CN214793611U - Pin shaft sensor calibration instrument - Google Patents
Pin shaft sensor calibration instrument Download PDFInfo
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- CN214793611U CN214793611U CN202120419819.7U CN202120419819U CN214793611U CN 214793611 U CN214793611 U CN 214793611U CN 202120419819 U CN202120419819 U CN 202120419819U CN 214793611 U CN214793611 U CN 214793611U
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Abstract
The utility model discloses a pin shaft sensor calibration instrument, which comprises a single chip microcomputer, a pin shaft sensor, a tension sensor, a first signal conversion circuit and a second signal conversion circuit, wherein one input end of the single chip microcomputer is connected with the output end of the pin shaft sensor through the first signal conversion circuit, and the other input end of the single chip microcomputer is connected with the output end of the tension sensor through the second signal conversion circuit; the calibrator detects the detection tension value of the pin shaft sensor, and improves the use safety of the pin shaft sensor.
Description
Technical Field
The utility model relates to a round pin axle sensor detects technical field, especially relates to a round pin axle sensor calibration instrument.
Background
It ties fixedly to equip magazine filling car or transport vechicle to box magazine adoption bolt tight area, and round pin axle sensor combination is used for detecting the locking state of each magazine respectively, if damage or the sampling deviation leads to bolt tight area not hard up the condition under detect for locking state because of round pin axle sensor, jolt through road transport or road surface then probably lead to bolt tight area not hard up, the magazine drops, brings the potential safety hazard, also do not damage the mechanism that detects to round pin axle sensor in the tradition, cause certain use potential safety hazard.
SUMMERY OF THE UTILITY MODEL
Based on the technical problem that the background art exists, the utility model provides a round pin axle sensor calibration appearance detects the detection pulling force value of round pin axle sensor, has improved round pin axle sensor's safety in utilization.
The utility model provides a pin roll sensor calibration instrument, including singlechip, round pin roll sensor, force sensor, first signal conversion circuit and second signal conversion circuit, one of them input of singlechip is connected with the output of round pin roll sensor through first signal conversion circuit, and another input of singlechip is connected with force sensor's output through second signal conversion circuit.
Further, the first signal conversion circuit comprises a sampling resistor R9, a sampling resistor R10 and an operational amplifier N3A, wherein one end of the sampling resistor R9 connected with the sampling resistor R10 in parallel is connected to the output end of the pin sensor, the other end of the sampling resistor R9 is grounded, the positive input end of the operational amplifier N3A is connected to the output end of the pin sensor, and the output end of the operational amplifier N3A is connected with the negative input end to form a voltage follower circuit which is connected to an AD sampling interface of the single chip microcomputer.
Further, the first signal conversion circuit further comprises a voltage stabilizing diode V3, a protection resistor R2 and a capacitor C17, wherein the anode of the voltage stabilizing diode V3 is grounded, the cathode of the voltage stabilizing diode V3 is connected to the anode input end of the operational amplifier N3A, one end of the protection resistor R2 is connected to the output end of the voltage follower circuit, the other end of the protection resistor R2 is connected to the AD sampling interface of the single chip microcomputer, one end of the capacitor C17 is grounded, and the other end of the capacitor C17 is connected to the AD sampling interface of the single chip microcomputer.
Further, the second signal conversion circuit comprises an operational amplifier N11A and an operational amplifier N11B, wherein a positive input end of the operational amplifier N11A is connected to an output end of the tension sensor through a resistor R22, a negative input end of the operational amplifier N11A is connected to an output end of the tension sensor through a resistor R23, a negative input end of the operational amplifier N11A is connected with the output end thereof and then connected to a positive input end of the operational amplifier N11B, and a negative input end of the operational amplifier N11B is connected with the output end thereof and then connected to an AD sampling interface of the single chip microcomputer.
Further, still include the power supply circuit who is used for supplying power to the singlechip.
Further, the power supply circuit comprises a power supply voltage stabilizing chip U1 and a power supply voltage stabilizing chip U2, the input end of the power supply voltage stabilizing chip U1 is externally connected with 24V, the output end of the power supply voltage stabilizing chip U2 is connected with the input end of the power supply voltage stabilizing chip U2, and the output end of the power supply voltage stabilizing chip U2 is connected with a power supply port of the single chip microcomputer.
Further, the power supply circuit further comprises a diode V2 and a common-mode inductor L1, wherein the anode of the diode V2 is grounded, and the cathode of the diode V2 is connected to the 1 pin terminal of the common-mode inductor L1, and the 3 pin of the common-mode inductor L1 is grounded, and the 4 pin of the common-mode inductor L1 is connected to the input terminal of the power supply voltage stabilization chip U1.
Further, the calibrator still includes bee calling organ and the bee calling organ interface circuit who is used for driving bee calling organ work, bee calling organ interface circuit is including keeping apart opto-coupler U8 and triode Q3, keeps apart opto-coupler U8's preceding stage 1 pin and is connected to power supply circuit's output, preceding stage 2 pin is connected to the output of singlechip, the 3 pins in the back level of keeping apart opto-coupler U8 are connected to triode 3's base, keep apart opto-coupler U8 4 pins in the back level and connect 24V all the way, another way is connected to bee calling organ's negative pole, bee calling organ's anodal 24V of connecting.
Furthermore, the calibrator further comprises a transceiver circuit, and the single chip microcomputer is connected with the display control device through the transceiver circuit.
Furthermore, the calibration instrument also comprises a key and a key detection circuit for detecting the state of the key switch.
The utility model provides a pair of round pin axle sensor calibration instrument's advantage lies in: the utility model discloses a pin roll sensor calibration instrument that provides in the structure, first signal conversion circuit, second signal conversion circuit, singlechip realize the off-line detection of pin roll sensor, force sensor, also can realize the on-line detection of pin roll sensor, force sensor through additionally adding receiving and generating circuit, compare with preset tension value according to given tension value, obtain force sensor's abnormal condition, compare with given tension value according to detecting tension value, obtain the abnormal condition of pin roll sensor; meanwhile, information can be displayed through the liquid crystal screen under both off-line detection and on-line detection, and the man-machine interaction is good; through key centralized control, easy operation, convenience are convenient for realize the adjustment to given pulling force value.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a first signal conversion circuit;
FIG. 3 is a schematic diagram of a second signal conversion circuit;
FIG. 4 is a schematic diagram of a power supply circuit;
FIG. 5 is a schematic structural diagram of a buzzer interface circuit;
FIG. 6 is a schematic diagram of a transceiver circuit;
FIG. 7 is a schematic diagram of a key detection circuit;
the system comprises a single chip microcomputer 1, a pin shaft sensor 2, a tension sensor 3, a first signal conversion circuit 4, a second signal conversion circuit 5, a power circuit 6, a buzzer interface circuit 7, a transceiver circuit 8 and a key 9.
Detailed Description
The technical solutions of the present invention are explained in detail below with reference to specific embodiments, and many specific details are set forth in the following description to provide a thorough understanding of the present invention. The present invention can be embodied in many other forms than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention.
As shown in fig. 1, the utility model provides a round pin axle sensor calibration appearance, including singlechip 1, round pin axle sensor 2, force sensor 3, first signal conversion circuit 4 and second signal conversion circuit 5, one of them input of singlechip 1 is connected with the output of round pin axle sensor 2 through first signal conversion circuit 4, and another input of singlechip 1 passes through second signal conversion circuit 5 and is connected with force sensor 3's output.
The single chip microcomputer can adopt a microcontroller of an S9S12G48AMLF model, the tension value of the tension sensor 3 is used as a given tension value, the detection tension value of the pin shaft sensor 2 is obtained, whether the pin shaft sensor 2 is normal at present is determined by comparing the detection tension value with the given tension value, the situation that the bolt tightening belt is not tight due to damage of the pin shaft sensor or sampling deviation is avoided being detected as a locking state, the bolt tightening belt is not tight probably due to road transportation or road surface bumping, the magazine is dropped, potential safety hazards are brought, and the safety of the pin shaft sensor 2 in the using process is improved.
The single chip microcomputer 1, the first signal conversion circuit 4 and the second signal conversion circuit 5 can be powered by the power circuit 6, the power circuit 6 comprises a power voltage stabilizing chip U1 and a power voltage stabilizing chip U2, the power voltage stabilizing chip U1 is used for reducing the voltage of 24V to 12V, the power voltage stabilizing chip U2 is used for reducing the voltage of 12V to 5V, and finally 5V power supply for the first signal conversion circuit 4 and the second signal conversion circuit 5 of the single chip microcomputer 1 is achieved, the input end of the power voltage stabilizing chip U1 is externally connected with 24V, the output end of the power voltage stabilizing chip U1 is connected with the input end of the power voltage stabilizing chip U2, and the output end of the power voltage stabilizing chip U2 is connected with the power supply port of the single chip microcomputer 1; the power supply circuit 6 further comprises a diode V2 and a common-mode inductor L1, wherein the anode of the diode V2 is grounded, the cathode of the diode V2 is connected to the 1 pin terminal of the common-mode inductor L1, and the 3 pin of the common-mode inductor L1 is grounded, and the 4 pin of the common-mode inductor L1 is connected to the input terminal of the power supply voltage stabilization chip U1. The diode V2 is arranged to prevent overvoltage breakdown, so as to protect the circuit safety and stability of the whole power supply circuit 6; the common mode signal may be filtered by the setting of the common mode inductance L1.
The power circuit 6 is also provided with a plurality of capacitor components, one end of the capacitor C4 is connected to the input end of the power supply voltage stabilizing chip U1 after being connected with the capacitor C7 in parallel, the other end of the capacitor C5 is grounded after being connected with the capacitor C10, the capacitor C6 and the capacitor C8 are connected with the capacitor C8 in parallel, one end of the capacitor C5 is connected to the input end of the power supply voltage stabilizing chip U2 after being connected with the capacitor C5 in parallel, the other end of the capacitor C9 is grounded after being connected with the capacitor C11 in parallel, and one end of the capacitor C9 is connected to the output end of the power supply voltage stabilizing chip U2, and the other end of the capacitor C3624 is grounded. The arrangement of a plurality of capacitor assemblies plays the effect of energy storage, filtering, improves whole power supply circuit 6's voltage output stability.
In this embodiment, the first signal conversion circuit 4 includes a sampling resistor R9, a sampling resistor R10, and an operational amplifier N3A, one end of the sampling resistor R9 connected in parallel with the sampling resistor R10 is connected to the output end of the pin sensor 2, the other end is grounded, the positive input end of the operational amplifier N3A is connected to the output end of the pin sensor 2, and the output end of the operational amplifier N3A is connected to the negative input end to form a voltage follower circuit, which is connected to the AD sampling interface of the single chip microcomputer 1. The first signal conversion circuit 4 further comprises a voltage stabilizing diode V3, a protection resistor R2 and a capacitor C17, wherein the anode of the voltage stabilizing diode V3 is grounded, the cathode of the voltage stabilizing diode V3 is connected to the anode input end of the operational amplifier N3A, one end of the protection resistor R2 is connected to the output end of the voltage follower circuit, the other end of the protection resistor R2 is connected to the AD sampling interface of the single chip microcomputer 1, and one end of the capacitor C17 is grounded, and the other end of the capacitor C17 is connected to the AD sampling interface of the single chip microcomputer 1.
Output signals 4 mA-20 mA of the pin shaft sensor 2 are converted into voltage signals of 2V-4V through a sampling resistor R9 and a sampling resistor R10 and sent to an AD sampling interface of the single chip microcomputer 1, the pin shaft sensor 2 is sampled through the single chip microcomputer 1, the pulling force value is compared with a given pulling force value of the collected pulling force sensor 3 and judged, whether locking is determined, specifically, when the pulling force value is detected to be in a floating range of the given pulling force value, locking is represented, and otherwise, locking is represented.
The second signal conversion circuit 5 comprises an operational amplifier N11A and an operational amplifier N11B, wherein the positive input end of the operational amplifier N11A is connected to the output end of the tension sensor 3 through a resistor R22, the negative input end of the operational amplifier N11 is connected to the output end of the tension sensor 3 through a resistor R23, the negative input end of the operational amplifier N11A is connected with the output end thereof and then connected to the positive input end of the operational amplifier N11B, and the negative input end of the operational amplifier N11B is connected with the output end thereof and then connected to the AD sampling interface of the single chip microcomputer 1.
The operational amplifier N11A, the resistor R22, the resistor R23, the resistor R44 and the resistor R45 form a differential amplification circuit, and the amplification factor is 100 times; the operational amplifier N11B, the resistor R42 and the resistor R43 form a second-stage amplifying circuit, the amplification factor is 3 times, and the output end of the operational amplifier N11B is connected with the protection resistor R21 in series and then is connected to the AD sampling interface of the singlechip 1; therefore, the voltage value output by the tension sensor 3 is amplified through the second signal conversion circuit 5 and is sent to the AD sampling interface of the single chip microcomputer 1, the data acquisition of the tension sensor 3 by the single chip microcomputer 1 is realized, and then the single chip microcomputer 1 calculates the value of the given tension and compares the value with the detected tension value.
In this embodiment, the calibrator still includes bee calling organ and the bee calling organ interface circuit 7 that is used for driving bee calling organ work, bee calling organ interface circuit 7 is including keeping apart opto-coupler U8 and triode Q3, keeps apart the output that the preceding stage 1 pin of opto-coupler U8 is connected to power supply circuit 6, preceding stage 2 pin is connected to singlechip 1's output, keep apart 3 pins in the back level of opto-coupler U8 and be connected to triode 3's base, keep apart that opto-coupler U8 4 pins in the back level are external 24V all the way, another way is connected to the negative pole of bee calling organ, 24V is connected to the positive pole of bee calling organ.
A front stage 2 pin of the isolation optocoupler U8 is connected with a BEE interface, an IO interface of the singlechip 1 is connected with the BEE interface, a collector electrode of the triode Q3 is connected with the BEEN-interface, and a cathode end of the buzzer is connected to the BEEN-interface. After the triode Q3 is conducted, the BEEN-interface is grounded, the negative end of the buzzer is at a low level, and the positive end of the buzzer is at a high level of 24V, so that the buzzer gives out a sound to give an alarm.
The buzzer interface circuit 7 is mainly used for giving sound alarm to the display control device. The alarm frequency of the buzzer can be controlled through the IO port of the single chip microcomputer 1, and the alarm sound state of the buzzer is adjusted. The buzzer can be a QS type DC24V stainless steel buzzer.
In this embodiment, the calibration instrument further includes a transceiver circuit 8, and the single chip microcomputer 1 is connected with the display control device through the transceiver circuit 8; the calibrator further comprises a key 9 and a key detection circuit for detecting the state of the key switch. For the transceiver circuit 8, if the communication is abnormal, a communication fault is prompted on the communication abnormal interface of the liquid crystal display, and if the communication is not abnormal, the transceiver circuit normally enters into operation.
As shown in fig. 7, the key detection circuit includes a resistor R13, a resistor R14, a resistor R15, a capacitor C57, a capacitor C58 and a capacitor C59, where one end of the resistor R13 connected in series with the capacitor C57 is externally connected with a pull-up voltage of 3.3V, and the other end is grounded, one end of the resistor R14 connected in series with the capacitor C58 is externally connected with a pull-up voltage of 3.3V, and the other end is grounded, one end of the resistor R15 connected in series with the capacitor C59 is externally connected with a pull-up voltage of 3.3V, and the other end is grounded, an IO interface of the single chip is connected to a node between the resistor R13 and the capacitor C57, an IO interface of the single chip is connected to a node between the resistor R14 and the capacitor C58, and an IO interface of the single chip is connected to a node between the resistor R15 and the capacitor C59. The LEFT is a LEFT key, the parameter setting is increased, and the cursor moves LEFT; "OK" is "confirm" key, is used for choosing and confirming; the RIGHT key is used for setting parameters to be reduced and moving a cursor to the RIGHT.
The keys 9 may be provided with keys such as "LEFT", "RIGHT", "determine", and the like, where the "LEFT" key is used to increase a given tension value, the "RIGHT" key is used to decrease the given tension value, and the "OK" key is used to determine the key by the motor when the given tension value is adjusted, so as to determine the modification.
The pin shaft sensor calibrator has two use modes: an offline mode and an online mode. The off-line mode and the on-line mode are based on whether the detection tension value of the pin sensor 2 and the given tension value of the tension sensor 3 are obtained through the transceiver circuit 8, and are in a wireless mode when passing through the transceiver circuit 8 and in an off-line mode when not passing through the transceiver circuit 8.
In the off-line mode: the pin shaft sensor calibration instrument samples AD values converted by a pin shaft sensor 2 and a tension sensor 3 in an off-line mode, collected analog quantity signals are converted into digital quantity signals through a first signal conversion circuit 4 and a second signal conversion circuit 5, a given tension value is compared with a preset tension value, whether the given tension value is within an allowable error range of the preset tension value or not is judged, if not, the working state of the tension sensor is abnormal, the tension sensor needs to be replaced, if yes, a detected tension value is compared with the given tension value, and whether the pin shaft sensor is normal or not is judged by comparing a difference value between the detected tension value and the given tension value. In an off-line mode, the pin sensor calibration instrument is directly connected to the equipment to be tested, and the detection tension value and the given tension value are obtained in a wired mode.
In the online mode: and in the online mode, the tension value of the tension sensor is detected, and the detection tension value corresponding to each pin shaft sensor 2 and the given detection value corresponding to the tension sensor 3 which are uploaded by the locking monitoring device are received through the transceiving circuit 8. The comparison process of the detected pull force value and the given detection value is similar to that in an off-line mode, and in the on-line mode, the corresponding detected pull force value, the given detection value and the state can be displayed through a liquid crystal screen.
For example: when the given detection value is smaller than the set given value (80kgf), the liquid crystal display prompts that the pulling force needs to be increased, and the given pulling force value is increased through an increasing key; when the given detection value is larger than the set given value (90kgf), the liquid crystal display prompts that the pulling force needs to be increased, and the given pulling force value is reduced by the reduction key; when the given detection value is larger than 115kgf, the liquid crystal display prompts 'warning', the buzzer sounds and manual checking; when the error of the detected tension value meets the error range (80 kgf-90 kgf), the interface prompts to be qualified, and when the error range is not met, the display screen prompts to be unqualified.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides a round pin axle sensor calibrator, its characterized in that, includes singlechip (1), round pin axle sensor (2), force sensor (3), first signal conversion circuit (4) and second signal conversion circuit (5), and one of them input of singlechip (1) is connected with the output of round pin axle sensor (2) through first signal conversion circuit (4), and another input of singlechip (1) is connected with the output of force sensor (3) through second signal conversion circuit (5).
2. The pin sensor calibrator according to claim 1, wherein the first signal conversion circuit (4) comprises a sampling resistor R9, a sampling resistor R10 and an operational amplifier N3A, wherein one end of the sampling resistor R9 and the sampling resistor R10, which are connected in parallel, is connected to the output end of the pin sensor (2), the other end of the sampling resistor R10 and the sampling resistor R10 are grounded, the positive input end of the operational amplifier N3A is connected to the output end of the pin sensor (2), and the output end of the operational amplifier N3A is connected to the negative input end to form a voltage follower circuit, which is connected to the AD sampling interface of the single chip microcomputer (1).
3. The pin sensor calibrator according to claim 2, wherein the first signal conversion circuit (4) further comprises a zener diode V3, a protection resistor R2, and a capacitor C17, wherein an anode of the zener diode V3 is grounded, a cathode of the zener diode V3 is connected to an anode input terminal of the operational amplifier N3A, one end of the protection resistor R2 is connected to an output terminal of the voltage follower circuit, and the other end of the protection resistor R2 is connected to an AD sampling interface of the single chip microcomputer (1), and one end of the capacitor C17 is grounded, and the other end of the capacitor C17 is connected to the AD sampling interface of the single chip microcomputer (1).
4. The pin sensor calibrator according to claim 1, wherein the second signal conversion circuit (5) comprises an operational amplifier N11A and an operational amplifier N11B, a positive input terminal of the operational amplifier N11A is connected to the output terminal of the strain sensor (3) through a resistor R22, a negative input terminal of the operational amplifier N11A is connected to the output terminal of the strain sensor (3) through a resistor R23, a negative input terminal of the operational amplifier N11A is connected to a positive input terminal of the operational amplifier N11B after being connected to the output terminal thereof, and a negative input terminal of the operational amplifier N11B is connected to the AD sampling interface of the single chip microcomputer (1) after being connected to the output terminal thereof.
5. The calibration instrument for the pin sensor according to any one of claims 1 to 4, further comprising a power circuit (6) for supplying power to the single chip microcomputer (1).
6. The pin sensor calibrator according to claim 5, wherein the power circuit (6) comprises a power supply voltage stabilization chip U1 and a power supply voltage stabilization chip U2, the input end of the power supply voltage stabilization chip U1 is externally connected with 24V, the output end of the power supply voltage stabilization chip U1 is connected with the input end of the power supply voltage stabilization chip U2, and the output end of the power supply voltage stabilization chip U2 is connected with the power supply port of the single chip microcomputer (1).
7. The pin sensor calibrator according to claim 6, wherein the power circuit (6) further comprises a diode V2 and a common-mode inductor L1, the anode of the diode V2 is grounded, and the cathode of the diode V2 is connected to the 1-pin terminal of the common-mode inductor L1, and the 3-pin of the common-mode inductor L1 is grounded, and the 4-pin is connected to the input terminal of the power voltage-stabilizing chip U1.
8. The pin sensor calibrator according to claim 5, wherein the calibrator further comprises a buzzer and a buzzer interface circuit (7) for driving the buzzer to work, the buzzer interface circuit (7) comprises an isolating optocoupler U8 and a triode Q3, a pin 1 at the front stage of the isolating optocoupler U8 is connected to the output end of the power supply circuit (6), a pin 2 at the front stage is connected to the output end of the singlechip (1), a pin 3 at the rear stage of the isolating optocoupler U8 is connected to the base of the triode 3, a pin 4 at the rear stage of the isolating optocoupler U8 is connected to the negative electrode of the buzzer in one way, and the positive electrode of the buzzer is connected to 24V.
9. The calibration instrument for the pin shaft sensor according to any one of claims 1 to 4, characterized in that the calibration instrument further comprises a transceiver circuit (8), and the singlechip (1) is connected with the display control device through the transceiver circuit (8).
10. The pin sensor calibrator according to any one of claims 1 to 4, wherein the calibrator further comprises a key (9) and a key detection circuit for detecting a key switch state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120419819.7U CN214793611U (en) | 2021-02-23 | 2021-02-23 | Pin shaft sensor calibration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120419819.7U CN214793611U (en) | 2021-02-23 | 2021-02-23 | Pin shaft sensor calibration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214793611U true CN214793611U (en) | 2021-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120419819.7U Active CN214793611U (en) | 2021-02-23 | 2021-02-23 | Pin shaft sensor calibration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214793611U (en) |
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2021
- 2021-02-23 CN CN202120419819.7U patent/CN214793611U/en active Active
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