CN107860990B - Self-locker buckle quantity detection system - Google Patents
Self-locker buckle quantity detection system Download PDFInfo
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- CN107860990B CN107860990B CN201710954344.XA CN201710954344A CN107860990B CN 107860990 B CN107860990 B CN 107860990B CN 201710954344 A CN201710954344 A CN 201710954344A CN 107860990 B CN107860990 B CN 107860990B
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- 238000001514 detection method Methods 0.000 title claims abstract description 59
- 239000002184 metal Substances 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 230000003750 conditioning effect Effects 0.000 claims description 13
- 239000003990 capacitor Substances 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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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
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Abstract
The invention provides a detection system for the number of buckles of a self-locking device, which belongs to the technical field of signal acquisition and control, and utilizes a lock hole which is pre-constructed on the self-locking device and an inductance coil which is arranged at the hole wall position of the lock hole, wherein a metal safety buckle is buckled into the lock hole on the self-locking device, a mutual inductance coefficient is changed by adding a metal core into a mutual inductance coil, and the number of the safety buckles buckled into the self-locking device is determined by judging the electric reaction of the mutual inductance coil through circuit detection so as to confirm the safety buckling or safety early warning. The circuit is simple, the cost is low, and the non-contact detection is realized. The safety belt is worn by constructors effectively in cooperation with the personnel detection device, so that the occurrence of the falling accident is reduced, safe and reliable work is ensured, the quality is stable, the detection is accurate, and the safety belt has long service life.
Description
Technical Field
The invention relates to the technical field of signal acquisition and control, in particular to a system for detecting the number of buckles of a self-locking device.
Background
The self-locking device is an individual anti-falling article used by the upper and lower climbing of the high-altitude operators, always freely follows the upper and lower parts of the human body under the human body, and is automatically and rapidly locked once the human body falls down. The safety can be opened and closed, and the assembly and the disassembly can be fast carried out. The device has the advantages of advanced and reasonable structure, quick and stable locking, shorter falling distance, smaller impact force, higher safety coefficient, more convenient up-down climbing and the like. Can be applied to high-altitude operation places such as electric power, petroleum, communication, ships, buildings, outer wall spraying, cleaning and the like. Constructors often refuse to buckle the safety buckle into the self-locking device due to troublesome operation, under emergency, personnel safety cannot be guaranteed, the buckle detector can detect the number of the buckle buckled into the self-locking device, and the safety buckle can be matched with the personnel detection module to realize an alarm function.
At present, no existing product exists in the market, the existing buckle detector utilizes the resonance principle, the circuit structure is relatively complex, and resonance debugging is relatively difficult.
When the safety belt lock catch is normally buckled in the lock hole of the self-locking device, the resonance circuit in the self-locking device works in a resonance state by adjusting the capacitance and inductance in the resonance circuit of the self-locking device, and the resonance frequency is f 0 At this time, the current flowing through the self-locker resonant circuit is larger (as shown in fig. 1), and the voltage across the capacitor C of the self-locker resonant circuit is also larger. When the safety belt lock catch is not buckled in the self-locker lock hole, the inductance value in the self-locker resonant circuit is rapidly reduced, so that the current flowing through the self-locker resonant circuit is rapidly reduced (as shown in fig. 2), and the voltage at the two ends of the capacitor C is rapidly reduced, so that whether the safety belt is normally worn can be judged according to the voltage at the two ends of the capacitor C in the self-locker resonant circuit.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a self-locking device buckle number detection system.
The technical scheme of the invention is realized in the following way, and the number of the safety buckles buckled on the self-locking device is determined by utilizing a lock hole which is pre-configured on the self-locking device and an inductance coil which is configured at the hole wall position of the lock hole, wherein the safety buckles of metal are buckled into the lock hole on the self-locking device, the mutual inductance coefficient is changed by adding a metal core into a mutual inductance coil, and the electric reaction of the mutual inductance coil is detected and judged through a circuit so as to confirm the safety buckling or safety early warning.
A coil bracket is clamped between the two clamping pieces of the self-locking device, more than one number of lock holes are formed in the coil bracket, and two groups of coaxial coils are wound on the wall of each lock hole on the coil bracket: a primary coil and a secondary coil; the primary coil is electrified with low-voltage alternating current, and the secondary coil is connected with the detection circuit; the safety buckle of metal buckles into the lockhole on the self-locking device, and the mutual inductance coefficient can be changed by adding the metal core into the mutual inductance coil, and the quantity of the safety buckle buckled on the self-locking device is determined by detecting and judging the electric reaction of the mutual inductance coil through a circuit, so that the safety buckling or safety early warning is confirmed.
The invention relates to a self-locker buckle number detection system, which adopts the following preferable scheme: a coil bracket is clamped between the two clamping pieces of the self-locking device, more than one number of lock holes are formed in the coil bracket, and two groups of coaxial coils are wound on the wall of each lock hole on the coil bracket: a primary coil and a secondary coil; the primary coil is electrified with low-voltage alternating current, and the secondary coil is connected with the detection circuit; the metal safety buckles are buckled into the lock holes on the self-locking device, the mutual inductance coefficient can be changed by adding the mutual inductance coil into the metal core, the different numbers of safety buckles buckled into the lock holes of the coil support can cause the change of the mutual inductance coefficient, and the number of the safety buckles buckled into the self-locking device is determined by detecting and judging the electric reaction of the secondary coil through the detection circuit so as to confirm the safety buckling or safety early warning;
wherein: the detection circuit is provided with a main controller module, a signal conditioning module and a signal acquisition module which are integrally connected with the detection circuit and used for detecting and judging the electric reaction of the secondary coil;
the main controller module adopts an integrated AD microprocessor singlechip,
the signal conditioning module is used for converting alternating current returned by the secondary coil of the signal acquisition module into a direct current signal which can be acquired by the singlechip, and comprises a signal lifting circuit and a signal amplifying circuit;
the signal acquisition module comprises a coil bracket, a primary coil, a secondary coil and a transformer;
an inductance coil is arranged in a lock hole of the self-locking device, two ends of the inductance coil are connected with a self-locking device resonant circuit module, and the self-locking device resonant circuit module comprises a capacitor for detecting the voltage at two ends and a power supply for the resonant circuit to generate;
the number of buckles buckled in the lock hole of the self-locking device is different, the mutual inductance coefficient between the primary coil and the secondary coil of the signal detection module can be changed, different signals are obtained, and the number of buckles is determined according to the peak value of the signals.
The number of turns of the primary coil and the secondary coil, and the output voltage of the transformer are determined by the size of the coil bracket and the power consumption.
The coil support is manufactured according to the size of the self-locking device.
The self-locking device enables the self-locking device resonant circuit module circuit to work in a resonant state through the initial arrangement of the sizes of the inductance and the capacitance.
A protective shell is additionally arranged on the periphery of the self-locking device resonant circuit module.
The main controller is configured with a power grid voltage detection pin, the output of the transformer is connected with an AD pin of the singlechip, the power grid voltage is collected in real time, and the influence of power grid voltage fluctuation on a detection result is eliminated.
220V alternating current is changed into 3V alternating current through a 220V-to-3V transformer, the 3V alternating current flows into a primary coil of a signal detection module through IN1 and IN2 pins of a P1 socket, is coupled to a secondary coil, flows into a signal conditioning circuit through OUT1 and OUT2 pins of the P1 socket, an electric level raising circuit is formed by R5 and D2, an alternating current signal becomes a signal above zero, namely direct current, flows into an operational amplifier LM358 through a pin OUT1, the first-stage operational amplifier is a voltage follower circuit, and the second-stage operational amplifier, R6, R7 and R8 form an IN-phase proportional operational amplifier circuit, and the signal flows into an AD pin of a singlechip through OUT.
By utilizing the mutual inductance principle, a coil bracket is clamped between two iron sheets of the self-locking device, and two groups of coils are wound on the outer edges of three lock holes on the bracket: the primary coil and the secondary coil are powered by low-voltage alternating current, the safety buckles with different numbers are buckled to cause the change of mutual inductance coefficients, and the peak value of the secondary coil is detected to judge the number of buckles buckled into the self-locking device.
Compared with the prior art, the invention has the following beneficial effects:
the self-locker buckle quantity detection system is simple in circuit, low in cost and capable of achieving non-contact detection. The safety belt is worn by constructors effectively in cooperation with the personnel detection device, so that the occurrence of the falling accident is reduced, safe and reliable work is ensured, the quality is stable, the detection is accurate, and the safety belt has long service life.
The self-locker buckle quantity detection system has the advantages of reasonable design, simple structure, safety, reliability, convenient use, easy maintenance and good popularization and use value.
Drawings
FIG. 1 is a schematic diagram of a seat belt detection in the background art;
FIG. 2 is a schematic diagram of a seat belt detection in the background;
FIG. 3 is a schematic diagram of a master controller module of the present invention;
in fig. 3: U2-STC12C5A60S2 singlechip, C3-10 mu F electrolytic capacitor, C4-30pF ceramic chip capacitor, C5-30pF ceramic chip capacitor, R3-10K resistor, R4-10K resistor and Y1-11.0592MHz crystal oscillator;
FIG. 4 is a schematic diagram of a signal conditioning module and signal acquisition module of the present invention;
in fig. 4: u1-operational amplifier chip LM358, P1-4Pin socket, D2-diode 1N4007, T1-220V to 3V, 5W transformer, R5-1K resistor, R6-30K resistor, R7-10K resistor, R8-10K resistor;
FIG. 5 is a schematic diagram of the self-locking mechanism of the present invention;
FIG. 6 is a schematic diagram of the self-locking mechanism of the present invention;
fig. 7 is a schematic structural view of a coil in a keyhole of a self-locking device according to the invention.
The reference numerals in the drawings denote:
1. primary coil, 2, secondary coil, 3, safety buckle.
Detailed Description
The following describes a number detection system of a self-locking device according to the present invention in detail with reference to the accompanying drawings.
As shown in the attached drawings, the invention provides a self-locking device buckle number detection system, which provides a safety buckle number detection circuit integrated on a self-locking device, and a coil bracket is clamped between two iron sheets of the self-locking device by utilizing the mutual inductance principle, and two groups of coils are wound around the outer edges of three lock holes on the bracket: the primary coil and the secondary coil are powered by low-voltage alternating current, the safety buckles with different numbers are buckled to cause the change of mutual inductance coefficients, and the peak value of the secondary coil is detected to judge the number of buckles buckled into the self-locking device.
The invention discloses a self-locker buckle number detection system which is a signal acquisition module manufactured by utilizing the principle that a mutual inductance coefficient can be changed when a mutual inductance coil is added into an iron core.
The invention discloses a self-locker buckle number detection system which comprises a main controller module, a signal conditioning module and a signal acquisition module.
The master controller adopts an integrated AD microprocessor STC12C5A60S2 series singlechip, is a single-chip microcomputer with single clock/machine cycle (1T) produced by macro-crystal technology, is a new generation 8051 singlechip with high speed/low power consumption/super-strong anti-interference, and has an instruction code which is completely compatible with the traditional 8051 but has a speed of 8-12 times. The special reset circuit for MAX810 is integrated inside, 2 paths of PWM and 8 paths of high-speed 10-bit A/D conversion (250K/S) are adopted, and the motor control and the strong interference occasion are aimed at.
The signal conditioning module is mainly used for converting alternating current returned by the secondary coil of the signal acquisition module into direct current signals which can be acquired by the singlechip, and comprises a signal lifting circuit and a signal amplifying circuit.
The signal acquisition module comprises a coil bracket, a primary coil, a secondary coil and a transformer. The coil support is manufactured according to the size of the self-locking device, the number of turns of the primary coil and the secondary coil, and the output voltage of the transformer are determined by the size of the coil support and the power consumption.
The internal structure of the self-locker is shown in fig. 5, wherein an inductance coil L is arranged in a lock hole of the self-locker, and two ends of the inductance coil are connected with a resonance circuit module of the self-locker. The self-locker resonant circuit module comprises a capacitor C for detecting the voltage of two ends and a power supply for the resonant circuit. When the safety lock is manufactured, the resonant circuit can work in a resonant state by initially setting the sizes of the inductor and the capacitor. The self-locker resonant circuit is shown in fig. 6 after the protective case is added.
According to the principle of a circuit introduced by signal flow, 220V alternating current is changed into 3V alternating current through a 220V-to-3V transformer, the 3V alternating current flows into a primary coil of a signal detection module through IN1 and IN2 pins of a P1 socket, is coupled to a secondary coil, flows into a signal conditioning circuit through OUT1 and OUT2 pins of the P1 socket, forms a level raising circuit, enables an alternating current signal to become a signal above zero, namely direct current, flows into an operational amplifier LM358 through a pin OUT1, the first-stage operational amplifier is a voltage follower circuit, the second-stage operational amplifier and R6, R7 and R8 form an IN-phase proportional operational amplifier circuit, and the signal flows into an AD pin of a singlechip through OUT.
Uout=(1+R6/R8)Uin
The number of buckles buckled in the lock hole of the self-locking device is different, and the mutual inductance coefficient between the primary coil and the secondary coil of the signal detection module can be changed, so that different signals are obtained, and the number of buckles is determined according to the peak value of the signals.
The main controller is provided with a network voltage detection pin, the output of the transformer is connected with an AD pin of the singlechip, the network voltage is collected in real time, and the influence of network voltage fluctuation on a detection result is eliminated.
The invention can adopt a mechanical structure and a travel switch to detect whether the safety buckle is buckled into the lock hole of the self-locking device, but is easier to damage compared with a non-contact technical scheme.
The signal acquisition module is manufactured by utilizing the principle that the mutual inductance is changed when a mutual inductance coil is added into an iron core. The device comprises a coil bracket, a primary coil, a secondary coil and a transformer. A set of primary and secondary coils can detect a plurality of buckling conditions. The key point of the working condition is that the bayonet detector is changed along with the iron core by utilizing the mutual inductance coefficient and is structured to wind two groups of coils along the outer edges of a plurality of lock holes.
Claims (10)
1. The utility model provides a self-locker buckle quantity detecting system which characterized in that: the lock hole pre-constructed on the self-locking device is utilized, the inductance coil is arranged at the hole wall of the lock hole, the metal safety buckle is buckled into the lock hole on the self-locking device, the mutual inductance coefficient can be changed by adding the metal core into the mutual inductance coil, and the number of the safety buckles buckled on the self-locking device is determined by detecting and judging the electric reaction of the mutual inductance coil through a circuit, so that the safety buckling or safety early warning is confirmed.
2. The utility model provides a self-locker buckle quantity detecting system which characterized in that: a coil bracket is clamped between the two clamping pieces of the self-locking device, more than one number of lock holes are formed in the coil bracket, and two groups of coaxial coils are wound on the wall of each lock hole on the coil bracket: a primary coil and a secondary coil; the primary coil is electrified with low-voltage alternating current, and the secondary coil is connected with the detection circuit; the safety buckle of metal buckles into the lockhole on the self-locking device, and the mutual inductance coefficient can be changed by adding the metal core into the mutual inductance coil, and the quantity of the safety buckle buckled on the self-locking device is determined by detecting and judging the electric reaction of the mutual inductance coil through a circuit, so that the safety buckling or safety early warning is confirmed.
3. The utility model provides a self-locker buckle quantity detecting system which characterized in that: a coil bracket is clamped between the two clamping pieces of the self-locking device, more than one number of lock holes are formed in the coil bracket, and two groups of coaxial coils are wound on the wall of each lock hole on the coil bracket: a primary coil and a secondary coil; the primary coil is electrified with low-voltage alternating current, and the secondary coil is connected with the detection circuit; the metal safety buckles are buckled into the lock holes on the self-locking device, the mutual inductance coefficient can be changed by adding the mutual inductance coil into the metal core, the different numbers of safety buckles buckled into the lock holes of the coil support can cause the change of the mutual inductance coefficient, and the number of the safety buckles buckled into the self-locking device is determined by detecting and judging the electric reaction of the secondary coil through the detection circuit so as to confirm the safety buckling or safety early warning;
wherein: the detection circuit is provided with a main controller module, a signal conditioning module and a signal acquisition module which are integrally connected with the detection circuit and used for detecting and judging the electric reaction of the secondary coil;
the main controller module adopts an integrated AD microprocessor singlechip,
the signal conditioning module is used for converting alternating current returned by the secondary coil of the signal acquisition module into a direct current signal which can be acquired by the singlechip, and comprises a signal lifting circuit and a signal amplifying circuit;
the signal acquisition module comprises a coil bracket, a primary coil, a secondary coil and a transformer;
an inductance coil is arranged in a lock hole of the self-locking device, two ends of the inductance coil are connected with a self-locking device resonant circuit module, and the self-locking device resonant circuit module comprises a capacitor for detecting the voltage at two ends and a power supply for the resonant circuit to generate;
the number of buckles buckled in the lock hole of the self-locking device is different, the mutual inductance coefficient between the primary coil and the secondary coil of the signal detection module can be changed, different signals are obtained, and the number of buckles is determined according to the peak value of the signals.
4. A self-locker buckle number detection system as claimed in claim 3, wherein: the number of turns of the primary coil and the secondary coil, and the output voltage of the transformer are determined by the size of the coil bracket and the power consumption.
5. A self-locker buckle number detection system as claimed in claim 3, wherein: the coil support is manufactured according to the size of the self-locking device.
6. A self-locker buckle number detection system as claimed in claim 3, wherein: the self-locking device enables the self-locking device resonant circuit module circuit to work in a resonant state through the initial arrangement of the sizes of the inductance and the capacitance.
7. A self-locker buckle number detection system as claimed in claim 3, wherein: a protective shell is additionally arranged on the periphery of the self-locking device resonant circuit module.
8. A self-locker buckle number detection system as claimed in claim 3, wherein: the main controller is configured with a power grid voltage detection pin, the output of the transformer is connected with an AD pin of the singlechip, the power grid voltage is collected in real time, and the influence of power grid voltage fluctuation on a detection result is eliminated.
9. A self-locker buckle number detection system as claimed in claim 3, wherein:
220V alternating current is changed into 3V alternating current through a 220V-to-3V transformer, the 3V alternating current flows into a primary coil of a signal detection module through IN1 and IN2 pins of a P1 socket, is coupled to a secondary coil, flows into a signal conditioning circuit through OUT1 and OUT2 pins of the P1 socket, an electric level raising circuit is formed by R5 and D2, an alternating current signal becomes a signal above zero, namely direct current, flows into an operational amplifier LM358 through a pin OUT1, the first-stage operational amplifier is a voltage follower circuit, and the second-stage operational amplifier, R6, R7 and R8 form an IN-phase proportional operational amplifier circuit, and the signal flows into an AD pin of a singlechip through OUT.
10. The utility model provides a self-locker buckle quantity detection device which characterized in that: a coil bracket is clamped between the two clamping pieces of the self-locking device, more than one number of lock holes are formed in the coil bracket, and two groups of coaxial coils are wound on the wall of each lock hole on the coil bracket: a primary coil and a secondary coil; the primary coil is electrified with low-voltage alternating current, and the secondary coil is connected with the detection circuit; the metal safety buckles are buckled into the lock holes on the self-locking device, the mutual inductance coefficient can be changed by adding the mutual inductance coil into the metal core, the different numbers of safety buckles buckled into the lock holes of the coil support can cause the change of the mutual inductance coefficient, and the number of the safety buckles buckled into the self-locking device is determined by detecting and judging the electric reaction of the secondary coil through the detection circuit so as to confirm the safety buckling or safety early warning;
wherein: the detection circuit is provided with a main controller module, a signal conditioning module and a signal acquisition module which are integrally connected with the detection circuit and used for detecting and judging the electric reaction of the secondary coil;
the main controller module adopts an integrated AD microprocessor singlechip,
the signal conditioning module is used for converting alternating current returned by the secondary coil of the signal acquisition module into a direct current signal which can be acquired by the singlechip, and comprises a signal lifting circuit and a signal amplifying circuit;
the signal acquisition module comprises a coil bracket, a primary coil, a secondary coil and a transformer;
an inductance coil is arranged in a lock hole of the self-locking device, two ends of the inductance coil are connected with a self-locking device resonant circuit module, and the self-locking device resonant circuit module comprises a capacitor for detecting the voltage at two ends and a power supply for the resonant circuit to generate;
the number of buckles buckled in the lock hole of the self-locker is different, the mutual inductance coefficient between the primary coil and the secondary coil of the signal detection module is changed, different signals are obtained, and the number of buckles is determined according to the peak value of the signals;
the main controller is configured with a power grid voltage detection pin, the output of the transformer is connected with an AD pin of the singlechip, the power grid voltage is collected in real time, and the influence of power grid voltage fluctuation on a detection result is eliminated;
220V alternating current is changed into 3V alternating current through a 220V-to-3V transformer, the 3V alternating current flows into a primary coil of a signal detection module through IN1 and IN2 pins of a P1 socket, is coupled to a secondary coil, flows into a signal conditioning circuit through OUT1 and OUT2 pins of the P1 socket, an electric level raising circuit is formed by R5 and D2, an alternating current signal becomes a signal above zero, namely direct current, flows into an operational amplifier LM358 through a pin OUT1, the first-stage operational amplifier is a voltage follower circuit, and the second-stage operational amplifier, R6, R7 and R8 form an IN-phase proportional operational amplifier circuit, and the signal flows into an AD pin of a singlechip through OUT.
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| CN201710954344.XA CN107860990B (en) | 2017-10-13 | 2017-10-13 | Self-locker buckle quantity detection system |
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| CN201710954344.XA CN107860990B (en) | 2017-10-13 | 2017-10-13 | Self-locker buckle quantity detection system |
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| 用于高空作业的安全绳自锁器设计分析及试验验证;张帅;建筑安全;第1卷(第7期);58-62 * |
| 自锁型预应力锚索的试验研究;刘庆元等;铁道建筑;第2卷(第7期);91-93 * |
| 自锁型预应力锚索设计原理及试验研究;吴志刚;四川建筑;第29卷(第4期);71-75 * |
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| CN107860990A (en) | 2018-03-30 |
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