CN103852683A - Detection circuit and detection method - Google Patents
Detection circuit and detection method Download PDFInfo
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- CN103852683A CN103852683A CN201410084589.8A CN201410084589A CN103852683A CN 103852683 A CN103852683 A CN 103852683A CN 201410084589 A CN201410084589 A CN 201410084589A CN 103852683 A CN103852683 A CN 103852683A
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Abstract
The embodiment of the invention provides a detection circuit and a detection method, and relates to the technical field of electronics. A detection mechanism is provided, it is avoided that misleading signals are generated due to the fact that a device to be detected is disconnected, and then accuracy of a detection result is improved. When the second end of an element to be detected in the detection circuit and the first end of a first voltage dividing module are electrically disconnected, the output detection result shows that the element to be connected is disconnected; when the second end of the element to be detected and the first end of the first voltage dividing module are electrically connected and a detection module does not detect target information, the detection result output by the detection module shows that the element to be detected is connected but the target information is not detected; when the second end of the element to be detected and the first end of the first voltage dividing module are electrically connected and the detection module detects the target information, the detection result output by the detection module shows that the element to be detected is connected and the target information is detected. The detection circuit and method are used for detecting the state of the element to be detected in the circuit.
Description
Technical field
The present invention relates to electronic technology field, relate in particular to a kind of testing circuit and method.
Background technology
In existing electronic equipment, along with the requirement to electric function improves constantly, cause increasing electronic component to be linked into by different types of interface in the circuit of electronic equipment, as various types of detecting elements, comprise various types of sensors, sensitive element, for example cigarette dependent sensor can be linked in the circuit of electronic equipment, sends alarm of fire by the detection to smog, thus fire preventing effectively; In addition also has in electronic equipment all kinds dry contact etc.
But, in the prior art, the circuit of electronic equipment can only operate accordingly after successful connecting electronic component, and cannot be whether in place to electronic component, whether successfully connect and judge, thereby cause the electronic equipment cannot normal operation, or because not the connecting and the operation of execution error of electronic component.
Summary of the invention
Embodiments of the invention provide a kind of testing circuit and method, and a kind of testing mechanism is provided, and have avoided generating misleading signal because equipment to be detected does not connect, thereby have improved the accuracy of testing result.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, provides a kind of testing circuit, and this testing circuit comprises:
The first power supply, element to be detected, the first division module, the second division module, the 3rd division module, detection module and reseting module;
Described the first power supply is used to testing circuit that working power is provided;
Described the first division module, described the second division module and described the 3rd division module are carried out dividing potential drop for voltage that described the first power supply is provided, to provide operating voltage for module to be detected, detection module and reseting module;
Described detection module is for detection of the detection voltage being carried on the first end of described detection module, and according to the voltage range at described detection voltage place, generates corresponding testing result; The voltage that the voltage loading on the second end that described detection voltage is module to be detected generates after described the first division module and described the second division module;
Described reseting module is used for eliminating detection voltage;
The first end of described element to be detected is electrically connected with described the first power supply, and the second end of described element to be detected is electrically connected with the first end of described the first division module;
The second end of described the first division module is electrically connected with the first end of described the second division module, the first end of described reseting module respectively;
The second end of described the second division module is electrically connected with the first end of described detection module and the first end of described the 3rd division module respectively;
The second end ground connection of described the 3rd division module, the second end ground connection of described reseting module;
Wherein, when the second end of described element to be detected is electrically connected disconnection with the first end of described the first division module, the detection voltage that described detection module detects is in first voltage range; When the second end of described element to be detected is electrically connected conducting with the first end of described the first division module, and described detection module is not when target information detected, and the detection voltage that described detection module detects is within the scope of second voltage; When the second end of described element to be detected is electrically connected conducting with the first end of described the first division module, and described detection module is when target information detected, and the detection voltage that described detection module detects is within the scope of tertiary voltage;
If the detection voltage that described detection module detects is in described first voltage range, the testing result of described detection module output is that described element to be detected does not connect; If the detection voltage that described detection module detects is within the scope of described second voltage, the testing result of described detection module output is that described element to be detected connects, but target information do not detected; If the detection voltage that described detection module detects is within the scope of described tertiary voltage, the testing result of described detection module output is that described element to be detected has connected and target information detected;
Wherein, target information comprises current value, magnitude of voltage, smokescope value, light intensity value, temperature value and force value.
In conjunction with first aspect, in the possible implementation of the first, described the first division module comprises the first resistive module, and the first end of described the first resistive module is the first end of described the first division module, and the second end of described the first resistive module is the second end of described the first division module;
In like manner, described the second division module and described the 3rd division module comprise respectively the second resistive module and the 3rd resistive module; Described the second resistive module is identical or different from the connected mode of described the first resistive module in described the first division module with the electric connection mode in described the 3rd division module in described the second division module respectively with described the 3rd resistive module.
In conjunction with first aspect, in the possible implementation of the second, described detection module comprises:
The 4th resistive module and checkout equipment; The voltage that described checkout equipment generates after described the 4th resistive module for detection of described detection voltage, and generate corresponding testing result according to the size of described voltage;
The first end of described the 4th resistive module is the first end of described detection module, and the second end of described the 4th resistive module is electrically connected with the first end of described checkout equipment.
In conjunction with first aspect, in the third possible implementation, described reseting module comprises:
Diode, triode, homing device, the 5th resistive module, the 6th resistive module, the 7th resistive module and second source;
Described diode, for the protection of described reseting module, is damaged described reseting module while preventing electric current reverse transfer; Described homing device, for receiving after reset signal, improves the voltage being carried on described triode; Described in described triode is used for, be carried in after the voltage increase on described triode, the cut-off that reaches capacity, to remove described detection voltage; Described second source is used to described triode that operating voltage is provided;
The forward end of described diode is the first end of described reseting module; The backward end of described diode is electrically connected with the first end of described the 5th resistive module; The second end of described the 5th resistive module is electrically connected with the collector of described triode;
The base stage of described triode is electrically connected with the first end of described the 6th resistive module, the grounded emitter of described triode;
The second end of described the 6th resistive module is electrically connected with the second end of described homing device, described the 7th resistive module respectively;
The second end of described the 3rd resistance is electrically connected with described second source.
The third arbitrary possible implementation in conjunction with first aspect to first aspect, in the 4th kind of possible implementation,
Described the first resistive module, described the second resistive module, described the 3rd resistive module, described the 4th resistive module, described the 5th resistive module, described the 6th resistive module and described the 7th resistive module comprise respectively at least one resistance; The resistance size of described the first resistive module, described the second resistive module, described the 3rd resistive module, described the 4th resistive module, described the 5th resistive module, described the 6th resistive module and described the 7th resistive module is identical or different; Described the first resistive module, described the second resistive module, described the 3rd resistive module, described the 4th resistive module, described the 5th resistive module, described the 6th resistive module are identical or different with the resistance quantity that described the 7th resistive module comprises.
The third arbitrary possible implementation in conjunction with first aspect to first aspect, in the 5th kind of possible implementation,
Described element to be detected comprises sensor, sensitive element or dry contact, and described sensitive element comprises: light activated element, pressure-active element, cigarette photosensitive elements, thermal sensing element;
Described the first power supply and described second source are direct supply, and the size of described the first power supply and described second source is identical or different.
Second aspect, provides a kind of detection method, and the method comprises:
Obtain target information, and according to the corresponding initial voltage value generating of target information; Described target information comprises current value, magnitude of voltage, smokescope value, light intensity value, temperature value and force value;
Obtain the detection voltage of the first end that is carried in detection module; Described detection voltage is the voltage of described initial voltage through described the first division module and described the second division module generation;
Judge the voltage range at described detection voltage place; If described detection voltage is in first voltage range, the testing result of described detection module output is that described element to be detected does not connect; If the voltage that described detection module detects is within the scope of second voltage, the testing result of described detection module output is that described element to be detected connects, but target information do not detected; If the voltage that described detection module detects is within the scope of tertiary voltage, the testing result of described detection module output is that described element to be detected has connected and target information detected;
In conjunction with second aspect, in the possible implementation of the first,
Receive reset instruction, and eliminate described detection voltage according to reset instruction.
The embodiment of the present invention provides a kind of testing circuit and method, when the second end of element to be detected in this testing circuit is electrically connected disconnection with the first end of the first division module, the detection voltage that detection module detects is in first voltage range, and the testing result of output is that element to be detected does not connect; When the second end of element to be detected is electrically connected conducting with the first end of the first division module, and when detection module does not detect target information, the detection voltage that detection module detects is within the scope of second voltage, the testing result of detection module output is that element to be detected connects, but target information do not detected; When the second end of element to be detected is electrically connected conducting with the first end of the first division module, and when detection module detects target information, the detection voltage that detection module detects is within the scope of tertiary voltage, and the testing result of detection module output is that element to be detected has connected and target information detected.Thereby a kind of testing mechanism is provided, has avoided generating misleading signal because equipment to be detected does not connect, thereby improved the accuracy of testing result.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
A kind of testing circuit structural representation that Fig. 1 provides for the embodiment of the present invention;
The another kind of testing circuit structural representation that Fig. 2 provides for the embodiment of the present invention:
The schematic flow sheet of a kind of detection method that Fig. 3 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of testing circuit, and as shown in Figure 1, testing circuit comprises:
The first power supply, element to be detected, the first division module, the second division module, the 3rd division module, detection module and reseting module;
The first end of element to be detected is electrically connected with the first power supply, and the second end of element to be detected is electrically connected with the first end of the first division module;
The second end of the first division module is electrically connected with the first end of the second division module, the first end of reseting module respectively;
The second end of the second division module is electrically connected with the first end of detection module and the first end of the 3rd division module respectively;
The second end ground connection of the 3rd division module, the second end ground connection of reseting module;
Wherein, when the second end of element to be detected is electrically connected disconnection with the first end of the first division module, the voltage that detection module detects is in first voltage range; When the second end of element to be detected is electrically connected conducting with the first end of the first division module, and detection module is not when target information detected, and the voltage that detection module detects is within the scope of second voltage; When the second end of element to be detected is electrically connected conducting with the first end of the first division module, and detection module is when target information detected, and the voltage that detection module detects is within the scope of tertiary voltage;
If the voltage that detection module detects is in first voltage range, the testing result of detection module output is that element to be detected does not connect; If the voltage that detection module detects is within the scope of second voltage, the testing result of detection module output is that element to be detected connects, but target information do not detected; If the voltage that detection module detects is within the scope of tertiary voltage, the testing result of detection module output is that element to be detected has connected and target information detected.
The embodiment of the present invention provides a kind of testing circuit, when the second end of element to be detected in this testing circuit is electrically connected disconnection with the first end of the first division module, the detection voltage that detection module detects is in first voltage range, and the testing result of output is that element to be detected does not connect; When the second end of element to be detected is electrically connected conducting with the first end of the first division module, and when detection module does not detect target information, the detection voltage that detection module detects is within the scope of second voltage, the testing result of detection module output is that element to be detected connects, but target information do not detected; When the second end of element to be detected is electrically connected conducting with the first end of the first division module, and when detection module detects target information, the detection voltage that detection module detects is within the scope of tertiary voltage, and the testing result of detection module output is that element to be detected has connected and target information detected.Thereby a kind of testing mechanism is provided, has avoided generating misleading signal because equipment to be detected does not connect, thereby improved the accuracy of testing result.
In order to make those skilled in the art can more clearly understand the technical scheme that the embodiment of the present invention provides, below by specific embodiment, a kind of observation circuit that the embodiment of the present invention is provided is elaborated.In the present embodiment, for convenience of description, as shown in Figure 1, this testing circuit comprises:
The first power supply, element to be detected, the first division module, the second division module, the 3rd division module, detection module and reseting module;
Concrete, as shown in Figure 2, the first division module comprises the first resistive module, the first resistive module comprises one or more resistance, the connected mode of this one or more resistance is not limited herein, for convenience of description, the present embodiment is taking two resistance in seriess as example, and these two resistance in seriess are expressed as R1 and R2.
In like manner, the second division module and the 3rd division module are respectively as shown in Figure 2.The 3rd resistive module that the second resistive module that the second division module in the present embodiment comprises and the 3rd division module comprise also all comprises one or more resistance, the connected mode of this one or more resistance is not limited herein, in the present embodiment all taking two resistance in seriess as example.For convenience of description, two resistance in seriess in the second resistive module are expressed as R3 and R4, and two resistance in seriess in the 3rd resistive module are expressed as R5 and R6.
In like manner, the 4th resistive module to the seven resistive module also all comprise one or more resistance, and the connected mode of this one or more resistance is not limited herein, in the present embodiment all taking a resistance as example.For convenience of description, the ohmmeter in the 4th resistive module is shown R7, and the ohmmeter in the 5th resistive module is shown R8, and the ohmmeter in the 6th resistive module is shown R9, and the ohmmeter in the 7th resistive module is shown R10.
Concrete, detection module comprises the 4th resistive module and checkout equipment, this checkout equipment can be PC or other equipment.
Reseting module comprises diode, triode, homing device, the 5th resistive module, the 6th resistive module, the 7th resistive module and second source;
Concrete, this diode can be Xiao Te utmost point diode, fast recovery diode, silicone tube, silit etc., and multiple diode forms of series connection etc., this triode can be electronic triode, bipolar transistor, J type field effect transistor, mos field effect transistor, and V-type groove field effect transistor etc.
This reseting module can be PC or other equipment.
Wherein, the first power supply and second source can be the various devices that direct current is provided such as fuel cell, Ni-MH battery, iron cell, lead-acid battery, solar panels, size of current and voltage swing that the first power supply and second source provide set in advance, and are not limited herein.
Concrete connected mode as shown in Figure 2, element to be detected is electrically connected with the first end of resistance R 1 in the first power supply and the first division module respectively, the second end of R1 is electrically connected with the first end of R2, the second end of R2 is electrically connected with the first end of R3 and the forward port P1 of diode respectively, the second end of R3 is electrically connected with the first end of R4, the second end of R4 is electrically connected with the first end of R5 and the first end of R7 respectively, the second end of R7 is electrically connected with checkout equipment, the second end of R5 is electrically connected with the first end of R6, the second end ground connection of R6, the reverse port P2 of diode is electrically connected with the first end of R8, the second end of R8 is electrically connected with the collector c utmost point of triode, the emitter e utmost point ground connection of triode, the base stage b utmost point of triode is electrically connected with the first end of R9, the second end of R9 is electrically connected with first end and the homing device of R10 respectively, the second end of R10 is electrically connected with second source.
The voltage of supposing the first end of R1 is U1, and the voltage of the second end of R2 is U2, and the second terminal voltage of R4 is U3, and U3 is detection voltage.
Wherein, when the second end of element to be detected is electrically connected disconnection with the first end of R1, known according to the relation of electric current, voltage and resistance, the electric current that the first power supply provides cannot pass through equipment to be detected, R2, R3 and R4, the size that is U1 can be the first numerical value, the size of U2 can be second value, the size that detects voltage U 3 can be also third value, the size of third value is 0 in theory, but the error of considering and electric discharge phenomena, when the size that U3 detected is during in first voltage range, the testing result of detection module output is that element to be detected does not connect.
When the second end of element to be detected is electrically connected conducting with the first end of R1, and when detection module does not detect target information, according to electric current, the relation of voltage and resistance is known, the electric current that the first power supply provides is by equipment to be detected, through the dividing potential drop of equipment to be detected, forming size is the U1 of the 4th numerical value, after the dividing potential drop of U1 through R1 and R2, forming size is the U2 of the 5th numerical value, U2 is after the dividing potential drop through R3 and R4, forming size is the detection voltage U 3 of the 6th numerical value, because detection module does not detect target information, voltage on equipment to be detected does not increase, consider error and electric discharge phenomena, so detecting the value of voltage U 3 can fluctuate within the scope of second voltage, when the size that U3 detected is during in second voltage scope, the testing result of detection module output is that element to be detected connects conducting, but target information do not detected.
When the second end of element to be detected is electrically connected conducting with the first end of R1, and when detection module detects target information, according to electric current, the relation of voltage and resistance is known, the electric current that the first power supply provides is by equipment to be detected, through the dividing potential drop of equipment to be detected, forming size is the U1 of the 7th numerical value, after the dividing potential drop of U1 through R1 and R2, forming size is the U2 of the 8th numerical value, U2 is after the dividing potential drop through R3 and R4, forming size is the detection voltage U 3 of the 9th numerical value, because detection module does not detect target information, voltage on equipment to be detected does not increase, consider error and electric discharge phenomena, so detecting the value of voltage U 3 can fluctuate within the scope of second voltage, when the size that U3 detected is during in first voltage range, the testing result of detection module output is that element to be detected connects conducting, and target information detected.
When the testing result of detection module output is that element to be detected connects conducting, and target information detected, need to remove testing result time, homing device provides the electric current I 1 of a default value, this voltage passes through R9, form voltage U 4 at the b of the triode utmost point, be the emitter junction voltage of triode, when the size of U4 is greater than the forward voltage of triode PN junction, and when the size of I1 reaches a certain numerical value, c electrode current no longer increases along with the increase of b electrode current, but less change near certain certain value, at this moment triode loses electric current amplification, voltage between the c utmost point and the e utmost point is very little, between the c utmost point and the e utmost point, it is saturation conduction state, simultaneously, owing to when the testing result of detection module output being element connection conducting to be detected, and when target information detected, the direction of current of diode flows to P2 from P1, now diode is equivalent to wire, be carried in voltage on diode also very little, so, when the resistance of R7 hour, voltage swing between reverse port and the emitter-base bandgap grading of triode that now the size of U2 is diode, be the size that is carried in the voltage on R7, in the time that U2 reduces, can make the U3 after dividing potential drop diminish, be less than tertiary voltage scope, the testing result that causes detection module output is not that element to be detected connects conducting, and target information detected, thereby reach the object of removing testing result.
In the embodiment of the present invention, the size of the voltage of mentioning is predefined, and wherein, it is different numerical value that " first " to " the 9th " in " the first numerical value " to " the 9th numerical value " is only used to distinguish, and not refers in particular to, and is not limited herein.
The embodiment of the present invention provides a kind of testing circuit, when the second end of element to be detected in this testing circuit is electrically connected disconnection with the first end of the first division module, the detection voltage that detection module detects is in first voltage range, and the testing result of output is that element to be detected does not connect; When the second end of element to be detected is electrically connected conducting with the first end of the first division module, and when detection module does not detect target information, the detection voltage that detection module detects is within the scope of second voltage, the testing result of detection module output is that element to be detected connects, but target information do not detected; When the second end of element to be detected is electrically connected conducting with the first end of the first division module, and when detection module detects target information, the detection voltage that detection module detects is within the scope of tertiary voltage, and the testing result of detection module output is that element to be detected has connected and target information detected.Thereby a kind of testing mechanism is provided, has avoided generating misleading signal because equipment to be detected does not connect, thereby improved the accuracy of testing result.
The embodiment of the present invention also provides a kind of detection method, and as shown in Figure 3, the method comprises:
101, obtain target information, and according to the corresponding initial voltage value generating of target information.
102, obtain the detection voltage of the first end that is carried in detection module; Detecting voltage is the voltage of initial voltage through the first division module and the generation of the second division module.
103, judgement detects the voltage range at voltage place; If the detection voltage that detection module detects, in first voltage range, carries out 104; If the detection voltage that detection module detects, within the scope of second voltage, carries out 105; If the detection voltage that detection module detects, within the scope of tertiary voltage, carries out 106;
104, the testing result of detection module output is that element to be detected does not connect.
105, the testing result of detection module output is that element to be detected connects, but target information do not detected.
106, the testing result of detection module output is that element to be detected has connected and target information detected.
Wherein, target information comprises current value, magnitude of voltage, smokescope value, light intensity value, temperature value and force value;
The embodiment of the present invention provides a kind of detection method, when the second end of element to be detected in this testing circuit is electrically connected disconnection with the first end of the first division module, the detection voltage that detection module detects is in first voltage range, and the testing result of output is that element to be detected does not connect; When the second end of element to be detected is electrically connected conducting with the first end of the first division module, and when detection module does not detect target information, the detection voltage that detection module detects is within the scope of second voltage, the testing result of detection module output is that element to be detected connects, but target information do not detected; When the second end of element to be detected is electrically connected conducting with the first end of the first division module, and when detection module detects target information, the detection voltage that detection module detects is within the scope of tertiary voltage, and the testing result of detection module output is that element to be detected has connected and target information detected.Thereby a kind of testing mechanism is provided, has avoided generating misleading signal because equipment to be detected does not connect, thereby improved the accuracy of testing result.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can complete by the relevant hardware of programmed instruction, aforesaid program can be stored in a computer read/write memory medium, this program, in the time carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: USB flash disk, portable hard drive, ROM (read-only memory) (Read-Only Memory, be called for short ROM), the various media that can be program code stored such as random access memory (Random Access Memory, be called for short RAM), magnetic disc or CD.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (8)
1. a testing circuit, is characterized in that, described testing circuit comprises:
The first power supply, element to be detected, the first division module, the second division module, the 3rd division module, detection module and reseting module;
Described the first power supply is used to testing circuit that working power is provided;
Described the first division module, described the second division module and described the 3rd division module are carried out dividing potential drop for voltage that described the first power supply is provided, to provide operating voltage for module to be detected, detection module and reseting module;
Described detection module is for detection of the detection voltage being carried on the first end of described detection module, and according to the voltage range at described detection voltage place, generates corresponding testing result; The voltage that the voltage loading on the second end that described detection voltage is module to be detected generates after described the first division module and described the second division module;
Described reseting module is used for eliminating detection voltage;
The first end of described element to be detected is electrically connected with described the first power supply, and the second end of described element to be detected is electrically connected with the first end of described the first division module;
The second end of described the first division module is electrically connected with the first end of described the second division module, the first end of described reseting module respectively;
The second end of described the second division module is electrically connected with the first end of described detection module and the first end of described the 3rd division module respectively;
The second end ground connection of described the 3rd division module, the second end ground connection of described reseting module;
Wherein, when the second end of described element to be detected is electrically connected disconnection with the first end of described the first division module, described detection voltage is in first voltage range; When the second end of described element to be detected is electrically connected conducting with the first end of described the first division module, and described detection module is not when target information detected, and described detection voltage is within the scope of second voltage; When the second end of described element to be detected is electrically connected conducting with the first end of described the first division module, and described detection module is when target information detected, and described detection voltage is within the scope of tertiary voltage;
If the detection voltage that described detection module detects is in described first voltage range, the testing result of described detection module output is that described element to be detected does not connect; If the detection voltage that described detection module detects is within the scope of described second voltage, the testing result of described detection module output is that described element to be detected connects, but target information do not detected; If the detection voltage that described detection module detects is within the scope of described tertiary voltage, the testing result of described detection module output is that described element to be detected has connected and target information detected;
Wherein, target information comprises current value, magnitude of voltage, smokescope value, light intensity value, temperature value and force value.
2. circuit according to claim 1, is characterized in that,
Described the first division module comprises the first resistive module, and the first end of described the first resistive module is the first end of described the first division module, and the second end of described the first resistive module is the second end of described the first division module;
Described the second division module and described the 3rd division module comprise respectively the second resistive module and the 3rd resistive module; Described the second resistive module is identical or different from the connected mode of described the first resistive module in described the first division module with the electric connection mode in described the 3rd division module in described the second division module respectively with described the 3rd resistive module.
3. circuit according to claim 1, is characterized in that, described detection module comprises:
The 4th resistive module and checkout equipment; The voltage that described checkout equipment generates after described the 4th resistive module for detection of described detection voltage, and generate corresponding testing result according to the size of described voltage;
The first end of described the 4th resistive module is the first end of described detection module, and the second end of described the 4th resistive module is electrically connected with the first end of described checkout equipment.
4. circuit according to claim 1, is characterized in that, described reseting module comprises:
Diode, triode, homing device, the 5th resistive module, the 6th resistive module, the 7th resistive module and second source;
Described diode, for the protection of described reseting module, is damaged described reseting module while preventing electric current reverse transfer; Described homing device, for receiving after reset signal, improves the voltage being carried on described triode; Described in described triode is used for, be carried in after the voltage increase on described triode, the cut-off that reaches capacity, to remove described detection voltage; Described second source is used to described triode that operating voltage is provided;
The forward end of described diode is the first end of described reseting module; The backward end of described diode is electrically connected with the first end of described the 5th resistive module; The second end of described the 5th resistive module is electrically connected with the collector of described triode;
The base stage of described triode is electrically connected with the first end of described the 6th resistive module, the grounded emitter of described triode;
The second end of described the 6th resistive module is electrically connected with the second end of described homing device, described the 7th resistive module respectively;
The second end of described the 3rd resistance is electrically connected with described second source.
5. according to the arbitrary described circuit of claim 1 to 4, it is characterized in that,
Described the first resistive module, described the second resistive module, described the 3rd resistive module, described the 4th resistive module, described the 5th resistive module, described the 6th resistive module and described the 7th resistive module comprise respectively at least one resistance; The resistance size of described the first resistive module, described the second resistive module, described the 3rd resistive module, described the 4th resistive module, described the 5th resistive module, described the 6th resistive module and described the 7th resistive module is identical or different; Described the first resistive module, described the second resistive module, described the 3rd resistive module, described the 4th resistive module, described the 5th resistive module, described the 6th resistive module are identical or different with the resistance quantity that described the 7th resistive module comprises.
6. according to claim 1 and 4 arbitrary described circuit, it is characterized in that,
Described element to be detected comprises sensor, sensitive element or dry contact, and described sensitive element comprises: light activated element, pressure-active element, cigarette photosensitive elements, thermal sensing element;
Described the first power supply and described second source are direct supply, and the size of described the first power supply and described second source is identical or different.
7. a detection method, is characterized in that, described method comprises:
Obtain target information, and according to the corresponding initial voltage value generating of target information; Described target information comprises current value, magnitude of voltage, smokescope value, light intensity value, temperature value and force value;
Obtain the detection voltage of the first end that is carried in detection module; Described detection voltage is the voltage of described initial voltage through described the first division module and described the second division module generation;
Judge the voltage range at described detection voltage place; If described detection voltage is in first voltage range, the testing result of described detection module output is that described element to be detected does not connect; If the voltage that described detection module detects is within the scope of second voltage, the testing result of described detection module output is that described element to be detected connects, but target information do not detected; If the voltage that described detection module detects is within the scope of tertiary voltage, the testing result of described detection module output is that described element to be detected has connected and target information detected.
8. detection method according to claim 7, is characterized in that, described method also comprises:
Receive reset instruction, and eliminate described detection voltage according to reset instruction.
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| CN103852683B (en) | 2017-03-15 |
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