CN209560015U - A kind of zero firewire of controller and ground line detection circuit - Google Patents
A kind of zero firewire of controller and ground line detection circuit Download PDFInfo
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- CN209560015U CN209560015U CN201821901270.XU CN201821901270U CN209560015U CN 209560015 U CN209560015 U CN 209560015U CN 201821901270 U CN201821901270 U CN 201821901270U CN 209560015 U CN209560015 U CN 209560015U
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Abstract
The utility model relates to a kind of zero firewire of controller and ground line detection circuit, detection circuit includes: to connect with controller zero line side, and the voltage input circuit of predeterminated voltage is inputted to controller zero line side；It is connect with controller ground terminal, detects the first detection circuit of controller ground terminal electric signal；It is connect respectively with controller zero line and controller ground terminal, detects the second detection circuit of the voltage difference between controller zero line and controller ground terminal.The utility model embodiment is by inputting predeterminated voltage in controller zero line side, and whether connect pair according to zero firewire of the voltage difference confirmation controller between the electric signal of controller ground terminal and controller zero line and controller ground terminal and whether the ground terminal of controller connects ground wire, the connection for quickly confirming each route of controller according to the Different Results of detection circuit output is realized, the safety of staff's maintenance is improved.
Description
Technical field
The utility model relates to controller circuitry technical field more particularly to a kind of zero firewire of controller and ground wire detection electricity
Road.
Background technique
Controller (English name: controller) refers to the wiring for changing main circuit or control circuit according to predetermined order
Starting, speed regulation, braking and reversely main that motor is controlled with resistance value in change circuit enable device.By program counter,
Command register, command decoder, clock generator and operation controller composition, it is publication order " policy-making body ", i.e.,
It completes coordination and commands the operation of entire computer system.
Normal controller mainboard mostly uses alternating current input power supplying, if designing without inverse plugging, it is understood that there may be zero firewire is reversed
The problem of causing controller to damage, while if be not grounded in complete machine on mainboard, it is possible to cause staff tieing up
Repair or use process in get an electric shock.
Utility model content
Of the existing technology in order to solve the problems, such as, at least one embodiment of the utility model provides a kind of controller
Zero firewire and ground line detection circuit.
In a first aspect, the utility model embodiment provides a kind of zero firewire of controller and ground line detection circuit, comprising:
It is connect with controller zero line side, and inputs the voltage input circuit of predeterminated voltage to the controller zero line side；
It is connect with controller ground terminal, for detecting the first detection circuit of the controller ground terminal electric signal；
It is connect respectively with the controller zero line and the controller ground terminal, for detecting controller zero line and control
Second detection circuit of the voltage difference between device ground terminal processed.
Based on the above-mentioned technical proposal, the utility model embodiment can also make following improvement.
With reference to first aspect, in the first embodiment of first aspect, the voltage input terminal circuit includes:
The voltage input end of input voltage；
Input terminal is connect with voltage input end, and output end is connect with the controller zero line side, by the voltage input end
The voltage of input is converted to the stable-pressure device of predeterminated voltage.
The first embodiment with reference to first aspect, in second of embodiment of first aspect, voltage input end includes:
Voltage end and first capacitor；
One end of the first capacitor is connect with the input terminal of the voltage end and the stable-pressure device respectively；
The other end of the first capacitor is grounded；
The output end of the stable-pressure device includes: cathode output end and cathode output end；
The cathode output end is connect with one end of controller zero line side, the second capacitor respectively；
The other end and the cathode output end of second capacitor are grounded.
Second of embodiment with reference to first aspect, in the third embodiment of first aspect, the voltage end and institute
It states and is additionally provided with current-limiting circuit between the input terminal of stable-pressure device.
With reference to first aspect, in the 4th kind of embodiment of first aspect, first detection circuit includes: the first electricity
Resistance, second resistance and voltage detecting circuit；
The controller ground terminal, first resistor and second resistance are sequentially connected in series, the second resistance ground connection；
The voltage detecting circuit is in parallel with the second resistance, and detects the voltage at the second resistance both ends.
The 4th kind of embodiment with reference to first aspect, in the 5th kind of embodiment of first aspect, the voltage detecting electricity
Road includes: first voltage test side and third capacitor；
One end of the third capacitor is connect with the ground terminal of the second resistance；
The other end of the third capacitor connects with the other end of the first voltage test side and the second resistance respectively
It connects.
The 5th kind of embodiment with reference to first aspect, in the 6th kind of embodiment of first aspect, the second resistance and
Diode is additionally provided in the connection line of the first voltage test side；
The conducting direction of the diode is to be directed toward the first voltage test side by the second resistance.
The 6th kind of embodiment with reference to first aspect, in the 7th kind of embodiment of first aspect, the second resistance and
Current-limiting circuit and clamp circuit are additionally provided in the connection line of first voltage test side.
With reference to first aspect or in first, second, third, fourth, the five, the 6th or the 7th kind of embodiment of first aspect
Any embodiment, in the 8th kind of embodiment of first aspect, second detection circuit include: 3rd resistor, the 4th electricity
Resistance, photo-coupler and conduction detection circuit；
The controller zero line, 3rd resistor, the 4th resistance and controller ground terminal are sequentially connected；
The photophore of the photo-coupler and the 4th resistor coupled in parallel；The conducting direction of the photophore is the control
Device zero line is directed toward the controller ground terminal；
The conduction detection circuit is in parallel with the light-receiving device of the photo-coupler, and detects the conducting feelings of the light-receiving device
Condition.
The 8th kind of embodiment with reference to first aspect, in the 9th kind of embodiment of first aspect, the conduction detection electricity
Road includes: that the second voltage of the voltage of second voltage test side, the 4th capacitor, the second current-limiting circuit and output preset voltage value is defeated
Enter end；
One end of the light-receiving device is connect with the second voltage test side and the second voltage input terminal respectively；
The other end of the light-receiving device is grounded；
One end of 4th capacitor is connect with the second voltage test side, the other end ground connection of the 4th capacitor；
The connecting line of the second voltage input terminal and the second voltage test side is arranged in second current-limiting circuit
On the road.
The above-mentioned technical proposal of the utility model has the advantages that the utility model embodiment is logical compared with prior art
It crosses and inputs predeterminated voltage in controller zero line side, and detect the electric signal and controller zero line and controller of controller ground terminal
Voltage difference between ground terminal, according between the electric signal of controller ground terminal and controller zero line and controller ground terminal
Whether zero firewire of voltage difference confirmation controller connects pair and whether the ground terminal of controller connects ground wire, realizes according to detection electricity
The Different Results of road output quickly confirm the connection of each route of controller, improve the safety of staff's maintenance
Property.
Detailed description of the invention
Fig. 1 is a kind of zero firewire of controller and ground line detection circuit structural schematic diagram provided by the embodiment of the utility model；
Fig. 2 is a kind of zero firewire of controller and ground line detection circuit structural representation that another embodiment of the utility model provides
Figure；
Fig. 3 is a kind of zero firewire of controller and ground line detection circuit structural representation that another embodiment of the utility model provides
Figure one；
Fig. 4 is a kind of zero firewire of controller and ground line detection circuit structural representation that another embodiment of the utility model provides
Figure secondly.
In figure: 1: voltage end；2: first capacitor；3: stable-pressure device；4: controller zero line side；5: the second capacitors；6: control
Device ground terminal；7: first resistor；8: second resistance；9: first voltage test side；10: third capacitor；11: clamp circuit；12: control
Device zero line processed；13: 3rd resistor；14: the four resistance；15: photo-coupler；16: second voltage test side；17: the four capacitors；
18: the second current-limiting circuits；19: second voltage input terminal.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is a part of the embodiment of the utility model, instead of all the embodiments.Based on the reality in the utility model
Apply example, those of ordinary skill in the art's every other embodiment obtained without making creative work, all
Belong to the range of the utility model protection.
As shown in Figure 1, zero firewire of a kind of controller provided by the embodiment of the utility model and ground line detection circuit.
In the present embodiment, detection circuit includes: and connect with controller zero line side 4, and defeated to the controller zero line side 4
The voltage input circuit for entering predeterminated voltage inputs predeterminated voltage to controller zero line side 4 by connecting with controller zero line side 4
The voltage of value, such as five volts of voltages.In a power supply network, the potential of zero line side is zero, if the potential of zero line side is not zero, is needed
Zero line side is grounded, to avoid having voltage on zero curve, causes human electric shock, so controller zero line side 4 must be grounded and instead
Multiple connection, it is ensured that be greatly equipotential volume, so in the controller, the ground terminal of zero line side and controller is connected together
, by adding the voltage of preset voltage value to zero line side, so that the potential of controller ground terminal 6 is consistent with zero line side.
As shown in Fig. 2, for example, in the present embodiment, voltage input circuit includes: the voltage input end of input voltage；It is defeated
Enter end to connect with voltage input end, output end is connect with the controller zero line side 4, the voltage that the voltage input end is inputted
The stable-pressure device 3 of predeterminated voltage is converted to, voltage input end can input the voltage of any voltage value, should by stable-pressure device 3
Voltage is converted to the voltage of preset voltage value, and input controller zero line side 4.
In the present embodiment, voltage input end includes: voltage end 1 and first capacitor 2, one end point of the first capacitor 2
It is not connect with the input terminal of the voltage end 1 and the stable-pressure device 3；The other end of the first capacitor 2 is grounded, and passes through first
Capacitor 2 makes the potential of the input terminal of stable-pressure device 3 consistent with the potential of the voltage end 1.
In the present embodiment, it is additionally provided with current-limiting circuit between the voltage end 1 and the input terminal of the stable-pressure device 3,
Since the voltage of voltage end 1 can be any voltage value, so in the present embodiment, being filled by setting in voltage end 1 and pressure stabilizing
The current-limiting circuit between 3 input terminal is set to avoid overtension, leads to that the electric current in route is excessively high so that route damages, current limliting
Route can be the resistance of series connection in the line, or two resistance in the line of connecting respectively.
The output end of the stable-pressure device 3 includes: cathode output end and cathode output end；The cathode output end respectively with
One end connection of controller zero line side 4, the second capacitor 5；The other end and cathode output end of second capacitor 5 are grounded, surely
The output end of pressure device 3 exports the voltage of preset voltage value by the second capacitor 5 to controller zero line side 4.
In the present embodiment, the can also be avoided in the both ends of first capacitor 2 and a second capacitor 5 in parallel capacitor respectively
One or second capacitor 5 damage, cause mistake be connected so that voltage input circuit fail.
In the present embodiment, detection circuit further include: connect with controller ground terminal 6, connect for detecting the controller
First detection circuit of 6 electric signal of ground terminal detects 6 electric signal of controller ground terminal, controller ground connection by the first detection circuit
Hold 6 it is unearthed when, the electric signal that the first detection circuit detects is the potential of controller zero line side 4, if at this time first detection electricity
Road detects electric signal, then illustrates that controller ground terminal 6 is unearthed, can determine whether controller ground terminal by the first detection circuit
Whether 6 be grounded.
In the present embodiment, detection circuit further include: be grounded respectively with the controller zero line 12 and the controller
6 connection of end, for detecting the second detection circuit of the voltage difference between controller zero line 12 and controller ground terminal 6, passes through
Second detection circuit detects the voltage difference between controller zero line 12 and controller ground terminal 6, if controller ground terminal 6 connects
Ground, the voltage difference that the second detection circuit detects at this time are the potentials of controller zero line 12, then zero firewire of controller connects pair,
If the voltage difference that the second detection circuit detects is zero, zero firewire of controller is reversed.
As shown in Figure 3, Figure 4, the utility model embodiment additionally provides a kind of zero firewire of controller and ground line detection circuit,
Compared with the detection circuit shown in Fig. 1, difference is,
First detection circuit includes: first resistor 7, second resistance 8 and voltage detecting circuit；The controller ground connection
End 6, first resistor 7 and second resistance 8 are sequentially connected in series, and the second resistance 8 is grounded；The voltage detecting circuit and described second
Resistance 8 is in parallel, and detects the voltage at 8 both ends of second resistance, by connecting the between controller ground terminal 6 and ground line
One resistance 7 and second resistance 8, and the voltage value of second resistance 8 is detected, when controller ground terminal 6 connects ground wire, then second is electric
Voltage value is not had in resistance 8, if having voltage value in second resistance 8,6 unearthed line of controller ground terminal can be confirmed.
In the present embodiment, the voltage detecting circuit includes: first voltage test side 9 and third capacitor 10；Described
One end of three capacitors 10 is connect with the ground terminal of the second resistance 8；The other end of the third capacitor 10 is respectively with described
One voltage detection terminal 9 is connected with the other end of the second resistance 8, by third capacitor 10 make first voltage test side 9 with
The potential at the high potential end of second resistance 8 is consistent, since 8 other end of second resistance is grounded, so detecting 8 both ends of second resistance
Voltage value.
In the present embodiment, third capacitor 10 can also be avoided to damage, led in the both ends of third capacitor 10 capacitor in parallel
Cause mistake conducting so that the electrical error that first voltage test side 9 detects.
In the present embodiment, two are additionally provided in the second resistance 8 and the connection line of the first voltage test side 9
Pole pipe；The conducting direction of the diode is to be directed toward the first voltage test side 9 by the second resistance 8, and diode is outside
When adding forward voltage, in the start-up portion of forward characteristic, forward voltage very little is not enough to overcome the blocking of PN junction internal electric field to make
With forward current is almost nil, this section is known as dead zone.This cannot make the forward voltage of diode current flow be known as dead zone electricity
Pressure.After forward voltage is greater than dead zone voltage, PN junction internal electric field is overcome, and diode forward conducting, electric current increases with voltage
And it rises rapidly.In the current range of normal use, the end voltage of diode almost remains unchanged when conducting, this voltage claims
For the forward voltage of diode, so by the way that a diode is arranged between second resistance 8 and first voltage test side 9, if
When the voltage value at 8 both ends of second resistance is less than the dead zone voltage of diode, then diode at this time is not turned on, at this time first voltage
The voltage value that test side 9 detects is zero.
In the present embodiment, current limliting electricity is additionally provided in the second resistance 8 and the connection line of first voltage test side 9
Current-limiting circuit and clamper electricity is arranged to avoid line short from causing current or voltage excessive in road and clamp circuit 11 in the line
Road 11, guarantee route in electric current and voltage value it is not too big, improve line security, current limliting route, which can be, is connected on route
In a resistance, or two resistance in the line of connecting respectively.
In the present embodiment, second detection circuit includes: 3rd resistor 13, the 4th resistance 14,15 and of photo-coupler
Conduction detection circuit；The controller zero line 12,3rd resistor 13, the 4th resistance 14 and controller ground terminal 6 are sequentially connected,
Series connection 3rd resistor 13 and the 4th resistance 14, the photo-coupler 15 between controller zero line 12 and controller ground terminal 6
Photophore it is in parallel with the 4th resistance 14, since photophore is in parallel with the 4th resistance 14, so, photophore voltage is
The voltage at 14 both ends of the 4th resistance, photo-coupler 15 photophore conducting when can shine, moreover, because photophore is luminous
The dead zone voltage of diode, diode similarly can also be applied；The conducting direction of the photophore is the controller zero line
12 are directed toward the controller ground terminal 6；The conduction detection circuit is in parallel with the light-receiving device of the photo-coupler 15, and detects institute
The conducting situation for stating light-receiving device, when photophore conducting shines, light-receiving device can be connected when can receive the light of photophore sending, lead to
It crosses whether conduction detection circuit detection light-receiving device is connected, illustrates that photophore is connected if light-receiving device conducting at this time, at this time controller
Voltage between zero line 12 and controller ground terminal 6 has reached the limit value of photophore conducting.
In the present embodiment, the conduction detection circuit includes: second voltage test side 16, the 4th capacitor 17, second limit
The second voltage input terminal 19 of the voltage of current circuit 18 and output preset voltage value, the voltage that second voltage input terminal 19 exports
Voltage value can be 3.3 volts；One end of the light-receiving device is defeated with the second voltage test side 16 and the second voltage respectively
Enter 19 connection of end；The other end of the light-receiving device is grounded；One end and the second voltage test side 16 of 4th capacitor 17
Connection, the other end ground connection of the 4th capacitor 17；Second current-limiting circuit 18 is arranged in the second voltage input terminal 19
In the connection line of the second voltage test side 16, by above-mentioned connection type, when light-receiving device conducting, second voltage is defeated
Enter 19 ground connection of end, the voltage that second voltage test side 16 detects is zero, and when light-receiving device does not turn on, second voltage test side 16 is examined
The voltage measured is the voltage for the preset voltage value that second voltage input terminal 19 exports, in second voltage test side 16 and the second electricity
Current-limiting circuit is set between pressure input terminal 19, the voltage for avoiding second voltage input terminal 19 from exporting is excessive to cause second voltage to detect
16 damage of end, the second current limliting route can be the resistance of series connection in the line, or two in the line that connect respectively
Resistance.
In the present embodiment, the 4th capacitor 17 can also be avoided to damage, led in the both ends of the 4th capacitor 17 capacitor in parallel
Cause mistake conducting so that the and electrical error that voltage detection terminal detects.
In the present embodiment, carrying out detection simultaneously by the first detection circuit and the second detection circuit can be obtained controller
Zero firewire it is whether reversed, and whether controller ground terminal 6 connects ground wire.
Embodiment, for example, the resistance value of first resistor 7 is the Europe 820K, the resistance value of second resistance 8 is the Europe 5.6K, if electric
The voltage value for pressing input circuit input is 5 volts, and 3rd resistor 13 is the Europe 100K, and the 4th resistance 14 is the Europe 1K, when first voltage is examined
Surveying the voltage that end 9 is detected is 0, and the voltage that second voltage test side 16 is detected is the predeterminated voltage that second voltage input terminal 19 inputs
When the voltage of value, illustrate that controller ground terminal 6 is not connected with ground wire；When the voltage that first voltage test side 9 is detected is 0, second is electric
The voltage for pressing test side 16 to detect is when being zero or square wave, illustrates that zero firewire of controller connects pair, and controller ground terminal 6 connects
Ground wire, when the voltage that first voltage test side 9 is detected is sine wave half-wave, the voltage that second voltage test side 16 is detected is the
When the voltage of the preset voltage value of two voltage input ends 19 input, illustrate that zero firewire of controller is reversed, and controller ground terminal 6 is not
Connect ground wire.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that:
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement；And these are modified or replaceed, various embodiments of the utility model technology that it does not separate the essence of the corresponding technical solution
The spirit and scope of scheme.
Claims (10)
1. a kind of zero firewire of controller and ground line detection circuit characterized by comprising
It is connect with controller zero line side, and inputs the voltage input circuit of predeterminated voltage to the controller zero line side；
It is connect with controller ground terminal, for detecting the first detection circuit of the controller ground terminal electric signal；
It is connect respectively with the controller zero line and the controller ground terminal, for detecting controller zero line and controller
Second detection circuit of the voltage difference between ground terminal.
2. zero firewire of controller according to claim 1 and ground line detection circuit, which is characterized in that the voltage input electricity
Road includes:
The voltage input end of input voltage；
Input terminal is connect with voltage input end, and output end is connect with the controller zero line side, and the voltage input end is inputted
Voltage be converted to the stable-pressure device of predeterminated voltage.
3. zero firewire of controller according to claim 2 and ground line detection circuit, which is characterized in that voltage input end packet
It includes: voltage end and first capacitor；
One end of the first capacitor is connect with the input terminal of the voltage end and the stable-pressure device respectively；
The other end of the first capacitor is grounded；
The output end of the stable-pressure device includes: cathode output end and cathode output end；
The cathode output end is connect with one end of controller zero line side, the second capacitor respectively；
The other end of second capacitor and cathode output end ground connection.
4. zero firewire of controller according to claim 3 and ground line detection circuit, which is characterized in that the voltage end and institute
It states and is additionally provided with current-limiting circuit between the input terminal of stable-pressure device.
5. zero firewire of controller according to claim 1 and ground line detection circuit, which is characterized in that the first detection electricity
Road includes: first resistor, second resistance and voltage detecting circuit；
The controller ground terminal, first resistor and second resistance are sequentially connected in series, the second resistance ground connection；
The voltage detecting circuit is in parallel with the second resistance, and detects the voltage at the second resistance both ends.
6. zero firewire of controller according to claim 5 and ground line detection circuit, which is characterized in that the voltage detecting electricity
Road includes: first voltage test side and third capacitor；
One end of the third capacitor is connect with the ground terminal of the second resistance；
The other end of the third capacitor is connect with the other end of the first voltage test side and the second resistance respectively.
7. zero firewire of controller according to claim 6 and ground line detection circuit, which is characterized in that the second resistance and
Diode is additionally provided in the connection line of the first voltage test side；
The conducting direction of the diode is to be directed toward the first voltage test side by the second resistance.
8. zero firewire of controller according to claim 7 and ground line detection circuit, which is characterized in that the second resistance and
Current-limiting circuit and clamp circuit are additionally provided in the connection line of first voltage test side.
9. any zero firewire of controller and ground line detection circuit according to claim 1~8, which is characterized in that described
Second detection circuit includes: 3rd resistor, the 4th resistance, photo-coupler and conduction detection circuit；
The controller zero line, 3rd resistor, the 4th resistance and controller ground terminal are sequentially connected；
The photophore of the photo-coupler and the 4th resistor coupled in parallel；The conducting direction of the photophore is the controller fire
Line end is directed toward the controller ground terminal；
The conduction detection circuit is in parallel with the light-receiving device of the photo-coupler, and detects the conducting situation of the light-receiving device.
10. zero firewire of controller according to claim 9 and ground line detection circuit, which is characterized in that the conduction detection
Circuit includes: the second voltage of the voltage of second voltage test side, the 4th capacitor, the second current-limiting circuit and output preset voltage value
Input terminal；
One end of the light-receiving device is connect with the second voltage test side and the second voltage input terminal respectively；
The other end of the light-receiving device is grounded；
One end of 4th capacitor is connect with the second voltage test side, the other end ground connection of the 4th capacitor；
Second current-limiting circuit is arranged in the connection line of the second voltage input terminal and the second voltage test side.
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| CN201821901270.XU CN209560015U (en) | 2018-11-16 | 2018-11-16 | A kind of zero firewire of controller and ground line detection circuit |
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| CN201821901270.XU CN209560015U (en) | 2018-11-16 | 2018-11-16 | A kind of zero firewire of controller and ground line detection circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521324A (en) * | 2018-11-16 | 2019-03-26 | 珠海格力电器股份有限公司 | A kind of zero firewire of controller and ground line detection circuit |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521324A (en) * | 2018-11-16 | 2019-03-26 | 珠海格力电器股份有限公司 | A kind of zero firewire of controller and ground line detection circuit |
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