustment switch according to claim 4, which is characterized in that further include: power supply
Circuit (5), for being first detection circuit (1), the second detection circuit (2), third detection circuit (4) and the direct current tune
Speed switch power supply.
8. the multifunctional testing circuit of direct current speed adjustment switch according to claim 7, which is characterized in that the power circuit
It (5) include: programme-controlled dc power (B), electric current inductive switch (KI) and the second solid-state relay (KW2),
The programme-controlled dc power (B) is connected with the electric current inductive switch (KI) and is followed by second solid-state relay
(KW2) output end；
The electric current inductive switch (KI) is used to detect the current signal of the programme-controlled dc power (B)；
The controller (3) is also used to control the voltage output value of the programme-controlled dc power (B) according to preset voltage value, and to
The input terminal of second solid-state relay (KW2) sends switching signal, controls the switch of second solid-state relay (KW2)
State.
9. the multifunctional testing circuit of direct current speed adjustment switch according to claim 3, which is characterized in that the controller
(3) it is also used to control the resistance value of the load resistance (R2) according to predetermined resistance value.
10. the multifunctional testing circuit of direct current speed adjustment switch according to claim 2, which is characterized in that the controller
(3) it is connect with the output end of first solid-state relay (KW1), for receiving the outputs level signals, and according to described
Outputs level signals generate first testing result.
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| CN201811446344.XA CN109406996B (en) | 2018-11-29 | 2018-11-29 | Multifunctional test circuit of direct current speed regulation switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110265248A (en) * | 2019-07-18 | 2019-09-20 | 科都电气有限公司 | The commutation brake gear and direct current electric power tools switch of direct current electric power tools switch |
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